WO2023050310A1 - 采样部件、电池、用电装置、采样部件制造及采样方法 - Google Patents

采样部件、电池、用电装置、采样部件制造及采样方法 Download PDF

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Publication number
WO2023050310A1
WO2023050310A1 PCT/CN2021/122178 CN2021122178W WO2023050310A1 WO 2023050310 A1 WO2023050310 A1 WO 2023050310A1 CN 2021122178 W CN2021122178 W CN 2021122178W WO 2023050310 A1 WO2023050310 A1 WO 2023050310A1
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WIPO (PCT)
Prior art keywords
main body
sampling
battery
overlapping
overlapping portion
Prior art date
Application number
PCT/CN2021/122178
Other languages
English (en)
French (fr)
Inventor
王冲
陈智明
郑陈铃
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP21952124.2A priority Critical patent/EP4187705A1/en
Priority to JP2023509719A priority patent/JP2023547009A/ja
Priority to CN202180085590.0A priority patent/CN116670914A/zh
Priority to PCT/CN2021/122178 priority patent/WO2023050310A1/zh
Priority to KR1020237004727A priority patent/KR20230048043A/ko
Priority to US18/166,902 priority patent/US20230184841A1/en
Publication of WO2023050310A1 publication Critical patent/WO2023050310A1/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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
    • G01R31/3832—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration without measurement of battery voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • 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
    • 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
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/51—Connection only in series
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/103—Fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 sampling component, battery, electrical device, sampling component manufacturing and sampling method.
  • the embodiment of the present application proposes a sampling component, battery, electrical device, manufacturing and sampling method of the sampling component to solve the problem of battery safety in the adoption process in the prior art.
  • An embodiment of the present application provides a sampling component, including: a main body and an overlapping portion; the main body is used to transmit sampling signals; one end of the overlapping portion is overlapped with the main body, and the other end of the overlapping portion is overlapped with the point to be sampled , used to collect sampling signals; and, the overlapping part is provided with a fuse structure, used for fuse protection of the main part.
  • the connection process between the sampling circuit and the point to be sampled is simplified, the structure is simple, and the maintenance is convenient and fast.
  • the fuse part on the overlapping part the fuse protection of the main part is realized. While connecting the point to be sampled and the main part through the overlap part, it can also play the role of fuse protection without setting
  • the additional fusing protection circuit has a simple structure and greatly saves the space inside the battery.
  • the main body includes a wire and an insulating layer, and the insulating layer is coated on the surface of the wire for isolating the wire; the wire is exposed on the insulating layer at a position corresponding to the point to be sampled, and one end of the overlapping portion is lapped on the wire of the nudity.
  • Openings are provided on the insulating layer of the main body at positions corresponding to the points to be sampled to form exposed places, so that the overlapping part and the main body can be electrically connected conveniently, and the structure is simple.
  • the main body includes a plurality of wires and a plurality of overlapping parts; each wire is respectively exposed on the insulating layer at a position corresponding to each to-be-sampled point; .
  • the main body can be used to sample a plurality of points to be sampled, the sampling efficiency is improved, and the structure is compact and the space is saved.
  • the overlapping portion vertically overlaps the main body portion. This way is beneficial to ensure the connection strength between the lap joint and the main body, and is also beneficial to the streamlined production and processing of the sampling components.
  • the overlapping portion includes a connection portion and a fuse portion; the connection portion is located at both ends of the fuse portion, and is used to connect the fuse portion to the main body and the point to be sampled respectively.
  • the fuse part includes a chip resistor or a resistance wire.
  • the method of chip resistors or resistance wires is simple in structure, easy to manufacture, and the production cost is relatively low.
  • the fuse portion includes an etched line. In this way, accidental breakage of the fuse part during battery use can be reduced.
  • the overlapping portion is a flexible flat wire
  • the wire cross-sectional area of the fuse portion is smaller than that of the connecting portion. Setting the fuse part by narrowing the flexible flat wire can make the overlapping part form a whole, and the structure is simpler.
  • the surface of the connection part and the fuse part is provided with a film.
  • the surface of the connection and the fusing part is coated with a film, which can increase the strength of the overlapping part and play a better role in protecting it.
  • connection part is arranged on the bare part of the wire by means of welding, crimping, riveting or bonding, so as to realize the diversification of connection methods.
  • Some embodiments of the present application also propose a battery, including a battery cell and the sampling component proposed in the above embodiments; the sampling component is connected to each battery cell through an overlapping portion, and is used for sampling the battery cell.
  • Some embodiments of the present application also provide an electric device, including the battery provided in the above embodiments, for providing electric energy.
  • Some embodiments of the present application also propose a method for manufacturing a sampling component, the method comprising:
  • the main part is used to transmit the sampling signal
  • the method further includes: exposing the position of the main body corresponding to the point to be sampled, and bonding one end of the overlapping portion to the exposed portion of the wire.
  • the sampling component produced by the above sampling component manufacturing method simplifies the connection process between the sampling point circuit and the sampling point, and has a simple structure; at the same time, by setting the fuse part on the lap joint, the fuse protection of the main part is realized.
  • the connection part connects the sampling point and the main body, and at the same time, it can also play the role of fuse protection. There is no need to set up an additional fuse protection circuit, and the structure is simple, which greatly saves the space inside the battery.
  • Some embodiments of the present application also propose a battery sampling method, which includes:
  • a main body is provided, the other end of the overlapping part is overlapped with the main body, and the sampling signal is transmitted to the control system through the main body;
  • a fusing structure is provided on the overlapping portion, and when a short circuit occurs in the main body, the main body is protected by fusing.
  • the battery sampling method proposed in the embodiment of the present application the battery can be sampled conveniently, the implementation method is simple and effective, and the structural complexity of the battery will not be increased.
  • Fig. 1 is a schematic diagram of the structure of commonly used sampling components
  • FIG. 2 is a schematic structural diagram of a vehicle provided in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a battery provided in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a sampling component provided in an embodiment of the present application.
  • Fig. 6 is a schematic diagram of the main body of the sampling component provided by the embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of an overlapping portion provided by an embodiment of the present application.
  • Fig. 8 is a structural schematic diagram of another overlapping portion provided by the embodiment of the present application.
  • Fig. 9 is a schematic diagram of the structure of the third overlapping part provided by the embodiment of the present application.
  • Fig. 10 is a flow chart of the sampling component manufacturing method provided by the embodiment of the present application.
  • FIG. 11 is a flow chart of the battery sampling method provided by the embodiment of the present application.
  • Vehicle 1000 battery 100, box body 10, upper box body 11, lower box body 12, controller 200, motor 300; battery cell 20, connector 210, sampling part 40, main body 410, exposed parts 411, 412, Wire 4111 , insulating layer 4112 , overlapping parts 420 , 430 , connecting part 421 , first connecting part 4211 , second connecting part 4212 , fuse part 422 .
  • connection In the description of this application, it should be noted that, unless otherwise clearly stipulated and limited, the terms “installation”, “connection”, “connection” and “attachment” should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediary, and it can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • Multiple appearing in this application refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two groups), and “multi-piece” refers to more than two (Includes two pieces).
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in the embodiments of the present application.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square square battery cells and pouch battery cells, which are not limited in this embodiment of the present application.
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind 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 power battery application fields, its market demand is also constantly expanding.
  • the inventor of the present application has noticed that during the charging and discharging process of the battery, the current will be too large. If the battery current is too high, it will cause a short circuit inside the battery or the temperature will be too high, which will cause spontaneous combustion or explosion. When the internal current of the battery is too large, the large current will also pass through the battery sampling circuit electrically connected to the battery cell.
  • the existing battery sampling signal is generally transmitted to the battery management system through a flexible flat cable (FFC), and the existing flexible flat cable generally includes an insulator and a number of conductors arranged in parallel in the insulator, and the conductors are of equal width. The area of the longitudinal section of each position of the strip is equal, so the resistance value of each position of the entire conductor is equal. When a large current passes through, this flexible flat cable does not have the function of fuse protection, which will directly cause damage to the battery management system.
  • FFC flexible flat cable
  • FIG. 1 it is a common sampling circuit structure diagram for monitoring the inside of the battery discovered by the inventors of the present application.
  • the sampling circuit is arranged inside the battery. After the folding process, it is directly connected to the battery cell, so as to realize the sampling of the input or output signal of the battery cell.
  • the applicant found that the method of connecting the sampling circuit and the battery cell by bending the circuit is complicated. Especially when bending, it is difficult to ensure the accuracy of the bending position, and there are also problems such as that the bending angle cannot be maintained.
  • a fuse circuit is usually provided directly on the flexible flat cable.
  • the fusing circuit automatically performs fusing protection.
  • the entire flexible flat cable needs to be scrapped, and all flexible flat circuits need to be replaced, resulting in complicated battery maintenance operations and high maintenance costs.
  • the embodiment of the present application proposes a sampling component, a sampling method, a manufacturing method of the sampling component, and a corresponding battery and electrical device using the sampling component, aiming to solve the above-mentioned problems existing in the prior art.
  • the embodiment of the present application integrates the sampling circuit and the fuse protection circuit, so that the sampling component has the functions of signal sampling and fuse protection at the same time.
  • the sampling circuit is connected to the battery cell by overlapping two parts, which eliminates the need to bend the flexible circuit to connect the battery cell, simplifies the circuit sampling process, and reduces maintenance The complexity of the battery improves the safety of the battery.
  • sampling component the sampling method, the manufacturing method of the sampling component and the corresponding battery using the sampling component disclosed in the embodiments of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited to.
  • a power supply system comprising the electrical device comprising the sampling component disclosed in the present application, a battery, etc. can be used, which is conducive to improving the safety of the battery.
  • 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 can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft can 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. 2 is a schematic structural diagram of a vehicle 1000 provided in an embodiment 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 to supply power to 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. 3 is an exploded view of the battery 100 provided by the embodiment of the present application.
  • the battery 100 includes a case 10 and battery cells 20 housed in the case 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 an upper box body 11 and a lower box body 12, the upper box body 11 and the lower box body 12 cover each other, and the upper box body 11 and the lower box body 12 jointly define an The accommodation space of the monomer 20.
  • the lower box body 12 can be a hollow structure with an open end, and the upper box body 11 can be a plate-shaped structure, and the upper box body 11 covers the opening side of the lower box body 12, so that the upper box body 11 and the lower box body 12 jointly define
  • the upper box body 11 and the lower box body 12 can also be hollow structures with one side opening, and the opening side of the upper box body 11 is covered with the opening side of the lower box body 12 .
  • the box body 10 formed by the upper box body 11 and the lower box body 12 may be in various shapes, such as a cylinder, a cuboid, and the like.
  • the battery 100 mentioned in the embodiment of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery 100 mentioned in this application may include a battery module or a battery pack or the like.
  • There may be multiple battery cells 20 and the multiple battery cells 20 may be connected in series or in parallel or mixed.
  • the mixed connection means that the multiple battery cells 20 are both 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, a plurality of battery cells 20 can also be connected in series first
  • a battery 100 in the form of a battery module is formed by being connected in parallel or in series, and a plurality of battery modules are connected in series, in parallel or in series to form a whole and accommodated in the case 10 .
  • the battery 100 may also include other structures, for example, the battery 100 may also include a bus component for realizing electrical connection between multiple battery cells 20 .
  • Each battery cell 20 may be a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery or a magnesium-ion battery, 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.
  • each battery cell 20 has a positive terminal and a negative terminal for outputting power to the outside.
  • the positive terminals of multiple battery cells 20 are connected through the connecting piece 210
  • the negative terminals of the multiple battery cells 20 are also connected through the connecting piece 210 to form different battery packs and realize the series or parallel connection of different battery cells.
  • each battery cell may be sampled, or the battery pack may be used as a unit. When sampling in units of battery packs, it is only necessary to connect sampling components to each battery pack for sampling.
  • the sampling component 40 includes: a main body part 410 and an overlapping part 420; the main body part 410 is used to transmit sampling signals; One end of the overlapping portion 420 is overlapped with the main body portion 410, and the other end of the overlapping portion 420 is overlapped with the point to be sampled for collecting sampling signals; and, the overlapping portion is provided with a fusing structure 422 for fusing the main portion 410 Protect.
  • the sampling component 40 is applied to the battery to sample the battery cells or battery packs in the battery.
  • the battery includes a plurality of battery cells 20, and the plurality of battery cells 20 are combined together through connectors 210 to form a As for the battery pack, each battery pack is a sampling point of the battery, and the sampling unit 40 is responsible for sampling each battery pack.
  • the sampling component 40 includes a main body portion 410 and a plurality of lap portions 420 .
  • the main body 410 is arranged on one end surface of each battery cell 20, usually at one end of the electrode terminal in the height direction of the battery cell, and penetrates the surfaces of a plurality of battery cells 20, so that the main body 410 can be connected with each battery to be sampled. group to connect.
  • the main body 410 can adopt a flexible flat cable, which is convenient for wiring inside the battery.
  • the main body 410 is used for transmitting sampling signals, and includes multiple cable lines, so that multiple overlapping parts 420 can be connected to simultaneously transmit sampling signals of multiple points to be sampled.
  • each overlapping portion 420 is electrically connected to the main body 410 , and the other end is electrically connected to the point to be sampled for collecting sampling signals.
  • the number of overlapping portions 420 is consistent with the number of points to be sampled, that is, the number of battery packs to be sampled.
  • the overlapping portion 420 is provided with a fusing structure 422 , and the fusing structure 422 is used for fuse protection of the main body portion 410 .
  • the fusing structure 422 is directly arranged with the overlapping part 420. While connecting the point to be sampled and the main body part 410 through the overlapping part 420, it can also play the role of fusing protection, and there is no need to set an additional fusing protection circuit.
  • the structure is simple, which greatly saves the space inside the battery.
  • only the fusing overlapping part 420 can be replaced without replacing the entire flexible flat circuit, which is convenient and quick to maintain and low in cost.
  • FIG. 5 it is a structural diagram of the sampling component 40 proposed in the embodiment of the present application.
  • the main body 410 is a strip-shaped flexible flat circuit, which is provided with an interface connected to the sampling control circuit; at the same time, the main body 410 is connected with The position corresponding to the sampling point is overlapped with an overlapping portion 420 , and the overlapping portion 420 can be electrically connected with the main body portion 410 by means of welding or the like.
  • the overlapping portion 420 can select a position overlapping with the main body portion 410 according to the position of the battery pack to be tested.
  • the overlapping portion 420 can be preset at the corresponding position of the main body 410 according to the position of the battery to be sampled, and be integrated with the main body 410; the overlapping portion 420 can also be arranged on the main body 410 of the battery When sampling the surface, according to the actual situation of the sampling point, then set the overlapping part.
  • the sampling component is divided into a main part and an overlapping part.
  • the overlapping part can be freely overlapped according to the position of the sampling point, which simplifies the connection process between the sampling circuit and the point to be sampled. Simple; at the same time, by setting the fuse part on the lap joint, the fuse protection of the main body is realized. While connecting the sampling point and the main body through the lap joint, it can also play the role of fuse protection. An additional fusing protection circuit needs to be set, the structure is simple, and the space inside the battery is greatly saved.
  • the main body 410 includes a wire 4111 and an insulating layer 4112, and the insulating layer 4112 covers the surface of the wire 4111 for isolating the wire; the wire 4111 is on the insulating layer 4112 and is to be The position corresponding to the sampling point is exposed, and one end of the overlapping part is overlapped with the exposed part 411 of the wire.
  • the main body 410 of the sampling component 40 is a flexible flat circuit, the main body 410 includes multiple wires 4111, and the surface of the wires 4111 is covered with an insulating layer 4112 to isolate the wires and avoid short circuits between the wires. 4111 can sample multiple sampling points at the same time.
  • FIG. 5 it can be seen that there are multiple overlapping portions 420 overlapping with the main body 410 , respectively overlapping at different positions of the main body 410 .
  • openings are provided on the insulating layer 4112 on the main body portion 410 at positions corresponding to the points to be sampled to form an exposed part 411, and the overlapping part 420 is in the exposed part.
  • 411 is connected to the lead wire of the main body part 410 , and is electrically connected to the lead wire of the main body part 410 and the overlapping part 420 by welding or other means.
  • the overlapping part 420 and the main body 410 can be electrically connected conveniently, and the structure is simple.
  • the main body 410 includes a plurality of wires 4111 and a plurality of overlapping parts 420, each wire 4111 is exposed on the insulating layer 4112 at a position corresponding to each point to be sampled, and one end of each overlapping part 420 is respectively overlapped In the exposed part 411 of each wire, for example, in FIG. 5 and FIG. 6 , the overlapping part 420 is overlapped on the exposed part 411 , and the overlapping part 430 is overlapped on the exposed part 412 .
  • the main body 410 includes multiple wires 4111 , which can simultaneously sample a plurality of points to be sampled, and respectively set bare places on the insulating layer 4112 corresponding to the points to be sampled.
  • the circuits for sampling each point to be sampled are separate circuits. Therefore, when each overlapping portion 420 samples a plurality of points to be sampled, different wires need to be connected respectively. Therefore, each exposed part 411 The setting positions of the devices need to be staggered from each other, so that no short circuit can occur. Connecting multiple overlapping parts 420 through one main body part 410 realizes simultaneous sampling of multiple points to be sampled and improves sampling efficiency.
  • the overlapping portion 420 vertically overlaps the main body portion 410 .
  • each overlapping part 420 is overlapped with the main body part 410, and the mode of its overlapping can be determined according to the positions of the points to be sampled and the positions of each exposed part 411 on the main body part 410, preferably, the overlapping Part 420 is vertically overlapped with the main body 410, that is, the lapped part 420 is 90 degrees to the main body 410, and lapped at a vertical angle, which is conducive to ensuring the connection strength between the lapped part 420 and the main body 410, and is also conducive to sampling. Streamlined production and processing of part 40.
  • the overlapping portion 420 includes a connecting portion 421 and a fuse portion 422, the connecting portion 421 includes a first connecting portion 4211 and a second connecting portion 4212, and the first connecting portion 4211 and the second connecting portion 4212 are respectively located at the fuse portion 422 The two ends are used to respectively connect the fuse part 422 with the main body part 410 and the point to be sampled.
  • the first connecting part 4211 and the second connecting part 4212 are respectively located at both ends of the fuse part 422, and the connecting part and the fuse part can be welded, crimped, riveted or bonded in various ways. One or any combination to form an integral structure.
  • the first connecting part 4211 and the second connecting part 4212 can be made of the same material or different materials.
  • the connecting part can be made of a flexible circuit or conductive material such as copper foil or aluminum foil.
  • the first connecting part 4211 is used to connect the point to be sampled, since the point to be sampled is usually a battery cell or a connector connecting a battery cell, so , in order to ensure the connection strength between the first connection part 4211 and the battery cell, the first connection part 4211 can be set as a circuit structure with a certain strength, such as nickel sheet, copper sheet, aluminum sheet or other composite materials;
  • the second connection The part 4212 is connected with the main part 410, and the main part 410 generally adopts a flexible circuit, so the second connecting part 4212 can also adopt the same flexible circuit as the main part 410, so that it can be better overlapped with the main part 410. Therefore, the connecting portion 421 can be freely selected according to actual circuit conditions.
  • connection between the point to be sampled and the main part can be conveniently realized, and the connection mode is flexible and changeable.
  • the fuse part 422 includes chip resistors or resistance wires. As shown in FIGS. 7 and 8 , in order to meet the requirements of different sampling circuits, the fuse 422 can take various forms, such as a resistance wire as shown in FIG. 7 , and a chip resistor as shown in FIG. 8 .
  • the method of chip resistors or resistance wires is simple in structure, easy to manufacture, and the production cost is relatively low.
  • the fuse portion 422 includes an etched line. Since the battery often shakes during use, in order to increase the strength of the overlapping portion 420 , it is possible to perform fusing protection by setting etching lines on the PCB circuit board or the FPC flexible board. In this way, accidental breakage of the fuse part during battery use can be reduced.
  • the overlapping portion 420 is a flexible flat wire, and the wire cross-sectional area of the fuse portion 420 is smaller than that of the connecting portion 421 .
  • the overlapping portion 420 shown in the embodiment of the present application may also use a flexible flat wire, which integrates the connecting portion 421 and the fuse portion 422 into one body, resulting in a more compact structure.
  • a certain position of the flexible flat wire can be narrowed to reduce the width of the wire in this part to form the fusing part 422 .
  • the fusing part Since the fusing part has a smaller width than other parts, when the current reaches a certain intensity, the narrowed part will be fused first, which has the effect of fusing protection. Setting the fuse part by narrowing the flexible flat wire can make the overlapping part form a whole, and the structure is simpler.
  • the surface of the connection part 421 and the fuse part 422 is provided with a film. Because the battery often shakes during use, the strength of the lap joint 420 becomes very important. If the lap joint 420 is not strong enough and breaks during shaking, the battery unit cannot provide power. In the embodiment of the present application, by coating the surface of the connection 421 and the fusing part 422 with a film, the strength of the overlapping part 420 can be increased to better protect it.
  • connection part 421 is disposed on the exposed part of the wire by welding, crimping, riveting or bonding.
  • the connection part can be made of nickel sheet, copper sheet, aluminum sheet or other composite materials.
  • the connection part can be welded, crimped, riveted or bonded. Connecting with the wires of the main body part 410 realizes the diversification of connection methods.
  • a battery which includes a battery cell 20 and any sampling component 40 mentioned in the above-mentioned embodiments.
  • a plurality of battery cells 20 pass through The connectors 210 are connected in series or in parallel.
  • the sampling component 40 is arranged on one side of the battery cell 20.
  • the sampling component 40 includes a main body 410 and an overlapping portion 420.
  • the overlapping portion 420 connects each sampling point to the main body 410. , which simplifies the connection process, and at the same time, the overlapping part 420 also has a fuse part, and when the current flowing through the battery cell is too large, the fuse protection is automatically performed.
  • an electric device is further provided, the electric device includes the battery proposed in the above embodiments, and the battery is used to provide electric energy for the electric device.
  • Electric devices can be but not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc.
  • 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.
  • the embodiment of the present application also proposes a method for manufacturing a sampling component.
  • the method is used to produce and manufacture the sampling component proposed in the above embodiments.
  • the manufacturing method is usually run on the production equipment of the sampling component.
  • the production equipment includes a or multiple parts are used to execute the manufacturing method, specifically, the sample part manufacturing method is shown in Figure 10, including:
  • Step 501 Provide a main body and an overlapping portion, the main body is used for transmitting sampling signals.
  • Step 502 Lap one end of the overlapping portion with the main body, and connect the other end of the overlapping portion with the point to be sampled for collecting sampling signals.
  • Step 503 The overlapping part is provided with a fusing structure for fusing protection of the main body.
  • the sampling component produced by the above sampling component manufacturing method simplifies the connection process between the sampling point circuit and the sampling point, and has a simple structure; at the same time, by setting the fuse part on the lap joint, the fuse protection of the main part is realized.
  • the connection part connects the sampling point and the main body, and at the same time, it can also play the role of fuse protection. There is no need to set up an additional fuse protection circuit, and the structure is simple, which greatly saves the space inside the battery.
  • the manufacturing method further includes exposing the position of the main body corresponding to the point to be sampled, and one end of the overlapping portion is overlapped on the exposed portion of the wire. Openings are provided on the main body at positions corresponding to the points to be sampled to form exposed areas, so that the overlapping parts can be electrically connected to the main body conveniently, and the structure is simple.
  • the present application also proposes a battery sampling method, by which the battery can be sampled conveniently without increasing the structural complexity of the battery. Specifically, as shown in FIG. 11 , the method includes:
  • Step 601 setting up an overlapping part, and connecting one end of the overlapping part with the battery to-be-sampled point for collecting sampling signals.
  • Step 602 Set up the main body, overlap the other end of the overlapping portion with the main body, and transmit the sampling signal to the control system through the main body.
  • Step 603 setting a fuse structure on the overlapping part, and performing fuse protection on the main part when a short circuit occurs in the main part.
  • the battery sampling method proposed in the embodiment of the present application the battery can be sampled conveniently, the implementation method is simple and effective, and the structural complexity of the battery will not be increased.

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Abstract

本申请提供了一种采样部件（40），包括：主体部（410）和搭接部（420），主体部（410）用于传输采样信号，搭接部（420）的一端与所述主体部（410）搭接，搭接部（420）的另一端与待采样点搭接，用于采集采样信号；并且，搭接部设置有熔断结构（422），用于对主体部进行熔断保护。

Description

采样部件、电池、用电装置、采样部件制造及采样方法 技术领域
本申请涉及电池领域，具体涉及一种采样部件、电池、用电装置、采样部件制造及采样方法。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
随着电池的广泛使用，其安全问题也越来越多，由于电池在使用过程中需要频繁的充电和放电，在充电和放电过程中非常容易发生自燃和爆炸等安全问题。本申请发明人在研究中发现如何有效的对电池内部的电流情况进行监控，并且能够在在电流过大时，及时进行保护成为防止电池发生安全问题的重要方式。
发明内容
本申请实施例提出了一种采样部件、电池、用电装置、采样部件制造及采样方法，用以解决现有技术中存在采用过程中的电池安全的问题。
本申请实施例提供一种采样部件，包括：主体部和搭接部；主体部用于传输采样信号；搭接部的一端与主体部搭接，搭接部的另一端与待采样点搭接，用于采集采样信号；并且，搭接部设置有熔断结构，用于对主体部进行熔断保护。
本申请实施例通过改变采样部件的结构，简化了采样电路与待采样点的连接工艺，结构简单，维护方便快捷。同时，通过在搭接部上设置熔断部，实现了对主体部的熔断保护，在通过搭接部将待采样点和主体部进行连接的同时，又能起到熔断保护的作用，不需要设置额外的熔断保护电路，结构简单，大大节省了电池内部的空间。
一些实施例中，主体部包括导线和绝缘层，绝缘层包覆在导线表面，用于将导线隔离；导线在绝缘层上与待采样点对应的位置裸露，搭接部的一端搭接在导线的裸露处。
通过在主体部的绝缘层上与各待采样点对应的位置设置开口形成裸露处，可以方便的将搭接部与主体部进行电连接，结构简单。
一些实施例中，主体部包括多根导线和多个搭接部；各导线分别在绝缘层上与各待采样点对应的位置裸露；各搭接部的一端分别搭接在各导线的裸露处。实现了通过主体部对多个待采样点进行采样，提高了采样效率，同时结构紧凑节省了空间。
一些实施例中，搭接部与主体部垂直搭接。通过这种方式有利于保证搭接部与主体部的连接强度，也有利于采样部件的流水化生产加工。
一些实施例中，搭接部包括连接部和熔断部；连接部位于熔断部的两端，用于将熔断部分别与主体部和待采样点连接。通过在熔断部两端分别设置连接部，能够方便实现待采样点和主体部的连接，连接方式灵活多变。
一些实施例中，熔断部包括贴片电阻或电阻丝。采用贴片电阻或者电阻丝的方式，结构简单，容易制造，而且，生产成本比较低。
一些实施例中，熔断部包括刻蚀线。通过这种方式可以减少熔断部在电池使用过程中发生意外断裂。
一些实施例中，搭接部为柔性扁平导线，熔断部的导线截面积小于连接部的导线截面积。通过将柔性扁平导线变窄的方式设置熔断部可以使搭接部形成一个整体，结构更加简单。
一些实施例中，连接部和熔断部表面设置有覆膜。本申请实施例通过在连接和熔断部的表面涂覆有覆膜，可以增加搭接部的强度，对其起到更好的保护作用。
一些实施例中，连接部通过焊接、压接、铆接或粘接方式设置在导线的裸露处，实现了连接方式的多样化。
本申请一些实施例还提出一种电池，包括电池单体和上述实施例中提出的采样部件；采样部件通过搭接部与各电池单体连接，用于对电池单体进行采样。
本申请一些实施例还提出一种用电装置，包括上述实施例中提出的电池，用于提供电能。
本申请一些实施例还提出一种采样部件的制造方法，方法包括：
提供主体部和搭接部，主体部用于传输采样信号；
将搭接部的一端与主体部搭接，将搭接部的另一端与待采样点搭接，用于采集采样信号；并且，将搭接部设置有熔断结构，用于对主体部进行熔断保护。
一些实施例中，方法还包括：将主体部与待采样点对应的位置裸露，搭接部的一端搭接在导线的裸露处。
通过上述采样部件制造方法生产出来的采样部件简化了采样点路与采样点的连接工艺，结构简单；同时，通过在搭接部上设置熔断部，实现了对主体部的熔断保护，在通过搭接部将待采样点和主体部进行连接的同时，又能起到熔断保护的作用，不需要设置额外的熔断保护电路，结构简单，大大节省了电池内部的空间。
本申请一些实施例还提出一种电池采样方法，方法包括：
设置搭接部，将搭接部的一端与电池待采样点搭接，用于采集采样信号；
设置主体部，将搭接部的另一端与主体部搭接，将采样信号通过主体部传输至控制系统；以及
在搭接部上设置熔断结构，当主体部发生短路时，对主体部进行熔断保护。
通过本申请实施例提出的电池采样方法，可以方便的对电池进行采样，实施方法简单有效，并且不会增加电池的结构复杂度。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为常用的采样部件结构示意图；
图2为本申请实施例提供的车辆的结构示意图；
图3为本申请实施例提供的电池的分解结构示意图；
图4为本申请实施例提供的一种电池结构示意图；
图5为本申请实施例提供的采样部件结构示意图；
图6为本申请实施例提供的采样部件主体部的示意图；
图7为本申请实施例提供的一种搭接部结构示意图；
图8为本申请实施例提供的另一种搭接部结构示意图；
图9为本申请实施例提供的第三种搭接部结构示意图；
图10为本申请实施例提供的采样部件制造方法流程图；
图11为本申请实施例提供的电池采样方法流程图。
车辆1000，电池100，箱体10，上箱体11，下箱体12，控制器200，马达300；电池单体20，连接件210，采样部件40，主体部410，裸露处411，412，导线4111，绝缘层4112，搭接部420，430，连接部421，第一连接部4211，第二连接部4212，熔断部422。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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地描述，显然，所描述的实施例是本申请一部分实施例，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。
除非另有定义，本申请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；本申请中在申请的说明书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。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“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，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；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。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中的具体含义。
本申请中术语“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，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请中出现的“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)。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
目前，随着技术的发展，动力电池的应用越来越广泛。动力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。随着动力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。
本申请发明人注意到，电池在充电和放电的过程中，会出现电流过大的情况，如果电池电流过大会导致电池内部短路或者温度过高，进而会引发自燃或者爆炸等情况发生。当电池内部电流过大时，大电流也会经过与电池单体电连接的电池采样电路。现有的电池采样信号一般经过柔性扁平电缆(FFC) 传输至电池管理系统，而现有的柔性扁平电缆一般都包括绝缘体以及若干平行设置于该绝缘体中的导电体，导电体呈等宽的长条形，其每个位置的纵截面的面积均相等，因此，整个导电体每个位置的电阻值是相等的。在大电流经过时，这种柔性扁平电缆不具备熔断保护的功能，会直接对电池管理系统造成损伤。
如图1所示为本申请发明人发现的常用的对电池内部进行监测的采样电路结构图，所述采样电路设置在电池内部，在各个采样点，通过采用将柔性扁平线路切割后，进行弯折处理后与电池单体直接连接，从而实现对电池单体的输入或者输出信号进行采样。本申请人发现采用弯折线路的方式将采样电路与电池单体连接，工艺比较复杂，特别是在弯折时，很难保证弯折定位的精度，也存在弯折的角度无法保持等问题。
本申请发明人还发现，为了实现对电池管理系统的控制设备的保护，一般都直接在柔性扁平线缆上设置熔断电路，当所述电池单体输入或者输出的电流值大于某个门限时，所述熔断电路自动进行熔断保护。目前的熔断保护方式，当熔断保护电路进行熔断保护后，整个柔性扁平线缆就需要报废，需要替换所有柔性扁平电路，导致电池维护操作复杂、维护成本很大。
基于上述考虑，本申请实施例提出了一种采样部件、采样方法、采样部件制造方法以及相应的采用该采样部件的电池和用电装置，旨在解决现有技术中存在的上述问题。本申请实施例一方面将采样电路和熔断保护电路进行集成，使所述采样部件同时具有信号采样和熔断保护的功能。同时，通过采用两个部分搭接的方式将采样电路与电池单体连接起来，取消了需要对柔性电路进行折弯才能实现电池单体的连接的方式，简化了电路采样的工艺，降低了维护电池的复杂度，提高了电池的安全性。
本申请实施例公开的采样部件、采样方法、采样部件制造方法以及相应的采用该采样部件的电池可以但不限用于车辆、船舶或飞行器等用电装置中。可以使用具备本申请公开的采样部件、电池等组成该用电装置的电源系统，这样，有利于提高电池的安全性。
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2，图2为本申请实施例提供的车辆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可以用于为车辆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3，图3为本申请实施例提供的电池100的爆炸图。电池100包括箱体10和电池单体20，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可以包括上箱体11和下箱体12，上箱体11与下箱体12相互盖合，上箱体11和下箱体12共同限定出用于容纳电池单体20的容纳空间。下箱体12可以为一端开口的空心结构，上箱体11可以为板状结构，上箱体11盖合于下箱体12的开口侧，以使上箱体11与下箱体12共同限定出容纳空间；上箱体11和下箱体12也可以是均为一侧开口的空心结构，上箱体11的开口侧盖合于下箱体12的开口侧。当然，上箱体11和下箱体12形成的箱体10可以是多种形状，比如，圆柱体、长方体等。
本申请实施例所提到的电池100是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池100可以包括电池模块或电池包等。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，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的电池100，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。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件，用于实现多个电池单体20之间的电连接。
每个电池单体20可以为锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池或镁离子电池，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。
如图4所示，在电池100内部，每个电池单体20具有正极端子和负极端子，用于向外输出电源。多个电池单体20的正极端子通过连接件210连接起来，多个电池单体20的负极端子也通过连接件210连接起来，组成不同的电池组，实现不同电池单体的串联或者并联。在对电池单体进行采样时，可以对每一个电池单体进行采样，也可以以电池组为单位进行采样。以电池组为单位进行采样时，只需要通过采样部件与每个电池组进行连接采样即可。
如图4和图5所示，为本申请实施例提出的一种采样部件40的应用示意图，采样部件40包括：主体部410和搭接部420；主体部410用于传输采样信号；搭接部420的一端与主体部410搭接，搭接部420的另一端与待采样点搭接，用于采集采样信号；并且，搭接部设置有熔断结构422，用于对主体部410进行熔断保护。
在图4中，采样部件40应用于电池中，对电池中的电池单体或者电池组进行采样，电池包括多个电池单体20，多个电池单体20通过连接件210组合在一起，形成电池组，每个电池组为该电池的一个采样点，采样部件40负责对各个电池组进行采样。
采样部件40包括主体部410和多个搭接部420。主体部410设置在各电池单体20的一端表面，通常设置于电池单体高度方向上的电极端子的一端，贯穿多个电池单体20的表面，以便于主体部410与待采样的各电池组进行连接。主体部410可以采用柔性扁平电缆，便于在电池内部进行布线。主体部410用于传输采样信号，包括多条电缆线路，这样可以连接多个搭接部420，对多个待采样点的采样信号同时进行传输。
各搭接部420一端与主体部410电连接，另一端与待采样点电连接，用于采集采样信号。搭接部420的数量与待采样点的数量一致，即与待采样的电池组的数量一致。通过将搭接部420和主体部410分开设置，可以方便的 将待采样点和采样部件40的主体部410相连接，不需要将主体部进行分割后，再进行弯折处理，连接非常方便，工艺简单。
同时，搭接部420设置有熔断结构422，熔断结构422用于对主体部410进行熔断保护。熔断结构422直接和搭接部420设置在一起，在通过搭接部420将待采样点和主体部410进行连接的同时，又能起到熔断保护的作用，不需要设置额外的熔断保护电路，结构简单，大大节省了电池内部的空间。并且，当有单个熔断结构422进行熔断保护后，可以仅更换熔断的搭接部420，而不必对整个柔性扁平线路进行更换，维护方便快捷、成本低。
如图5所示，为本申请实施例提出的采样部件40的结构图，主体部410为长条形的柔性扁平电路，设置有与采样控制电路连接的接口；同时，在主体部410上与待采样点对应的位置，搭接有搭接部420，搭接部420可以通过焊接等方式与主体部410进行电连接。搭接部420可以根据待测电池组的位置选择与主体部410进行搭接的位置。在实际使用过程中，搭接部420可以根据电池的待采样点的位置预先设置在主体部410的相应位置，与主体部410成为一体；搭接部420也可以在将主体部410设置在电池表面进行采样时，根据实际采样点的情况，再设置搭接部。
本申请实施例通过改变采样部件的结构，将采样部件分为主体部和搭接部，搭接部可以根据采样点的位置自由进行搭接，简化了采样电路与待采样点的连接工艺，结构简单；同时，通过在搭接部上设置熔断部，实现了对主体部的熔断保护，在通过搭接部将待采样点和主体部进行连接的同时，又能起到熔断保护的作用，不需要设置额外的熔断保护电路，结构简单，大大节省了电池内部的空间。
一些实施例中，如图5和图6所示，主体部410包括导线4111和绝缘层4112，绝缘层4112包覆在导线4111表面，用于将导线隔离；导线4111在绝缘层4112上与待采样点对应的位置裸露，搭接部的一端搭接在导线的裸露处411。
采样部件40的主体部410为柔性扁平电路，主体部410包含有多路导线4111，导线4111表面包覆有绝缘层4112，将各路导线进行隔离，避免导线之间短路，通过设置多路导线4111可以对多个采样点同时进行采样，在图5中，可以看到有多个搭接部420与主体部410相搭接，分别搭接在主体 部410的不同位置。为了实现搭接部420与主体部410的搭接，主体部410上在与各待采样点对应的位置上，在绝缘层4112上设置开口，形成裸露处411，搭接部420在该裸露处411与主体部410的导线连接，通过焊接或者其他方式将主体部410的导线与搭接部420电连接。
通过在主体部410的绝缘层4112上与各待采样点对应的位置设置开口形成裸露处411，可以方便的将搭接部420与主体部410进行电连接，结构简单。
一些实施例中，主体部410包括多根导线4111和多个搭接部420，各导线4111分别在绝缘层4112上与各待采样点对应的位置裸露，各搭接部420的一端分别搭接在各导线的裸露处411，比如在图5和图6中，搭接部420搭接在裸露处411，搭接部430搭接在裸露处412。
如图4和图5所示，主体部410包括多路导线4111，可以同时对多个待采样点进行采样，分别在绝缘层4112上与各待采样点对应的位置设置裸露处。需要注意的是，针对各个待采样点进行采样的电路都为单独的电路，因此，各搭接部420对多个待采样点进行采样时，需要分别连接不同的导线，因此，各裸露处411的设置位置需要相互错开，不能产生短路情况。通过一个主体部410连接多个搭接部420实现了对多个待采样点的同时采样，提高了采样效率。
一些实施例中，搭接部420与主体部410垂直搭接。如图5所示，各搭接部420与主体部410相搭接，其搭接的方式可以根据待采样点的位置和主体部410上各裸露处411的位置进行确定，优选的，搭接部420与主体部410垂直搭接，即搭接部420与主体部410成90度，以垂直的角度进行搭接，有利于保证搭接部420与主体部410的连接强度，也有利于采样部件40的流水化生产加工。
一些实施例中，搭接部420包括连接部421和熔断部422，连接部421包括第一连接部4211和第二连接部4212，第一连接部4211和第二连接部4212分别位于熔断部422的两端，用于将熔断部422分别与主体部410和待采样点连接。
如图7和图8所示，第一连接部4211和第二连接部4212分别位于熔断部422的两端，连接部和熔断部可以通过焊接、压接、铆接或者粘接等多种 方式的一种或者任意组合形成一个一体结构。第一连接部4211和第二连接部4212可以采用相同的材料制成，也可以采用不同的材料制成，通常连接部可以采用柔性电路，也可以采用铜箔或者铝箔等导电材料制成。当第一连接部4211和第二连接部4212采用不同材料制成时，第一连接部4211用于连接待采样点，由于待采样点通常为电池单体或者连接电池单体的连接件，因此，为了保证第一连接部4211与电池单体的连接强度，可以将第一连接部4211设置成具有一定强度的电路结构，比如镍片、铜片、铝片或其他复合材质等；第二连接部4212与主体部410连接，主体部410一般采用柔性电路，则第二连接部4212也可以采用与主体部410相同的柔性电路，从而能够更好的与主体部410相搭接。因此，连接部421可以根据实际电路情况进行自由选择。
通过在熔断部422两端分别设置连接部，能够方便实现待采样点和主体部的连接，连接方式灵活多变。
一些实施例中，熔断部422包括贴片电阻或电阻丝。如图7和图8所示，为了适应不同的采样电路需求，熔断部422可以采用多种形式，如图7所示为电阻丝，如图8所示为贴片电阻。采用贴片电阻或者电阻丝的方式，结构简单，容易制造，而且，生产成本比较低。
一些实施例中，熔断部422包括刻蚀线。由于电池在使用过程中经常发生晃动，为了增加搭接部420的强度，可以通过在PCB电路板或者FPC柔性板上设置刻蚀线的方式，进行熔断保护。通过这种方式可以减少熔断部在电池使用过程中发生意外断裂。
一些实施例中，如图9所示，搭接部420为柔性扁平导线，熔断部420的导线截面积小于连接部421的导线截面积。本申请实施例所示的搭接部420也可以采用柔性扁平导线，将连接部421和熔断部422融为一体，结构更加紧凑。为了实现熔断保护，本申请实施例可以将柔性扁平导线的某个位置变窄，减小该部分的导线的宽度，形成熔断部422。由于熔断部相对于其他部位而言，就有更小的宽度，因此，当电流达到一定的强度时，变窄部分会首先被熔断，起到了熔断保护的效果。通过将柔性扁平导线变窄的方式设置熔断部可以使搭接部形成一个整体，结构更加简单。
一些实施例中，连接部421和熔断部422表面设置有覆膜。由于电池在 使用过程中经常会发生晃动，因此，搭接部420的强度就变得非常重要，如果搭接部420强度不够，在晃动过程中发生断裂，则会造成电池单体无法提供电源。本申请实施例通过在连接421和熔断部422的表面涂覆有覆膜，可以增加搭接部420的强度，对其起到更好的保护作用。
一些实施例中，连接部421通过焊接、压接、铆接或粘接方式设置在导线的裸露处。连接部可以采用镍片、铜片、铝片或其他复合材质等材料制成，为了实现搭接部420与主体部410的连接，可以通过焊接、压接、铆接或者粘接等方式将连接部与主体部410的导线连接起来，实现了连接方式的多样化。
根据本申请提出的一些实施例，还提出了一种电池，电池包括电池单体20和上述实施例中提到的任意一种采样部件40，如图4所示，多个电池单体20通过连接件210串联或者并联在一起，采样部件40设置在电池单体20的一侧，采样部件40包括主体部410和搭接部420，搭接部420将各待采样点与主体部410连接起来，简化了连接工艺，同时，搭接部420还具有熔断部，当流经电池单体的电流过大时，则自动进行熔断保护。通过采用本申请实施例提出的采样部件，本申请实施例提出的电池结构更加紧凑，采样效果更好。
根据本申请提出的一些实施例，还提供一种用电装置，用电装置包括上述实施例中提出的电池，电池用于为用电装置提供电能。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。
一些实施例中，本申请实施例还提出一种采样部件的制造方法，方法用于生产和制造上述实施例中提出的采样部件，制造方法通常在采样部件的生产设备上运行，生产设备包括一个或多个部件用于执行制造方法，具体的，采样部件制造方法如图10所示，包括：
步骤501：提供主体部和搭接部，主体部用于传输采样信号。
步骤502：将搭接部的一端与主体部搭接，将搭接部的另一端与待采样点搭接，用于采集采样信号。
步骤503：将搭接部设置有熔断结构，用于对主体部进行熔断保护。
通过上述采样部件制造方法生产出来的采样部件简化了采样点路与采样点的连接工艺，结构简单；同时，通过在搭接部上设置熔断部，实现了对主体部的熔断保护，在通过搭接部将待采样点和主体部进行连接的同时，又能起到熔断保护的作用，不需要设置额外的熔断保护电路，结构简单，大大节省了电池内部的空间。
一些实施例中，制造方法进一步包括将主体部与待采样点对应的位置裸露，搭接部的一端搭接在导线的裸露处。通过在主体部上与各待采样点对应的位置设置开口形成裸露处，可以方便的搭接部与主体部进行电连接，结构简单。
一些实施例中，本申请还提出一种电池采样方法，通过该方法可以方便的对电池进行采样，并且不会增加电池的结构复杂度，具体的，如图11所示，方法包括：
步骤601：设置搭接部，将搭接部的一端与电池待采样点搭接，用于采集采样信号。
步骤602：设置主体部，将搭接部的另一端与主体部搭接，将采样信号通过主体部传输至控制系统。
步骤603：在搭接部上设置熔断结构，当主体部发生短路时，对主体部进行熔断保护。
通过本申请实施例提出的电池采样方法，可以方便的对电池进行采样，实施方法简单有效，并且不会增加电池的结构复杂度。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (15)

  1. 一种采样部件，其特征在于，包括：主体部和搭接部；
    所述主体部用于传输采样信号；
    所述搭接部的一端与所述主体部搭接，所述搭接部的另一端与待采样点搭接，用于采集采样信号；并且，所述搭接部设置有熔断结构，用于对所述主体部进行熔断保护。
  2. 如权利要求1所述的采样部件，其特征在于，所述主体部包括导线和绝缘层，所述绝缘层包覆在所述导线表面，用于将所述导线隔离；所述导线在所述绝缘层上与所述待采样点对应的位置裸露，所述搭接部的所述一端搭接在所述导线的裸露处。
  3. 如权利要求1或2所述的采样部件，其特征在于，所述主体部包括多根导线和多个搭接部；
    各所述导线分别在所述绝缘层上与各待采样点对应的位置裸露；
    各所述搭接部的所述一端分别搭接在各所述导线的裸露处。
  4. 如权利要求1-3任一项所述的采样部件，其特征在于，所述搭接部与所述主体部垂直搭接。
  5. 如权利要求1-4任一项所述的采样部件，其特征在于，所述搭接部包括连接部和熔断部；
    所述连接部位于所述熔断部的两端，用于将所述熔断部分别与所述主体部和待采样点连接。
  6. 如权利要求5所述的采样部件，其特征在于，所述熔断部包括贴片电阻或电阻丝。
  7. 如权利要求5所述的采样部件，其特征在于，所述熔断部包括刻蚀线。
  8. 如权利要求5所述的采样部件，其特征在于，所述搭接部为柔性扁平导线，所述熔断部的导线截面积小于所述连接部的导线截面积。
  9. 如权利要求5所述的采样部件，其特征在于，所述连接部和熔断部表面设置有覆膜。
  10. 如权利要求5所述的采样部件，其特征在于，所述连接部通过焊接、 压接、铆接或粘接方式设置在所述导线的裸露处。
  11. 一种电池，其特征在于，包括电池单体和如权利要求1-10任意一项所述的采样部件；
    所述采样部件通过搭接部与各所述电池单体连接，用于对电池单体进行采样。
  12. 一种用电装置，其特征在于，包括如权利要求11所述的电池，用于提供电能。
  13. 一种采样部件的制造方法，其特征在于，所述方法包括：
    提供主体部和搭接部，所述主体部用于传输采样信号；
    将所述搭接部的一端与所述主体部搭接，将所述搭接部的另一端与待采样点搭接，用于采集采样信号；并且，
    将所述搭接部设置有熔断结构，用于对所述主体部进行熔断保护。
  14. 如权利要求13所述的制造方法，其特征在于，将所述主体部与所述待采样点对应的位置裸露，所述搭接部的所述一端搭接在所述导线的裸露处。
  15. 一种电池采样方法，其特征在于，所述方法包括：
    设置搭接部，将所述搭接部的一端与电池待采样点搭接，用于采集采样信号；
    设置主体部，将所述搭接部的另一端与所述主体部搭接，将所述采样信号通过所述主体部传输至控制系统；以及
    在所述搭接部上设置熔断结构，当主体部发生短路时，对所述主体部进行熔断保护。
PCT/CN2021/122178 2021-09-30 2021-09-30 采样部件、电池、用电装置、采样部件制造及采样方法 WO2023050310A1 (zh)

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