CN218896739U

CN218896739U - Battery pack

Info

Publication number: CN218896739U
Application number: CN202223154209.2U
Authority: CN
Inventors: 陈荣康; 钱佳博; 宋海阳; 赵亮; 曲凡多
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-21
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a battery pack, comprising: a housing having an installation space formed therein; the first battery cell and the second battery cell are arranged in the installation space; the connecting piece, the connecting piece includes first plate and second plate, and first plate connects the bottom at first electric core and second electric core, and the top at first electric core and second electric core is connected to the second plate. Therefore, the battery pack provided by the utility model has good compatibility and high rigidity.

Description

Battery pack

Technical Field

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

Background

According to the conventional battery pack scheme, most of the inside of the battery pack is provided with a transverse longitudinal beam to ensure the structural strength of the battery pack, so that the effective utilization space of the battery pack is wasted, and the concept of a blade battery cell is provided. The battery core for the blade battery core serves as a cross beam of the battery pack, so that the rigidity of the whole battery pack is improved.

However, since the compatibility with the battery pack is not good after the cell length exceeds 600mm, the concept of a short blade having a cell length of 300mm to 600mm is proposed, but the short blade loses its function as a battery pack beam. The current scheme can also promote battery package rigidity through increasing the crossbeam, also can lead to the fact extravagant to the space of battery package.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an objective of the present utility model is to provide a battery pack to solve the problem that the compatibility and rigidity of the battery pack cannot be achieved in the prior art.

According to an embodiment of the present utility model, a battery pack includes: a housing having an installation space formed therein; the first battery cell and the second battery cell are arranged in the installation space; the connecting piece, the connecting piece includes first plate and second plate, first plate connects first electric core with the bottom of second electric core, the second plate connects first electric core with the top of second electric core.

According to the battery pack disclosed by the embodiment of the utility model, the first plate is connected to the bottoms of the first battery cell and the second battery cell, and the second plate is connected to the tops of the first battery cell and the second battery cell, so that the battery pack is good in compatibility and high in rigidity.

In some embodiments, the first cell and the second cell have a first direction and a second direction, the first cell and the second cell are disposed side by side along the first direction, and the first cell, the second cell, the first plate, and the second plate extend along the second direction.

In some embodiments, at least two first cavities are disposed in the first plate and/or the second plate, at least two first cavities are disposed in sequence along the first direction, and at least two first cavities extend along the second direction.

In some embodiments, the first electric core and the second electric core form a space in the first direction, the connecting piece further includes a third plate, the third plate is disposed in the space, one end of the third plate is connected with the first plate, and the other end of the third plate is connected with the second plate.

In some embodiments, the third plate and the first plate are integrally formed.

In some embodiments, the third plate is detachably connected to the second plate.

In some embodiments, at least two second cavities are disposed in the third plate, at least two second cavities are sequentially disposed along the height direction of the first electric core, and at least two second cavities extend along the second direction.

In some embodiments, the casing includes a frame and a bottom guard board, the bottom guard board is arranged on the frame, the bottom guard board protrudes towards a direction away from the first electric core and the second electric core to form a first groove, an exhaust channel is jointly formed by the first groove, the first electric core and the second electric core, an explosion-proof valve is arranged at the bottoms of the first electric core and the second electric core, and the explosion-proof valve is arranged in the exhaust channel.

In some embodiments, the housing further includes a cooling plate disposed on the frame to define the installation space together with the frame and the bottom guard plate, the cooling plate protruding in a direction away from the first cell and the second cell to form a second groove, and the second plate is stopped on the second groove.

In some embodiments, the cooling plate protrudes away from the first cell and the second cell to form a flow channel groove.

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 structure of a battery pack in an embodiment of the present utility model;

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

fig. 3 is an enlarged view of section I of fig. 2 in accordance with the present utility model.

Reference numerals:

100. a battery pack;

10. a housing; 101. a frame; 102. a bottom guard board; 1021. a first groove; 103. a cooling plate; 1031. a second groove; 1032. a flow channel groove; 104. an installation space;

20. a first cell; 201. an exhaust passage; 202. an explosion-proof valve;

30. a second cell; 301. a spacing space;

40. a connecting piece; 401. a first plate member; 4011. a first cavity; 402. a second plate member; 403. a third plate member; 4031. a second cavity.

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 the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery pack 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 3.

As shown in fig. 1 to 2, a battery pack 100 according to an embodiment of the present utility model includes: the battery comprises a shell 10, a first battery cell 20, a second battery cell 30 and a connecting piece 40.

An installation space 104 is formed inside the housing 10; the first battery cell 20 and the second battery cell 30 are arranged in the installation space 104; the connector 40 includes a first plate 401 and a second plate 402, the first plate 401 is connected to the bottoms of the first cell 20 and the second cell 30, and the second plate 402 is connected to the tops of the first cell 20 and the second cell 30.

It will be appreciated that the housing 10 is a hollow structure having an installation space 104, and that the first and

second battery cells

20 and 30 are installed in the installation space 104. In the prior art, the first and

second battery cells

20 and 30 are located in the installation space 104 and are not connected to each other, resulting in low rigidity of the battery pack 100. This application is then through connecting the bottom at first electric core 20 and second electric core 30 with first plate 401, the top at first electric core 20 and second electric core 30 is connected to second plate 402, thereby first electric core 20 and second electric core 30 are not direct continuous, but comparatively firmly interconnect through connecting piece 40, both have the better characteristic of short electric core to battery package 100 size compatibility in first electric core 20 or the second electric core 30, make first electric core 20 and second electric core 30 can regard as the inside crossbeam structure of battery package 100 again, strengthen the rigidity of battery package 100.

Specifically, the second plate 402 is bonded to the top of the first battery cell 20 and the second battery cell 30 through the structural adhesive, then the first plate 401 is bonded to the bottom of the first battery cell 20 and the second battery cell 30, and the first battery cell 20 and the second battery cell 30 form a rigid whole, and then the whole is placed in the installation space 104 of the housing 10.

It should be noted that the specific manner of "connection" is not particularly limited, and those skilled in the art may select according to need, for example, the connection is achieved by applying a heat conductive structural adhesive. Meanwhile, the "first battery cell 20" and the "second battery cell 30" may refer to a structure formed by stacking a plurality of short battery cells, which is not described herein again.

According to the battery pack 100 of the embodiment of the utility model, the first plate 401 is connected to the bottoms of the first battery cell 20 and the second battery cell 30, and the second plate 402 is connected to the tops of the first battery cell 20 and the second battery cell 30, so that the battery pack 100 has good compatibility and high rigidity.

In some embodiments, referring to fig. 1-2, the first and

second cells

20, 30 have a first direction and a second direction, the first and

second cells

20, 30 are disposed side-by-side along the first direction, and the first and

second cells

20, 30, the first and

second plates

401, 402 extend along the second direction. It will be appreciated that the first direction may refer to the left-right direction in fig. 1, and the second direction may refer to the up-down direction in fig. 1. The first battery cell 20 and the second battery cell 30 are arranged at intervals along the left-right direction, and meanwhile, the second plate 402, the first battery cell 20, the second battery cell 30 and the first plate 401 are sequentially stacked from top to bottom.

In some embodiments, referring to fig. 3, the first plate 401 is provided at least two first cavities 4011 inside, and the at least two first cavities 4011 are sequentially arranged along the first direction. It can be understood that by providing at least two first cavities 4011 in the interior of the first plate 401, the rigidity of the first and

second cells

20 and 30 connected as a whole is increased.

It should be noted that "at least two" is understood to be two, three, four, five, or the like, and those skilled in the art may set the number as needed. Specifically, the first plate 401 has a cavity formed therein, and the cavity may be partitioned into a plurality of first cavities 4011 by providing different numbers of baffles. For example, when one baffle plate is provided, the number of first cavities 4011 is 2; when two baffles are arranged, the number of the first cavities 4011 is 3, and the like, the two baffles can be arranged according to the needs.

In other embodiments, at least two first cavities 4011 are provided in the second plate 402, and the at least two first cavities 4011 are disposed in sequence along the first direction. It will be appreciated that by providing at least two first cavities 4011 in the interior of the second plate 402, the rigidity of the first and

second cells

20, 30 as a whole is increased. The understanding of "at least two" is the same as the above description and will not be repeated here.

In other embodiments, at least two first cavities 4011 are disposed in the first plate 401 and the second plate 402, at least two first cavities 4011 are disposed in sequence along the first direction, and at least two first cavities 4011 extend along the second direction. That is, by providing at least two first cavities 4011 in each of the first plate 401 and the second plate 402, the rigidity of the first battery cell 20 and the second battery cell 30 after connection is greatly increased. The understanding of "at least two" is the same as the above description and will not be repeated here.

In some embodiments, referring to fig. 2, the first and

second battery cells

20 and 30 are formed with a space 301 in the first direction, and the connector 40 further includes a third plate 403, where the third plate 403 is disposed in the space 301, and one end of the third plate 403 is connected to the first plate 401, and the other end is connected to the second plate 402. It can be understood that, by providing the third plate 403 between the first plate 401 and the second plate 402 in the up-down direction, the stability of the first plate 401 and the second plate 402 after being connected to the first battery cell 20 and the second battery cell 30 can be greatly enhanced, thereby increasing the rigidity of the battery pack 100. Specifically, an i-shaped structural longitudinal beam can be formed among the first plate 401, the second plate 402 and the third plate 403, so that the rigidity of the whole structure is enhanced.

In some embodiments, the third plate 403 and the first plate 401 are integrally formed. It can be understood that the integrated forming process is simple and convenient, and meanwhile, the connection of the two is firm.

In some embodiments, the third plate 403 and the second plate 402 are removably connected. It will be appreciated that the third plate member 403 is fixedly connected to the first plate member 401 to form a T-shaped structure, and then the second plate member 402 is detachably connected to the third plate member 403, so as to facilitate connection and detachment between the third plate member 403 and the second plate member 402. The specific manner of "detachably connecting" is not particularly limited, and those skilled in the art may select as needed, and may be, for example, bolting or riveting.

In some embodiments, referring to fig. 2, at least two second cavities 4031 are disposed in the third plate 403, where the at least two second cavities 4031 are disposed in sequence along the height direction of the first battery cell 20, and the at least two second cavities 4031 extend along the second direction. It can be understood that the height direction of the first battery cell 20 is the up-down direction, and at least two first cavities 4011 are provided, so that the rigidity of the first battery cell 20 and the second battery cell 30 after being connected is increased, and the rigidity of the battery pack 100 is further improved.

In some embodiments, referring to fig. 1-2, the housing 10 includes a frame 101 and a bottom guard plate 102, the bottom guard plate 102 is disposed on the frame 101, the bottom guard plate 102 protrudes away from the first battery cell 20 and the second battery cell 30 to form a first groove 1021, an exhaust channel 201 is formed by the first groove 1021, the first battery cell 20 and the second battery cell 30 together, an explosion-proof valve 202 is disposed at bottoms of the first battery cell 20 and the second battery cell 30, and the explosion-proof valve 202 is disposed in the exhaust channel 201. It can be understood that the exhaust channel 201 can be used as the exhaust channel 201 in thermal runaway of the battery cell, and is separated from the high-voltage connection of the poles at two ends of the battery cell, so as to realize thermal power separation and avoid the thermal runaway of the battery cell caused by the contact of the explosion matter of the battery cell with the high-voltage connection in thermal runaway.

In some embodiments, referring to fig. 1-3, the housing 10 further includes a cooling plate 103, where the cooling plate 103 is disposed on the frame 101 to define, together with the frame 101 and the bottom guard 102, an installation space 104, and the cooling plate 103 protrudes away from the first battery cell 20 and the second battery cell 30 to form a second groove 1031, and the second plate 402 abuts against the second groove 1031. It can be appreciated that the cooling plate 103 in the prior art is a large flat plate structure, and the second groove 1031 is punched on the cooling plate 103 in this application, and the second plate 402 can be disposed in the second groove 1031, so that the overall structure of the battery pack 100 is firmer.

In some embodiments, referring to fig. 2, the cooling plate 103 protrudes away from the first and

second cells

20, 30 to form a flow channel slot 1032. It can be understood that the cooling effect of the battery module is better by providing the flow channel grooves 1032 on the cooling plate 103. Specifically, the flow path grooves 1032 are provided in plurality at intervals in the left-right direction.

One embodiment of the battery pack 100 of the present utility model is described below with reference to the accompanying drawings.

Referring to fig. 1 to 3, a battery pack 100 according to an embodiment of the present utility model includes: the battery comprises a shell 10, a first battery cell 20, a second battery cell 30 and a connecting piece 40.

An installation space 104 is formed inside the housing 10; the first battery cell 20 and the second battery cell 30 are arranged in the installation space 104; the connector 40 includes a first plate 401, a second plate 402, and a third plate 403, where the first plate 401 is connected to the bottoms of the first and

second cells

20 and 30, and the second plate 402 is connected to the tops of the first and

second cells

20 and 30. The first and

second cells

20 and 30 are formed with a space 301 in the first direction, a third plate 403 is disposed in the space 301, one end of the third plate 403 is connected to the first plate 401, and the other end is connected to the second plate 402.

The third plate 403 and the first plate 401 are integrally formed. The third plate 403 and the second plate 402 are bolted. The third plate 403 is provided with two second cavities 4031 inside, the two second cavities 4031 are sequentially arranged along the height direction of the first battery cell 20, and the two second cavities 4031 extend along the second direction.

The first and

second battery cells

20 and 30 have a first direction and a second direction, the first and

second battery cells

20 and 30 are disposed side by side along the first direction, and the first and

second battery cells

20 and 30, the first and

second plate members

401 and 402 extend along the second direction. Five first cavities 4011 are provided in the first plate 401, the five first cavities 4011 being disposed in sequence along a first direction, the five first cavities 4011 extending along a second direction.

The casing 10 includes frame 101, end backplate 102 and cooling plate 103, and end backplate 102 is established on frame 101, and end backplate 102 is to keeping away from the direction protrusion of first electric core 20 and second electric core 30 in order to be formed with first recess 1021, and first recess 1021, first electric core 20 and second electric core 30 are formed with exhaust passage 201 jointly, and the bottom of first electric core 20 and second electric core 30 is equipped with explosion-proof valve 202, and explosion-proof valve 202 is established in exhaust passage 201. The cooling plate 103 is disposed on the frame 101 to define an installation space 104 together with the frame 101 and the bottom guard plate 102, the cooling plate 103 protrudes away from the first battery cell 20 and the second battery cell 30 to form a second groove 1031, and the second plate 402 abuts against the second groove 1031. The cooling plate 103 protrudes in a direction away from the first and

second cells

20 and 30 to form a flow channel groove 1032.

In the description of the present specification, reference to the terms "some embodiments," "optionally," "further," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, comprising:

a housing (10), wherein an installation space (104) is formed inside the housing (10);

a first cell (20) and a second cell (30) disposed in the installation space (104);

the connecting piece (40), connecting piece (40) include first plate (401) and second plate (402), first plate (401) are connected first electric core (20) with the bottom of second electric core (30), second plate (402) are connected first electric core (20) with the top of second electric core (30).

2. The battery pack according to claim 1, wherein the first cell (20) and the second cell (30) have a first direction and a second direction, the first cell (20) and the second cell (30) being arranged side by side along the first direction, the first cell (20), the second cell (30), the first plate (401) and the second plate (402) extending along the second direction.

3. The battery pack according to claim 2, wherein the first plate (401) and/or the second plate (402) are provided inside with at least two first cavities (4011), at least two of the first cavities (4011) being arranged in sequence along the first direction, at least two of the first cavities (4011) extending along the second direction.

4. The battery pack according to claim 2, wherein the first cell (20) and the second cell (30) are formed with a spacing space (301) in the first direction, the connecting member (40) further includes a third plate (403), the third plate (403) is disposed in the spacing space (301), one end of the third plate (403) is connected to the first plate (401), and the other end is connected to the second plate (402).

5. The battery pack according to claim 4, wherein the third plate member (403) and the first plate member (401) are integrally formed.

6. The battery pack according to claim 4, wherein the third plate member (403) and the second plate member (402) are detachably connected.

7. The battery pack according to claim 4, wherein at least two second cavities (4031) are provided in the third plate (403), the at least two second cavities (4031) being disposed in sequence along the height direction of the first cell (20), the at least two second cavities (4031) extending along the second direction.

8. The battery pack according to claim 1, wherein the housing (10) comprises a frame (101) and a bottom guard plate (102), the bottom guard plate (102) is arranged on the frame (101), the bottom guard plate (102) protrudes away from the first electric core (20) and the second electric core (30) to form a first groove (1021), an exhaust channel (201) is jointly formed by the first groove (1021), the first electric core (20) and the second electric core (30), an explosion-proof valve (202) is arranged at the bottoms of the first electric core (20) and the second electric core (30), and the explosion-proof valve (202) is arranged in the exhaust channel (201).

9. The battery pack according to claim 8, wherein the case (10) further includes a cooling plate (103), the cooling plate (103) being provided on the frame (101) to define the installation space (104) together with the frame (101) and the bottom guard plate (102), the cooling plate (103) protruding in a direction away from the first cell (20) and the second cell (30) to form a second groove (1031), the second plate (402) being stopped on the second groove (1031).

10. The battery pack according to claim 9, wherein the cooling plate (103) protrudes in a direction away from the first cell (20) and the second cell (30) to form a flow channel groove (1032).