CN219350382U

CN219350382U - Battery pack and vehicle

Info

Publication number: CN219350382U
Application number: CN202320234449.9U
Authority: CN
Inventors: 梁绍泽; 陈伟东; 陈小源; 王辉煌; 王华文; 代志华; 王英中; 王慧敏; 罗培文
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-07-14
Anticipated expiration: 2033-02-01

Abstract

The utility model discloses a battery pack and discloses a vehicle with a battery plate, wherein the battery pack comprises a box body assembly, a battery cell group, a heat conducting piece and a liquid cooling plate, the box body assembly comprises a frame and a bottom guard plate, the bottom guard plate is detachably connected with the frame, a containing cavity is formed by enclosing the bottom guard plate and the frame, the battery cell group is contained in the containing cavity, the heat conducting piece is arranged on one side of the battery cell group and is positioned between the battery cell group and the bottom guard plate, the liquid cooling plate is detachably connected with one side, away from the battery cell group, of the heat conducting piece, the liquid cooling plate and the bottom guard plate are sequentially stacked, when the liquid cooling plate is opened, a maintainer can detach the bottom guard plate from the heat conducting piece, without detaching the battery cell group, and can independently replace the bottom guard plate and the liquid cooling plate, so that the maintenance cost of the battery pack can be reduced.

Description

Battery pack and vehicle

Technical Field

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

Background

The battery pack of the new energy automobile is mainly fixed on an automobile chassis, the probability that the bottom of the battery pack is hit by stone and knocked with the bottom is very high in the running process of the automobile, and serious stone hit or knocked with the bottom leads to bottom guard plates and liquid cooling plates of the battery pack to open holes, so that the tightness of the battery pack is reduced, a liquid cooling loop is damaged, and the inside of a battery cell is corroded and damaged by water inflow. The existing battery pack is characterized in that the battery core and the liquid cooling plate are bonded and fixed through glue, the liquid cooling plate cannot be maintained in a nondestructive mode, the battery pack with holes at the bottom can only be scrapped, the cost of the battery pack is high, and the maintenance cost of the battery pack is high.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery pack, which can reduce the maintenance cost of the battery pack.

The utility model further provides a vehicle with the battery pack.

According to the battery pack, the battery pack comprises a box assembly, a battery cell group, a heat conducting piece and a liquid cooling plate, wherein the box assembly comprises a frame and a bottom guard plate, the bottom guard plate is detachably connected with the frame, a containing cavity is formed by enclosing the bottom guard plate and the frame, the battery cell group is contained in the containing cavity, the heat conducting piece is arranged on one side of the battery cell group and between the battery cell group and the bottom guard plate, the liquid cooling plate is connected with one side, away from the battery cell group, of the heat conducting piece, and the liquid cooling plate is detachably connected with the heat conducting piece, and/or the heat conducting piece is detachably connected with the battery cell group.

The battery pack according to the embodiment of the first aspect of the present utility model has at least the following advantageous effects:

the battery cell group, the heat conducting fin, the liquid cooling plate and the bottom guard plate are sequentially stacked, when the liquid cooling plate is provided with holes, maintenance personnel can detach the liquid cooling plate from the heat conducting piece through detaching the bottom guard plate, the battery cell group is not required to be detached, the bottom guard plate and the liquid cooling plate can be independently replaced, and the maintenance cost of the battery pack can be reduced.

According to some embodiments of the present utility model, the box assembly further includes N partition assemblies disposed at intervals side by side, the N partition assemblies partition the accommodating cavity into (n+1) accommodating spaces, the battery cell groups are correspondingly configured with (n+1) groups, the battery cell groups are accommodated in the corresponding accommodating spaces, the partition assemblies are provided with limiting structures, the limiting structures are abutted to one sides, away from the bottom guard plate, of the battery cell groups, and N is a positive integer.

According to some embodiments of the utility model, the box assembly further comprises a separation assembly, the separation assembly comprises a separation piece and a fixing piece, the separation piece is clamped between two adjacent battery cell groups, one side of the separation piece is connected with the bottom guard plate, one side of the separation piece, which is far away from the bottom guard plate, is connected with the fixing piece, and the fixing piece is abutted with one side, which is far away from the bottom guard plate, of the battery cell group.

According to some embodiments of the utility model, the fixing element comprises a connecting part, a first limiting part and a second limiting part, wherein the first limiting part and the second limiting part are respectively arranged at two opposite sides of the connecting part, the connecting part is connected with the separating element, one of two adjacent groups of electric core groups is connected with the first limiting part, and the other is connected with the second limiting part.

According to some embodiments of the present utility model, a first blocking strip is connected to a side wall of the accommodating cavity facing the separation component, the side wall of the accommodating cavity, the first blocking strip and the battery cell group are enclosed to form a first glue filling groove, one end of the first blocking strip facing the battery cell group is attached to the battery cell group, an adhesive is filled in the first glue filling groove, and the side wall of the accommodating cavity is adhered to the battery cell group through the adhesive.

According to some embodiments of the utility model, the box assembly further comprises a separator, the separator is clamped between two adjacent groups of the battery cell groups, the separator is connected with a second blocking strip, a second glue filling groove is formed by enclosing the separator, the second blocking strip and the battery cell groups, one end of the second blocking strip, which is far away from the separator, is attached to the battery cell groups, an adhesive is filled in the second glue filling groove, and the separator is adhered to the battery cell groups through the adhesive.

According to some embodiments of the utility model, a guide part is arranged at one end of the partition piece far away from the bottom guard plate, and the distance between the guide part and the battery cell group gradually decreases along the direction approaching to the bottom guard plate.

According to some embodiments of the utility model, opposite sides of the accommodating cavity are respectively provided with an avoidance groove, and the avoidance grooves are used for avoiding a clamp for clamping the battery cell group.

According to some embodiments of the utility model, the battery pack further comprises a thermal insulation member sandwiched between the bottom guard plate and the liquid cooling plate.

A vehicle according to an embodiment of a second aspect of the utility model, comprising a battery pack as described in the above embodiments, the tank assembly being connected to a chassis of the vehicle.

The vehicle according to the embodiment of the second aspect of the utility model has at least the following advantageous effects:

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

Drawings

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

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

fig. 2 is an exploded view of a battery pack according to an embodiment of the present utility model;

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

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion B of FIG. 4;

FIG. 6 is an enlarged view of a portion C of FIG. 4;

fig. 7 is a schematic structural view of a fixing member according to an embodiment of the present utility model.

Reference numerals:

the box assembly 100, the accommodating cavity 101, the avoiding groove 102, the frame 110, the bottom guard plate 120, the separation assembly 130, the separation piece 131, the guide part 1311, the fixing piece 132, the connecting part 1321, the first limiting part 1322, the second limiting part 1323, the second blocking strip 140, the second glue filling groove 150, the battery cell group 200, the heat conducting piece 300, the liquid cooling plate 400, the first blocking strip 500, the first glue filling groove 510 and the heat insulating piece 600.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, a battery pack according to an embodiment of the present utility model includes a case assembly 100, a battery cell group 200, a heat conducting member 300 and a liquid cooling plate 400, where the case assembly 100 includes a frame 110 and a bottom protecting plate 120, the bottom protecting plate 120 is detachably connected with the frame 110, the bottom protecting plate 120 and the frame 110 enclose to form a containing cavity 101, the battery cell group 200 is contained in the containing cavity 101, the heat conducting member 300 is disposed on one side of the battery cell group 200 and between the battery cell group 200 and the bottom protecting plate 120, and the liquid cooling plate 400 is detachably connected with one side of the heat conducting member 300 facing away from the battery cell group 200, so that a maintainer can replace the bottom protecting plate 120 and the liquid cooling plate 400 separately, and maintenance cost of the battery pack can be reduced.

Specifically, the electric core group 200, the heat conducting fin 300, the liquid cooling plate 400 and the bottom guard plate 120 are sequentially stacked, when the liquid cooling plate 400 is provided with holes, maintenance personnel can detach the bottom guard plate 120 from the heat conducting piece 300, and detach the liquid cooling plate 400 from the heat conducting piece 300 without detaching the electric core group 200, so that the bottom guard plate 120 and the liquid cooling plate 400 can be independently replaced, and the maintenance cost of the battery pack can be reduced.

It should be noted that, the heat conducting member 300 has no bonding capability, so that the liquid cooling plate 400 can be conveniently detached from the heat conducting member 300, and maintenance personnel can conveniently separate the liquid cooling plate 400.

It should be noted that, the maintenance personnel can also separate the liquid cooling plate 400 by separating the heat conducting member 300 from the battery cell group 200, so as to indirectly disassemble the liquid cooling plate 400, which is also convenient for the maintenance personnel to separate the liquid cooling plate 400.

It should be noted that the bottom guard 120 and the frame 110 are detachably connected by bolting or screwing, which is not limited herein. Of course, in some embodiments, the bottom guard 120 and the frame 110 may be detachably connected by a fastening structure, which is not limited herein.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the case assembly 100 further includes N partition assemblies 130 disposed at intervals side by side, the N partition assemblies 130 partition the accommodating cavity 101 into n+1 accommodating spaces, the battery cell groups 200 are correspondingly configured with n+1 groups, the battery cell groups 200 are accommodated in the corresponding accommodating spaces, the partition assemblies 130 are provided with a limiting structure, the limiting structure abuts against one side of the battery cell groups 200 away from the bottom guard plate 120, N is a positive integer, so that the partition assemblies 130 can partition the accommodating spaces of the accommodating cavity 101 disposed at intervals side by side to increase the capacity of the case assembly 100, and the limiting structure can limit the battery cell groups 200 to move along the direction of exiting the accommodating cavity 101 so as to assemble the battery pack.

Specifically, the one end of separating subassembly 130 is connected with the lateral wall that holds chamber 101, the other end of separating subassembly 130 is connected with the another relative lateral wall that holds chamber 101, N separation subassembly 130 interval sets up side by side, can separate holding chamber 101 for N+1 accommodation space, thereby can separate setting up N+1 group's electric core group 200, thereby reduce the heat transfer of electric core group 200 to adjacent electric core group 200, can improve the capacity of box subassembly 100, and limit structure and electric core group 200 keep away from the one side butt of backplate 120, can restrict electric core group 200 and remove along the direction that holds chamber 101 that moves, so that the equipment battery package.

It should be noted that, the limiting structure may be a structure such as a limiting protrusion or a limiting bar, and the limiting protrusion or the limiting bar may abut against a side of the battery cell group 200 away from the bottom guard plate 120, which is not limited herein.

N may be a positive integer such as 1, 2, 3, 4, or 5, and is not limited thereto.

Referring to fig. 3 and 4, in some embodiments of the present utility model, the case assembly 100 further includes a partition assembly 130, the partition assembly 130 includes a partition member 131 and a fixing member 132, the partition member 131 is interposed between two adjacent battery cell groups 200, one side of the partition member 131 is connected with the bottom guard plate 120, one side of the partition member 131 remote from the bottom guard plate 120 is connected with the fixing member 132, and the fixing member 132 abuts against one side of the battery cell group 200 remote from the bottom guard plate 120, so that the battery cell group 200 can be restricted from moving in a direction of exiting the accommodating cavity 101, so that the battery pack can be assembled.

Specifically, the partition member 131 is clamped between two adjacent battery cell groups 200, the fixing member 132 is detachably connected with the partition member 131 in a bolt or screw driving manner, the fixing member 132 is abutted with one side of the battery cell group 200 away from the bottom guard plate 120, the battery cell group 200 can be limited to move along the direction of exiting the accommodating cavity 101, the operation is simple, the convenience and the rapidness are realized, and the battery pack can be conveniently assembled.

The partition member 131 and the fixing member 132 may be integrally formed, and the partition member 130 may be integrally inserted into the accommodating chamber 101, which is not limited herein.

Referring to fig. 5, in some embodiments of the present utility model, a first barrier rib 500 is connected to a side wall of the accommodating cavity 101 facing the separation component 130, the side wall of the accommodating cavity 101, the first barrier rib 500 and the battery cell group 200 are enclosed to form a first glue filling groove 510, one end of the first barrier rib 500 facing the battery cell group 200 is attached to the battery cell group 200, an adhesive is filled in the first glue filling groove 510, the side wall of the accommodating cavity 101 is adhered to the battery cell group 200 through the adhesive, the first barrier rib 500 can block the adhesive from flowing downwards to contact with the liquid cooling plate 400, so that the situation that the liquid cooling plate 400 is adhered to the battery cell group 200 is avoided, and the liquid cooling plate 400 can be conveniently detached, thereby reducing the maintenance cost of the battery pack.

Specifically, by arranging the first glue filling groove 510, the cell set 200 can be conveniently adhered to the side wall of the accommodating cavity 101, and the fixing strength of the cell set 200 in the box assembly 100 can be improved, so that the shaking condition of the cell set 200 is avoided; in addition, the one end of first barrier strip 500 is laminated with electric core group 200, and first barrier strip 500 can separate the adhesive downwardly flowing to with liquid cooling board 400 contact to avoid appearing the condition emergence that liquid cooling board 400 and electric core group 200 bond, can conveniently dismantle liquid cooling board 400, thereby reduce the cost of maintenance of battery package.

It should be noted that the first blocking strip 500 may have elasticity, and the first blocking strip 500 may be elastically deformed to counteract a matching error between the cell stack 200 and the sidewall of the receiving cavity 101, so as to ensure that the first blocking strip 500 can block the adhesive from flowing down to contact with the liquid cooling plate 400. In addition, the elasticity of the first barrier rib 500 can limit the interval between the cell group 200 and the sidewall of the receiving cavity 101, so that the alignment uniformity of the cell group 200 is better, and the bonding thickness of the adhesive can be also achieved.

It should be noted that, the first blocking strip 500 is in a strip structure, the first blocking strip 500 extends along the length direction of the battery cell group 200, and the first blocking strip 500 may be a thin-wall plastic part such as foam, which is not limited herein.

Referring to fig. 4 and 6, in some embodiments of the present utility model, the case assembly 100 further includes a spacer 131 sandwiched between two adjacent sets of the battery cell groups 200, the spacer 131 is connected with a second barrier rib 140, the spacer 131, the second barrier rib 140, and the battery cell groups 200 are enclosed to form a second glue filling groove 150, one end of the second barrier rib 140 away from the spacer 131 is attached to the battery cell groups 200, the second glue filling groove 150 is filled with an adhesive, the spacer 131 is adhered to the battery cell groups 200 by the adhesive, and the second barrier rib 140 can block the adhesive from flowing downward to contact with the liquid cooling plate 400, so as to avoid the situation that the liquid cooling plate 400 is adhered to the battery cell groups 200, and facilitate the disassembly of the liquid cooling plate 400, thereby reducing the maintenance cost of the battery pack.

Specifically, by arranging the second glue filling groove 150, the cell group 200 can be conveniently adhered to the partition 131, and the fixing strength of the cell group 200 in the box assembly 100 can be improved, so that the situation that the cell group 200 shakes is avoided; in addition, the one end that the separating piece 131 was kept away from to the second barrier strip 140 is laminated with electric core group 200, and the second barrier strip 140 can separate the adhesive downwardly flowing to with the contact of liquid cooling board 400 to avoid appearing the condition that liquid cooling board 400 and electric core group 200 bond to take place, can conveniently dismantle liquid cooling board 400, thereby reduce the cost of maintenance of battery package.

It should be noted that the second blocking strip 140 may have elasticity, and the second blocking strip 140 may be elastically deformed to counteract a matching error between the cell set 200 and the second blocking strip 140, so as to ensure that the second blocking strip 140 can block the adhesive from flowing down to contact with the liquid cooling plate 400.

Referring to fig. 4 and 6, in some embodiments of the present utility model, a guide portion 1311 is disposed at an end of the separator 131 away from the bottom guard 120, the guide portion 1311 is located at a notch of the second glue filling groove 150, and a distance between the guide portion 1311 and the battery cell group 200 is gradually reduced along a direction approaching the bottom guard 120, so that an adhesive can flow into the second glue filling groove 150 conveniently, thereby improving production efficiency of the battery pack.

Specifically, the guide portion 1311 is of a bevel structure, after the cell set 200 enters the accommodating cavity 101, an operator can pour an adhesive into the guide portion 1311, and as the guide portion 1311 flows into the side wall of the cell set 200, the area where the cell set 200 is adhered to the separator 131 and the adhesive is larger, so that the fixing strength of the cell set 200 in the case assembly 100 can be improved.

The guide portion 1311 may have an arc surface structure, and may be configured to guide the adhesive to flow into the second glue groove 150, which is not limited thereto.

Referring to fig. 7, in some embodiments of the present utility model, the fixing member 132 includes a connecting portion 1321, a first limiting portion 1322 and a second limiting portion 1323, the first limiting portion 1322 and the second limiting portion 1323 are respectively disposed on opposite sides of the connecting portion 1321, the connecting portion 1321 is connected to the separating member 131, one of two adjacent sets of the battery cell sets 200 is connected to the first limiting portion 1322, and the other is connected to the second limiting portion 1323, so that a single fixing member 132 can fix the two adjacent sets of battery cell sets 200, and can facilitate fixing the battery cell sets 200.

Specifically, one side of the connection portion 1321 is bent to form a first limiting portion 1322, and the opposite side of the connection portion 1321 is bent to form a second limiting portion 1323, where the first limiting portion 1322 and the second limiting portion 1323 can respectively abut against the corresponding cell stack 200, so as to fix the cell stack 200.

The connecting portion 1321, the first limiting portion 1322, and the second limiting portion 1323 are integrally configured, so that the number of dies can be reduced, and the manufacturing cost of the fixing member 132 can be reduced.

Referring to fig. 1 and 3, in some embodiments of the present utility model, opposite sides of the accommodating cavity 101 are respectively provided with an avoidance groove 102, and the avoidance groove 102 is used for avoiding a clamp for clamping the battery cell group 200, so that the clamp can clamp the battery cell group 200 and is placed in the accommodating cavity 101.

Specifically, when the clamp clamps the battery cell group 200, the clamp clamps two ends of the battery cell group 200 in the length direction, and the battery cell group 200 is integrally placed in the accommodating cavity 101, the situation that the side wall of the accommodating cavity 101 interferes with the clamp can be avoided by arranging the avoiding groove 102, so that the clamp can clamp the battery cell group 200 in the accommodating cavity 101.

Referring to fig. 2, in some embodiments of the present utility model, the battery pack further includes a heat insulating member 600, where the heat insulating member 600 is sandwiched between the bottom guard plate 120 and the liquid cooling plate 400, so as to insulate the liquid cooling plate 400, so as to reduce the occurrence of the temperature of the liquid cooling plate 400 emanating from the bottom guard plate 120 to the outside, and improve the cooling effect of the liquid cooling plate 400.

It should be understood that the heat insulation member 600 is a heat insulation cotton structure, and the like, and is not limited thereto.

Referring to fig. 1 and 2, a vehicle according to a second aspect of the present utility model, including a battery pack according to the first aspect of the present utility model, has a case assembly 100 connected to a chassis of the vehicle, so that a serviceman can individually replace a bottom guard plate 120 and a liquid cooling plate 400, and the maintenance cost of the battery pack can be reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.

Claims

1. A battery pack, comprising:

the box body assembly (100) comprises a frame (110) and a bottom guard plate (120), wherein the bottom guard plate (120) is detachably connected with the frame (110), and a containing cavity (101) is formed by enclosing the bottom guard plate (120) and the frame (110);

the battery cell group (200) is accommodated in the accommodating cavity (101);

the liquid cooling plate (400) is arranged on one side of the battery cell group (200) and is positioned between the battery cell group (200) and the bottom guard plate (120);

a heat conduction member (300) interposed between the liquid cooling plate (400) and the battery cell group (200);

wherein, the liquid cooling plate (400) is detachably connected with the heat conducting piece (300), and/or the heat conducting piece (300) is detachably connected with the battery cell group (200).

2. The battery pack according to claim 1, wherein the case assembly (100) further includes N partition assemblies (130) disposed at intervals side by side, N partition assemblies (130) partition the accommodating cavity (101) into n+1 accommodating spaces, the cell group (200) is correspondingly configured with n+1 groups, the cell group (200) is accommodated in the corresponding accommodating space, the partition assemblies (130) are provided with limiting structures, the limiting structures are abutted to one sides, away from the bottom guard plate (120), of the cell group (200), and N is a positive integer.

3. The battery pack according to claim 1, wherein the case assembly (100) further comprises a partition assembly (130), the partition assembly (130) comprises a partition member (131) and a fixing member (132), the partition member (131) is sandwiched between two adjacent cell groups (200), one side of the partition member (131) is connected with the bottom guard plate (120), one side of the partition member (131) away from the bottom guard plate (120) is connected with the fixing member (132), and one side of the fixing member (132) away from the bottom guard plate (120) is abutted with the cell group (200).

4. A battery pack according to claim 3, wherein the fixing member (132) comprises a connecting portion (1321), a first limiting portion (1322) and a second limiting portion (1323), the first limiting portion (1322) and the second limiting portion (1323) are respectively disposed on two opposite sides of the connecting portion (1321), the connecting portion (1321) is connected with the separating member (131), two adjacent groups of the battery cell groups (200), one of which is connected with the first limiting portion (1322) and the other of which is connected with the second limiting portion (1323).

5. The battery pack according to any one of claims 2 to 4, wherein a first blocking strip (500) is connected to a side wall of the accommodating cavity (101) facing the partition component (130), the side wall of the accommodating cavity (101), the first blocking strip (500) and the battery cell group (200) are enclosed to form a first glue filling groove (510), one end of the first blocking strip (500) facing the battery cell group (200) is attached to the battery cell group (200), an adhesive is filled in the first glue filling groove (510), and the side wall of the accommodating cavity (101) is adhered to the battery cell group (200) through the adhesive.

6. The battery pack according to claim 1, wherein the case assembly (100) further comprises a partition member (131), the partition member (131) is sandwiched between two adjacent cell groups (200), the partition member (131) is connected with a second blocking strip (140), a second glue filling groove (150) is formed by enclosing the partition member (131), the second blocking strip (140) and the cell groups (200), one end, far away from the partition member (131), of the second blocking strip (140) is attached to the cell groups (200), an adhesive is filled in the second glue filling groove (150), and the partition member (131) is attached to the cell groups (200) through the adhesive.

7. The battery pack according to claim 6, wherein a guide portion (1311) is provided at an end of the separator (131) away from the bottom guard plate (120), the guide portion (1311) is located at a notch of the second glue filling groove (150), and a distance between the guide portion (1311) and the battery cell group (200) is gradually reduced in a direction approaching the bottom guard plate (120).

8. The battery pack according to claim 1, wherein opposite sides of the accommodating cavity (101) are respectively provided with an avoidance groove (102), and the avoidance grooves (102) are used for avoiding a clamp for clamping the battery cell group (200).

9. The battery pack according to claim 1, further comprising a thermal insulation member (600), the thermal insulation member (600) being sandwiched between the bottom guard plate (120) and the liquid cooling plate (400).

10. A vehicle comprising a battery pack according to any one of claims 1 to 9, the tank assembly (100) being connected to the chassis of the vehicle.