CN218632338U - Battery module, battery package and vehicle - Google Patents

Abstract

The application provides a battery module, battery package and vehicle. The battery module includes first, second end, and the battery module still includes: the battery comprises a plurality of battery cells arranged in an array manner, a plurality of inter-battery-cell connecting pieces and a first leading-out piece, wherein each battery cell comprises a body, and a positive pole, a negative pole and an explosion-proof valve which are connected to the body, and the distance between the explosion-proof valve and the positive pole is different from the distance between the explosion-proof valve and the negative pole; connecting piece all connects just, the negative pole post of two adjacent electric cores between each electric core, and the first piece of drawing forth is located the interval region between a plurality of explosion-proof valves to set up with a plurality of electric core connection piece intervals, first drawing forth the piece and extending to the second end from the first end, so that two adjacent explosion-proof valves are located the first different sides of drawing forth the piece, and the first piece of drawing forth is used for drawing forth the positive pole post or the negative pole post of the electric core of first end to the second end. The technical scheme of this application can eliminate the extrusion short circuit of battery module, the risk of vibration inefficacy on guaranteeing that the battery package has better security performance.

Description

Battery module, battery package and vehicle

Technical Field

The application relates to the technical field of batteries, in particular to a battery module, a battery pack and a vehicle.

Background

When designing the battery module, in order to optimize the circuit arrangement and ensure the safety of the battery pack, the positive and negative electrodes positioned on different sides of the battery module are connected to the same side through a plurality of connecting pieces to be led out. However, this may cause a risk of crush short and a risk of vibration failure inside the battery module. How to eliminate the risk of extrusion short circuit and the risk of vibration failure inside the battery module on the basis of ensuring that the battery pack has better safety performance is a subject continuously explored in the industry.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery module, battery package and vehicle, can eliminate the inside extrusion short circuit risk of battery module and vibration inefficacy risk on the basis that guarantees that the battery package has better security performance.

In a first aspect, the present application provides a battery module, the battery module includes first end and the second end that sets up relatively along first direction, the battery module still includes:

the battery comprises a plurality of battery cells, a plurality of battery cells and a plurality of control units, wherein the battery cells are arranged along the first direction, each battery cell comprises a body, and a positive pole, a negative pole and an explosion-proof valve which are connected to the body;

the connecting pieces between the battery cells are connected with the positive pole columns and the negative pole columns of two adjacent battery cells;

the first piece of drawing forth, it is a plurality of that the first piece of drawing forth is located interval region between the explosion-proof valve, the first piece of drawing forth is in with a plurality of the electric core connection piece is in equal interval setting in the second direction, the first piece of drawing forth certainly first end extends to the second end to make adjacent two the explosion-proof valve is located the first not same side of drawing forth the piece, the first piece of drawing forth be used for with the first end the positive post or the negative pole post of electric core are drawn forth to the second end.

It can be understood that, for the security and the reliability of guaranteeing battery module, the upper portion space of the explosion-proof valve of electric core is not allowed to have the conductor to shelter from, consequently the explosion-proof valve setting all need be avoided to connection piece and electrode draw-out piece between electric core in the battery module, but this can make connection piece, electric core between each electric core usually draw-out piece and electrode and take place to overlap between the piece. In the practical use process of battery module, the conductor of the overlap region between connection piece, connection piece and the electrode lead-out piece between each electric core probably takes place the contact between each electric core, causes the battery module short circuit, reduces the security performance of battery package.

Therefore, according to the technical scheme, the first lead-out piece is bent and spanned on the top surface of the battery module along the gap between the anti-explosion valves through the offset anti-explosion valves, the space on the top surface of the battery module can be efficiently utilized, so that the electrode of the battery module is switched to the other end from one end through the first lead-out piece, and the lead-out of the positive electrode and the negative electrode of the battery module at the same side is realized. In addition, because first drawing sheet only relies on extension of self can be from one end switching to the other end, and first drawing sheet and a plurality of electric core connection piece interval setting between, so can effectively avoid among the prior art connection piece between each electric core, electric core connection piece and electrode draw the risk of overlapping between the piece and the vibration inefficacy that leads to between the piece, eliminate because of first drawing sheet and other connection piece contact short circuit risks that lead to effectively improve the security of battery package.

In a possible implementation manner, a plurality of the explosion-proof valves are arranged at intervals along the first direction, and two adjacent explosion-proof valves are arranged at intervals along the second direction.

In a possible embodiment, the first lead-out sheet includes a first connecting portion, a bent portion and a first lead-out portion, and the bent portion is connected between the first connecting portion and the first lead-out portion; the first connecting portion with the first end the positive post or the negative pole post of electric core are connected, the kink is in a plurality of the regional extension of buckling of interval between the explosion-proof valve, the one end that first extraction portion kept away from the kink stretches out the second end the electric core.

In a possible implementation manner, the bent portion includes a plurality of concave portions and a plurality of convex portions, two adjacent concave portions are connected by one convex portion, each concave portion encloses a first area, the first area is used for accommodating one explosion-proof valve, each convex portion encloses a second area, and the second area is used for accommodating one explosion-proof valve.

In a possible implementation manner, the first connecting portion and the bent portion cooperate to define a third region, the third region is configured to accommodate one of the explosion-proof valves, the first leading portion and the bent portion cooperate to define a fourth region, and the fourth region is configured to accommodate one of the explosion-proof valves.

In one possible embodiment, the first lead-out sheet may further include a lap joint portion, one end of the lap joint portion is connected to the positive or negative pole of the battery cell at the first end, and the other end of the lap joint portion is stacked on the first connection portion.

In a possible implementation manner, the battery module further includes a second lead-out piece, the second lead-out piece is connected to the battery cell at the second end, the second lead-out piece and the first lead-out piece are arranged at an interval in the second direction, and the polarity of the second lead-out piece is opposite to the polarity of the first lead-out piece.

In one possible embodiment, the second lead-out piece includes a second connection portion and a second lead-out portion, the second connection portion is connected to the positive pole or the negative pole of the battery cell at the second end, one end of the second lead-out portion is stacked with the second connection portion, the other end of the second lead-out portion extends out of the battery cell at the second end, and the second lead-out portion and the first lead-out portion are disposed at an interval in the second direction.

In a second aspect, the present application further provides a battery pack, which includes a box body and a plurality of battery modules as described above, wherein the battery modules are disposed in the box body.

In a third aspect, the present application further provides a vehicle, which includes a vehicle body and the battery pack as described above, wherein the battery pack is connected to the vehicle body.

Drawings

FIG. 1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a battery pack of the vehicle of FIG. 1;

fig. 3 is a schematic structural view of the battery module shown in fig. 2;

fig. 4 is a schematic structural diagram of one battery cell in the battery module shown in fig. 3;

fig. 5 is a schematic top view of the cell of fig. 4;

fig. 6 is a schematic top view of a plurality of battery cells of the battery module shown in fig. 3;

fig. 7 is a schematic top view of the battery module shown in fig. 3;

fig. 8 is a schematic view illustrating a structure of a first lead tab of the battery module shown in fig. 3;

fig. 9 is another structural view of the first lead tab of the battery module shown in fig. 3.

Detailed Description

For convenience of understanding, terms referred to in the embodiments of the present application are first explained.

A plurality of: two or more than two.

Connecting: it should be understood that, for example, A and B are connected, either directly or indirectly through an intermediate. The following description of the embodiments of the present application will be made with reference to the accompanying drawings.

The embodiment of the application provides a battery module, battery package and vehicle. The Vehicle may be, but is not limited to, a Pure Electric Vehicle (Pure Electric Vehicle/Battery Electric Vehicle, PEV/BEV), a Hybrid Electric Vehicle (HEV), an Extended Range Electric Vehicle (REEV), a Plug-in Hybrid Electric Vehicle (PHEV), and a New Energy Vehicle (New Energy Vehicle).

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to an embodiment of the present disclosure. Vehicle 1000 may include a vehicle body 300 and a battery pack 400, with battery pack 400 connected to vehicle body 300, for powering vehicle 1000.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a battery pack 400 of the vehicle 1000 shown in fig. 1. The battery pack 400 may include a case 200 and the battery module 100, the battery module 100 being provided in the case 200. It should be noted that fig. 2 only schematically shows one battery module 100, but a plurality of battery modules 100 may actually be provided in the battery pack 400, and the plurality of battery modules 100 may be arranged in the housing 200, as will be specifically described below by taking the structure of only one battery module 100 as an example, and the improvement on the battery module 100 can be applied to other battery modules 100 without conflict.

Referring to fig. 3, fig. 3 is a schematic structural diagram of the battery module 100 shown in fig. 2. In the embodiment of the present application, the length direction of the battery module 100 is a first direction X, the width direction of the battery module 100 is a second direction Y, the height direction of the battery module 100 is a third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

The battery module 100 includes a first lead-out sheet 40, a plurality of inter-cell connection sheets 50, a second lead-out sheet 60, and a plurality of cells 30. The plurality of battery cells 30 are connected in series through the plurality of inter-battery-cell connecting sheets 50, and the plurality of battery cells 30 also realize the same-side leading-out of the positive electrode and the negative electrode of the battery module 100 through the first leading-out sheet 40 and the second leading-out sheet 60, which will be specifically described below.

Referring to fig. 3 and fig. 4 in combination, fig. 4 is a schematic structural diagram of one battery cell 30 in the battery module 100 shown in fig. 3.

Each cell 30 includes a body 31, a positive post 32, a negative post 33, and an explosion-proof valve 34. The body 31 has a rectangular shape, and the body 31 has a first center line 311. Positive post 32 and negative post 33 are both connected to body 31. For example, the positive and negative posts 32 and 33 may be symmetrically disposed about the first center line 311. In the embodiment of the present application, the plurality of battery cells 30 are arranged along the first direction X, and the polarities of the poles on the same side of any two adjacent battery cells 30 are opposite. Specifically, in two adjacent battery cells 30, the positive post 32 of one battery cell 30 corresponds to the negative post 33 of another battery cell 30, and the negative post 33 of one battery cell 30 corresponds to the positive post of another battery cell 30. With the arrangement, the polarities of the polar columns at the same side of the two adjacent battery cells 30 are opposite, so that the anode and the cathode of the two adjacent battery cells 30 can be conveniently and quickly connected in series.

An explosion-proof valve 34 is connected to the body 31, the explosion-proof valve 34 being located between the positive post 32 and the negative post 33. In the second direction Y, the distance between the explosion-proof valve 34 and the positive pole column 32 and the distance between the explosion-proof valve 34 and the negative pole column 33 are not the same, that is, the explosion-proof valve 34 is offset. Illustratively, the distance between the explosion-proof valve 34 and the positive post 32 may be greater than the distance between the explosion-proof valve 34 and the negative post 33. Alternatively, the distance between the explosion-proof valve 34 and the positive pole 32 may be smaller than the distance between the explosion-proof valve 34 and the negative pole 33.

In the embodiment of the present application, the position of the explosion-proof valve 34 on the battery cell 30 does not affect the internal structure of the battery cell 30. The explosion-proof valve 34 may be disposed close to the positive post 32 of the battery cell 30 and far from the negative post 33 of the battery cell 30, and the explosion-proof valve 34 may also be disposed close to the negative post 33 of the battery cell 30 and far from the positive post 32 of the battery cell 30, and the following description will take the case where the explosion-proof valve 34 is close to the negative post 33 of the battery cell 30 and far from the positive post 32 of the battery cell 30 as an example, but it should be understood that the invention is not limited thereto.

With continued reference to fig. 3 and 4, the explosion-proof valve 34 has a second center line 341, and the second center line 341 of the explosion-proof valve 34 is spaced from the first center line 311 of the body 31 in the second direction Y. That is, the explosion-proof valve 34 is disposed offset with respect to the symmetrical center line (first center line 311) of the body 31.

It should be noted that, the offset distance between the second center line 341 of the explosion-proof valve 34 and the first center line 311 of the body 31 in the second direction Y may be selected according to an actual application scenario, which is not strictly limited in the embodiment of the present application.

Referring to fig. 5 and fig. 6 in combination, fig. 5 is a top view of the battery cells 30 shown in fig. 4, and fig. 6 is a top view of a plurality of the battery cells 30 of the battery module 100 shown in fig. 3. A plurality of explosion-proof valves 34 are arranged along first direction X interval, and two adjacent explosion-proof valves 34 set up at the interval in second direction Y. That is, two adjacent explosion-proof valves 34 are arranged in a staggered manner, and the staggered explosion-proof valves 34 may form a spacing region, and the spacing region can provide a setting space for the first lead-out piece 40.

It can be understood that the explosion-proof valve of current electric core sets up in the symmetric center of electric core to after a plurality of electric cores constitute the battery module, the explosion-proof valve only can be one and arrange the setting. In the embodiment of the present application, the explosion-proof valves 34 are offset, so that the explosion-proof valves 34 can be arranged in two rows. A certain spacing area can be naturally formed between the two rows of anti-explosion valves 34 for the first lead-out piece 40 to be accommodated therein, so that the anti-explosion valves 34 and the first lead-out piece 40 can be arranged at intervals to avoid each other, thereby preventing the battery module 100 from being out of service due to mutual contact and having good reliability. Illustratively, the spacing regions between the plurality of explosion-proof valves 34 may be undulating.

In one possible embodiment, as shown in fig. 5, the main body 31 may further be provided with a liquid injection hole 35, and the liquid injection hole 35 is used for injecting the electrolyte into the main body 31.

Referring to fig. 3 and 7 in combination, fig. 7 is a top view of the battery module 100 shown in fig. 3. In the embodiment of the present application, the connecting sheets 50 between a plurality of battery cores are arranged in two rows along the second direction Y, and the connecting sheets 50 between a plurality of battery cores in each row are arranged at intervals along the first direction X. Connection piece 50 all sets up along first direction X dislocation between two arbitrary adjacent electric cores in connection piece 50 between a plurality of electric cores, and connection piece 50 all connects anodal post 32 and the negative pole post 33 of two adjacent electric cores 30 between each electric core to make a plurality of electric cores 30 realize establishing ties. In addition, the inter-cell connection pieces 50 are also provided at intervals in the second direction Y with the first lead-out pieces 40.

It is understood that, when a plurality of battery cells 30 are connected in series, the first lead-out tab 40 and the inter-cell connection tab 50 have different potentials, and a safety electrical gap may be formed therebetween. On the one hand, can guarantee that first drawing sheet 40 and electric core connecting piece 50 are not overlapped, can avoid the risk that leads to battery module 100 short circuit because of the conductor contact of overlap region, further improve battery module 100's security performance. On the other hand, there is no overlapping area between the first lead-out sheet 40 and the inter-cell connecting sheet 50, and both do not need to be provided with an insulating protection structure to prevent the conductor in the overlapping area from contacting and short-circuiting, so that the production cost can be saved.

In an embodiment of the present application, the battery module 100 may include a first end 10 and a second end 20, and the first end 10 and the second end 20 are oppositely disposed in the first direction X. The first lead-out piece 40 is located in a spacing area between the explosion-proof valves 34, the first lead-out piece 40 extends from the first end 10 to the second end 20, so that two adjacent explosion-proof valves 34 are located on different sides of the first lead-out piece 40, and the first lead-out piece 40 is used for leading out the positive pole 32 or the negative pole 33 of the battery core 30 located at the first end 10 to the battery core 30 located at the second end 20.

It can be understood that, in order to ensure the safety and reliability of the battery module 100, the upper space of the explosion-proof valve 34 of the battery cell 30 is not allowed to be shielded by a conductor, and therefore, the inter-cell connecting sheets and the electrode lead-out sheets in the battery module 100 need to be arranged away from the explosion-proof valve 34, which usually causes the overlap among the inter-cell connecting sheets, the inter-cell connecting sheets and the electrode lead-out sheets. In the actual use process of the battery module 100, the conductors in the overlapping regions between the inter-cell connecting sheets, and the electrode lead-out sheets may contact with each other, so that the battery module 100 is short-circuited, and the safety performance of the battery pack 400 is reduced.

Thus, the first lead-out piece 40 is arranged, and the first lead-out piece 40 is positioned in the interval area between the explosion-proof valves 34. On the one hand, the first lead-out piece 40 extends from the first end 10 to the second end 20, and can lead out the electrode of the battery cell 30 located at the first end 10 to the second end 20, so that the led-out electrode (positive electrode or negative electrode) and the electrode (negative electrode or positive electrode) of the battery cell 30 at the second end 20 can be both arranged at the second end 20 of the battery module 100, and the lead-out of the positive electrode and the negative electrode of the battery module 100 at the same side is realized. On the other hand, the arrangement position of the first lead-out piece 40 can make full use of the spacing area formed by the offset arrangement of the explosion-proof valve 34, so that the overlap between the first lead-out piece and other inter-cell connecting pieces and electrode lead-out pieces in the battery module 100 can be avoided while the explosion-proof valve 34 is avoided, the extrusion short-circuit risk and the vibration failure risk caused by the overlap between the other inter-cell connecting pieces and the electrode lead-out pieces in the battery module 100 can be eliminated, and the safety performance of the battery pack 400 is improved.

Referring to fig. 7 and 8, fig. 8 is a schematic structural view of the first tab 40 of the battery module 100 shown in fig. 3. In the embodiment of the present application, the first lead sheet 40 may include a first connection portion 41, a bent portion 42, and a first lead portion 43.

The first connection portion 41 is provided with a first connection hole 411, and the first connection hole 411 is used to connect with the positive pole 32 or the negative pole 33 of the battery cell 30 of the first end 10, so as to achieve the function of leading out the positive pole current or the negative pole current of the battery cell 30 of the first end 10. Illustratively, the first connection hole 411 is used for connecting with the positive post 32 of the battery cell 30 at the first end 10, so as to achieve the function of leading out the positive current of the battery cell 30 at the first end 10.

The bent portion 42 is connected between the first connection portion 41 and the first lead-out portion 43, and the bent portion 42 is bent and extended along a spacing region between the plurality of explosion-proof valves 34, so that the explosion-proof valves 34 of two adjacent battery cells 30 are located on different sides of the bent portion 42, thereby avoiding the plurality of explosion-proof valves 34. The kink portion 42 may include a plurality of concave portions 421 and a plurality of convex portions 422, and adjacent two concave portions 421 are connected by one convex portion 422. Each recess 421 encloses a first area 4211, and the first area 4211 is used for accommodating an explosion-proof valve 34. Each protrusion 422 encloses a second area 4221, and the second area 4221 is used for accommodating an explosion-proof valve 34. The first connecting portion 41 and the bent portion 42 cooperatively define a third area 4212, the third area 4212 is used for accommodating an explosion-proof valve 34, the first leading portion 43 and the bent portion 42 cooperatively define a fourth area 4222, and the fourth area 4222 is used for accommodating an explosion-proof valve 34. That is, each of the first zone 4211, the second zone 4221, the third zone 4212 and the fourth zone 4222 can accommodate one explosion-proof valve 34, such that the plurality of explosion-proof valves 34 are located in the area encircled by the first lead-out tab 40.

One end of the first lead portion 43, which is away from the bent portion 42, extends from the battery cell 30 at the second end 20, and the first lead portion 43 can lead the positive electrode current or the negative electrode current transmitted by the first connection portion 41 to itself through the bent portion 42. The first lead-out portion 43 is provided with a second connection hole 431, and the second connection hole 431 is used to connect with other battery modules. Illustratively, the first connection hole 411 is connected to the positive post 32 of the battery cell 30 at the first end 10, the bent portion 42 extends along a spacing region between the explosion-proof valves 34, and the bent portion 42 leads the positive current transferred by the first connection portion 41 to the first lead portion 43. So that the positive electrode of the first end 10 battery cell 30 is switched to the second end 20 and connected with other battery modules or devices through the second connection hole 431 arranged on the first lead-out part 43.

Based on the above description, it should be understood that by providing the first lead-out piece 40 and making the first lead-out piece 40 include the first connection part 41, the bent part 42 and the first lead-out part 43. On the other hand, the concave portions 421 and the convex portions 422 of the folded portion 42 are regularly and alternately connected in the interval region between the explosion-proof valves 34, so that the interval space between the explosion-proof valves 34 can be sufficiently utilized and the explosion-proof valves 34 can be effectively avoided. On the other hand, the first connecting portion 41 is connected to the positive post 32 or the negative post 33 of the battery cell 30 at the first end 10, and the positive electrode or the negative electrode of the first end 10 is connected to the second end 20 through the bending portion 42 and the first leading-out portion 43, so that the connection of the electrodes can be realized, and the leading-out of the positive electrode and the negative electrode of the battery module 100 from the same side can be further realized.

In a possible implementation manner, please refer to fig. 9, and fig. 9 is another structural schematic diagram of the first tab 40 shown in fig. 3. The first lead tab 40 may also include a landing 44. One end of the bridging portion 44 is provided with a third connection hole 441, the third connection hole 441 is used for connection with the positive pole 32 or the negative pole 33 of the battery cell 30 of the first end 10, and the other end of the bridging portion 44, which is not provided with the third connection hole 441, is connected to the first connection portion 41 in a stacked manner. Illustratively, the third connection hole 441 is connected to the positive post 32 of the battery cell 30 at the first end 10, the other end of the overlapping portion 44, which is not provided with the third connection hole 441, is connected to the first connection portion 41 in a stacked manner, the positive electrode of the battery cell 30 at the first end 10 is connected to the second end 20 through the first connection portion 41, the bent portion 42 and the first lead-out portion 43, and is extended out of the battery cell 30 at the second end through one end of the first lead-out portion 43, which is away from the bent portion 42, and is connected to other battery modules or devices through the second connection hole 431.

Referring to fig. 3, the second lead-out piece 60 is disposed on the battery core 30 at the second end 20, and the polarity of the second lead-out piece 60 is opposite to the polarity of the first lead-out piece 40, so that the positive and negative poles of the battery module 100 are led out at the same side. Illustratively, the polarity of the second lead-out tab 60 may be positive or negative. When the polarity of the first lead-out piece 40 is positive, the polarity of the second lead-out piece 60 is negative. When the polarity of the first lead-out tab 40 is negative, the polarity of the second lead-out tab 60 is negative.

The second lead tab 60 may include a second connection portion 61 and a second lead portion 62. The second connection portion 61 is provided with a fourth connection hole 611, and the fourth connection hole 611 is connected to the positive electrode tab 32 or the negative electrode tab 33 of the battery cell 30 at the second end 20. One end of the second lead-out portion 62 is stacked on the second connection portion 61, one end of the second lead-out portion 62, which is away from the second connection portion 61, extends out of the battery cell 30 at the second end 20, and the second lead-out portion 62 and the first lead-out portion 43 are spaced in the second direction Y. The polarity of the second lead portion 62 is opposite to that of the first lead portion 43, that is, the polarity of the second lead tab 60 is opposite to that of the first lead tab 40. The second lead-out portion 62 is provided with a fifth connection hole 621, and the fifth connection hole 621 is used to connect with other battery modules.

In a specific application scenario, the first connection hole 411 of the first connection portion 41 is connected to the positive post 32 of the battery cell 30 of the first end 10, the positive electrode of the battery cell 30 of the first end 10 is switched to the battery cell 30 of the second end 20 through the first connection portion 41 and the bending portion 42, and one end of the first lead-out portion 43, which is far away from the bending portion 42, extends out of the battery cell of the second end 20. That is, the first lead portion 43 is a positive electrode of the battery module 100. The fourth connection hole 611 of the second connection portion 61 is connected to the negative pole column 33 of the battery core 30 of the second end 20, the negative pole of the battery core 30 of the second end 20 is led out through the second connection portion 61 and the second lead-out portion 62, that is, the second lead-out portion 62 is the negative pole of the battery module 100, so that the positive pole and the negative pole of the battery module 100 are led out from the same side of the battery core 30 of the second end 20, and are connected to other battery modules or devices through the second connection hole 431 and the fifth connection hole 621.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. The utility model provides a battery module, its characterized in that, battery module includes along the relative first end and the second end that sets up of first direction, battery module still includes:

the battery comprises a plurality of battery cells, a plurality of battery cells and a plurality of control units, wherein the battery cells are arranged along the first direction, each battery cell comprises a body, and a positive pole column, a negative pole column and an explosion-proof valve which are connected to the body;

the battery comprises a plurality of battery cell connecting sheets, wherein each battery cell connecting sheet is connected with a positive pole column and a negative pole column of two adjacent battery cells;

the first piece of drawing forth, it is a plurality of to draw forth the piece, it is a plurality of first drawing forth the piece is located interval region between the explosion-proof valve, it is a plurality of to draw forth the piece with a plurality of the electricity core connection piece is in all interval settings on the second direction, first drawing forth the piece certainly first end extends to the second end, so that adjacent two the explosion-proof valve is located the first difference side of drawing forth the piece, first drawing forth the piece be used for with the first end the positive post or the negative pole post of electricity core are drawn forth to the second end.

2. The battery module according to claim 1, wherein a plurality of the explosion-proof valves are arranged at intervals in the first direction, and two adjacent explosion-proof valves are arranged at intervals in the second direction.

3. The battery module according to claim 1 or 2, wherein the first lead tab comprises a first connection portion, a bent portion, and a first lead portion, the bent portion being connected between the first connection portion and the first lead portion;

the first connecting portion with the first end the positive post or the negative pole post of electric core are connected, the kink is in a plurality of interval region between the explosion-proof valve is buckled and is extended, first extraction portion is kept away from the one end of kink stretches out the second end the electric core.

4. The battery module according to claim 3, wherein the bent portion comprises a plurality of concave portions and a plurality of convex portions, two adjacent concave portions are connected by one convex portion, each concave portion encloses a first area, the first area is used for accommodating one explosion-proof valve, each convex portion encloses a second area, and the second area is used for accommodating one explosion-proof valve.

5. The battery module according to claim 3, wherein the first connecting portion and the bent portion cooperatively define a third region for accommodating the explosion-proof valve, and the first leading portion and the bent portion cooperatively define a fourth region for accommodating the explosion-proof valve.

6. The battery module according to claim 3, wherein the first lead-out sheet further comprises a lap joint portion, one end of the lap joint portion is connected to the positive pole or the negative pole of the battery cell at the first end, and the other end of the lap joint portion is stacked on the first connection portion.

7. The battery module of claim 3, further comprising a second lead-out piece connected to the cell at the second end, the second lead-out piece and the first lead-out piece being spaced apart in the second direction, and a polarity of the second lead-out piece being opposite to a polarity of the first lead-out piece.

8. The battery module according to claim 7, wherein the second lead-out piece includes a second connection portion and a second lead-out portion, the second connection portion is connected to the positive pole or the negative pole of the battery cell at the second end, one end of the second lead-out portion is stacked with the second connection portion, the other end of the second lead-out portion extends out of the battery cell at the second end, and the second lead-out portion and the first lead-out portion are spaced apart from each other in the second direction.

9. A battery pack comprising a case and a plurality of battery modules according to any one of claims 1 to 8, the battery modules being provided in the case.

10. A vehicle characterized by comprising a vehicle body and the battery pack according to claim 9, the battery pack being attached to the vehicle body.

Images