WO2020155988A1 - 用于电池模块的采样电路板及电池模块 - Google Patents

用于电池模块的采样电路板及电池模块 Download PDF

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Publication number
WO2020155988A1
WO2020155988A1 PCT/CN2019/129290 CN2019129290W WO2020155988A1 WO 2020155988 A1 WO2020155988 A1 WO 2020155988A1 CN 2019129290 W CN2019129290 W CN 2019129290W WO 2020155988 A1 WO2020155988 A1 WO 2020155988A1
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WO
WIPO (PCT)
Prior art keywords
sampling
electrical connection
main board
circuit board
hook
Prior art date
Application number
PCT/CN2019/129290
Other languages
English (en)
French (fr)
Inventor
陈思恩
徐守江
冯春艳
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to US17/043,724 priority Critical patent/US11563240B2/en
Priority to EP19912443.9A priority patent/EP3764422B1/en
Publication of WO2020155988A1 publication Critical patent/WO2020155988A1/zh
Priority to US18/066,278 priority patent/US20230112961A1/en

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • 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 battery field, and in particular to a sampling circuit board and a battery module used in a battery module.
  • the voltage sampling and thermal management system inside the battery is the core unit of the battery management system.
  • the low voltage and temperature sampling of the traditional battery module is collected through the wiring harness isolation board.
  • Due to the cumbersome manufacturing process of the wire harness isolation board it is not easy to automate production, low efficiency, and high cost, which can no longer meet the competitive demand of the market.
  • a flexible circuit board can be used as a sampling circuit board to replace the traditional wiring harness isolation board.
  • the sampling circuit board includes a main board and a plurality of sampling terminals extending from the main board.
  • connection process between the main board and the sampling terminal in the sampling circuit board uses brazing, riveting, glue dispensing and other processes.
  • the brazing process is more complicated and the connection is large, which is not conducive to the module sampling structure design.
  • the process steps are complicated, and the glue dispensing process may cause structural glue to penetrate between the two electrical connection surfaces, which increases the contact resistance of the sampling connection.
  • a sampling circuit board for a battery module and a battery module with higher connection stability between the main board and the sampling terminal are desired.
  • the present application provides a sampling circuit board and a battery module for a battery module, which improve the connection stability between the main board and the sampling terminal in the sampling circuit board.
  • an embodiment of the present application provides a sampling circuit board for a battery module, which includes: a main board, including a plurality of electrical connection areas; and a plurality of sampling terminals, which are electrically connected to the multiple electrical connection areas, respectively.
  • a main board including a plurality of electrical connection areas; and a plurality of sampling terminals, which are electrically connected to the multiple electrical connection areas, respectively.
  • One end extends in a direction away from the main board, and each sampling terminal is connected to the electrical connection area of the main board through a connector.
  • the connector includes a main body and at least one hook component.
  • the at least one hook component is disposed on the main body.
  • the hook-shaped component stacks the sampling terminal and the electrical connection area of the main board.
  • each hook-shaped component includes two hook-shaped structures, the hook-shaped structure includes a bent portion and a pressing portion, and the bent portion connects the pressing portion and the main body, so that the pressing portion and An interval space is formed between the main body parts, and the interval space accommodates part of the sampling terminals and part of the electrical connection area of the main board.
  • the main body includes a first boundary and a second boundary that are opposed to each other, the first boundary and the second boundary both extend in the first direction, and the two curved portions of each hook component are Connected to the first boundary and the second boundary.
  • the sampling terminal is provided with two or more first openings spaced apart, the sampling terminal forms an abutting portion between the two or more first openings, and the electrical connection area is located between the sampling terminal and the main body.
  • the bent part passes through the first opening, and the pressing part abuts against the abutting part, so as to laminate the sampling terminal and the electrical connection area of the main board to the main body.
  • the number of the hook-shaped components is two or more, and they are arranged in the first direction, and the abutting portion extends in the first direction.
  • the electrical connection area of the main board is provided with two or more second openings spaced apart, and the curved portion passes through the second opening, wherein the shape of the second opening and the curved portion are parallel to The cross-sectional shape on the surface of the electrical connection area matches.
  • the main board includes a first surface and a second surface opposed to each other, a plurality of electrical connection areas are provided on the first surface of the main board, and the main body of the connector is located on a second surface of the main board.
  • the hook-shaped component passes through the electrical connection area of the main board and the sampling terminal on the second surface of the main board, and presses the sampling terminal and the electrical connection area of the main board to the main body.
  • the sampling circuit board further includes: a connecting terminal disposed on the second surface of the main board.
  • the present application provides a battery module, which includes: a plurality of single cells, a plurality of single cells are stacked; and the sampling circuit board for a battery module of any one of the above, wherein the sampling circuit board The sampling terminal is electrically connected with the single battery.
  • the battery module further includes a bus bar, which electrically connects two or more single cells
  • the sampling terminal includes a first area and a second area connected to each other, and the first area is connected through The component is connected to the electrical connection area of the main board, and the second area extends away from the main board and is connected to the bus bar.
  • the sampling terminal is connected to the electrical connection area of the main board through the connector, wherein the hook component included in the connection piece stacks the sampling terminal and the electrical connection area of the main board, To achieve a stable connection between the two.
  • the sampling circuit board of the embodiment of the present application replaces brazing and traditional tension riveting with connecting parts with hook-shaped components.
  • the connecting process is simple and can avoid the circuit board or riveting parts that are easy to tear in the traditional tension riveting process. problem.
  • the sampling terminal forms an abutting portion between two or more first openings, and the pressing portion of the connector abuts against the abutting portion, so as to laminate the sampling terminal and the electrical connection area of the main board.
  • the number of hook components is two or more, and they are arranged along the first direction, and the abutting portion extends along the first direction, which avoids the problem of relative rotation after the sampling terminal is connected to the electrical connection area of the main board and improves the stability of the connection.
  • Fig. 1 shows a perspective view of a battery module according to an embodiment of the present application
  • Fig. 2 shows a perspective view of a sampling circuit board for a battery module according to an embodiment of the present application
  • Fig. 3 shows a three-dimensional exploded view of a sampling circuit board for a battery module according to an embodiment of the present application
  • FIG. 4 shows a partial enlarged view of area Q in FIG. 3;
  • Fig. 5 shows a perspective view of a connector in a sampling circuit board for a battery module according to an embodiment of the present application.
  • 110-main board 110a-first surface; 110b-second surface;
  • 131-main body 131a-first boundary; 131b-second boundary;
  • the embodiments of the present application provide a sampling circuit board for a battery module and a battery module, wherein the sampling circuit board is arranged in the battery module and is used for sampling information such as voltage signals and temperature signals to facilitate battery management.
  • Fig. 1 shows a perspective view of a battery module according to an embodiment of the present application.
  • the battery module includes a plurality of single cells 200 and a sampling circuit board 100 for the battery module.
  • a plurality of single cells 200 are stacked and arranged. In the three-dimensional view shown in FIG. 1, the plurality of single cells 200 are located in the enclosure.
  • Each single cell 200 includes an electrode terminal 210, wherein the sampling circuit board 100 and the electrode terminal 210 are electrically connected to each other. Connect to collect the parameters of the single battery 200.
  • the single battery 200 may be a can-type secondary battery or a pouch-type secondary battery. In this embodiment, a can-type secondary battery is taken as an example for description.
  • Figures 2 and 3 respectively show a perspective view and a perspective exploded view of a sampling circuit board for a battery module according to an embodiment of the present application.
  • Figures 2 and 3 respectively show two opposite surfaces of the sampling circuit board for a battery module The specific structure.
  • the sampling circuit board 100 for a battery module in this embodiment includes a main board 110 and a plurality of sampling terminals 120.
  • the main board 110 may be a flexible printed circuit (FPC), and in some other embodiments, it may also be a non-flexible printed circuit board (PCB).
  • the sampling terminal 120 may be a metal sheet, and in some other embodiments, it may also be a sheet-shaped conductor made of other conductive materials.
  • the main board 110 includes a plurality of electrical connection areas 111.
  • the electrical connection area 111 may be a conductive area exposed on the surface of the main board 110.
  • the electrical connection area 111 is an exposed part of the copper foil on the FPC.
  • the plurality of sampling terminals 120 are electrically connected to the plurality of electrical connection areas 111, one end of the sampling terminal 120 extends away from the main board 110, and each sampling terminal 120 is connected to the electrical connection area 111 of the main board 110 through a connector 130.
  • the sampling terminal 120 of the sampling circuit board 100 is electrically connected to the single battery 200. Specifically, the sampling terminal 120 is directly or indirectly electrically connected to the electrode terminal 210 of the single battery 200. Connected, the sampling circuit board 100 collects the parameters of the multiple single cells 200 through the sampling terminal 120.
  • the battery module further includes a bus bar 300, wherein the bus bar 300 is electrically connected to more than two single cells 200, specifically, the bus bar 300 is electrically connected to the electrode terminals 210 of more than two single cells 200.
  • the sampling terminal 120 may include a first area and a second area connected to each other. The first area is connected to the electrical connection area 111 of the main board 110 through the connector 130, and the second area extends away from the main board 110 and is connected to the bus bar 300.
  • sampling terminal 120 of the circuit board 100 is not limited to be connected to the single battery 200 through the bus bar 300. In some embodiments, the sampling terminal 120 may also be directly connected to the single battery 200.
  • Fig. 4 shows a partial enlarged view of the Q area in Fig. 3
  • Fig. 5 shows a perspective view of a connector in a sampling circuit board for a battery module according to an embodiment of the present application.
  • the connector 130 includes a main body 131 and at least one hook component C10.
  • the at least one hook component C10 is disposed on the main body 131.
  • Each hook component C10 electrically connects the sampling terminal 120 and the main board 110.
  • the area 111 is laminated and attached.
  • the sampling terminal 120 is connected to the electrical connection area 111 of the main board 110 through the connector 130.
  • the hook component C10 included in the connector 130 connects the sampling terminal 120 and the main board 110
  • the electrical connection area 111 is laminated and attached to achieve a stable connection between the two.
  • the connection process between the main board and the sampling terminal adopts soldering, riveting, glue dispensing and other processes.
  • the traditional riveting process realizes the riveting between the main board and the sampling terminal through tensioning force, and it is easy to produce a circuit board or riveting after riveting.
  • the sampling circuit board 100 of the embodiment of the present application replaces brazing and traditional tensioning and riveting connection processes with a connecting piece 130 having a hook-shaped component C10.
  • the connection process is simple, and the connection structure using tension is replaced by lamination and pressing. It can avoid the problem of easy tearing of the circuit board or riveting parts in the traditional tension riveting process.
  • each hook component C10 includes two hook structures C11.
  • the hook structure C11 includes a bent portion 132 and a pressing portion 133.
  • the bent portion 132 connects the pressing portion 133 and the main body 131 so that the pressing A separation space is formed between the portion 133 and the main body portion 131, and the separation space accommodates a portion of the sampling terminal 120 and a portion of the electrical connection area 111 of the main board 110.
  • the main body portion 131 may include a first boundary 131a and a second boundary 131b that are opposed to each other. Both the first boundary 131a and the second boundary 131b extend along the first direction A.
  • the two curved portions 132 of each hook component C10 are respectively connected to the first A boundary 131a and a second boundary 131b.
  • the main body 131 of the connector 130 of this embodiment is rectangular, the first boundary 131a and the second boundary 131b respectively correspond to a pair of long sides of the rectangle, and the two hook-shaped structures C11 included in each hook-shaped component C10 can be symmetrically arranged ,
  • the bent portions 132 of the two hook-shaped structures C11 are bent toward each other, so that a part of the sampling terminal 120 and a part of the electrical connection area 111 that are laminated and bonded are limited to be located between the bent portions 132 of the two hook-shaped structures C11, so that the two are connected More stable.
  • the shape of the main body 131 can be adjusted according to actual design requirements, and the two hook structures C11 included in each hook component C10 can also be arranged asymmetrically.
  • the sampling terminal 120 of this embodiment is provided with two or more first openings 121 spaced apart, and the sampling terminal 120 forms an abutting portion 122 between the two or more first openings 121.
  • the electrical connection area 111 is located between the sampling terminal 120 and the main body 131, and the bent portion 132 of the hook component C10 passes through the first opening 121, the pressing portion 133 abuts against the abutting portion 122 of the sampling terminal 120, so as to laminate the sampling terminal 120 and the electrical connection area 111 of the main board 110 to the main body 131.
  • the number of hook components C10 of each connector 130 is more than two, and they are arranged along the first direction A.
  • the abutting portion 122 also extends along the first direction A.
  • each sampling terminal 120 is provided with two first openings 121, and in the corresponding connecting member 130, the bent portions 132 of two or more hook-shaped structures C1 connected to the first boundary 131a pass through them.
  • the freedom of mutual movement among the electrical connection area 111 of the main board 110, the sampling terminal 120, and the connector 130 is restricted to the first direction A, so as to prevent the sampling terminal 120 from facing each other after the electrical connection area 111 of the main board 110 is connected.
  • the problem of rotation improves the stability of the connection.
  • the electrical connection area 111 of the main board 110 in the present embodiment is provided with two or more second openings 111a spaced apart, and the bent portion 132 of the hook component C10 passes through the second opening 111a.
  • the shape of the second opening 111a matches the cross-sectional shape of the curved portion 132 on the surface parallel to the electrical connection area 111, so that the curved portion 132 of each hook component C10 can pass through the electrical connection area 111 of the main board 110 to facilitate
  • the bent portion 132 of each hook-shaped component C10 is restricted by the second opening 111a with matching shape to prevent unnecessary activities, so that the electrical connection area 111, sampling terminal 120, and connector of the main board 110 A reliable connection structure is obtained between 130.
  • the main board 110 includes a first surface 110 a and a second surface 110 b opposite to each other, wherein a plurality of electrical connection areas 111 are provided on the first surface 110 a of the main board 110.
  • the main body 131 of the connector 130 is located on one side of the second surface 110b of the main board 110, and the hook component C10 passes through the electrical connection area 111 of the main board 110, the sampling terminal 120, and connects the sampling terminal 120 to the second surface 110b of the main board 110.
  • the electrical connection area 111 of the main board 110 is pressed against the main body 131.
  • the sampling circuit board 100 may further include a connecting terminal 140 disposed on the second surface 110b of the main board 110.
  • the first surface 110a of the main board 110 faces the plurality of single cells 200, thereby facilitating the electrical connection between the sampling terminal 120 and the single cells 200 ;
  • the second surface 110b of the main board 110 faces away from the plurality of single cells 200, which avoids the problem of the large-sized connecting terminal 140 interfering between the main board 110 and the plurality of single cells 200.
  • the hook component C10 of the connector 130 passes through the electrical connection area 111 of the main board 110 and the sampling terminal 120 so as to press the two against the main body portion 131 of the connector 130 to be laminated. ⁇ Joined.
  • the sampling terminal 120 may have a first opening 121 for the hook component C10 to pass through
  • the electrical connection area 111 of the main board 110 may have a second opening 111a for the hook component C10 to pass through.
  • the hook component C10 of the connector 130 may not pass through the electrical connection area 111 and/or the sampling terminal 120 of the main board 110, but pass through the electrical connection area 111 and/or the sampling terminal 120 of the main board 110.
  • the electrical connection area 111 and/or the sampling terminal 120 of the main board 110 may not be provided with an opening for the hook component C10 to pass through, and only need to have an edge area corresponding to the hook component C10.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种用于电池模块的采样电路板（100）及电池模块，用于电池模块的采样电路板（100）包括：主板（110），包括多个电连接区（111）；以及多个采样端子（120），分别与多个电连接区（111）电连接，采样端子（120）的一端向远离主板（110）的方向延伸，每个采样端子（120）通过连接件（130）与主板（110）的电连接区（111）连接，其中，连接件（130）包括主体部（131）以及至少一个钩状组件（C10），至少一个钩状组件（C10）设置在主体部（131）上，每个钩状组件（C10）将采样端子（120）和主板（110）的电连接区（111）层叠贴合。根据该采样电路板（100），连接件（130）包括的钩状组件（C10）将采样端子（120）和主板（110）的电连接区（111）层叠贴合，实现两者的稳定连接。该采样电路板（100）通过具有钩状组件（C10）的连接件（130）代替钎焊以及传统张紧铆接等连接工艺，连接工艺简单，且能够避免传统张紧铆接工艺中容易撕裂电路板或铆接件的问题。

Description

用于电池模块的采样电路板及电池模块
相关申请的交叉引用
本申请要求2019年1月30日提交的、申请号为201920171310.8、发明名称为“采样电路板及电池模组”的中国专利申请的优先权，其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，具体涉及一种用于电池模块的采样电路板及电池模块。
背景技术
电池内部的电压采样和热管理系统是电池管理系统的核心单元，传统的电池模块低电压和温度采样是通过线束隔离板进行采集的。但是，由于线束隔离板制作工序繁琐，不易于自动化生产、效率低、成本高，已不能满足市场的竞争需求。
相关技术中，可以采用柔性电路板作为采样电路板，用来替代传统的线束隔离板，采样电路板包括主板和自主板向外伸出的多个采样端子。
目前，采样电路板中主板与采样端子的连接工艺采用钎焊、铆接、点胶等工艺，钎焊工艺比较复杂，且连接处体积大，不利于模组采样结构设计，铆接结合点胶工艺的工艺步骤复杂，且点胶工艺有可能出现两个电连接表面之间渗透结构胶，使采样连接接触电阻变大。
因此，期望一种主板与采样端子的连接稳定性更高的用于电池模块的采样电路板及电池模块。
申请内容
本申请提供一种用于电池模块的采样电路板及电池模块，提高采样电 路板中主板与采样端子的连接稳定性。
一方面，本申请实施例提供一种用于电池模块的采样电路板，其包括：主板，包括多个电连接区；以及多个采样端子，分别与多个电连接区电连接，采样端子的一端向远离主板的方向延伸，每个采样端子通过连接件与主板的电连接区连接，其中，连接件包括主体部以及至少一个钩状组件，至少一个钩状组件设置在主体部上，每个钩状组件将采样端子和主板的电连接区层叠贴合。
根据本申请一方面的前述任一实施方式，每个钩状组件包括两个钩状结构，钩状结构包括弯曲部和压合部，弯曲部连接压合部与主体部，使得压合部与主体部之间形成间隔空间，间隔空间容纳部分采样端子以及部分主板的电连接区。
根据本申请一方面的前述任一实施方式，主体部包括相对的第一边界和第二边界，第一边界和第二边界均沿第一方向延伸，每个钩状组件的两个弯曲部分别连接于第一边界、第二边界。
根据本申请一方面的前述任一实施方式，采样端子开设有间隔设置的两个以上第一开口，采样端子在两个以上第一开口之间形成抵接部，电连接区位于采样端子与主体部之间，弯曲部穿过第一开口，压合部与抵接部抵接，以将采样端子以及主板的电连接区层叠贴合于主体部。
根据本申请一方面的前述任一实施方式，钩状组件的数量为两个以上，并且沿第一方向排列，抵接部沿第一方向延伸。
根据本申请一方面的前述任一实施方式，主板的电连接区开设有间隔设置的两个以上第二开口，弯曲部穿过第二开口，其中，第二开口的形状与弯曲部在平行于电连接区表面上的截面形状匹配。
根据本申请一方面的前述任一实施方式，主板包括相对的第一表面和第二表面，多个电连接区设置于主板的第一表面，连接件的主体部位于主板的第二表面的一侧，钩状组件自主板的第二表面穿过主板的电连接区、采样端子，并将采样端子、主板的电连接区压向主体部。
根据本申请一方面的前述任一实施方式，采样电路板还包括：连接端子，设置于主板的第二表面。
另一方面，本申请提供一种电池模块，其包括：多个单体电池，多个单体电池堆叠设置；以及上述任一项的用于电池模块的采样电路板，其中，采样电路板的采样端子与单体电池电连接。
根据本申请另一方面的前述任一实施方式，电池模块还包括汇流排，汇流排电连接两个以上单体电池，采样端子包括相互连接的第一区和第二区，第一区通过连接件与主板的电连接区连接，第二区向远离主板的方向延伸并与汇流排连接。
根据本申请实施例的用于电池模块的采样电路板，采样端子通过连接件与主板的电连接区连接，其中，连接件包括的钩状组件将采样端子和主板的电连接区层叠贴合，实现两者的稳定连接。本申请实施例的采样电路板通过具有钩状组件的连接件代替钎焊以及传统张紧铆接等连接工艺，连接工艺简单，且能够避免传统张紧铆接工艺中容易撕裂电路板或铆接件的问题。
在一些可选的实施例中，采样端子在两个以上第一开口之间形成抵接部，连接件的压合部与抵接部抵接，以将采样端子以及主板的电连接区层叠贴合于主体部。钩状组件的数量为两个以上，并且沿第一方向排列，抵接部沿第一方向延伸，避免采样端子与主板的电连接区连接后发生相对转动的问题，提高连接的稳定性。
附图说明
通过阅读以下参照附图对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显，其中，相同或相似的附图标记表示相同或相似的特征。
图1示出根据本申请实施例的电池模块的立体图；
图2示出根据本申请实施例的用于电池模块的采样电路板的立体图；
图3示出根据本申请实施例的用于电池模块的采样电路板的立体分解图；
图4示出图3中Q区域的局部放大图；
图5示出根据本申请实施例的用于电池模块的采样电路板中连接件的 立体图。
图中：
100-采样电路板；
110-主板；110a-第一表面；110b-第二表面；
111-电连接区；111a-第二开口；
120-采样端子；121-第一开口；
130-连接件；
131-主体部；131a-第一边界；131b-第二边界；
C10-钩状组件；C11-钩状结构；132-弯曲部；133-压合部；
140-连接端子；
200-单体电池；
210-电极端子；
300-汇流排；
A-第一方向。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施例，对本申请进行进一步详细描述。应理解，此处所描述的具体实施例仅被配置为解释本申请，并不被配置为限定本申请。对于本领域技术人员来说，本申请可以在不需要这些具体细节中的一些细节的情况下实施。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还 存在另外的相同要素。
应当理解，在描述部件的结构时，当将一层、一个区域称为位于另一层、另一个区域“上面”或“上方”时，可以指直接位于另一层、另一个区域上面，或者在其与另一层、另一个区域之间还包含其它的层或区域。并且，如果将部件翻转，该一层、一个区域将位于另一层、另一个区域“下面”或“下方”。
本申请实施例提供一种用于电池模块的采样电路板以及一种电池模块，其中采样电路板设置于电池模块内，用于电压信号、温度信号等信息的采样，以方便进行电池管理。
图1示出根据本申请实施例的电池模块的立体图，该电池模块包括多个单体电池200以及用于电池模块的采样电路板100。多个单体电池200堆叠设置，在图1所示的立体图中，多个单体电池200位于围框内，每个单体电池200包括电极端子210，其中采样电路板100与电极端子210电连接以采集单体电池200的参数。其中，单体电池200可以是罐型二次电池，也可以是袋型二次电池，在本实施例中，以罐型二次电池为例进行说明。
图2、图3分别示出根据本申请实施例的用于电池模块的采样电路板的立体图、立体分解图，其中图2和图3分别示出用于电池模块的采样电路板相对两个表面的具体结构。本实施例的用于电池模块的采样电路板100包括主板110以及多个采样端子120。
主板110可以是柔性电路板(Flexible Printed Circuit，FPC)，在其它一些实施例中，也可以是非柔性的印刷电路板(Printed Circuit Board，PCB)。采样端子120可以是金属片，在其它一些实施例中，也可以是其它导电材料制成的片状导体。
主板110包括多个电连接区111，在一些实施例中，电连接区111可以是暴露在主板110表面的导电区，本实施例中电连接区111为FPC上的铜箔裸露部分。多个采样端子120分别与多个电连接区111电连接，采样端子120的一端向远离主板110的方向延伸，每个采样端子120通过连接件130与主板110的电连接区111连接。
请继续参考图1，根据本申请实施例的电池模块，采样电路板100的 采样端子120与单体电池200电连接，具体地，采样端子120直接或间接与单体电池200的电极端子210电连接，采样电路板100通过采样端子120采集多个单体电池200的参数。
在一些实施例中，电池模块还包括汇流排300，其中汇流排300电连接两个以上单体电池200，具体地，汇流排300与两个以上单体电池200的电极端子210电连接。采样端子120可以包括相互连接的第一区和第二区，第一区通过连接件130与主板110的电连接区111连接，第二区向远离主板110的方向延伸并与汇流排300连接。
可以理解的是，电路板100的采样端子120不限于通过汇流排300与单体电池200连接，在一些实施例中，采样端子120也可以直接与单体电池200连接。
图4示出图3中Q区域的局部放大图，图5示出根据本申请实施例的用于电池模块的采样电路板中连接件的立体图。在本实施例中，连接件130包括主体部131以及至少一个钩状组件C10，至少一个钩状组件C10设置在主体部131上，每个钩状组件C10将采样端子120和主板110的电连接区111层叠贴合。
根据本申请实施例的采样电路板100以及电池模块，采样端子120通过连接件130与主板110的电连接区111连接，其中，连接件130包括的钩状组件C10将采样端子120和主板110的电连接区111层叠贴合，实现两者的稳定连接。
传统的采样电路板中，主板与采样端子的连接工艺采用钎焊、铆接、点胶等工艺，其中传统的铆接工艺通过张紧力实现主板与采样端子的铆接，铆接后容易产生电路板或铆接件撕裂的问题。本申请实施例的采样电路板100通过具有钩状组件C10的连接件130代替钎焊以及传统张紧铆接等连接工艺，连接工艺简单，且通过层叠贴合压紧代替利用张紧力的连接结构，能够避免传统张紧铆接工艺中容易撕裂电路板或铆接件的问题。
在本实施例中，每个钩状组件C10包括两个钩状结构C11，钩状结构C11包括弯曲部132和压合部133，弯曲部132连接压合部133与主体部131，使得压合部133与主体部131之间形成间隔空间，该间隔空间容纳部 分采样端子120以及部分主板110的电连接区111。
主体部131可以包括相对的第一边界131a和第二边界131b，第一边界131a和第二边界131b均沿第一方向A延伸，每个钩状组件C10的两个弯曲部132分别连接于第一边界131a、第二边界131b。
本实施例的连接件130的主体部131为矩形状，第一边界131a、第二边界131b分别对应矩形的一对长边，每个钩状组件C10包括的两个钩状结构C11可以对称设置，两个钩状结构C11的弯曲部132相向弯折，使得层叠贴合的部分采样端子120和部分电连接区111限位于两个钩状结构C11的弯曲部132之间，使得两者的连接更加稳固。
可以理解的是，在其它一些实施例中，主体部131的形状可以根据实际设计需要调整，每个钩状组件C10包括的两个钩状结构C11也可以非对称设置。
如图3和图4，本实施例的采样端子120开设有间隔设置的两个以上第一开口121，采样端子120在两个以上第一开口121之间形成抵接部122。在连接件130将采样端子120与主板110的电连接区111连接的连接结构中，电连接区111位于采样端子120与主体部131之间，钩状组件C10的弯曲部132穿过第一开口121，压合部133与采样端子120的抵接部122抵接，以将采样端子120以及主板110的电连接区111层叠贴合于主体部131。
在一些实施例中，每个连接件130的钩状组件C10的数量为两个以上，并且沿第一方向A排列，在采样端子120上，抵接部122也沿第一方向A延伸。
具体地，本实施例中，每个采样端子120开设有两个第一开口121，对应连接件130中，连接于第一边界131a的两个以上钩状结构C1的弯曲部132均穿过其中一个第一开口121，连接于第二边界131b的两个以上钩状结构C1的弯曲部132均穿过另一个第一开口121。两个第一开口121之间形成沿第一方向A延伸的条状抵接部122，对应连接件130的多个钩状结构C1的压合部133均与该条状抵接部122抵接。根据上述结构，主板110的电连接区111、采样端子120、连接件130之间相互运动的自由度限制在第一方向A上，避免采样端子120与主板110的电连接区111连接后 发生相对转动的问题，提高连接的稳定性。
如图3和图4，本实施例中主板110的电连接区111开设有间隔设置的两个以上第二开口111a，钩状组件C10的弯曲部132穿过第二开口111a。其中，第二开口111a的形状与弯曲部132在平行于电连接区111表面上的截面形状匹配，使得每个钩状组件C10的弯曲部132能够穿过主板110的电连接区111以方便将其连接，同时又通过形状匹配的第二开口111a将每个钩状组件C10的弯曲部132进行限位，防止其产生多余活动，从而在主板110的电连接区111、采样端子120、连接件130之间得到可靠的连接结构。
请参考图1至图3，主板110包括相对的第一表面110a和第二表面110b，其中，多个电连接区111设置于主板110的第一表面110a。连接件130的主体部131位于主板110的第二表面110b的一侧，钩状组件C10自主板110的第二表面110b穿过主板110的电连接区111、采样端子120，并将采样端子120、主板110的电连接区111压向主体部131。此外采样电路板100还可以包括连接端子140，设置于主板110的第二表面110b。
根据上述本实施例的采样电路板100，采样电路板100设置于电池模块中时，主板110的第一表面110a朝向多个单体电池200，从而方便采样端子120与单体电池200的电连接；主板110的第二表面110b背向多个单体电池200，避免了尺寸较大的连接端子140在主板110与多个单体电池200之间干涉的问题。
需要说明的是，在上述本申请实施例中，连接件130的钩状组件C10穿过主板110的电连接区111、采样端子120从而将两者压向连接件130的主体部131以层叠贴合连接。相应地，采样端子120可以开设供钩状组件C10穿过的第一开口121，主板110的电连接区111可以开设供钩状组件C10穿过的第二开口111a。然而在其它一些实施例中，连接件130的钩状组件C10可以不穿过主板110的电连接区111和/或采样端子120，而是通过主板110的电连接区111和/或采样端子120的边缘区域绕过，相应地，主板110的电连接区111和/或采样端子120可以不设置供钩状组件C10穿过的开口，仅需要具有与钩状组件C10对应的边缘区域。
依照本申请如上文所述的实施例，这些实施例并没有详尽叙述所有的细节，也不限制该申请仅为所述的具体实施例。显然，根据以上描述，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本申请的原理和实际应用，从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请仅受权利要求书及其全部范围和等效物的限制。

Claims (10)

  1. 一种用于电池模块的采样电路板(100)，包括：
    主板(110)，包括多个电连接区(111)；以及
    多个采样端子(120)，分别与多个所述电连接区(111)电连接，所述采样端子(120)的一端向远离所述主板(110)的方向延伸，每个所述采样端子(120)通过连接件(130)与所述主板(110)的电连接区(111)连接，
    其中，所述连接件(130)包括主体部(131)以及至少一个钩状组件(C10)，至少一个所述钩状组件(C10)设置在主体部(131)上，每个所述钩状组件(C10)将所述采样端子(120)和所述主板(110)的电连接区(111)层叠贴合。
  2. 根据权利要求1所述的采样电路板(100)，其中，每个所述钩状组件(C10)包括两个钩状结构(C11)，所述钩状结构(C11)包括弯曲部(132)和压合部(133)，所述弯曲部(132)连接所述压合部(133)与所述主体部(131)，使得所述压合部(133)与所述主体部(131)之间形成间隔空间，所述间隔空间容纳部分所述采样端子(120)以及部分所述主板(110)的电连接区(111)。
  3. 根据权利要求2所述的采样电路板(100)，其中，所述主体部(131)包括相对的第一边界(131a)和第二边界(131b)，所述第一边界(131a)和所述第二边界(131b)均沿第一方向(A)延伸，每个所述钩状组件(C10)的两个所述弯曲部(132)分别连接于所述第一边界(131a)、所述第二边界(131b)。
  4. 根据权利要求3所述的采样电路板(100)，其中，所述采样端子(120)开设有间隔设置的两个以上第一开口(121)，所述采样端子(120)在两个以上所述第一开口(121)之间形成抵接部(122)，
    所述电连接区(111)位于所述采样端子(120)与所述主体部(131)之间，所述弯曲部(132)穿过所述第一开口(121)，所述压合部(133)与所述抵接部(122)抵接，以将所述采样端子(120)以及所述主板 (110)的电连接区(111)层叠贴合于所述主体部(131)。
  5. 根据权利要求4所述的采样电路板(100)，其中，所述钩状组件(C10)的数量为两个以上，并且沿所述第一方向(A)排列，所述抵接部(122)沿所述第一方向(A)延伸。
  6. 根据权利要求2所述的采样电路板(100)，其中，所述主板(110)的电连接区(111)开设有间隔设置的两个以上第二开口(111a)，所述弯曲部(132)穿过所述第二开口(111a)，
    其中，所述第二开口(111a)的形状与所述弯曲部(132)在平行于所述电连接区(111)表面上的截面形状匹配。
  7. 根据权利要求1所述的采样电路板(100)，其中，所述主板(110)包括相对的第一表面(110a)和第二表面(110b)，多个所述电连接区(111)设置于所述主板(110)的第一表面(110a)，
    所述连接件(130)的主体部(131)位于所述主板(110)的第二表面(110b)的一侧，所述钩状组件(C10)自所述主板(110)的第二表面(110b)穿过所述主板(110)的电连接区(111)、所述采样端子(120)，并将所述采样端子(120)、所述主板(110)的电连接区(111)压向所述主体部(131)。
  8. 根据权利要求7所述的采样电路板(100)，还包括：
    连接端子(140)，设置于所述主板(110)的第二表面(110b)。
  9. 一种电池模块，包括：
    多个单体电池(200)，多个所述单体电池(200)堆叠设置；以及
    根据权利要求1至8任一项所述的用于电池模块的采样电路板(100)，
    其中，所述采样电路板(100)的采样端子(120)与所述单体电池(200)电连接。
  10. 根据权利要求9所述的电池模块，还包括汇流排(300)，所述汇流排(300)电连接两个以上所述单体电池(200)，所述采样端子(120)包括相互连接的第一区和第二区，所述第一区通过所述连接件(130)与所述主板(110)的电连接区(111)连接，所述第二区向远离所述主板(110)的方向延伸并与所述汇流排(300)连接。
PCT/CN2019/129290 2019-01-30 2019-12-27 用于电池模块的采样电路板及电池模块 WO2020155988A1 (zh)

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