High-capacity power battery module
Through the rational layout of battery module design, the use of components such as end plates, epoxy thermal pads and CCS integrated templates has solved the energy density and heat dissipation problems of lithium battery modules when they are grouped, achieving high energy density and good heat dissipation effects, and improving the safety and practicality of the battery.
Patent Information
- Application Number
- CN202422595677.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing lithium battery modules are not designed properly when grouped, which affects the energy density and heat dissipation capacity and poses a safety hazard.
A rationally laid-out battery module design is adopted, using end plates, epoxy thermal pads, PET steel strips and CCS integrated templates. The battery cells are connected in series and parallel by welding the tabs. Combined with a flexible circuit control board and aluminum bars, the energy density is improved and the heat dissipation effect is enhanced.
The energy density and heat dissipation capacity of the battery module are improved, the safety is enhanced, and the reliability and practicality of the battery are ensured.
Smart Images
Figure CN223401692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a battery module, in particular to a large-capacity power battery module. Background Art
[0002] With the development of new energy vehicles, the performance requirements of lithium batteries are getting higher and higher. Not only must the battery life be long but also safe and reliable. In order to improve the battery life, individual batteries need to be connected in series to form a large battery module. If the module is not designed properly when grouping, it will affect the energy density and heat dissipation capacity of the entire battery, causing unsafe accidents. In order to solve this problem, a lithium battery module with a reasonable layout is designed. Utility Model Content
[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a large-capacity power battery module with reasonable structural design, high energy density, good heat dissipation effect and strong practicality.
[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a large-capacity power battery module, including a battery cell, an end plate, an epoxy thermal pad, a PET steel belt and a CCS integrated template, the end plate including two side end plates and a middle end plate, the two side end plates are provided with steel belt grooves, two battery cells are arranged between the end plates, epoxy thermal pads are affixed to the contact points between the battery cell and the inner side of the end plate, the PET steel belt is tightened on the steel belt groove, and the CCS integrated template is welded to the top of the battery cell's pole ear.
[0005] Preferably, the middle of the end plate is a hollow structure.
[0006] Preferably, the CCS integrated template includes a flexible circuit control board, a PC wiring harness isolation board and an aluminum bar.
[0007] The beneficial effects of this utility model are: The utility model has a reasonable structural design, with an end plate for every two cells, significantly improving energy density. Epoxy thermal pads are attached between the inner side of the end plate and the contact surface of the cell, facilitating heat generated by the battery to be transferred to the end plate through the thermal pad. Heat is then dissipated to the outside through the end plate channel by a cooling fan inside the battery pack, achieving high heat dissipation efficiency and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;
[0009] Figure 1 It is a structural diagram of the utility model;
[0010] Figure 2 It is an exploded schematic diagram of the present utility model. DETAILED DESCRIPTION
[0011] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0012] Reference Figure 1-2 This specific embodiment adopts the following technical solution: a large-capacity power battery module, including a battery cell 1, an end plate, an epoxy thermal pad 4, a PET steel belt 5 and a CCS integrated template 6, the end plate includes two side end plates 2 and a middle end plate 3, the two side end plates 2 are provided with steel belt grooves 7, two battery cells 1 are arranged between the end plates, the contact point between the battery cell 1 and the inner side of the end plate 3 is affixed with an epoxy thermal pad 4, the PET steel belt 5 is tightened on the steel belt groove 7, and the top of the pole ear of the battery cell 1 is welded with a CCS integrated template 6.
[0013] It is worth noting that the middle of the end plate is a hollow structure.
[0014] In addition, the CCS integrated template 6 includes a flexible circuit control board 61, a PC wire harness isolation board 62 and an aluminum bar 63.
[0015] The end plates of this specific embodiment are made of AL6063-T6 material through extrusion molding. The middle part is hollow to reduce weight, with good thermal conductivity and high tensile strength. The end plates on both sides are provided with steel belt grooves to facilitate the steel belt to be tightened after the module is assembled; the inner side of the end plate and the contact surface of the single battery are attached with epoxy thermal pads, which facilitate the heat generated by the battery to be transferred to the end plate through the thermal pads, and then discharged to the outside through the end plate channel by the cooling fan inside the battery pack to achieve heat dissipation capacity.
[0016] In order to improve energy density, an end plate is provided for every two single cells. After the batteries to be grouped are fixed with steel strips, the integrated motherboard CCS is welded to the top of the tab, finally forming a complete large-capacity module.
[0017] The CCS integrated motherboard of this specific embodiment is mainly composed of a flexible circuit control board (FPC), a PC harness isolation board, an aluminum bar, etc. The flexible circuit board is responsible for collecting battery module information. The PC harness isolation board has good flame retardant performance and can maintain no deformation under alternating temperatures of 80-120°C. The main function of the aluminum bar is to connect single cells in series and parallel into a large-capacity module.
[0018] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A large-capacity power battery module, characterized in that: The invention comprises a battery cell (1), an end plate, an epoxy thermal pad (4), a PET steel strip (5) and a CCS integrated template (6), wherein the end plate comprises two side end plates (2) and a middle end plate (3), the two side end plates (2) are provided with steel strip grooves (7), two battery cells (1) are arranged between the end plates, epoxy thermal pads (4) are affixed to the inner contact points of the battery cells (1) and the end plates (3), the PET steel strip (5) is tightened on the steel strip grooves (7), and the CCS integrated template (6) is welded to the top of the tab of the battery cell (1).
2. A large-capacity power battery module according to claim 1, characterized in that: The middle of the end plate is a hollow structure.
3. A large-capacity power battery module according to claim 1, characterized in that: The CCS integrated template (6) includes a flexible circuit control board (61), a PC wiring harness isolation board (62) and an aluminum bar (63).