CN216085019U

CN216085019U - Battery module and battery pack

Info

Publication number: CN216085019U
Application number: CN202121295718.XU
Authority: CN
Inventors: 谢泉龙; 綦槐松
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-03-18
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a battery module and a battery pack, and belongs to the technical field of power batteries. The battery module comprises a plurality of battery cell stacking bodies, each battery cell stacking body comprises a plurality of battery cells which are stacked, the battery module further comprises a liquid cooling plate, a plurality of partition plates and a cover plate assembly, and the liquid cooling plate is communicated with an external liquid cooling device; the plurality of partition plates are arranged between the liquid cooling plates at intervals, two adjacent partition plates and the liquid cooling plates form a containing groove for containing the battery cell stacking body, and the partition plates are communicated with the liquid cooling plates and used for cooling the battery cell stacking body; the cover plate assembly is fixedly arranged on the liquid cooling plate and covers the battery cell stacking body. The battery pack comprises the battery module. According to the battery module and the battery pack, the heat dissipation effect of the battery core is improved, the size of the whole space is fully utilized, the arrangement number of the battery cores is increased, and the endurance time of the battery pack is further increased; through the flexible design of battery module, manufacturing cost has been reduced.

Description

Battery module and battery pack

Technical Field

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

Background

Along with battery module size increase, the temperature through the central point of bottom heat dissipation module obviously is higher than all around and bottom, can't solve the heat collecting effect of inside electric core for electric core environment is abominable, causes the inefficacy in advance easily.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a battery module, which can improve heat dissipation, prolong the service life of the battery module, and improve safety.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a battery module, includes a plurality of electric core stack bodies, electric core stack body is including a plurality of electric cores of piling up the setting, the battery module still includes:

the liquid cooling plate is communicated with the external liquid cooling device;

the plurality of partition plates are arranged between the liquid cooling plates at intervals, two adjacent partition plates and the liquid cooling plates form a containing groove for containing the battery cell stacking body, and the partition plates are communicated with the liquid cooling plates and used for cooling the battery cell stacking body;

the cover plate assembly is fixedly arranged on the liquid cooling plate and covers the battery cell stacking body.

Optionally, the partition is removably attached to the liquid cooled panel.

Optionally, one end of the liquid cooling plate is provided with a water inlet and a water outlet for communicating with the external liquid cooling device;

the liquid cooling plate comprises a plurality of component plates, the component plates are communicated with the water inlet and the water outlet, the component plates are arranged in a one-to-one correspondence mode with the partition plates, and the partition plates are communicated with the corresponding component plates.

Optionally, it is a plurality of the storage tank sets up along the first direction, the storage tank is equipped with the support along the both ends of second direction, the utmost point ear orientation of electric core pile body the support setting, and with the connection can be dismantled to the support, the second direction perpendicular to the first direction.

Optionally, the number of the supports is multiple, the plurality of supports are divided into two rows, the first row of the supports and the second row of the supports are arranged oppositely along the second direction, the same row of the supports are arranged along the first direction, the plurality of supports are arranged corresponding to the tabs, the supports are provided with limit grooves, and the tabs are inserted into the limit grooves.

Optionally, the cover plate assembly comprises:

the upper cover is fixedly arranged on the liquid cooling plate;

the two end plates are arranged at the two ends of the accommodating groove in the second direction, the support is arranged between the two end plates, and the end plates and the support are fixedly arranged.

Optionally, the upper cover comprises:

the cover body is arranged in parallel with the liquid cooling plate at intervals;

two side plates arranged at two sides of the cover body;

and the two bending parts are respectively connected to the two side plates, the bending parts and the cover body are oppositely arranged, and the bending parts and the liquid cooling plate are connected in a welded mode.

Optionally, two adjacent brackets in the same row are detachably connected, and the brackets are detachably connected with the end plate.

Optionally, the liquid cooling plate is provided with an external module mounting hole formed in the cover plate assembly, and the liquid cooling plate is connected with an external structure through a fastener and the module mounting hole.

Another object of the present invention is to provide a battery pack, which can improve the heat dissipation effect and prolong the service life of the battery pack.

a battery pack comprises the battery module.

The utility model has the beneficial effects that:

according to the battery module, the three surfaces of the battery cell stacking body can be simultaneously cooled through the accommodating groove formed by the liquid cooling plate and the partition plate, so that the cooling area is greatly increased, and the heat collection effect is effectively solved; and the temperature of each battery core of the module is balanced, so that the service life of the whole battery module is prolonged, and the use safety is improved. In addition, in the battery module, the separator also reinforces the structural strength of the battery module.

The number of the battery cell stacking bodies and the partition plates and the material sizes of the corresponding liquid cooling plates and the corresponding cover plate assemblies are adjusted, so that the battery pack flexible assembly can meet the requirements of various battery packs and the electric quantity and space of the whole vehicle, the flexible design requirement is met, the whole module is simple in design structure, the manufacturing process flow is short, production can be carried out after the tool is replaced on the same production line, and the production cost can be greatly reduced; the number of the single battery cell stacking bodies is correspondingly increased or reduced according to actual conditions, the whole vehicle space can be fully utilized, the arrangement number of the battery cells is increased, the charge quantity of the battery module is increased, and the endurance time is prolonged; and meanwhile, the number of the battery cells on the battery cell stacking body can be adjusted, so that the space of the whole vehicle is further fully utilized.

According to the battery pack provided by the utility model, by adopting the battery module, the heat dissipation effect of the battery core is improved, and the service life and the use safety of the battery pack are further improved; the size of the whole space is fully utilized, the arrangement number of the battery cores is increased, and the endurance time of the battery pack is further increased; through the flexible design of battery module, reduced the manufacturing cost of battery package.

Drawings

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 2 is an enlarged view of fig. 1 at a.

In the figure:

100. a cell stack body; 101. an electric core; 1011. a tab;

1. a liquid-cooled plate; 11. a liquid inlet; 12. a liquid outlet; 13. a water inlet; 14. a water outlet; 15. a module mounting hole;

2. a cover plate assembly; 21. an upper cover; 211. a cover body; 212. a side plate; 2121. a bending section; 22. an end plate; 221. a card slot;

3. a partition plate;

4. a support; 41. a limiting groove; 42. and (5) buckling.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment provides a battery module, as shown in fig. 1, the battery module includes a plurality of battery cell stacked bodies 100, each battery cell stacked body 100 includes a plurality of battery cells 101 stacked in a stacked manner, and the battery module further includes a liquid cooling plate 1, a cover plate assembly 2, and a plurality of separators 3; specifically, the liquid cooling plate 1 is communicated with an external liquid cooling device; each partition plate 3 is arranged between the liquid cooling plates 1 at intervals, an accommodating groove for accommodating the battery cell stacking body 100 is formed by the adjacent two partition plates 3 and the liquid cooling plates 1, and the partition plates 3 are communicated with the liquid cooling plates 1 and used for cooling the battery cell stacking body 100; the cover plate assembly 2 is fixedly arranged on the liquid cooling plate 1 and covers the battery cell stacking body 100.

Through the accommodating groove formed by the liquid cooling plate 1 and the partition plate 3, three surfaces of the battery cell stacking body 100 can be simultaneously cooled, the cooling area is greatly increased, and the heat collection effect is effectively solved; and the temperature of each electric core 101 of the module is balanced, so that the service life of the whole battery module is prolonged, and the use safety is improved. In addition, in the battery module, the separator 3 also reinforces the structural strength of the battery module.

The number of the battery cell stacking bodies 100 and the partition plates 3 and the material sizes of the corresponding liquid cooling plates 1 and the corresponding cover plate assemblies 2 are adjusted, so that the battery module can meet the requirements of various battery packs, the electric quantity and the space of the whole vehicle, the flexible design requirement is met, the whole module is simple in design structure, the manufacturing process flow is short, the production can be carried out after the tool is replaced on the same production line, and the production cost is greatly reduced; the number of the single battery cell stacking bodies 100 is correspondingly increased or reduced according to actual conditions, so that the whole vehicle space can be fully utilized, the arrangement number of the battery cells 101 is increased, the charge quantity of the battery module is increased, and the endurance time is prolonged; meanwhile, the number of the electric cores 101 on the electric core stacking body 100 can be adjusted, so that the space of the whole vehicle is further fully utilized. The battery module in the present embodiment is also applicable to the CTP scheme.

Specifically, the partition plates 3 are arranged in parallel, and the partition plates 3 are arranged perpendicular to the end plates 22, so that the appearance is good, and the design and the assembly are convenient; specifically, the separation distance between each separator 3 is the same, and the number of the battery cells 101 included in the battery cell stack body 100 is the same, thereby improving the temperature balance of each battery cell stack body 100.

Optionally, as shown in fig. 1, one end of the liquid cooling plate 1 is provided with a water inlet 13 and a water outlet 14, which are communicated with an external liquid cooling device, so that the liquid cooling plate 1 performs a cooling cycle, specifically, the liquid cooling plate 1 is communicated with the liquid cooling management of the battery pack to form a liquid cooling system of the battery pack, and further, the battery pack performs effective temperature management on the battery module; specifically, the water inlet 13 and the water outlet 14 are arranged outside the cover plate assembly 2, and installation and adjustment are convenient. Optionally, the partition plate 3 is detachably connected with the liquid cooling plate 1, so that the partition plate 3 and the liquid cooling plate 1 can be conveniently processed and disassembled respectively.

In this embodiment, as shown in fig. 1, the liquid cooling plate 1 includes a plurality of component plates, and the plurality of component plates are all communicated with the water inlet 13 and the water outlet 14, so that each component plate performs cooling circulation; the partition plate 3 is communicated with the corresponding branch plates, specifically, each branch plate is respectively provided with a liquid inlet 11 and a liquid outlet 12, the partition plate 3 is provided with an inlet and an outlet, the inlet is communicated with the liquid outlet 12, and the outlet is communicated with the liquid inlet 11, so that the partition plate 3 is communicated with the branch plates, and the partition plate 3 is cooled and circulated; further specifically, install the joint on inlet 11 and the liquid outlet 12, baffle 3 can dismantle through the joint and connect on liquid cold drawing 1, makes things convenient for the dismouting.

Optionally, as shown in fig. 1, each separator 3 is disposed along the first direction at an even interval, so that a plurality of accommodating grooves are disposed along the first direction, during installation, the stacking direction of the battery cell stacking body 100 is the first direction, the accommodating grooves are provided with the supports 4 along the two ends of the second direction, the tabs 1011 of the battery cell stacking body 100 are disposed toward the supports 4 and detachably connected to the supports 4, the second direction is perpendicular to the first direction, the supports 4 are used for structurally supporting the tabs 1011, so that the installation is stable, and meanwhile, the supports 4 can also protect the tabs 1011. In the embodiment, the number of the supports is multiple, the plurality of supports 4 are divided into two rows, the first row of supports 4 and the second row of supports 4 are oppositely arranged along the second direction, the plurality of supports 4 in the same row are arranged along the first direction, and the plurality of supports 4 are arranged corresponding to the lugs, so that the supports 4 are prevented from being overlong in structure and are convenient to process; specifically, the support 4 is provided with a limiting groove 41, and the tab 1011 is inserted into the limiting groove 41, so that the assembly and disassembly are convenient. In this embodiment, the battery cell stack body 100 is stacked along the thickness direction of the battery cell 101, where the first direction is an x direction, the second direction is a y direction, and the third direction is a z direction.

Optionally, as shown in fig. 1, the cover plate assembly 2 includes an upper cover 21 and two end plates 22, where the upper cover 21 is fixedly disposed on the liquid cooling plate 1, and the upper cover 21 is used to protect the cell stack 100; further optionally, the upper cover 21 includes a cover body 211, two side plates 212, and two bending portions 2121, where the cover body 211 and the liquid cooling plate 1 are arranged in parallel at an interval, and are used to protect one side of the battery cell 101 away from the liquid cooling plate 1, and specifically, the cover body 211 and the liquid cooling plate 1 are arranged at an interval in a third direction; two side plates 212 are provided on both sides of the cover body 211 in the first direction; specifically, two bending portions 2121 are connected to the two side plates 212, respectively, the bending portions are disposed opposite to the cover body 211, and the bending portions 2121 are welded to the liquid cooling plate 1, so that the upper cover 21 and the liquid cooling plate 1 form a whole, the structural strength of the battery module is enhanced, and the battery cell stacked body 100 is protected. The two end plates 22 are arranged at two ends of the accommodating groove along the second direction, the support 4 is arranged between the two end plates 22, the end plates 22 and the support 4 are fixedly arranged, and the end plates 22 can protect the support 4; specifically, the end plate 22 may be fixedly connected to the liquid cooling plate 1, or may be fixedly connected to the upper cover 21, and the connection manner may be selected from welding, connection by a fastener, and is not limited.

Optionally, two adjacent brackets 4 in the same row are detachably connected, and the brackets 4 are detachably connected with the end plate 22, so that the brackets 4 and the brackets 4, and the brackets 4 and the end plate 22 are conveniently detached; more specifically, as shown in fig. 2, one end of each bracket 4 is provided with a buckle 42, the other end of each bracket 4 is provided with a clamping groove 221, and the buckle 42 of one bracket 4 is clamped with the clamping groove 221 of the other bracket 4; specifically, one end of the end plate 22 is provided with a buckle 42, the other end is provided with a clamping groove 221, the buckle 42 at one end of the end plate 22 is clamped with the clamping groove 221 at one end of the bracket 4, and the clamping groove 221 at the other end of the end plate 22 is clamped with the buckle 42 at the other end of the bracket 4; specifically, be provided with two jack catchs on the buckle 42, be provided with two bayonets on the draw-in groove 221, two jack catchs block into two buckles 42 respectively in order to realize the joint, and this mounting means connects simply, and the installation is convenient, and is quick detachable, and maneuverability is high.

Optionally, as shown in fig. 1, a module mounting hole 15 connected to an external structure is formed in the liquid cooling plate 1, the module mounting hole 15 is formed outside the cover plate assembly 2, and the liquid cooling plate 1 is mounted on a battery pack or other external structural members through a fastener and the module mounting hole 15, so that the battery module is fixed.

The embodiment also provides a battery pack, which comprises the battery module, so that the heat dissipation effect of the battery core 101 is improved, and the service life and the use safety of the battery pack are further improved; the size of the whole space is fully utilized, the arrangement number of the battery cells 101 is increased, and the endurance time of the battery pack is further increased; through the flexible design of battery module, reduced the manufacturing cost of battery package.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery module, includes a plurality of electric core stack body (100), electric core stack body (100) is including a plurality of electric cores (101) of piling up the setting, its characterized in that, the battery module still includes:

the liquid cooling plate (1) is communicated with an external liquid cooling device;

the plurality of partition plates (3) are arranged between the liquid cooling plates (1) at intervals, a containing groove for containing the battery cell stacked body (100) is formed between every two adjacent partition plates (3) and the liquid cooling plates (1), and the partition plates (3) are communicated with the liquid cooling plates (1) and used for cooling the battery cell stacked body (100);

and the cover plate assembly (2) is fixedly arranged on the liquid cooling plate (1) and covers the battery cell stacking body (100).

2. The battery module according to claim 1, wherein the separator (3) is detachably attached to the liquid-cooled plate (1).

3. The battery module according to claim 2,

one end of the liquid cooling plate (1) is provided with a water inlet (13) and a water outlet (14) which are used for being communicated with the external liquid cooling device;

the liquid cooling plate (1) comprises a plurality of component plates, the component plates are communicated with the water inlet (13) and the water outlet (14), the component plates are arranged in a one-to-one correspondence mode with the partition plates (3), and the partition plates (3) are communicated with the corresponding component plates.

4. The battery module according to claim 1, wherein the plurality of receiving grooves are arranged along a first direction, supports (4) are arranged at two ends of each receiving groove along a second direction, tabs (1011) of the cell stack body (100) are arranged towards the supports (4) and detachably connected with the supports (4), and the second direction is perpendicular to the first direction.

5. The battery module according to claim 4, wherein the number of the brackets is plural, the plural brackets (4) are divided into two rows, the first row of the brackets (4) and the second row of the brackets (4) are oppositely arranged along the second direction, the plural brackets (4) in the same row are arranged along the first direction, the plural brackets (4) are arranged corresponding to the tab, the bracket (4) is provided with a limit groove (41), and the tab (1011) is inserted into the limit groove (41).

6. The battery module according to claim 5, wherein the cap plate assembly (2) comprises:

the upper cover (21) is fixedly arranged on the liquid cooling plate (1);

two end plates (22) are arranged at two ends of the accommodating groove in the second direction, the support (4) is arranged between the two end plates, and the end plates (22) and the support (4) are fixedly arranged.

7. The battery module according to claim 6, wherein the upper cover (21) comprises:

the cover body (211) is arranged in parallel with the liquid cooling plate (1) at intervals;

two side plates (212) provided on both sides of the cover body (211);

the two bent parts (2121) are respectively connected to the two side plates (212), the bent parts are arranged opposite to the cover body (211), and the bent parts (2121) are connected with the liquid cooling plate (1) in a welding mode.

8. The battery module according to claim 6, wherein two adjacent brackets (4) in the same row are detachably connected, and the brackets (4) are detachably connected to the end plates (22).

9. The battery module according to any one of claims 1 to 3, wherein the liquid cooling plate (1) is provided with an external module mounting hole (15) formed in the cover plate assembly (2), and the liquid cooling plate (1) is connected with an external structure through a fastener and the module mounting hole (15).

10. A battery pack comprising the battery module according to any one of claims 1 to 9.