JP2002056904A - Battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery excellent in mountability and productivity, of which the inner temperature of a battery container will not easily rise. SOLUTION: This battery is provided with a battery container 3 which seals at least a positive electrode 41 and a negative electrode 42 in its inside, and electrode terminals 1, 2 having terminal parts 13, 23 joined with each of the positive and negative electrodes and protruding from the battery container 3, is also provided with a radiating member 5 fixed to the terminal parts. The battery transmits the inside heat from the terminal part of the electrode terminals to the radiating member, radiation at which restrains deterioration in battery performance due to over-heating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery, and more particularly, to a battery in which a heat radiating member is fixedly arranged at a terminal.

[0002]

2. Description of the Related Art In recent years, electric vehicles such as electric vehicles and hybrid vehicles have been actively developed. There is an increasing demand for a secondary battery having excellent performance, reliability, and safety as a power supply for driving the electric vehicle.

[0003] In these electric vehicles, the driving power supply is required to have a high electromotive force and a high energy amount. As this driving power supply, a battery having a positive electrode and a negative electrode and having many battery cells connected in series or parallel to generate an electrode reaction is used in order to obtain a high electromotive force and energy amount. This battery is usually sealed in a state where a number of battery cells are isolated from each other in an integrated container. A battery having such a structure is called a monoblock battery, and many proposals have been made.

[0004] When a large current is discharged, the battery cell generates heat due to an electrode reaction between the positive electrode and the negative electrode. Due to this heat generation, the battery cells are overheated, the positive electrode and / or the negative electrode are damaged by the heat, and the performance of the battery is reduced. For this reason, the battery has required a heat radiation measure for preventing heat generation of the battery against heat generated by a large current.

[0005] A battery with heat dissipation measures is disclosed, for example, in Japanese Utility Model Laid-Open No. 61-39860.

Japanese Utility Model Laid-Open Publication No. 61-39860 discloses a battery having a through-hole through which air circulates in a partition wall separating a battery cell chamber of a battery container of a monoblock battery. In this battery, the partition wall is cooled by the air circulating through the through hole of the partition wall, and the electrode body housed in the battery cell chamber partitioned by the partition wall can be cooled over a wide area.

However, since the space of the through hole and the partition wall portion need to have a thickness of two layers separated by the through hole,
There is a drawback in that a large space is required for the partition wall, and as a result, the mounting efficiency of the battery deteriorates.

Further, Japanese Patent Application Laid-Open No. Hei 10-144266 discloses a battery of a monoblock type battery including a battery container having an outer wall and an inner wall in which metal parts are covered with a resin.

In this battery case, heat can be efficiently transmitted to the surroundings by a portion made of a metal part, but heat conduction from the electrode body to the metal part and from the outer wall of the case to the outside. Since heat conduction is performed through the resin part, it is necessary to form the resin part very thin in order to obtain sufficient heat dissipation, and there is a problem that there is a problem in forming the container.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a battery which is excellent in mountability and productivity and in which the temperature inside a battery container is hard to rise. .

[0011]

Means for Solving the Problems In order to solve the above problems, the present inventors have studied a battery capable of radiating internal heat, and as a result, have arranged a heat radiating member at the terminal portion of the electrode terminal. It was found that the above problem could be solved.

That is, the battery of the present invention comprises a battery container having at least a positive electrode and a negative electrode sealed therein, and an electrode terminal joined to each of the positive electrode and the negative electrode and having a terminal portion protruding from the battery container. , Characterized by having a heat radiating member fixedly arranged on the terminal portion.

In the battery of the present invention, the heat inside the battery is transferred from the terminal of the electrode terminal to the heat radiating member by arranging the heat radiating member fixedly at the terminal of the electrode terminal, and the heat radiating member radiates heat. Since the heat inside the battery is radiated from the heat radiation member, a decrease in battery performance due to overheating is suppressed. As a result, the battery of the present invention can have high performance and a long life.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A battery according to the present invention comprises a battery container enclosing at least a positive electrode and a negative electrode therein, and an electrode terminal joined to each of the positive electrode and the negative electrode and having a terminal portion projecting from the battery container. Battery. As the battery of the present invention, any battery having such a configuration may be used. That is, the battery may be a primary battery or a secondary battery.
Any type of battery such as a -Cd battery, a Ni-MH battery, and a lithium battery may be used. Furthermore, the shape of the battery is not particularly limited, and may be a cylindrical battery or a prismatic battery.

The battery of the present invention has a heat dissipating member fixed to the terminal. That is, heat generated from the positive electrode and the negative electrode inside the battery is transmitted to the heat radiating member via the terminal portion of the joined electrode terminal, and the heat is radiated to the outside air by the heat radiating member. Therefore, in the battery of the present invention, the heat generated from the positive electrode and the negative electrode inside the battery does not stay inside the battery container, and the positive electrode and the negative electrode are prevented from being damaged by the heat.

In the battery of the present invention, it is preferable that the heat radiating member is fixed to the terminal portion in a state of being spaced from the surface of the battery container. That is, by disposing the heat radiating member at a distance from the surface of the battery container, heat transmitted to the heat radiating member is radiated without being transmitted to the battery container. In addition, since the space is provided between the heat radiating member and the battery container, heat is radiated from the battery container surface to the outside air.

It is preferable that the heat radiating member is a member fixed to a plurality of terminal portions projecting in the same direction. That is, the fact that the heat radiating member is an integral member fixed to the plurality of terminal portions means that the heat radiating member is fixed at a plurality of locations, and the heat radiating member is firmly fixed. In addition, it indicates that the heat radiating member has a larger surface area as it is fixed at a plurality of locations, and the heat radiating member has improved heat radiation.

The battery of the present invention preferably has a plurality of battery cells having a positive electrode and a negative electrode. By having a plurality of battery cells, a battery having a plurality of terminal portions can be obtained. In addition, by connecting the terminal portions of the plurality of battery cells in series or in parallel, the performance of the battery can be improved. Here, a battery cell refers to a member having at least a positive electrode and a negative electrode and capable of forming electric power by an electrode reaction. Examples of the battery cell include an electrode body such as a lithium battery.

It is preferable that at least a part of the end face of the terminal portion is in contact with the heat radiation member. That is, by bringing the heat radiating member into contact with the end surface of the terminal portion, the contact area between the terminal portion and the heat radiating member is increased, and the heat is transferred from the terminal portion to the heat radiating member with higher efficiency. Here, the end face of the terminal portion does not indicate only the end face of the tip of the terminal portion, but includes the end face of a member that is thermally conductively connected to the electrode terminal protruding from the battery container. For example, a fixing member for fixing the electrode terminal to the battery container can be used.

In the heat radiation member, it is preferable that at least a positive electrode terminal and a negative electrode terminal electrically connected to an external circuit are electrically insulated. That is, since the positive electrode terminal portion and the negative electrode terminal portion are insulated, power can be supplied to an external circuit to which the battery is connected without causing a short circuit in the heat radiating member. Here, the phrase “the positive electrode terminal portion and the negative electrode terminal portion are at least electrically insulated” means that a pair of terminal portions electrically connected to an external circuit when the battery of the present invention has a plurality of terminal portions. This indicates that not only are the terminals electrically insulated from each other, but also the other terminals are electrically insulated from terminals other than the desired mating terminal.

For example, in a battery having a plurality of battery cells, the respective battery cells are electrically connected in series or in parallel. At this time, the connection between the battery cells is usually made by connecting the terminal portions provided on each of the battery cells. For this reason, in the battery of the present invention, when the heat radiation member is fixedly arranged on the plurality of terminal portions, electrical insulation is maintained during the period other than the connection of the terminal portions for connecting the battery cells. I have.

Preferably, the heat dissipating member electrically connects desired terminals. Since the heat dissipating member connects the terminal portions to each other, no extra wiring member is required for the electrical connection of the battery cells, and the cost and the required space required for assembling and assembling the battery of the present invention are reduced. Can be reduced.

Preferably, the heat radiating member is a heat radiating plate. By using the heat radiating member as the heat radiating plate, the surface area of the heat radiating member can be increased, and the heat transmitted from the terminal portion can be efficiently radiated.

It is preferable that the heat radiating plate has a convex portion protruding from the surface. In other words, by having the convex portion on the surface of the heat radiating plate, the surface area of the heat radiating plate can be increased, and the heat transmitted from the terminal portion can be efficiently radiated.

It is preferable that the convex portion protrudes in the same direction as the direction in which the terminal portion protrudes. The same direction as the direction in which the terminal portion protrudes is a direction in which the tip of the convex portion moves away from the battery container. That is, the protrusion of the convex portion facilitates the diffusion of the heat radiated from the radiator plate into the outside air.

It is preferable that a plurality of projections are provided. By having a plurality of convex portions, the surface area of the heat radiating plate can be increased, and the heat transmitted from the terminal portion can be efficiently radiated.

It is preferable that the convex portion is formed of a ridge. That is, since the convex portion is formed by the ridge, the radiating fin is formed on the surface of the heat radiating member, and the heat radiating property of the heat radiating member is improved.

It is preferable that the convex portion is formed of a projection. That is, since the convex portion is formed by the projection, the surface area of the heat radiating member is increased, and the heat radiating property of the heat radiating member is improved.

It is preferable that the heat radiating plate has a wavy shape.
Since the heat sink has a wave shape, the surface area of the heat sink increases,
Heat dissipation is improved.

The heat radiating member is preferably made of resin. Since the resin has high moldability, it can be easily formed into a predetermined shape. In addition, the heat dissipation of the battery can be enhanced without a large increase in weight due to the light weight of the resin itself. Furthermore, since it has insulating property, it can prevent that the terminal part arrange | positioned and fixed short-circuits. As this resin, any resin may be used. For example, general-purpose resins such as polyethylene, polyvinyl chloride, nylon, and ABS can be used. Further, fillers such as glass fiber, inorganic filler, carbon fiber and the like may be added as a reinforcing agent to these resins.

Preferably, the heat radiating member has a metal member. Since the metal member has better thermal conductivity than resin, heat transmitted to the heat radiating member is radiated to the outside from the metal member. Therefore, a heat radiating member having a metal member is more excellent in heat radiation than a heat radiating member formed only of a resin member. Examples of the material of the metal member include metals such as aluminum, copper alloy, and iron.

The metal member is disposed on the heat radiating member in a state where electrical insulation between the positive terminal portion and the negative terminal portion is maintained. The material of the metal member is not particularly limited.

Further, the metal member may function as a wiring member. That is, when the metal member is used in a portion that comes into contact with the terminal portion of the heat radiating member, the electrical conductivity of the metal member is used to electrically connect to an external circuit or electrically connect the adjacent terminal portion. By conducting, the electrode bodies can be connected in series or in parallel.

Further, since the metal member functions as a wiring member, the number of components can be reduced, and the cost of the battery can be reduced.

In the battery of the present invention, the heat dissipating member is fixedly arranged on the terminal portion of the electrode terminal, whereby the heat inside the battery is transmitted from the terminal portion of the electrode terminal to the heat dissipating member, and the heat dissipating member dissipates heat. For this reason, overheating inside the battery is suppressed, and a decrease in battery performance due to overheating is suppressed. For this reason, the battery of the present invention has an effect of having high performance and a long life.

[0036]

The present invention will be described below with reference to examples.

As an example of the present invention, a lithium battery having a heat sink was manufactured.

(Example 1) In Example 1, a battery case 3 having a rectangular shape, an electrode body 4 sealed inside the battery case 3, and one end joined to the electrode body 4 and the other end being an electric case 3
A pair of electrode terminals 1 and 2 having terminal portions 13 and 23 protruding from the upper surface of the battery, and a radiator plate 5 fixed to the pair of terminal portions 13 and 23 at a distance from the surface of the battery container 3. Battery. This battery is shown in FIG. 1 in a sectional perspective view showing the inside of the container.

The battery case 3 is a resin case which divides a battery cell chamber in which the electrode body 4 is sealed, and in which the battery cell chamber and the outer periphery are formed in a rectangular parallelepiped shape. Further, the battery container 3 has a through hole through which the electrode terminals 1 and 2 penetrate at positions corresponding to the electrode terminals 1 and 2.

The electrode body 4 includes a positive electrode foil 41 and a negative electrode foil 42.
Is an electrode body formed in a flat wound shape with the separator 43 interposed therebetween. The positive foil 41 is a strip-shaped aluminum foil 41.
3 is a foil having a positive electrode active material layer 412 formed on both surfaces.
The negative electrode foil 42 is a foil in which a negative electrode active material layer 422 is formed on both sides of a strip-shaped copper foil 423. The separator 43 is formed of the electrode active material layers 412 and 42 of the positive foil 41 and the negative foil 42.
2 is a porous sheet made of polyethylene or polypropylene formed wider than the portion where 2 is formed. Also,
The positive electrode foil 41 and the negative electrode foil 42 have, on one end side in the width direction, a peripheral portion where the active material layer is not formed. The electrode body 4 has protruding ends 411 and 421 formed from edges protruding in directions facing each other in the axial direction of the winding shaft.

The pair of electrode terminals 1 and 2 are made of a metal conductor, and have shafts 11 and 21 joined to protruding ends 411 and 421 at one end and an external circuit electrically connected to the other end. It is a member having terminal parts 13 and 23 to be connected and container fixing parts 12 and 22 for fixing to the wall surface part on the upper surface of the battery container 3. The container fixing portions 12 and 22 are composed of flange portions 121 and 221 radially outwardly extending from the electrode terminals 1 and 2, and nut portions 122 and 222, and the electrode terminals 1 and 2 are formed on the wall surface of the upper surface of the battery container 3. The wall portion of the battery container 3 is pierced through the flange portions 121 and 221 and the nut portions 122 and 2.
The electrode terminals 1 and 2 are fixed to the battery container 3 by being sandwiched between the battery terminals 3 and 22. The electrode terminals 1 and 2 are connected to the container fixing portions 12 and 2
In order to fix the nuts 122 and 222,
Screw portions 131 and 231 are formed from the flange portions 121 and 221 to the other end.

The electrode terminals 1 and 2 have the shaft portions 11 and 21 joined to the outer peripheral surfaces of the protruding ends 411 and 421 of the electrode body 4.
The electrode terminals 1 and 2 are joined to the protruding ends 411 and 421 formed on both ends of the winding shaft of the electrode body 4 with the other ends protruding in the same direction. FIG. 2 shows the electrode body 4 to which the electrode terminals 1 and 2 are joined.

The electrode terminals 1 and 2 are fixed to the battery container 3 by flanges 121 and 221 and nuts 122 and 222 with a gasket 6 made of an insulator interposed therebetween.

The radiator plate 5 is provided with the terminal portions 1 of the electrode terminals 1 and 2.
Nut portions 122 and 22 for fixing the electrode terminals 1 and 2 to the battery case 3 are formed of plate-like members having through holes through which the terminal portions 13 and 23 can penetrate at positions corresponding to the terminal portions 3 and 23.
2 was fixed to the terminal portions 13 and 23 by the nuts 7 while being in contact with the end face of the second. The nuts 7, 7 are
Screw parts 131, 231 as well as nut parts 122, 222
And screwed. The radiator plate 5 was formed of polyethylene.

In the battery of this embodiment, when the electrode body generates heat,
The heat of the electrode body is transmitted to the shaft of the electrode terminal joined to the positive electrode foil and the negative electrode foil constituting the electrode body. That is, the positive electrode foil, the negative electrode foil, and the electrode terminal are made of a metal having good electric conductivity and also have excellent heat conductivity. The heat transmitted to the shaft of the electrode terminal diffuses to the electrode terminal and is transmitted to the heat sink joined to the terminal. When heat is transmitted to the heat sink, the heat is radiated from the heat sink to the outside air. For this reason,
The battery of this example has high heat dissipation. Further, in the battery of the present embodiment, since the radiator plate is formed of resin,
The heat sink has an insulating property. Therefore, no short circuit occurs due to the heat sink.

(Embodiment 2) In Embodiment 2, six terminals of the battery of Embodiment 1 have terminal portions 13 and 23 projecting in the same direction, and positive terminal portions 13 and negative terminal portions 23 are alternately arranged. The battery has a structure in which the side wall surfaces of the adjacent batteries are in close contact with each other and are in a closed state. Here, the fixing of the battery of Example 2 is performed by using a pair of pressing members for pressing the outermost side wall portion of the battery and a fastening member for fastening the pair of pressing members. This was done by pressing the battery at At this time, the terminal portions 13 and 23 of each battery
Is a terminal portion of an adjacent battery, and is connected to a predetermined counterpart terminal portion, whereby each battery is electrically connected in series. The connection of each battery was performed by screwing the copper alloy plate-shaped wiring member into the terminal portions 13 and 23 while screwing it. The battery of Example 2 is shown in FIG. Further, in the battery of Example 2, one heat sink 5 is fixed to the terminal of each battery.

In the battery of the second embodiment, as in the battery of the first embodiment, the heat inside the battery case is transmitted to the heat radiating plate via the electrode terminals and is radiated at the heat radiating plate. For this reason, also in the battery of Example 2, a decrease in battery performance due to overheating of the electrode body is suppressed.

Further, the battery of Example 2 can be exhibited without impairing the performance as a battery, since overheating of each battery is suppressed. That is, in the conventional monoblock type battery, the electrode body arranged on the inner side is:
It was difficult to dissipate heat from the container, and the performance was likely to deteriorate due to overheating. On the other hand, in the battery of Example 2, since the electrode body disposed on the inner side is also sufficiently cooled, a decrease in battery performance is suppressed, and the performance as a battery can be exhibited.

(Embodiment 3) Embodiment 3 is a battery having a monoblock structure in which a plurality of electrode bodies are sealed, and having a radiator plate 5 at a terminal portion. The battery of Example 3 is shown in FIG.

The battery of Example 3 is the same as that of Example 2 except that the battery container 31 of the battery of Example 2 is integrally formed. That is, the members used in Example 2 were used for the electrode body 4, the electrode terminals 1, 2 and the heat sink 5. The battery container 31 is a rectangular battery container having a battery cell chamber in which the electrode body 4 is sealed.

Further, in the battery of the third embodiment, each electrode body is connected in series similarly to the second embodiment. For this reason, the arrangement of the positive electrode and the negative electrode of the terminal portions 13 and 23 is arranged so as to be alternately arranged as in the second embodiment. Further, the terminal portions 13 and 2
The connection between the three was performed in the same manner as in the second embodiment.

Also in the battery of Example 3, since the heat is radiated by the heat radiating plate as in the battery of Example 2, a decrease in the performance of the electrode body is suppressed, and the performance as a battery can be exhibited.

(Embodiment 4) In Embodiment 4, the terminal portion 1 is provided on the surface.
This battery is the same as the battery of Example 2 except that a heat sink 52 having a plurality of projections 51 projecting in the direction perpendicular to the surface is the same as the direction in which the projections 3 and 23 project. The battery of Example 4 is shown in FIG.

The battery of the fourth embodiment has the projections 51 on the surface of the heat radiating plate 5 so that the heat radiating property of the heat radiating plate 5 is improved.
As a result, the heat of the electrode body can be radiated with high efficiency to the outside via the radiator plate.

(Embodiment 5) In Embodiment 5, a pair of terminal portions 1
A battery similar to that of Example 2 except that a heat radiating plate 53 in which a portion between the contact portions 3 and 23 is corrugated is used. The corrugated plate of the heat radiating plate is formed such that the peak of the wave does not contact the battery case 3. The battery of Example 5 is shown in FIG.

Also in the battery of Example 5, the surface area of the heat radiating plate is increased by forming the heat radiating plate into a corrugated plate, and heat radiation from the heat radiating plate to the outside is performed with high efficiency. For this reason, the electrode body inside the battery is cooled, and a decrease in the performance of the battery is suppressed.

(Embodiment 6) In Embodiment 6, the terminal portions 13 and 2
A battery similar to that of Example 2 was used except that a heat radiating plate 54 in which a contact portion with No. 3 was formed of resin and other portions were formed of a metal plate was used. FIG. 7 shows the battery of Example 6.

Heatsink 54 used in battery of Example 6
Specifically, the peripheral portion 541 which is a portion that comes into contact with the terminal portions 13 and 23 is formed of resin, and has a structure in which a metal plate is disposed in a portion 542 between the resin portions. The resin was polyethylene as in Example 1, and the metal plate was a copper alloy. The heat radiating plate 54 is provided with the insulating properties of the terminal portions 13 and 23 by the resin portion, and the metal plate exhibits a high heat radiating property.

In the battery of the sixth embodiment, the heat of the electrode body is radiated from the electrode plate as in the other embodiments. Further, the electrode plate of the battery of the present example has a high heat radiation property because of having the metal plate. That is, since the metal has higher thermal conductivity than the resin, the heat transmitted from the terminal portion to the resin portion is transmitted to the metal plate having higher thermal conductivity. Then, heat is radiated from the metal plate to the outside air.

(Embodiment 7) In Embodiment 7, the terminal portions 13 and 2
Resin heat radiating plate 55 whose contact portion with metal 3 is formed of metal
A battery similar to that of Example 2 was used except that Example 7
The battery shown in FIG.

The radiator plate 55 used in the battery of the seventh embodiment
The portion that contacts the terminal portions 13 and 23 is formed of a metal plate 552, and the other portion 551 is formed of resin. Each of the metal plates 552 is electrically insulated by the resin portion 551. The metal plate 5
The same material as in Example 6 was used for 52 and the resin portion 551.

In the battery of Example 7, the heat of the electrode body is transmitted to the metal plate of the contact portion immediately from the terminal portion. For this reason, the electrode body does not overheat. The heat transferred to the metal plate is
While being transmitted to the resin portion, the heat is radiated from the resin portion and the metal plate itself to the outside air.

(Eighth Embodiment) An eighth embodiment is a battery similar to the second embodiment except that a heat radiating plate 56 integrally formed with a connecting member 562 for connecting a terminal portion is used. The battery of Example 8 is shown in FIG.

The heat radiating plate 56 of the battery according to the eighth embodiment has a terminal corresponding to the terminal portion 13 or 23 of the electrode terminals 1 and 2 joined to the electrode body 4 encapsulated therein when connected in series. A connection member 562 made of a metal plate connecting the parts 13 and 23 is formed, and the other part 561 is formed of resin. This connecting member 562 is formed of a resin portion 56.
1, each is in an electrically insulating state. The connection member 562 and the resin portion 561 were made of the same material as in the sixth embodiment.

In the battery of Example 8, similarly to Examples 1 to 7, since the heat radiating plate is disposed at the terminal portion, overheating inside the battery is suppressed. Furthermore, since the connecting member for connecting the electrode bodies in series is formed integrally with the heat sink, the connecting member is not required for connecting the terminal portions, the number of parts required for the battery is reduced, and the cost is reduced. be able to.

[0066]

According to the battery of the present invention, the heat inside the battery is transferred from the terminal portion of the electrode terminal to the heat radiating member by arranging the heat radiating member at the terminal portion of the electrode terminal. Heat is dissipated. For this reason, overheating inside the battery is suppressed, and a decrease in battery performance due to overheating is suppressed.
For this reason, the battery of the present invention has an effect of having high performance and a long life.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a battery of Example 1.

FIG. 2 is a diagram showing a configuration of an electrode body and an electrode terminal of the battery of Example 1.

FIG. 3 is a perspective view of a battery according to a second embodiment.

FIG. 4 is a perspective view of a battery according to a third embodiment.

FIG. 5 is a perspective view of a battery according to a fourth embodiment.

FIG. 6 is a perspective view of a battery according to a fifth embodiment.

FIG. 7 is a perspective view of a battery according to a sixth embodiment.

FIG. 8 is a perspective view of a battery according to a seventh embodiment.

FIG. 9 is a perspective view of a battery according to an eighth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Positive electrode terminal 2 ... Negative electrode terminal 3 ... Battery container 4 ... Electrode body 5 ... Heat sink 6 ... Gasket 7 ... Nut

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoru Satoru 1-1-1 Showa-cho, Kariya-shi, Aichi F-term in Denso Co., Ltd. 5H022 AA05 CC02 CC08 5H031 AA09 KK01

Claims (11)

[Claims] 1. A battery comprising: a battery container enclosing at least a positive electrode and a negative electrode therein; and an electrode terminal joined to each of the positive electrode and the negative electrode and having a terminal portion protruding from the battery container. A battery comprising a heat dissipating member fixedly arranged on a terminal portion. 2. The battery according to claim 1, wherein the heat radiating member is fixedly arranged on the terminal portion at a distance from a surface of the battery container. 3. The battery according to claim 1, wherein the heat radiating member is a member fixedly disposed on the plurality of terminal portions protruding in the same direction. 4. The battery according to claim 1, wherein at least a part of an end face of the terminal portion contacts the heat radiating member. 5. The battery according to claim 1, wherein the heat dissipation member has at least an electrical insulation between a positive terminal portion and a negative terminal portion that are electrically connected to an external circuit. 6. The battery according to claim 1, comprising a plurality of said terminal portions. 7. The heat radiating member is a heat radiating plate.
The battery as described. 8. The battery according to claim 7, wherein the heat sink has a projection protruding from a surface. 9. The battery according to claim 7, wherein the heat sink has a wavy shape. 10. The battery according to claim 1, wherein the heat radiation member is made of a resin. 11. The battery according to claim 1, wherein the heat radiating member includes a metal member.