CN221176475U - Battery pack and vehicle - Google Patents

Abstract

The utility model discloses a battery pack and a vehicle, wherein the battery pack comprises: at least two layers of battery cores and a box body; the box body comprises at least two layers of accommodating cavities and at least two distribution boxes; at least two distribution boxes are in one-to-one correspondence with at least two layers of accommodating cavities, and each distribution box is arranged in the corresponding accommodating cavity; and at least two layers of electric cores are in one-to-one correspondence with at least two layers of accommodating cavities, and each layer of electric core is arranged in the corresponding accommodating cavity. The battery cells can be more compactly arranged in the battery pack, and the space in the height and width directions of the battery pack can be fully utilized; in addition, the utility model is provided with the distribution boxes in each accommodating cavity, so that each layer of electric core corresponds to one distribution box, each electric core is connected into the corresponding distribution box through the lead, the length of the connecting lead between the electric core and the distribution box can be shortened, and the lead connection between the electric core and the distribution box is simplified.

Description

Battery pack and vehicle

Technical Field

The present application relates to the field of batteries, and more particularly to a battery pack and a vehicle.

Background

Currently, in a battery pack, after a battery module is formed by assembling an electric core, the battery module is integrated into the battery pack. However, in this integrated mode, because the battery core is integrated into the battery module and the structure such as the pull rod clamping plate for binding the battery core is required to be added, a certain battery pack space is occupied, and the energy density of the battery pack is not high. In the battery pack in the related art, the battery cell is usually designed in a single-layer battery cell mode, and the defect that the lead connection between the battery cell and the distribution box is complex due to improper distribution box arrangement mode exists.

Disclosure of Invention

The present utility model has been made in order to solve at least one of the above problems. According to a first aspect of the present utility model, there is provided a battery pack comprising: at least two layers of battery cores and a box body. The box body comprises at least two layers of accommodating cavities and at least two distribution boxes; the at least two distribution boxes are in one-to-one correspondence with the at least two layers of accommodating cavities, and each distribution box is arranged in the corresponding accommodating cavity; and the at least two layers of electric cores are in one-to-one correspondence with the at least two layers of accommodating cavities, and each layer of electric core is arranged in the corresponding layer of accommodating cavity.

In one embodiment of the application, the at least two distribution boxes are disposed at the same end of the box.

In one embodiment of the present application, any two adjacent distribution boxes are connected by an electrically conductive connection line.

In one embodiment of the application, one of the at least two distribution boxes is provided with an electrical energy output interface.

In one embodiment of the application, any two adjacent layers of the accommodating chambers are separated by a cold plate.

In one embodiment of the application, at least one partition board is further arranged in each layer of accommodating cavity, the at least one partition board divides the same layer of accommodating cavity into at least two accommodating subchambers, and each accommodating subchamber is opposite to the distribution box in the same layer of accommodating cavity; each layer of the battery cells comprises at least two rows of battery cells; the at least two rows of electric cores are in one-to-one correspondence with the at least two accommodating subchambers, and each row of electric cores is arranged in the corresponding accommodating subchambers.

In one embodiment of the application, each row of the battery cells comprises a plurality of battery cells, and the battery cells are sequentially arranged from the distribution box close to the same layer to the direction away from the distribution box.

In one embodiment of the application, the number of the partition boards in the accommodating cavities of different layers is the same, and the partition boards are opposite to each other, and the cold boards in the different accommodating subchambers are separated by the partition boards.

In one embodiment of the application, an exhaust channel and an exhaust port are arranged in each accommodating subchamber; the exhaust channel is used for collecting the gas exhausted by the battery cell in the accommodating subchamber and exhausting the collected gas from the exhaust port in the same accommodating subchamber.

According to a second aspect of the present application, there is provided a vehicle comprising: the vehicle body and any one of the battery packs arranged on the vehicle body.

According to the battery pack and the vehicle provided by the embodiment of the application, at least two layers of electric cores are arranged in the battery pack, at least two layers of accommodating cavities and at least two distribution boxes are arranged in the box body of the battery pack, and each layer of electric core and each distribution box are arranged in the corresponding accommodating cavity. Compared with the prior art that a single-layer single-row battery core is integrated into a battery pack after forming a battery module, the battery pack provided by the application adopts the arrangement mode of at least two layers of battery cores, so that the battery cores can be compactly distributed in the battery pack, and the space in the height and width directions of the battery pack can be fully utilized; in addition, the application is provided with the distribution boxes in each accommodating cavity, so that each layer of electric core corresponds to one distribution box, each electric core is connected into the corresponding distribution box through the lead, the length of the connecting lead between the electric core and the distribution box can be shortened, and the lead connection between the electric core and the distribution box is simplified. Moreover, due to the configuration mode of the independent distribution boxes of the electric cores in different layers, the electric core grouping mode adopting different chemical systems can be selected from the electric cores in different layers.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic exploded view of a battery pack according to an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view of a battery pack according to an embodiment of the present utility model;

Fig. 3 is an external view of a battery pack according to an embodiment of the present utility model;

FIG. 4 is a top view of a layer of receiving chambers according to one embodiment of the present utility model;

FIG. 5 is a bottom view of a layer of receiving cavities according to one embodiment of the present utility model;

Fig. 6 is a schematic diagram of a split-chamber exhaust according to an embodiment of the utility model.

Reference numerals:

10-cell 20-accommodation cavity 201-accommodation subchamber 21-first cover plate

22-Second cover plate 23-side beam 30-distribution box 31-conductive connecting wire

32-Electric energy output interface 40-cold plate 50-partition 61-explosion-proof valve

62-First exhaust passage 63-second exhaust passage

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, exemplary embodiments according to the present utility model will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present utility model and not all embodiments of the present utility model, and it should be understood that the present utility model is not limited by the example embodiments described herein. Based on the embodiments of the utility model described in the present application, all other embodiments that a person skilled in the art would have without inventive effort shall fall within the scope of the utility model.

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

It should be understood that the present utility model may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In order to provide a thorough understanding of the present utility model, detailed structures will be presented in the following description in order to illustrate the technical solutions presented by the present utility model. Alternative embodiments of the utility model are described in detail below, however, the utility model may have other implementations in addition to these detailed descriptions.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

The present application provides a battery pack, referring to fig. 1 and 2, comprising: at least two layers of cells 10 and a case. Wherein the box body comprises at least two layers of accommodating cavities 20 and at least two distribution boxes 30; at least two distribution boxes 30 are in one-to-one correspondence with at least two layers of accommodating cavities 20, and each distribution box 30 is arranged in the corresponding accommodating cavity 20; and at least two layers of battery cells 10 are in one-to-one correspondence with at least two layers of accommodating cavities 20, and each layer of battery cells 10 is arranged in the corresponding layer of accommodating cavity 20.

In the above-mentioned scheme, set up two-layer at least electric core 10 in the battery package, and set up two-layer at least and hold chamber 20 and two at least block terminal 30 in the box of battery package, every electric core 10 and every block terminal 30 all set up in corresponding one deck holds the intracavity 20. Compared with the prior art that a single-layer single-row battery cell 10 is integrated into a battery pack after forming a battery module, the battery pack provided by the application adopts the arrangement mode of at least two layers of battery cells 10, so that the battery cells 10 can be more compactly arranged in the battery pack, and the space in the height and width directions of the battery pack can be fully utilized; in addition, the application arranges one distribution box 30 in each accommodating cavity 20, so that each layer of battery cells 10 corresponds to one distribution box 30, each battery cell 10 is connected into the corresponding distribution box 30 through a wire, and the length of the connecting wire between the battery cell 10 and the distribution box 30 can be shortened, thereby simplifying the wire connection between the battery cell 10 and the distribution box 30. Moreover, due to the configuration mode of the independent distribution boxes 30 of the cells 10 of different layers, the cell 10 grouping mode adopting different chemical systems can be selected from the cells 10 of different layers. For example, a ternary cell 10 having a small height dimension may be selected for use in one of the layers of cells 10 to reduce the height of the overall battery pack and increase the energy density of the overall battery pack. The following describes each of the above structures in detail with reference to the accompanying drawings.

In determining the number of layers of the battery cells 10 in the battery pack, the number of layers of the battery cells 10 in the battery pack may be at least two. Specifically, the number of layers of the battery cell 10 in the battery pack may be two, three, four or more. The number of layers of the battery cell 10 in the battery pack shown in fig. 1 is two. The battery pack adopts the arrangement mode of at least two layers of battery cells 10, so that the space of the battery pack can be fully utilized, and the energy density of the battery pack is improved.

As shown in fig. 1 and 2, the number of layers of the accommodating cavities 20 contained in the box is at least two, at least two layers of the battery cells 10 are in one-to-one correspondence with at least two layers of the accommodating cavities 20, and each layer of the battery cells 10 is arranged in the corresponding one layer of the accommodating cavity 20. I.e. the number of layers of the battery cells 10 is equal to the number of layers of the accommodating cavities 20, and each layer of accommodating cavity 20 is internally provided with one layer of battery cells 10. As shown in fig. 2, the number of the battery cells 10 is two, the number of the accommodating cavities 20 is also two, and each accommodating cavity 20 is internally provided with one battery cell 10.

As shown in fig. 1, at least two distribution boxes 30 are further disposed in the box body, the at least two distribution boxes 30 are in one-to-one correspondence with the at least two layers of accommodating cavities 20, and each distribution box 30 is disposed in the corresponding accommodating cavity 20. When each of the distribution boxes 30 is disposed within the corresponding receiving cavity 20, various manners may be employed. For example, each of the distribution boxes 30 may be disposed at an end position corresponding to the receiving cavity 20, thereby facilitating the electrical connection of the battery cells 10 to the outside. In a preferred embodiment, at least two distribution boxes 30 may be disposed at the same end of the box, as shown in fig. 1, with the distribution boxes 30 each disposed on the front side of the battery pack. Of course, it should be noted that the distribution boxes 30 of different layers are not limited to the above-described arrangement at the same end of the battery pack, and may be arranged in different manners. A plurality of modules can be arranged in each distribution box 30, a battery energy distribution unit can be arranged in each distribution box 30, and modules such as a battery information collector and the like can be further arranged.

Illustratively, as shown in FIG. 1, any two adjacent switchboards 30 may be connected by a conductive connection line 31. When the distribution boxes 30 are all arranged at the same end of the box body, the conductive connecting wire 31 can be a simple straight line, so that the electric connection between different distribution boxes 30 is simplified. A battery management system, a battery information collection module, and the like may be provided in each of the distribution boxes 30. By providing an independent distribution box 30 for each layer of the battery cells 10, the distribution box 30 is electrically connected through the periphery, and high-voltage arc discharge of the distribution box 30 caused by gas mess strings after thermal runaway is effectively avoided. Moreover, due to the configuration mode of the independent distribution boxes 30 of the cells 10 of different layers, the cell 10 grouping mode adopting different chemical systems can be selected from the cells 10 of different layers. For example, a ternary cell 10 having a small height dimension may be selected for use in one of the layers of cells 10 to reduce the height of the overall battery pack and increase the energy density of the overall battery pack.

For example, as shown in fig. 1, at least one of the two distribution boxes 30 is provided with a power output interface 32, that is, although there are a plurality of distribution boxes 30, only one of the distribution boxes 30 is provided with the power output interface 32, and the other distribution boxes 30 are electrically connected with the distribution box 30 provided with the power output interface 32 to output power to the outside.

For example, referring to fig. 1, 2, 4 and 5, any adjacent two-layered accommodation chambers 20 may be separated by a cold plate 40. Referring to fig. 1, the case may include opposite first and second cover plates 21 and 22, and a side rail 23 connected between the first and second cover plates 21 and 22, and a receiving chamber 20 is formed in the case by the first and second cover plates 21 and 22 and the side rail 23, i.e., the side rail 23 surrounds at least two layers of the battery cells 10. With reference to fig. 1, the first cover plate 21, the side rail 23, and the second cover plate 22 may be coupled together by means such as, but not limited to, bolts. Referring to fig. 1 and 2, at least one layer of cold plate 40 may be disposed between the first cover plate 21 and the second cover plate 22, and the cavity in the case may be divided into accommodating chambers 20 located at different layers by the cold plate 40. The cold plate 40 may be a direct cold plate 40 or a water-cooled plate 40. By adopting the mode, the heat radiation area between the cold plate 40 and the battery cells 10 can be increased, the cooling and heat dissipation effects are improved, the cold plate 40 is arranged between the battery cells 10 of different layers, the battery cells 10 of each layer are effectively separated, mutual interference between the battery cells 10 of different layers is prevented, and the problem of thermal runaway high voltage is relieved. It should be understood that the foregoing is merely illustrative of one arrangement, and that other arrangements may be employed.

For example, referring to fig. 1, 4 and 5, at least one partition 50 is further disposed in each layer of accommodating chambers 20, the at least one partition 50 divides the same layer of accommodating chambers 20 into at least two accommodating sub-chambers 201, and each accommodating sub-chamber 201 is located opposite to the distribution box 30 in the same layer of accommodating chambers 20. Each layer of battery cells 10 comprises at least two rows of battery cells 10, the at least two rows of battery cells 10 are in one-to-one correspondence with the at least two accommodating subchambers 201, and each row of battery cells 10 is arranged in the corresponding accommodating subchamber 201. That is, each layer of the electric core 10 may include at least two rows of electric cores 10, each row of electric cores 10 in the at least two rows of electric cores 10 is respectively disposed in the independent accommodating subchamber 201, and two adjacent rows of electric cores 10 in the same layer of electric cores 10 are separated by a partition 50, so that the electric cores 10 in different rows are not interfered with each other, and the risk of opposite spraying of the electric core 10 gas during thermal runaway is reduced. In the above manner, each layer of accommodating cavity 20 is divided into independent accommodating subchambers 201 by the cold plate 40 and the partition plate 50, so that each row of battery cells 10 are positioned in the independent cavities, and the thermal runaway is ensured not to interfere with each other. When disposed, referring to fig. 1, the partition 50 may be fixed to the side rail 23 such that each layer of the accommodation chamber 20 is divided into at least two independent accommodation subchambers 201 by the partition 50 within each layer of the accommodation chamber 20.

As shown in fig. 1, each layer of cells 10 includes two rows of cells 10, and as shown in fig. 4 and 5, each layer of accommodating chambers 20 is partitioned into two independent accommodating sub-chambers 201 by a partition 50, and each accommodating sub-chamber 201 is provided with one row of cells 10. In determining the number of rows of cells 10 in each layer of cells 10, each layer of cells 10 may include two rows of cells 10, three rows of cells 10, four rows of cells 10, or more rows of cells 10, for example. At least two rows of cells 10 are arranged in each layer of cells 10, so that the arrangement density of the cells 10 can be improved, the space inside the battery pack is fully utilized, and the energy density of the battery pack is further improved.

In providing each row of cells 10, a variety of ways may be used. For example, referring to fig. 1, each row of the battery cells 10 may include a plurality of battery cells 10, and the plurality of battery cells 10 are sequentially arranged from the distribution box 30 close to the same layer to a direction away from the distribution box 30. Having the distribution box 30 directly opposite the non-electrode ends of each row of cells 10 reduces the risk of cell 10 gas being directly injected into a module such as, but not limited to, a battery energy distribution unit within the distribution box 30 during thermal runaway. Meanwhile, the modules in the distribution box 30 and each row of battery cells 10 are also convenient to electrically connect, so that the wiring length in the battery pack is reduced, and the risk of breakdown of a high-voltage loop is reduced.

In determining the type of each cell 10, each cell 10 may be a short cell 10 or a long cell 10, for example. It should be explained that the short cell 10 and the long cell 10 are well defined in the art, the short cell 10 is a cell 10 with a length of the cell 10 not exceeding a certain first preset value, the long cell 10 is a cell 10 with a length exceeding a certain second preset value, the first preset value and the second preset value may be equal or unequal, and even the first preset value may be larger than the second preset value. Illustratively, the short cells 10 may be 400mm-900mm in length and the long cells 600mm-1200mm in length. The shape of the battery cell 10 can be specifically a long battery cell 10 with a thinner thickness, or can be a rectangular block-shaped battery cell 10 with a slightly thicker thickness, and the rectangular block-shaped battery cell 10 can be specifically, but is not limited to, a square aluminum shell battery cell 10 and the like. The shape of the cell 10 may even be a cylindrical cell 10. The positive electrode and the negative electrode of the battery cell 10 are respectively arranged at two ends of the battery cell 10, and the electrodes of the battery cell 10 are opposite to the side beam 23 of the box body or opposite to the separator 50. The positive electrode and the negative electrode in each row of the battery cells 10 can be respectively positioned at two sides of the row of the battery cells 10, so that the interval between different electrodes is increased, and the risk of high-voltage arc breakdown is prevented. And more electric cells 10 can be arranged in each row of electric cells 10, so that the density of the electric cells 10 is improved, and the energy density of the battery pack is improved.

For example, in at least two layers of the battery cells 10, there may be one battery module per each row of the battery cells 10 in at least one row of the battery cells 10. That is, in all the rows of the battery cells 10 of the battery pack, the individual battery cells 10 of a partial row may be directly arranged in the battery pack, so that each row of the battery cells 10 in the partial row of the battery cells 10 may be assembled into one battery module first, and then one battery module is arranged in the battery cell 10 pack as one row of the battery cells 10. For example, all rows of the battery cells 10 in the lowest layer of the battery cells 10 of the at least two layers of the battery cells 10 may be integrated into a battery module first, so as to be conveniently fixed on the second cover plate 22 of the box body, and simplify the overall assembly difficulty of the battery pack. Of course, when selecting which row of cells 10 is used as the battery module, the method is not limited to the method of using all the rows of cells 10 at the uppermost layer as the battery module, and other arrangement methods may be adopted. For example, one layer of the battery cells 10 at the uppermost layer of the at least two layers of the battery cells 10 can be directly assembled in the corresponding accommodating subchamber 201 in a CTP mode, so that the integration and the assemblability of the whole package are effectively improved.

By way of example, all rows of cells 10 in the upper layer of cells 10 of the two layers of cells 10 can be assembled into a battery module first, so that the convenience of assembly of the battery module is utilized, the assemblability is increased, and the overall assembly difficulty of the battery pack is simplified. At this time, all the rows of cells 10 in the lower layer of cells 10 of the two layers of cells 10 can be assembled into CTPs, and it should be explained that CTPs are a module-free arrangement manner, i.e. all the cells 10 in the lower layer of cells 10 can be directly arranged in the accommodating subchambers 201 corresponding to the battery packs.

For example, one cell 10 at the lowest layer of the at least two layers of cells 10 may be assembled as a battery module, and one cell 10 at the highest layer may be assembled as a CTP. Of course, other arrangements may be used in addition to those shown above. For example, at least two layers of battery cells can also all adopt an assembly mode of CTCs, and it should be explained that CTCs refer to that the battery cells are directly integrated on a chassis of a vehicle, and at this time, a cover plate of a battery pack and the chassis of the vehicle can be integrated into an integral structure.

As shown in fig. 1, 4 and 5, for example, the number of the partitions 50 in the accommodating chambers 20 of different layers may be the same and the respective positions may be opposite, and the cold plates 40 in the accommodating sub-chambers 201 may be separated by the partitions 50. When the electric core cooling device is arranged, the two opposite partition plates 50 can be arranged into an integral structure, so that the cold plates 40 in the same layer of adjacent two accommodating subchambers 201 are separated, and the electric cores 10 in different accommodating subchambers 201 can dissipate heat independently without interference. Referring to FIG. 1, a partition 50 and a housing may be provided

In a more preferred embodiment, a vent channel and vent may be provided in each containment subchamber 201; the exhaust channel is used for collecting the gas exhausted from the battery cell 10 in the accommodating sub-cavity 201 and exhausting the collected gas from the exhaust port in the same accommodating sub-cavity 201. I.e. an independent exhaust system is provided in each housing sub-chamber 201, so that the exhaust of the cells 10 in different housing sub-chambers 201 does not interfere with each other.

When the exhaust passage is provided, it may be implemented in various ways. One arrangement is described below.

Referring to fig. 6, the exhaust passage may include a plurality of first exhaust passages 62, and one first exhaust passage 62 is provided at each end of the electrodes of each row of the battery cells 10. That is, a first exhaust channel 62 is disposed at a position where the electrodes of each row of the cells 10 are opposite, and the direction of the air flow of the first exhaust channel 62 is substantially the same as the arrangement direction of the cells 10 in each row of the cells 10, so as to be opposite to all the positions of the electrodes on one side of the cells 10 in the same row, so as to collect the air sprayed from the electrodes on one side of the cells 10 in the same row. A plurality of gas inlets may be provided in the first exhaust passage 62, each corresponding to one of the cells 10, so that the gas generated from each cell 10 flows into the first exhaust passage 62 through the gas inlet.

Referring to fig. 1 and 6, an exhaust port is further provided on the case of the battery pack, and an exhaust port is provided in each accommodating sub-chamber 201, and an explosion-proof valve 61 may be provided at each exhaust port, so as to facilitate the pressure discharge of the gas generated in the battery pack, and reduce the possibility of explosion of the battery pack. As shown in fig. 1 and 6, each air vent may be located at one end of the box body away from the distribution box 30, so that the air vent is located as far away from the distribution box 30 as possible, and interference to the distribution box 30 is prevented.

The first exhaust passage 62 in each accommodating sub-chamber 201 communicates with the exhaust port in the accommodating sub-chamber 201, so that the gas in the first exhaust passage 62 can be directly exhausted out of the accommodating sub-chamber 201. In communicating the first exhaust passage 62 with the exhaust port, referring to fig. 6, a second exhaust passage 63 may be further provided in each accommodating sub-chamber 201, the second exhaust passage 63 being communicated between the first exhaust passage 62 and the exhaust port for guiding the gas in the first exhaust passage 62 to the position of the exhaust port and discharging from the exhaust port. It should be understood that the foregoing is merely illustrative of one way of providing the exhaust passage, and that other arrangements may be employed.

In the various embodiments shown above, by providing at least two layers of cells 10 in a battery pack, and providing at least two layers of receiving chambers 20 and at least two distribution boxes 30 within the housing of the battery pack, each layer of cells 10 and each distribution box 30 is disposed within a corresponding layer of receiving chamber 20. Compared with the prior art that a single-layer single-row battery cell 10 is integrated into a battery pack after forming a battery module, the battery pack provided by the application adopts the arrangement mode of at least two layers of battery cells 10, so that the battery cells 10 can be more compactly arranged in the battery pack, and the space in the height and width directions of the battery pack can be fully utilized; in addition, the application arranges one distribution box 30 in each accommodating cavity 20, so that each layer of battery cells 10 corresponds to one distribution box 30, each battery cell 10 is connected into the corresponding distribution box 30 through a wire, and the length of the connecting wire between the battery cell 10 and the distribution box 30 can be shortened, thereby simplifying the wire connection between the battery cell 10 and the distribution box 30. Moreover, due to the configuration mode of the independent distribution boxes 30 of the cells 10 of different layers, the cell 10 grouping mode adopting different chemical systems can be selected from the cells 10 of different layers. For example, a ternary cell 10 having a small height dimension may be selected for use in one of the layers of cells 10 to reduce the height of the overall battery pack and increase the energy density of the overall battery pack.

In addition, the present application provides a vehicle, referring to fig. 1, comprising: the vehicle body, and any one of the above battery packs provided on the vehicle body. The vehicle may be, for example, but not limited to, a passenger car, a truck, a special engineering vehicle, etc. The vehicle body includes a frame, wheels, a transmission case, a steering wheel, and the like, and the vehicle body is provided with any one of the battery packs shown above.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A battery pack, comprising:

at least two layers of cells;

The box body comprises at least two layers of accommodating cavities and at least two distribution boxes; the at least two distribution boxes are in one-to-one correspondence with the at least two layers of accommodating cavities, and each distribution box is arranged in the corresponding accommodating cavity;

And the at least two layers of electric cores are in one-to-one correspondence with the at least two layers of accommodating cavities, and each layer of electric core is arranged in the corresponding layer of accommodating cavity.

2. The battery pack of claim 1, wherein the at least two distribution boxes are disposed at the same end of the housing.

3. The battery pack of claim 2, wherein any two adjacent distribution boxes are connected by an electrically conductive connection line.

4. A battery pack as claimed in claim 3, wherein one of said at least two electrical boxes is provided with an electrical power output interface.

5. The battery pack of claim 1, wherein any two adjacent layers of said receiving chambers are separated by a cold plate.

6. The battery pack according to claim 5, wherein at least one partition plate is further arranged in each layer of accommodating cavity, the at least one partition plate divides the same layer of accommodating cavity into at least two accommodating subchambers, and each accommodating subchamber is opposite to the distribution box in the same layer of accommodating cavity;

Each layer of the battery cells comprises at least two rows of battery cells; the at least two rows of electric cores are in one-to-one correspondence with the at least two accommodating subchambers, and each row of electric cores is arranged in the corresponding accommodating subchambers.

7. The battery pack of claim 5, wherein each row of cells comprises a plurality of cells, and the plurality of cells are sequentially arranged from the distribution box close to the same layer to a direction away from the distribution box.

8. The battery pack as claimed in claim 6, wherein the separators in the accommodating chambers of different layers are the same in number and opposite in position, respectively, and the cold plates in the different accommodating sub-chambers are separated by the separators.

9. The battery pack of claim 6, wherein each of the accommodating subchambers has a vent passage and a vent port disposed therein;

The exhaust channel is used for collecting the gas exhausted by the battery cell in the accommodating subchamber and exhausting the collected gas from the exhaust port of the same accommodating subchamber.

10. A vehicle, characterized by comprising:

A vehicle body;

the battery pack according to any one of claims 1 to 9 provided on the vehicle body.