WO2023142971A1 - 柔性电路板组件、电池及用电装置 - Google Patents

柔性电路板组件、电池及用电装置 Download PDF

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Publication number
WO2023142971A1
WO2023142971A1 PCT/CN2023/071029 CN2023071029W WO2023142971A1 WO 2023142971 A1 WO2023142971 A1 WO 2023142971A1 CN 2023071029 W CN2023071029 W CN 2023071029W WO 2023142971 A1 WO2023142971 A1 WO 2023142971A1
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WO
WIPO (PCT)
Prior art keywords
groove
main body
flexible circuit
circuit board
segment
Prior art date
Application number
PCT/CN2023/071029
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English (en)
French (fr)
Inventor
高宇
王冲
郑陈铃
Original Assignee
宁德时代新能源科技股份有限公司
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Publication of WO2023142971A1 publication Critical patent/WO2023142971A1/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
    • H01M50/204—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • 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

  • the present application relates to the field of batteries, in particular, to a flexible circuit board assembly, a battery and an electrical device.
  • Batteries are widely used in the field of new energy, such as electric vehicles, new energy vehicles, etc. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry. In order to facilitate the management of the battery, it is necessary to collect the voltage and temperature of each battery cell in the battery.
  • a flexible circuit board is generally used to connect to each battery cell, so as to collect voltage and temperature of the battery cell. However, after the battery is used for a period of time, the flexible circuit board will be separated from the battery cell, so that the voltage and temperature of the battery cell can no longer be collected.
  • the purpose of the embodiments of the present application is to provide a flexible circuit board assembly, a battery and an electrical device, which aims to solve the problem in the related art that the flexible circuit board will be detached from the battery cell after the battery has been used for a period of time.
  • the embodiment of the present application provides a flexible circuit board assembly
  • the flexible circuit board assembly includes a board main body and a sampling terminal, and the sampling terminal is used to collect the electrical data of the target part; wherein, the board main body A groove portion is provided, and the groove portion penetrates the plate body along the thickness direction of the plate body to divide the plate body into a body portion, a connection portion and a deformation portion, and the connection portion is used to connect the sampling
  • the deformation part is connected to the body part and the connection part, and the deformation part is configured to be deformable so as to allow the connection part to be displaced relative to the body part.
  • the flexible circuit board assembly forms a deformation portion and a connection portion on the board body by opening a groove portion passing through the board body along the thickness direction of the board body, wherein the connection portion can be connected to the sampling terminal, when the sampling terminal When subjected to external force, the deformation part can be deformed, thereby allowing the sampling terminal to move relative to the main body, so as to prevent the sampling terminal from being unable to move relative to the board main body when the sampling terminal is subjected to external force, resulting in damage to the sampling terminal or the board main body.
  • the battery cell will expand and displace, and then an external force will be applied to the sampling terminal.
  • the sampling terminal of the flexible circuit board assembly provided by the embodiment of the application can move with the expansion of the battery cell, so it will not cause damage to the flexible circuit.
  • the board assembly is separated from the battery cell, and can continuously collect the voltage and temperature of the battery cell.
  • the main body part, the connecting part and the deformation part of the flexible circuit board assembly can be formed at one time by stamping the main body of the board, and the manufacturing is simple and convenient, and the efficiency is high.
  • the board main body has an edge;
  • the groove part includes a first groove and a second groove, and the first groove includes a first groove segment and a second groove connected in sequence segment and a third slot segment, one end of the first slot segment runs through the edge, the second slot segment extends along the extending direction of the edge, the first slot segment and the third slot segment are located on the first slot segment
  • the plate main body forms the deformation part in the area between the second groove and the third groove segment.
  • the main body part and the connecting part are divided on the board main body, and the third groove section and the second groove section are opened on the board main body.
  • the strength of the part between the connecting part and the main part is weakened, so that it is easy to deform, so as to divide the deformed part between the main part and the connecting part.
  • the sampling terminal when the sampling terminal is subjected to an external force, the external force is transmitted to the connecting part, and the connecting part pulls the deformed part, causing the deformed part to deform, thereby allowing the sampling terminal to move relative to the main body, preventing the sampling terminal from being unable to face the main body of the board when the sampling terminal is subjected to an external force damage to the sampling terminals or board body.
  • the second groove extends from the edge to a direction close to the second groove section
  • the third groove section extends from the second groove section to a direction close to the second groove section.
  • the second groove is located between the third groove segment and the first groove segment.
  • the second groove extends from the edge to the second groove segment, and the second groove is closer to the connecting portion than the third groove segment.
  • the second groove includes a fourth groove segment and a fifth groove segment connected in sequence, one end of the fourth groove segment runs through the edge, and the fifth groove
  • the segment and the third groove segment are arranged to be intertwined such that the deformation extends along a helical trajectory.
  • the deformation part extends along the helical track by making the third groove segment and the fifth groove segment intertwine, and the deformation part extending along the helical track is easier to deform and has a larger deformation range.
  • the amount of deformation of the deformation portion allows the connecting portion to be displaced beyond the first groove segment along the extending direction of the edge.
  • the deformation of the deformation portion allows the connection portion to be displaced beyond the first groove segment along the extending direction of the edge, so that the connection portion has a sufficient relative displacement relative to the main body to accommodate the expansion of the battery cell displacement.
  • the board main body includes a weakened portion, and the weakened portion is connected to two opposite groove walls of the first groove segment.
  • the deformation part includes a first winding section and a second winding section, one end of the first winding section is connected to one end of the second winding section , the first winding section and the second winding section are wound in the same direction with the connection position as the winding center; the other end of the first winding section is connected to the connecting part, and the second winding section The other end of the winding section is connected to the body part.
  • the deformation part is wound in the same direction by the first winding section and the second winding section to form a winding structure.
  • the winding structure is relatively easy to deform and has a large deformation range, which can adapt to the shape of the battery cell. Expansion displacement.
  • the deformation part extends along an S-shaped track.
  • the deformation portion extending along the S-shaped track is relatively easy to deform and also has relatively good strength.
  • the deformation part extends along a spiral track.
  • the deformation portion extending along the helical track is relatively easy to be deformed, and the deformation range is relatively large.
  • the embodiment of the present application also provides a battery, the battery includes a plurality of battery cells, a busbar and the above-mentioned flexible circuit board assembly, the busbar is used to connect the plurality of battery cells in series or in parallel, The sampling terminal is connected to the bus.
  • an embodiment of the present application further provides an electric device, the electric device includes the above-mentioned battery, and the battery is used to provide electric energy.
  • Fig. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • Figure 2 is an exploded view of a battery provided in some embodiments of the present application.
  • Fig. 3 is a schematic diagram of the connection between the flexible circuit board assembly and the busbar provided by some embodiments of the present application;
  • FIG. 4 is a schematic structural diagram of a flexible circuit board assembly provided by some embodiments of the present application.
  • Figure 5 is an enlarged view of position A in Figure 4.
  • FIG. 6 is a schematic structural diagram of a flexible circuit board assembly provided by other embodiments of the present application.
  • Icons 100-battery; 10-box; 11-first part; 12-second part; 20-battery unit; 30-flexible circuit board assembly; 31-board main body; 311-body part; 312-deformation part; 3121-first winding section; 3122-second winding section; 313-connecting part; 32-sampling terminal; 33-groove; 331-first groove; 3311-first groove section; 3312-second groove section ;3313-the third slot section; 332-the second slot section; 3321-the fourth slot section; 3322-the fifth slot section; 34-edge; ;1000-vehicle.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • Batteries are not only used in energy storage power systems such as hydropower, firepower, wind power and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.
  • a flexible circuit board is generally used to connect to each battery cell, so as to collect voltage and temperature of the battery cell.
  • the flexible circuit board will be separated from the battery cell, so that the voltage and temperature of the battery cell can no longer be collected.
  • the inventors have found through research that the chemical reaction of the battery cell during the charging and discharging process will cause the volume of the battery cell to change, resulting in relative stress at the connection between the flexible circuit board and the battery cell. As the service time of the battery increases, the battery cell will have a large expansion displacement. When the expansion reaches a certain level, the sampling connection of the flexible circuit board will appear torn, fall off and other failures, resulting in the failure of the battery cell. The voltage and temperature of the body are collected.
  • the flexible circuit board assembly forms a deformation part and a connecting part on the board body by opening a groove through the board body along the thickness direction of the board body.
  • the connection part can be connected with the sampling terminal.
  • the deformation part can be deformed, thereby allowing the sampling terminal to move relative to the main body, and avoiding the sampling terminal being unable to move relative to the main body of the board when the sampling terminal is subjected to an external force. or the board body is damaged.
  • the battery cell When the battery is used for a period of time, the battery cell will expand and displace, and then an external force will be applied to the sampling terminal.
  • the sampling terminal of the flexible circuit board assembly provided by the embodiment of the application can move with the expansion of the battery cell, so it will not cause damage to the flexible circuit.
  • the board assembly is separated from the battery cell, and can continuously collect the voltage and temperature of the battery cell.
  • the main body part, the connecting part and the deformation part of the flexible circuit board assembly can be formed at one time by stamping the main body of the board, and the manufacturing is simple and convenient, and the efficiency is high.
  • the flexible circuit board assembly disclosed in the embodiments of the present application can be used for a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.
  • the battery equipped with the flexible circuit board disclosed in this application can be used to form the power supply system of the electric device, which is beneficial to improve the stability of battery performance and battery life.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example for description.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is an exploded view of the battery 100 provided by some embodiments of the present application.
  • FIG. 3 is a schematic diagram of the connection between the flexible circuit board assembly 30 and the busbar 40 provided by some embodiments of the present application.
  • the battery 100 includes a box body 10 , a battery cell 20 , a flexible circuit board assembly 30 and a busbar 40 , and the battery cell 20 is accommodated in the box body 10 .
  • the box body 10 is used to provide accommodating space for the battery cells 20 , and the box body 10 may adopt various structures.
  • the box body 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, the first part 11 and the second part 12 jointly define a of accommodation space.
  • the second part 12 can be a hollow structure with one end open, the first part 11 can be a plate-shaped structure, and the first part 11 covers the opening side of the second part 12, so that the first part 11 and the second part 12 jointly define an accommodation space ;
  • the first part 11 and the second part 12 can also be hollow structures with one side opening, and the opening side of the first part 11 is covered by the opening side of the second part 12 .
  • the box body 10 formed by the first part 11 and the second part 12 can be in various shapes, such as a cylinder, a cuboid and the like.
  • the battery cell 20 refers to the smallest unit constituting the battery 100 .
  • the battery 100 there may be multiple battery cells 20 , and the multiple battery cells 20 may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells 20 are connected in series and in parallel.
  • a plurality of battery cells 20 can be directly connected in series, in parallel or mixed together, and then the whole composed of a plurality of battery cells 20 is housed in the box 10; of course, the battery 100 can also be a plurality of battery cells 20
  • the battery modules are firstly connected in series or parallel or in combination, and then multiple battery modules are connected in series or in parallel or in combination to form a whole, which is accommodated in the case 10 .
  • each battery cell 20 may be a secondary battery cell or a primary battery cell; it may also be a lithium-sulfur battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, but is not limited thereto.
  • the battery cell 20 may be in the form of a cylinder, a flat body, a cuboid or other shapes.
  • the flexible circuit board assembly 30 is a component that is connected to the battery cell 20 and collects electrical data such as voltage and temperature of the battery cell 20 .
  • the bus 40 is a component for realizing electrical connection between the plurality of battery cells 20 .
  • the flexible circuit board assembly 30 is electrically connected to the busbar 40, and the busbar 40 is electrically connected to the battery cell 20, that is, the flexible circuit board assembly 30 is electrically connected to the battery cell 20 through the busbar 40, In other words, the busbar 40 is electrically connected to the flexible circuit board assembly 30 and the battery cells 20 .
  • FIG. 4 is a schematic structural diagram of a flexible circuit board assembly 30 provided by some embodiments of the present application.
  • FIG. 5 is an enlarged view of position A in FIG. 4 .
  • a flexible circuit board assembly 30 is provided, and the flexible circuit board assembly 30 includes a board main body 31 and a sampling terminal 32 .
  • the sampling terminal 32 is used to collect electrical data of the target.
  • the plate main body 31 is provided with a groove portion 33 , and the groove portion 33 penetrates the plate main body 31 along the thickness direction of the plate main body 31 to divide the plate main body 31 into a main body portion 311 , a connecting portion 313 and a deformation portion 312 .
  • connection part 313 is used to connect the sampling terminal 32 .
  • the deformation part 312 is connected to the body part 311 and the connection part 313 , and the deformation part 312 is configured to be deformable so as to allow the connection part 313 to be displaced relative to the body part 311 .
  • the board main body 31 is the main part of the flexible circuit board assembly 30 , which can transfer, collect and/or process the electrical data collected by the sampling terminal 32 .
  • the sampling terminal 32 is a component used in the flexible circuit board assembly 30 to collect electrical data of the target.
  • Electrical data includes, but is not limited to, data such as temperature, voltage or current of the target.
  • the groove portion 33 is a groove penetrating through the plate main body 31 along the thickness direction of the plate main body 31 .
  • the body part 311 is the main structure of the board body 31
  • the connection part 313 is the part on the board body 31 for connecting the sampling terminal 32
  • the deformation part 312 is the part between the body part 311 and the connection part 313 on the board body 31 .
  • the deformation portion 312 can be deformed, so that the connecting portion 313 can be displaced relative to the main body portion 311 .
  • Both the deformation part 312 and the connection part 313 are electrically connected to the body part 311 , so that the sampling terminal 32 can transmit the collected electrical data to the body part 311 when it is electrically connected to the connection part 313 .
  • the flexible circuit board assembly 30 forms a deformation portion 312 and a connection portion 313 on the board body 31 by opening a groove portion 33 through the board body 31 along the thickness direction of the board body 31, wherein the connection portion 313 can be connected to the sampling terminal 32,
  • the deformation part 312 can be deformed, thereby allowing the sampling terminal 32 to move relative to the body part 311, so as to prevent the sampling terminal 32 from being unable to move relative to the board main body 31 when the sampling terminal 32 is subjected to an external force, resulting in the sampling terminal 32 or the board
  • the main body 31 is damaged.
  • the battery cell 20 When the battery 100 is used for a period of time, the battery cell 20 will expand and displace, and then an external force will be applied to the sampling terminal 32.
  • the sampling terminal 32 of the flexible circuit board assembly 30 provided in the embodiment of the present application can follow the expansion of the battery cell 20 and move. Therefore, the flexible circuit board assembly 30 will not be separated from the battery cell 20 , and the voltage and temperature of the battery cell 20 can be continuously collected.
  • the body part 311 , the connecting part 313 and the deformation part 312 of the flexible circuit board assembly 30 can be formed at one time by stamping the main body 31 of the board, which is simple and convenient to manufacture and has high efficiency.
  • connection part 313 is provided with a pad, and the deformation part 312 is built with a wire, and the wire electrically connects the pad with the body part 311 .
  • the sampling terminal 32 is welded to the pad, so that the sampling terminal 32 can be electrically connected to the main body 311 , so that the electrical data collected by the sampling terminal 32 can be transmitted to the main body 311 .
  • the board body 31 has an edge 34 .
  • the groove portion 33 includes a first groove 331 and a second groove 332 .
  • the first groove 331 includes a first groove segment 3311, a second groove segment 3312 and a third groove segment 3313 connected in sequence, one end of the first groove segment 3311 runs through the edge 34, and the second groove segment 3312 extends along the extending direction of the edge 34,
  • the first slot section 3311 and the third slot section 3313 are located on the same side of the second slot section 3312 .
  • One end of the second groove 332 runs through the edge 34 , and the plate main body 31 forms a deformation portion 312 in a region between the second groove 332 and the third groove segment 3313 .
  • the edge 34 refers to a side portion of the board main body 31 .
  • the second groove segment 3312 is a groove on the board main body 31 extending in the same direction as the edge 34 .
  • the first groove section 3311 is a groove that runs through the edge 34 and extends to the second groove section 3312 .
  • the third groove segment 3313 is a groove approaching the edge 34 from the second groove segment 3312 .
  • the first slot section 3311 , the second slot section 3312 and the third slot section 3313 are sequentially connected.
  • the second groove 332 is another groove extending through the edge 34 , and the second groove 332 is separated from the first groove 331 to form a deformation portion 312 between the second groove 332 and the third groove segment 3313 .
  • the main body part 311 and the connecting part 313 are divided on the board main body 31, and the third groove section 3313 and the second groove section are opened on the board main body 31.
  • 332 weakening the strength of the portion between the connecting portion 313 and the main body portion 311 to make it easy to deform, so as to divide the deforming portion 312 between the main body portion 311 and the connecting portion 313 .
  • the sampling terminal 32 when the sampling terminal 32 is subjected to an external force, the external force is transmitted to the connecting portion 313, and the connecting portion 313 pulls the deforming portion 312, so that the deforming portion 312 is deformed, thereby allowing the sampling terminal 32 to move relative to the body portion 311, and preventing the sampling terminal 32 from being affected.
  • the sampling terminal 32 or the board main body 31 cannot be moved relative to the board main body 31 to cause damage.
  • the second groove 332 extends from the edge 34 toward the second groove segment 3312
  • the third groove segment 3313 extends from the second groove segment 3312 toward the edge 34 .
  • the second groove 332 is located between the third groove section 3313 and the first groove section 3311 .
  • the second groove 332 extends from the edge 34 to the direction close to the second groove segment 3312 may mean that the second groove 332 extends from the edge 34 to the second groove segment 3312 along a direction perpendicular to the extending direction of the edge 34, or it may be The second groove 332 extends from the edge 34 to the second groove segment 3312 along a direction forming an acute angle with the extending direction of the edge 34 , or the second groove 332 extends from the edge 34 to the second groove segment 3312 along a curved track.
  • the third groove segment 3313 extends from the second groove segment 3312 toward the direction close to the edge 34 may mean that the third groove segment 3313 extends from the second groove segment 3312 toward the edge 34 along a direction perpendicular to the extending direction of the edge 34, or It may be that the third groove segment 3313 extends from the second groove segment 3312 toward the edge 34 along a direction forming an acute angle with the extending direction of the edge 34, or it may be that the third groove segment 3313 extends from the second groove segment 3312 toward the edge along a curved track. 34 extensions.
  • the second groove 332 extends from the edge 34 to the second groove segment 3312 , and the second groove 332 is closer to the connecting portion 313 than the third groove segment 3313 .
  • the second groove 332 can reduce heat transfer to the body portion 311 , thereby reducing the influence of heat on the body portion 311 during welding.
  • the third groove segment 3313 is located between the second groove 332 and the first groove segment 3311 in the extending direction of the edge 34 .
  • both the third groove segment 3313 and the second groove 332 are arc-shaped opening grooves.
  • the anti-tear performance of the deformation part 312 is improved.
  • FIG. 6 is a schematic structural diagram of a flexible circuit board assembly 30 provided in other embodiments of the present application.
  • the second groove 332 includes a fourth groove segment 3321 and a fifth groove segment 3322 connected in sequence, and one end of the fourth groove segment 3321 passes through the edge 34 .
  • the fifth slot section 3322 and the third slot section 3313 are arranged to be wound around each other, so that the deformation portion 312 extends along a spiral track.
  • the fourth groove segment 3321 is a part of the second groove 332 that passes through the edge 34 .
  • the fifth slot section 3322 is a part of the second slot 332 that communicates with the fourth slot section 3321 .
  • the fifth groove segment 3322 and the third groove segment 3313 can be wound around each other, so that the deformation part 312 presents a helical shape.
  • the deformed part 312 By winding the third groove segment 3313 and the fifth groove segment 3322 , the deformed part 312 extends along a helical track, and the deformed part 312 extending along the helical track is relatively easy to deform and has a larger deformation range.
  • the deformation amount of the deformation portion 312 allows the connecting portion 313 to be displaced beyond the first groove segment 3311 along the extending direction of the edge 34 .
  • the amount of deformation of the deformed part 312 allows the connecting part 313 to be displaced beyond the first groove segment 3311 along the extending direction of the edge 34", that is, when the deformation of the deformed part 312 reaches the limit or the maximum, the connecting part 313 exceeds in the extending direction of the edge 34. in the first groove section 3311.
  • connection part 313 By making the deformation of the deformation part 312 allow the connection part 313 to be displaced beyond the first groove segment 3311 along the extending direction of the edge 34, the connection part 313 can have a sufficient relative displacement relative to the main body part 311 to accommodate the battery cell 20. expansion displacement.
  • the board main body 31 includes a weakened portion 35 connected to two opposite groove walls of the first groove segment 3311 .
  • the weak portion 35 is connected to two opposite groove walls of the first groove section 3311 , that is, the weak portion 35 is connected to the connecting portion 313 and the main body portion 311 .
  • the strength of the weak portion 35 is low, and the weak portion 35 is prone to breakage when subjected to external force, so that the connecting portion 313 can move relative to the main body portion 311 when the deformation portion 312 is deformed, thereby allowing the sampling terminal 32 to move relative to the main body portion 311 , to adapt to the expansion displacement of the battery cell 20 .
  • the weak portion 35 By using the weak portion 35 to connect two opposite groove walls of the first groove section 3311 , it is convenient to locate the connecting portion 313 and the sampling terminal 32 during assembly, so as to improve the connection accuracy of the connecting portion 313 and the sampling terminal 32 .
  • the deformation part 312 includes a first winding section 3121 and a second winding section 3122 , and one end of the first winding section 3121 is connected to one end of the second winding section 3122 .
  • the first winding section 3121 and the second winding section 3122 are wound in the same direction with the connection position as the winding center.
  • the other end of the first winding section 3121 is connected to the connecting portion 313 , and the other end of the second winding section 3122 is connected to the main body 311 .
  • Both the first winding section 3121 and the second winding section 3122 extend along a helical trajectory. Two ends of the first winding section 3121 are respectively connected to the second winding section 3122 and the connection part 313 , and two ends of the second winding section 3122 are respectively connected to the first winding section 3121 and the main body part 311 .
  • the deformation part 312 forms a winding structure by winding the first winding section 3121 and the second winding section 3122 in the same direction.
  • the winding structure is relatively easy to deform and has a large deformation range, which can adapt to the expansion displacement of the battery cell 20 quantity.
  • the deformation portion 312 extends along an S-shaped trajectory.
  • the deformation portion 312 extends along an S-shaped track
  • the deformation portion 312 is S-shaped.
  • the deformation portion 312 extending along the S-shaped track is relatively easy to deform and has good strength.
  • the deformation portion 312 extends along a spiral track.
  • the deformation portion 312 extends along a spiral track
  • the deformation portion 312 may also be understood as the deformation portion 312 is in a spiral shape.
  • the deformation portion 312 extending along the helical track is relatively easy to deform and has a large deformation range.
  • the board main body 31 is provided with a plurality of grooves 33 .
  • the plurality of groove parts 33 divides the board main body 31 into a body part 311 , a plurality of connection parts 313 and a plurality of deformation parts 312 .
  • the connecting portion 313 corresponds to the deforming portion 312 one by one.
  • the deformation part 312 is connected to the main body part 311 and the connection part 313 .
  • the deformation directions of the plurality of deformation parts 312 located on both sides of the middle position point to the middle position.
  • a battery 100 is also provided, and the battery 100 includes a plurality of battery cells 20 , a busbar 40 and the above-mentioned flexible circuit board assembly 30 .
  • the busbar 40 is used to connect a plurality of battery cells 20 in series or in parallel, and the sampling terminal 32 is connected to the busbar 40 .
  • the battery cell 20 refers to the smallest unit constituting the battery 100 .
  • the battery 100 there may be multiple battery cells 20 , and the multiple battery cells 20 may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells 20 are connected in series and in parallel.
  • a plurality of battery cells 20 can be directly connected in series, in parallel or mixed together, and then the whole composed of a plurality of battery cells 20 is housed in the box 10; of course, the battery 100 can also be a plurality of battery cells 20
  • the battery modules are firstly connected in series or parallel or in combination, and then multiple battery modules are connected in series or in parallel or in combination to form a whole, which is accommodated in the case 10 .
  • each battery cell 20 may be a secondary battery cell or a primary battery cell; it may also be a lithium-sulfur battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, but is not limited thereto.
  • the battery cell 20 may be in the form of a cylinder, a flat body, a cuboid or other shapes.
  • the bus 40 is a component for realizing electrical connection between the plurality of battery cells 20 .
  • the flexible circuit board assembly 30 is electrically connected to the busbar 40, and the busbar 40 is electrically connected to the battery cell 20, that is, the flexible circuit board assembly 30 is electrically connected to the battery cell 20 through the busbar 40, or the busbar 40 is electrically connected to the The flexible circuit board assembly 30 and the battery cell 20 .
  • the battery 100 is provided with the above-mentioned flexible circuit board assembly 30.
  • the battery cell 20 expands, and the sampling terminal 32 can follow the expansion of the battery cell 20 to move, so that the flexible circuit board assembly 30 will not be separated from the battery.
  • the separation of the battery cells 20 can continuously collect the voltage and temperature of the battery cells 20 , so that the battery 100 has a longer life and stability.
  • an electric device the electric device includes the above-mentioned battery 100, and the battery 100 is used to provide electric energy.
  • FIG. 4 and FIG. 5 please refer to FIG. 4 and FIG. 5 .
  • the flexible circuit board assembly 30 includes a board main body 31 and a sampling terminal 32 , and the sampling terminal 32 is used for collecting electrical data of the object.
  • the plate main body 31 is provided with a groove portion 33 , and the groove portion 33 penetrates the plate main body 31 along the thickness direction of the plate main body 31 to divide the plate main body 31 into a main body portion 311 , a connecting portion 313 and a deformation portion 312 .
  • the connection part 313 is used to connect the sampling terminal 32 .
  • the deformation part 312 is connected to the body part 311 and the connection part 313 , and the deformation part 312 is configured to be deformable so as to allow the connection part 313 to be displaced relative to the body part 311 .
  • the panel body 31 has an edge 34 .
  • the groove portion 33 includes a first groove 331 and a second groove 332 , and the first groove 331 includes a first groove segment 3311 , a second groove segment 3312 and a third groove segment 3313 which are sequentially connected.
  • One end of the first slot section 3311 runs through the edge 34
  • the second slot section 3312 extends along the extending direction of the edge 34
  • the first slot section 3311 and the third slot section 3313 are located on the same side of the second slot section 3312 .
  • One end of the second groove 332 runs through the edge 34
  • the plate main body 31 forms a deformation portion 312 in a region between the second groove 332 and the third groove segment 3313 .
  • the second groove 332 extends from the edge 34 to the direction close to the second groove segment 3312, the third groove segment 3313 extends from the second groove segment 3312 to the direction close to the edge 34, and in the extending direction of the edge 34, the second groove 332 is located Between the third groove segment 3313 and the first groove segment 3311 .
  • the flexible circuit board assembly 30 forms a deformation portion 312 and a connection portion 313 on the board body 31 by opening a groove portion 33 through the board body 31 along the thickness direction of the board body 31, wherein the connection portion 313 can be connected to the sampling terminal 32,
  • the deformation part 312 can be deformed, thereby allowing the sampling terminal 32 to move relative to the body part 311, so as to prevent the sampling terminal 32 from being unable to move relative to the board main body 31 when the sampling terminal 32 is subjected to an external force, resulting in the sampling terminal 32 or the board
  • the main body 31 is damaged.
  • the battery cell 20 When the battery 100 is used for a period of time, the battery cell 20 will expand and displace, and then an external force will be applied to the sampling terminal 32.
  • the sampling terminal 32 of the flexible circuit board assembly 30 provided in the embodiment of the present application can follow the expansion of the battery cell 20 and move. Therefore, the flexible circuit board assembly 30 will not be separated from the battery cell 20 , and the voltage and temperature of the battery cell 20 can be continuously collected.
  • the body part 311 , the connecting part 313 and the deformation part 312 of the flexible circuit board assembly 30 can be formed at one time by stamping the main body 31 of the board, which is simple and convenient to manufacture and has high efficiency.
  • the main body part 311 and the connecting part 313 are divided on the board main body 31, and the third groove section 3313 and the second groove section are opened on the board main body 31.
  • 332 weakening the strength of the portion between the connecting portion 313 and the main body portion 311 to make it easy to deform, so as to divide the deforming portion 312 between the main body portion 311 and the connecting portion 313 .
  • the sampling terminal 32 when the sampling terminal 32 is subjected to an external force, the external force is transmitted to the connecting portion 313, and the connecting portion 313 pulls the deforming portion 312, so that the deforming portion 312 is deformed, thereby allowing the sampling terminal 32 to move relative to the body portion 311, and preventing the sampling terminal 32 from being affected.
  • the sampling terminal 32 or the board main body 31 cannot be moved relative to the board main body 31 to cause damage.
  • the second groove 332 extends from the edge 34 to the second groove segment 3312 , and the second groove 332 is closer to the connecting portion 313 than the third groove segment 3313 .
  • FIG. 6 please refer to FIG. 6 .
  • the second groove 332 includes a fourth groove segment 3321 and a fifth groove segment 3322 connected in sequence, one end of the fourth groove segment 3321 runs through the edge 34, and the fifth groove segment 3322 and the third groove segment 3313 are arranged so as to be deformed.
  • Section 312 extends along a helical trajectory.
  • the board main body 31 includes a weak portion 35 connected to two opposite groove walls of the first groove segment 3311 . By using the weak portion 35 to connect two opposite groove walls of the first groove section 3311 , it is convenient to locate the connecting portion 313 and the sampling terminal 32 during assembly, so as to improve the connection accuracy of the connecting portion 313 and the sampling terminal 32 .

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  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本申请提供了一种柔性电路板组件、电池及用电装置，涉及电池领域。柔性电路板组件包括板主体及采样端子，采样端子用于采集目标件的电气数据。其中，板主体上设有槽部，槽部沿板主体的厚度方向贯穿板主体，以将板主体分割为本体部、连接部和变形部。连接部用于连接采样端子。变形部连接于本体部及连接部，变形部被配置为能够发生形变，以允许连接部相对本体部位移。通过沿着板主体的厚度方向开设贯穿板主体的槽部，在板主体上形成变形部及连接部，其中连接部可与采样端子连接，当采样端子受到外力作用时，变形部可以发生形变，从而允许采样端子相对于本体部活动，避免采样端子受外力作用时不能与板主体相对活动而导致采样端子或板主体损坏。

Description

柔性电路板组件、电池及用电装置
相关申请的交叉引用
本申请要求享有2022年01月27日提交的名称为“柔性电路板组件、电池及用电装置”的中国专利申请(申请号：202220231816.5)的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池领域，具体而言，涉及一种柔性电路板组件、电池及用电装置。
背景技术
电池在新能源领域应用甚广，例如电动汽车、新能源汽车等，新能源汽车、电动汽车已经成为汽车产业的发展新趋势。为了便于对电池进行管理，需要对电池中的每个电池单体进行电压及温度采集。现有技术中一般采用柔性电路板连接于各个电池单体，以实现对电池单体进行电压及温度采集。但是，在电池使用一段时间后，柔性电路板会与电池单体脱离，导致不能再对电池单体的电压及温度进行采集。
发明内容
本申请实施例的目的在于提供一种柔性电路板组件、电池及用电装置，其旨在改善相关技术中电池使用一段时间后，柔性电路板会与电池单体脱离的问题。
第一方面，本申请实施例提供了一种柔性电路板组件，所述柔性电路板组件包括板主体及采样端子，所述采样端子用于采集目标件的电气数据；其中，所述板主体上设有槽部，所述槽部沿所述板主体的厚度方向贯穿所述板主体，以将所述板主体分割为本体部、连接部和变形部，所述连接部用于连接所述采样端子，所述变形部连接于所述本体部及所述连接部，所述变形部被配置为能够发生形变，以允许所述连接部相对所述本体部位移。
在上述技术方案中，该柔性电路板组件通过沿着板主体的厚度方向开设贯穿板主体的槽部，在板主体上形成变形部及连接部，其中连接部可与采样端子连接，当采样端子受到外力作用时，变形部可以发生形变，从而允许采样端子相对于本体部活动，避免采样端子受外力作用时不能与板主体相对活动而导致采样端子或板主体损坏。当电池使用一段时间后，电池单体会发生膨胀位移，进而向采样端子施加外力，本申请实施例提供的柔性电路板组件的采样端子可跟随电池单体膨胀而移动，因此不会导致柔性电路板组件与电池单体分离，能够持续对电池单体的电压及温度进行采 集。该柔性电路板组件的本体部、连接部和变形部可通过冲压板主体的方式一次成型，制造简单方便，效率较高。
作为本申请实施例的一种可选技术方案，所述板主体具有边缘；所述槽部包括第一槽及第二槽，所述第一槽包括依次相连的第一槽段、第二槽段和第三槽段，所述第一槽段的一端贯穿所述边缘，第二槽段沿所述边缘的延伸方向延伸，所述第一槽段及所述第三槽段位于所述第二槽段的同侧；所述第二槽的一端贯穿所述边缘，所述板主体在所述第二槽与所述第三槽段之间的区域形成所述变形部。
在上述技术方案中，通过在板主体上开设第一槽段及第二槽段，从而在板主体上分割出本体部及连接部，在板主体上开设第三槽段及第二槽，将位于连接部及本体部之间的部分的强度削弱，使其易于变形，以在本体部及连接部之间分割出变形部。这样，当采样端子受到外力作用时，外力传导至连接部，连接部拉动变形部，使得变形部发生形变，进而允许采样端子相对于本体部活动，避免采样端子受外力作用时不能与板主体相对活动而导致采样端子或板主体损坏。
作为本申请实施例的一种可选技术方案，所述第二槽从所述边缘向靠近所述第二槽段的方向延伸，所述第三槽段从所述第二槽段向靠近所述边缘的方向延伸，在所述边缘的延伸方向上，所述第二槽位于所述第三槽段和所述第一槽段之间。
在上述技术方案中，第二槽从边缘向着第二槽段延伸，相比于第三槽段，第二槽更加靠近连接部。在将采样端子焊接于连接部时，第二槽可以减小热量向本体部传递，进而减小焊接时热量对本体部的影响。
作为本申请实施例的一种可选技术方案，所述第二槽包括依次相连的第四槽段和第五槽段，所述第四槽段的一端贯穿所述边缘，所述第五槽段与所述第三槽段相互卷绕布置，以使所述变形部沿螺旋轨迹延伸。
在上述技术方案中，通过使第三槽段与第五槽段互相卷绕，使得变形部沿螺旋轨迹延伸，沿着螺旋轨迹延伸的变形部较为容易发生形变，并且形变范围较大。
作为本申请实施例的一种可选技术方案，所述变形部的变形量允许所述连接部沿所述边缘的延伸方向位移超出所述第一槽段。
在上述技术方案中，通过使变形部的变形量允许连接部沿着边缘的延伸方向位移超出第一槽段，使得连接部相对于本体部具有足够的相对位移量，以适应电池单体的膨胀位移量。
作为本申请实施例的一种可选技术方案，所述板主体包括薄弱部，所述薄弱部连接于所述第一槽段的相对的两个槽壁。
在上述技术方案中，通过采用薄弱部连接第一槽段的相对的两个槽壁，便于装配时定位连接部及采样端子，以提升连接部及采样端子连接的准确性。
作为本申请实施例的一种可选技术方案，所述变形部包括第一卷绕段和第二卷绕段，所述第一卷绕段的一端与所述第二卷绕段的一端连接，所述第一卷绕段和所述第二卷绕段以其连接位置为卷绕中心同向卷绕；所述第一卷绕段的另一端与所述连接部连接，所述第二卷绕段的另一端与所述本体部连接。
在上述技术方案中，变形部通过第一卷绕段及第二卷绕段同向卷绕形成卷绕 结构，该卷绕结构较为容易发生形变，并且形变范围较大，能够适应电池单体的膨胀位移量。
作为本申请实施例的一种可选技术方案，所述变形部沿S形轨迹延伸。
在上述技术方案中，沿着S形轨迹延伸的变形部较为容易发生形变的同时还具有较好的强度。
作为本申请实施例的一种可选技术方案，所述变形部沿螺旋轨迹延伸。
在上述技术方案中，沿着螺旋轨迹延伸的变形部较为容易发生形变，并且形变范围较大。
第二方面，本申请实施例还提供了一种电池，所述电池包括多个电池单体、汇流件及上述的柔性电路板组件，汇流件用于串联或并联所述多个电池单体，所述采样端子连接于所述汇流件。
第三方面，本申请实施例还提供了一种用电装置，所述用电装置包括上述的电池，所述电池用于提供电能。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，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获得其他相关的附图。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池的爆炸图；
图3为本申请一些实施例提供的柔性电路板组件与汇流件的连接示意图；
图4为本申请一些实施例提供的柔性电路板组件的结构示意图；
图5为图4中A位置的放大图；
图6为本申请另一些实施例提供的柔性电路板组件的结构示意图。
图标：100-电池；10-箱体；11-第一部分；12-第二部分；20-电池单体；30-柔性电路板组件；31-板主体；311-本体部；312-变形部；3121-第一卷绕段；3122-第二卷绕段；313-连接部；32-采样端子；33-槽部；331-第一槽；3311-第一槽段；3312-第二槽段；3313-第三槽段；332-第二槽；3321-第四槽段；3322-第五槽段；34-边缘；35-薄弱部；40-汇流件；200-控制器；300-马达；1000-车辆。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例 的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，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，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，电池的应用越加广泛。电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
为了便于对电池进行管理，需要对电池中的每个电池单体进行电压及温度采集。现有技术中一般采用柔性电路板连接于各个电池单体，以实现对电池单体进行电压及温度采集。但是，在电池使用一段时间后，柔性电路板会与电池单体脱离，导致不能再对电池单体的电压及温度进行采集。
发明人经研究发现，电池单体在充放电过程中发生化学反应会使电池单体的 体积发生变化，导致柔性电路板和电池单体的连接部分产生相对应力。随着电池使用时间的增长，电池单体将会产生较大的膨胀位移，当膨胀到一定程度时，柔性电路板的采样连接处会出现撕裂、脱落等失效情况，导致不能再对电池单体的电压及温度进行采集。
基于以上考虑，发明人经过深入研究设计了一种柔性电路板组件，该柔性电路板组件通过沿着板主体的厚度方向开设贯穿板主体的槽部，在板主体上形成变形部及连接部，其中连接部可与采样端子连接，当采样端子受到外力作用时，变形部可以发生形变，从而允许采样端子相对于本体部活动，避免采样端子受外力作用时不能与板主体相对活动而导致采样端子或板主体损坏。
当电池使用一段时间后，电池单体会发生膨胀位移，进而向采样端子施加外力，本申请实施例提供的柔性电路板组件的采样端子可跟随电池单体膨胀而移动，因此不会导致柔性电路板组件与电池单体分离，能够持续对电池单体的电压及温度进行采集。
该柔性电路板组件的本体部、连接部和变形部可通过冲压板主体的方式一次成型，制造简单方便，效率较高。
本申请实施例公开的柔性电路板组件可以用于二次电池或一次电池；还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。可以使用具备本申请公开的柔性电路板的电池组成用电装置的电源系统，这样，有利于提升电池性能的稳定性和电池寿命。
本申请实施例提供一种使用电池作为电源的用电装置，用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。
车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2和图3，图2为本申请一些实施例提供的电池100的爆炸图。图3为本申请一些实施例提供的柔性电路板组件30与汇流件40的连接示意图。电池100 包括箱体10、电池单体20、柔性电路板组件30及汇流件40，电池单体20容纳于箱体10内。其中，箱体10用于为电池单体20提供容纳空间，箱体10可以采用多种结构。在一些实施例中，箱体10可以包括第一部分11和第二部分12，第一部分11与第二部分12相互盖合，第一部分11和第二部分12共同限定出用于容纳电池单体20的容纳空间。第二部分12可以为一端开口的空心结构，第一部分11可以为板状结构，第一部分11盖合于第二部分12的开口侧，以使第一部分11与第二部分12共同限定出容纳空间；第一部分11和第二部分12也可以是均为一侧开口的空心结构，第一部分11的开口侧盖合于第二部分12的开口侧。当然，第一部分11和第二部分12形成的箱体10可以是多种形状，比如，圆柱体、长方体等。
电池单体20是指组成电池100的最小单元。在电池100中，电池单体20可以是多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。多个电池单体20之间可直接串联或并联或混联在一起，再将多个电池单体20构成的整体容纳于箱体10内；当然，电池100也可以是多个电池单体20先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体10内。
其中，每个电池单体20可以为二次电池单体或一次电池单体；还可以是锂硫电池单体、钠离子电池单体或镁离子电池单体，但不局限于此。电池单体20可呈圆柱体、扁平体、长方体或其它形状等。
柔性电路板组件30是连接于电池单体20，并对电池单体20的电压、温度等电气数据进行采集的部件。汇流件40是用于实现多个电池单体20之间电连接的部件。根据本申请的一些实施例，柔性电路板组件30与汇流件40电连接，汇流件40与电池单体20电连接，也即柔性电路板组件30通过汇流件40与电池单体20电连接，或者说汇流件40电连接于柔性电路板组件30及电池单体20。
请参照图4，配合参照图5，图4为本申请一些实施例提供的柔性电路板组件30的结构示意图。图5为图4中A位置的放大图。根据本申请的一些实施例提供了一种柔性电路板组件30，柔性电路板组件30包括板主体31及采样端子32。采样端子32用于采集目标件的电气数据。其中，板主体31上设有槽部33，槽部33沿板主体31的厚度方向贯穿板主体31，以将板主体31分割为本体部311、连接部313和变形部312。连接部313用于连接采样端子32。变形部312连接于本体部311及连接部313，变形部312被配置为能够发生形变，以允许连接部313相对本体部311位移。
板主体31是柔性电路板组件30的主体部分，其能够对采样端子32采集的电气数据进行转移、汇总和/或处理等操作。
采样端子32是柔性电路板组件30中用于实现采集目标件电气数据的元件。电气数据包括但不限于目标件的温度、电压或电流等数据。
槽部33是沿着板主体31的厚度方向贯穿板主体31的凹槽。
本体部311是板主体31的主要结构，连接部313是板主体31上用于连接采样端子32的部分，变形部312是板主体31上位于本体部311和连接部313之间的部分。其中，变形部312能够发生形变，使得连接部313能够相对于本体部311位移。 变形部312和连接部313均与本体部311电连接，以使得采样端子32在与连接部313电连接时能够将采集的电气数据传输给本体部311。
该柔性电路板组件30通过沿着板主体31的厚度方向开设贯穿板主体31的槽部33，在板主体31上形成变形部312及连接部313，其中连接部313可与采样端子32连接，当采样端子32受到外力作用时，变形部312可以发生形变，从而允许采样端子32相对于本体部311活动，避免采样端子32受外力作用时不能与板主体31相对活动而导致采样端子32或板主体31损坏。
当电池100使用一段时间后，电池单体20会发生膨胀位移，进而向采样端子32施加外力，本申请实施例提供的柔性电路板组件30的采样端子32可跟随电池单体20膨胀而移动，因此不会导致柔性电路板组件30与电池单体20分离，能够持续对电池单体20的电压及温度进行采集。
该柔性电路板组件30的本体部311、连接部313和变形部312可通过冲压板主体31的方式一次成型，制造简单方便，效率较高。
根据本申请的一些实施例，连接部313上设置有焊盘，变形部312内置有导线，导线将焊盘与本体部311电连接。采样端子32焊接于焊盘，这样，采样端子32即可与本体部311电连接，以使得采样端子32采集的电气数据能够传输至本体部311。
根据本申请的一些实施例，板主体31具有边缘34。槽部33包括第一槽331及第二槽332。第一槽331包括依次相连的第一槽段3311、第二槽段3312和第三槽段3313，第一槽段3311的一端贯穿边缘34，第二槽段3312沿边缘34的延伸方向延伸，第一槽段3311及第三槽段3313位于第二槽段3312的同侧。第二槽332的一端贯穿边缘34，板主体31在第二槽332与第三槽段3313之间的区域形成变形部312。
边缘34是指板主体31的侧边部分。第二槽段3312是板主体31上与边缘34的延伸方向相同的凹槽。第一槽段3311是贯穿边缘34，并延伸至第二槽段3312的凹槽。第三槽段3313是从第二槽段3312向着边缘34靠近的凹槽。第一槽段3311、第二槽段3312及第三槽段3313依次连通。
第二槽332是贯穿边缘34的另一凹槽，第二槽332与第一槽331互相隔断，以在第二槽332和第三槽段3313之间形成变形部312。
通过在板主体31上开设第一槽段3311及第二槽段3312，从而在板主体31上分割出本体部311及连接部313，在板主体31上开设第三槽段3313及第二槽332，将位于连接部313及本体部311之间的部分的强度削弱，使其易于变形，以在本体部311及连接部313之间分割出变形部312。这样，当采样端子32受到外力作用时，外力传导至连接部313，连接部313拉动变形部312，使得变形部312发生形变，进而允许采样端子32相对于本体部311活动，避免采样端子32受外力作用时不能与板主体31相对活动而导致采样端子32或板主体31损坏。
根据本申请的一些实施例，第二槽332从边缘34向靠近第二槽段3312的方向延伸，第三槽段3313从第二槽段3312向靠近边缘34的方向延伸。在边缘34的延伸方向上，第二槽332位于第三槽段3313和第一槽段3311之间。
“第二槽332从边缘34向靠近第二槽段3312的方向延伸”可以是第二槽332沿着垂直于边缘34的延伸方向的方向从边缘34向着第二槽段3312延伸，也可以是第二槽332沿着与边缘34的延伸方向呈锐角的方向从边缘34向着第二槽段3312延伸，还可以是第二槽332沿着曲线轨迹从边缘34向着第二槽段3312延伸。
“第三槽段3313从第二槽段3312向靠近边缘34的方向延伸”可以是第三槽段3313沿着垂直于边缘34的延伸方向的方向从第二槽段3312向着边缘34延伸，也可以是第三槽段3313沿着与边缘34的延伸方向呈锐角的方向从第二槽段3312向着边缘34延伸，还可以是第三槽段3313沿着曲线轨迹从第二槽段3312向着边缘34延伸。
第二槽332从边缘34向着第二槽段3312延伸，相比于第三槽段3313，第二槽332更加靠近连接部313。在将采样端子32焊接于连接部313时，第二槽332可以减小热量向本体部311传递，进而减小焊接时热量对本体部311的影响。
根据本申请的另一些实施例，在边缘34的延伸方向上，第三槽段3313位于第二槽332和第一槽段3311之间。
根据本申请的一些实施例，第三槽段3313和第二槽332均为圆弧形的开口槽。通过将第三槽段3313和第二槽332设置为圆弧形开口槽，以提升变形部312的防撕裂性能。
请参照图6，图6为本申请另一些实施例提供的柔性电路板组件30的结构示意图。第二槽332包括依次相连的第四槽段3321和第五槽段3322，第四槽段3321的一端贯穿边缘34。第五槽段3322与第三槽段3313相互卷绕布置，以使变形部312沿螺旋轨迹延伸。
第四槽段3321是第二槽332中贯穿边缘34的部分。第五槽段3322是第二槽332中与第四槽段3321连通的部分。第五槽段3322和第三槽段3313可相互卷绕，使得变形部312呈现螺旋状。
通过使第三槽段3313与第五槽段3322互相卷绕，使得变形部312沿螺旋轨迹延伸，沿着螺旋轨迹延伸的变形部312较为容易发生形变，并且形变范围较大。
根据本申请的一些实施例，变形部312的变形量允许连接部313沿边缘34的延伸方向位移超出第一槽段3311。
“变形部312的变形量允许连接部313沿边缘34的延伸方向位移超出第一槽段3311”也即当变形部312的变形达到极限或最大时，连接部313在边缘34的延伸方向上超出于第一槽段3311。
通过使变形部312的变形量允许连接部313沿着边缘34的延伸方向位移超出第一槽段3311，使得连接部313能够相对于本体部311具有足够的相对位移量，以适应电池单体20的膨胀位移量。
根据本申请的一些实施例，板主体31包括薄弱部35，薄弱部35连接于第一槽段3311的相对的两个槽壁。
薄弱部35连接于第一槽段3311的相对的两个槽壁，也即薄弱部35连接于连接部313和本体部311。薄弱部35的强度较低，薄弱部35在受到外力作用时容易发 生断裂，使得连接部313能够在变形部312发生形变时相对于本体部311活动，进而允许采样端子32相对于本体部311活动，以适应电池单体20的膨胀位移。
通过采用薄弱部35连接第一槽段3311的相对的两个槽壁，便于装配时定位连接部313及采样端子32，以提升连接部313及采样端子32连接的准确性。
请参照图6，根据本申请的一些实施例，变形部312包括第一卷绕段3121和第二卷绕段3122，第一卷绕段3121的一端与第二卷绕段3122的一端连接。第一卷绕段3121和第二卷绕段3122以其连接位置为卷绕中心同向卷绕。第一卷绕段3121的另一端与连接部313连接，第二卷绕段3122的另一端与本体部311连接。
第一卷绕段3121和第二卷绕段3122均沿着螺旋轨迹延伸。第一卷绕段3121的两端分别连接于第二卷绕段3122和连接部313，第二卷绕段3122的两端分别连接于第一卷绕段3121和本体部311。
变形部312通过第一卷绕段3121及第二卷绕段3122同向卷绕形成卷绕结构，该卷绕结构较为容易发生形变，并且形变范围较大，能够适应电池单体20的膨胀位移量。
根据本申请的一些实施例，变形部312沿S形轨迹延伸。
“变形部312沿S形轨迹延伸”也可以理解为变形部312呈S形。
沿着S形轨迹延伸的变形部312较为容易发生形变的同时还具有较好的强度。
根据本申请的另一些实施例，变形部312沿螺旋轨迹延伸。
“变形部312沿螺旋轨迹延伸”也可以理解为变形部312呈螺旋形。
沿着螺旋轨迹延伸的变形部312较为容易发生形变，并且形变范围较大。
根据本申请的一些实施例，板主体31上设有多个槽部33。多个槽部33将板主体31分割为本体部311、多个连接部313和多个变形部312。连接部313与变形部312一一对应。变形部312连接于本体部311及连接部313。通过设置多个变形部312及多个连接部313，以便于设置多个采样端子32，连接多个电池单体20。
根据本申请的一些实施例，以本体部311的中间位置为基准，位于中间位置两侧的多个变形部312的变形方向均指向中间位置。
根据本申请的一些实施例还提供了一种电池100，电池100包括多个电池单体20、汇流件40及上述的柔性电路板组件30。汇流件40用于串联或并联多个电池单体20，采样端子32连接于汇流件40。
电池单体20是指组成电池100的最小单元。在电池100中，电池单体20可以是多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。多个电池单体20之间可直接串联或并联或混联在一起，再将多个电池单体20构成的整体容纳于箱体10内；当然，电池100也可以是多个电池单体20先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于箱体10内。其中，每个电池单体20可以为二次电池单体或一次电池单体；还可以是锂硫电池单体、钠离子电池单体或镁离子电池单体，但不局限于此。电池单体20可呈圆柱体、扁平体、长方体或其它形状等。
汇流件40是用于实现多个电池单体20之间电连接的部件。柔性电路板组件30与汇流件40电连接，汇流件40与电池单体20电连接，也即柔性电路板组件30通过汇流件40与电池单体20电连接，或者说汇流件40电连接于柔性电路板组件30及电池单体20。
该电池100通过设置上述的柔性电路板组件30，电池100使用一段时间，电池单体20发生膨胀，采样端子32可跟随电池单体20膨胀而移动，因此不会导致柔性电路板组件30与电池单体20分离，能够持续对电池单体20的电压及温度进行采集，使得该电池100具有较长的寿命及稳定性。
根据本申请的一些实施例还提供了一种用电装置，用电装置包括上述的电池100，电池100用于提供电能。
根据本申请的一些实施例，请参照图4和图5。
柔性电路板组件30包括板主体31及采样端子32，采样端子32用于采集目标件的电气数据。其中，板主体31上设有槽部33，槽部33沿板主体31的厚度方向贯穿板主体31，以将板主体31分割为本体部311、连接部313和变形部312。连接部313用于连接采样端子32。变形部312连接于本体部311及连接部313，变形部312被配置为能够发生形变，以允许连接部313能够相对本体部311位移。板主体31具有边缘34。槽部33包括第一槽331及第二槽332，第一槽331包括依次相连的第一槽段3311、第二槽段3312和第三槽段3313。第一槽段3311的一端贯穿边缘34，第二槽段3312沿边缘34的延伸方向延伸，第一槽段3311及第三槽段3313位于第二槽段3312的同侧。第二槽332的一端贯穿边缘34，板主体31在第二槽332与第三槽段3313之间的区域形成变形部312。第二槽332从边缘34向靠近第二槽段3312的方向延伸，第三槽段3313从第二槽段3312向靠近边缘34的方向延伸，在边缘34的延伸方向上，第二槽332位于第三槽段3313和第一槽段3311之间。
该柔性电路板组件30通过沿着板主体31的厚度方向开设贯穿板主体31的槽部33，在板主体31上形成变形部312及连接部313，其中连接部313可与采样端子32连接，当采样端子32受到外力作用时，变形部312可以发生形变，从而允许采样端子32相对于本体部311活动，避免采样端子32受外力作用时不能与板主体31相对活动而导致采样端子32或板主体31损坏。当电池100使用一段时间后，电池单体20会发生膨胀位移，进而向采样端子32施加外力，本申请实施例提供的柔性电路板组件30的采样端子32可跟随电池单体20膨胀而移动，因此不会导致柔性电路板组件30与电池单体20分离，能够持续对电池单体20的电压及温度进行采集。该柔性电路板组件30的本体部311、连接部313和变形部312可通过冲压板主体31的方式一次成型，制造简单方便，效率较高。通过在板主体31上开设第一槽段3311及第二槽段3312，从而在板主体31上分割出本体部311及连接部313，在板主体31上开设第三槽段3313及第二槽332，将位于连接部313及本体部311之间的部分的强度削弱，使其易于变形，以在本体部311及连接部313之间分割出变形部312。这样，当采样端子32受到外力作用时，外力传导至连接部313，连接部313拉动变形部312，使得变形部312发生形变，进而允许采样端子32相对于本体部311活动，避免采样端子32受外力作用 时不能与板主体31相对活动而导致采样端子32或板主体31损坏。第二槽332从边缘34向着第二槽段3312延伸，相比于第三槽段3313，第二槽332更加靠近连接部313。在将采样端子32焊接于连接部313时，第二槽332可以减小热量向本体部311传递，进而减小焊接时热量对本体部311的影响。
根据本申请的另一些实施例，请参照图6。
第二槽332包括依次相连的第四槽段3321和第五槽段3322，第四槽段3321的一端贯穿边缘34，第五槽段3322与第三槽段3313相互卷绕布置，以使变形部312沿螺旋轨迹延伸。通过使第三槽段3313与第五槽段3322互相卷绕，使得变形部312沿螺旋轨迹延伸，沿着螺旋轨迹延伸的变形部312较为容易发生形变，并且形变范围较大。板主体31包括薄弱部35，薄弱部35连接于第一槽段3311的相对的两个槽壁。通过采用薄弱部35连接第一槽段3311的相对的两个槽壁，便于装配时定位连接部313及采样端子32，以提升连接部313及采样端子32连接的准确性。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种柔性电路板组件，其中，包括：
    板主体；
    采样端子，用于采集目标件的电气数据；
    所述板主体上设有槽部，所述槽部沿所述板主体的厚度方向贯穿所述板主体，以将所述板主体分割为本体部、连接部和变形部，所述连接部用于连接所述采样端子，所述变形部连接于所述本体部及所述连接部，所述变形部被配置为能够发生形变，以允许所述连接部相对所述本体部位移。
  2. 根据权利要求1所述柔性电路板组件，其中，所述板主体具有边缘；
    所述槽部包括：
    第一槽，包括依次相连的第一槽段、第二槽段和第三槽段，所述第一槽段的一端贯穿所述边缘，第二槽段沿所述边缘的延伸方向延伸，所述第一槽段及所述第三槽段位于所述第二槽段的同侧；
    第二槽，所述第二槽的一端贯穿所述边缘，所述板主体在所述第二槽与所述第三槽段之间的区域形成所述变形部。
  3. 根据权利要求2所述柔性电路板组件，其中，所述第二槽从所述边缘向靠近所述第二槽段的方向延伸，所述第三槽段从所述第二槽段向靠近所述边缘的方向延伸，在所述边缘的延伸方向上，所述第二槽位于所述第三槽段和所述第一槽段之间。
  4. 根据权利要求2所述柔性电路板组件，其中，所述第二槽包括依次相连的第四槽段和第五槽段，所述第四槽段的一端贯穿所述边缘，所述第五槽段与所述第三槽段相互卷绕布置，以使所述变形部沿螺旋轨迹延伸。
  5. 根据权利要求2-4任一项所述柔性电路板组件，其中，所述变形部的变形量允许所述连接部沿所述边缘的延伸方向位移超出所述第一槽段。
  6. 根据权利要求2-5任一项所述柔性电路板组件，其中，所述板主体包括薄弱部，所述薄弱部连接于所述第一槽段的相对的两个槽壁。
  7. 根据权利要求1-6任一项所述柔性电路板组件，其中，所述变形部包括第一卷绕段和第二卷绕段，所述第一卷绕段的一端与所述第二卷绕段的一端连接，所述第一卷绕段和所述第二卷绕段以其连接位置为卷绕中心同向卷绕；
    所述第一卷绕段的另一端与所述连接部连接，所述第二卷绕段的另一端与所述本体部连接。
  8. 根据权利要求1-3任一项所述柔性电路板组件，其中，所述变形部沿S形轨迹延伸。
  9. 根据权利要求1、2或4所述柔性电路板组件，其中，所述变形部沿螺旋轨迹延伸。
  10. 一种电池，其中，包括：
    多个电池单体；
    汇流件，用于串联或并联所述多个电池单体；
    根据权利要求1-9任一项所述的柔性电路板组件，所述采样端子连接于所述汇流件。
  11. 一种用电装置，其中，包括根据权利要求10所述的电池，所述电池用于提供电能。
PCT/CN2023/071029 2022-01-27 2023-01-06 柔性电路板组件、电池及用电装置 WO2023142971A1 (zh)

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