CN216288578U

CN216288578U - Battery cell module and battery pack

Info

Publication number: CN216288578U
Application number: CN202122794816.4U
Authority: CN
Inventors: 杨振宇; 张海建; 谭晶晶
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-12
Anticipated expiration: 2031-11-15

Abstract

The utility model provides a battery cell module and a battery pack, wherein the battery cell module comprises: a plurality of cell components arranged in a first predetermined direction; the battery cell components are provided with a first electrode end and a second electrode end which are arranged oppositely, and two battery cell polar columns of each battery cell component are respectively positioned at the first electrode end and the second electrode end; the battery cell components are provided with a first side face and a second side face which are arranged along a second preset direction, and the first preset direction is perpendicular to the second preset direction; and the first side surface and/or the second side surface are/is provided with cooling plates. The battery cell module provided by the utility model solves the problem of thermal runaway of a battery pack in the prior art.

Description

Battery cell module and battery pack

Technical Field

The utility model relates to the field of batteries, in particular to a battery cell module and a battery pack.

Background

The lithium ion power battery has the advantages of high voltage, high energy, small volume, light weight, wide working temperature range and the like, and the lithium ion battery pack is widely applied to various fields, particularly the field of electric vehicles.

With the development of new energy vehicles, the safety problem of a battery pack has become a focus of public attention, and how to solve the problem of thermal runaway of a battery core, a module and a whole pack level is urgent.

The existing battery pack scheme can not meet the standard and the requirement of thermal runaway without protection.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a battery cell module and a battery pack so as to solve the problem that the battery pack in the prior art is out of thermal control.

In order to achieve the above object, according to an aspect of the present invention, there is provided a cell module including: a plurality of cell components arranged in a first predetermined direction; the battery cell components are provided with a first electrode end and a second electrode end which are arranged oppositely, and two battery cell polar columns of each battery cell component are respectively positioned at the first electrode end and the second electrode end; the battery cell components are provided with a first side face and a second side face which are arranged along a second preset direction, and the first preset direction is perpendicular to the second preset direction; and the first side surface and/or the second side surface are/is provided with cooling plates.

Further, the battery cell module further comprises a battery cell explosion-proof valve, the battery cell explosion-proof valve is arranged on the first side face and/or the second side face, and a avoiding hole used for avoiding the battery cell explosion-proof valve is formed in the cooling plate.

Furthermore, the shape of the avoiding hole is the same as that of the battery cell explosion-proof valve, and the size of the avoiding hole is larger than or equal to that of the battery cell explosion-proof valve.

Furthermore, the avoidance holes are multiple, and the avoidance holes and the battery cell explosion-proof valves on the battery cell components are arranged in a one-to-one correspondence mode.

Further, each cooling plate comprises a first plate body portion and a second plate body portion which are arranged oppositely, and the avoiding holes penetrate through the first plate body portion and the second plate body portion.

Further, the first plate body portion is provided with a first concave portion which is concave towards the direction close to the second plate body portion, the first concave portion extends along a first preset direction, the first concave portion is used for being connected with the second plate body portion, and the avoiding hole is formed in the bottom wall of the first concave portion.

Furthermore, a plurality of second concave parts are arranged on the first plate body part, the second concave parts are respectively positioned on two opposite sides of the first concave part, and each second concave part is respectively concave towards the direction close to the second plate body part so as to be connected with the second plate body part.

Further, the interval region between the first plate body portion and the second plate body portion forms an interval flow passage through which the cooling liquid flows.

Further, a protruding area is arranged on the first plate body portion, the protruding area is formed by the fact that the first plate body portion is recessed towards the direction far away from the second plate body portion towards the surface of the second plate body portion, and the first recessed portion and the second recessed portion are arranged on the protruding area.

According to another aspect of the present invention, a battery pack is provided, which includes a battery cell module, where the battery cell module is the battery cell module described above.

By applying the technical scheme, the battery cell module provided by the utility model comprises a plurality of battery cell components and a cooling plate, wherein the battery cell components are arranged along a first preset direction, the battery cell components are respectively provided with a first electrode end and a second electrode end which are oppositely arranged, and two battery cell pole columns of each battery cell component are respectively positioned at the first electrode end and the second electrode end; the battery cell components are provided with a first side face and a second side face which are arranged along a second preset direction, and the first preset direction is perpendicular to the second preset direction; wherein the first side and/or the second side is provided with a cooling plate. When electric core emergence thermal runaway, this application sets up the cooling plate through first side and/or second side at electric core part, because sheltering from of cooling plate, other electric cores and module can not influenced by electric core part's injection thing, simultaneously, when electric core system is comparatively unstable, after the water-cooling was opened to the cooling plate, cooled off electric core part, can effectively restrain electric core part's thermal runaway from this.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic overall structural diagram of an embodiment of a cell module according to the present invention;

fig. 2 shows an enlarged schematic view of the region a of the cell module according to fig. 1;

fig. 3 shows a first plan view of the cell module according to fig. 1;

fig. 4 shows a second plan view of the cell module according to fig. 1;

fig. 5 shows a schematic arrangement of the explosion-proof valves of the cell components of an embodiment of the cell module according to the utility model;

fig. 6 shows a first schematic plan view of the cell module according to fig. 5;

fig. 7 shows a second schematic plan view of the cell module according to fig. 5;

fig. 8 shows a third schematic plan view of the cell module according to fig. 5;

fig. 9 shows a fourth schematic plan view of the cell module according to fig. 5;

fig. 10 shows a schematic structural diagram of a cell component of a cell module according to the present invention;

fig. 11 shows a first schematic plan view of the cell components according to fig. 10; and

fig. 12 shows a second plan view of the cell components according to fig. 10.

Wherein the figures include the following reference numerals:

10. a cell component; 100. a battery cell pole column; 11. a first electrode terminal; 12. a second electrode terminal; 20. a cooling plate; 21. a first plate body portion; 22. a second plate body portion; 30. a battery cell explosion-proof valve; 200. avoiding holes; 201. a first recess; 202. a second recess; 210. a separation flow channel; 220. an annular flow passage.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 12, the present invention provides a battery cell module, including: a plurality of cell components 10, the plurality of cell components 10 being arranged in a first predetermined direction; the plurality of cell components 10 have a first electrode end 11 and a second electrode end 12 which are oppositely arranged, and two cell poles 100 of each cell component 10 are respectively located at the first electrode end 11 and the second electrode end 12; the plurality of cell components 10 have first and second sides arranged in a second predetermined direction, the first predetermined direction being set perpendicular to the second predetermined direction; the cooling plate 20, the first side and/or the second side is provided with a cooling plate 20.

The battery cell module provided by the utility model comprises a plurality of battery cell components 10 and a cooling plate 20, wherein the battery cell components 10 are arranged along a first preset direction, the battery cell components 10 are respectively provided with a first electrode end 11 and a second electrode end 12 which are oppositely arranged, and two battery cell poles 100 of each battery cell component 10 are respectively positioned at the first electrode end 11 and the second electrode end 12; the plurality of cell components 10 have first and second sides arranged in a second predetermined direction, the first predetermined direction being set perpendicular to the second predetermined direction; wherein the first side and/or the second side is provided with a cooling plate 20. When electric core emergence thermal runaway, this application sets up cooling plate 20 through first side and/or second side at electric core part 10, because sheltering from of cooling plate 20, other electric cores and modules can not influenced by electric core part 10's injection thing, simultaneously, when electric core system is comparatively unstable, after cooling plate 20 opened the water-cooling, cooled off electric core part 10, can effectively restrain electric core part 10's thermal runaway from this.

In the embodiment of the present application, each of the cell components 10 is rectangular, and in the cell module, the extending direction, the first predetermined direction, and the second predetermined direction of the cell component 10 are all perpendicular to each other.

The first predetermined direction is a width direction of the cell component 10, and the second predetermined direction is a height direction of the cell component 10.

Specifically, as shown in fig. 5 and fig. 10, the battery cell module further includes a battery cell explosion-proof valve 30, the first side surface and/or the second side surface are provided with the battery cell explosion-proof valve 30, the cooling plate 20 is provided with an avoidance hole 200 for avoiding the battery cell explosion-proof valve 30, and the first electrode end 11 and the second electrode end 12 are disposed on two end surfaces of the battery cell component 10, and the first electrode end 11 and the second electrode end 12 are disposed at an interval along the extending direction of the battery cell component 10, so that when the battery cell component 10 is out of control due to heat, the jet of the battery cell component is not likely to affect the battery cell pole 100.

Optionally, a cell explosion-proof valve 30 is disposed on the first side surface of the cell component 10, or a cell explosion-proof valve 30 is disposed on the second side surface of the cell component 10, or both the first side surface and the second side surface of the cell component 10 are provided with the cell explosion-proof valves 30.

Optionally, the first side surface of the cell component 10 is provided with a cooling plate 20, or the second side surface of the cell component 10 is provided with a cooling plate 20, or both the first side surface and the second side surface are provided with cooling plates 20.

Specifically, the shape of the avoidance hole 200 is the same as that of the cell explosion-proof valve 30, and the size of the avoidance hole 200 is greater than or equal to that of the cell explosion-proof valve 30, so that the cooling plate 20 avoids the cell explosion-proof valve 30.

Preferably, the size of the avoiding hole 200 is equal to that of the cell explosion-proof valve 30, so that the cooling plate 20 shields the cell component 10, thereby preventing the cell spray from affecting other cells or modules.

Specifically, the avoidance holes 200 are plural, and the plural avoidance holes 200 are provided in one-to-one correspondence with the cell explosion-proof valves 30 on the plural cell components 10.

In the embodiment of the present application, as shown in fig. 1 and 2, the cooling plates 20 are rectangular in shape, each cooling plate 20 includes a first plate body portion 21 and a second plate body portion 22 which are oppositely disposed, and the avoidance hole 200 penetrates through the first plate body portion 21 and the second plate body portion 22.

Specifically, as shown in fig. 1, 2 and 8, the first plate body portion 21 has a first recess 201 recessed toward a direction close to the second plate body portion 22, the first recess 201 extends in a first predetermined direction, the first recess 201 is used for connecting with the second plate body portion 22, and the relief hole 200 is provided on a bottom wall of the first recess 201.

Further, the first plate body portion 21 is provided with a plurality of second recessed portions 202, the plurality of second recessed portions 202 are respectively located at two opposite sides of the first recessed portion 201, and each of the second recessed portions 202 is recessed toward a direction close to the second plate body portion 22 for connection with the second plate body portion 22.

In the embodiment of the present invention, the area of the first recess 201 is larger than that of the second recess 202, so that the first recess 201 is adapted to the size of the avoidance hole 200.

Wherein the first recess 201 and the second recess 202 are both used for brazing so that the first plate body portion 21 is welded with the second plate body portion 22 through the first recess 201 and the second recess 202.

Specifically, the spaced area between the first plate body portion 21 and the second plate body portion 22 forms a spaced flow passage 210 through which the cooling liquid flows, the spaced flow passage 210 extending in the first predetermined direction.

Specifically, the plurality of separation flow channels 210 are provided, and the plurality of separation flow channels 210 are arranged in parallel, and preferably, the plurality of separation flow channels 210 are arranged at intervals along the extending direction of the cell component 10.

The first plate body portion 21 is provided with a convex region, the convex region is formed by the first plate body portion 21 being concave toward the plate surface of the second plate body portion 22 toward the direction away from the second plate body portion 22, and the first concave portion 201 and the second concave portion 202 are both provided on the convex region. The protruding regions serve to form the partition flow passage 210 and the annular flow passage 220 around the outer circumference of the partition flow passage 210.

The utility model further provides a battery pack which comprises the battery cell module, and the battery cell module is the battery cell module.

Preferably, as shown in fig. 1, the first side and the second side are provided with cooling plates 20, so that when the cell module structure is provided with a thermal management scheme, after water cooling is started, the first side and the second side of the cell component 10 start to be cooled or heated simultaneously, so that the whole package thermal performance of the cell module can be improved.

Preferably, the outer circumferential surface of the cooling plate 20 protrudes beyond the outer circumferential surface of the plurality of cell components 10, such that the annular flow channel 220 is completely disposed on the first side surface and/or the second side surface of the plurality of cell components 10, so as to maximize the cooling effect.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery cell module which characterized in that includes:

a plurality of cell components (10), the plurality of cell components (10) being arranged in a first predetermined direction; the battery cell components (10) are respectively provided with a first electrode end (11) and a second electrode end (12) which are arranged oppositely, and two battery cell poles (100) of each battery cell component (10) are respectively positioned at the first electrode end (11) and the second electrode end (12); the plurality of cell components (10) are provided with a first side face and a second side face which are arranged along a second preset direction, and the first preset direction is perpendicular to the second preset direction;

a cooling plate (20), the first side and/or the second side being provided with the cooling plate (20).

2. The battery cell module of claim 1, further comprising a battery cell explosion-proof valve (30), wherein the battery cell explosion-proof valve (30) is disposed on the first side surface and/or the second side surface, and an avoidance hole (200) for avoiding the battery cell explosion-proof valve (30) is disposed on the cooling plate (20).

3. The cell module of claim 2, wherein the relief hole (200) has the same shape as the cell explosion-proof valve (30), and the size of the relief hole (200) is greater than or equal to the size of the cell explosion-proof valve (30).

4. The cell module of claim 2, wherein the number of the avoiding holes (200) is plural, and the plural avoiding holes (200) are provided in one-to-one correspondence with the cell explosion-proof valves (30) on the plural cell components (10).

5. The cell module according to claim 2, wherein each cooling plate (20) comprises a first plate body portion (21) and a second plate body portion (22) which are arranged oppositely, and the avoidance hole (200) penetrates through the first plate body portion (21) and the second plate body portion (22).

6. The cell module according to claim 5, wherein the first plate body portion (21) has a first recess (201) that is recessed toward a direction close to the second plate body portion (22), the first recess (201) extends along the first predetermined direction, the first recess (201) is used for connecting with the second plate body portion (22), and the relief hole (200) is provided on a bottom wall of the first recess (201).

7. The cell module according to claim 6, wherein the first plate body portion (21) is provided with a plurality of second recessed portions (202), the plurality of second recessed portions (202) are respectively located at two opposite sides of the first recessed portion (201), and each second recessed portion (202) is recessed toward a direction close to the second plate body portion (22) for connecting with the second plate body portion (22).

8. The cell module according to claim 5, wherein a separation area between the first plate body portion (21) and the second plate body portion (22) forms a separation flow channel (210) for a cooling fluid to flow through.

9. The cell module according to claim 7, wherein the first plate body portion (21) is provided with a raised area, the raised area is formed by the first plate body portion (21) being recessed towards the plate surface of the second plate body portion (22) towards a direction away from the second plate body portion (22), and the first recessed portion (201) and the second recessed portion (202) are both provided on the raised area.

10. A battery pack comprising a cell module, wherein the cell module is in any one of claims 1 to 9.