CN220585399U - Battery module and battery pack - Google Patents

Abstract

The disclosure provides a battery module and a battery pack, and relates to the technical field of batteries. The battery module includes a structural adhesive, a support, and a plurality of electrical cells. The plurality of electric cores are stacked to form electric core components, the structural adhesive is filled between the adjacent electric cores, and the supporting pieces are connected to two ends of the electric core components; the support piece is provided with a clamping part and a positioning part, and the clamping part is used for transferring the battery cell assembly. The positioning part is used for being clamped with the box body, and the battery module is simple in structure, convenient to assemble and capable of improving assembly efficiency.

Description

Battery module and battery pack

Technical Field

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

Background

The existing battery cell module is generally provided with an end plate and a side plate, wherein the end plate of the battery cell module is provided with a fixing hole matched with the box body, and the battery cell module is fixedly connected with the box body of the battery pack through bolts penetrating through the fixing hole. The mode is provided with a plurality of assembled parts, the assembly process is complex, and the efficiency is low.

Disclosure of Invention

The utility model aims to provide a battery module and a battery pack, which can improve assembly efficiency and reduce the number of parts in assembly.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the present utility model provides a battery module comprising:

the battery cells are stacked to form a battery cell assembly;

the structural adhesive is filled between the adjacent electric cores to connect the electric cores;

the support piece is connected to two ends of the battery cell assembly; the supporting piece is provided with a clamping part so as to facilitate the transfer of the battery cell assembly; the support piece is provided with a positioning part, and the positioning part is used for being clamped with the box body.

In an alternative embodiment, the clamping part comprises a protruding rib and a clamping plane, wherein the protruding rib and the clamping plane are arranged on the supporting piece, the clamping plane is used for clamping by a clamp, and the protruding rib is used for abutting against the clamp.

In an alternative embodiment, a limit part is arranged on one side of the support piece, which faces the battery cell assembly.

In an alternative embodiment, the supporting member is made of an insulating material, and the supporting member is provided with an output electrode connecting portion.

In an alternative embodiment, the device further comprises a wire harness collecting assembly, wherein the wire harness collecting assembly comprises a plastic sucking tray, a connecting row and a collecting wire which are integrally connected; the wire harness acquisition assembly is arranged at the top of the battery cell assembly.

In an alternative embodiment, the top of the electric core is provided with an explosion-proof valve, the wire harness collecting assembly is provided with an avoidance hole, and the avoidance hole and the explosion-proof valve are correspondingly arranged.

In an alternative embodiment, mica sheets are arranged between adjacent electric cores.

In an alternative embodiment, the mica sheet is provided with an air duct.

In a second aspect, the present utility model provides a battery pack comprising a case and a battery module according to any one of the preceding embodiments, the battery module being disposed within the case.

In an alternative embodiment, the case body is provided with a vent hole, and the vent hole and a gap between adjacent battery cells are correspondingly arranged.

The beneficial effects of the embodiment of the utility model include:

according to the battery module provided by the embodiment of the utility model, the battery cells are fixed by the structural adhesive, the two ends of the battery cell assembly are respectively provided with the supporting pieces, and the clamping parts are arranged on the supporting pieces, so that the battery cell assembly can be conveniently and directly moved into the box body of the battery pack, and the transfer operation is convenient. Meanwhile, the supporting piece is provided with a positioning part, and the positioning part is convenient to be clamped with the box body. The fixing parts such as bolts are omitted, the assembly efficiency of the battery module can be improved, the number of assembly parts is reduced, and the assembly process is simpler.

The battery pack provided by the embodiment of the utility model comprises the box body and the battery module, wherein the box body is clamped with the battery module, the assembly efficiency is high, the number of assembly parts is reduced, and the assembly process is simpler.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic structural view of a support member for a battery module according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a structure of a clamp for use with a support according to an embodiment of the present utility model;

fig. 4 is a schematic structural view illustrating another view of a support member of a battery module according to an embodiment of the present utility model;

fig. 5 is a schematic view of an installation scene structure of a harness collection assembly of a battery module according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a mica sheet of a battery module according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a battery pack according to an embodiment of the present utility model;

fig. 8 is an exploded view of a battery pack according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of a lower case of a battery pack according to an embodiment of the present utility model.

Icon: a 100-cell module; 110-cell; 120-structural adhesive; 130-a support; 131-clamping part; 133-projecting ribs; 135-clamping a plane; 137-positioning part; 138-a limit part; 139-an output pole connection; 1391—grooves; 1393-nut; 140-a wire harness acquisition assembly; 141-a plastic suction tray; 143-connection rows; 145-acquisition line; 147-avoiding holes; 150-mica sheets; 151-air duct; 200-battery pack; 210-a box body; 211-ventilation holes; 213-an upper housing; 215-a lower housing; 220-a box panel; 230-handle; 300-clamping; 310-clamping part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model 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 utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its 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 utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, the present embodiment provides a battery module 100, which includes a structural adhesive 120, a supporting member 130 and a plurality of electrical cells 110. The plurality of battery cells 110 are stacked to form a battery cell 110 assembly, and the structural adhesive 120 is filled between the adjacent battery cells 110 to fixedly connect the plurality of battery cells 110. The supporting pieces 130 are connected to two ends of the cell 110 assembly; the supporting member 130 is provided with a clamping part 131 to facilitate the transfer of the cell 110 assembly. The supporting member 130 is provided with a positioning portion 137, so as to be conveniently fastened and fixed with the case 210 (see fig. 8). The battery module 100 has a simple structure, is convenient to assemble, can reduce the number of parts and assembly procedures in the assembly process, and improves the assembly efficiency.

Alternatively, the positioning portion 137 is a positioning groove or a positioning block provided on the support 130. One of the case 210 and the supporting member 130 is provided with a positioning groove, the other is provided with a positioning block, and the positioning block can be clamped into the positioning groove to realize the clamping connection of the case 210 and the supporting member 130, thereby realizing the fixed connection of the battery module 100 and the case 210. In this embodiment, the supporting member 130 is formed with a positioning block, and the positioning block adopts a protruding structure formed on the surface of the supporting member 130. Positioning grooves are formed in corresponding positions of the box 210 to achieve clamping and fixing of the supporting piece 130 and the box 210. The arrangement is convenient for assembly, positioning, clamping and fixing, and is beneficial to improving the structural strength of the supporting piece 130 and prolonging the service life. Of course, in some embodiments, a positioning groove may be formed on the support 130, and a positioning block corresponding to the positioning groove may be disposed on the case 210. Alternatively, in some embodiments, the supporting member 130 is provided with a positioning groove and a positioning block, and the case 210 is provided with a positioning groove and a positioning block, where the positioning groove on the case 210 and the positioning block on the supporting member 130 are correspondingly disposed, and the positioning block on the case 210 and the positioning groove on the supporting member 130 are disposed opposite to each other, which can achieve similar technical effects, and is not limited herein specifically.

Referring to fig. 3, the clamping portion 131 includes a protruding rib 133 disposed on the support 130 and a clamping plane 135, wherein the clamping plane 135 is used for clamping the clamp 300, and the protruding rib 133 is used for abutting against the clamp 300. Alternatively, the protruding ribs 133 and the clamping plane 135 may define a clamping groove structure for clamping with the clamp 300. It can be appreciated that the cross-sectional shape of the clamping groove is adapted to the cross-sectional shape of the clamp 300, so that the clamp 300 extends into the clamping limiting groove, the clamp 300 and the clamping groove are clamped and fixed, and the support 130 can be grasped, so that the battery module 100 is transferred. For example, the battery module 100 is transferred into the case 210 of the battery pack 200 by the jig 300. It will be appreciated that the positioning portion 137 may also employ protruding ribs 133 on the surface of the support 130.

It should be noted that the fixture 300 is used with the support 130. The clamp 300 has a clamping portion 310, the cross-sectional shape of the clamping portion 310 being sized to accommodate the shape and size of the clamping plane 135. In some embodiments, the clamping portion 131 may only include protruding ribs 133 protruding from the support 130, similar to a lug structure, where the clamp 300 is clamped or abutted or clamped to achieve the transfer of the battery module 100, which is not limited herein.

Referring to fig. 4, in this embodiment, the supporting member 130 is made of an insulating material, so that insulating contact with the battery cell 110 can be achieved, additional insulating members are omitted for isolation, the structure is simpler, and the number of assembly parts is smaller. The support 130 is provided with an output pole connection 139. The output pole connection 139 is used to mount a bus bar that is electrically connected to the poles of the cell 110 as the electrode output of the cell 110 assembly. Optionally, the output electrode connecting portion 139 is provided with a groove 1391 for accommodating a busbar to limit the busbar, and the provision of the groove 1391 can reduce the overall height of the battery module 100. Further, the output pole connecting portion 139 is provided with a fixing hole or a pre-buried nut 1393, and the fixing hole or the pre-buried nut 1393 can be fixedly connected with the busbar through a bolt, so that the installation is convenient. Of course, the output pole connection portion 139 and the bus bar may be fixedly connected by clamping, riveting, bonding, or other methods.

A limiting part 138 is arranged on one side, facing the battery cell 110 assembly, of the supporting piece 130, and the limiting part 138 is used for propping against the battery cell 110 to fix the battery cell 110. It can be appreciated that the battery module 100 may include two or more rows of the battery cell 110 assemblies, and the limiting portion 138 is located between two adjacent rows of the battery cell 110 assemblies, so as to limit the battery cell 110 assemblies. The limiting portion 138 may be a continuous or spaced bump structure.

The supporting member 130 may be formed integrally, for example, by extrusion molding, and has the advantages of convenient manufacture, low cost, high structural strength, reliable structure and convenient assembly. Due to the adoption of the supporting piece 130, the profile end plate, the side plate and the lug fixing seat in the conventional battery module 100 can be omitted, the structure is simple, the cost is low, the assembly efficiency is high, the volume, the weight and the like of the battery module 100 can be reduced, the space utilization rate of the battery pack 200 is improved, and the energy density of the battery pack 200 is improved.

Referring to fig. 5, the battery module 100 further includes a harness collecting assembly 140, and the harness collecting assembly 140 includes a suction tray 141, a connection row 143, and a collecting wire 145 integrally connected; the harness acquisition assembly 140 is disposed on top of the cell 110 assembly. Optionally, the wire harness collecting assembly 140 adopts a plastic-sucking integrated design, integrates the plastic-sucking tray 141, the connecting row 143 and the collecting line 145 together, does not need to independently perform CCS assembly installation on the battery module 100, and can improve production efficiency by matching with CTP technology. And in the integrated design, the CCS formed by the plastic sucking tray 141 can replace a plurality of materials such as a wire harness isolation plate, an FPC (flexible circuit board) and an upper cover in the traditional busbar, so that the utilization rate of the height space in the battery pack 200 is effectively improved, and the energy density of the battery pack 200 is improved.

The top of electric core 110 is equipped with the explosion-proof valve, and pencil collection assembly 140 is equipped with dodges hole 147, dodges hole 147 and explosion-proof valve and correspond the setting. It can be appreciated that the avoidance hole 147 is formed in the plastic sucking tray 141 to avoid the position of the explosion-proof valve, which is beneficial to balancing the air pressure in the battery cell 110 when the battery cell 110 is in thermal runaway, thereby reducing the risk brought by the thermal runaway of the battery cell 110 and improving the safety.

Referring to fig. 6, optionally, a mica sheet 150 is disposed between adjacent cells 110, and an air duct 151 is disposed on the mica sheet 150. The mica sheet 150 contacts the battery cell 110, increasing the heat dissipation area, and facilitating the heat generated by the battery cell 110 to be conducted away. The mica air duct 151 can be used as a heat dissipation channel to improve heat dissipation efficiency. The mica sheet 150 is coated with the structural adhesive 120, which can further fix the battery cell 110 during the transferring process of the battery module 100, so as to prevent the accidental scattering of the battery cell 110. In addition, the mica sheets 150 serve as excellent fireproof materials, and can effectively prevent thermal diffusion between the cells 110 when thermal runaway occurs in the cells 110.

Referring to fig. 7 to 9, the embodiment of the utility model further provides a battery pack 200, which includes a case 210 and the battery module 100 described above, wherein the battery module 100 is disposed in the case 210. Specifically, the case 210 includes a lower case 215, an upper case 213, and a case panel 220, which are connected to form an accommodating space for accommodating the battery module 100. The harness acquisition assembly 140 is located on the side of the cell 110 assembly that faces the upper housing 213. The lower case 215 is provided with a positioning groove into which the positioning block on the support 130 can be inserted, thereby achieving the fixed connection of the battery module 100 and the case 210. The handle 230 is provided on the case panel 220 to facilitate the lifting and transfer of the battery pack 200.

The case 210 is provided with a vent hole 211, and the vent hole 211 is disposed corresponding to the gap between the adjacent cells 110. In this embodiment, the upper housing 213 is provided with a ventilation hole 211, and the ventilation hole 211 corresponds to the air channel 151 on the mica sheet 150, so as to improve ventilation effect and heat dissipation efficiency.

The battery pack 200 can be grouped by adopting CTP technology, and the assembly process is as follows:

the battery cell 110 is fixed by filling the structural adhesive 120 between the battery cells 110, so as to form a battery cell 110 assembly. The structural adhesive 120 may be foamed silica gel. The battery cells 110 are bonded by the structural adhesive 120, so that enough shearing force can be provided, and the battery cells 110 are ensured not to generate relative displacement in the process of transferring. The supporting members 130 are disposed at two ends of the cell 110 assembly, and can shape and fix the cell 110 assembly. The shaped battery module 100 is transferred into the case 210 using the jig 300 mated with the support 130. The positioning blocks on the supporting piece 130 and the positioning grooves on the cross beam of the lower shell 215 are clamped and fixed, so that complicated steps of adopting bolt connection are avoided, the assembly efficiency is high, the cost is low, and the space utilization rate of the battery pack 200 is improved.

In summary, the battery module 100 and the battery pack 200 provided by the embodiments of the present utility model have the following beneficial effects:

the battery module 100 adopts the extrusion molding support 130, has the functions of limiting and shaping the battery cell 110, and simultaneously omits the arrangement of the end plate, the side plate and the lug fixing seat, and has the advantages of simple structure and low cost. The supporting piece 130 is provided with the positioning part 137, the positioning part 137 is clamped with the box 210, so that the bolt connection is omitted, the number of assembly parts is reduced, and the assembly efficiency is high. Through the pencil collection assembly 140 that integrates of design, the assembly of being convenient for saves material, improves efficiency, promotes the space utilization of battery package 200, and then improves the energy density of battery package 200. By providing the mica air duct 151, the heat dissipation effect and safety of the battery module 100 are improved.

The battery pack 200 provided by the embodiment of the utility model adopts the battery module 100, so that the material is saved, the cost is reduced, the structure is simplified, the assembly process is simplified, the assembly efficiency is improved, the production efficiency and the space utilization rate of the battery pack 200 are improved, and the energy density and the heat dissipation performance of the battery pack 200 are improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A battery module, comprising:

the battery comprises a plurality of battery cells (110), wherein the battery cells (110) are stacked to form a battery cell assembly;

the structural adhesive (120) is filled between the adjacent electric cores (110) to connect the electric cores (110);

-a support (130), the support (130) being connected to both ends of the cell assembly; the supporting piece (130) is provided with a clamping part (131) so as to facilitate the transfer of the battery cell assembly; the supporting piece (130) is provided with a positioning part (137), and the positioning part (137) is used for being clamped with the box body (210).

2. The battery module according to claim 1, wherein the clamping portion (131) includes protruding ribs (133) provided on the support member (130) and a clamping plane (135), the clamping plane (135) being for clamping by a clamp, the protruding ribs (133) being for abutting against the clamp.

3. The battery module according to claim 1, wherein a limit part (138) is provided on the side of the support member (130) facing the cell assembly.

4. The battery module according to claim 1, wherein the supporting member (130) is made of an insulating material, and the supporting member (130) is provided with an output electrode connecting portion (139).

5. The battery module of claim 1, further comprising a harness collection assembly (140), the harness collection assembly (140) comprising integrally connected suction trays (141), connection rows (143), and collection wires (145); the wire harness collection assembly (140) is arranged at the top of the battery cell assembly.

6. The battery module according to claim 5, wherein an explosion-proof valve is provided at the top of the electric core (110), the harness collection assembly (140) is provided with an avoidance hole (147), and the avoidance hole (147) and the explosion-proof valve are correspondingly provided.

7. The battery module according to claim 1, wherein mica sheets (150) are provided between adjacent cells (110).

8. The battery module according to claim 7, wherein the mica sheet (150) is provided with an air duct (151).

9. A battery pack comprising a case (210) and the battery module according to any one of claims 1 to 8, the battery module being provided in the case (210).

10. The battery pack according to claim 9, wherein the case (210) is provided with a vent hole (211), and the vent hole (211) is disposed in correspondence with a gap between adjacent cells (110).