WO2023174285A1 - Appareil de collecte de fpc, batterie d'alimentation et véhicule - Google Patents

Appareil de collecte de fpc, batterie d'alimentation et véhicule 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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WO
WIPO (PCT)
Prior art keywords
fpc
board
collection
voltage detection
voltage
Prior art date
Application number
PCT/CN2023/081374
Other languages
English (en)
Chinese (zh)
Inventor
潘福中
王鹏
郑松太
李慧明
王旭东
牛亚琪
Original Assignee
浙江极氪智能科技有限公司
威睿电动汽车技术(宁波)有限公司
浙江吉利控股集团有限公司
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
Publication date
Application filed by 浙江极氪智能科技有限公司, 威睿电动汽车技术(宁波)有限公司, 浙江吉利控股集团有限公司 filed Critical 浙江极氪智能科技有限公司
Publication of WO2023174285A1 publication Critical patent/WO2023174285A1/fr

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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

Sont divulgués dans la présente demande un appareil de collecte de FPC, une batterie d'alimentation et un véhicule. L'appareil de collecte de FPC comprend : une carte de collecte de FPC qui est utilisée pour être montée sur la surface d'une cellule de la batterie d'alimentation, un circuit étant formé dans la carte de collecte de FPC au moyen d'une gravure ; une puce de collecte qui est placée sur la carte de collecte de FPC et est connectée électriquement au circuit ; et un élément de mesure de tension et/ou un élément de mesure de température qui est/sont agencé(s) sur la carte de collecte de FPC et connecté(s) électriquement au circuit, l'élément de mesure de tension étant utilisé pour acquérir la tension de la cellule et l'élément de mesure de température étant utilisé pour acquérir la température de la cellule.
PCT/CN2023/081374 2022-03-17 2023-03-14 Appareil de collecte de fpc, batterie d'alimentation et véhicule WO2023174285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202220591681.3U CN217086679U (zh) 2022-03-17 2022-03-17 Fpc采集装置、动力电池和车辆
CN202220591681.3 2022-03-17

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WO2023174285A1 true WO2023174285A1 (fr) 2023-09-21

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217086679U (zh) * 2022-03-17 2022-07-29 浙江极氪智能科技有限公司 Fpc采集装置、动力电池和车辆

Citations (7)

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Publication number Priority date Publication date Assignee Title
CN207233892U (zh) * 2017-07-25 2018-04-13 深圳市沃特玛电池有限公司 一种电池箱内采集板
CN210040356U (zh) * 2019-08-26 2020-02-07 上海汽车集团股份有限公司 车载电池模块单元
CN211376865U (zh) * 2020-02-11 2020-08-28 力神动力电池系统有限公司 一种动力电池模组的采样用柔性印刷电路板组件
CN213304218U (zh) * 2020-11-12 2021-05-28 中车时代电动汽车股份有限公司 一种新能源汽车及其动力电池和fpc采集装置
WO2021179733A1 (fr) * 2020-03-13 2021-09-16 苏州清陶新能源科技有限公司 Module de batterie à garniture souple et son procédé d'assemblage
CN113594562A (zh) * 2020-09-29 2021-11-02 欣旺达电动汽车电池有限公司 电芯、电池模组、电池包及电动汽车
CN217086679U (zh) * 2022-03-17 2022-07-29 浙江极氪智能科技有限公司 Fpc采集装置、动力电池和车辆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207233892U (zh) * 2017-07-25 2018-04-13 深圳市沃特玛电池有限公司 一种电池箱内采集板
CN210040356U (zh) * 2019-08-26 2020-02-07 上海汽车集团股份有限公司 车载电池模块单元
CN211376865U (zh) * 2020-02-11 2020-08-28 力神动力电池系统有限公司 一种动力电池模组的采样用柔性印刷电路板组件
WO2021179733A1 (fr) * 2020-03-13 2021-09-16 苏州清陶新能源科技有限公司 Module de batterie à garniture souple et son procédé d'assemblage
CN113594562A (zh) * 2020-09-29 2021-11-02 欣旺达电动汽车电池有限公司 电芯、电池模组、电池包及电动汽车
CN213304218U (zh) * 2020-11-12 2021-05-28 中车时代电动汽车股份有限公司 一种新能源汽车及其动力电池和fpc采集装置
CN217086679U (zh) * 2022-03-17 2022-07-29 浙江极氪智能科技有限公司 Fpc采集装置、动力电池和车辆

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