CN220692215U - CTP battery module with CCS assembly - Google Patents

Abstract

The utility model discloses a CTP battery module with a CCS component, which comprises a CTP module substrate formed by connecting a plurality of rows of electric core units, wherein an integral integrated CCS component capable of adapting to the plurality of rows of electric core units of the CTP module substrate is arranged above the CTP module substrate, an upper cover component is detachably arranged above the integral integrated CCS component, the integral integrated CCS component comprises a CCS bracket for covering the plurality of rows of electric core units, a plurality of rows of bus bars for integrating the plurality of rows of electric core units on the integral CCS bracket and a plurality of FPC flexible circuit boards, and the bus bars are welded and fixed with the corresponding electric core pole. The utility model can effectively improve the grouping efficiency of the power battery module and reduce the weight and cost of the battery module through the arrangement of the integrally integrated CCS component.

Description

CTP battery module with CCS assembly

Technical Field

The utility model relates to the technical field of battery modules, in particular to a CTP battery module with a CCS assembly.

Background

The battery module CCS component (the battery module collecting integrated piece) comprises a bracket and a busbar, and under the general condition, the battery module collects voltage and temperature signals to the single battery module through the single CCS component, so that the quantity of the CCS components is more, the assembly efficiency is reduced, the manufacturing cost is increased, and the batch production is not facilitated.

Chinese patent CN 219040671U discloses a CCS structure for a battery module, including a bracket, which is clamped on the battery module to realize integrated installation between the bracket and the battery module; the connecting piece is arranged on the bracket and is connected with the battery cell on the battery module in a welding way and is used for connecting the battery cell; the flexible line way board, flexible line way board joint is on the support, and flexible line way board passes through the connecting wire with the connection piece to be connected with the BMS that is used for gathering the voltage and the temperature of electric core, adopts the fashioned flexible line way board of cross cutting to replace traditional FPC sampling pencil, and flexible line way board simple structure has simplified product structure, greatly reduced product cost, avoids using high pollution processes such as electroplating, etching in the shaping process, reduces the influence of product production to the environment. In the technology, the CCS structure is formed by injection molding, the CCS component is thicker, heavier and more costly, and the problems that the flatness of the bracket is low, the molding is difficult, the manufacturing cost is high and mass production is not facilitated when the CCS size is larger due to the fact that the size of the large module is expanded and the high integration is achieved can not be solved.

Chinese patent CN 218334193U discloses a battery module for effectively slowing down thermal diffusion, which comprises a housing and a plurality of single battery cells arranged in the housing, wherein the single battery cells are provided with a battery cell explosion-proof valve, a top plate of the housing is provided with a first through hole corresponding to the battery cell explosion-proof valve, and a protective film is covered at the first through hole. An integrated cover plate is arranged between the single battery cell and the top plate, and a second through hole corresponding to the battery cell explosion-proof valve is formed in the integrated cover plate. In addition, the single battery cells are thermally insulated and protected by using aerogel thermal insulation sheets. According to the battery module, the thermal runaway of the single battery is actively protected, and after the thermal runaway of the single battery, the high-temperature eruption material can be smoothly discharged out of the shell, so that the high-temperature eruption material can be effectively prevented from being scattered on the bus bar and the peripheral battery cells to generate arc discharge, the whole battery module is influenced, and the safety of a power battery system is ensured. The voltage acquisition part of the technical structure of the patent does not adopt a U-shaped design, and is easily damaged by the jet and the high-temperature gas at one time when the battery cell is out of control; the protective film of the upper cover of the patent module adopts a plastic film material, so that the secondary damage of the module caused by falling of high-temperature injection after the thermal runaway of the battery cell cannot be resisted, and the thermal safety protection capability effect is poor.

The CTP battery module is a battery module structure with high energy density which is derived under the background of light weight of a battery pack and improvement of energy density, is a core electric energy component of a power battery system, and aims to improve the energy density, reduce the weight and reduce the cost on the premise of protecting an electric core and outputting power energy. However, the plurality of CCS modules of the battery module is disadvantageous to mass production and has low efficiency, and therefore, it is necessary to provide a CTP battery module with convenient assembly and/or excellent thermal safety protection capability.

Disclosure of Invention

The utility model aims to provide a CTP battery module with an integrally integrated CCS component.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

CTP battery module with CCS subassembly, include the CTP module base member of being formed by the connection of many rows of electric core units, CTP module base member top sets up the whole integrated form CCS subassembly that can adapt many rows of electric core units of CTP module base member, the detachable upper cover subassembly that sets up in top of whole integrated form CCS subassembly, whole integrated form CCS subassembly is including the integrated form CCS support that covers many rows of electric core units, the many rows of busbar and many FPC flexible circuit boards that correspond many rows of electric core units on integrated form CCS support, busbar and the electric core post welded fastening that corresponds.

Wherein, the integrated CCS bracket is prefabricated with an electric core pole column avoiding hole; the integrated CCS component is horizontally positioned through the outer edge of the integrated CCS bracket, and vertical limiting is completed through the lamination of the lower surface of the busbar and the upper surface of the battery cell pole.

The busbar is positioned in the horizontal direction on the integrated CCS bracket through the busbar positioning hole, and is matched with the busbar fixing column on the integrated CCS bracket through the busbar positioning hole to finish fixation through hot riveting.

The FPC flexible circuit board is horizontally positioned on the integrated CCS bracket through the FPC positioning hole, is matched with the FPC fixing column on the integrated CCS bracket through the FPC positioning hole and is fixed through hot riveting.

The integrated CCS bracket is formed by plastic suction, and two ends of the CTP module base body are clamped and fixed with the side beams of the battery system box body through end plates.

The upper cover assembly is integrally provided with an upper cover buckle, the integrated CCS bracket is integrally provided with an upper cover positioning buckle matched with the upper cover buckle, and the upper cover assembly is connected with the integrated CCS bracket through the upper cover buckle and the upper cover positioning buckle.

The electric core of the CTP module matrix is connected with the end plate by adopting a cushion pad and double-sided back adhesive; adjacent cells forming each row of cell units are connected through a first heat insulation pad with double-sided back adhesion, and opposite cells of two adjacent rows of cell units are connected through a second heat insulation pad with double-sided back adhesion.

The FPC flexible circuit board is in a U-shaped structure, and the positions of the explosion-proof valves of the battery cells are avoided between the two branches.

The integrated CCS bracket is provided with a first air leakage hole corresponding to the battery cell explosion-proof valve, and the upper cover component is provided with a second air leakage hole corresponding to the battery cell explosion-proof valve.

Wherein the upper cover assembly comprises an upper cover and a mica plate layer arranged at the upper end of the upper cover, wherein the mica plate layer comprises a plurality of mica plate units, and each mica plate unit comprises two mica plates which are separated along the length direction and are connected through a mica tape; each mica plate is correspondingly positioned above a row of the bus bars and is used for carrying out heat protection on the upper area of the bus bar below, so that the high-temperature spray of the out-of-control battery cell is prevented from falling back to influence the high-voltage area of the battery module; the mica tape is correspondingly positioned above the battery cell explosion-proof valve, so that high-temperature injection objects are prevented from falling back to the upper surface of the battery cell which is not out of control through the first air leakage hole and the second air leakage hole.

According to the CTP battery module with the CCS component, the integral integrated CCS component which can be matched with the CTP module base body and provided with the multiple rows of the battery cells is arranged above the CTP module base body formed by connecting the multiple rows of the battery cells, the upper cover component is detachably arranged above the integral integrated CCS component, and a plurality of CCS components are replaced by arranging the integral integrated CCS component; the CCS component is integrated, so that the working procedures and human resources for assembling the busbar and the FPC are reduced, the production efficiency is improved, the production cost is reduced, the batch production is convenient, the grouping efficiency of the power battery module can be effectively improved, and the weight and the cost of the battery module are reduced.

According to the CTP battery module with the CCS component, the mica plates are correspondingly positioned above each row of bus bars, so that the upper area of the bus bars below is thermally protected, and the influence of falling of high-temperature injection objects of the out-of-control battery core on the high-voltage area of the battery module is prevented; the mica tape is correspondingly positioned above the battery cell explosion-proof valve, so that high-temperature injection objects are prevented from falling back to the upper surface of the battery cell which is not out of control through the first air leakage hole and the second air leakage hole, the thermoelectric separation safety protection design of the high-energy-density CTP module is realized, the thermal safety protection capability of the high-energy-density battery module is improved, and the thermal safety performance of the high-energy-density battery module is improved.

Drawings

FIG. 1 is a schematic diagram of the CTP module with CCS assembly of the present utility model.

Fig. 2 is an exploded view of a CTP module having CCS components of the present utility model.

FIG. 3 is an exploded view of the CCS assembly of the present utility model.

Fig. 4 is a partial enlarged view of a portion a in fig. 3.

Fig. 5 is a partial enlarged view of a portion B in fig. 3.

FIG. 6 is a schematic diagram of the assembly of the CCS assembly of the present utility model with the upper cover of the upper cover assembly.

Fig. 7 is a partial enlarged view of a portion C in fig. 6.

Fig. 8 is an exploded view of the cap assembly of the present utility model.

Reference numerals illustrate:

1-end plates; 2-cushion pad; 3-an electric core; 4-a first insulation blanket; 5-a second insulation blanket;

6-a monolithically integrated CCS component;

601-an integrated CCS stent; 6011-busbar fixing column; 6012-FPC fixing posts; 6013-electric core pole avoiding hole; 6014-first vent hole; 6015-upper cover positioning buckle;

602-a bus; 6021-buss bar positioning holes;

603-an FPC flexible circuit board; 6031-FPC locating hole;

7-an upper cover assembly; 701-an upper cover; 702-mica tape; 703-mica boards; 7011-upper cover clip; 7012-a second vent.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 7, the CTP battery module with CCS assembly includes CTP module base body formed by connecting multiple rows of electric core units, CTP module base body top sets up whole integrated CCS assembly 6, whole integrated CCS assembly 6's top detachably sets up upper cover assembly 7, whole integrated CCS assembly 6 includes the integrated CCS support 601 that covers multiple rows of electric core units, the multiple row busbar 602 and the multiple FPC flexible circuit board 603 of corresponding multiple rows of electric core units integrated on integrated CCS support 601, busbar 602 and corresponding electric core post welded fastening, integrated CCS support 601 both can pre-fix busbar 602, can fix FPC flexible circuit board 603 again.

In this embodiment of the present application, the number of single-row battery cells is three, that is, the CTP battery module is formed by stacking three rows of battery cells 3 arranged one by one, and actual production may not be limited to this. According to the embodiment of the application, a plurality of (such as three) single-row long battery cells are connected and integrated into one CTP battery module, and the battery module is further integrated on the basis of the highly integrated CTP battery module through the integrated design of the integrally integrated CCS assembly, so that the grouping efficiency of the battery module can be improved, and the energy density of the battery module is improved.

In some embodiments, two ends of the CTP module substrate are fastened and fixed with the side beams of the battery system box body through the end plates 1, the electric core 3 and the end plates 1 are connected by adopting the cushion pad 2 and double-sided back glue on two sides of the cushion pad 2, so as to prevent the electric core from being damaged by impact in the use process of the battery system.

In some embodiments, the integrated CCS assembly 6 is positioned in the horizontal direction by the outer edge of the integrated CCS bracket 601 in cooperation with a tool, the integrated CCS bracket 601 is provided with a battery cell pole avoiding hole 6013, and the integrated CCS assembly 6 is bonded to the upper surface of the battery cell 3 by the lower surface of the busbar 602 by means of the battery cell pole avoiding hole 6013 to complete the vertical direction limitation of the integrated CCS assembly 6.

In some embodiments, the bus 602 is horizontally positioned on the integrated CCS support 601 through the bus positioning hole 6021 thereon, and the fixing is completed by the bus positioning hole 6021 and the bus fixing post 6011 on the integrated CCS support 601 in a matching and hot riveting manner.

In some embodiments, the FPC flexible circuit board 603 is positioned horizontally on the integrated CCS support 601 through the FPC positioning hole 6031, and is fixed by hot riveting and pressing with the FPC fixing post 6012.

In some embodiments of the present application, the upper cover assembly 7 is connected to the integrally integrated CCS assembly 6 through an upper cover buckle 7011 thereof, specifically, the upper cover assembly 7 is fastened and fixed with an upper cover positioning buckle 6015 provided on the integrally integrated CCS bracket through an interference fit of the upper cover buckle 7011, so as to complete the connection with the integrally integrated CCS assembly 6; through the connection of the upper cover buckle 7011 and the upper cover positioning buckle 6015, the material and the single installation procedure of a single buckle are reduced, and the cost and the weight of parts of the product are reduced.

The integrated CCS bracket 601 in the embodiment of the present application may be formed by plastic suction, so that the manufactured product is thinner, lighter in weight, high in flexibility, and higher in flatness, and solves the problems of low flatness, heavy weight, and high manufacturing cost of the CCS assembly formed by injection molding, thereby effectively reducing the weight and cost of the power battery module.

The integrally integrated CCS component is integrally integrated, and a plurality of CCS components are replaced by a whole large-size integrally integrated CCS component; the integrated CCS component is integrated, so that the working procedures and human resources for assembling the bus bars and the FPC flexible circuit board are reduced, the production efficiency is improved, the cost of module parts and the weight of the module can be reduced, the cost and the weight of a battery system are further reduced, and the energy density of the battery system is improved.

In addition, the integrally integrated CCS component 6 has strong size expansibility, can expand along with the change of the size of the CTP battery module in the length direction, and is further suitable for new energy vehicle types with different electric quantities through the proportion of the different electric quantities.

In some embodiments, the integrated CCS bracket 601 is provided with a first venting hole 6014 corresponding to the battery cell explosion-proof valve, and the corresponding upper cover 701 is provided with a second venting hole 7012 corresponding to the battery cell explosion-proof valve. Through the arrangement of the two air leakage holes, when the battery core is in thermal runaway, high-temperature injection materials and air are discharged through the battery core explosion-proof valve at the top of the battery core to be leaked, so that explosion is prevented.

In some embodiments, the FPC flexible circuit board 603 has a U-shaped structure, and the two branches are separated from each other by a position of the explosion-proof valve; in this way, when the explosion-proof valve at the top of the thermal runaway battery cell discharges high-temperature injection materials and gas, the high-temperature injection materials and the gas sequentially pass through the first air leakage hole 6014 and the second air leakage hole 7012 and then are punched out, so that the FPC flexible circuit board 603 is not damaged.

In some embodiments, each row of the battery cells is formed by sequentially arranging and connecting a plurality of battery cells 3, adjacent battery cells of the plurality of rows are connected, specifically, two battery cells 3 of each row form a single row of battery cells by a first heat insulation pad 4 arranged between large surfaces of the battery cells and double-sided back adhesive bonds on two sides of the first heat insulation pad 4, and the side surfaces of the battery cells of the single row of battery cells are connected by a second heat insulation pad 5 and double-sided back adhesive bonds on two sides of the second heat insulation pad 5; the large surface and the side surface of the battery core 3 are respectively provided with the heat insulation pad for heat insulation, so that the adjacent battery core can be effectively protected from being influenced by the thermal runaway battery core, and the thermal safety protection capability of the battery is improved from the battery core of the module. As a preferred embodiment, for the large surface and the side surface of the battery core 3 (for example, the large surface is far more than the side surface), the first heat insulation pad 4 is made of ceramic fiber aerogel material with better high temperature resistance, and the second heat insulation pad 5 is made of glass fiber aerogel material with lower cost, which can be selected in particular.

In some embodiments, the upper cover assembly 7 includes an upper cover 701 and a mica board layer disposed at an upper end of the upper cover, the mica board layer including a plurality of mica board units, each mica board unit including two mica boards 703 spaced apart along a length thereof and connected by a mica tape 702; each mica plate is correspondingly positioned above a row of the bus bars, and the mica tape is correspondingly positioned above the battery cell explosion-proof valve.

When the explosion-proof valve at the top of the thermal runaway battery cell discharges high-temperature injection materials and gas, the high-temperature injection materials and the gas are flushed out after passing through the first air leakage hole 6014 and the second air leakage hole 7012, the mica tape 702 is flushed out at the corresponding positions and discharged from the top of the CTP battery module, the mica tape 702 of the upper cover assembly 7 can prevent the high-temperature injection materials from falling back to the upper surface of the battery cell which is not out of control through the first air leakage hole 6014 and the second air leakage hole 7012, and the mica plate 703 thermally protects the area above the busbar, so that the high-temperature injection materials are prevented from falling back to influence the high-pressure area of the module.

The mica tape 702 is formed by mica and glass fiber composite material, has the thickness of 0.15mm-0.25mm, has the performance of high temperature resistance and fire resistance, has an anti-explosion air pressure intensity design value smaller than the opening air pressure intensity of an anti-explosion valve, does not influence smooth ejection of high-temperature eruption substances, and has a certain heat protection effect on the top of the CTP battery module.

In the embodiment of the application, the mica tape 702 and the mica board 703 are arranged in a combined way, so that high-temperature spray can be effectively prevented from scattering on the busbar 602 and the peripheral battery cells to generate arc discharge, the possibility that high-pressure smoke damages insulation on the anode and the cathode is reduced, and the active isolation of high pressure and smoke avoids ignition caused by interference with high pressure after the thermal runaway smoke discharge of a single battery cell, thereby realizing module-level thermoelectric separation protection; compared with the scheme of singly using the mica plate, the weight is reduced by 30 percent, and the cost is reduced by about 20 percent

According to the embodiment of the application, the integrated CCS component which is integrated to the CTP battery module through high integration, low cost and easy assembly, the integration degree and grouping efficiency of the CTP battery module are improved, the weight and cost of the module are reduced, and the production efficiency is improved.

According to the thermal runaway safety problem of the high-energy-density power battery module, the module-level thermoelectric separation protection is realized through the design of the thermal safety protection step by step from the module cells to the module upper side, the thermal safety protection capability of the battery module is further improved, the thermal safety performance of the high-energy-density module is improved, and then the safety performance of the whole battery system is improved.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. Unless otherwise indicated, the meaning of "a plurality" is two or more.

Unless specifically stated and limited otherwise, the terms "connected," "assembled" and "mounted" 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 in interaction relationship with two elements. It will be understood by those of ordinary skill in the art that the specific meaning of the terms above in this utility model may be understood by specific circumstances

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. CTP battery module with CCS subassembly, its characterized in that includes the CTP module base member of being formed by the connection of many rows of electric core units, CTP module base member top sets up the whole integrated form CCS subassembly that can adapt many rows of electric core units of CTP module base member, the detachable upper cover subassembly that sets up in top of whole integrated form CCS subassembly, whole integrated form CCS subassembly is including the integrated form CCS support that covers many rows of electric core units, the many rows of busbar and many FPC flexible circuit boards of corresponding many rows of electric core units on integrated form CCS support, busbar and corresponding electric core post welded fastening.

2. The CTP battery module having the CCS assembly according to claim 1, wherein said integrated CCS bracket is pre-fabricated with a cell post avoidance hole; the integrated CCS component is horizontally positioned through the outer edge of the integrated CCS bracket, and vertical limiting is completed through the lamination of the lower surface of the busbar and the upper surface of the battery cell pole.

3. The CTP battery module having the CCS assembly according to claim 1, wherein said bus bars are horizontally positioned on said integrated CCS support through bus bar positioning holes, and fixing is accomplished by hot riveting through the cooperation of said bus bar positioning holes with bus bar fixing posts on said integrated CCS support.

4. The CTP battery module having the CCS assembly as recited in claim 1, wherein the FPC flexible circuit board is horizontally positioned on the integrated CCS support through FPC positioning holes, and is matched with FPC fixing posts on the integrated CCS support through FPC positioning holes and is fixed by hot riveting.

5. The CTP battery module having the CCS assembly as recited in claim 1, wherein said integrated CCS bracket is formed by suction molding, and two ends of said CTP module base are fastened and fixed to the side beams of the battery system case by arranging end plates.

6. The CTP battery module having the CCS assembly according to claim 1, wherein an upper cap buckle is integrally formed on the upper cap assembly, an upper cap positioning buckle matched with the upper cap buckle is integrally provided on the integrated CCS bracket, and the upper cap assembly is connected with the integrated CCS bracket through the upper cap buckle and the upper cap positioning buckle.

7. The CTP battery module with CCS assembly according to claim 1, wherein said CTP module base body electrical core and end plate are connected by cushion pad and double sided adhesive tape; adjacent cells forming each row of cell units are connected through a first heat insulation pad with double-sided back adhesion, and opposite cells of two adjacent rows of cell units are connected through a second heat insulation pad with double-sided back adhesion.

8. The CTP battery module having the CCS assembly according to claim 1, wherein said FPC flexible circuit board has a U-shaped configuration, and a position of said cell explosion-proof valve is avoided between said two branches.

9. The CTP battery module having the CCS assembly as recited in claim 6, wherein said integrated CCS bracket is provided with a first vent hole corresponding to a position of said cell explosion proof valve, and said upper cover assembly is provided with a second vent hole corresponding to a position of said cell explosion proof valve.

10. The CTP battery module having the CCS assembly according to claim 9, wherein said upper cap assembly comprises an upper cap and a mica plate layer disposed at an upper end of said upper cap, said mica plate layer comprising a plurality of mica plate units, each mica plate unit comprising two mica plates spaced apart along a length thereof and connected by a mica tape; each mica plate is correspondingly positioned above a row of the bus bars and is used for carrying out heat protection on the upper area of the bus bar below, so that the high-temperature spray of the out-of-control battery cell is prevented from falling back to influence the high-voltage area of the battery module; the mica tape is correspondingly positioned above the battery cell explosion-proof valve, so that high-temperature injection objects are prevented from falling back to the upper surface of the battery cell which is not out of control through the first air leakage hole and the second air leakage hole.