WO2024011798A1 - 线束隔离板总成及电池模组 - Google Patents

线束隔离板总成及电池模组 Download PDF

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Publication number
WO2024011798A1
WO2024011798A1 PCT/CN2022/130819 CN2022130819W WO2024011798A1 WO 2024011798 A1 WO2024011798 A1 WO 2024011798A1 CN 2022130819 W CN2022130819 W CN 2022130819W WO 2024011798 A1 WO2024011798 A1 WO 2024011798A1
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WIPO (PCT)
Prior art keywords
circuit board
plate
wire harness
isolation plate
mounting plate
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Ceased
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PCT/CN2022/130819
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English (en)
French (fr)
Inventor
刘会会
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Eve Power Co Ltd
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Eve Power Co Ltd
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Publication date
Application filed by Eve Power Co Ltd filed Critical Eve Power Co Ltd
Publication of WO2024011798A1 publication Critical patent/WO2024011798A1/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application relates to the field of batteries, for example, to a wire harness isolating plate assembly and a battery module.
  • Power battery modules mostly use wire harness isolation plates to isolate the battery core from the low-voltage sampling wire harness, which plays a role in isolating the sampling wire harness and the battery core.
  • the wiring harness isolation board is equipped with a flexible circuit board (Flexible Printed Circuit, FPC) and a temperature collector connected to the FPC.
  • FPC Flexible Printed Circuit
  • This application provides a wire harness isolation plate assembly and a battery module to solve the problem of inaccurate temperature collection.
  • a wire harness isolating plate assembly including:
  • the isolation plate is provided with through holes
  • a flexible circuit board includes a circuit board body and a connecting component.
  • the first end of the connecting component is connected to the circuit board body, and the second end is inserted into the through hole;
  • a temperature acquisition component is connected to the second end of the connection component, and the temperature acquisition component is configured to collect the temperature of the battery core.
  • connection component includes a mounting plate and a connecting portion, the connecting portion connects the circuit board body and the mounting plate, the temperature acquisition component is connected to the mounting plate, and the connecting portion passes through The through hole is provided such that the circuit board body and the mounting plate are located on both sides of the isolation plate, and the mounting plate is arranged toward the battery core.
  • the temperature acquisition component includes a thermistor, and the thermistor is disposed on a side of the mounting plate facing the isolation plate.
  • the temperature acquisition component further includes a first printed circuit board.
  • the first printed circuit board and the thermistor are provided on both sides of the mounting board.
  • the first printed circuit board The circuit board can be attached to the battery core.
  • the temperature collection component further includes a buffer pad, and both sides of the buffer pad are respectively attached to the thermistor and the isolation plate.
  • the cross-sectional area of the mounting plate is larger than the cross-sectional area of the thermistor, and the thermistor is disposed in the middle of the mounting plate.
  • the isolation plate is provided with a shelter, and at least part of the temperature collection component is located in the shelter.
  • a connector component is provided on a side of the isolation board away from the mounting board, and the connector component includes a second printed circuit board and a second printed circuit board fixed on the second printed circuit board. a low-voltage connector, and the second printed circuit board is snap-connected to the isolation board.
  • it also includes a buckle fixedly arranged on the isolation plate, the isolation plate is provided with an escape hole, and the buckle is provided with a plug exposed in the escape hole and capable of being welded to the battery core.
  • Welding area, the welding area is provided with positioning holes, and the positioning holes are configured to position the electrodes of the battery core.
  • the buckle is further provided with a non-welded area exposed to the escape hole, and the non-welded area is provided with an observation hole.
  • a nickel piece is further included, the nickel piece is connected to the bar piece and the flexible circuit board respectively, and the nickel piece is configured to collect the voltage of the battery core.
  • a battery module including the above-mentioned wire harness isolation plate assembly.
  • This application provides a wire harness isolating plate assembly and a battery module. Since the flexible circuit board is provided with a connecting component, the isolating plate is provided with a through hole, and the connecting component passes through the through hole, the temperature acquisition component is connected to the connecting component; and directly Compared with the related technology of arranging the temperature acquisition component on the flexible circuit board, this application sets the connection component to keep the temperature acquisition component away from or isolated from the circuit board body, thereby effectively reducing the temperature acquisition component from being affected by the heat of the circuit board body. This further improves the accuracy of the temperature acquisition component in collecting the temperature of the battery core.
  • Figure 1 is a schematic structural diagram of a wire harness isolation plate assembly provided by a specific embodiment of the present application
  • Figure 2 is a bottom view of the wire harness isolation plate assembly provided by a specific embodiment of the present application.
  • Figure 3 is an exploded view of the wire harness isolation plate assembly provided by a specific embodiment of the present application.
  • Figure 4 is an enlarged view of point A in Figure 3;
  • FIG. 5 is an enlarged view of B in FIG. 3 .
  • Temperature acquisition component 31. Thermistor; 32. First printed circuit board; 33. Cushion pad;
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • the specific meanings of the above terms in this application can be understood on a case-by-case basis.
  • the term “above” or “below” a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • This embodiment provides a wire harness isolation plate assembly, as shown in Figures 1 to 3, including an isolation plate 1, a flexible circuit board 2 and a temperature collection component 3.
  • the isolation plate 1 is provided with a through hole 12; the flexible circuit board 2 It includes a circuit board body 21 and a connecting component. The first end of the connecting component is connected to the circuit board body 21, and the second end is passed through the through hole 12; the temperature collecting component 3 is connected to the second end of the connecting component, and the temperature collecting component 3 is provided To collect the temperature of the battery core.
  • the isolating plate 1 is provided with a through hole 12 and the connecting component passes through the through hole 12, the temperature acquisition component 3 is connected to the connecting component, and when the wire harness isolating plate assembly is installed on the battery module, due to The components on the circuit board body 21 are likely to generate heat during operation.
  • the connection components provided in this embodiment can keep the temperature collection component 3 away from the circuit board body 21, that is, the temperature collection component 3 is isolated from the circuit board body 21. This can effectively reduce the impact of the heat generated by the circuit board body 21 on the temperature collection component 3, and improve the accuracy of the temperature collection component 3 in collecting the battery core temperature.
  • the surface structure shown in Figure 1 and Figure 2 are the structures of two opposite surfaces of the wire harness isolation plate assembly.
  • the temperature collection component 3 can be attached to the battery core, which can improve the accuracy of temperature collection.
  • the connection component includes a mounting plate 22 and a connecting part 23.
  • the connecting part 23 connects the circuit board body 21 and the mounting plate 22.
  • the temperature acquisition component 3 is connected to the mounting plate 22, and the connecting part 23 passes through the through hole 12.
  • the circuit board body 21 and the mounting plate 22 are located on both sides of the isolation plate 1, and the mounting plate 22 is arranged toward the battery core.
  • the structure and position of the mounting plate 22 are adjusted accordingly according to the cell structure and the position of the explosion-proof valve, thereby adjusting the temperature.
  • the collection component 3 enables the temperature collection component 3 to avoid the position of the explosion-proof valve, thereby improving the accuracy of temperature collection.
  • the isolation plate 1 is provided with a through hole 12, and the mounting plate 22 is provided on the first side of the isolation plate 1 through the through hole 12, the isolation plate 1 described here is The first side is the side of the isolation plate 1 facing away from the circuit board body 21.
  • the temperature acquisition component 3 is connected to the mounting plate 22 and is installed on the side of the isolation plate 1 facing away from the circuit board body 21.
  • the wire harness isolation plate assembly is installed on the battery module. When assembled, the temperature acquisition component 3 is set to collect the temperature of the battery core, and the temperature acquisition component 3 is set toward the battery core, which can improve the accuracy of collecting temperature of the battery core.
  • the temperature acquisition component 3 includes a thermistor 31, through which the temperature is collected.
  • the thermistor 31 has a negative temperature.
  • Thermistor 31 with Negative Temperature Coefficient (NTC) for example, the thermistor 31 is provided on the side of the mounting plate 22 facing the isolation plate 1.
  • NTC Negative Temperature Coefficient
  • the thermistor 31 is changed from the bottom to the top of the mounting plate 22 to avoid direct contact between the thermistor 31 and the battery core and other structures, prevent damage, and improve the temperature accuracy.
  • the bottom of the mounting plate here means that the mounting plate 22 faces the battery core.
  • the side above the mounting plate refers to the side of the mounting plate 22 facing the isolation plate 1 . It should be noted that in Figure 4, in order to clearly see the thermistor 31, the temperature acquisition component 3 is rotated 90 degrees. In fact, the thermistor 31 faces the circuit board body 21, that is, the thermistor 31 faces the isolation plate 1.
  • the temperature acquisition component 3 also includes a first printed circuit board 32.
  • the first printed circuit board 32 and the thermistor 31 are provided on both sides of the mounting plate 22.
  • the printed circuit board 32 can be attached to the battery core.
  • the first printed circuit board 32 has high hardness and high structural strength. It will not deform when attached to the battery core, improves detection accuracy, and can protect the thermistor 31 .
  • the temperature acquisition component 3 further includes a buffer pad 33 , and both sides of the buffer pad 33 are respectively attached to the thermistor 31 and the isolation plate 1 .
  • the cushion pad 33 may be made of foam. If the thermistor 31 is attached to the isolation board 1 through the buffer pad 33, the thermistor 31 will be prevented from warping, which facilitates assembly and improves production efficiency; and the buffer pad 33 has a buffering effect to prevent the battery core from being unable to fit due to unevenness. core to improve temperature measurement accuracy.
  • the thickness of the cushion pad 33 can be increased, the thickness of the mounting plate 22 can be reduced, or the thickness of the mounting plate 22 can be avoided to be adjusted, so that the thermistor 31 and the battery core can be closely attached, thereby improving applicability.
  • the cross-sectional area of the mounting plate 22 is larger than the cross-sectional area of the thermistor 31, and the thermistor 31 is located in the middle of the mounting plate 22.
  • the thermistor 31 is bonded to the mounting plate 22, which improves the reliability of the structural connection.
  • the thermistor 31, the buffer pad 33 and the first printed circuit board 32 are set at the same time.
  • the thermistor 31 and its installation are changed. Installation direction between plates 22. For example, the thermistor 31 , the buffer pad 33 , the first printed circuit board 32 , the isolation board 1 and the mounting board 22 are all bonded together through glue.
  • the isolation plate 1 is provided with an escape groove 11, and at least part of the temperature collection assembly 3 is located in the escape groove 11.
  • the escape groove 11 is configured to accommodate the temperature collection assembly 3 to prevent If there is structural interference with the battery core, the depth of the shelter 11 and the height of the temperature acquisition component 3 accommodated in the shelter 11 can be set with reference to the battery core structure, and are not limited.
  • the explosion-proof valve of the battery core is located on the side of the isolation plate 1 away from the circuit board body 21 to prevent the temperature acquisition component 3 from being located at the explosion-proof valve position of the battery core. Once thermal runaway occurs in the battery core, the temperature at the explosion-proof valve position will rise rapidly, which can easily lead to a large deviation between the collected temperature and the actual battery core temperature. Positioning the temperature collecting component 3 away from the explosion-proof valve improves the measurement accuracy.
  • the wire harness isolating plate assembly also includes a connector assembly 4 located on the side of the isolating plate 1 away from the mounting plate 22.
  • the connector assembly 4 includes a second printed circuit board 41 and is fixed on the second printed circuit board 41.
  • the low-voltage connector 42 by arranging the second printed circuit board 41 and clamping the second printed circuit board 41 on the isolation plate 1, facilitates the plugging and unplugging of the connector assembly 4, thereby facilitating disassembly and assembly, and improving production.
  • the isolation plate 1 is provided with buckles 13 , and the second printed circuit board 41 is connected to the isolation plate 1 through the buckles 13 . It can be ensured that the installation position of the thermistor 31 and the position of the connector assembly 4 are on the same side of the FPC (in this embodiment, the connector assembly 4 is located above the isolation plate 1).
  • the FPC can be configured as a single panel to achieve temperature control.
  • the electrical connections of the component 3 are collected to facilitate wiring from a single side of the FPC, where the FPC refers to the entire flexible circuit board including the circuit board body 21 , the mounting board 22 and the connecting portion 23 .
  • the FPC is configured as a double panel or a hollow board to allow the temperature acquisition component 3 to collect temperature, which results in a higher cost of the FPC. This embodiment simplifies the wiring process, thereby reducing the production cost.
  • the wire harness isolating plate assembly also includes a bar piece 5 fixedly provided on the isolating plate 1 and configured to be connected to the battery cores to realize series connection or connection between the battery cores. in parallel.
  • the bar 5 is partially thinned at the welding point of the battery core spine, which results in a reduction in the shear force of the welding between the bar 5 and the battery core, and additionally increases the cost.
  • the isolation plate 1 is provided with an escape hole 14, and the bar plate 5 is provided with a welding area 511 that is exposed to the escape hole 14 and can be welded to the battery core.
  • the welding area 511 is provided with a positioning hole 5111, and the positioning hole 5111 is suitable for the battery core. Position the electrodes.
  • the problem of the small shear force between the battery core and the battery 5 is solved by no longer locally thinning the battery core 5 , and the shear force between the battery core and the battery 5 is effectively increased.
  • the bald piece 5 is also provided with a non-welded area exposed to the avoidance hole 14.
  • the non-welded area is provided with an observation hole 5112.
  • the observation hole 5112 is set to observe the weld and confirm the bald piece. 5. Check whether there is a weak solder between the battery core and the battery spine to improve the reliability of voltage collection.
  • the ba sheet 5 includes a series aluminum row 51, a first electrode output composite row 52 and a second electrode output composite row 53.
  • the series aluminum row 51 is configured as a plurality of cells in a series battery module.
  • the first electrode output The composite row 52 and the second electrode output composite row 53 are respectively configured to be connected to external circuits.
  • the wire harness isolation plate assembly also includes a plurality of nickel sheets 6.
  • the nickel sheets 6 are respectively connected to the bar sheet 5 and the flexible circuit board 2.
  • the nickel sheets 6 are configured to collect the voltage of the battery core.
  • the nickel sheet 6 is welded to the bar sheet 5 through ultrasonic waves, and the nickel sheet 6 and the circuit board body 21 are connected by soldering, and then both sides of the nickel sheet 6 are covered with polyimide (PI). ) film to protect the circuit and prevent oxidation.
  • PI polyimide
  • the isolation plate 1 is provided with a flexible circuit board 2, a temperature acquisition component 3, a connector component 4, a buckle 5 and a nickel sheet 6, so that they can be integrated into one body for incoming materials and reduce the battery pack production process. , reducing production costs and improving the efficient industrialization process of battery packs.
  • the buckle 5 is clamped through a plurality of buckles 13 provided on the isolation plate 1 to achieve fixation; the flexible circuit board 2 is connected through the connecting posts 15 on the isolation plate 1 to achieve
  • the connecting post 15 can be a hot melt post, etc., which is not limited.
  • the above design can not only reduce the cost of FPC, but also increase the accuracy of temperature measurement. At the same time, combined with the liquid cooling system, it can effectively control the temperature of the battery core and battery pack 5.
  • This embodiment also provides a battery module, which includes the above-mentioned wire harness isolation plate assembly.
  • the temperature acquisition component 3 is connected to the mounting plate 22 and is disposed on the side of the isolation plate 1 away from the circuit board body 21.
  • the wire harness isolation plate assembly When installed in the battery module, the temperature collection component 3 is set toward the battery core. It is actually attached to the surface of the battery core, which improves the accuracy of collecting the temperature of the battery core and reduces the cost.
  • the battery module also includes a battery core
  • the ba sheet 5 is configured to connect the battery cells in series or in parallel
  • the temperature acquisition component 3 is configured to collect the temperature of the battery core
  • the nickel sheet 6 is configured to collect the voltage of the battery core;
  • the battery core can be a cylindrical battery core or a square battery core, etc., and is not limited.
  • the liquid cooling system can cool the battery pack 5, and can also control the temperature of the battery pack 5 and the battery core through the flow control in the liquid cooling system. Just refer to the relevant technology and won’t go into details.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种线束隔离板总成及电池模组，属于电池技术领域。线束隔离板总成包括隔离板、柔性电路板和温度采集组件，隔离板开设有通孔；柔性电路板包括电路板本体和连接组件，连接组件第一端连接于电路板本体，第二端穿设于通孔；温度采集组件连接于连接组件的第二端上，温度采集组件设置为采集电芯的温度。

Description

线束隔离板总成及电池模组
本申请要求在2022年7月12日提交中国专利局、申请号为202221789049.6的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池领域，例如涉及一种线束隔离板总成及电池模组。
背景技术
动力电池模组多采用线束隔离板将电芯和低压采样线束隔离开，对采样线束及电芯起到隔离的作用。线束隔离板上设有柔性电路板(Flexible Printed Circuit，FPC)及与FPC连接的温度采集器，相关技术中，由于FPC上还设有其他的元器件，其在运行过程中容易存在发热情况，使与FPC连接的温度采集器容易受到FPC自身发热的影响，导致了采集电芯的温度不准确。
发明内容
本申请提供一种线束隔离板总成及电池模组，解决温度采集不准确的问题。
本申请采用以下技术方案：
第一方面，提供一种线束隔离板总成，包括：
隔离板，隔离板开设有通孔；
柔性电路板，包括电路板本体和连接组件，所述连接组件第一端连接于所述电路板本体，第二端穿设于所述通孔；
温度采集组件，连接于所述连接组件的第二端上，所述温度采集组件设置为采集所述电芯的温度。
在一实施例中，所述连接组件包括安装板和连接部，所述连接部连接所述电路板本体与所述安装板，所述温度采集组件连接于所述安装板，所述连接部穿设于所述通孔使所述电路板本体和所述安装板位于所述隔离板的两侧，所述安装板朝向电芯设置。
在一实施例中，所述温度采集组件包括热敏电阻，所述热敏电阻设于所述安装板朝向所述隔离板的一侧。
在一实施例中，所述温度采集组件还包括第一印制电路板，所述第一印制 电路板和所述热敏电阻设于所述安装板的两侧，所述第一印制电路板能够贴设于所述电芯。
在一实施例中，所述温度采集组件还包括缓冲垫，所述缓冲垫的两侧分别贴设于所述热敏电阻和所述隔离板。
在一实施例中，所述安装板的横截面积大于所述热敏电阻的横截面积，所述热敏电阻设于所述安装板的中间位置。
在一实施例中，所述隔离板设有避空槽，至少部分所述温度采集组件位于所述避空槽内。
在一实施例中，还包括设于所述隔离板背离所述安装板一侧的连接器组件，所述连接器组件包括第二印制电路板和固定于所述第二印制电路板上的低压连接器，所述第二印制电路板卡接于所述隔离板上。
在一实施例中，还包括固定设置于所述隔离板上的巴片，所述隔离板设有避让孔，所述巴片设有裸露于所述避让孔且能够与所述电芯焊接的焊接区，所述焊接区设有定位孔，所述定位孔设置为对所述电芯的电极进行定位。
在一实施例中，所述巴片还设有裸露于所述避让孔的非焊接区，所述非焊接区设有观察孔。
在一实施例中，还包括镍片，所述镍片分别连接于所述巴片和所述柔性电路板，所述镍片设置为采集所述电芯的电压。
第二方面，提供一种电池模组，包括上述的线束隔离板总成。
本申请的有益效果：
本申请提供的一种线束隔离板总成及电池模组，由于柔性电路板设置了连接组件、隔离板设置了通孔且连接组件穿过通孔，温度采集组件连接在连接组件上；与直接将温度采集组件设置在柔性电路板上的相关技术进行相比，本申请设置连接组件让温度采集组件与电路板本体远离或相隔离，从而能够有效减少温度采集组件受到电路板本体的发热影响，进而提高了温度采集组件对电芯采集温度的准确性。
附图说明
图1是本申请的具体实施方式提供的线束隔离板总成的结构示意图；
图2是本申请的具体实施方式提供的线束隔离板总成的仰视图；
图3是本申请的具体实施方式提供的线束隔离板总成的爆炸图；
图4是图3的A处放大图；
图5是图3的B处放大图。
图中：
1、隔离板；11、避空槽；12、通孔；13、卡扣；14、避让孔；15、连接柱；
2、柔性电路板；21、电路板本体；22、安装板；23、连接部；
3、温度采集组件；31、热敏电阻；32、第一印制电路板；33、缓冲垫；
4、连接器组件；41、第二印制电路板；42、低压连接器；
5、巴片；51、串联铝排；511、焊接区；5111、定位孔；5112、观察孔；52、第一电极输出复合排；53、第二电极输出复合排；
6、镍片。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
本实施例提供了一种线束隔离板总成，如图1-图3所示，包括隔离板1、柔性电路板2和温度采集组件3，隔离板1开设有通孔12；柔性电路板2包括电路板本体21和连接组件，连接组件第一端连接于电路板本体21，第二端穿设于通孔12；温度采集组件3连接于连接组件的第二端上，温度采集组件3设置为采集电芯的温度。由于柔性电路板2设置了连接组件、隔离板1设置了通孔12且连接组件穿过通孔12，温度采集组件3通过连接于连接组件，线束隔离板总成安装于电池模组时，由于电路板本体21上的元器件在运行过程中容易存在发热情况，本实施例所设置的连接组件能够使得温度采集组件3远离电路板本体21，即使得温度采集组件3与电路板本体21隔离，从而能够有效减少电路板本体21发热对温度采集组件3造成的影响，提高了温度采集组件3对电芯采集温度的准确性。图1中展示的表面结构和图2分别是线束隔离板总成两个相对表面的结构。
示例性地，温度采集组件3能够贴设于电芯，能提高温度采集的准确性。
在一种实施例中，连接组件包括安装板22和连接部23，连接部23连接电路板本体21与安装板22，温度采集组件3连接于安装板22，连接部23穿设于通孔12使电路板本体21和安装板22位于隔离板1的两侧，安装板22朝向电芯设置。相对于相关技术中，将FPC上的温度采集点位于防爆阀位置，容易导致温度采集不准确，本方案中，通过根据电芯结构及防爆阀位置相应调整安装板22结构及位置，从而调节温度采集组件3，使温度采集组件3避开防爆阀位置，进而提高了温度采集的准确性。
由于本实施例的柔性电路板2设置了安装板22、隔离板1设置了通孔12且安装板22穿过通孔12设于隔离板1的第一侧，这里所述的隔离板1的第一侧即隔离板1背离电路板本体21的一侧，温度采集组件3通过连接于安装板22而设置在隔离板1背离电路板本体21的一侧，线束隔离板总成安装于电池模组时，温度采集组件3设置为采集电芯温度，温度采集组件3朝向电芯设置，能够提高电芯采集温度的准确性。
在一种实施例中，如图4所示，温度采集组件3包括热敏电阻31，通过热敏电阻31实现了温度采集，示例性地，本实施例中，热敏电阻31为具有负温度系数(Negative Temperature Coefficient，NTC)的热敏电阻31；示例性地，热敏电阻31设于安装板22朝向隔离板1的一侧，通过改变热敏电阻31与安装板22的相对位置，即热敏电阻31由安装板22的下方改至上方，避免热敏电阻31与电芯等结构直接接触，防止发生损伤，提高了温度精度，此处安装板的下方是指安装板22朝向电芯的一侧，安装板的上方是指安装板22朝向隔离板1的一侧。需要注意的是，图4中为了能够清楚看到热敏电阻31，将温度采集组件3旋转90度，实际上热敏电阻31面向电路板本体21，即热敏电阻31面向隔离板1。
在一种实施例中，如图4所示，温度采集组件3还包括第一印制电路板32，第一印制电路板32和热敏电阻31设于安装板22的两侧，第一印制电路板32能够贴设于电芯，第一印制电路板32硬度大、结构强度较高，贴设于电芯时不会发生变形，提高检测精度，且能够保护热敏电阻31。
在一种实施例中，如图4所示，温度采集组件3还包括缓冲垫33，缓冲垫33的两侧分别贴设于热敏电阻31和隔离板1。示例性地，缓冲垫33可采用泡棉。如果将热敏电阻31通过缓冲垫33贴在隔离板1上，避免热敏电阻31起翘，便于组装进而提高生产效率；并且缓冲垫33具有缓冲作用，避免因为电芯不平而无法贴合电芯，提高温度测量准确性。另外，可以根据实际情况通过增加缓冲垫33的厚度，减小安装板22的厚度或者避免调整安装板22厚度，将热敏电阻31与电芯进行紧密的贴合，提高了适用性。
在一种实施例中，如图4所示，安装板22的横截面积大于热敏电阻31的 横截面积，热敏电阻31设于安装板22的中间位置。热敏电阻31粘接于安装板22上，提高了结构连接可靠性，在热敏电阻31和安装板22之间打胶时，能够方便热敏电阻31打胶，避免热敏电阻31外漏造成的氧化、短路等问题。本实施例中，如图4所示，同时设置热敏电阻31、缓冲垫33和第一印制电路板32，通过对热敏电阻31叠层方式的处理，改变了热敏电阻31及安装板22之间的安装方向。示例性地，热敏电阻31、缓冲垫33、第一印制电路板32、隔离板1及安装板22之间均通过打胶粘接。
在一种实施例中，如图2所示，隔离板1设有避空槽11，至少部分温度采集组件3位于避空槽11内，避空槽11设置为容置温度采集组件3，防止与电芯发生结构干涉，避空槽11的深度大小及温度采集组件3容置于避空槽11的高度大小可参照电芯结构进行设置，不作限定。
在一种实施例中，电芯的防爆阀位于隔离板1背离电路板本体21的一侧，避免温度采集组件3位于电芯的防爆阀位置，电芯一旦发生热失控，防爆阀位置的温度会迅速升高，容易导致采集温度与实际电芯温度产生较大偏差，将温度采集组件3远离防爆阀位置，提高了测量精度。
当电池模组之间上下堆叠时，两层模组之间使用了支架，占有了隔离板1端部的安装空间，为此，在一种实施例中，如图1、图3和图5所示，线束隔离板总成还包括设于隔离板1背离安装板22一侧的连接器组件4，连接器组件4包括第二印制电路板41和固定于第二印制电路板41上的低压连接器42，通过设置第二印制电路板41及将第二印制电路板41卡接于隔离板1上，有助于连接器组件4的插拔，从而方便拆装，提高生产效率；通过改变连接器组件4与隔离板1的安装方向，优化了结构布局，结合卡接连接方式，解决了因空间不足而导致无法采用传统的热铆固定低压连接器42的问题。本实施例中，隔离板1上设有卡扣13，第二印制电路板41通过卡扣13卡接在隔离板1上。可以保证了热敏电阻31的安装位置与连接器组件4的位置处于FPC的同一面(本实施例中，连接器组件4位于隔离板1的上方)，FPC设置成单面板即可实现与温度采集组件3的电连接，以便于从FPC的单面布线，这里的FPC是指包括电路板本体21、安装板22和连接部23的整个柔性电路板。相较于相关技术中，通过FPC设置成双面板或者镂空板以使温度采集组件3采集温度，导致FPC的成本较高，本实施例简化了布线工艺，从而降低了生产成本。
在一种实施例中，如图1-图3所示，线束隔离板总成还包括固定设置于隔离板1上的巴片5，设置为与电芯连接，实现电芯之间的串联或并联。目前，巴片5在电芯脊柱焊接处局部冲薄，导致巴片5与电芯焊接的剪切力减小，且会额外增加成本。示例性地，隔离板1设有避让孔14，巴片5设有裸露于避让孔14且能够与电芯焊接的焊接区511，焊接区511设有定位孔5111，定位孔5111对电芯的电极进行定位。不再对巴片5进行局部冲薄解决电芯与巴片5之间的剪切力偏小的问题，有效的增大电芯与巴片5之间的剪切力。
在一种实施例中，如图2所示，巴片5还设有裸露于避让孔14的非焊接区，非焊接区设有观察孔5112，观察孔5112设置为观察焊缝，确认巴片5与电芯脊柱之间是否存在虚焊的情况，提高电压采集的可靠性。
示例性地，巴片5包括串联铝排51、第一电极输出复合排52和第二电极输出复合排53，串联铝排51设置为串联电池模组内的多个电芯，第一电极输出复合排52和第二电极输出复合排53分别设置为与外部电路连接。
在一种实施例中，如图3所示，线束隔离板总成还包括若干镍片6，镍片6分别连接于巴片5和柔性电路板2，镍片6设置为采集电芯的电压。示例性地，镍片6通过超声波焊接于巴片5，镍片6与电路板本体21之间通过锡焊进行连接，之后在镍片6的两侧分别覆盖上聚酰亚胺(Polyimide，PI)膜，保护电路，防止氧化，可参照相关结构，不再赘述。
本实施例中，隔离板1上同时设有柔性电路板2、温度采集组件3、连接器组件4、巴片5和镍片6，使其集成为一体进行来料，减少电池包生产工艺流程，降低了生产成本，提升电池包高效的产业化进程。
本实施例中，如图3所示，巴片5通过隔离板1上设置的多个卡扣13卡接，以实现固定；柔性电路板2通过隔离板1上的连接柱15连接，以实现固定，例如连接柱15可以是热熔柱等，不进行限定。
综合以上设计不仅可以降低FPC的成本，还可以增加温度测量的准确度，同时结合液冷系统，能够有效的控制电芯和巴片5的温度。
本实施例还提供一种电池模组，其包括上述的线束隔离板总成，温度采集组件3通过连接于安装板22而设置在隔离板1背离电路板本体21的一侧，线束隔离板总成安装于电池模组时，温度采集组件3朝向电芯设置，实际是将其与电芯表面贴合，提高了对电芯采集温度的准确性，同时减低了成本。
示例性地，电池模组还包括电芯，巴片5设置为串联或并联电芯，温度采集组件3设置为采集电芯的温度，镍片6设置为采集电芯的电压；示例性地，电芯可以是圆柱电芯或方形电芯等，不进行限定。
通过与电池包或者电池模组的液冷系统的结合，液冷系统能够对巴片5进行冷却，同时还能通过液冷系统中的流量控制而实现对巴片5及电芯温度的控制，参照相关技术即可，不再赘述。

Claims (12)

  1. 一种线束隔离板总成，包括：
    隔离板(1)，所述隔离板(1)开设有通孔(12)；
    柔性电路板(2)，包括电路板本体(21)和连接组件，所述连接组件第一端连接于所述电路板本体(21)，第二端穿设于所述通孔(12)；
    温度采集组件(3)，连接于所述连接组件的第二端上，所述温度采集组件(3)设置为采集电芯的温度。
  2. 根据权利要求1所述的线束隔离板总成，其中，所述连接组件包括安装板(22)和连接部(23)，所述连接部(23)连接所述电路板本体(21)与所述安装板(22)，所述温度采集组件(3)连接于所述安装板(22)，所述连接部(23)穿设于所述通孔(12)使所述电路板本体(21)和所述安装板(22)位于所述隔离板(1)的两侧，所述安装板(22)朝向电芯设置。
  3. 根据权利要求2所述的线束隔离板总成，其中，所述温度采集组件(3)包括热敏电阻(31)，所述热敏电阻(31)设于所述安装板(22)朝向所述隔离板(1)的一侧。
  4. 根据权利要求3所述的线束隔离板总成，其中，所述温度采集组件(3)还包括第一印制电路板(32)，所述第一印制电路板(32)和所述热敏电阻(31)设于所述安装板(22)的两侧，所述第一印制电路板(32)能够贴设于所述电芯。
  5. 根据权利要求3所述的线束隔离板总成，其中，所述温度采集组件(3)还包括缓冲垫(33)，所述缓冲垫(33)的两侧分别贴设于所述热敏电阻(31)和所述隔离板(1)。
  6. 根据权利要求3所述的线束隔离板总成，其中，所述安装板(22)的横截面积大于所述热敏电阻(31)的横截面积，所述热敏电阻(31)设于所述安装板(22)的中间位置。
  7. 根据权利要求1-6任一项所述的线束隔离板总成，其中，所述隔离板(1)设有避空槽(11)，至少部分所述温度采集组件(3)位于所述避空槽(11)内。
  8. 根据权利要求3-6任一项所述的线束隔离板总成，还包括设于所述隔离板(1)背离所述安装板(22)一侧的连接器组件(4)，所述连接器组件(4)包括第二印制电路板(41)和固定于所述第二印制电路板(41)上的低压连接器(42)，所述第二印制电路板(41)卡接于所述隔离板(1)上。
  9. 根据权利要求1-6任一项所述的线束隔离板总成，还包括固定设置于所述隔离板(1)上的巴片(5)，所述隔离板(1)设有避让孔(14)，所述巴片(5)设有裸露于所述避让孔(14)且能够与所述电芯焊接的焊接区(511)，所述焊接区(511)设有定位孔(5111)，所述定位孔(5111)设置为对所述电芯的电极进行定位。
  10. 根据权利要求9所述的线束隔离板总成，其中，所述巴片(5)还设有裸露于所述避让孔(14)的非焊接区，所述非焊接区设有观察孔(5112)。
  11. 根据权利要求9所述的线束隔离板总成，还包括镍片(6)，所述镍片(6)分别连接于所述巴片(5)和所述柔性电路板(2)，所述镍片(6)设置为采集所述电芯的电压。
  12. 一种电池模组，包括如权利要求1-11任一项所述的线束隔离板总成。
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JP2020043038A (ja) * 2018-09-13 2020-03-19 株式会社デンソー 電池モジュール
CN210516851U (zh) * 2019-10-23 2020-05-12 江苏塔菲尔动力系统有限公司 一种线数隔离板总成结构及电池模组
CN214625277U (zh) * 2021-02-25 2021-11-05 欣旺达电动汽车电池有限公司 电池模组及其温度采集结构
CN216529238U (zh) * 2021-11-18 2022-05-13 湖北亿纬动力有限公司 一种采集结构及电池模组
CN216928826U (zh) * 2022-01-29 2022-07-08 欣旺达电动汽车电池有限公司 电池模组以及电池包

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