CN218351602U

CN218351602U - Cell insulating component, battery and battery module

Info

Publication number: CN218351602U
Application number: CN202222789493.4U
Authority: CN
Inventors: 韦丽娟
Original assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-20
Anticipated expiration: 2032-10-21

Abstract

An embodiment of the utility model provides an electricity core insulating elements, battery and battery module belongs to power battery technical field. The cell insulation component is used for insulation of the cell. The battery cell insulating component comprises an insulating component body, the insulating component body is provided with an installation space for installing a battery cell, and two opposite sides of the insulating component body are provided with expansion grooves for expanding the battery cell. An object of the utility model is to provide an electricity core insulating elements, battery and battery module, its assembly efficiency that can improve the battery module and improve electric core and use the inflation back, the problem of the performance of mutual extrusion influence battery between the electric core.

Description

Cell insulating component, battery and battery module

Technical Field

The utility model relates to a power battery field particularly, relates to an electric core insulating elements, battery and battery module.

Background

The casing of traditional battery module generally adopts metallic structure and generally has the electric polarity for avoiding corroding, takes place to be connected for avoiding electric core and casing, consequently need be in order to carry out effectual insulation protection at electric core outside cladding insulating film to need set up insulating buffer pad between two adjacent electric cores and cushion, this kind of mode can lead to battery module's production, assembly process is long, and processing technology increases, and material cost and processing cost are higher. And after the cells are expanded in use, the cells can be mutually extruded to influence the performance of the battery.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric core insulating elements, battery and battery module, its assembly efficiency that can improve the battery module and improve electric core and use the inflation back, the problem of the performance of mutual extrusion influence battery between the electric core.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides an electric core insulating member for the insulation of electric core, including the insulating member body, the insulating member body is provided with and is used for the installation space of electric core, just the both sides that the insulating member body is relative all are provided with the confession the expansion tank that the electric core inflation was used.

In an alternative embodiment, the insulator member body includes a first body and a second body;

the mounting space comprises a first mounting groove arranged on the first body and a second mounting groove arranged on the second body, and the first mounting groove and the second mounting groove are communicated with each other;

the expansion groove is formed in the first body and/or the second body;

the first body and the second body can be respectively installed on two opposite sides of the battery core through the first installation groove and the second installation groove.

In an alternative embodiment, the first body comprises a first connection portion and two first separation portions;

the two first separating parts are arranged on two opposite sides of the first connecting part, a first mounting groove is formed between the two first connecting parts, and the first body can be clamped on one side of the battery cell through the two first separating parts;

the second body comprises a second connecting part and two second separating parts;

the two second separating parts are arranged on two opposite sides of the second connecting part, a second mounting groove is formed between the two second connecting parts, and the second body is clamped on the other side of the battery core through the two second separating parts;

the expansion groove comprises a first groove arranged on the first partition part and a second groove arranged on the second partition part, the first groove penetrates through one side, close to the second partition part, of the first partition part, and the second groove penetrates through one side, close to the second partition part, of the second partition part.

In an alternative embodiment, the first separating portion includes a first upper separating sheet and a first lower separating sheet, the first upper separating sheet and the first lower separating sheet are disposed at an interval on the same side of the first connecting portion and both extend toward the second body, and the first upper separating sheet, the first connecting portion and the first lower separating sheet enclose to form the first groove;

the second separating part comprises a second upper separating sheet and a second lower separating sheet, the second upper separating sheet and the second lower separating sheet are arranged on the same side of the second connecting part at intervals and extend towards the direction of the second body, and the second upper separating sheet, the second connecting part and the second lower separating sheet enclose to form the second groove.

In an alternative embodiment, a heat dissipation gap is disposed between the first partition and the second partition, and the heat dissipation gap is formed at one side of the top of the insulating member body and is communicated with the expansion groove.

In an alternative embodiment, the first body further includes a first supporting portion connected to the first connecting portion and both of the first separating portions;

the second body further comprises a second supporting part connected with the second connecting part and the two second separating parts;

when the battery cell is arranged in the installation space, the bottom wall of the battery cell is abutted to the first supporting part and the second supporting part.

In an alternative embodiment, the first body and the second body are integrally formed, and the two first partitions and the two second partitions are connected in one-to-one correspondence.

In an alternative embodiment, the first body and the second body are formed separately.

In an alternative embodiment, the first body and the second body are identical in structure.

In a second aspect, the present invention provides a battery, which comprises a battery cell and the battery cell insulating member of any one of the foregoing embodiments, wherein the battery cell is disposed in the installation space.

In an optional embodiment, the battery further includes an insulating film, the insulating film is sleeved on the peripheral wall of the electric core, a gap is provided on the insulating film, and the insulating member body is bonded to the peripheral wall of the electric core through the gap.

In an optional embodiment, the battery cell is shaped like a rectangular parallelepiped, the battery cell has a first side wall, a second side wall, a third side wall and a fourth side wall, which are connected in sequence, the first side wall and the third side wall are arranged oppositely, the second side wall and the fourth side wall are arranged oppositely, and the areas of the first side wall and the third side wall are both larger than those of the second side wall and the fourth side wall; the expansion groove is arranged in the area of the insulation member body corresponding to the first side wall and the third side wall.

In a third aspect, the present invention provides a battery module comprising a module housing and at least two batteries as set forth in any of the preceding embodiments, the batteries being disposed within the module housing, and the insulating member body being connected to the module housing; or the like, or, alternatively,

the battery module comprises a module shell and at least two battery core insulating members as described in any one of the previous embodiments, wherein the insulating member bodies are arranged in the module shell side by side and are connected with the module shell.

In an alternative embodiment, the insulating member body is bonded to the module case.

The embodiment of the utility model provides a beneficial effect of electric core insulating elements, battery and battery module includes:

this application is used for installing the installation space of electric core through setting up the insulating member body, and the both sides that the insulating member body is relative all are provided with the inflation groove that supplies the core inflation to use, can install electric core in installation space, can realize the insulation between electric core and the module shell and the insulation between two adjacent electric cores, can save insulating buffer, can also leave out the insulating film even, thereby let the commentaries on classics of battery module join in marriage more simple and convenient, and realization that can be convenient and module frame's being connected. And the setting of inflation groove can let and form between two adjacent electric cores and dodge the space to after electric core uses the inflation, the inflation part of electric core can dodge at the dodge space that forms, thereby can avoid extrudeing the performance that influences electric core each other between two adjacent electric cores, also can avoid battery module or electric core to damage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

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

fig. 2 is a schematic cross-sectional view of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an explosion structure of a battery module according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an explosion structure of a battery according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another battery provided in an embodiment of the present invention;

fig. 6 is a schematic view of a third structure of a battery according to an embodiment of the present invention.

100-cell insulation member; 110-an insulating member body; 111-installation space; 113-an expansion tank; 115-a first body; 117-a second body; 119-a first mounting groove; 121-a second mounting groove; 123-a first connection; 125-a first partition; 127-a second connection; 129-a second partition; 131-a first groove; 133-a second slot; 135-a first upper separator sheet; 137-a first lower separator; 139-a second upper separator; 141-a second lower separator; 143-heat dissipation notches; 145-a first support; 147-a second support; 300-a battery; 310-electric core; 311-a first side wall; 313-a second sidewall; 315-third side wall; 317-a fourth side wall; 330-an insulating film; 331-notch; 500-a battery module; 510-module housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Applicants have discovered that after use, the cell typically expands outwardly from both sides of the large sidewall area. And in order to make the installation that electric core can be stable in the module casing when the assembly of battery module to occupation space volume relatively is less, generally can support a plurality of electric cores through the mode of big face butt and arrange in the module casing tightly, in order to avoid the activity of electric core in the module box. But can cause electric core inflation because reasons such as temperature rise after the battery uses, the swell can appear even along with the increase of live time now, and because the influence of cuboid electricity core structure, the inflation of electricity core and swell generally all can take place on the big face, and will lead to mutual extrusion between the adjacent electricity core after all electricity core inflation or swell, especially extrusion between two electricity cores of both sides and the end plate of module casing is more serious, can lead to the performance of battery to receive the influence, the explosion-proof valve that appears the electricity core triggers and module casing both ends end plate breaks away from the problem that leads to battery module inefficacy even.

Referring to fig. 1, fig. 2 and fig. 3, in order to solve the above problem, the present embodiment provides a battery 300 package, and the battery 300 package may be used in power consumption settings of an electric vehicle, an energy storage cabinet, and the like. The battery 300 includes at least one battery module 500. The battery module 500 includes a module case 510 and at least two cells 300, and the cells 300 are sequentially arranged in the cell 300 case. The battery 300 includes a battery cell 310 and an insulating member disposed at the periphery of the battery cell 310. The insulating member may improve the problem of the cell 310 swelling or bulging from pressing against each other.

In the present embodiment, the cell insulation member 100 includes an insulation member body 110, the insulation member body 110 is provided with an installation space 111 for installing the cell 310, and two opposite sides of the insulation member body 110 are provided with expansion grooves 113 for expanding the cell 310.

This embodiment is used for installing the installation space 111 of electric core 310 through setting up insulating member body 110, and the both sides that insulating member body 110 is relative all are provided with the inflation groove 113 that supplies electric core 310 inflation to use, can install electric core 310 in installation space 111, can realize the insulation between electric core 310 and the module shell and the insulation between two adjacent electric core 310, can save insulating buffer, can also omit insulating film 330 even, thereby let the commentaries on classics of battery module 500 join in marriage more simple and convenient, and realization and module frame that can be convenient are connected. Due to the arrangement of the expansion groove 113, an avoidance space can be formed between two adjacent battery cells 310, so that after the battery cells 310 are expanded when used, the expansion part of the battery cells 310 can avoid the avoidance space, thereby avoiding the mutual extrusion between the two adjacent battery cells 310 from affecting the performance of the battery cells 310, and also avoiding the damage of the battery module 500 or the battery cells 310.

Referring to fig. 4 to fig. 6, in the present embodiment, the battery cell 310 includes a bottom wall, and a first sidewall 311, a second sidewall 313, a third sidewall 315, and a fourth sidewall 317 enclosing the bottom wall. The first sidewall 311 is disposed opposite to the third sidewall 315, and the second sidewall 313 is disposed opposite to the fourth sidewall 317. And the first sidewall 311 and the third sidewall 315 each have a larger area than the second sidewall 313 and the fourth sidewall 317.

Referring to fig. 1-4, in the present embodiment, the insulation member body 110 includes a first body 115 and a second body 117. The installation space 111 includes a first installation groove 119 provided to the first body 115 and a second installation groove 121 provided to the second body 117. An expansion slot 113 is formed in the first body 115 and the second body 117. The first body 115 may be mounted on one side of the second side wall 313 of the battery cell 310 through the first mounting groove 119 and partially extend to the first side wall 311 and the third side wall 315 of the battery cell 310, the second body 117 may be mounted on one side of the fourth side wall 317 of the battery cell 310 through the second mounting groove 121 and partially extend to one sides of the first side wall 311 and the third side wall 315 of the battery cell 310, and the expansion groove 113 is disposed in regions of the first body 115 and the second body 117 corresponding to the first side wall 311 and the second side wall 313.

When the battery 300 is assembled to form a module, the insulating member bodies 110 of the two batteries 310 are abutted against each other and connected with the module frame, so that the expansion grooves 113 of the two adjacent batteries 300 form an avoiding space between the two batteries 300, and the battery cells 310 of the batteries 300 can be used when expanding, thereby avoiding the mutual extrusion of the battery cells 310 of the two adjacent batteries 300 due to expansion and swelling. And the insulating member body 110 may also realize insulation between two adjacent battery cells 310 and insulation between the battery cells 310 and the casing, and omit providing an insulating buffer plate between two adjacent batteries 300.

In the present embodiment, the first body 115 includes a first connection portion 123 and two first partition portions 125. The two first separating portions 125 are disposed at two opposite sides of the first connecting portion 123, a first mounting groove 119 is formed between the two first connecting portions 123, and the first body 115 is clamped to one side of the second sidewall 313 of the battery cell 310 through the two first separating portions 125. The first connecting portion 123 corresponds to the second sidewall 313 of the battery cell 310, and the two first separating portions 125 respectively extend to the first sidewall 311 and the third sidewall 315 of the battery cell 310, so as to be clamped on the battery cell 310, and thus, the second sidewall 313 of the battery cell 310 and the first sidewall 311 and the third sidewall 315 of the battery cell 310 can be partially wrapped. The second body 117 includes a second connection part 127 and two second partition parts 129. The two second separating parts 129 are disposed at opposite sides of the second connecting part 127, and a second mounting groove 121 is formed between the two second connecting parts 127. The second body 117 is mounted on one side of the fourth side wall 317 of the battery cell 310 through a second mounting groove, the second connecting portion 127 corresponds to the fourth side wall 317 of the battery cell 310, and the two second separating portions 129 respectively extend to the first side wall 311 and the third side wall 315 of the battery cell 310, so that the second body is clamped on the battery cell 310, and the fourth side wall 317 of the battery cell 310 and the first side wall 311 and the third side wall 315 of the battery cell 310 can be partially wrapped. The expansion tank 113 includes a first tank 131 provided in the first partition 125 and a second tank 133 provided in the second partition 129, and the first tank 131 penetrates the first partition 125 on the side close to the second partition 129 and the second tank 133 penetrates the second partition 129 on the side close to the second partition 129.

When the batteries 300 are assembled into a module, the first partition 125 and the first partition 125 of two adjacent batteries 300 abut against each other, and the second partition 129 abut against each other, so that the expansion groove 113 formed by the first groove 131 and the second groove 133 can prevent the cells 310 from being pressed against each other when the batteries 300 are stably mounted in the module case 510.

Referring to fig. 1 to 4, in the present embodiment, the first separating portion 125 includes a first upper separating sheet 135 and a first lower separating sheet 137, and the first upper separating sheet 135 and the first lower separating sheet 137 are disposed at an interval on the same side of the first connecting portion 123 and both extend toward the second body 117. The first upper separator 135, the first connection portion 123, and the first lower separator 137 enclose a first groove 131. The second separating portion 129 includes a second upper separating sheet 139 and a second lower separating sheet 141, and the second upper separating sheet 139 and the second lower separating sheet 141 are disposed at an interval on the same side of the second connecting portion 127 and both extend toward the first body 115. The second upper separator 139, the second connecting portion 127, and the second lower separator 141 enclose a second groove 133.

The first separator 125 is provided as the first upper separator 135 and the first lower separator 137 which are spaced apart from each other, and the second separator 129 is provided as the second upper separator 139 and the second lower separator 141 which are spaced apart from each other, so that the first upper separator 135 and the second upper separator 139 can correspond to the tops of the first sidewall 311 and the third sidewall 315 of the cell 310, and the first lower separator 137 and the second lower separator 141 can correspond to the bottoms of the first sidewall 311 and the third sidewall 315 of the cell 310, so that when the battery module 500 is assembled and formed, the separation and support can be formed from the upper and lower portions, so that the battery 300 can be stably mounted in the module frame, and the substantial parallelism between the two adjacent cells 310 can be ensured. The cell 310 is prevented from being pressed to be inclined.

In the present embodiment, a heat dissipation notch 143 is disposed between the first partition 125 and the second partition 129, and the heat dissipation notch 143 is formed at one side of the top of the insulation member body 110 and is communicated with the expansion groove 113.

The heat dissipation notch 143 is provided in this embodiment, so that heat accumulated between the two batteries 300 can be conducted out through the heat dissipation notch 143, and thus, heat can be accumulated in the expansion groove 113. And the first side wall 311 and the third side wall 315 of the battery cell 310 may be partially exposed to the air, and the heat dissipation capability of the battery cell 310 may also be improved.

Referring to fig. 5 and 6, in the present embodiment, the first body 115 further includes a first supporting portion 145 connected to the first connecting portion 123 and the two first separating portions 125. The second body 117 further includes a second supporting portion 147 connected to both the second connecting portion 127 and the two second separating portions 129. When the cell 310 is mounted in the mounting space 111, the cell 310 is supported by the first support portion 145 and the second support portion 147, and the bottom wall of the cell 310 abuts against the first support portion 145 and the second support portion 147. Thereby can realize the insulation between electric core 310 bottom and the module casing 510 bottom through first supporting part 145 and second supporting part 147 to can omit the assembly of bottom insulation board, make the assembly of module more convenient.

Of course, in consideration of the processing cost of the first body 115 and the second body 117, the insulation between the bottom of the battery cell 310 and the module frame may be achieved by laying an insulating plate on the bottom of the module case 510 without providing the first supporting portion 145 and the second supporting portion 147 on the first body 115 and the second body 117.

Because, when the battery cell 310 is swelled, the deformation of the battery cell 310 is large, and at this time, the distance between two adjacent battery cells 310 needs to be large enough to achieve the insulation between two adjacent battery cells 310. That is, the thicknesses of the first connection portion 123 and the second connection portion 127 are thick enough to meet the avoidance and insulation requirements when the adjacent battery cells 310 are all swelled. The applicant has found that the occurrence probability of swelling of the battery cell 310 is low under the condition that the battery 300 pack is normally used, and this way can reduce the energy density of the battery module 500, increase the weight of the battery module 500 and increase the production cost.

Referring to fig. 2, fig. 4, fig. 5 and fig. 6, in order to solve the above problem, in the present embodiment, the battery 300 further includes an insulating film 330, the insulating film 330 is disposed on the outer peripheral wall of the battery cell 310, and the insulating member is disposed outside the insulating film 330 and is bonded to the battery cell 310.

The electric core 310 can be further insulated by the arrangement, so that when the electric core 310 bulges, the insulation between two adjacent electric cores 310 can be realized by the insulating film 330, the weight and the thickness of the insulating film 330 are both relatively thin, the energy density of the electric battery module 500 cannot be greatly influenced, and the cost of the insulating film 330 is reduced.

The applicant has also found that the insulating film 330 is typically a roll stock, one surface of the insulating film 330 having a tackiness to adhere to the outer periphery of the cell 310, and the other surface of the insulating film 330 typically containing an amount of silicone oil to facilitate peeling of the insulating film 330 from the roll stock. If the insulating film 330 completely covers the outer periphery of the battery cell 310, the silicone oil surface of the insulating film 330 may affect the adhesion of the insulating member when it is bonded to the insulating member, and the problem of adhesive failure may easily occur when an impact is applied.

In order to solve the above problem, in the present embodiment, the insulating film 330 is provided with a notch 331 in an area corresponding to the second sidewall 313 and the fourth area of the cell 310, so that the first connection portion 123 and the second connection portion 127 can be adhered to the outer circumferential wall of the metal casing of the cell 310 through the notch 331.

In the present embodiment, the first connection part 123 and the second connection part are respectively connected to the module case 510 by means of adhesion.

During assembly, the insulating member may be mounted on the battery cell 310, and then the battery 300 may be integrally mounted in the module case 510. Of course, a plurality of insulating members may be first installed in the module housing 510, so as to form a plurality of insertion slots, and then the battery cells 310 are inserted into the insulating members in a one-to-one correspondence manner.

Referring to fig. 4 and 5, in the present embodiment, the first body 115 and the second body 117 are formed separately. The first body 115 and the second body 117 are identical in structure.

The separate molding facilitates the manufacture of the insulating member and the assembly at opposite sides of the battery cell 310.

Further, the lengths of the first upper separator 135, the first lower separator 137, the second upper separator 139, and the second lower separator 141 are less than one-half of the length of the battery cell 310 and greater than one-third of the length of the battery cell 310. Thus, when the first body 115 and the second rod body are assembled on both sides of the battery cell 310 in the length direction, heat dissipation gaps 143 are formed between the first upper separator 135 and the second upper separator 139 and between the first lower separator 137 and the second lower separator 141, so that heat is conducted out. And can provide sufficient support between two cells 310 to prevent the cells 310 from being deformed by an external force.

In the present embodiment, the first body 115 and the second body 117 are made of plastic injection molding, and the wall thickness of the first body 115 and the second body 117 is 2mm. Because the hardness of plastics is lower than the metal relatively, when battery module 500 receives external force impact, can form the buffering between electric core 310 to battery module 500's damage can be avoided.

Of course, the wall thickness of the first body 115 and the second body 117 may also be set according to the expansion amount of the battery cell 310.

Referring to fig. 6, in other embodiments of the present application, the first body 115 and the second body 117 are integrally formed, and the first lower separator 137 and the second lower separator 141 are coupled to each other or the first support 145 and the second support 147 are coupled to each other. Thus, the number of accessories can be reduced, and the assembly is more convenient.

To sum up, the embodiment of the present invention provides a cell insulation member 100, battery 300 and battery module 500, which has the following beneficial effects:

this application is used for installing electric core 310's installation space 111 through setting up insulating member body 110, and the both sides that insulating member body 110 is relative all are provided with the inflation groove 113 that supplies electric core 310 inflation to use, can install electric core 310 in installation space 111, can realize the insulation between electric core 310 and the module shell and the insulation between two adjacent electric core 310, can save insulating buffer, can also omit insulating film 330 even, thereby let the commentaries on classics of battery module 500 join in marriage more simple and convenient, and realization that can be convenient and module frame's being connected. And the setting of inflation groove 113 can let and form the space of dodging between two adjacent electric cores 310 to after electric core 310 uses the inflation, the inflation part of electric core 310 can dodge at the space of dodging that forms, thereby can avoid squeezing each other between two adjacent electric cores 310 and influence the performance of electric core 310, also can avoid battery module 500 or electric core 310 to damage.

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

Claims

1. A battery cell insulating component for insulating a battery cell (310), which is characterized by comprising an insulating component body (110), wherein the insulating component body (110) is provided with an installation space (111) for installing the battery cell (310), and two opposite sides of the insulating component body (110) are provided with expansion grooves (113) for expanding the battery cell (310).

2. The cell insulation member of claim 1, wherein the insulation member body (110) comprises a first body (115) and a second body (117);

the mounting space (111) comprises a first mounting groove (119) arranged on the first body (115) and a second mounting groove (121) arranged on the second body (117), and the first mounting groove and the second mounting groove are communicated with each other;

the expansion slot (113) is formed in the first body (115) and/or the second body (117);

the first body (115) and the second body (117) are respectively installed on two opposite sides of the battery cell (310) through the first installation groove (119) and the second installation groove (121).

3. The cell insulation member according to claim 2, wherein the first body (115) comprises a first connection portion (123) and two first separation portions (125);

the two first separating parts (125) are arranged on two opposite sides of the first connecting part (123), a first mounting groove (119) is formed between the two first connecting parts (123), and the first body (115) can be clamped on one side of the battery cell (310) through the two first separating parts (125);

the second body (117) comprises a second connection portion (127) and two second partition portions (129);

the two second partition parts (129) are arranged on two opposite sides of the second connecting part (127), the second mounting groove (121) is formed between the two second connecting parts (127), and the second body (117) is clamped on the other side of the battery cell (310) through the two second partition parts (129);

the expansion tank (113) includes a first tank (131) provided to the first partition (125) and a second tank (133) provided to the second partition (129), and the first tank (131) penetrates through the first partition (125) on the side close to the second partition (129), and the second tank (133) penetrates through the second partition (129) on the side close to the second partition (129).

4. The cell insulation member according to claim 3, wherein the first separation part (125) comprises a first upper separation sheet (135) and a first lower separation sheet (137), the first upper separation sheet (135) and the first lower separation sheet (137) are arranged at intervals on the same side of the first connection part (123) and extend towards the direction of the second body (117), and the first upper separation sheet (135), the first connection part (123) and the first lower separation sheet (137) enclose to form the first groove (131);

the second separating part (129) comprises a second upper separating sheet (139) and a second lower separating sheet (141), the second upper separating sheet (139) and the second lower separating sheet (141) are arranged on the same side of the second connecting part (127) at intervals and extend towards the direction of the second body (117), and the second upper separating sheet (139), the second connecting part (127) and the second lower separating sheet (141) enclose to form the second groove (133).

5. The cell insulation member according to claim 3, wherein a heat dissipation notch (143) is provided between the first partition (125) and the second partition (129), and the heat dissipation notch (143) is formed at one side of the top of the insulation member body (110) and is communicated with the expansion groove (113).

6. The cell insulation member according to claim 3, wherein the first body (115) further comprises a first support portion (145) connected to the first connection portion (123) and both of the first partition portions (125);

the second body (117) further comprises a second supporting portion (147) connected to the second connecting portion (127) and both of the second separating portions (129);

when the battery cell (310) is mounted in the mounting space (111), the bottom wall of the battery cell (310) is abutted against the first supporting part (145) and the second supporting part (147).

7. The cell insulation member according to any of claims 3 to 6, wherein the first body (115) and the second body (117) are integrally formed, and the two first partitions (125) and the two second partitions (129) are connected in a one-to-one correspondence.

8. The cell insulation member according to any of claims 3 to 6 wherein the first body (115) and the second body (117) are formed separately.

9. The cell insulation member of claim 8, wherein the first body (115) and the second body (117) are identical in structure.

10. A battery comprising a cell (310) and the cell insulating member of any one of claims 1 to 9, the cell (310) being disposed in the mounting space (111).

11. The battery according to claim 10, further comprising an insulating film (330), wherein the insulating film (330) is sleeved on the peripheral wall of the battery core (310), a notch (331) is formed in the insulating film (330), and the insulating member body (110) is bonded to the peripheral wall of the battery core (310) through the notch (331).

12. The battery according to claim 10, wherein the battery cell (310) is rectangular parallelepiped, the battery cell (310) has a first side wall (311), a second side wall (313), a third side wall (315) and a fourth side wall (317) which are connected in sequence, the first side wall (311) and the third side wall (315) are oppositely arranged, the second side wall (313) and the fourth side wall (317) are oppositely arranged, and the areas of the first side wall (311) and the third side wall (315) are larger than the areas of the second side wall (313) and the fourth side wall (317); the expansion groove (113) is provided in a region of the insulation member body (110) corresponding to the first sidewall (311) and the third sidewall (315).

13. A battery module, characterized in that the battery module comprises a module case (510) and at least two batteries according to any one of claims 10 to 12, the batteries being disposed in the module case (510), and the insulative member body (110) being connected with the module case (510); or the like, or, alternatively,

the battery module comprises a module housing (510) and at least two cell insulation members according to any one of claims 1 to 9, the insulation member bodies (110) being arranged side by side within the module housing (510) and both being connected to the module housing (510).

14. The battery module according to claim 13, wherein the insulative member body (110) is bonded to the module case (510).