Battery cell module for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery cell module for a battery pack, which comprises a battery cell module frame and a battery cell module bottom plate, the battery cell module frame and the battery cell module bottom plate are connected with each other to form a battery cell module mounting cavity for mounting a battery cell module, and an integrated busbar CCS component is arranged at the top of the battery cell module; the battery cell module frame body comprises a front end plate and a rear end plate which are symmetrically arranged, a pair of side beam plates are symmetrically arranged between the front end plate and the rear end plate, the front end plate and the rear end plate are respectively provided with an integrated busbar CCS assembly supporting groove, one side of the integrated busbar CCS assembly supporting groove is provided with a terminal clamping groove, an electric connection terminal is arranged in the terminal clamping groove, and the electric connection terminal is connected with the integrated busbar CCS assembly supporting groove. And the electric connection terminal is used for electrically connecting the core module with the outside. The battery cell module is compact in structure and easy to assemble or disassemble and maintain, and not only can realize ordered operation of external electric connection, but also can effectively protect the battery cell module and the integrated busbar CCS assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially relates to a kind of for battery pack's battery cell module. BACKGROUND

[0002] At present, new energy vehicles are widely concerned by all sectors of society due to their excellent environmental performance, and the requirements for new energy vehicles are also constantly improving. As a kind of new energy vehicle, electric vehicles are also developing towards high safety, high energy ratio and lightweight. The main factor determining the driving range of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet the driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery cell modules, i.e., multiple battery cell modules are stacked in the same box, and then the battery cell modules are connected. The core battery cell module generally configures a corresponding number of battery cells according to the size of the required output voltage, and then connects all the battery cells for voltage output.

[0004] The electrical connection of each battery cell in the battery cell module is generally completed by an integrated busbar CSS assembly. To effectively fix the battery cell module and the integrated busbar CSS assembly, a box matching the battery cell module is usually provided, and the integrated busbar CSS assembly is adhered to the top of the battery cell module.

[0005] Although the above-mentioned box structure can effectively cover the battery cell module, it is not convenient for electrical connection between the battery cell module and the external battery management system. The connector on the integrated busbar CSS assembly adhered directly to the top of the battery cell module is a protruding component and is not well hidden, and is easily collided or interfered by components above the battery cell module. In addition, the current method for electrical connection between the battery cell module and the integrated busbar CSS assembly and the external environment generally adopts a wire harness direct connection method, which not only makes the wiring inside the battery pack box chaotic, but also increases the complexity of assembly.

[0006] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. UTILITY MODEL CONTENT

[0007] The utility model aims to overcome the problems of the prior art and provides a battery cell module for a battery pack, which solves the technical problems of the prior art that the battery cell module and the integrated busbar CSS assembly used therewith cannot be effectively fixed and orderly electrically connected with external components, and the assembly method is complicated and inefficient.

[0008] The above-mentioned purpose is achieved by the following technical solutions:

[0009] An electric cell module for a battery pack, comprising an electric cell module frame and an electric cell module bottom plate, the electric cell module frame and the electric cell module bottom plate are connected to each other to form an electric cell module installation cavity for installing an electric cell module, the top of the electric cell module is provided with an integrated busbar CCS assembly; the electric cell module frame comprises a front end plate and a rear end plate arranged symmetrically, a pair of side beam plates are arranged symmetrically between the front end plate and the rear end plate, the front end plate and the rear end plate are respectively provided with an integrated busbar CCS assembly support groove, and a terminal clamping groove is arranged on one side of the integrated busbar CCS assembly support groove, an electric connection terminal is arranged in the terminal clamping groove, and the electric connection terminal is used for electrically connecting the electric cell module and the outside.

[0010] Further, the integrated busbar CCS assembly comprises a wire harness isolation plate matched with the top of the electric cell module, an electric circuit board mounting position is arranged on the wire harness isolation plate, and a pair of aluminum bar mounting positions are arranged in axial symmetry with the electric circuit board mounting position, an aluminum bar corresponding to the electric cell is arranged on the aluminum bar mounting position to realize electrical connection with the electric cell; an electric circuit board is arranged on the electric circuit board mounting position, and the electric circuit board is electrically connected with the aluminum bar through a nickel sheet; one end of the electric circuit board is provided with a connector mounting position, and the connector mounting position is supported through the integrated busbar CCS assembly support groove.

[0011] Further, the top of the front end plate and the rear end plate is higher than the top of the side beam plate, and the top of the integrated busbar CCS assembly support groove is horizontal with the top of the side beam plate.

[0012] Further, the front end plate and the rear end plate are provided with a flexible compaction assembly between the front end plate and the rear end plate and the electric cell module.

[0013] Further, the flexible compaction assembly comprises an epoxy plate arranged on the inner wall of the front end plate and the rear end plate, and a partition bubble cotton is arranged on the outer side of the epoxy plate, and the other side of the partition bubble cotton is attached to the outer wall of the electric cell module.

[0014] Further, a blue film is arranged between the inner wall of the side beam plate and the electric cell module.

[0015] Further, the electric connection terminal and the terminal clamping groove are clamped.

[0016] Further, the top of the electric connection terminal is not higher than the top of the front end plate and the rear end plate.

[0017] Further, the bottom of the side beam plate and the electric cell module bottom plate form an electric cell module bottom air permeation groove.

[0018] Further, the side beam plate comprises an upper side beam plate and a lower side beam plate arranged in parallel from top to bottom, and a middle air passage of the battery cell module is formed between the upper side beam plate and the lower side beam plate. Advantages

[0019] The battery cell module for the battery pack provided by the utility model realizes the quick assembly of the battery cell module through the battery cell module installation cavity formed by the battery cell module frame body and the battery cell module bottom plate, and the connection of the battery cell module, the integrated busbar CCS assembly and the outside is facilitated through the integrated busbar CCS assembly supporting groove and the terminal clamping groove arranged on the front end plate and the rear end plate. In addition, the deformation of the battery cell module can be self-adjusted through the flexible compacting assembly, and the battery cell module frame body is not affected by irreversible deformation. The battery cell module module is compact in structure, easy to assemble or disassemble and maintain, can realize the orderly operation of the external electrical connection, and can effectively protect the battery cell module and the integrated busbar CCS assembly. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structure schematic view of the battery cell module for the battery pack provided by the utility model;

[0021] Fig. 2 It is a structure schematic view of the battery cell module for the battery pack provided by the utility model after the integrated busbar CCS assembly is removed;

[0022] Fig. 3 It is a structure schematic view of the battery cell module for the battery pack provided by the utility model.

[0023] Illustration mark:

[0024] 1-battery cell module frame body, 101-front end plate, 102-rear end plate, 103-side beam plate, 104-integrated busbar CCS assembly supporting groove, 105-terminal clamping groove, 106-upper side beam plate, 107-lower side beam plate;

[0025] 2-battery cell module bottom plate;

[0026] 3-battery cell module installation cavity;

[0027] 4-integrated busbar CCS assembly, 401-wire harness isolation plate, 402-circuit board mounting position, 403-aluminum bar mounting position, 404-aluminum bar, 405-circuit board, 406-nickel sheet, 407-connector mounting position;

[0028] 5-battery cell module;

[0029] 6-electric connection terminal;

[0030] 7-flexible compaction assembly, 701-epoxy plate, 702-baffle foam;

[0031] 8-ventilation groove at bottom of cell module group;

[0032] 9-ventilation groove at middle of cell module group. DETAILED DESCRIPTION

[0033] The utility model will be explained in further detail below according to the drawings and embodiments. The described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0034] As Figs. 1-3 The utility model provides a kind of cell module module for battery pack, including cell module frame body 1 and cell module bottom plate 2, the cell module frame body 1 with the cell module bottom plate 2 are connected to each other and constitute the cell module installation cavity 3 for cell module 5 installation, the top of the cell module 5 is provided with integrated busbar CCS assembly 4;

[0035] The cell module frame body 1 includes symmetrically arranged front end plate 101 and rear end plate 102, a pair of side beam plates 103 are symmetrically arranged between the front end plate 101 and the rear end plate 102, integrated busbar CCS assembly support groove 104 is respectively arranged on the front end plate 101 and the rear end plate 102, and terminal clamping groove 105 is arranged on the side of the integrated busbar CCS assembly support groove 104, electrical connection terminal 6 is arranged in the terminal clamping groove 105, and the electrical connection terminal 6 is used for electrical connection between the cell module 5 and external.

[0036] The utility model is assembled to cell module 5 by cell module installation cavity 3, integrated busbar CCS assembly 4 arranged on the top of cell module 5 is used to realize the cell high voltage series-parallel connection of each cell 501 of the cell module 5, i. e. realize the high voltage series-parallel connection of cell 501 in battery module 5, ensure that battery system can work normally, and carry out information collection, i. e. collect the temperature, voltage and other information of battery, and then realize the connection with external BMS battery management system, and then provide important data support for BMS battery management system.

[0037] And the cell module 5 realizes electrical connection with external by the electrical connection terminal 6, to facilitate external output voltage.

[0038] As Fig. 1As shown, the integrated busbar CCS assembly 4 in the embodiment includes a harness isolation plate 401 matched with the top of the battery cell module 5, the harness isolation plate 401 is provided with a circuit board mounting position 402 at the axial position, and a pair of aluminum bar mounting positions 403 are symmetrically arranged with the circuit board mounting position 402 as the axis, the aluminum bar mounting positions 403 are provided with aluminum bars 404 corresponding to the battery cells 501, for realizing electrical connection with the battery cells 501;

[0039] The circuit board 405 is provided on the circuit board mounting position 402, and the circuit board 405 is electrically connected with the aluminum bar 404 through a nickel sheet 406; one end of the circuit board 405 is provided with a connector mounting position 407, and the connector mounting position 407 is supported by the integrated busbar CCS assembly support groove 104.

[0040] The embodiment realizes the series-parallel connection of each battery cell 501 in the battery cell module 5 through the integrated busbar CCS assembly 4 structure, and realizes data collection and transmission through the connector provided on the connector mounting position 407.

[0041] The form that the connector mounting position 407 is supported by the integrated busbar CCS assembly support groove 104 can not only effectively support the bottom of the connector mounting position 407, but also realize hidden installation of the connector, so that the connector will not be higher than the height of the front end plate 101 or the rear end plate 102, and thus will not be disturbed and affected by other components above the battery cell module frame 1.

[0042] The integrated busbar CCS assembly support groove 104 is arranged on the front end plate 101 and the rear end plate 102 respectively, which can facilitate the position adjustment of the integrated busbar CCS assembly 4 during installation by the operator according to the actual space state inside the battery pack before delivery, that is, the connector mounting position 407 can be placed on the integrated busbar CCS assembly support groove 4 of the front end plate 101, or the connector mounting position 407 can be placed on the integrated busbar CCS assembly support groove 104 of the rear end plate 102.

[0043] In the embodiment, the top of the front end plate 101 and the rear end plate 102 is higher than the top of the side beam plate 103, and the top of the integrated busbar CCS assembly support groove 104 is horizontal with the top of the side beam plate 103.

[0044] By the structure limitation, not only the four sides of the battery module 5 can be limited, but also the top of the integrated busbar CCS assembly 4 can be ensured not to be higher than the top of the integrated busbar CCS assembly 4, and then the integrated busbar CCS assembly 4 can be effectively limited below the horizontal plane constituted by the top of the front end plate 101 and the rear end plate 102, and the integrated busbar CCS assembly 4 can be effectively protected.

[0045] As shown in Fig. 2 and Fig. 3 As an optimization of the present scheme, a flexible compression assembly 7 is arranged between the front end plate 101 and the rear end plate 102 and the battery module 5.

[0046] In the conventional scheme in which the box directly covers the battery module 5, a large amount of heat is generated in the battery module 5 during work, and the volume of the battery module 5 changes slightly when not working. The box is also affected by the extrusion effect and becomes larger under the long-term deformation, and thus cannot effectively limit and fix the battery module 5.

[0047] The flexible compression assembly 7 can not only tightly fix the battery module 5 between the front end plate 101 and the rear end plate 102, but also provide flexible extrusion, so as to ensure that the battery module installation cavity 3 can adapt to the shape change of the battery module 5 when not working and working, and ensure that the battery module 5 is firmly limited in the battery module installation cavity 3.

[0048] The shape change of the battery module 5 when not working and working specifically refers to that the battery module 5 is slightly expanded outward and the volume is expanded to a certain extent when working, and the volume is slightly smaller when not working at room temperature or low temperature. The flexible compression assembly 7 can automatically adapt to such changes.

[0049] Specifically, the flexible compression assembly 7 includes an epoxy plate 701 arranged on the inner wall of the front end plate 101 and the rear end plate 102, and a partitioning foam 702 arranged on the outside of the epoxy plate 701, and the other side of the partitioning foam 702 is attached to the outer wall of the battery module 5.

[0050] The epoxy plate 701 used in the embodiment is also called epoxy glass fiber plate, epoxy phenolic laminated glass cloth plate, and is a kind of high polymer composite material, which has good toughness and impact resistance and can bear a large load. It also has the advantages of strong adhesion, low shrinkage, good insulation, high temperature resistance, corrosion resistance, and waterproof and moisture-proof.

[0051] The 702 partition foam possesses a range of characteristics, including elasticity, light weight, rapid pressure-sensitive fixing, ease of use, flexibility, ultra-thinness, and reliable performance. In this embodiment, EVA foam is preferred due to its excellent elasticity and softness, superior absorption of impact and vibration, making it an ideal packaging material, especially for protecting fragile items. Furthermore, it exhibits excellent weather resistance, chemical resistance, and water resistance, enabling it to withstand various environmental conditions.

[0052] Furthermore, in this embodiment, a blue film is provided between the inner wall of the side beam plate 103 and the battery cell module 5. This blue film can prevent the battery from being affected by the external environment, such as moisture and dust, and has good waterproof and dustproof performance. It can effectively prevent the battery from getting damp and contaminated by dust, thereby extending the battery's service life. In addition, the blue film can also isolate the battery from the external environment, reduce heat dissipation, maintain the battery's temperature stability, and improve the battery's lifespan and performance.

[0053] In this embodiment, the electrical connection terminal 6 and the terminal slot 105 are connected by a snap-fit ​​mechanism. This snap-fit ​​mechanism allows for efficient insertion and removal of the electrical connection terminal 6 and the terminal slot 105, greatly facilitating the connection between the battery module 5 and external electrical connectors.

[0054] like Fig. 2 and Fig. 3 As shown, as an optimization of this embodiment, the top of the electrical connection terminal 6 is not higher than the top of the front end plate 101 and the rear end plate 102, so that it will not be affected by other battery pack components above.

[0055] To facilitate heat dissipation of the battery module 5, a bottom ventilation groove 8 is formed between the bottom of the side beam plate 103 and the bottom plate 2 of the battery module. This bottom ventilation groove 8 allows for ventilation of the bottom of the battery module 5, providing a better ventilation environment for the operation of the battery module 5.

[0056] As a further optimization of this embodiment, the side beam plate 103 includes an upper side beam plate 106 and a lower side beam plate 107 arranged in parallel. The upper side beam plate 106 and the lower side beam plate 107 form a ventilation groove 9 in the middle of the battery cell module. The ventilation groove 9 in the middle of the battery cell module can realize the ventilation of the middle of the battery cell module 5, and provide a better ventilation environment for the operation of the battery cell module 5.

[0057] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cell module for a battery pack, characterized in that, The battery module includes a battery module frame (1) and a battery module base plate (2). The battery module frame (1) and the battery module base plate (2) are connected to each other to form a battery module mounting cavity (3) for installing the battery module (5). An integrated busbar CCS assembly (4) is provided on the top of the battery module (5). The battery cell module frame (1) includes a front end plate (101) and a rear end plate (102) arranged symmetrically. A pair of side beam plates (103) are symmetrically arranged between the front end plate (101) and the rear end plate (102). The front end plate (101) and the rear end plate (102) are respectively provided with integrated busbar CCS component support grooves (104), and a terminal slot (105) is provided on one side of the integrated busbar CCS component support groove (104). An electrical connection terminal (6) is provided in the terminal slot (105), and the electrical connection terminal (6) is used to provide the battery cell module (5) with external electrical connection.

2. A cell module for a battery pack according to claim 1, characterized in that, The integrated busbar CCS assembly (4) includes a wire harness isolation plate (401) that matches the top of the battery cell module (5). A circuit board mounting position (402) is provided at the axial center of the wire harness isolation plate (401), and a pair of aluminum bar mounting positions (403) are provided symmetrically around the circuit board mounting position (402). An aluminum bar (404) corresponding to the battery cell (501) is provided on the aluminum bar mounting position (403) for realizing electrical connection with the battery cell (501). A circuit board (405) is provided on the circuit board mounting position (402), and the circuit board (405) is electrically connected to the aluminum bar (404) through a nickel sheet (406); a connector mounting position (407) is provided at one end of the circuit board (405), and the connector mounting position (407) is supported by the integrated busbar CCS component support groove (104).

3. A cell module for a battery pack according to claim 1 or 2, characterized in that, The tops of the front end plate (101) and the rear end plate (102) are higher than the top of the side beam plate (103), and the top of the integrated busbar CCS component support groove (104) is horizontal with the top of the side beam plate (103).

4. A cell module for a battery pack according to claim 1, characterized in that, A flexible compaction component (7) is provided between the front end plate (101) and the rear end plate (102) and the battery cell module (5).

5. A cell module for a battery pack according to claim 4, characterized in that, The flexible compaction component (7) includes an epoxy board (701) disposed on the inner wall of the front end plate (101) and the rear end plate (102), and a partition foam (702) is disposed on the outer side of the epoxy board (701), and the other side of the partition foam (702) is attached to the outer wall of the battery cell module (5).

6. A cell module for a battery pack according to claim 1, characterized in that, A blue film is provided between the inner wall of the side beam plate (103) and the battery cell module (5).

7. A cell module for a battery pack according to claim 1, characterized in that, The electrical connection terminal (6) is snapped into the terminal slot (105).

8. A cell module for a battery pack according to claim 7, characterized in that, The top of the electrical connection terminal (6) is not higher than the top of the front end plate (101) and the rear end plate (102).

9. A cell module for a battery pack according to claim 1, characterized in that, The bottom of the side beam plate (103) and the bottom plate (2) of the battery cell module form a bottom ventilation groove (8) for the battery cell module.

10. A cell module for a battery pack according to claim 9, characterized in that, The side beam plate (103) includes an upper side beam plate (106) and a lower side beam plate (107) arranged in parallel. The upper side beam plate (106) and the lower side beam plate (107) form a ventilation groove (9) in the middle of the battery cell module.

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