Battery module acquisition assembly, battery module and battery pack

Abstract

The utility model discloses a battery module acquisition assembly, a battery module and a battery pack, and relates to the technical field of power batteries. The battery module acquisition assembly specifically comprises a plurality of acquisition sheets which are in one-to-one correspondence with single batteries in a battery module and are used for acquiring voltage and / or temperature parameters of the single batteries; the flexible circuit board is provided with transmission channels in one-to-one correspondence with the acquisition sheets and is used for transmitting the voltage and / or temperature parameters acquired by the acquisition sheets; and the female end socket is provided with pins in one-to-one correspondence with the transmission channels, and the pins can customize data types according to electrode types of the single batteries connected with the corresponding acquisition sheets so as to realize universality of the acquisition assembly. On the premise that safety and performance of a battery pack are guaranteed, universality of a module collection assembly is achieved, production cost is reduced, assembling efficiency is improved, and the error rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially relates to battery module collection subassembly, battery module and battery package. BACKGROUND

[0002] New energy power battery is increasingly widely used in the field such as electric vehicle, energy storage system, and one of its core components is battery module. Battery module is composed of multiple single batteries in series or parallel, and the voltage and temperature of each single battery are collected and monitored in real time through module collection subassembly to ensure the safety and performance stability of the battery. The single information collected by the module collection subassembly is uploaded to the slave of the battery management system (BMS, Battery Management System) through the low-voltage wire harness for processing, realizing the monitoring and management of the single information.

[0003] When arranging the modules in the battery pack, considering the safety and cost factors, the distance between the total positive electrode and the total negative electrode of the battery pack is usually as far as possible to reduce the safety hidden danger caused by high voltage. At the same time, the outgoing copper bar of the total positive electrode and the total negative electrode should be as short as possible to reduce the resistance and energy loss. In addition, in order to optimize the internal space layout of the battery pack, the series copper bar between multiple modules should also be as short as possible. These design requirements result in the existence of multiple different modules in one battery pack, and each module needs a corresponding module collection subassembly.

[0004] However, the use of multiple module collection subassemblies brings a series of problems. First, the design and development of multiple module collection subassemblies require additional time and resources, increasing the design cost. Second, in the production process, the assembly process of different module collection subassemblies is complex, increasing the production and assembly time. In addition, in the assembly process of the module collection cover plate, due to the large number of module collection subassemblies, it is easy to cause assembly errors, affecting production efficiency and product quality. Finally, the use of multiple module collection subassemblies increases the management difficulty of material and drawing types, further increasing the production cost and management complexity.

[0005] Therefore, under the premise of ensuring the safety and performance of the battery pack, how to realize the universality of the module collection subassembly, reduce the production cost, improve the assembly efficiency, and reduce the error rate has become a technical problem to be solved. Utility model content

[0006] The main purpose of the utility model is to provide a battery module collection subassembly, a battery module and a battery pack, which aims to realize the universality of the module collection subassembly, reduce the production cost, improve the assembly efficiency, and reduce the error rate under the premise of ensuring the safety and performance of the battery pack.

[0007] In order to realize the above purpose, the utility model provides a battery module collection subassembly, comprising:

[0008] a plurality of acquisition pieces corresponding to each single battery in the battery module, for acquiring voltage and / or temperature parameters of each single battery;

[0009] a flexible circuit board provided with transmission channels corresponding to the acquisition pieces, for transmitting the voltage and / or temperature parameters acquired by the acquisition pieces; and

[0010] a female socket provided with pins corresponding to the transmission channels, the pins being able to customize data types according to electrode types of the single batteries connected by the corresponding acquisition pieces, so as to realize universality of the acquisition assembly.

[0011] By one-to-one correspondence between the plurality of acquisition pieces and the battery monomers, multi-point data acquisition of the battery pack is realized, and the voltage and temperature information of each battery can be acquired in real time, which helps to improve the accuracy of the battery management system. The use of the flexible circuit board enables the acquisition assembly to adapt to various complex battery module arrangements, enhancing the installability and reliability of the system. The pins of the female socket can customize data types according to different electrode types, giving the acquisition assembly strong universality, which can adapt to battery modules of the same type with opposite polarities. The production cost is reduced, the assembly efficiency is improved, and the error rate is reduced.

[0012] In an embodiment of the present application, further comprising:

[0013] a plurality of bus copper bars corresponding to the single batteries in the battery module, for realizing series and / or parallel connection of each single battery in the corresponding battery module, and each acquisition piece being connected to the bus copper bar and corresponding to each bus copper bar.

[0014] The bus copper bar, the single battery and the acquisition piece are closely combined, effectively utilizing the space. The arrangement of the bus copper bar corresponds to the single battery, making the current path shortest and reducing the transmission loss of electric energy. This structure also facilitates subsequent installation and maintenance. Each acquisition piece is connected to the corresponding bus copper bar, which can accurately acquire the operating state (such as voltage, temperature, etc.) of each single battery, providing accurate data support for the battery management system and facilitating state monitoring and management of the entire battery module.

[0015] In an embodiment of the present application, further comprising an insulating support, the flexible circuit board and the bus copper bar being connected to the insulating support.

[0016] The application of the insulating support ensures that the bus copper bar and the flexible circuit board are electrically isolated from the outside, improving the safety and reliability of the entire system.

[0017] In an embodiment of the present application, the female socket is provided with a foolproof piece limiting the plug-in direction of the flexible circuit board.

[0018] The setting of the foolproof part ensures that the flexible circuit board can only be inserted into the female port in a unique correct direction, which greatly reduces the risk of incorrect insertion. For complex circuits such as battery management systems, incorrect insertion may cause circuit short circuit, signal error or damage the device. Therefore, the addition of the foolproof part effectively prevents human error and improves the reliability of the entire system. At the same time, due to the presence of the foolproof part, the assembler can quickly and accurately perform the insertion without having to spend time checking the insertion direction. It can reduce the error rate and rework, improve the assembly efficiency, save production time and cost.

[0019] In an embodiment of the present application, the collection sheet is a nickel sheet.

[0020] The collection sheet is set to a nickel sheet. Nickel has good electrical conductivity and can effectively transmit current to ensure the accuracy of voltage collection. At the same time, nickel has strong corrosion resistance in various environments and can remain stable during battery operation to extend the service life.

[0021] The above-mentioned materials all have good electrical insulation properties, which can effectively prevent current leakage and ensure the safety of the battery system. At the same time, since its cost is relatively low, it is beneficial to reduce production costs.

[0022] The present application also discloses a battery module comprising the battery module collection assembly as described above.

[0023] The present application also discloses a battery pack comprising the battery module as described above.

[0024] By using the above technical scheme, the multiple collection sheets are one-to-one corresponding to the battery monomers, realizing the multi-point data collection of the battery pack, which can obtain the voltage and temperature information of each battery in real time, and helps to improve the accuracy of the battery management system. The use of the flexible circuit board enables the collection assembly to adapt to various complex battery module arrangements, enhancing the installability and reliability of the system. The pins of the female port can customize the data type according to different electrode types, giving the collection assembly strong versatility, which can adapt to battery modules of the same specification and opposite polarity. It reduces production costs, improves assembly efficiency, and reduces error rate. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be described in detail below with specific embodiments and drawings, in which:

[0026] Figure 1 It is a structural schematic diagram of the first embodiment of the present application;

[0027] Figure 2 It is an explosion schematic diagram of the battery pack;

[0028] Figure 3 For Figure 2 Enlarged structural schematic view at A in the middle;

[0029] 10, acquisition sheet; 20, flexible circuit board; 30, copper bus bar; 40, battery module; 50, female end socket. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make a detailed description of the utility model in combination with the drawings and examples. It should be understood that the following specific examples are only used to explain the utility model, and do not constitute limitation to the utility model.

[0031] As Figures 1 to 3 shown, in order to realize the above-mentioned purpose, the utility model provides a battery module 40 acquisition assembly, which comprises:

[0032] A plurality of acquisition sheets 10, the acquisition sheet 10 is one-to-one corresponding to each single battery in the battery module 40, and is used to acquire the voltage and / or temperature parameter of each single battery;

[0033] Flexible circuit board 20, which is provided with a transmission channel corresponding to the acquisition sheet 10, is used to transmit the voltage and / or temperature parameter acquired by the acquisition sheet 10;And

[0034] Female end socket 50, which is provided with a pin corresponding to the transmission channel, the pin can customize the data type according to the electrode type of the single battery connected to the corresponding acquisition sheet 10, so as to realize the universality of the acquisition assembly.

[0035] Specifically, the acquisition sheet 10 is one-to-one corresponding to each single battery in the battery module 40, and is mainly used to acquire the voltage and / or temperature parameter of the battery. The acquisition sheet 10 has excellent conductivity and corrosion resistance to ensure long-term stable electrical connection and data transmission. The acquisition sheet 10 can adopt copper foil, nickel or silver-plated metal materials, and an insulating coating or protective film is added on the surface to enhance the durability. The acquisition sheet 10 is a small sheet or sheet structure, which can be directly connected to the positive and negative electrodes of the battery. It can be conceived that in order to realize the series and parallel connection of each single battery, the positive and negative electrodes of each single battery are usually connected to the copper bus bar 30, in order to avoid interference, the acquisition sheet 10 can be connected to the copper bus bar 30 to realize data acquisition.

[0036] The flexible circuit board 20 is used to transmit the voltage or temperature parameters collected by the collection sheet 10. The flexible circuit board 20 can be made of polyimide, polyester or other high polymer materials, and has the characteristics of good flexibility and high heat resistance. Such materials allow the circuit board to be wired in a small space while being able to withstand the vibration and displacement of the battery module 40. The flexible circuit board 20 integrates transmission channels corresponding to the collection sheet 10, which are connected to the collection sheet 10 through wires or conductor paths to transmit battery data to an external control system.

[0037] The female socket 50 is provided with pins corresponding to the transmission channels of the flexible circuit board 20, which serves as an interface for data transmission. The pins of the female socket 50 are tightly connected to the flexible circuit board 20, and the data type can be customized according to the electrode type (positive or negative) of each single battery, so that the collection assembly has universality. The female socket 50 uses a plastic or polymer shell to provide insulation protection, and the pins are made of gold-plated or tin-plated copper or other metals with excellent conductivity to ensure stable data transmission.

[0038] The collection sheet 10 is connected to the transmission channel on the flexible circuit board 20 through wires or welding, and the collection sheet 10 is directly attached or indirectly connected to the electrode of the single battery to collect voltage or temperature parameters.

[0039] The transmission channel on the flexible circuit board 20 is connected to the pins of the female socket 50 to form an electrical path, and data is transmitted to the external battery management system through the pins.

[0040] The female socket 50 serves as a data output interface and is connected to the external battery management system through a weak current cable to realize data transmission and processing.

[0041] By using the above technical scheme, the multiple collection sheets 10 are one-to-one corresponding to the battery monomers to realize multi-point data collection of the battery pack, which can obtain the voltage and temperature information of each battery in real time, and helps to improve the accuracy of the battery management system. The use of the flexible circuit board 20 enables the collection assembly to adapt to various complex battery module 40 arrangements, enhancing the installability and reliability of the system. The pins of the female socket 50 can customize the data type according to different electrode types, giving the collection assembly strong universality and enabling it to adapt to battery modules 40 of the same size but opposite polarity. This reduces production costs, improves assembly efficiency, and reduces error rates.

[0042] In an embodiment of the present application, further comprising:

[0043] A plurality of copper bus bars 30 correspond to the single batteries in the battery module 40, and are used to realize the series and / or parallel connection of each single battery in the corresponding battery module 40. Each collection sheet 10 is connected to the copper bus bar 30 and corresponds to each copper bus bar 30.

[0044] Specifically, the plurality of copper bus bars 30 are used to connect a plurality of single batteries to form a series or parallel battery module 40. Each copper bus bar 30 corresponds to a single battery in the battery module 40. The battery module 40 is composed of a plurality of single batteries. Each single battery is connected to a copper bus bar 30 for conducting current. The collection sheet 10 is responsible for collecting the voltage, current and other parameter information of the single battery and transmitting it to the corresponding management system. These collection sheets 10 are connected to the copper bus bar 30 by mechanical fixation or welding, and correspond to each copper bus bar 30. The copper bus bar 30 is made of copper, which has excellent electrical conductivity and can effectively reduce the power loss during current transmission. In order to improve corrosion resistance or reduce cost, the surface of the copper bus bar can be tinned, nickel-plated or silver-plated.

[0045] Each copper bus bar 30 is connected to the single battery electrode by mechanical fasteners (such as screws, rivets) or welding. This connection method can ensure stable transmission of current and mechanical stability of the battery module 40. The copper bus bars 30 are arranged in parallel and arranged in series or parallel relationship with a plurality of single batteries. The collection sheet 10 is fixed on the copper bus bar 30 and connected by crimping, welding or clamping to ensure reliability and stability when collecting battery data. Each collection sheet 10 corresponds to a copper bus bar 30 and is installed according to the arrangement order of the battery.

[0046] The above technical solution combines the copper bus bar 30, the single battery and the collection sheet 10 closely, effectively utilizing the space. The arrangement of the copper bus bar 30 corresponds to the single battery, making the current path shortest and reducing the transmission loss of electrical energy. This structure also facilitates subsequent installation and maintenance. Each collection sheet 10 is connected to the corresponding copper bus bar 30, which can accurately collect the operating state (such as voltage, temperature, etc.) of each single battery, providing accurate data support for the battery management system and facilitating the state monitoring and management of the entire battery module 40.

[0047] In an embodiment of the present application, an insulating support is further included, and the flexible circuit board 20 and the copper bus bar 30 are both connected to the insulating support.

[0048] The above technical solution ensures that the copper bus bar 30 and the flexible circuit board 20 are electrically isolated from the outside, improving the safety and reliability of the entire system.

[0049] In an embodiment of the present application, the female end socket 50 is provided with a fool-proof part for defining the insertion direction of the flexible circuit board 20.

[0050] With the above technical solution, the fool-proof part ensures that the flexible circuit board 20 can only be inserted into the female end socket 50 in a unique correct direction, which greatly reduces the risk of incorrect insertion. For complex circuits such as battery management systems, incorrect insertion may cause circuit short circuit, signal error or damage to the equipment. Therefore, the addition of the fool-proof part effectively prevents human error and improves the reliability of the entire system. At the same time, due to the presence of the fool-proof part, the assembler can quickly and accurately perform the insertion without having to spend time checking the insertion direction. It can reduce the error rate and rework, improve the assembly efficiency, save production time and cost.

[0051] In an embodiment of the present application, the collection sheet 10 is a nickel sheet.

[0052] With the above technical solution, the collection sheet 10 is set as a nickel sheet. Nickel has good conductivity and can effectively transfer current to ensure the accuracy of voltage collection. At the same time, nickel has strong corrosion resistance in various environments and can remain stable during battery operation, prolonging the service life.

[0053] In an embodiment of the present application, the insulating support is at least one of polyvinyl chloride, polyethylene, polytetrafluoroethylene, polypropylene, polystyrene, and polyimide.

[0054] With the above technical solution, the above materials all have good electrical insulation properties, which can effectively prevent current leakage and ensure the safety of the battery system. At the same time, since the cost is relatively low, it is beneficial to reduce production costs.

[0055] The present application also discloses a battery module comprising the battery module collection assembly as described above.

[0056] The present application also discloses a battery pack comprising the battery module as described above.

[0057] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the content of the present application specification and drawings is included in the patent protection scope of the present application.

Claims

1. A battery module data acquisition component, characterized in that, The application relates to a battery module acquisition assembly. A plurality of acquisition sheets correspond to individual single batteries in a battery module, and are used to acquire voltage and / or temperature parameters of the individual single batteries. A flexible circuit board is provided with transmission channels corresponding to the acquisition sheets, and is used to transmit the voltage and / or temperature parameters acquired by the acquisition sheets. A female end socket is provided with pins corresponding to the transmission channels, and the pins can customize data types according to electrode types of the single batteries connected to the corresponding acquisition sheets, so that the acquisition assembly is universal.

2. The battery module harvesting assembly of claim 1, wherein, The application further relates to a plurality of bus copper bars corresponding to the single batteries in the battery module, and used to realize series connection and / or parallel connection of the individual single batteries in the corresponding battery module. Each acquisition sheet is connected to the bus copper bar and corresponds to the bus copper bar.

3. The battery module harvesting assembly of claim 2, wherein, An insulating support is connected to the flexible circuit board and the bus copper bar.

4. The battery module harvesting assembly of claim 1, wherein, The female end socket is provided with an anti-fumble piece for limiting the insertion direction of the flexible circuit board.

5. The battery module harvesting assembly of claim 1, wherein, The acquisition sheet is a nickel sheet.

6. A battery module, characterized by The application further relates to a battery module comprising the acquisition assembly as claimed in any one of claims 1 to 5.

7. A battery pack, characterized by, The application further relates to a battery module as claimed in claim 6.

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