CN116387734A

CN116387734A - Battery frame, battery unit, battery assembly, battery module and battery

Info

Publication number: CN116387734A
Application number: CN202310585571.5A
Authority: CN
Inventors: 畅志远; 刘洋; 王文龙; 张海涛; 王霄远
Original assignee: China Aviation Lithium Battery Co Ltd
Current assignee: China Aviation Lithium Battery Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-07-04

Abstract

The invention relates to the technical field of batteries, and provides a battery frame, a battery unit, a battery assembly, a battery module and a battery. The battery frame comprises a first bracket, a second bracket and a heat dissipation plate, wherein the second bracket and the first bracket are arranged in a split manner to form an installation space; the heat dissipation plate is arranged in an installation space formed between the first bracket and the second bracket through the limiting clamping structure. According to the battery frame, the first support and the second support which are arranged in a split mode are adopted, and the heat dissipation plate is arranged in the installation space formed between the first support and the second support through the limiting clamping structure, so that the size and the weight of the first support and the second support can be reduced, the heat dissipation area of the heat dissipation plate is increased, and the heat dissipation performance of the battery frame is enhanced.

Description

Battery frame, battery unit, battery assembly, battery module and battery

Technical Field

The present invention relates to the field of battery technologies, and in particular, to a battery frame, a battery unit, a battery assembly, a battery module, and a battery.

Background

In the related art, the soft package battery uses an aluminum plastic film as a shell, and a plurality of structural members are omitted, so that the soft package battery is poor in strength and rigidity. Meanwhile, the soft package battery has no structural part for heat conduction, so that the heat dissipation performance of the battery is poor. The soft package battery is usually fixed in the battery frame, so that the battery is fixed, protected and radiated.

However, the existing battery frame is an integral plastic frame, and a heat dissipation aluminum sheet is embedded in the frame to dissipate heat of the battery. The main problems of the battery frame are that the plastic piece has large size and weight, the heat dissipation aluminum sheet has small size and poor heat dissipation performance.

Disclosure of Invention

The invention provides a battery frame, a battery unit, a battery assembly, a battery module and a battery, so as to optimize the structure of the battery frame and improve the heat dissipation performance of the battery frame.

In order to achieve the above purpose, the present invention provides the following technical solutions:

according to a first aspect of the present invention, there is provided a battery frame comprising:

a first bracket;

the second bracket is arranged in a split mode with the first bracket so as to form an installation space;

and the radiating plate is arranged in an installation space formed between the first bracket and the second bracket through a limiting clamping structure.

According to the battery frame, the first support and the second support which are arranged in a split mode are adopted, and the heat dissipation plate is arranged in the installation space formed between the first support and the second support through the limiting clamping structure, so that the size and the weight of the first support and the second support can be reduced, the heat dissipation area of the heat dissipation plate is increased, and the heat dissipation performance of the battery frame is enhanced.

According to a second aspect of the present invention, there is provided a battery unit including a unit cell fixedly mounted in a battery frame, and the large surface of the unit cell is in contact with the heat dissipation plate.

According to the battery unit provided by the invention, due to the use of the battery frame provided by the invention, the contact area between the single battery and the heat dissipation plate is increased, the heat conduction between the single battery and the heat dissipation plate is enhanced, the heat dissipation effect of the single battery is improved, and the light weight of the battery unit is facilitated.

According to a third aspect of the present invention, there is provided a battery assembly comprising a heating film and two of the battery cells, the heating film being located between the two battery cells, large surfaces of the two battery cells being in contact with both surfaces of the heating film, respectively.

According to the battery assembly provided by the invention, the battery unit is used, so that the rapid temperature rise and temperature reduction of the battery can be realized, the battery temperature can be effectively regulated and controlled by combining the use conditions, and the service life and the safety performance of the battery are improved. Meanwhile, the heating film is arranged between the two battery units, so that the heat conduction path and heat loss can be reduced, and the total heating power is improved.

According to a fourth aspect of the present invention, there is provided a battery module comprising a first battery cell, a last battery cell and at least one battery assembly, the battery assembly being located between the first battery cell and the last battery cell, wherein the first battery cell and the last battery cell are both the battery cells.

The battery module provided by the invention can realize rapid temperature rise and temperature reduction of the battery, so that the battery module is convenient to combine with the use working condition, and the battery temperature is effectively regulated and controlled, thereby prolonging the service life and improving the safety performance of the battery module. Meanwhile, the size and the weight of the first bracket and the second bracket are smaller, and the overall weight of the battery module is smaller, so that the energy density of the battery module is improved.

According to a fifth aspect of the present invention, there is provided a battery including the battery module.

The battery provided by the invention has the advantages of small overall weight, high safety performance and high energy density due to the use of the battery module.

Drawings

For a better understanding of the present application, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present application. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. Wherein:

Fig. 1 is a schematic structural view of a battery frame provided in the present embodiment;

fig. 2 is a schematic structural view of a battery frame according to another view angle of the present embodiment;

fig. 3 is an exploded view of the battery frame provided in the present embodiment;

fig. 4 is a cross-sectional view of the battery frame provided in the present embodiment;

fig. 5 is a schematic structural view of a first bracket in the battery frame according to the present embodiment;

fig. 6 is a schematic structural view of the battery frame according to another view angle of the first bracket according to the present embodiment;

fig. 7 is a schematic structural view of a second bracket in the battery frame provided in the present embodiment;

fig. 8 is a schematic structural view of a battery unit according to the present embodiment;

fig. 9 is an exploded view of the battery unit provided in the present embodiment;

fig. 10 is a schematic structural view of a conductive member in a battery unit according to the present embodiment;

fig. 11 is a schematic structural view of a single battery and a conductive member in the battery unit according to the present embodiment in cooperation with a busbar;

fig. 12 is an exploded view of the battery pack provided in the present embodiment;

fig. 13 is a schematic structural diagram of a heating film and a battery unit in the battery assembly according to the present embodiment;

fig. 14 is a schematic structural view of a battery module according to the present embodiment;

Fig. 15 is a schematic view illustrating a structure of a battery module according to another view angle of the battery module according to the present embodiment;

fig. 16 is an exploded view of the battery module provided in the present embodiment;

fig. 17 is an exploded view of the first bracket and the line card in the present embodiment;

fig. 18 is a schematic diagram of the first bracket and the line card in the present embodiment;

fig. 19A is a schematic diagram showing a positional relationship between the temperature sensor and the battery cell in the present embodiment;

fig. 19B is a schematic diagram of a second positional relationship between the temperature sensor and the battery cell in the present embodiment;

fig. 19C is a schematic diagram of a third positional relationship between the temperature sensor and the battery cell in the present embodiment.

The reference numerals are explained as follows:

1-a battery frame; 11-a first bracket; 111-a first clamping part; 111 a-a positioning surface; 112-transverse plates; 113-a first vertical plate; 113 a-positioning edges; 114-a second vertical plate; 1141-positioning a boss; 1142-a first sub-positioning plate; 1142 a-a first positioning surface; 1143-a second sub-positioning plate; 1143 a-a second locating surface; 115-a third vertical plate; 116-side plates; 1161-clip-on protrusions; 117-connection; 1171-protrusions; 118-wire outlet holes; 119-wire bundle slots; 12-a second stent; 121-a second clamping part; 122-supporting plates; 123-positioning grooves; 124-tie holes; 13-a heat dissipation plate; 131-a first snap fit portion; 132—a primary heat plate; 133-a first side heat-conducting plate; 134-a second side heat-conducting plate; 135-a second snap fit; 2 a-a first cell unit; 2 b-tail battery cells; 21-single battery; 211-large surface; 212-a first tab; 213-second pole ear; 3-conductive members; 31-a first connection plate; 32-a second connection plate; 4 a-heating the film; 4 b-auxiliary heating film; 41-wire outlet end; 411-vertical section; 412-a lateral portion; 42-a power supply interface; a 5-end plate; 6-an insulating plate; 7-a temperature sensor; 8-module collection harness connectors; 9-line clamping; 91-clamping hooks; 10-bus bar.

Detailed Description

The technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present application, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present application.

In the description of the present application, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present application can be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, which are described in the exemplary embodiments of the present application, are described with the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present application. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

In a first aspect, the present embodiment provides a battery frame 1. Referring to fig. 1 to 7, the battery frame 1 provided in the present embodiment includes a first bracket 11, a second bracket 12, and a heat dissipation plate 13, the second bracket 12 being provided separately from the first bracket 11 to form an installation space for installing the heat dissipation plate; the heat dissipation plate 13 is mounted in a mounting space formed between the first bracket 11 and the second bracket 12 through a limit clamping structure.

The battery frame 1 provided in this embodiment, because of adopting the first bracket 11 and the second bracket 12 that are separately arranged, and installing the heat dissipation plate 13 in the installation space formed between the first bracket 11 and the second bracket 12 through the limit clamping structure, can reduce the size and weight of the first bracket 11 and the second bracket 12, and simultaneously increase the heat dissipation area of the heat dissipation plate 13, and enhance the heat dissipation performance of the battery frame 1.

In addition, the heat dissipation plate 13 occupies almost the entire installation space, i.e., the heat dissipation plate 13 occupies the entire middle area of the battery frame 1, and most of the area of the heat dissipation plate 13 is not covered by the first and

second brackets

11 and 12, so that the heat dissipation area of the heat dissipation plate 13 is maximized, i.e., the heat dissipation plate can be sufficiently contacted with the unit battery, improving the heat conduction effect of the heat dissipation plate.

In this embodiment, the first bracket 11 and the second bracket 12 are both made of plastic. The first bracket 11 and the second bracket 12 have smaller size and weight, so that the difficulty and cost of injection molding manufacturing are reduced.

In one embodiment, referring to fig. 3, 5 and 6, the limiting clamping structure includes a first clamping portion 111 and a first clamping matching portion 131, the first clamping portion 111 is disposed on the first bracket 11, the first clamping matching portion 131 is disposed on the heat dissipation plate 13, and the first clamping portion 111 is clamped with the first clamping matching portion 131, so that the first bracket 11 is fixedly connected with the heat dissipation plate 13.

As illustrated in fig. 3, 5 and 6, the first bracket 11 includes an elongated plate structure including a transverse plate 112, a first vertical plate 113 and a second vertical plate 114, where the first vertical plate 113 and the second vertical plate 114 are fixedly connected to the transverse plate 112, and the first vertical plate 113 and the second vertical plate 114 are disposed at parallel intervals. The first clamping portion 111 is fixedly connected with the first vertical plate 113, and the first clamping portion 111 is located between the first vertical plate 113 and the second vertical plate 114.

Referring to fig. 1, both ends of the elongated plate structure are provided with connection portions 117, and the connection portions 117 are provided with passages for passing fasteners to fixedly connect the plurality of first brackets 11 together.

Illustratively, the transverse plate 112, the first vertical plate and the second vertical plate are integrally formed, and the connecting portion 117 and the elongated plate body are integrally formed, so that not only is the production and processing convenient, but also the overall structural strength of the first bracket 11 can be improved, thereby ensuring that the heat dissipation plate 13 can be fixed firmly.

In one embodiment, as shown in fig. 1, a protruding portion 1171 is provided on one side of the connection portion 117, and in two adjacent first brackets 11, the protruding portion 1171 of one first bracket 11 can be limited in the channel of the connection portion 117 of the other first bracket 11.

Illustratively, when the number of the battery frames 1 is plural, the plural battery frames 1 are fixedly coupled together using fasteners such as bolts and nuts. The protruding portion 1171 is annular or open annular, and the protruding portion 1171 may be a hollow cylindrical structure, and an inner cavity of the hollow cylindrical structure is communicated with the channel, and of course, the protruding portion 1171 may also be a hollow prismatic structure. Illustratively, long bolts are used to pass through the passages of the connection portions 117 on each first bracket 11 and then are engaged with nuts to fixedly connect all the first brackets 11 together, and thus all the battery frames 1 together.

In this embodiment, the first engaging portion 111 is integrally formed with the first bracket 11.

In one embodiment, the first clamping portion 111 is a limiting boss, and the first clamping mating portion 131 is a limiting hole, and the limiting boss is limited to the limiting hole.

For example, referring to fig. 3 and 6, the number of the first clamping portions 111 is two, and the two first clamping portions 111 are disposed at intervals along the length direction of the first vertical plate 113. Accordingly, the number of the first clamping matching parts 131 is two, and the first clamping matching parts correspond to the two first clamping parts 111 respectively.

For the convenience of observation and installation, the second vertical plate 114 is provided with an opening at a position corresponding to the first clamping portion 111 so as to observe whether the heat dissipation plate 13 is installed in place.

It should be noted that, the first clamping portion 111 may also be a limiting hole, and correspondingly, the first clamping matching portion 131 is a limiting boss.

In this embodiment, referring to fig. 3 and 7, the limiting clamping structure further includes a second clamping portion 121 and a second clamping matching portion 135, the second clamping portion 121 is disposed on the second bracket 12, the second clamping matching portion 135 is disposed on the heat dissipation plate 13, and the second clamping portion 121 is clamped with the second clamping matching portion 135, so that the second bracket 12 is fixedly connected with the heat dissipation plate 13.

The second bracket 12 has a structure substantially identical to that of the first bracket 11 and also includes an elongated plate structure and a connecting portion 117; the second clamping portion 121 is also a limiting boss, and the second clamping mating portion 135 is also a limiting hole.

After the assembly is completed, the first clamping portion 111 is limited to the first clamping matching portion 131, and the second clamping portion 121 is limited to the second clamping matching portion 135.

In one embodiment, referring to fig. 4, the limiting boss has a positioning surface 111a, and the positioning surface 111a abuts against a wall of the limiting hole to limit the movement of the heat dissipation plate 13 between the first bracket 11 and the second bracket 12.

Taking the first clamping portion 111 as an example, as shown in fig. 4, the limiting boss has a positioning surface 111a, and the positioning surface 111a faces the transverse plate 112. Illustratively, the limiting hole is rectangular in shape, and the positioning surface 111a abuts against a hole wall of the limiting hole, which is close to the transverse plate 112.

Accordingly, the positioning surface 111a of the limiting boss on the second bracket 12 faces the transverse plate 112 of the second bracket 12.

Referring to fig. 6, an arrow direction X indicates a first direction perpendicular to the longitudinal direction of the first and

second brackets

11 and 12 and parallel to the plate surface of the heat dissipation plate 13. The heat dissipation plate 13 can be restricted from moving between the first bracket 11 and the second bracket 12, that is, the heat dissipation plate 13 is prevented from moving in the first direction by simultaneously positioning the heat dissipation plate 13 by the positioning surfaces of the limit bosses on the first bracket 11 and the second bracket 12.

In one embodiment, the first bracket 11 is provided with a positioning structure for positioning the position of the heat dissipation plate 13, so as to prevent the heat dissipation plate 13 from loosening and falling off. After the single battery is fixedly arranged on the battery frame 1, the position of the single battery is ensured to be fixed, and the safety of the battery module is further ensured.

In one embodiment, the positioning structure includes a positioning boss 1141 and a first positioning plate, where the positioning boss 1141 and the first positioning plate are both disposed on the first bracket 11, and a minimum distance between the positioning boss 1141 and a surface of the first positioning plate near the positioning boss 1141 is adapted to a thickness of the heat dissipation plate 13.

The first positioning plate is integrally formed with the first vertical plate 113. For convenience in describing the technical solution of the present embodiment, the first vertical plate 113 is taken as a first positioning plate. It should be appreciated that the first positioning plate may also be part of the first vertical plate 113.

Referring to fig. 6, arrow Y indicates a second direction, and a positioning boss 1141 is disposed on a surface of the second vertical plate 114 facing the first vertical plate 113, and the positioning boss 1141 is integrally formed with the second vertical plate 114. The minimum distance between the positioning boss 1141 and the surface of the first vertical plate 113, which is close to the positioning boss 1141, is adapted to the thickness of the heat dissipation plate 13, when the first clamping portion 111 is limited at the first clamping mating portion 131, the positioning boss 1141 and the first vertical plate 113 can clamp and fix the heat dissipation plate 13, so as to prevent the heat dissipation plate 13 from moving along the second direction, where the second direction is perpendicular to the plate surface of the first vertical plate 113.

Illustratively, the number of positioning bosses 1141 is four, and the four positioning bosses are disposed at intervals along the length direction of the second vertical plate.

In one embodiment, referring to fig. 6, the arrow direction Z represents a third direction, i.e., the set direction. The positioning structure further comprises a second positioning plate, and the second positioning plate is abutted against part of the surface of the heat dissipation plate 13 to limit the heat dissipation plate 13 to move along a set direction, wherein the set direction is parallel to the length direction of the first bracket 11.

Illustratively, referring to fig. 6, the second positioning plate includes a first sub-positioning plate 1142 and a second sub-positioning plate 1143, the first sub-positioning plate 1142 and the second sub-positioning plate 1143 being disposed opposite each other along the length direction of the first bracket 11; referring to fig. 3, the heat dissipation plate 13 includes a heat conduction plate 132, a first side heat conduction plate 133 and a second side heat conduction plate 134, where the first side heat conduction plate 133 and the second side heat conduction plate 134 are disposed at two ends of the heat dissipation plate 13 along a third direction, the first side heat conduction plate 133 abuts against a surface of the first sub-positioning plate 1142 away from the second sub-positioning plate 1143, and the second side heat conduction plate 134 abuts against a surface of the second sub-positioning plate 1143 away from the first sub-positioning plate 1142.

Illustratively, the first sub-positioning plate 1142 is fixedly connected to one end of the second vertical plate 114, the second sub-positioning plate 1143 is fixedly connected to the other end of the second vertical plate 114, and the first sub-positioning plate 1142 is perpendicular to the second sub-positioning plate 1143.

In this embodiment, the first sub-positioning plate 1142, the second sub-positioning plate 1143 and the second vertical plate 114 are integrally formed.

In this embodiment, the first side heat conductive plate 133, the second side heat conductive plate 134 and the main heat conductive plate 132 are integrally formed. Illustratively, the first side heat conductive plate 133 and the second side heat conductive plate 134 are positioned on the same side of the main heat conductive plate 132, and the first side heat conductive plate 133 and the second side heat conductive plate 134 are perpendicular to the main heat conductive plate 132.

After the first bracket 11 and the heat dissipation plate 13 are assembled, the first sub-positioning plate 1142 and the second sub-positioning plate 1143 are both located between the first side heat conduction plate 133 and the second side heat conduction plate 134, the first side heat conduction plate 133 abuts against a surface of the first sub-positioning plate 1142 away from the second sub-positioning plate 1143, and the second side heat conduction plate 134 abuts against a surface of the second sub-positioning plate 1143 away from the first sub-positioning plate 1142, so that the heat dissipation plate 13 is restricted from moving in the third direction.

It should be understood that references to "moving in a first direction", "moving in a second direction", "moving in a third direction" in this embodiment include moving in the direction of arrow X, Y, Z, as well as moving in a direction opposite to the direction of arrow X, Y, Z.

In some embodiments, the second bracket 12 is also provided with a positioning structure for positioning the position of the heat dissipation plate 13.

It should be noted that the positioning structure disposed on the second bracket 12 is substantially the same as the positioning structure disposed on the first bracket 11, and will not be described herein. Of course, the positioning structure may be provided only on the first bracket 11 or the second bracket 12.

In one embodiment, the first bracket 11 is provided with a first positioning portion, the second bracket 12 is provided with a second positioning portion and a third positioning portion, the first positioning portion and the second positioning portion are used for positioning the side edges of the single battery, and the third positioning portion is used for positioning the bottom edges of the single battery.

Through the combined action of first location portion, second location portion and third location portion, can fix a position the side and the base of battery cell simultaneously to fix the battery cell on the exact position, thereby be convenient for confirm the position of battery cell's utmost point ear, in order to follow-up welded fastening to utmost point ear and busbar.

In one embodiment, the first positioning portion includes a first positioning surface 1142a and a second positioning surface 1143a, where the first positioning surface 1142a and the second positioning surface 1143a are disposed opposite to each other along the length direction of the first bracket 11; the second positioning part comprises a third positioning surface and a fourth positioning surface which are oppositely arranged along the length direction of the second bracket 12; the third positioning portion includes a plurality of support plates 122, and the plurality of support plates 122 are disposed at intervals along the length direction of the second bracket 12.

For example, referring to fig. 1 and 6, the first positioning surface 1142a is a surface of the first sub-positioning plate 1142 away from the first side heat conductive plate 133, the second positioning surface 1143a is a surface of the second sub-positioning plate 1143 away from the second side heat conductive plate 134, the first positioning surface 1142a can abut against one side surface of the unit cell, and the second positioning surface 1143a can abut against the other side surface of the unit cell.

The structure of the second positioning portion is substantially the same as that of the first positioning portion, and will not be described herein.

In this embodiment, the first sub-positioning plate 1142 and the second sub-positioning plate 1143 cooperate with each other, so that the heat dissipation plate 13 can be positioned, and the single battery can also be positioned, so that the structures of the first bracket 11 and the second bracket 12 are simplified, the weight is further reduced, and the cost is saved.

Referring to fig. 1 and 7, a plurality of support plates 122 are disposed at intervals along the length direction of the lateral plate 112 of the second bracket 12, and the support plates 122 are illustratively perpendicular to the plate surface of the lateral plate 112 of the second bracket 12, the side surfaces of the support plates 122, which are away from the lateral plate 112, are designated as first support surfaces, the surfaces of the connection portions 117 of the second bracket 12, which are close to the heat dissipation plate 13, are designated as second support surfaces, which are in the same plane as the first support surfaces, and the bottom edges of the unit cells are located above the plurality of first and second support surfaces.

In a second aspect, the present embodiment provides a battery cell. Referring to fig. 8 to 11, the battery unit includes a unit cell 21 and the battery frame 1 provided in the present embodiment, the unit cell 21 is fixedly installed in the battery frame 1, and a large surface 211 of the unit cell 21 is in contact with the heat dissipation plate 13. The large surface 211 of the unit cell 21 is the surface of the cell having the largest area.

In the battery unit provided in this embodiment, due to the use of the battery frame provided in this embodiment, the contact area between the unit battery 21 and the heat dissipation plate 13 is increased, the heat conduction between the unit battery 21 and the heat dissipation plate 13 is enhanced, the heat dissipation effect of the unit battery 21 is improved, and the weight reduction of the battery unit is facilitated.

In this embodiment, the unit cell 21 is a soft pack cell.

The battery cell comprises a battery cell and electrolyte, the battery cell is arranged in a battery shell, and for a soft package battery, the battery shell is an aluminum-plastic film coated on the outer surface of the battery cell. The battery cell may be a laminated battery cell having a first pole piece, a second pole piece, and a separator therebetween, wherein the polarities of the first pole piece and the second pole piece are opposite. When the first pole piece is a positive pole piece, the second pole piece is a negative pole piece. Wherein the polarities of the first pole piece and the second pole piece can be interchanged.

Of course, the battery cell may be a winding type battery cell, that is, the first pole piece, the second pole piece and the diaphragm arranged between the first pole piece and the second pole piece are wound to obtain the winding type battery cell.

In one embodiment, the unit cells 21 are adhesively fixed to the battery frame 1. Specifically, the first bracket 11, the second bracket 12, the main heat conducting plate 132, the first side heat conducting plate 133 and the second side heat conducting plate 134 together form an accommodating space, the unit cell is located in the accommodating space, and the large surface 211 of the unit cell is in contact with the main heat conducting plate 132, so that heat conduction between the unit cell and the heat radiating plate 13 is realized.

Illustratively, the large surface 211 of the cell 21 is in indirect contact with the main heat conductive plate 132 through a heat conductive paste.

In one embodiment, the battery unit further includes a conductive member 3, and the conductive member 3 is made of metal, such as aluminum. The conducting piece 3 is fixedly arranged on the first bracket 11, and the lug of the single battery is electrically connected with the conducting piece 3 through laser welding.

In one embodiment, referring to fig. 10, the conductive member 3 includes a first connecting plate 31 and a second connecting plate 32, where the plate surface of the first connecting plate 31 is perpendicular to the plate surface of the second connecting plate 32, and the plate surface of the first connecting plate 31 is parallel to the extending direction of the tab of the unit cell, so that the tab of the unit cell can be attached to and welded to the plate surface of the first connecting plate 31, and the second connecting plate 32 is fixedly mounted on the first bracket 11 and is used for being fixedly connected with the busbar.

In this embodiment, the extending direction of the tab refers to the direction from the end close to the battery case to the end far from the battery case, and, for example, referring to fig. 11, the tab includes a first tab 212 and a second tab 213, and the extending direction of the first tab 212 is consistent with the extending direction of the second tab 213. The arrow direction M indicates the extending direction of the tab, and the surface of the tab is attached to and welded to the surface of the first connection plate 31 near the tab, so that the tab does not need to be bent, the flatness of the tab is easy to be ensured, and the welding defects such as cold welding and hollowness are not easy to occur. In addition, by welding the tab to the first connection plate 31 and welding the busbar 10 to the second connection plate 32, a slot is not required to be provided on the busbar, the overcurrent area of the busbar is ensured to be large, and a large current can be allowed to pass.

Because the face of first connecting plate 31 is parallel with the extending direction of battery cell's utmost point ear to need not to buckle the utmost point ear, just can laminate and weld the face of utmost point ear and first connecting plate 31, avoided the utmost point ear to bend the in-process flatness error that produces, and then avoided utmost point ear and conductive piece 3 laminating not tight problem, improved welding quality, simultaneously, owing to saved the utmost point ear process of bending, improved assembly efficiency.

The first bracket 11 is provided with a mounting position for mounting the second connection plate 32.

The number of the installation positions is two, each installation position is correspondingly provided with one conductive piece 3, one conductive piece 3 is used for being connected with a first lug 212 of a single battery, the other conductive piece 3 is used for being connected with a second lug 213 of the single battery, and the polarities of the first lug 212 and the second lug 213 are opposite.

The polarity of the first tab 212 is an anode, and the polarity of the second tab 213 is a cathode. The first tab 212 and the second tab 213 are led out from the same side of the unit cell, so that the conductive member 3 is connected with the tabs.

In this embodiment, two mounting locations are spaced apart along the length of the first bracket 11, that is, two mounting locations are spaced apart along the length of the transverse plate 112. Specifically, referring to fig. 6 and 8, two side plates 116 are disposed at positions between both ends of the lateral plate 112, a third vertical plate 115 is disposed between the two side plates 116 and the connecting portion 117 to which they are respectively adjacent, one of the side plates 116 and the connecting portion 117 to which they are adjacent and the first and third

vertical plates

113 and 115 between the side plates 116 and the connecting portion 117 define one mounting position, and the other side plate 116 and the connecting portion 117 to which they are adjacent and the first and third

vertical plates

113 and 115 between the other side plate 116 and the connecting portion 117 define the other mounting position.

Illustratively, the first connecting plate 31 and the second connecting plate 32 are integrally formed, which is convenient for processing and can improve the structural strength of the conductive member.

The junction of first connecting plate 31 and second connecting plate 32 is smooth transition, and this kind of mode can avoid stress concentration, reduces the conductive piece fracture risk.

Because the first support 11 is provided with first location portion, and the second support 12 is provided with second location portion and third location portion, through the combined action of first location portion, second location portion and third location portion, can fix a position the side and the base of battery cell simultaneously to fix the battery cell on the exact position, thereby be convenient for confirm the position of battery cell's tab, in order to guarantee when second connecting plate 32 fixed mounting is in the installation position of first support 11, first connecting plate 31 just in time aligns with the tab, the welding of being convenient for. In this embodiment, the electrical connection of the tab, the conductive member 3 and the bus bar 10 is achieved by laser welding.

In a third aspect, the present embodiment provides a battery assembly. Referring to fig. 12 and 13, the battery assembly provided in this embodiment includes a heating film 4a and two battery cells provided in this embodiment, the heating film 4a being located between the two battery cells, the large surfaces of the two battery cells being in contact with the two surfaces of the heating film 4a, respectively.

It should be understood that the large surface of the battery unit is in contact with the heating film 4a, and that the large surface 211 of the unit cell 21 facing away from the main heat plate is in contact with the heating film 4a, and that the surface of the main heat plate facing away from the unit cell is in contact with the heating film 4 a.

The battery pack provided by the embodiment can realize rapid temperature rise and temperature reduction of the battery due to the battery unit provided by the embodiment, so that the battery pack is convenient for combining the use conditions, and the battery temperature is effectively regulated and controlled, so that the service life and the safety performance of the battery are improved. Meanwhile, the heating film 4a is arranged between the two battery units, so that the heat conduction path and heat loss can be reduced, and the total heating power can be improved.

The heating film 4a is arranged between the two battery units, so that the two batteries can be heated at the same time with high efficiency and high power, and the heating temperature rise rate of the batteries is greatly improved. During heating, little heat is dissipated to the outside of the battery module, so that the heat utilization rate of the heating film 4a is improved; the heating film 4a is in contact with the large surface 211 of the unit cell, the heating area is large, and in the case where the power density of the heating film 4a is constant, the total area of heating is larger, so that the heating power is larger. The heating system has high power and low dissipation, so that the heating rate is high.

The heating film 4a is disposed between two battery cells, and the heating film 4a is in contact with the large surface 211 of the battery cell, the distance between the point farthest from the heating film 4a on the battery cell and the heating film 4a is the thickness of the battery cell, and compared with the scheme in which the heating structure is disposed on the bottom surface or the side surface of the battery cell, the heat conduction path of the battery assembly provided in this embodiment is shorter, the heating efficiency is higher, the temperature gradient is smaller, and the temperature uniformity is higher.

It should be noted that, the arrangement manner of the heating films is not limited to the above one, and for example, one heating film may be disposed between every two unit cells, at this time, the battery assembly includes two heating films and two unit cells, which are alternately disposed at intervals, and the distance between the point farthest from the heating film 4a on the unit cell and the heating film 4a is half the thickness of the unit cell.

The structure of the heating film 4a is a prior art, and will not be described in detail here.

In the present embodiment, the heating film 4a has two surfaces disposed opposite to each other, one of which is in direct contact with the large surface 211 of one unit cell, and the other of which is in indirect contact with the large surface 211 of the other unit cell through the heat conduction plate 132. When the heat transfer plate is located between the heating film 4a and the unit cell, the thickness of the heat transfer plate is negligible.

The heating film 4a is bonded to the large surface 211 of the unit cell with a heat conductive adhesive.

In one embodiment, referring to fig. 12, a side of the heating film 4a near the second bracket 12 is provided with a wire outlet end 41, at least part of the wire outlet end 41 is located at a side of the second bracket 12 far from the first bracket 11, and the wire outlet end 41 is provided with a wire and a connector for achieving serial-parallel connection of the heating films 4a in the plurality of battery packs.

During the type selection, a wire with a larger overcurrent area can be selected. The wire with larger overcurrent area has stronger overcurrent capability, and the wire with stronger overcurrent capability can provide larger power supply input for the heating film 4a, so that the power density of the heating film 4a can be designed larger, thereby improving the heating rate.

Referring to fig. 15, when the number of battery modules is plural, the serial-parallel connection between the heating films 4a in the plural battery modules is realized by a wire, and after the heating films 4a in a single battery module are connected in series-parallel to form a heating system, two or more power supply interfaces 42 are reserved, and the power supply interfaces 42 can be connected with the anode and the cathode of the whole battery system, and can be powered by the battery system, or can be connected with an external power supply, and can be powered by the external power supply.

The heating system is powered by a battery system or an external power supply, and when the power of the heating film 4a is inconsistent, the inconsistent discharge of different batteries is not caused, so that the consistent charge of each battery in the battery system is ensured.

In one embodiment, referring to fig. 7, 12 and 13, the second bracket 12 is provided with a positioning edge 113a and a positioning groove 123; the wire outlet end 41 is bent to form a vertical portion 411 and a transverse portion 412, the vertical portion 411 and the heating film 4a are in the same plane, the transverse portion 412 is located on one side, far away from the first support 11, of the second support 12, an avoidance space is formed by the vertical portion 411 and one side, close to the second support 12, of the heating film 4a, a positioning edge 113a is located in the avoidance space, and the vertical portion 411 is located in the positioning groove 123.

In this embodiment, the positioning edge 113a is a portion of the first vertical plate 113 of the second bracket 12. The number of the wire outlet ends 41 is two, and the two wire outlet ends 41 are arranged at intervals along the width direction of the heating film 4a, wherein the width direction of the heating film 4a is consistent with the length direction of the second bracket 12. The two vertical parts 411 and one side edge of the heating film 4a, which is close to the second bracket 12, form an avoidance space, and the positioning edge 113a is positioned in the avoidance space. The number of the positioning grooves 123 is two, the positioning grooves 123 are arranged on the first vertical plate 113 of the second bracket 12, and the vertical parts 411 are positioned in the positioning grooves 123.

In this embodiment, the wire outlet terminal 41 is integrally formed with the heating film 4 a.

In one embodiment, referring to FIG. 7, the second bracket 12 is provided with tie holes 124 through which the connectors are secured. The connector is illustratively secured to the side of the second bracket 12 remote from the battery cell by a tie.

In a fourth aspect, the present embodiment provides a battery module. Referring to fig. 14 to 19C, the battery module provided in this embodiment includes a first battery unit 2a, a second battery unit 2b, and at least one battery assembly provided in this embodiment, where the battery assembly is located between the first battery unit 2a and the second battery unit 2b, and the first battery unit 2a and the second battery unit 2b are both the battery units provided in this embodiment.

The battery module that this embodiment provided can realize the quick heating up and cooling of battery to be convenient for combine the use working condition, effectively regulate and control battery temperature, thereby improve battery module's life and security performance. Meanwhile, since the first and

second brackets

11 and 12 are small in size and weight, the overall weight of the battery module is small, thereby improving the energy density of the battery module.

Referring to fig. 14 and 16, the battery module further includes an end plate 5 and an insulating plate 6, and through holes are provided at four corners of the end plate 5, aligned with and communicating with the channels of the first and

second brackets

11 and 12. The outer sides of the first battery unit 2a and the last battery unit 2b are respectively provided with an end plate 5 and an insulating plate 6, the end plates 5 are positioned on the outer sides of the insulating plates 6, namely, the end plates 5 are positioned on the sides, far away from the battery components, of the insulating plates 6, that is, the first battery unit 2a, the last battery unit 2b and at least one battery component are positioned between the two insulating plates 6, as shown in fig. 16, the arrow direction N in the drawing is the thickness direction of the battery, and the battery module comprises the end plates 5, the insulating plates 6, the first battery unit 2a, at least one battery component, the last battery unit 2b, the insulating plates 6 and the end plates 5 which are stacked in the thickness direction of the single battery, and after being stacked into groups, the battery module is fixed by long bolts and nuts.

The number of battery packs in the present embodiment is seven by way of example.

The battery module further comprises a bus bar 10 which is arranged at the upper part of the battery frame 1, specifically, the bus bar is welded with the surface of the second connecting plate 32 of the conductive piece 3, which is far away from the first bracket 11, so that the series-parallel connection of the batteries is realized. And a voltage acquisition terminal on the module acquisition wire harness is welded with the busbar to realize voltage acquisition.

Because the heat dissipation of the battery at the end part is faster, the temperature at the two ends of the battery module is lower, and in order to ensure that the battery has higher temperature consistency, the battery module further comprises two auxiliary heating films 4b; one of the auxiliary heating films 4b is located on the side of the first battery cell 2a away from the battery assembly, and the other auxiliary heating film 4b is located on the side of the last battery cell 2b away from the battery assembly.

The auxiliary heating film 4b is located on the side of the insulating plate 6 remote from the end plate 5. Taking the first battery unit 2a as an example, the auxiliary heating film 4b contacts with the large surface 211 of the battery in the first battery unit 2a, the distance between the point on the battery cell farthest from the auxiliary heating film 4b and the auxiliary heating film 4b is the thickness of the battery cell, and as described above, for the battery assembly, the distance between the point on the battery cell farthest from the heating film 4a and the heating film 4a is also the thickness of the battery cell, so that the temperature gradient in the whole battery module is smaller and the temperature uniformity is higher.

In the present embodiment, the structure of the auxiliary heating film 4b is the same as that of the heating film 4 a.

In one embodiment, referring to fig. 15 and 16, the outlet terminal 41 of the auxiliary heating film 4b has a power supply interface 42, and the power supply interface 42 is used for connection with an external power supply, or the power supply interface 42 is used for connection with the positive and negative electrodes of the battery system.

The outlet end 41 of the auxiliary heating film 4b is also provided with a wire and a connector.

The auxiliary heating film 4b has two outlet terminals 41, one of which 41 is connected to the outlet terminal 41 of the heating film 4a adjacent thereto via a wire and a connector, and the other outlet terminal 41 has a connector as a power supply interface 42, and the power supply interface 42 may be connected to the positive and negative electrodes of the entire battery system, may be supplied with power from the battery system, and may be connected to an external power source, and may be supplied with power from the external power source.

Because the battery system or an external power supply is adopted for supplying power, when the power of the heating film 4a and the auxiliary heating film 4b is inconsistent, the discharge inconsistency of different batteries is not caused, and the consistent charge of each battery in the battery system is ensured.

The performance of the battery system is sensitive to temperature variation, and long-time high and low temperature environments and system temperature difference accumulation can affect the service life and performance of the battery and may cause safety problems. Accurate and reliable battery temperature collection is the basis for the operation of the thermal management system.

Therefore, in this embodiment, as shown in fig. 16, the battery module further includes the temperature sensor 7, and the temperature sensor 7 is adhered to the surface of the battery through the heat-conducting glue, so that the temperature of the battery can be directly measured, the temperature measurement delay time is short, and the measurement accuracy is high.

The temperature sensor 7 is directly arranged on the surface of the single battery, so that the real temperature of the battery can be accurately measured in real time, and the service life and safety of the battery module are improved.

In one embodiment, referring to fig. 6, the first bracket 11 is provided with a wire outlet 118, and the wires of the temperature sensor 7 pass through the wire outlet 118.

Illustratively, the outlet hole 118 is disposed at a middle position of the transverse plate 112, and the outlet hole 118 is a U-shaped notch. The wires of the temperature sensor 7 pass through the wire outlet holes 118, and the wire outlet holes 118 can guide the wires of the temperature sensor 7.

In one embodiment, the temperature sensor 7 is connected with the module acquisition harness through a connector to acquire the battery temperature.

The end of the wire of the temperature sensor 7 is provided with a connector, the temperature sensor 7 is connected with a module acquisition wire harness connector 8 through the connector, and a temperature signal is transmitted to a battery system control unit. The temperature sensor 7 is directly adhered to the surface of the single battery, so that the temperature acquisition precision and the time effect are higher, and the accurate battery temperature can be obtained in real time. The temperature sensor 7 is connected with the module collection wiring harness through the connector, and the assembly of the temperature sensor 7 and the assembly and distribution of the module collection wiring harness can be carried out in different procedures, so that the module assembly difficulty is reduced, and the assembly efficiency is improved.

In one embodiment, referring to fig. 17 and 18, the first bracket 11 is provided with a wire harness slot 119, a module collection wire harness is installed in the wire harness slot 119, and the slot wall of the wire harness slot 119 is provided with a clamping protrusion 1161; the battery module further comprises a line card 9, wherein the line card 9 is provided with a clamping hook 91, and the clamping hook 91 is matched with the clamping convex 1161 so as to fixedly install the line card 9 in the notch of the wire harness groove.

Illustratively, the first bracket 11 is provided with two mounting locations, a portion between the two mounting locations forms a wire harness groove 119, specifically, referring to fig. 17, a portion of the transverse plate 112 located between the two mounting locations is a groove bottom of the wire harness groove, the two side plates 116 are two groove walls of the wire harness groove, and the catching protrusion 1161 is provided on a surface of the side plate 116 remote from the mounting location.

Install the module collection pencil in the pencil inslot, then place ply-yarn drill 9 in the notch in pencil inslot for pothook 91 cooperatees with card protruding 1161, thereby utilizes ply-yarn drill 9 to fix the module collection pencil in the pencil inslot.

In one embodiment, the number of the temperature sensors 7 is plural, and the plurality of temperature sensors 7 are respectively arranged at different positions of the battery.

The battery system comprises a plurality of battery modules, and when the battery system works, the positions of different single batteries in the battery modules are different, so that deviation of heat dissipation characteristics can be caused, and the temperature of an electric core in the battery module is finally uneven. Therefore, with the plurality of temperature sensors 7, the plurality of temperature sensors 7 are arranged at different positions of the battery, for example, as shown in fig. 19A to 19C, the temperature sensors may be provided on the upper surface of the unit battery near the first bracket, the lower surface of the unit battery near the second bracket, and the side surface of the unit battery between the upper surface and the lower surface, respectively.

In general, the temperature sensors 7 are disposed at the highest temperature point and the lowest temperature point, respectively, within the battery module to acquire the temperature interval of the entire battery module. The battery management system establishes a proper control strategy (for example, when the battery is heated at a low temperature, the minimum temperature is ensured to reach the working temperature, and when the battery is charged and discharged, the maximum temperature is ensured not to exceed the normal working temperature) according to the acquired maximum temperature and the minimum temperature and by combining the working conditions, thereby being beneficial to prolonging the service life and improving the safety performance of the battery system.

In a fifth aspect, the present embodiment provides a battery, including the battery module provided in the present embodiment.

The battery provided by the embodiment has the advantages that the battery module provided by the embodiment is used, the overall weight of the battery is small, and the safety performance and the energy density are high.

The battery provided in this embodiment can be applied to various types of loading vehicles.

In one embodiment, the battery further comprises a case, and the battery module is disposed in the case. Through setting up battery module in the box, can realize the protection to battery module.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of protection of the application is limited only by the claims that follow.

Claims

1. A battery frame, comprising:

a first bracket;

2. The battery frame according to claim 1, wherein the limit clamping structure includes a first clamping portion and a first clamping mating portion, the first clamping portion is disposed on the first bracket, the first clamping mating portion is disposed on the heat dissipation plate, and the first clamping portion is clamped with the first clamping mating portion, so that the first bracket is fixedly connected with the heat dissipation plate.

3. The battery frame of claim 2, wherein the first clamping portion is a limiting boss, the first clamping mating portion is a limiting hole, and the limiting boss is limited to the limiting hole.

4. The battery frame of claim 3, wherein the limit boss has a positioning surface that abuts against a wall of the limit hole to restrict movement of the heat dissipation plate between the first bracket and the second bracket.

5. The battery frame according to claim 1, wherein the limit clamping structure includes a second clamping portion and a second clamping mating portion, the second clamping portion is disposed on the second bracket, the second clamping mating portion is disposed on the heat dissipation plate, and the second clamping portion is clamped with the second clamping mating portion, so that the second bracket is fixedly connected with the heat dissipation plate.

6. The battery frame according to claim 1, wherein the first bracket is provided with a positioning structure, and/or the second bracket is provided with a positioning structure for positioning the position of the heat dissipation plate.

7. The battery frame according to claim 6, wherein the first bracket is provided with a positioning structure including a positioning boss and a first positioning plate, both of which are provided in the first bracket, and a minimum distance between the positioning boss and a surface of the first positioning plate, which is close to the positioning boss, is adapted to a thickness of the heat dissipation plate.

8. The battery frame according to claim 7, wherein the positioning structure further includes a second positioning plate abutting against a part of a surface of the heat dissipation plate to restrict the heat dissipation plate from moving in a set direction, wherein the set direction is parallel to a length direction of the first bracket.

9. The battery frame of claim 8, wherein the second positioning plate comprises a first sub-positioning plate and a second sub-positioning plate, the first sub-positioning plate and the second sub-positioning plate being disposed opposite each other along a length direction of the first bracket; the heat dissipation plate comprises a heat conduction plate, a first side heat conduction plate and a second side heat conduction plate, wherein the first side heat conduction plate and the second side heat conduction plate are oppositely arranged at two ends of the heat dissipation plate along the set direction, the first side heat conduction plate is in butt joint with the surface, far away from the second sub-positioning plate, of the first sub-positioning plate, and the second side heat conduction plate is in butt joint with the surface, far away from the first sub-positioning plate, of the second sub-positioning plate.

10. The battery frame according to any one of claims 1 to 9, wherein the first bracket is provided with a first positioning portion, the second bracket is provided with a second positioning portion and a third positioning portion, the first positioning portion and the second positioning portion are used for positioning side edges of the unit cells, and the third positioning portion is used for positioning bottom edges of the unit cells.

11. The battery frame according to claim 10, wherein the first positioning portion includes a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface being disposed opposite to each other in a length direction of the first bracket; the second positioning part comprises a third positioning surface and a fourth positioning surface, and the third positioning surface and the fourth positioning surface are oppositely arranged along the length direction of the second bracket; the third positioning part comprises a plurality of supporting plates, and the supporting plates are arranged at intervals along the length direction of the second bracket.

12. A battery unit comprising a single cell and the battery frame of any one of claims 1 to 11, the single cell being fixedly mounted in the battery frame, a large surface of the single cell being in contact with the heat radiation plate.

13. The battery cell of claim 12, further comprising a conductive member fixedly mounted to the first bracket, the tab of the cell being welded to the conductive member.

14. The battery unit according to claim 13, wherein the conductive member includes a first connection plate and a second connection plate, the plate surface of the first connection plate is perpendicular to the plate surface of the second connection plate, the plate surface of the first connection plate is parallel to the extending direction of the tab of the unit battery, so that the tab of the unit battery can be attached to and welded with the plate surface of the first connection plate, and the second connection plate is fixedly mounted on the first bracket and is fixedly connected with the busbar.

15. A battery assembly comprising a heating film and two battery cells according to any one of claims 12 to 14, the heating film being located between two of the battery cells, the large surfaces of both of the battery cells being in contact with the heating film.

16. The battery assembly of claim 15, wherein a side of the heating film adjacent to the second bracket is provided with an outlet terminal, at least a portion of the outlet terminal is located on a side of the second bracket remote from the first bracket, and the outlet terminal is provided with a wire and a connector for serial-parallel connection of the heating films in the plurality of battery assemblies.

17. The battery assembly of claim 16, wherein the second bracket is provided with a locating edge and a locating slot; the wire outlet end is bent to form a vertical portion and a transverse portion, the vertical portion and the heating film are in the same plane, the transverse portion is located at one side, far away from the first support, of the second support, an avoidance space is formed by the vertical portion and one side, close to the second support, of the heating film, the positioning edge is located in the avoidance space, and the vertical portion is located in the positioning groove.

18. A battery module comprising a first battery cell, a last battery cell and at least one battery assembly of any one of claims 15 to 17, the battery assembly being located between the first battery cell and the last battery cell, wherein the first battery cell and the last battery cell are both battery cells of any one of claims 12 to 14.

19. The battery module of claim 18, further comprising two auxiliary heating films; one of the auxiliary heating films is positioned on one side of the first battery unit, which is far away from the battery assembly, and the other auxiliary heating film is positioned on one side of the tail battery unit, which is far away from the battery assembly.

20. The battery module according to claim 19, wherein the auxiliary heating film has the same structure as the heating film.

21. The battery module of claim 19, wherein the outlet end of the auxiliary heating film has a power supply interface for connection with an external power source or for connection with the positive and negative poles of a battery system.

22. The battery module according to any one of claims 18 to 21, further comprising a temperature sensor adhered to a surface of the unit cell by a heat conductive adhesive.

23. The battery module according to claim 22, wherein the first bracket is provided with a wire outlet hole through which a wire of the temperature sensor passes.

24. The battery module of claim 22, wherein the temperature sensor is connected to a module collection harness through a connector.

25. The battery module according to claim 24, wherein the first bracket is provided with a wire harness groove, the module collection wire harness is installed in the wire harness groove, and the groove wall of the wire harness groove is provided with a clamping protrusion;

the battery module further comprises a line card, wherein the line card is provided with a clamping hook which is matched with the clamping protrusion, so that the line card is fixedly installed in the notch of the line beam groove.

26. The battery module according to claim 22, wherein the number of the temperature sensors is plural, and the plurality of the temperature sensors are disposed at different positions of the unit cells, respectively.

27. A battery comprising the battery module of any one of claims 18 to 26.