CN204389960U - A kind of battery management system - Google Patents
A kind of battery management system Download PDFInfo
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- CN204389960U CN204389960U CN201520115853.XU CN201520115853U CN204389960U CN 204389960 U CN204389960 U CN 204389960U CN 201520115853 U CN201520115853 U CN 201520115853U CN 204389960 U CN204389960 U CN 204389960U
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Abstract
The utility model discloses a kind of battery management system, comprise electrokinetic cell bag, advocate peace from controller, watchdog module, and the first and second CAN communication interface modules, advocate peace from controller and be connected with CAN respectively by the first and second CAN communication interface modules, the feeding-dog signal output port of master controller is connected with the feeding-dog signal input port of watchdog module, the status signal that electrokinetic cell bag exports inputs to respectively and advocates peace from controller, and advocates peace from controller and communicate to connect; From the reset signal output port of controller through the reset signal output port of the first clamp diode and watchdog module through the second clamp diode, be connected with the reset signal input port of master controller, and the reset signal input port of master controller is connected with the out-put supply positive pole of the first power module through the first pull-up resistor.The utility model improves safety and the degree of protection of battery management system by two redundancy structure design.
Description
Technical field
The utility model relates to electric vehicle engineering field, particularly relates to the battery management system of electric automobile.
Background technology
At present, the battery management system (BMS) comprising the electric automobile of pure electric automobile and hybrid vehicle adopts the Safe Design Scheme of Single Controller and watchdog module, the mode that this kind of Safe Design Scheme works is: when controller normally runs, and regularly can export feeding-dog signal to watchdog module; When controller runs abnormal, when regularly cannot export this feeding-dog signal to watchdog module, watchdog module can because not exported reset signal by feeding dog to controller, and controller is resetted, and such controller just can rerun from the entry address of master routine.As can be seen here, by the feeding-dog signal of watchdog module detection control device output, this kind of Safe Design Scheme only judges whether the operation of controller occurs exception, and cannot the particular content of controller working procedure be monitored, therefore there is security of system grade and the lower problem of degree of protection.
Utility model content
The object of embodiment of the present utility model is to provide a kind of battery management system framework had compared with high safety grade and degree of protection.
To achieve these goals, the technical solution adopted in the utility model is: a kind of battery management system, comprise electrokinetic cell bag, master controller, watchdog module, first power module and the first CAN communication interface module, described first power module is described master controller, watchdog module and the first CAN communication interface module are powered, described master controller is connected with CAN by described first CAN communication interface module, the feeding-dog signal output port of described master controller is connected with the feeding-dog signal input port of described watchdog module, the status signal that described electrokinetic cell bag exports inputs in described master controller, described battery management system also comprises from controller and the second CAN communication interface module, describedly communicates to connect from controller and described master controller, the described reset signal output port from controller is connected with the reset signal input port of described master controller through the first clamp diode of Opposite direction connection, the reset signal output port of described watchdog module is connected with the reset signal input port of described master controller through the second clamp diode of Opposite direction connection, and the reset signal input port of described master controller is connected through the out-put supply positive pole of the first pull-up resistor with described first power module, describedly to be connected with described CAN from controller by described second CAN communication interface module, the status signal that described electrokinetic cell bag exports also inputs to described from controller.
Preferably, described master controller and describedly to be communicated to connect from controller by spi bus.
Preferably, the reset signal input port of described master controller is connected through the out-put supply negative pole of the first electric capacity with described first power module.
Preferably, the heartbeat signal output port of described master controller is connected with the described heartbeat signal capture-port from controller; Describedly to be connected from the heartbeat signal output port of controller and the heartbeat signal capture-port of described master controller.
Preferably, described battery management system also comprises is separately described second source module of powering from controller and described second CAN communication interface module.
Preferably, described second source module comprises low pressure difference linear voltage regulator, and the power supply output pin of described low pressure difference linear voltage regulator is connected with the described power input port from controller as the out-put supply of described second source module; The reset signal output pin of described low pressure difference linear voltage regulator is connected with the described reset signal input port from controller, and is connected a reset resistor between the reset signal output pin of described low pressure difference linear voltage regulator with the out-put supply positive pole of described second source module.
Preferably, the enable pin of described low pressure difference linear voltage regulator is kept off power supply terminal with the igniting of ignition switch and is connected.
Preferably, described first CAN communication interface module comprises the first CAN transceiver, the CAN data-out pin of described first CAN transceiver is connected with the CAN data-in port of described master controller, the CAN data output pins of described first CAN transceiver is connected with the CAN data-out port of described master controller, and the CAN of described first CAN transceiver connects pin and is connected with described CAN through the first common mode inductance.
Preferably, described second CAN communication interface module comprises the second CAN transceiver, the CAN data-out pin of described second CAN transceiver is connected with the described CAN data-in port from controller, the CAN data output pins of described second CAN transceiver is connected with the described CAN data-out port from controller, and the CAN of described second CAN transceiver connects pin and is connected with described CAN through the second common mode inductance.
The beneficial effects of the utility model are: because battery management system of the present utility model is configured with one from controller in addition again on the basis of original master controller, and make from controller by communicating to connect with master controller the running status monitoring master controller, therefore, battery management system of the present utility model can not only carry out reset operation when watchdog module does not detect the feeding-dog signal that master controller exports to master controller, reset operation can also be carried out to master controller when occurring abnormal from controller monitoring to the particular content of main operation controller program, which substantially increases safe class and the degree of protection of battery management system, in addition, battery management system of the present utility model is by adopting master controller and the two redundancy structure designs from controller, can when arbitrary controller occurs abnormal, the status signal receiving the output of electrokinetic cell bag is continued by another controller, and and then keep continuous surveillance to electrokinetic cell bag, this further increases safe class and the degree of protection of battery management system from another aspect.
Accompanying drawing explanation
Fig. 1 shows the frame principle figure of a kind of embodiment according to battery management system of the present utility model;
The one that Fig. 2 shows watchdog module in Fig. 1 implements structure;
The one that Fig. 3 shows the first CAN communication interface module and the second CAN communication interface module in Fig. 1 implements structure;
A kind of resetting structure that Fig. 4 shows watchdog module and resets to master controller from controller;
The one that Fig. 5 shows second source module in Fig. 1 implements structure.
Drawing reference numeral:
11: master controller; 21: from controller;
13: watchdog module; 16: the first power modules;
15: the first CAN communication interface modules; 26: second source module;
25: the second CAN communication interface modules; 3: electrokinetic cell bag;
UE1: watchdog chip; SWT: time out period arranges pin;
WDI: feeding-dog signal input pin;
: reset signal output pin;
SRT: reset time set pin; GND2: grounding pin;
: hand-reset pin; UVCC: power pins;
WDS: pin is selected in timing; CB1, CB2, CA1, CA2: electric capacity;
RB1, RB2: resistance; CAN_TX1: the CAN data-out port of master controller;
UB1: the first CAN transceiver; CAN_RX1: the CAN data-in port of master controller;
TXD:CAN data output pins; CAN_TX2: from the CAN data-out port of controller;
RXD:CAN data-out pin; CAN_RX2: from the CAN data-in port of controller;
UB2: the second CAN transceiver; STB: Schema control pin;
VDD: power pins; PCANH: high level connects pin;
PCANL: low level connects pin; SPLIT: stablize common mode output pin;
VSS: grounding pin; DB1, DB2: transient voltage suppressor;
The out-put supply positive pole of the LB2: the second common mode inductance VCC1: the first power module;
CB7 ~ CB10: electric capacity; VCC2: the out-put supply positive pole of second source module;
RB8 ~ RB13: resistance; D1: the first clamp diode;
LB1: the first common mode inductance; R1: the first pull-up resistor;
D2: the second clamp diode; B+: the positive pole of accumulator;
C1: the first electric capacity; GND: bonding;
IN: the positive pole of power input pin; OUT: the positive pole of power supply output pin;
EN: enable pin;
: reset signal output pin;
B_RESET: power-up reset signal; U3: low pressure difference linear voltage regulator;
TIMEOUT: reset delay set of time pin;
SET: output supply voltage monitoring pattern arranges pin;
SET0V: output supply voltage feedback pin;
GND1: the negative pole of the negative pole/power supply output pin of power input pin;
WDG_RESET_MCU: the reset signal output port of watchdog module;
SLAVE_RESET_MCU: from the reset signal output port of controller;
RESET_MCU: the reset signal input port of master controller.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
The utility model is in order to the safe class that solves existing battery management system and exist and the lower problem of degree of protection, the battery management system of a kind of pair of redundancy structure is provided, as shown in Figure 1, this battery management system, except electrokinetic cell bag 3, master controller 11, watchdog module 13, first power module 16 and the first CAN communication interface module 15, is also configured with from controller 21 and the second CAN communication interface module 25.In battery management system of the present utility model, the status signal that this electrokinetic cell bag 3 exports not only inputs in master controller 11, and also input to from controller 21 simultaneously, this status signal such as comprises the total voltage signal of electrokinetic cell bag 3 medium power electric battery, current signal on power bus, the high-voltage interlocking signal etc. of high tension loop, monitor electrokinetic cell bag to enable controller and whether occur overvoltage fault, under-voltage fault, over current fault, high-voltage interlocking fault etc., like this, when the operation of arbitrary controller occurs abnormal, can be continued to keep the monitoring to electrokinetic cell bag 3 by another controller, achieve two Redundancy Design that electrokinetic cell bag 3 is monitored, improve safe class and the degree of protection of battery management system.Above-mentioned master controller 11 with such as communicated to connect by spi bus from controller 21, to make the particular content of the working procedure can monitoring master controller 11 from controller 21, and judge whether the operation of master controller occurs exception accordingly, but also master controller 11 can be made and realize information sharing from controller 21, like this, arbitrary controller due to occur operation exception problem and after being reset, just the status signal received time by obtaining another controller isolated operation with the information interaction of another controller, to prevent the problems such as the erroneous judgement that causes because of loss of learning.On this basis, in order to improve safe class and the degree of protection of power-supply management system of the present utility model further, the utility model is designed to master controller 11 not only can be resetted when watchdog module 13 does not monitor the feeding-dog signal of master controller 11 output, also can reset when the particular content of the working procedure monitoring master controller 11 from controller 21 occurs abnormal, be embodied in: the feeding-dog signal output port of master controller 11 is connected with the feeding-dog signal input port of watchdog module 13, feeding-dog signal is exported to watchdog module 13 to make master controller 11, in addition, as shown in Figure 4, be connected with the reset signal input port RESET_MCU of master controller 11 from the reset signal output port SLAVE_RESET_MCU of controller 21 through the first clamp diode D1 of Opposite direction connection, " Opposite direction connection " herein represents that the negative pole of the first clamp diode D1 is connected with reset signal output port SLAVE_RESET_MCU, the reset signal output port WDG_RESET_MCU of watchdog module 13 is connected with the reset signal input port RESET_MCU of master controller 11 through the second clamp diode D2 of Opposite direction connection, and " Opposite direction connection " herein represents that the negative pole of the second clamp diode D2 is connected with reset signal output port WDG_RESET_MCU, and the reset signal input port RESET_MCU of master controller 11 is connected with the out-put supply positive pole VCC of the first power module 16 through the first pull-up resistor R1, like this, if watchdog module 13 does not receive feeding-dog signal within the time cycle of setting, by the watchdog reset signal by reset signal output port WDG_RESET_MCU output low level, the current potential of reset signal input port RESET_MCU drags down by this watchdog reset signal under the effect of the second clamp diode D2, and the level height no matter reset signal output port SLAVE_RESET_MCU outputs signal, and then the reset operation realized master controller 11, if the operation monitoring master controller 11 from controller 21 occurs abnormal, by the controller reset signal by reset signal output port SLAVE_RESET_MCU output low level, the current potential of reset signal input port RESET_MCU drags down by this controller reset signal under the effect of the first clamp diode D1, and the level height no matter reset signal output port WDG_RESET_MCU outputs signal, and then the reset operation realized master controller 11, as can be seen here, watchdog module 13 with from controller 21, as long as there is one to carry out corresponding reset operation to master controller 11, just master controller 11 can be made to reset, and then the safe operation of master controller 11 can be ensured from different aspects, improve safe class and the degree of protection of power-supply management system, at this, this the first clamp diode D1 and the second clamp diode D2, except above-mentioned clamping action, also plays prevent interactional effect between reset signal output port WDG_RESET_MCU and reset signal output port SLAVE_RESET_MCU because having one-way conduction characteristic.Above-mentioned master controller 11, watchdog module 13 and the first CAN communication interface module 15 are powered by the first power module 16, and above-mentionedly also can be powered by the first power module 16 from controller 21 and the second CAN communication interface module 25, but, in order to make still can normally to work from controller 21 when power supply trouble appears in the first power module 16, to improve safe class and the degree of protection of power-supply management system of the present utility model further, preferably adopt as shown in Figure 1 be from controller 21 and the independently-powered structure of the second CAN communication interface module 25 by second source module 26, for this reason, first power module 16 needs the operating voltage of 12V or 24V voltage transitions needed for each electricity consumption module provided by accumulator, to form the out-put supply of the first power module 16, because controller, watchdog module and CAN communication interface module all need the operating voltage of 5V, therefore, first power module 16 only needs conversion to export a kind of out-put supply, and wherein, the negative pole of accumulator and the out-put supply negative pole of the first power module 16 are all connected with bonding GND, in the embodiment of configuration second source module 26, this second source module 26 needs 12V or the 24V voltage transitions that provided by accumulator for from the operating voltage needed for controller 21 and the second CAN communication interface module 25 equally, to form the out-put supply of second source module, and the out-put supply negative pole of second source module 26 is also connected with bonding GND.In order to realize master controller 11 and from the information interaction between controller 21 and other controllers of vehicle body, this master controller 11 is connected with CAN (comprising CANH and CANL) by the first CAN communication interface module 15, is then connected with CAN by the second CAN communication interface module 25 from controller 21.
In order to ensure the stability of the signal that the reset signal input port RESET_MCU of master controller 11 receives, as shown in Figure 4, the reset signal input port RESET_MCU of master controller 11 can be made to be connected with the out-put supply negative pole of the first power module 16 through the first electric capacity C1, this can improve the anti-interference of the reset signal input port RESET_MCU of master controller 11, and then master controller 11 can be avoided because of external interference to occur the problem by mistake resetted.
In order to make from controller 21 can with master controller 11 synchronous operation, to realize seamless switching when a side is broken down, the heartbeat signal output port of master controller 11 can be made to be connected with the heartbeat signal capture-port from controller 21, to send heartbeat signal by master controller 11 to from controller 21, and make to be connected from the heartbeat signal output port of controller 21 and the heartbeat signal capture-port of master controller 21, to pass through to send heartbeat signal from controller 21 to master controller 11.
Independent in employing second source module 26 is from the embodiment that controller 21 and the second CAN communication interface module 25 are powered, as shown in Figure 5, this second source module 26 such as can adopt low pressure difference linear voltage regulator U3, the power input pin IN of this low pressure difference linear voltage regulator U3, GND1 receives the input power from accumulator of second source module 26, namely the positive pole IN of power input pin is connected with the positive pole B+ of accumulator, the negative pole GND1 of power input port is connected with bonding, the power supply output pin OUT of this low pressure difference linear voltage regulator U3, GND1 provides the out-put supply VCC2 of second source module 26, GND, this out-put supply VCC2, GND is connected with the power input port from controller 21, the out-put supply positive pole VCC2 being specially second source module 26 is connected with the cathode power supply input port from controller 21, the out-put supply negative pole of second source module 26, i.e. bonding GND, be connected with the negative power supply input port from controller 21, the reset signal output pin of low pressure difference linear voltage regulator U3
be connected with the reset signal input port from controller 21, and the reset signal output pin of low pressure difference linear voltage regulator U3
and be connected a reset resistor RA1 between the out-put supply positive pole VCC2 of second source module 26.Because adopted low pressure difference linear voltage regulator U3 has reset function, therefore it can when the out-put supply monitoring second source module 26 be lower than setting value (being such as the power supply nominal voltage of 90%), by reset signal output pin
the power-up reset signal B_RESET of output low level, to make to reset from controller 21, to ensure the reliability from controller 21.
In addition, above-mentioned low pressure difference linear voltage regulator can also for having the voltage stabilizer of ena-bung function, just out-put supply is started this kind of voltage stabilizer only receives the enable signal of high level in its enable pin after, in the utility model, as shown in Figure 5, the enable pin EN of low pressure difference linear voltage regulator U3 can be made to keep off power supply terminal with the igniting of ignition switch be connected, because this igniting gear power supply terminal is the power supply terminal that firing key gets to that igniting gear (i.e. ON gear) just starts to have electricity, therefore, that is powered by second source module 26 only just starts working from controller 21 and the second CAN communication interface 25 after firing key gets to ON gear, this kind of embodiment can effectively prevent accumulator at parking period power shortage.
As shown in Figure 5, other auxiliary circuits of this second source module 26 such as comprise: the output supply voltage monitoring pattern of low pressure difference linear voltage regulator U3 arranges pin SET and is connected with bonding GND, to make low pressure difference linear voltage regulator U3 under the out-put supply VCC2 output mode that is 5V, the voltage of circuit network to out-put supply of chip internal is adopted to monitor; The output supply voltage feedback pin SET0V of low pressure difference linear voltage regulator U3 is connected with power supply output pin OUT, with the magnitude of voltage of the circuit network feedback out-put supply to chip internal, and then the object whether voltage realizing monitoring out-put supply correct; The reset delay set of time pin TIMEOUT of low pressure difference linear voltage regulator U3 is connected with bonding through electric capacity CA2, during with the out-put supply by selecting the capacitance of electric capacity CA2 to be arranged on to monitor second source module 26 lower than setting value, the reset delay time of the power-up reset signal B_RESET of output low level.
Above-mentioned watchdog module 13 can comprise watchdog chip UE1 as shown in Figure 2, and the feeding-dog signal input pin WDI of this watchdog chip UE1 is connected with the feeding-dog signal input port of watchdog module 13, to receive the feeding-dog signal that master controller 11 exports; The reset signal output pin of this watchdog chip UE1
be connected with the reset signal output port of watchdog module 13, to export watchdog reset signal to master controller 11; The hand-reset pin of this watchdog chip UE1
be connected with a dividing point of bleeder circuit, to forbid that watchdog chip UE1 carries out hand-reset, this bleeder circuit such as comprises the resistance RB1 between out-put supply positive pole VCC1 and bonding GND and resistance RB2 that are connected in series in the first power module 16; The time out period of this watchdog chip UE1 arranges pin SWT and is connected with bonding GND through electric capacity CB1; The reset time set pin SRT of this watchdog chip UE1 is connected with bonding GND through electric capacity CB2; The timing of this watchdog chip UE1 selects pin WDS to be connected with bonding GND; The power pins UVCC of this watchdog chip UE1 is connected with the out-put supply positive pole VCC1 of the first power module 16, and the grounding pin GND2 of this watchdog chip UE1 is connected with bonding GND.
When master controller 11 self is integrated with CAN controller, as shown in Figure 3, above-mentioned first CAN communication interface module 15 can comprise a CAN transceiver as the first CAN transceiver UB1, the CAN data output pins TXD of the first CAN transceiver UB1 is connected with the CAN data-out port CAN_TX1 of master controller 11, and the CAN data-out pin RXD of the first CAN transceiver UB1 is connected with the CAN data-in port CAN_RX1 of master controller 11; The CAN of the first CAN transceiver UB1 connects pin and is connected with CAN through the first common mode inductance LB1, namely the high level connection pin PCANH of CAN connection pin is connected with the CANH of CAN through a winding of the first common mode inductance LB1, and the low level connection pin PCANL that CAN connects pin is connected with the CANL of CAN through another winding of the first common mode inductance LB1.
In addition, as shown in Figure 3, this the first CAN communication interface module 15 also can comprise transient voltage suppressor (TVS) DB1, between the tie point of this transient voltage suppressor DB1 Opposite direction connection between the first common mode inductance LB1 and CAN and bonding GND, be specially and between the tie point of CANH and bonding GND, and and the tie point of CANL be respectively connected a transient voltage suppressor DB1 with between bonding GND.
As shown in Figure 3, other auxiliary circuits of this first CAN communication interface module 15 such as comprise, and the Schema control pin STB of the first CAN transceiver UB1 is connected with bonding GND through resistance RB10, is operated in normal mode to make the first CAN transceiver UB1; The power pins VDD of the first CAN transceiver UB1 is connected with the out-put supply positive pole VCC1 of the first power module 16, and is connected with bonding GND through electric capacity CB7, and the grounding pin VSS of the first CAN transceiver UB1 is connected with bonding GND; The stable common mode output pin SPLIT of the first CAN transceiver UB1 suspends, the high level of the first CAN transceiver UB1 connects pin PCANH and is connected with bonding GND with the series circuit of electric capacity CB8 through resistance RB9, and the low level of the first CAN transceiver UB1 connects pin PCANL and is connected with bonding GND with the series circuit of electric capacity CB8 through resistance RB8.
When self being integrated with CAN controller from controller 21, as shown in Figure 3, above-mentioned second CAN communication interface module 25 can comprise another above-mentioned CAN transceiver as the second CAN transceiver UB2, the CAN data output pins TXD of the second CAN transceiver UB2 is connected with the CAN data-out port CAN_TX2 from controller 21, and the CAN data-out pin RXD of the second CAN transceiver UB2 is connected with the CAN data-in port CAN_RX2 from controller 21; The CAN of the second CAN transceiver UB2 connects pin and is connected with CAN through the second common mode inductance LB2, namely the high level connection pin PCANH of CAN connection pin is connected with the CANH of CAN through a winding of the second common mode inductance LB2, and the low level connection pin PCANL that CAN connects pin is connected with the CANL of CAN through another winding of the second common mode inductance LB2.
In addition, as shown in Figure 3, this the second CAN communication interface module 25 also can comprise transient voltage suppressor (TVS) DB2, between the tie point of this transient voltage suppressor DB2 Opposite direction connection between the second common mode inductance LB2 and CAN and bonding GND, be specially and between the tie point of CANH and bonding GND, and and the tie point of CANL be respectively connected a transient voltage suppressor DB2 with between bonding GND.
As shown in Figure 3, other auxiliary circuits of this second CAN communication interface module 25 such as comprise, and the Schema control pin STB of the second CAN transceiver UB2 is connected with bonding GND through resistance RB13, is operated in normal mode to make the second CAN transceiver UB2; The power pins VDD of the second CAN transceiver UB2 is connected with the out-put supply positive pole VCC2 of second source module 16, and is connected with bonding GND through electric capacity CB9, and the grounding pin VSS of the second CAN transceiver UB2 is connected with bonding GND; The stable common mode output pin SPLIT of the second CAN transceiver UB2 suspends, the high level of the second CAN transceiver UB2 connects pin PCANH and is connected with bonding GND with the series circuit of electric capacity CB10 through resistance RB12, and the low level of the second CAN transceiver UB2 connects pin PCANL and is connected with bonding GND with the series circuit of electric capacity CB10 through resistance RB11.
Structure of the present utility model, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change done according to conception of the present utility model; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet instructions with diagram contain spiritual time, all should in protection domain of the present utility model.
Claims (9)
1. a battery management system, comprise electrokinetic cell bag, master controller, watchdog module, the first power module and the first CAN communication interface module, described first power module is described master controller, watchdog module and the first CAN communication interface module are powered, described master controller is connected with CAN by described first CAN communication interface module, the feeding-dog signal output port of described master controller is connected with the feeding-dog signal input port of described watchdog module, and the status signal that described electrokinetic cell bag exports inputs in described master controller; It is characterized in that, described battery management system also comprises from controller and the second CAN communication interface module, describedly communicates to connect from controller and described master controller; The described reset signal output port from controller is connected with the reset signal input port of described master controller through the first clamp diode of Opposite direction connection, the reset signal output port of described watchdog module is connected with the reset signal input port of described master controller through the second clamp diode of Opposite direction connection, and the reset signal input port of described master controller is connected through the out-put supply positive pole of the first pull-up resistor with described first power module; Describedly to be connected with described CAN from controller by described second CAN communication interface module; The status signal that described electrokinetic cell bag exports also inputs to described from controller.
2. battery management system according to claim 1, is characterized in that, described master controller and describedly to be communicated to connect from controller by spi bus.
3. battery management system according to claim 1, is characterized in that, the reset signal input port of described master controller is connected through the out-put supply negative pole of the first electric capacity with described first power module.
4. battery management system according to claim 1, is characterized in that, the heartbeat signal output port of described master controller is connected with the described heartbeat signal capture-port from controller; Describedly to be connected from the heartbeat signal output port of controller and the heartbeat signal capture-port of described master controller.
5. battery management system according to any one of claim 1 to 4, is characterized in that, it is separately described second source module of powering from controller and described second CAN communication interface module that described battery management system also comprises.
6. battery management system according to claim 5, it is characterized in that, described second source module comprises low pressure difference linear voltage regulator, and the power supply output pin of described low pressure difference linear voltage regulator is connected with the described power input port from controller as the out-put supply of described second source module; The reset signal output pin of described low pressure difference linear voltage regulator is connected with the described reset signal input port from controller, and is connected a reset resistor between the reset signal output pin of described low pressure difference linear voltage regulator with the out-put supply positive pole of described second source module.
7. battery management system according to claim 6, is characterized in that, the enable pin of described low pressure difference linear voltage regulator and the igniting of ignition switch keep off power supply terminal and be connected.
8. battery management system according to any one of claim 1 to 4, it is characterized in that, described first CAN communication interface module comprises the first CAN transceiver, the CAN data-out pin of described first CAN transceiver is connected with the CAN data-in port of described master controller, the CAN data output pins of described first CAN transceiver is connected with the CAN data-out port of described master controller, and the CAN of described first CAN transceiver connects pin and is connected with described CAN through the first common mode inductance.
9. battery management system according to any one of claim 1 to 4, it is characterized in that, described second CAN communication interface module comprises the second CAN transceiver, the CAN data-out pin of described second CAN transceiver is connected with the described CAN data-in port from controller, the CAN data output pins of described second CAN transceiver is connected with the described CAN data-out port from controller, and the CAN of described second CAN transceiver connects pin and is connected with described CAN through the second common mode inductance.
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| CN106208209A (en) * | 2016-08-04 | 2016-12-07 | 科力远混合动力技术有限公司 | A kind of electrokinetic cell assures reason system power supply circuit |
| CN106302855A (en) * | 2016-08-12 | 2017-01-04 | 北京长城华冠汽车科技股份有限公司 | A kind of automatic addressing method and apparatus of cell management system of electric automobile |
| CN106647715A (en) * | 2017-01-16 | 2017-05-10 | 南京奥联新能源有限公司 | Apparatus and method for implementing CAN (controller area network) channel extension of master controller based on SPI (serial peripheral interface) |
| CN106991825A (en) * | 2017-05-05 | 2017-07-28 | 深圳市哈工大交通电子技术有限公司 | The lamp system controlled based on CAN |
| CN107239356A (en) * | 2016-03-28 | 2017-10-10 | 恩智浦有限公司 | Watchdog circuit |
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| CN106647715A (en) * | 2017-01-16 | 2017-05-10 | 南京奥联新能源有限公司 | Apparatus and method for implementing CAN (controller area network) channel extension of master controller based on SPI (serial peripheral interface) |
| CN106991825A (en) * | 2017-05-05 | 2017-07-28 | 深圳市哈工大交通电子技术有限公司 | The lamp system controlled based on CAN |
| CN107719155A (en) * | 2017-09-11 | 2018-02-23 | 吉利汽车研究院（宁波）有限公司 | Battery management system and method |
| US11293953B2 (en) | 2017-12-20 | 2022-04-05 | Lg Energy Solution, Ltd. | System and method for diagnosing abnormality in main control unit |
| CN110869781A (en) * | 2017-12-20 | 2020-03-06 | 株式会社Lg化学 | System and method for diagnosing an anomaly in a master control unit |
| CN109887389A (en) * | 2019-04-12 | 2019-06-14 | 无锡商业职业技术学院 | The new energy car battery BMS bus failure setting circuit and its method of real training |
| CN109887389B (en) * | 2019-04-12 | 2024-03-15 | 无锡商业职业技术学院 | New energy automobile battery BMS bus fault setting circuit for practical training and method thereof |
| CN112864479A (en) * | 2019-11-12 | 2021-05-28 | 株洲中车时代电气股份有限公司 | Rail transit lithium battery management system and battery system |
| CN112864479B (en) * | 2019-11-12 | 2022-06-07 | 株洲中车时代电气股份有限公司 | Rail transit lithium battery management system and battery system |
| CN114497769A (en) * | 2022-01-25 | 2022-05-13 | 四川启睿克科技有限公司 | Dual-redundancy lithium battery management system and method |
| CN114497769B (en) * | 2022-01-25 | 2023-09-22 | 四川启睿克科技有限公司 | Dual-redundancy lithium battery management system and method |
| CN114475252A (en) * | 2022-01-29 | 2022-05-13 | 广东汇天航空航天科技有限公司 | Data processing system and method for vehicle battery, vehicle and storage medium |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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