Battery and battery apparatus

1. A battery, comprising:

a housing;

a cell, the cell disposed in the housing;

a pole element, the pole element disposed on the housing; and

a heat sink, the heat sink disposed on the housing,

wherein the housing comprises:

a first housing member;

a second housing member, the second housing member connected with the first housing member so as to close the cell,

wherein the first housing member and the heat sink thereon are integrally formed; and/or,

the second housing member and the heat sink thereon are integrally formed,

wherein at least one of the first housing member and the second housing member is provided with the heat sink and the pole element thereon, the heat sink is provided at a circumferential outer edge of the first housing member, the heat sink is provided at a circumferential outer edge of the second housing member, and the heat sink on the first housing member is welded to the heat sink on the second housing member.

2. The battery according to claim 1 , wherein a length of the battery is a, a width of the battery is b, and a height of the battery is c, in which 2b≤a≤50b, and/or 0.5c≤b≤20c; and

400 mm≤a≤2500 mm.

3. A battery apparatus, comprising a plurality of batteries disposed along a first direction, the battery comprising:

a housing;

a cell, the cell disposed in the housing;

a pole element, the pole element disposed on the housing; and

a heat sink, the heat sink disposed on the housing,

wherein the housing comprises:

a first housing member;

a second housing member, the second housing member connected with the first housing member so as to close the cell,

wherein the first housing member and the heat sink thereon are integrally formed; and/or,

the second housing member and the heat sink thereon are integrally formed,

wherein at least one of the first housing member and the second housing member is provided with the heat sink and the pole element thereon, the heat sink is provided at a circumferential outer edge of the first housing member, the heat sink is provided at a circumferential outer edge of the second housing member, and the heat sink on the first housing member is welded to the heat sink on the second housing member.

4. The battery apparatus of claim 3 , wherein the housing comprises two first surfaces opposite in the first direction and four second surfaces disposed around the first surfaces; at least one of the second surfaces is provided with a heat sink thereon, and the heat sink extends from the second surface.

5. The battery apparatus according to claim 4 , wherein an area of the first surface is larger than an area of the second surface.

6. The battery apparatus according to claim 4 , the battery apparatus further comprising:

a frame assembly, the frame assembly formed with a clamping space, and each of the batteries is located in the clamping space.

7. The battery apparatus according to claim 6 , the frame assembly comprising:

first pretensioners, the first pretensioners being two, the two first pretensioners disposed opposite to each other, and each of the batteries clamped between the two first pretensioners; and

a second pretensioner, the second pretensioner connected with the two first pretensioners so as to clamp the battery in the clamping space.

8. The battery apparatus according to claim 7 , wherein the second pretensioners are disposed in pairs, and the two second pretensioners in pairs are respectively located at two sides of the battery so as to form the clamping space with the two first pretensioners.

9. The battery apparatus according to claim 7 , wherein the second pretensioner is a circumferentially closed structure so as to cover each of the batteries and the two first pretensioners.

10. The battery apparatus according to claim 7 , wherein the two first pretensioners and the second pretensioner are an integral structure.

11. The battery apparatus according to claim 7 , wherein the first pretensioner is an end plate, and the end plate is opposite to the first surface of the battery; and

the second pretensioner is a cable tie, and the cable tie is opposite to the second surface of each of the batteries.

12. The battery apparatus according to claim 7 , the battery apparatus further comprising:

a circuit board, the circuit board disposed on one side of the battery; and

a separator, the separator located on a side of the circuit board away from the battery, and the second pretensioner pressed on the separator.

13. The battery apparatus according to claim 3 , the battery apparatus further comprising:

a temperature regulating board, the temperature regulating board provided with an accommodating groove, and the accommodating groove accommodating the heat sink of each of the batteries.

14. The battery apparatus according to claim 13 , wherein a gap is provided between the heat sink and a wall of the accommodating groove, and the gap is filled with thermal conductive adhesive; and

the thermal conductive adhesive is also filled between the housing and the temperature regulating board.

15. The battery apparatus according to claim 13 , wherein the temperature regulating board is formed with a fluid circulation channel.

16. The battery apparatus according to claim 15 , wherein the fluid circulation channel comprises:

first fluid channels, the first fluid channels being at least two, and one accommodating groove disposed between the two adjacent first fluid channels;

wherein extending directions of the first fluid channels are parallel to an extending direction of the heat sink located in the accommodating groove.

17. The battery apparatus according to claim 16 , wherein the fluid circulation channel further comprises:

a second fluid channel, the second fluid channel communicating with the fluid supplying member and communicating with each of the first fluid channels, such that the fluid supplying member supplies fluid to each of the first fluid channels through the second fluid channel; and

a third fluid channel, the third fluid channel communicating with the fluid receiving member and communicating with each of the first fluid channels, such that the fluid in the first fluid channels fluid through the third fluid channel into the fluid receiving member.

18. The battery apparatus according to claim 17 , wherein two sides of the second fluid channel are respectively communicated with a group of the first fluid channels; and

the third fluid channel is disposed around the first fluid channels and the second fluid channel.

19. The battery apparatus according to claim 17 , wherein at least one of a bottom end of the second fluid channel and a bottom end of the third fluid channel is in a same plane as a bottom end of the first fluid channel; or,

at least one of the bottom end of the second fluid channel and the bottom end of the third fluid channel is located above the bottom end of the first fluid channel.

20. The battery apparatus according to claim 17 , wherein the temperature regulating board comprises:

a first plate body, the first plate body provided with the accommodating groove; and

a second plate body, the second plate body connected with the first plate body, such that the fluid circulation channel is formed between the second plate body and the first plate body.

21. The battery apparatus according to claim 20 , wherein the first plate body is internally formed with all of the first fluid channels, and the second plate body is internally formed with all of the second fluid channel and the third fluid channel;

or, the first plate body is internally formed with all of the first fluid channels and part of the second fluid channel and the third fluid channel, and the second plate body is internally formed with part of the second fluid channel and the third fluid channel;

or, the first plate body is internally formed with all of the first fluid channels, the second fluid channel, and the third fluid channel;

or, the first plate body is internally formed with part of the first fluid channels, the second fluid channel and the third fluid channel, and the second plate body is internally formed with part of the first fluid channels, the second fluid channel and the third fluid channel.