CN220021250U - Battery box and electricity utilization device - Google Patents

Abstract

The utility model discloses a battery box and an electric device, wherein the battery box comprises: a first case; a battery module disposed in the first case, the battery module including: the cooling device comprises a plurality of single-layer electric cores and a partition board, wherein the single-layer electric cores are stacked in a third direction through the partition board, and a reserved gap is formed in each single-layer electric core to form a cooling flow channel. The multiple single-layer battery cells are reliably stacked in the third direction through the partition plates, and the reserved gaps are formed in the single-layer battery cells to form cooling flow passages, so that the whole battery module is immersed in the first box body filled with cooling liquid, and the cooling liquid continuously passes through the cooling flow passages in the single-layer battery cells, so that heat in the whole battery module is continuously taken away, and the heat dissipation efficiency can be effectively improved.

Description

Battery box and electricity utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery box and an electric device.

Background

With the gradual perfection of the battery thermal management system, the traditional air cooling has the advantages of simple structure and low cost, but has low heat dissipation efficiency, is easily affected by environment, and can not meet the development requirement of the battery thermal management system. The liquid cooling is in a high-speed development stage at present due to high heat dissipation efficiency and good temperature uniformity, and how to optimally design a battery liquid cooling and heating management system so as to further enhance the heat dissipation effect of a battery box becomes one of key technical problems to be solved in the current energy storage development.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery box, a plurality of single-layer cells are stacked through the partition plates, the inside of each single-layer cell is provided with the reserved gap, and after the battery module is immersed in the box body filled with the cooling liquid, the cooling liquid passes through the reserved gap, so that the heat dissipation efficiency is improved.

The utility model also provides an electric device.

According to an embodiment of the first aspect of the present utility model, a battery box includes: a first case; a battery module disposed in the first case, the battery module including: the cooling device comprises a plurality of single-layer electric cores and a partition board, wherein the single-layer electric cores are stacked in a third direction through the partition board, and a reserved gap is formed in each single-layer electric core to form a cooling flow channel.

According to the battery box provided by the embodiment of the utility model, the single-layer battery cells are reliably stacked in the third direction through the partition plates, and the reserved gaps are formed in the single-layer battery cells to form the cooling flow channels, so that the cooling liquid continuously passes through the cooling flow channels in the single-layer battery cells after the whole battery module is immersed in the first box body filled with the cooling liquid, heat in the whole battery module is continuously taken away, and the heat dissipation efficiency can be effectively improved.

According to some embodiments of the utility model, the single-layer cell comprises: the single-layer battery cells are arranged in a first direction and/or a second direction to form single-layer battery cells, and a reserved gap is formed between every two adjacent single-layer battery cells in each single-layer battery cell, wherein the first direction, the second direction and the third direction are mutually perpendicular.

According to some embodiments of the utility model, the single-layer cell further comprises: the single-cell battery cell comprises a single-cell battery cell, a connecting sheet, a first single-layer battery cell and a second single-layer battery cell, wherein positive electrode columns and negative electrode columns which are distributed at intervals are arranged on one side of the single-cell battery cell in the third direction, the positive electrode columns of the adjacent single-cell battery cells and the negative electrode columns of the adjacent single-cell battery cells are adjacently arranged, the connecting sheet is connected to the positive electrode columns of the adjacent single-cell battery cells and the negative electrode columns of the adjacent single-cell battery cells, and the third direction is perpendicular to the first direction and the second direction.

According to some embodiments of the utility model, the single-layer cell further comprises: the sampling line is electrically connected with the single battery cell and is arranged between the positive electrode column and the negative electrode column, and the sampling line is arranged at intervals with the positive electrode column, the negative electrode column and the connecting sheet.

According to some embodiments of the utility model, the separator is provided with a plurality of channels which are mutually communicated, one channel is in mounting fit with the connecting sheet, one channel is in mounting fit with the sampling line, and one channel is a connecting channel of the sampling line with the positive pole post and the negative pole post.

According to some embodiments of the utility model, the positive and negative electrode posts connected on the connection piece are distributed along the first direction, and the separator includes: the first partition plate is provided with a first channel, the first channel is matched with the connecting piece in a mounting mode, and the first channel is arranged in a penetrating mode along the first direction.

According to some embodiments of the utility model, the positive and negative electrode posts connected on the connection piece are distributed along the second direction, and the separator includes: the second partition plate is provided with a fourth channel, the fourth channel is matched with the connecting piece in an installation mode, and the fourth channel is arranged in a penetrating mode along the second direction.

According to some embodiments of the utility model, the separator is provided with a first plug-in part, the single-layer battery cell is provided with a second plug-in part, and the separator and the single-layer battery cell are installed and fixed in a plug-in fit manner through the first plug-in part and the second plug-in part.

According to some embodiments of the utility model, one of the separator and the single-layer battery cell is provided with at least one boss, and the other one of the separator and the single-layer battery cell is provided with at least one groove, and the bosses and the grooves are connected in a one-to-one correspondence.

According to some embodiments of the utility model, the single-layer cells include a positive electrode connection terminal and a negative electrode connection terminal, the positive electrode connection terminal and the negative electrode connection terminal are disposed opposite to each other along a first direction or a second direction, and in two adjacent single-layer cells, the positive electrode connection terminal of one single-layer cell is disposed close to the negative electrode connection terminal of the other single-layer cell.

According to some embodiments of the utility model, the battery box further comprises: the positive electrode connecting ends of one single-layer battery cell and the negative electrode connecting ends of the other single-layer battery cell pass through the first connecting rows; and/or, the battery box further comprises: the two second connection rows are arranged on the first box body, a plurality of single-layer battery cells are provided with a total positive electrode and a total negative electrode on the outer side, the total positive electrode is formed by connecting a first connection sheet with the positive electrode connection end of one single-layer battery cell, the total negative electrode is formed by connecting a second connection sheet with the negative electrode connection end of one single-layer battery cell, and the total positive electrode and the total negative electrode are respectively connected to the communication interfaces through two second connection rows.

According to some embodiments of the utility model, the battery box further comprises: the cooling module is arranged in the second box body and communicated with the first box body, and cooling liquid circularly flows between the cooling module and the first box body.

According to some embodiments of the utility model, the cooling module comprises: the heat exchange device comprises a heat exchange device and a circulating device connected with the heat exchange device, wherein the first box body comprises a water inlet and a water outlet, the water inlet of the first box body is communicated with the circulating device, and the water outlet of the first box body is communicated with the heat exchange device.

According to some embodiments of the utility model, the heat exchange device comprises: the water inlet pipe is communicated between one end of the radiating pipe and the water outlet of the first box body, and the other end of the radiating pipe is communicated with the circulating device.

According to some embodiments of the utility model, the heat exchange device further comprises: the radiating fins are arranged on the radiating pipes, and the second box body is provided with heat exchange windows which face the radiating pipes and are arranged on the radiating fins.

According to some embodiments of the utility model, the circulation device comprises: the water pump, water pump inlet tube and water pump outlet pipe, the water pump inlet tube intercommunication in the water pump with between the heat exchange device, the water pump outlet pipe intercommunication in between the water pump with the water inlet of first box.

According to some embodiments of the utility model, the first case includes a case body including a bottom plate and a side plate disposed at a peripheral portion of the bottom plate, and a cover plate covering the case body and disposed opposite to the bottom plate, the battery module is disposed on the bottom plate, the water inlet of the first case is disposed on the bottom plate of the first case, and the water outlet of the first case is disposed on the cover plate of the first case.

According to some embodiments of the utility model, the second case comprises: the heat exchange device is arranged in the upper box body, and the circulating device is arranged in the lower box body.

An electrical device according to an embodiment of the second aspect of the present utility model includes: the battery box.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery box according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a first tank according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a battery module according to an embodiment of the present utility model;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

fig. 5 is a schematic structural view of a single-layer cell according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a first view angle of a single cell according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a second view angle of a single cell according to an embodiment of the present utility model;

fig. 8 is a schematic view of a first view angle of a first separator according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of a second view angle of a first separator according to an embodiment of the present utility model;

fig. 10 is a schematic view of a structure of a first view angle of a second separator according to an embodiment of the present utility model;

fig. 11 is a schematic structural view of a second viewing angle of a second separator according to an embodiment of the present utility model;

fig. 12 is a schematic view of a heat exchange apparatus according to an embodiment of the present utility model;

fig. 13 is a schematic view showing an internal structure of a heat exchange device according to an embodiment of the present utility model;

FIG. 14 is a schematic view of a circulation device according to an embodiment of the present utility model;

fig. 15 is a schematic diagram of cooling of a battery box according to an embodiment of the present utility model.

Reference numerals:

100. a battery box;

1. a first case;

2. a second case; 21. an upper case; 211. a first chamber; 212. a second chamber; 22. a lower box body; 221. a mounting cavity;

3. a cooling module; 31. a heat exchange device; 311. a water inlet pipe; 312. a heat radiating pipe; 313. a heat radiation fin; 314. a heat exchange window; 32. a circulation device; 321. a water pump; 322. a water inlet pipe of the water pump; 323. a water outlet pipe of the water pump;

4. a battery module; 41. a single layer cell; 42. a single cell; 421. a positive electrode post; 422. a negative electrode column; 423. a groove; 43. a connecting sheet; 44. reserving a gap; 45. a sampling line; 46. a first separator; 461. a first channel; 462. a second channel; 463. a third channel; 464. a boss; 47. a second separator; 471. a fourth channel; 472. a fifth channel; 473. a sixth channel; 48. a positive electrode connection end; 49. a negative electrode connection end; 50. a first connection row; 51. a second connection row; 52. a communication interface; 53. a total positive electrode; 54. a total negative electrode; 55. a partition board.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A battery case 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 15.

As shown in fig. 1 to 4, the battery box 100 includes: a battery module 4 and a first casing 1.

The battery module 4 is disposed in the first casing 1, and the battery module 4 includes: the plurality of single-layer battery cells 41 and the partition plate 55 are stacked in the third direction through the partition plate 55, and the reserved gaps 44 are arranged in the single-layer battery cells 41 to form cooling flow channels. In this way, the plurality of single-layer cells 41 are stacked in the third direction to form the battery module 4, wherein the adjacent two single-layer cells 41 are fixed by the separator 55, so as to ensure the stacking reliability of the plurality of single-layer cells 41 in the third direction.

Moreover, a reserved gap 44 is arranged in the single-layer battery cell 41, that is, a certain installation gap is reserved as a cooling flow channel, so that after the whole battery module 4 is immersed by the cooling liquid, the cooling liquid can conveniently pass through the cooling flow channel in the single-layer battery cell 41, heat in the single-layer battery cell 41 is taken away, and the heat dissipation efficiency of the whole battery module 4 can be improved.

Therefore, the plurality of single-layer battery cells 41 are reliably stacked in the third direction through the partition plates 55, the reserved gaps 44 are formed in the single-layer battery cells 41 to form cooling flow channels, after the whole battery module 4 is immersed in the first box body 1 filled with cooling liquid, the cooling liquid can circularly flow between the first box body 1 and the cooling module 3 through the operation of the cooling module 3, and thus the cooling liquid passes through the cooling flow channels in the single-layer battery cells 41, heat in the whole battery module 4 can be continuously taken away, and the heat dissipation efficiency can be effectively improved.

In some embodiments, the single layer cell 41 comprises: the plurality of single battery cells 42 and the connecting sheet 43 are arranged in the first direction and/or the second direction to form a single-layer battery cell 41, and a reserved gap 44 is arranged between two adjacent single battery cells 42 in each single-layer battery cell 41, wherein the first direction, the second direction and the third direction are mutually perpendicular.

As shown in fig. 5, in the embodiment of the present utility model, the first direction may be a first direction, the second direction may be a second direction, and the third direction may be a height direction. The plurality of unit cells 42 are arranged in the first direction and the second direction to constitute a single-layer cell 41 of 6X 4. Wherein, a reserved gap 44 is provided between two adjacent single cells 42 stacked in the first direction, or a reserved gap 44 is provided between two adjacent single cells 42 stacked in the second direction, or a reserved gap 44 is provided between two adjacent single cells 42 stacked in the first direction and the second direction, so that cooling liquid can pass through the reserved gap 44 to take away heat generated inside the single cells 42, and heat dissipation performance of the battery box 100 is improved.

In the embodiment of the present utility model, the reserved gaps 44 are disposed between every two adjacent single cells 42 arranged in the second direction, so that the cooling liquid can pass through the reserved gaps 44, and since the size of the single cells 41 in the first direction is larger than that of the single cells 41 in the second direction, compared with the case that the reserved gaps 44 are disposed between every two adjacent single cells 42 stacked in the first direction, the area through which the cooling liquid flows in the first direction is larger than that through which the cooling liquid flows in the first direction, so that the heat dissipation efficiency can be better improved.

Specifically, the single cell 42 is an oversized cell, the outer shell of the single cell 42 can meet the requirements of fire prevention, insulation and pressure bearing, and the outer shell of the single cell 42 can directly serve as a shell without an additional cell shell structure.

Furthermore, the single-layer cell 41 further includes: the connection piece 43, the positive pole 421 and the negative pole 422 of interval distribution are arranged on one side of the single cell 42 in the third direction, in a single-layer cell 41, the positive pole 421 of one single cell 42 and the negative pole 422 of the other single cell 42 in two adjacent single cells 42 are adjacently arranged, the connection piece 43 is connected on the positive pole 421 of one single cell 42 and the negative pole 422 of the other single cell 42, and the third direction is perpendicular to the first direction and the second direction.

That is, the positive electrode post 421 and the negative electrode post 422 of the unit cells 42 are disposed at one side of the third direction, so that the positive electrode post 421 of one unit cell 42 and the negative electrode post 422 of the other unit cell 42 of the adjacent two unit cells 42 can be disposed adjacently to facilitate the electrical connection between the adjacent two unit cells 42, and thus, when the adjacent two unit cells 42 are arranged in the first direction and/or the second direction, the connection piece 43 is conveniently connected to the positive electrode post 421 of one unit cell 42 and the negative electrode post 422 of the other unit cell 42 of the two adjacent unit cells 42.

As shown in fig. 5 and 6, the unit cells 42 are generally square, and the upper surfaces of the unit cells 42 in the third direction are provided with positive and negative poles 421 and 422 distributed at intervals, and the positive and negative poles 421 and 422 of one adjacent unit cell 42 are opposite to the positive and negative poles 421 and 422 of the other unit cell 42, so that the connection piece 43 is electrically connected to the positive and negative poles 421 and 422 of the two adjacent unit cells 42.

In some embodiments, the single-layer cell 41 further comprises: the sampling line 45, the sampling line 45 is electrically connected with the single cell 42 and is arranged between the positive electrode post 421 and the negative electrode post 422, and the sampling line 45 is arranged at intervals with the positive electrode post 421, the negative electrode post 422 and the connecting sheet 43. The sampling line 45 mainly samples the temperature and the voltage of the single battery cell 42, so that the safety condition of the battery module can be monitored in real time. Thus, the sampling line 45 is disposed between the positive electrode post 421 and the negative electrode post 422 and spaced from the connecting piece 43, and the sampling line 45 can reduce interference with the connecting piece 43.

Referring to fig. 4, the positive electrode posts 421 and the negative electrode posts 422 on the single-layer battery cells 41 are distributed at intervals along the second direction of the single-layer battery cells 41, and the sampling lines 45 are arranged between the positive electrode posts 421 and the negative electrode posts 422 along the first direction of the single-layer battery cells 41, so that when the connecting pieces 43 are connected to the positive electrode posts 421 and the negative electrode posts 422 of the adjacent two single-layer battery cells 42, interference with the sampling lines 45 is avoided, and normal sampling of the sampling lines 45 is ensured.

In some embodiments, the separator 55 is provided with a plurality of channels that are mutually communicated, one channel is in fit with the connecting piece 43, one channel is in fit with the sampling line 45, and one channel is a connecting channel of the sampling line 45 and the positive electrode post 421 and the negative electrode post 422.

Specifically, the separator 55 is provided with a plurality of channels communicating with each other on the side facing the single-layer cell 41 having the sampling line 45 and the connecting piece 43.

Thus, by installing and matching the plurality of channels with the single battery cells 42, the stacking reliability of the plurality of single battery cells 41 in the third direction can be ensured, and the plurality of channels can also be used as cooling flow channels, so that the cooling liquid can pass through the plurality of channels at the partition plate 55, and the heat dissipation efficiency can be better improved, and referring to the example of fig. 4.

Further, in one embodiment of the present utility model, as shown in fig. 8 and 9, the positive electrode posts 421 and the negative electrode posts 422 connected to the connection piece 43 are distributed along the first direction, and the separator 55 includes: the first partition 46, the first partition 46 has a first passage 461, the first passage 461 is fitted to the connecting piece 43, and the first passage 461 is provided so as to penetrate in the first direction. In this way, the first separator 46 is provided with the first channel 461, the second channel 462 and the third channel 463, and the first channel 461 is disposed through along the first direction so as to be adapted to the connection structure of the positive electrode posts 421 and the negative electrode posts 422 connected to the connection piece 43, which are distributed along the first direction.

Wherein, the first channels 461 are two, and the second channels 462 are arranged between the two first channels 461 in a penetrating manner along the first direction, the third channels 463 are communicated between the first channels 461 and the second channels 462 along the second direction, and at least two third channels 463 are arranged to ensure the installation fit between the first partition 46 and the single cell 42.

Specifically, as shown in fig. 5, the first separator 46 is located on the single cell 42 in the middle of the single-layer cell 41 (i.e., excluding the single cells 42 on both sides of the single-layer cell 41 in the first direction), and the single cells 42 in the middle of the single-layer cell 41 are: the positive electrode posts 421 and the negative electrode posts 422 connected to the connection pieces 43 are distributed along a first direction, so that two first channels 461 are respectively arranged on two sides of the first partition board 46 along the first direction to be installed and matched with the connection pieces 43 on two sides of the single battery cells 42, a second channel 462 is arranged in the middle of the first partition board 46 along the first direction to be installed and matched with the sampling lines 45 in the middle of the single battery cells 42, and a third channel 463 is communicated with the two first channels 461 and the second channels 462 along the second direction to enable the sampling lines 45 to be connected with the positive electrode posts 421 and the negative electrode posts 422 of each single battery cell 42.

Further, in another embodiment of the present utility model, as shown in fig. 10 and 11, the positive electrode posts 421 and the negative electrode posts 422 connected to the connection piece 43 are distributed along the second direction, and the separator 55 includes: the second partition plate 47, the second partition plate 47 has a fourth channel 471, the fourth channel 471 is mounted and matched with the connecting piece 43, and the fourth channel 471 is arranged in a penetrating way along the second direction. In this way, the second separator 47 is provided with a fourth channel 471, a fifth channel 472 and a sixth channel 473, and the fourth channel 471 is arranged through along the second direction so as to be adapted to the connection structure of the positive electrode posts 421 and the negative electrode posts 422 connected to the connection piece 43 along the second direction.

The fourth channel 471 is disposed in the middle of the second separator 47 along the second direction, the fifth channel 472 is disposed in the middle of the second separator 47 along the first direction, and the sixth channel 473 is disposed in both sides of the fifth channel 472 along the first direction, so as to ensure the mounting and matching between the second separator 47 and the single cell 42.

Specifically, as shown in fig. 5, the second separator 47 is located at the single cells 42 at two sides of the single cell 41, and since the positive electrode posts 421 and the negative electrode posts 422 of the single cells 42 at two sides are distributed along the second direction, the fourth channel 471 is disposed in the middle of the second separator 47 along the second direction so as to be mounted in a matching manner with the connecting piece 43, the fifth channel 472 is disposed in the middle of the second separator 47 along the first direction so as to be mounted in a matching manner with the sampling line 45 in the middle of the single cells 42, the sixth channel 473 is respectively disposed at least one side of the fifth channel 472 along the first direction, and one of the sixth channels 473 can be mounted in a matching manner with the transverse connecting piece 43 at one side of the single cell 42, and can also be connected with the positive electrode posts 421 and the negative electrode posts 422 of each single cell 41 for the sampling line 45.

In some embodiments, the separator 55 is provided with a first plug portion, the single-layer cell 41 is provided with a second plug portion, and the separator 55 is fixedly mounted with the single-layer cell 41 through plug-fit engagement of the first plug portion and the second plug portion.

Thus, when two single-layer electric cores 41 are stacked in the third direction, the partition board 55 is placed on one single-layer electric core 41, the first plug-in part of the partition board 55 is matched with the second plug-in part of the single-layer electric core 41 in a plug-in mode, then one single-layer electric core 41 is placed on the partition board 55, the first plug-in part of the partition board 55 is matched with the second plug-in part of the single-layer electric core 41 in a plug-in mode, and therefore stacking between the two single-layer electric cores 41 can be ensured.

In some embodiments, at least one boss 464 is provided on one of the separator 55 and the single-layer cell 41, and at least one recess 423 is provided on the other of the separator, and the boss 464 and the recess 423 are connected in a one-to-one correspondence.

As shown in fig. 7 and 8, when two single-layer cells 41 are stacked in the third direction, the separator 55 is first placed on one single-layer cell 41, and the connection piece 43 and the sampling line 45 of the single-layer cell 41 can be mounted and matched with each other by using multiple channels of the separator 55. Then, when one single-layer cell 41 is placed on the partition 55, the boss 464 of the partition 55 is utilized to be in installation fit with the groove 423 of the single-layer cell 41, so as to ensure that a plurality of single-layer cells 41 are stacked in the third direction.

As shown in fig. 3, single-layer cell 41 includes a positive terminal 48 and a negative terminal 49. That is, if the battery module includes only one single-layer battery cell 41, the positive electrode connection terminal 48 and the negative electrode connection terminal 49 of the single-layer battery cell 41 are used for connection with an external interface; if the battery module comprises two single-layer battery cells 41, the positive electrode connection end 48 of one single-layer battery cell 41 is connected with the negative electrode connection end 49 of the other single-layer battery cell 41, and the negative electrode connection end 49 of one single-layer battery cell 41 is connected with the positive electrode connection end 48 of the other single-layer battery cell 41; if the battery module includes more than two single-layer battery cells 41, the positive electrode connection end 48 of one single-layer battery cell 41 of the two adjacent single-layer battery cells 41 is connected with the negative electrode connection end 49 of the other single-layer battery cell 41, and the positive electrode connection end 48 of one single-layer battery cell 41 and the negative electrode connection end 49 of one single-layer battery cell 41 are connected with an external interface.

And the positive electrode connection terminal 48 and the negative electrode connection terminal 49 are disposed opposite to each other in the second direction or the first direction, and in the adjacent two single-layer cells 41, the positive electrode connection terminal 48 of one single-layer cell 41 is disposed close to the negative electrode connection terminal 49 of the other single-layer cell 41. As shown in fig. 4, the positive electrode connection end 48 and the negative electrode connection end 49 of the single-layer battery cells 41 are disposed opposite to each other along the second direction, and when two adjacent single-layer battery cells 41 are stacked in the third direction, the positive electrode connection end 48 of one single-layer battery cell 41 is disposed close to the negative electrode connection end 49 of the other single-layer battery cell 41, so as to facilitate electrical connection between the two adjacent single-layer battery cells 41.

It should be noted that, the positive electrode connection end 48 of the single-layer battery cell 41 is a positive electrode post 421 of one of the single-layer battery cells 42 in the single-layer battery cell 41, and the negative electrode connection end 49 of the single-layer battery cell 41 is a negative electrode post 422 of the other single-layer battery cell 42 in the single-layer battery cell 41, and the positive electrode post 421 and the negative electrode post 422 are disposed opposite to each other along the second direction or the first direction.

As shown in conjunction with fig. 2, the battery box 100 further includes: a plurality of first connection rows 50, wherein in two adjacent single-layer cells 41, the positive electrode connection end 48 of one single-layer cell 41 is connected with the negative electrode connection end 49 of the other single-layer cell 41 through the first connection rows 50; and/or, the battery case 100 further includes: the two second connection rows 51 are arranged on the first box body 1, the outer sides of the single-layer battery cells 41 are provided with a total positive electrode 53 and a total negative electrode 54, the total positive electrode 53 is formed by connecting the positive electrode connecting end 48 of one single-layer battery cell 41 with a first connection sheet, the total negative electrode 54 is formed by connecting the negative electrode connecting end 49 of the other single-layer battery cell 41 with a second connection sheet, and the total positive electrode 53 and the total negative electrode 54 are respectively connected to the communication interface 52 through the two second connection rows 51.

In this way, the positive electrode connection terminal 48 of one single-layer cell 41 of the adjacent two single-layer cells 41 is connected in series with the negative electrode connection terminal 49 of the other single-layer cell 41 through the first connection line 50, for example, a copper bar.

In addition, if the battery module only includes one single-layer battery cell 41, the positive electrode connection end 48 of the single-layer battery cell 41 is connected with the first connection piece and extends to the outside to form a total positive electrode 53, and the negative electrode connection end 49 is connected with the second connection piece and extends to the outside to form a total negative electrode 54, and the total positive electrode 53 and the total negative electrode 54 of the battery module are respectively connected to the communication interface 52 on the first box body 1 through the second connection row 51, so that serial-parallel connection between the battery boxes 100 is facilitated. If the battery module comprises more than two single-layer battery cells 41, the positive electrode connection end 48 of one single-layer battery cell 41 is connected with a first connection and extends to the outer side of the single-layer battery cell 41 to form a total positive electrode 53 of the battery module, the negative electrode connection end 49 of the other single-layer battery cell 41 is connected with a second connection piece and extends to the outer side of the single-layer battery cell 41 to form a total negative electrode 54 of the battery module, and the total positive electrode 53 and the total negative electrode 54 are respectively connected to the communication interface 52 through two second connection rows 51.

In addition, the sampling wires 45 in each single-layer battery cell 41 are collected to the communication interface 52 through the wire harness, so that the safety condition of each single-layer battery cell 41 and even the single-layer battery cell 41 in the electric module can be monitored in real time.

As shown in fig. 1 to 4, the battery box 100 includes: the cooling module 3 and the second box 2 are connected with the first box 1, the cooling module 3 is arranged in the second box 2, the cooling module 3 is communicated with the first box 1, and cooling liquid circularly flows between the cooling module 3 and the first box 1. In this way, the first box 1 is filled with the cooling liquid, so that the battery module 4 is fully contacted with the cooling liquid, and the cooling liquid can continuously carry away heat generated by the battery module 4 through circulating flow of the cooling liquid in the cooling module 3 and the first box 1, thereby realizing effective heat dissipation.

As shown in fig. 12 to 15, the cooling module 3 includes: the heat exchange device 31 and the circulating device 32 connected with the heat exchange device 31, the first box 1 comprises a water inlet and a water outlet, the heat exchange device 31 is communicated with the water outlet of the first box 1, and the circulating device 32 is communicated with the water inlet of the first box 1. In this way, the heat exchange device 31 is connected to the water outlet of the first tank 1, so that the cooling liquid carrying heat in the first tank 1 flows into the heat exchange device 31 through the water outlet for cooling, then the cooled cooling liquid enters the circulation device 32, and the circulation device 32 re-conveys the cooling liquid into the first tank 1 through the water inlet of the first tank 1.

In some embodiments, the heat exchange device 31 includes: the water inlet pipe 311 and the radiating pipe 312, the water inlet pipe 311 is communicated between one end of the radiating pipe 312 and the water outlet, and the other end of the radiating pipe 312 is communicated with the circulating device 32. In this way, the cooling liquid carrying heat enters the cooling tube 312 from the water outlet of the first box 1 through the water inlet tube 311, and exchanges heat with the external environment through the cooling tube 312, so as to cool the cooling liquid. The cooled coolant is fed into the circulation device 32 via a pipe.

In some embodiments, the heat exchange device 31 further comprises: the heat radiation fins 313, the heat radiation fins 313 are arranged on the heat radiation pipes 312, and the heat exchange windows 314 are arranged on the second box body 2, and the heat exchange windows 314 are arranged towards the heat radiation pipes 312 and the heat radiation fins 313. In this way, the heat radiating fins 313 are disposed on the heat radiating tube 312, and the heat of the cooling liquid can be absorbed by the heat radiating tube 312 by utilizing the characteristic of large heat radiating area of the heat radiating fins 313, and then the heat is exchanged with the external cooler air through the heat exchanging window 314 by the heat radiating fins 313, so as to rapidly cool the cooling liquid. In addition, a heat dissipation fan may be disposed at the heat exchange window 314 to better improve heat dissipation efficiency.

In some embodiments, the circulation device 32 includes: the water pump 321, the water pump inlet pipe 322 and the water pump outlet pipe 323, the water pump inlet pipe 322 communicates between the water pump 321 and the heat exchange device 31, and the water pump outlet pipe 323 communicates between the water pump 321 and the water inlet of the first box 1. In this way, the water pump 321 pumps the cooled cooling liquid through the water inlet pipe 311 to pressurize the cooling liquid, and then the cooling liquid is input into the first box 1 through the water pump water outlet pipe 323 to cool the battery module again.

In some embodiments, the first casing 1 includes a casing body including a bottom plate and a side plate disposed at a periphery of the bottom plate, and a cover plate covering the casing body and disposed opposite to the bottom plate, the battery module 4 is disposed on the bottom plate, the water inlet of the first casing 1 is disposed on the bottom plate of the first casing 1, and the water outlet is disposed on the cover plate of the first casing 1. So, set up the water inlet on the bottom plate of first box 1, the delivery port setting of first box 1 is on the apron of first box 1, circulating device 32 is through the inside water pump 321 with the coolant liquid input first box 1 bottom after the extraction pressurization, the coolant liquid distributes around individual layer electric core 41 through the cooling runner between individual layer electric core 41 and the runner between individual layer electric core 41 and first box 1, can make the coolant liquid in time absorb the heat of battery module release, when coolant liquid arrives delivery port position department, can follow the delivery port inflow in the heat exchange device 31. The heat exchange device 31 absorbs heat in the coolant and exchanges heat with the outside air, thereby cooling the coolant. The cooled cooling liquid flows into the circulating device 32 again, under the pumping and pressurizing of the water pump 321, the cooling liquid enters from the bottom of the first box body 1 and flows out from the top, and the electric core heat carried in the cooling liquid is more in this way, so that the cooling effect is better.

Specifically, the second casing 2 includes: an upper case 21 and a lower case 22, a heat exchange device 31 is provided in the upper case 21, and a circulation device 32 is provided in the lower case 22. In this way, the heat exchange device 31 is disposed on the upper case 21, where the upper case 21 has a first chamber 211 and a second chamber 212, the first chamber 211 is located above the second chamber 212, and the volume of the first chamber 211 is smaller than that of the second chamber 212, the second chamber 212 is provided with a heat dissipation tube 312 and a heat dissipation fin 313, the cooling liquid carrying heat enters the first chamber 211 through the water inlet tube 311, and then enters the heat dissipation tube 312 of the second chamber 212 through a through hole at the bottom of the first chamber 211 to dissipate the heat of the cooling liquid. The first chamber 211 may function as a storage buffer.

And, be provided with installation cavity 221 in lower box 22, water pump 321 installs in installation cavity 221, and installation cavity 221 is worn to establish by the one end of water pump inlet tube 322 and is connected with water pump 321 to the other part sets up in lower box 22, and installation cavity 221 is worn to establish by the one end of water pump outlet pipe 323 and is connected with water pump 321, and the water inlet of first box 1 is connected to the other end. In this way, the coolant cooled in the radiator 312 flows into the lower case 22, and under the suction pressure of the water pump 321, the coolant in the lower case 22 is sucked into the water pump 321 through the water pump inlet pipe 322 and pumped into the first case 1 from the water pump outlet pipe 323.

An electrical device according to an embodiment of the second aspect, comprises: and a battery case 100.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A battery box (100), characterized by comprising:

a first case (1);

a battery module (4), the battery module (4) being disposed in the first case (1), the battery module (4) comprising: the cooling device comprises a plurality of single-layer electric cores (41) and a partition board (55), wherein the single-layer electric cores (41) are stacked in a third direction through the partition board (55), and reserved gaps (44) are formed in the single-layer electric cores (41) to form cooling flow channels.

2. The battery compartment (100) of claim 1, wherein the single layer cell (41) comprises: the battery pack comprises a plurality of single battery cells (42), wherein the single battery cells (42) are arranged in a first direction and/or a second direction to form single-layer battery cells (41), a reserved gap (44) is arranged between every two adjacent single battery cells (42) in each single-layer battery cell (41), and the first direction, the second direction and the third direction are mutually perpendicular.

3. The battery compartment (100) of claim 2, wherein the single-layer cell (41) further comprises: connection piece (43), monomer electric core (42) are provided with positive pole (421) and negative pole (422) of interval distribution in one in the one deck electric core (41), adjacent two in monomer electric core (42) one of them positive pole (421) of monomer electric core (42) and another negative pole (422) of monomer electric core (42) are adjacent to be set up, connection piece (43) are connected in adjacent one of them positive pole (421) of monomer electric core (42) and another on negative pole (422) of monomer electric core (42).

4. The battery compartment (100) of claim 3, wherein the single-layer cell (41) further comprises: sampling line (45), sampling line (45) with monomer electricity core (42) electricity is connected and sets up anodal post (421) with between negative pole post (422), sampling line (45) with anodal post (421), negative pole post (422) and connection piece (43) all interval setting.

5. The battery box (100) according to claim 4, wherein the separator (55) is provided with a plurality of passages communicating with each other, one passage is fitted with the connecting piece (43), one passage is fitted with the sampling line (45), and one passage is a connecting passage of the sampling line (45) with the positive electrode post (421) and the negative electrode post (422).

6. The battery box (100) according to claim 5, wherein the positive electrode posts (421) and the negative electrode posts (422) connected to the connection pieces (43) are distributed along the first direction, and the separator (55) includes: the first partition board (46), the first partition board (46) is provided with a first channel (461), the first channel (461) is in installation fit with the connecting piece (43), and the first channel (461) is arranged in a penetrating way along the first direction.

7. The battery box (100) according to claim 5, wherein the positive electrode posts (421) and the negative electrode posts (422) connected to the connection pieces (43) are distributed along the second direction, the separator includes: and a second partition plate (47), wherein the second partition plate (47) is provided with a fourth channel (471), the fourth channel (471) is in installation fit with the connecting sheet (43), and the fourth channel (471) is arranged in a penetrating way along the second direction.

8. The battery box (100) according to claim 1, wherein the separator (55) is provided with a first plugging portion, the single-layer battery cell (41) is provided with a second plugging portion, and the separator (55) and the single-layer battery cell (41) are fixedly installed through plugging cooperation of the first plugging portion and the second plugging portion.

9. The battery box (100) according to claim 1, wherein one of the separator (55) and the single-layer cell (41) is provided with at least one boss (464), the other one of the separator and the single-layer cell is provided with at least one groove (423), and the boss (464) and the groove (423) are connected in a one-to-one correspondence.

10. The battery box (100) according to claim 1, wherein the single-layer cells (41) include a positive electrode connection end (48) and a negative electrode connection end (49), the positive electrode connection end (48) and the negative electrode connection end (49) being disposed opposite to each other in a first direction or a second direction, and the positive electrode connection end (48) of one single-layer cell (41) being disposed close to the negative electrode connection end (49) of the other single-layer cell (41) among adjacent single-layer cells (41).

11. The battery compartment (100) of claim 10, wherein the battery compartment (100) further comprises: a first connection row (50), wherein in two adjacent single-layer electric cores (41), the positive electrode connection end (48) of one single-layer electric core (41) is connected with the negative electrode connection end (49) of the other single-layer electric core (41) through the first connection row (50); and/or the number of the groups of groups,

the battery box (100) further includes: two second connection rows (51), be provided with communication interface (52) on first box (1), a plurality of the outside of individual layer electric core (41) is equipped with total positive pole (53) and total negative pole (54), total positive pole (53) are one of them the positive pole link (48) of individual layer electric core (41) connects first connection piece formation, total negative pole (54) are one of them the negative pole link (49) of individual layer electric core (41) connects the second connection piece formation, total positive pole (53) with total negative pole (54) are connected to through two respectively second connection row (51) communication interface (52).

12. The battery box (100) according to claim 1, wherein the battery box (100) further comprises: the cooling device comprises a second box body (2) and a cooling module (3), wherein the second box body (2) is connected with a first box body (1), the cooling module (3) is arranged in the second box body (2) and is communicated with the first box body (1), and cooling liquid circularly flows between the cooling module (3) and the first box body (1).

13. The battery compartment (100) according to claim 12, wherein the cooling module (3) comprises: the heat exchange device (31) and with circulating device (32) that heat exchange device (31) are connected, first box (1) include water inlet and delivery port, the water inlet of first box (1) with circulating device (32) intercommunication, the delivery port of first box (1) with heat exchange device (31) intercommunication.

14. The battery compartment (100) according to claim 13, wherein the heat exchange device (31) comprises: the water inlet pipe (311) and the radiating pipe (312), the water inlet pipe (311) is communicated between one end of the radiating pipe (312) and the water outlet of the first box body (1), and the other end of the radiating pipe (312) is communicated with the circulating device (32).

15. The battery compartment (100) according to claim 14, wherein the heat exchanging device (31) further comprises: radiating fins (313), radiating fins (313) set up on cooling tube (312), just be provided with heat exchange window (314) on second box (2), heat exchange window (314) orientation cooling tube (312) with radiating fins (313) set up.

16. The battery compartment (100) according to claim 13, wherein the circulation device (32) includes: the water pump water inlet pipe (322) is communicated between the water pump (321) and the heat exchange device (31), and the water pump water outlet pipe (323) is communicated between the water pump (321) and the water inlet of the first box body (1).

17. The battery box (100) according to claim 13, wherein the first box (1) comprises a box body and a cover plate, the box body comprises a bottom plate and a side plate arranged on the periphery of the bottom plate, the cover plate covers the box body and is arranged opposite to the bottom plate, the battery module (4) is arranged on the bottom plate, the water inlet of the first box (1) is arranged on the bottom plate of the first box (1), and the water outlet of the first box (1) is arranged on the cover plate of the first box (1).

18. The battery box (100) according to claim 13, wherein the second box (2) includes: the heat exchange device comprises an upper box body (21) and a lower box body (22), wherein the heat exchange device (31) is arranged in the upper box body (21), and the circulating device (32) is arranged in the lower box body (22).

19. An electrical device, comprising: the battery compartment (100) of any of claims 1-18.