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 PDFInfo
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- 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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Images
Classifications
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- H—ELECTRICITY
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- 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
-
- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- H01M50/531—Electrode connections inside a battery casing
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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
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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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
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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
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
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- H—ELECTRICITY
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- 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
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- H01M2200/103—Fuse
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
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- Secondary Cells (AREA)
Abstract
Description
Claims (15)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2021/122178 WO2023050310A1 (zh) | 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 |
KR1020237004727A KR20230048043A (ko) | 2021-09-30 | 2021-09-30 | 샘플링 부품, 배터리, 전기 장치, 샘플링 부품의 제조 방법 및 샘플링 방법 |
EP21952124.2A EP4187705A1 (en) | 2021-09-30 | 2021-09-30 | Sampling component, battery, electrical device, and sampling component fabrication and sampling method |
CN202180085590.0A CN116670914A (zh) | 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 |
JP2023509719A JP2023547009A (ja) | 2021-09-30 | 2021-09-30 | サンプリング部材、電池、電力消費装置、サンプリング部材製造及びサンプリング方法 |
US18/166,902 US20230184841A1 (en) | 2021-09-30 | 2023-02-09 | Sampling component, battery, electric apparatus, manufacturing method of sampling component, and sampling method |
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PCT/CN2021/122178 WO2023050310A1 (zh) | 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 |
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US18/166,902 Continuation US20230184841A1 (en) | 2021-09-30 | 2023-02-09 | Sampling component, battery, electric apparatus, manufacturing method of sampling component, and sampling method |
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US (1) | US20230184841A1 (zh) |
EP (1) | EP4187705A1 (zh) |
JP (1) | JP2023547009A (zh) |
KR (1) | KR20230048043A (zh) |
CN (1) | CN116670914A (zh) |
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Citations (5)
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JP2005135823A (ja) * | 2003-10-31 | 2005-05-26 | Fujikura Ltd | フラットハーネスの分岐構造及びその製造方法 |
CN204651430U (zh) * | 2015-06-02 | 2015-09-16 | 北京普莱德新能源电池科技有限公司 | 电池模组电压采集组件及具有该电压采集组件的电池模组 |
CN209947993U (zh) * | 2019-06-28 | 2020-01-14 | 东软睿驰汽车技术(沈阳)有限公司 | 一种电池包的电芯信息采集结构 |
CN111180937A (zh) * | 2019-12-27 | 2020-05-19 | 银隆新能源股份有限公司 | 采集线束、电池箱及采集线束的制作方法 |
CN211376864U (zh) * | 2019-12-27 | 2020-08-28 | 银隆新能源股份有限公司 | 采集结构及电池箱 |
-
2021
- 2021-09-30 EP EP21952124.2A patent/EP4187705A1/en active Pending
- 2021-09-30 KR KR1020237004727A patent/KR20230048043A/ko unknown
- 2021-09-30 CN CN202180085590.0A patent/CN116670914A/zh active Pending
- 2021-09-30 WO PCT/CN2021/122178 patent/WO2023050310A1/zh active Application Filing
- 2021-09-30 JP JP2023509719A patent/JP2023547009A/ja active Pending
-
2023
- 2023-02-09 US US18/166,902 patent/US20230184841A1/en active Pending
Patent Citations (5)
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JP2005135823A (ja) * | 2003-10-31 | 2005-05-26 | Fujikura Ltd | フラットハーネスの分岐構造及びその製造方法 |
CN204651430U (zh) * | 2015-06-02 | 2015-09-16 | 北京普莱德新能源电池科技有限公司 | 电池模组电压采集组件及具有该电压采集组件的电池模组 |
CN209947993U (zh) * | 2019-06-28 | 2020-01-14 | 东软睿驰汽车技术(沈阳)有限公司 | 一种电池包的电芯信息采集结构 |
CN111180937A (zh) * | 2019-12-27 | 2020-05-19 | 银隆新能源股份有限公司 | 采集线束、电池箱及采集线束的制作方法 |
CN211376864U (zh) * | 2019-12-27 | 2020-08-28 | 银隆新能源股份有限公司 | 采集结构及电池箱 |
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JP2023547009A (ja) | 2023-11-09 |
CN116670914A (zh) | 2023-08-29 |
KR20230048043A (ko) | 2023-04-10 |
US20230184841A1 (en) | 2023-06-15 |
EP4187705A1 (en) | 2023-05-31 |
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