WO2023174285A1 - Fpc采集装置、动力电池和车辆 - Google Patents

Fpc采集装置、动力电池和车辆 Download PDF

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Publication number
WO2023174285A1
WO2023174285A1 PCT/CN2023/081374 CN2023081374W WO2023174285A1 WO 2023174285 A1 WO2023174285 A1 WO 2023174285A1 CN 2023081374 W CN2023081374 W CN 2023081374W WO 2023174285 A1 WO2023174285 A1 WO 2023174285A1
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WIPO (PCT)
Prior art keywords
fpc
board
collection
voltage detection
voltage
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/081374
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English (en)
French (fr)
Inventor
潘福中
王鹏
郑松太
李慧明
王旭东
牛亚琪
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Viridi eMobility Technology Ningbo Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Zeekr Intelligent Technology Co Ltd
Viridi eMobility Technology Ningbo Co Ltd
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Publication of WO2023174285A1 publication Critical patent/WO2023174285A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • 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 technical field of power batteries, and in particular to an FPC (Flexible Printed Circuit, flexible circuit board) collection device, power battery and vehicle.
  • FPC Flexible Printed Circuit, flexible circuit board
  • the voltage and temperature of the battery cells of power batteries are usually collected through a wiring harness connected to the BMS (Battery Management System).
  • BMS Battery Management System
  • This electronic and electrical structure for collecting the operating parameters of the battery cells is relatively complex, resulting in the assembly of the power battery. The problem of low efficiency. Accordingly, there is an urgent need to provide a new collection structure to solve this problem.
  • the main purpose of this application is to provide an FPC collection device, aiming to simplify the electronic and electrical structure of the power battery, thereby improving its assembly efficiency.
  • the FPC collection device includes:
  • An FPC collection board is used to install on the surface of the cell of the power battery, with circuits etched inside the FPC collection board;
  • a collection chip is provided on the FPC collection board and is electrically connected to the circuit
  • a voltage detection part and/or a temperature detection part are provided on the FPC acquisition board and electrically connected to the circuit.
  • the voltage detection part is used to obtain the voltage of the battery core
  • the temperature detection part is used to obtain the voltage of the battery core. Describe the temperature of the battery core.
  • the voltage detection component is configured as a nickel sheet, one end of the nickel sheet is welded to the FPC collection board, and the other end is connected to the pole of the battery core.
  • the temperature detection component is configured as an NTC thermistor, and the temperature detection component is used to detect the temperature of the nickel sheet.
  • the temperature detection component is connected to the nickel sheet through a thermal conductive structure.
  • the collection chip, the voltage detection component and the temperature detection component are all provided on the upper surface of the FPC collection board.
  • the FPC collection device also includes a reinforcing structure. The reinforcing structure It is arranged corresponding to the collection chip, the voltage detection component and the temperature detection component, and is located on the lower surface of the FPC collection board.
  • the plurality of voltage detection parts are spaced apart along the length direction of the FPC acquisition board, and the reinforcing structure is configured as a reinforcing plate.
  • the strong board is stacked on the lower surface of the FPC acquisition board and is arranged corresponding to all the voltage detection parts.
  • the reinforcing structure includes a plurality of reinforcing plates, and a plurality of the voltage detection parts are spaced apart along the length direction of the FPC acquisition board.
  • the reinforcing plates are distributed at intervals along the length direction of the FPC acquisition board, and one reinforcing plate is provided corresponding to at least one of the voltage detection components.
  • the FPC collection device further includes a voltage equalization module provided on the FPC collection board, and the voltage equalization module is electrically connected to the line.
  • the FPC acquisition device further includes a filter module provided on the FPC acquisition board, and the filter module is electrically connected to the line.
  • This application also proposes a power battery, which includes a battery core and the aforementioned FPC collection device.
  • the FPC collection board of the FPC collection device is provided on the surface of the battery core.
  • This application also proposes a vehicle, including the aforementioned power battery.
  • the relevant electronic and electrical structures used to collect cell operating parameters in the power battery can be simplified, and the power supply can be facilitated.
  • Battery assembly thereby improving the production efficiency of power batteries and reducing production costs.
  • the transfer cost can be saved, thereby reducing the production cost of the power battery.
  • the FPC collection board since the FPC collection board has flexibility and elastic deformation ability, when the battery core expands, the FPC collection board located on the surface of the battery core can well absorb the deformation of the battery core.
  • Figure 1 is a schematic structural diagram of an embodiment of the FPC collection device of the present application.
  • FIG. 1 is another structural schematic diagram of the FPC acquisition device in Figure 1.
  • the voltage and temperature of the battery cells of power batteries are usually collected through a wiring harness connected to the BMS (Battery Management System).
  • BMS Battery Management System
  • This electronic and electrical structure for collecting the operating parameters of the battery cells is relatively complex, resulting in the assembly of the power battery. Problems of low efficiency and high manufacturing costs. Accordingly, there is an urgent need to provide a new collection structure to solve this problem.
  • the FPC collection device for power batteries.
  • the FPC collection device includes:
  • the FPC collection board 10 is used to be installed on the cell surface of the power battery. Both ends of the FPC collection board 10 are provided with outlet structures 11. The interior of the FPC collection board 10 is etched with lines electrically connected to the outlet structures 11;
  • the acquisition chip 20 is located on the FPC acquisition board 10 and is electrically connected to the circuit;
  • the voltage detection component 30 and/or the temperature detection component are provided on the FPC acquisition board 10 and are electrically connected to the circuit.
  • the voltage detection component 30 is used to obtain the voltage of the battery core
  • the temperature detection component is used to obtain the voltage of the battery core. Cell temperature.
  • the relevant electronic and electrical structure in the power battery for collecting cell operating parameters can be simplified. It also facilitates the assembly of power batteries, thereby improving the production efficiency of power batteries and reducing production costs. Secondly, compared with the structural solution using wire harness transfer in the existing technology, the transfer cost can be saved, thereby reducing the production cost of the power battery.
  • the FPC collection plate 10 since the FPC collection plate 10 has flexibility and elastic deformation ability, when the battery core expands, the FPC collection plate 10 provided on the surface of the battery core can well absorb the deformation of the battery core.
  • the acquisition chip 20 controls the voltage detection component 30 and the temperature detection component to collect the voltage and temperature parameters of the battery core in real time or periodically according to the design requirements, and communicates with external electronic components through the outlet structure 11 to communicate with the external electronic components.
  • the acquisition chip 20 can be an MCU (Micro Control Unit, micro control unit), MPU (Micro Processor Unit, microprocessor) or SOC (System on Chip, system-level chip, also called a system on a chip) )wait.
  • MCU Micro Control Unit, micro control unit
  • MPU Micro Processor Unit, microprocessor
  • SOC System on Chip, system-level chip, also called a system on a chip
  • the outlet structure 11 is configured as a connector welded on the FPC acquisition board 10.
  • the outlet structures 11 are provided at both ends of the FPC acquisition board 10, which can facilitate the connection of electronic components from the two connections. Choose one of the devices for communication connection, which will help improve the versatility of the FPC acquisition device. Of course, both connectors can also be connected for communication.
  • the voltage detection component 30 is configured as a nickel sheet. One end of the nickel sheet is welded to the FPC collection board 10 and the other end is connected to the pole of the battery core. In this way, by welding the nickel sheet to the FPC collection board 10, the installation reliability of the nickel sheet can be improved, thereby ensuring the stability of its voltage collection work.
  • the voltage detection component can also be configured as a copper sheet. Those skilled in the art can understand that the specific structure of the voltage detection component can be set according to actual requirements, as long as the voltage of the battery cell can be obtained. .
  • the temperature detection component is configured as an NTC (Negative Temperature Coefficient, negative temperature coefficient) thermistor, and the temperature detection component is used to detect the temperature of the nickel sheet.
  • NTC Negative Temperature Coefficient, negative temperature coefficient
  • the temperature detection component can also be configured as a PTC (Positive Temperature Coefficient) thermistor, or a thermocouple, etc.; the temperature detection component can also be a pole directly connected to the battery core and directly detect the battery core. temperature.
  • the temperature detection component is connected to the nickel sheet through a thermal conductive structure.
  • the thermally conductive structure can be thermally conductive glue, thermally conductive silicone grease, or graphene sheets.
  • one end of the temperature detection component can also be overlapped on the nickel sheet.
  • the FPC acquisition device also includes a voltage equalization module 50 and a filter module 60 provided on the FPC acquisition board 10.
  • the voltage equalization module 50 and the filter module 60 are both electrically connected to the lines.
  • the voltage balancing module 50 usually includes a resistive element and is used to increase the charging voltage of the battery pack and charge the battery in a balanced manner to balance the characteristics of each battery cell in the battery pack and extend the service life of the battery;
  • the filter module 60 It usually includes capacitors, inductors and magnetic bead components, and is used to reduce the AC component of the pulsating DC voltage and retain its DC component, so that the output voltage ripple coefficient is reduced and the waveform becomes smoother.
  • the specific structures of the voltage balancing module 50 and the filtering module 60 can be set according to actual requirements, as long as they are structures that can realize their corresponding functions. In this way, further integrating other functional modules and their electronic components on the FPC acquisition board 10 can further simplify the structure of the power battery, thereby improving the production efficiency of the power battery.
  • the acquisition chip 20, the voltage detection component 30, the temperature detection component, the voltage equalization module 50 and the filter module 60 are all located on the upper surface of the FPC acquisition board 10.
  • the FPC acquisition device also includes a reinforcing structure 70.
  • the reinforcing structure 70 is provided corresponding to the acquisition chip 20 , the voltage detection component 30 , the temperature detection component, the voltage equalization module 50 and the filter module 60 , and is located on the lower surface of the FPC acquisition board 10 .
  • electronic components such as the collection chip 20, nickel sheets, thermistors, resistors, capacitors, inductors, and magnetic beads are all fixed on the upper surface of the FPC collection board 10 through welding.
  • the flexibility of the FPC collection board 10 itself is not conducive to the welding and fixation of the electronic components and the FPC collection board 10, that is, welding quality problems such as false welding are prone to occur.
  • By attaching the reinforcing structure 70 to the lower surface of the FPC it can provide effective support when welding electronic components, thereby avoiding welding quality problems, thereby improving the yield rate of the FPC collection device and reducing its production cost.
  • FIG. 2 is a schematic structural diagram of the FPC collection device when the reinforcing structure 70 is configured as a reinforcing plate.
  • the reinforcing structure 70 can be configured with only one reinforcing plate.
  • the reinforcing plate is stacked on the lower surface of the FPC collection board 10, and the reinforcing plate corresponds to all the electronic components (including the collection chip 20, nickel sheets, thermistor, resistor, capacitor, inductor and magnetic beads, etc.), or it can be configured as multiple reinforcement boards, and the multiple reinforcement boards are spaced apart along the length direction of the FPC acquisition board 10, and one reinforcement board corresponds to at least A voltage detection component is provided; the former can simplify the assembly process of the FPC collection device and help reduce its production cost, while the latter can enable the FPC collection board 10 to still maintain its ability to bend and deform in the length direction, thereby maintaining its ability to absorb the expansion of the battery core. ability.
  • the reinforcing structure 70 is configured with only one reinforcing plate, for example, when it is configured as a 0.5mm thin steel sheet, it also has a certain bending deformation ability, that is, it can enable the FPC collection device to absorb battery cores.
  • the reinforcing plate may be a plastic plate or a metal plate, such as an epoxy resin sheet or a steel sheet, and the reinforcing plate is fixed on the lower surface of the FPC collection plate 10 by adhesive pressure.
  • the reinforcing structure may also be a cured glue layer or a hot melt glue layer coated on the lower surface of the FPC collection board.
  • This application also proposes a power battery, including a battery core and the aforementioned FPC collection device.
  • the specific structure of the FPC collection device refers to the above embodiments. Since this power battery adopts all the technical solutions of all the above embodiments, it at least has All the beneficial effects brought by the technical solutions of the above embodiments will not be repeated here. Among them, the voltage detection part and the temperature detection part of the FPC collection device are arranged on the surface of the battery core.
  • This application also proposes a vehicle, including the aforementioned power battery.
  • the power battery includes a battery core and the aforementioned FPC collection device.
  • the specific structure of the FPC collection device refers to the above embodiments. Since this vehicle adopts all the features of all the above embodiments, The technical solution therefore at least has all the beneficial effects brought by the technical solution of the above embodiments, and will not be described again one by one.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)

Abstract

本申请公开一种FPC采集装置、动力电池和车辆，其中，所述FPC采集装置包括：FPC采集板，用以安装在所述动力电池的电芯表面，所述FPC采集板的内部刻蚀有线路；采集芯片，设于所述FPC采集板，并与所述线路电连接；以及电压检测件和/或温度检测件，设于所述FPC采集板，并与所述线路电连接，所述电压检测件用以获取所述电芯的电压，所述温度检测件用以获取所述电芯的温度。

Description

FPC采集装置、动力电池和车辆
本申请要求于2022年3月17号申请的、申请号为202220591681.3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
本申请涉及动力电池技术领域，特别涉及一种FPC（Flexible Printed Circuit，柔性电路板）采集装置、动力电池和车辆。
 背景技术
目前动力电池对电芯的电压和温度采集，通常是通过线束转接至BMS（Battery Management System，电池管理系统)进行采集，这一采集电芯运行参数的电子电气结构较为复杂，导致动力电池装配效率低的问题。据此，急需提供一种新的采集结构以解决该问题。
 技术问题
本申请的主要目的是提供一种FPC采集装置，旨在简化动力电池的电子电气结构，从而提升其装配效率。
 解决方案
为实现上述目的，本申请提出的FPC采集装置用于动力电池，该FPC采集装置包括：
FPC采集板，用以安装在所述动力电池的电芯表面，所述FPC采集板的内部刻蚀有线路；
采集芯片，设于所述FPC采集板，并与所述线路电连接；以及
电压检测件和/或温度检测件，设于所述FPC采集板，并与所述线路电连接，所述电压检测件用以获取所述电芯的电压，所述温度检测件用以获取所述电芯的温度。
在一实施方式中，所述电压检测件配置为镍片，所述镍片的一端焊接于所述FPC采集板，另一端连接于所述电芯的极柱。
在一实施方式中，所述温度检测件配置为NTC热敏电阻，所述温度检测件用以检测所述镍片的温度。
在一实施方式中，所述温度检测件通过导热结构连接于所述镍片。
在一实施方式中，所述采集芯片、所述电压检测件和所述温度检测件均设于所述FPC采集板的上表面，所述FPC采集装置还包括补强结构，所述补强结构对应所述采集芯片、所述电压检测件及所述温度检测件设置，并设于所述FPC采集板的下表面。
在一实施方式中，所述电压检测件设有多个，多个所述电压检测件沿所述FPC采集板的长度方向间隔分布，所述补强结构配置为一个补强板，所述补强板叠设于所述FPC采集板的下表面，并对应所有的所述电压检测件设置。
在一实施方式中，所述电压检测件设有多个，多个所述电压检测件沿所述FPC采集板的长度方向间隔分布，所述补强结构包括多个补强板，多个所述补强板沿FPC采集板的长度方向间隔分布，且一所述补强板对应至少一所述电压检测件设置。
在一实施方式中，所述FPC采集装置还包括设于所述FPC采集板的电压均衡模块，所述电压均衡模块与所述线路电连接。
在一实施方式中，所述FPC采集装置还包括设于所述FPC采集板的滤波模块，所述滤波模块与所述线路电连接。
本申请还提出一种动力电池，包括电芯、及前述的FPC采集装置，所述FPC采集装置的FPC采集板设于所述电芯的表面。
本申请还提出一种车辆，包括前述的动力电池。
 有益效果
本申请技术方案中，通过将采集芯片、电压检测件及温度检测件等元器件直接集成在FPC采集板上，能够简化动力电池中用于采集电芯运行参数的相关电子电气结构，并便于动力电池的装配，从而提升动力电池的生产效率，并降低生产成本。其次，相较于现有技术中采用线束转接的结构方案，能够节省转接成本，从而降低动力电池的生产成本。另外，由于FPC采集板具有柔性及弹性形变能力，所以当出现电芯膨胀的情况时，设于电芯表面的FPC采集板能够良好地吸收该电芯形变量。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请FPC采集装置一实施例的一结构示意图；
图2为图1中FPC采集装置的另一结构示意图。
附图标号说明：
标号 名称 标号 名称
10 FPC采集板 50 电压均衡模块
11 出线结构 60 滤波模块
20 采集芯片 70 补强结构
30 电压检测件
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。 
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，全文中出现的“和/或”的含义，包括三个并列的方案，以“A和/或B”为例，包括A方案、或B方案、或A和B同时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
目前动力电池对电芯的电压和温度采集，通常是通过线束转接至BMS（Battery Management System，电池管理系统)进行采集，这一采集电芯运行参数的电子电气结构较为复杂，导致动力电池装配效率低、制造成本高的问题。据此，急需提供一种新的采集结构以解决该问题。
鉴于此，本申请提出了一种FPC采集装置，用于动力电池，参照图1，在本申请一实施例中，该FPC采集装置包括：
FPC采集板10，用以安装在动力电池的电芯表面，FPC采集板10的两端均设有出线结构11，FPC采集板10的内部刻蚀有与出线结构11电连接的线路；
采集芯片20，设于FPC采集板10，并与线路电连接；以及
电压检测件30和/或温度检测件（附图中未示出），设于FPC采集板10，并与线路电连接，电压检测件30用以获取电芯的电压，温度检测件用以获取电芯的温度。
本申请技术方案中，通过将采集芯片20、电压检测件30及温度检测件等元器件直接集成在FPC采集板10上，能够简化动力电池中用于采集电芯运行参数的相关电子电气结构，并便于动力电池的装配，从而提升动力电池的生产效率，并降低生产成本。其次，相较于现有技术中采用线束转接的结构方案，能够节省转接成本，从而降低动力电池的生产成本。另外，由于FPC采集板10具有柔性及弹性形变能力，所以当出现电芯膨胀的情况时，设于电芯表面的FPC采集板10能够良好地吸收该电芯形变量。具体的，采集芯片20控制电压检测件30和温度检测件根据设计要求，对电芯的电压和温度参数进行实时或周期性地采集，并通过出线结构11与外部电子元器件进行通信连接，以实现对动力电池的管理；其中，采集芯片20可以是MCU（Micro Control Unit，微控制单元）、MPU（Micro Processor Unit，微处理器）或SOC（System on Chip，系统级芯片，也称片上系统）等。
需要说明的是，本实施例中，出线结构11配置为焊接于FPC采集板10上的连接器，在FPC采集板10的两端均设有出线结构11，能够方便电子元器件从两个连接器中择一地进行通信连接，从而有利于提升FPC采集装置的通用性。当然，也可以是两个连接器均进行通信连接。
本实施例中，电压检测件30配置为镍片，镍片的一端焊接于FPC采集板10，另一端连接于电芯的极柱。如此，通过将镍片焊接在FPC采集板10上，能够提高镍片的安装可靠性，从而保证其电压采集工作的稳定性。当然，在其他实施例中，电压检测件还可以配置为铜片，本领域技术人员可以理解的是，电压检测件的具体结构可根据实际要求设置，只要能够实现获取电池电芯的电压即可。
本实施例中，温度检测件配置为NTC（Negative Temperature Coefficient，负温度系数）热敏电阻，温度检测件用以检测镍片的温度。如此，通过检测镍片的温度来间接获取电芯的温度，能够简化FPC采集板10的结构及制造工艺，从而降低FPC采集板10的制造成本。当然，在其他实施例中，温度检测件还可以配置为 PTC（Positive Temperature Coefficient）热敏电阻，或热电偶等；温度检测件还可以是直接连接于电芯的极柱，并直接检测电芯的温度。
本实施例中，温度检测件通过导热结构连接于镍片。如此，能够简化FPC采集板10的结构和制造工艺，从而降低其制造成本。具体而言，导热结构可以是导热胶、导热硅脂，或者是石墨烯片。当然，在其他实施例中，还可以是温度检测件的一端搭接在镍片上。
本实施例中，FPC采集装置还包括设于FPC采集板10的电压均衡模块50和滤波模块60，电压均衡模块50和滤波模块60均与线路电连接。具体而言，电压均衡模块50通常包括电阻元件，并用以提高电池组的充电电压，对电池进行均衡性的充电，以达到均衡电池组中各个电池单体特性，延长电池使用寿命；滤波模块60通常包括电容、电感及磁珠元件，并用以减小脉动的直流电压中的交流成分，保留其直流成分，使输出电压纹波系数降低，波形变得比较平滑。本领域技术人员可以理解的是，电压均衡模块50和滤波模块60的具体结构可根据实际要求设置，只要是能实现其对应功能的结构均可。如此，进一步将其他功能模块及其电子元器件集成在FPC采集板10上，能够进一步简化动力电池的结构，从而提升动力电池的生产效率。
本实施例中，采集芯片20、电压检测件30、温度检测件、电压均衡模块50及滤波模块60均设于FPC采集板10的上表面，FPC采集装置还包括补强结构70，补强结构70对应采集芯片20、电压检测件30、温度检测件、电压均衡模块50及滤波模块60设置，并设于FPC采集板10的下表面。具体而言，采集芯片20、镍片、热敏电阻、电阻、电容、电感及磁珠等电子元器件，均是通过焊接固定在FPC采集板10的上表面。可以理解的，FPC采集板10本身的柔性，不利于电子元器件与FPC采集板10的焊接固定，也即，容易出现诸如虚焊的焊接质量问题。而通过在FPC的下表面贴设补强结构70，能够在电子元器件焊接时提供有效的支撑作用，从而避免出现焊接质量问题，进而提升FPC采集装置的良品率，并降低其生产成本。
本实施例中，电芯设有多个，每一电芯的电压均需要进行采集，所以镍片对应设有多个，并且与电芯的排布方向一致，均是沿FPC采集板10的长度方向分布。请参照图2，其中图2为补强结构70配置为一个补强板时FPC采集装置的结构示意图。补强结构70既可以是配置为只有一个补强板，该补强板叠设于FPC采集板10下表面，且该补强板对应上所有的电子元器件（包括采集芯片20、镍片、热敏电阻、电阻、电容、电感及磁珠等），也可以是配置为多块补强板，且多个补强板并沿FPC采集板10的长度方向间隔分布，一个补强板对应至少一个电压检测件设置；前者能够简化FPC采集装置的装配工序，有利于降低其生产成本，而后者能够使FPC采集板10仍保持其长度方向上弯曲形变的能力，从而保持其吸收电芯膨胀的能力。当然，补强结构70配置为只有一个补强板的实施例中，例如配置为0.5mm的薄钢片时，其也具备一定的弯曲形变能力，也即，能够使FPC采集装置满足吸收电芯膨胀的能力。具体而言，补强板可以是塑料板或金属板，例如环氧树脂片或钢片等，补强板通过粘接压合固定在FPC采集板10的下表面。当然，在其他实施例中，补强结构还可以是涂覆在FPC采集板下表面的固化胶层或热熔胶层。
本申请还提出一种动力电池，包括电芯、及前述的FPC采集装置，该FPC采集装置的具体结构参照上述实施例，由于本动力电池采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，FPC采集装置的电压检测件和温度检测件设于电芯的表面。
本申请还提出一种车辆，包括前述的动力电池，该动力电池包括电芯及前述的FPC采集装置，该FPC采集装置的具体结构参照上述实施例，由于本车辆采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上仅为本申请的可选实施例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (10)

  1. 一种FPC采集装置，用于动力电池，其中，所述FPC采集装置包括：
    FPC采集板，用以安装在所述动力电池的电芯表面，所述FPC采集板的内部刻蚀有线路；
    采集芯片，设于所述FPC采集板，并与所述线路电连接；以及
    电压检测件和/或温度检测件，设于所述FPC采集板，并与所述线路电连接，所述电压检测件用以获取所述电芯的电压，所述温度检测件用以获取所述电芯的温度。
  2. 如权利要求1所述的FPC采集装置，其中，所述电压检测件配置为镍片，所述镍片的一端焊接于所述FPC采集板，另一端连接于所述电芯的极柱。
  3. 如权利要求2所述的FPC采集装置，其中，所述温度检测件配置为NTC热敏电阻，所述温度检测件用以检测所述镍片的温度。
  4. 如权利要求3所述的FPC采集装置，其中，所述温度检测件通过导热结构连接于所述镍片。
  5. 如权利要求1所述的FPC采集装置，其中，所述采集芯片、所述电压检测件和所述温度检测件均设于所述FPC采集板的上表面，所述FPC采集装置还包括补强结构，所述补强结构对应所述采集芯片、所述电压检测件及所述温度检测件设置，并设于所述FPC采集板的下表面。
  6. 如权利要求5所述的FPC采集装置，其中，所述电压检测件设有多个，多个所述电压检测件沿所述FPC采集板的长度方向间隔分布，所述补强结构配置为一个补强板，所述补强板叠设于所述FPC采集板的下表面，并对应所有的所述电压检测件设置。
  7. 如权利要求5所述的FPC采集装置，其中，所述电压检测件设有多个，多个所述电压检测件沿所述FPC采集板的长度方向间隔分布，所述补强结构包括多个补强板，多个所述补强板沿FPC采集板的长度方向间隔分布，且一所述补强板对应至少一所述电压检测件设置。
  8. 如权利要求1至7任一项所述的FPC采集装置，其中，所述FPC采集装置还包括设于所述FPC采集板的电压均衡模块，所述电压均衡模块与所述线路电连接；
    和/或，所述FPC采集装置还包括设于所述FPC采集板的滤波模块，所述滤波模块与所述线路电连接。
  9. 一种动力电池，包括电芯、及如权利要求1至8任一项所述的FPC采集装置，所述FPC采集装置的FPC采集板设于所述电芯的表面。
  10. 一种车辆，包括如权利要求9所述的动力电池。
PCT/CN2023/081374 2022-03-17 2023-03-14 Fpc采集装置、动力电池和车辆 Ceased WO2023174285A1 (zh)

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