Insulating part, battery cell module, battery pack and electric equipment

Abstract

The embodiment of the utility model provides an insulating part which is used for a battery cell module and is characterized in that an insulating plastic support and an insulating protective cover are integrally formed on the insulating part, the section of the insulating part in the extending direction is in an arc shape and forms a cavity with an opening, and a separation structure is arranged in the cavity in the extending direction. The cavity is used for dividing the cavity into a plurality of sub-cavities, the sub-cavities are used for isolating electrified units of the battery cell modules, the electrified units are connecting pieces used for being electrically connected with the battery cell modules, mounting surfaces are arranged on two edges of the cavity in the width direction, and the mounting surfaces are used for being attached to the surfaces of the battery cell modules. According to the insulating part provided by the scheme, the insulating plastic support and the insulating protective cover in the existing scheme are integrally formed, the insulating part insulates and separates the electrified units through the ribs and protects the electrified units through the sub-cavities, and through implementation of the scheme, the number of structural parts is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an insulating member used in a battery core module. Background Art

[0002] The current blade battery pack uses the following insulation solution for the positive and negative electrodes of the battery cell: the insulating plastic bracket is clamped on the positive and negative poles of the battery cell and separates the connecting pieces. After the connecting pieces and the charged FPC are welded, the insulating protective cover is clamped on the insulating plastic bracket. This solution has many insulating parts and is costly. Utility Model Content

[0003] The utility model provides an insulating component which is integrally formed with the functions of the insulating plastic bracket and the insulating protective cover in the existing solution, thereby solving the problem of many insulating parts and high cost.

[0004] In order to achieve the purpose of this utility model, this utility model provides the following technical solutions:

[0005] According to the first aspect of the utility model, an insulating part is provided for a battery cell module, wherein the insulating part is integrally formed with an insulating plastic bracket and an insulating protective cover, wherein the cross-section of the insulating part in the extension direction is arc-shaped and forms a cavity with an opening, wherein a partition structure is arranged in the cavity along the extension direction for dividing the cavity into a plurality of sub-cavities, wherein the sub-cavities are used for isolating charged units of the battery cell module, wherein the charged units are connectors for electrically connecting the battery cell module, and mounting surfaces are arranged at two edges in the width direction of the cavity, wherein the mounting surfaces are used for fitting with the surface of the battery cell module.

[0006] Optionally, a convex hump is correspondingly formed on the back side of the sub-cavity of the insulating member, the bottoms of the convex hump are sealed and connected to each other, and a separation gap is formed between adjacent convex hump.

[0007] Optionally, the cavity is composed of multiple sub-cavities, the shape of the sub-cavity corresponds to the outer contour of the charged unit, the projection of the sub-cavity in the direction of the pole is larger than the projection of the sub-cavity, and the sub-cavity is set corresponding to the charged unit.

[0008] Optionally, the mounting surface is an adhesive surface, and the adhesive surface includes a first adhesive surface and a second adhesive surface, and the first adhesive surface and the second adhesive surface are both used for bonding the insulating member to the surface of the battery cell module.

[0009] Optionally, the separation structure is a rib arranged at the bottom of the cavity of the insulating member, and the rib divides the cavity into a plurality of sub-cavities.

[0010] Optionally, the convex hulls on both sides in the extending direction of the insulating member and the ends of the subcavity in the extending direction of the insulating member are open.

[0011] Optionally, a clearance space is provided at the edge of the first adhesive surface, and the clearance space is used to avoid an explosion-proof valve of the battery cell.

[0012] According to a second aspect of the utility model, a battery cell module is provided, comprising the above-mentioned insulating member and a plurality of charged units, the plurality of charged units being electrically connected to the battery cell module, the insulating member being mounted on the battery cell module via an adhesive surface, and the insulating member isolating the plurality of charged units of the battery cell module.

[0013] According to a third aspect of the present utility model, a battery pack is provided, comprising the above-mentioned battery cell module and a battery casing, wherein the battery cell module is accommodated in the battery casing.

[0014] According to a fourth aspect of the present utility model, an electrical device comprises the above-mentioned battery pack and an electrical appliance, wherein the battery pack is used to supply power to the electrical appliance.

[0015] The utility model provides an insulating component, which is integrally formed with an insulating plastic bracket and an insulating protective cover in the existing solution. The insulating component insulates and separates the live unit through ribs and protects the live unit through a sub-cavity. Through the implementation of this solution, the number of structural parts is reduced and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of an insulating member according to an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of a battery cell unit and a charged unit according to an embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of a battery cell module according to an embodiment of the present utility model;

[0020] Description of reference numerals:

[0021] Insulating part 1, cavity 1-1, partition structure 1-2, second adhesive surface 1-3, mounting surface 1-4, rib 1-5, sub-cavity 1-6, first adhesive surface 1-7, adhesive surface 1-8, avoidance position 1-9, partition gap 1-10, convex hump 1-11, battery cell unit 2, explosion-proof valve 2-1, injection hole 2-2, positive pole 2-3, negative pole 2-4, charged boss 2-5, charged unit 3, connecting piece 3-1, FPC 3-2, battery cell module 4. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0025] In conjunction with the accompanying drawings, some implementation methods of the present utility model are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] In the prior art, the positive and negative electrodes of the battery cell adopt the following insulation scheme: the insulating plastic bracket is clamped on the positive and negative poles of the battery cell and separates the connecting pieces. After the connecting pieces and the charged FPC are welded, the insulating protective cover is clamped on the insulating plastic bracket. This scheme has many insulating parts and high cost.

[0027] refer to Figures 1 to 3 The utility model provides an insulating part 1, which is used for a battery cell module 4. The insulating part 1 is integrally formed with an insulating plastic bracket and an insulating protective cover. The cross-section of the insulating part 1 in the extension direction is arc-shaped and forms a cavity 1-1 with an opening. A partition structure 1-2 is arranged in the cavity 1-1 along the extension direction, which is used to divide the cavity 1-1 into a plurality of sub-cavities 1-6. The sub-cavity 1-6 is used to isolate the charged unit 3 of the battery cell module 4. The charged unit 3 is a connector for electrically connecting the battery cell module 4. Mounting surfaces 1-4 are arranged on two edges in the width direction of the cavity 1-1, and the mounting surfaces 1-4 are used to fit with the surface of the battery cell module 4.

[0028] Specifically, the insulating part 1 is an injection molded part, the material of which can be selected from fireproof insulating materials, preferably ABS+40% GF. The insulating part 1 replaces the insulating plastic bracket and the insulating protective cover in the original solution. Through structural optimization, one part has the functions of two parts in the original solution, and the isolation and protection capabilities of the live units 3 of the battery module 4 are greatly improved compared with the original solution, which reduces the number of parts and reduces costs as a whole.

[0029] The above-mentioned charged module is composed of a plurality of battery cell units 2 connected together. The connection between the battery cell units 2 can be selected in series or in parallel. The battery cell unit 2 is two adjacently arranged battery cells, and the poles of the battery cells are arranged at both ends. A positive pole 2-3 of a battery cell and a negative pole 2-4 of another battery cell are arranged on one side of the pole of the battery cell unit 2. The poles of the battery cell are arranged at both ends of the battery cell, one end of which is provided with a positive pole 2-3, and the other end is provided with a negative pole 2-4. The end provided with the positive pole 2-3 is also provided with a charged boss 2-5 and an injection hole 2-2. The charged boss 2-5 and the injection hole 2-2 are distributed on both sides of the positive pole 2-3. The charged boss 2-5 is arranged close to one end of the positive pole 2-3, and the injection hole 2-2 is arranged away from one end of the positive pole 2-3. The end provided with the negative pole 2-4 is also provided with a charged boss 2-5 and an explosion-proof valve 2-1. The charged boss 2-5 is arranged away from one end of the negative pole 2-4, and the explosion-proof valve 2-1 is arranged close to one end of the negative pole 2-4.

[0030] The above-mentioned charged unit 3 is a connector, which includes a connecting piece 3-1 and FPC3-2 at one end of the battery cell unit 2. The connecting piece 3-1 connects the positive pole 2-3 of one battery cell of the battery cell unit 2 and the negative pole 2-4 of another battery cell. The FPC3-2 is used to connect the positive pole 2-3 of the battery cell on one side of the battery cell unit 2 and the charged boss 2-5 of the battery cell shell. The positive and negative poles 2-4 of the two batteries of the battery cell unit 2 are arranged alternately for easy series connection. The setting of the charged boss 2-5 facilitates the connection of the positive pole 2-3 to the battery cell shell through the FPC3-2. The BIC obtains the voltage across the battery cell by collecting the voltage difference between the positive pole 2-3 and the negative pole 2-4.

[0031] In one embodiment, a convex bump 1-11 is correspondingly formed on the back side of the sub-cavity 1-6 of the insulating member 1, the bottoms of the convex bumps 1-11 are sealed and connected to each other, and a separation gap 1-10 is formed between adjacent convex bumps 1-11.

[0032] Specifically, the back side of the insulating part 1 is provided with a convex bump 1-11. On the one hand, it is formed by setting a sub-cavity 1-6 to isolate and protect the live unit 3. On the other hand, this mechanism can form a separation gap 1-10, which is equivalent to reducing the glue at the bottom where the rib 1-5 is located, so as to avoid defects such as incomplete mold or shrinkage during injection molding due to excessive glue thickness at the rib 1-5.

[0033] In one embodiment, the cavity 1-1 is composed of multiple sub-cavities 1-6, the shape of the sub-cavity 1-6 corresponds to the outer contour of the charged unit 3, the projection of the cavity 1-1 in the pole direction is larger than the projection of the sub-cavity 1-6, and the sub-cavity 1-6 is set corresponding to the charged unit 3.

[0034] Specifically, the multiple sub-cavities 1-6 separated by the cavity 1-1 effectively replace the functions of the insulating plastic bracket and the insulating protective cover of the original solution. The sub-cavity 1-6 separates the charged unit 3 at the side wall in the length direction of the insulating component 1. The sub-cavity 1-6 protects the charged unit 3 as a whole, and can form all-round three-dimensional protection with the side of the battery cell unit 2 where the charged unit 3 is located, thereby greatly improving the isolation and protection functions of the insulating component 1.

[0035] In one embodiment, the mounting surface 1-4 is an adhesive surface 1-8, and the adhesive surface 1-8 includes a first adhesive surface 1-7 and a second adhesive surface 1-3, and the first adhesive surface 1-7 and the second adhesive surface 1-3 are both used for bonding the insulating part 1 to the surface of the battery cell module 4.

[0036] Specifically, the adhesive surface 1-8 is adhered with a contoured double-sided adhesive, and the adhesive type is preferably a self-adhesive adhesive. When the adhesive surface 1-8 is mounted on the battery cell surface, the battery cell mounting surface needs to be kept clean, and a certain pressing force needs to be applied to ensure that the adhesive surface 1-8 is fully bonded to the battery cell mounting surface.

[0037] In one embodiment, the separation structure 1 - 2 is a rib 1 - 5 disposed at the bottom of the cavity 1 - 1 of the insulating member 1 , and the rib 1 - 5 divides the cavity 1 - 1 into a plurality of sub-cavities 1 - 6.

[0038] Specifically, the rib 1-5 is a wedge-shaped structure with a cross-section that is small at the end and large at the root. The design of this structural form is conducive to demolding during molding. The thickness of the rib 1-5 is preferably between 0.8mm and 1.2mm. Preferably, the rib 1-5 can be a hollow structure. The rib 1-5 divides the cavity 1-1 into multiple sub-cavities 1-6. The rib 1-5 is an important isolation structure of each sub-cavity 1-6 in the length direction of the insulating part 1, which provides a guarantee for the sub-cavity 1-6 to isolate the charged unit 3 between the battery cell units 2.

[0039] In one embodiment, the convex hulls 1 - 11 on both sides of the insulating member 1 in the extending direction and the ends of the subcavity 1 - 6 in the extending direction of the insulating member 1 are open.

[0040] Specifically, a closed side with an opening can also be provided here, preferably an open structure. The openings at both ends of the insulating member 1 are provided here to facilitate the connection and lead-out of the electrical connector.

[0041] In one embodiment, a clearance space 1-9 is provided at the edge of the first adhesive surface 1-7, and the clearance space 1-9 is used to avoid the explosion-proof valve 2-1 of the battery cell.

[0042] Specifically, the setting of the avoidance position 1-9 does not cause obstruction when the explosion-proof valve 2-1 is opened. In addition, the setting of the avoidance position 1-9 facilitates distinguishing the difference between the two adhesive surfaces, and it is not easy to take it wrong or stick it in the wrong direction during assembly.

[0043] According to another embodiment of the present application, a battery cell module 4 is provided, including the above-mentioned insulating member 1 and multiple charged units 3, the multiple charged units 3 are electrically connected to the battery cell module 4, the insulating member 1 is installed on the battery cell module 4 through adhesive surfaces 1-8, and the insulating member 1 isolates the multiple charged units 3 of the battery cell module 4.

[0044] Specifically, the battery cell module 4 can be arranged in multiple layers and multiple rows, or in a single layer and multiple rows, depending on the size of the battery pack, as well as the requirements of voltage and capacity.

[0045] According to another embodiment of the present application, a battery pack is provided, comprising the above-mentioned battery cell module and a battery casing, wherein the battery cell module is accommodated in the battery casing 4.

[0046] Specifically, the battery pack may include one group of the above-mentioned battery cell modules 4, or may include multiple groups of the above-mentioned battery cell modules 4. The above-mentioned battery cell modules 4 may be connected in series in multiple strings, in parallel in multiple strings, or in series and then in parallel in multiple strings.

[0047] According to another embodiment of the present application, there is provided an electrical device, comprising the above-mentioned battery pack and an electrical device, wherein the battery pack is used to supply power to the electrical device.

[0048] Specifically, the electrical equipment can be a new energy vehicle or an energy storage device. For example, a new energy vehicle includes a battery pack and a motor, the battery pack is used to supply power to the motor, and the motor provides power for the new energy vehicle to move.

[0049] The utility model provides an insulating component 1, which is integrally formed with an insulating plastic bracket and an insulating protective cover in the existing solution. The insulating component 1 insulates and separates the live unit 3 through ribs 1-5 and protects the live unit 3 through sub-cavities 1-6. Through the implementation of this solution, the number of structural parts is reduced and the cost is reduced.

[0050] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0051] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An insulating member for a battery cell module, characterized in that: The insulating part is integrally formed with an insulating plastic bracket and an insulating protective cover. The cross-section of the insulating part in the extension direction is arc-shaped and forms an open cavity. A partition structure is arranged in the cavity along the extension direction for dividing the cavity into a plurality of sub-cavities. The sub-cavities are used to isolate the charged units of the battery cell modules. The charged units are connectors for electrically connecting the battery cell modules. Mounting surfaces are arranged on the two edges in the width direction of the cavity, and the mounting surfaces are used to fit with the surface of the battery cell module.

2. The insulating member according to claim 1, characterized in that A convex bump is correspondingly formed on the back side of the sub-cavity of the insulating member, the bottoms of the convex bumps are sealed and connected to each other, and a separation gap is formed between adjacent convex bumps.

3. The insulating member according to claim 1, characterized in that: The cavity is composed of a plurality of sub-cavities, the shape of the sub-cavity corresponds to the outer contour of the charged unit, the projection of the sub-cavity in the pole direction is larger than the projection of the sub-cavity, and the sub-cavity is arranged corresponding to the charged unit.

4. The insulating member according to claim 1, characterized in that: The mounting surface is an adhesive surface, and the adhesive surface includes a first adhesive surface and a second adhesive surface, and the first adhesive surface and the second adhesive surface are both used for bonding the insulating member to the surface of the battery cell module.

5. The insulating member according to claim 1, characterized in that: The separation structure is a rib arranged at the bottom of the insulating member cavity, and the rib divides the cavity into a plurality of sub-cavities.

6. The insulating member according to claim 2 or 3, characterized in that: The convex hulls on both sides of the insulating member in the extending direction and the ends of the sub-cavity in the extending direction of the insulating member are open.

7. The insulating member according to claim 4, characterized in that: The edge of the first adhesive surface is provided with an avoidance space, and the avoidance space is used to avoid the explosion-proof valve of the battery cell.

8. A battery cell module, comprising the insulating member described in any one of claims 1-7 and a plurality of the charged units, wherein the plurality of charged units are electrically connected to the battery cell module, the insulating member is mounted on the battery cell module via an adhesive surface, and the insulating member isolates the plurality of charged units of the battery cell module.

9. A battery pack, characterized in that: It comprises the battery cell module and the battery casing as claimed in claim 8, wherein the battery cell module is accommodated in the battery casing.

10. An electrical device, characterized in that: It comprises the battery pack as claimed in claim 9 and an electrical appliance, wherein the battery pack is used to supply power to the electrical appliance.

Images