WO2024020916A1 - 采样装置、电池和用电设备 - Google Patents

采样装置、电池和用电设备 Download PDF

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Publication number
WO2024020916A1
WO2024020916A1 PCT/CN2022/108476 CN2022108476W WO2024020916A1 WO 2024020916 A1 WO2024020916 A1 WO 2024020916A1 CN 2022108476 W CN2022108476 W CN 2022108476W WO 2024020916 A1 WO2024020916 A1 WO 2024020916A1
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WO
WIPO (PCT)
Prior art keywords
sampler
battery
battery cell
connector
sampling device
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Application number
PCT/CN2022/108476
Other languages
English (en)
French (fr)
Inventor
康海荣
何佳
王冲
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.)
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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 PCT/CN2022/108476 priority Critical patent/WO2024020916A1/zh
Publication of WO2024020916A1 publication Critical patent/WO2024020916A1/zh

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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]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • 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

Definitions

  • This application relates to the field of battery technology, and in particular to a sampling device, battery and electrical equipment.
  • This application provides a sampling device, battery and electrical equipment. It can accurately and effectively sample battery cells, monitor the working status of battery cells in real time, and deal with abnormal conditions of battery cells in a timely manner, thereby improving battery safety.
  • a sampling device including: a sampler, which is disposed on the outer surface of a battery cell and is used to sample the battery cell; and a connecting component, which is used to connect The sampler and the electrode terminals of the battery cells.
  • the sampling device includes a sampler and a connecting component.
  • the sampler is arranged on the outer surface of the battery cell, and the connecting component connects the sampler to the electrode terminal of the battery cell.
  • the sampler is arranged on the outer surface of the battery cell to sample a single battery cell, and the sampler is arranged on the outer surface of the battery cell.
  • it can reduce the connection distance of the connecting parts. Cost saving; on the other hand, the sampler is set on the outer surface of the battery cell, which reduces the wiring between the battery cell and the sampler, reduces the coupling interference between the lines, and can accurately obtain the working condition information of a single battery cell. , monitor the working status of battery cells in real time, and handle abnormal conditions of battery cells in a timely manner, thereby improving battery safety.
  • connection component includes a connector and a wire
  • the connector is connected to the sampler
  • the wire is connected to the connector and the electrode terminal.
  • the connector is used to realize the electrical connection between the wire and the sampler. Since the connection between the connector and the sampler is easier to operate and the connection is stronger, the reliability and stability of the electrical connection between the wire and the sampler are improved.
  • the connector includes a connecting portion, and the connecting portion is snap-connected with the first end of the wire.
  • the connecting part is clamped with the first end of the conductor to realize electrical connection between the connector and the conductor.
  • the connecting portion pierces the insulation layer of the first end of the conductor and is clipped with the conductor.
  • the connecting part is engaged with the wire by piercing the insulation layer of the wire to achieve electrical connection between the connector and the wire.
  • the connector includes a first pin
  • the sampler includes a second pin
  • the first pin is connected to the second pin
  • the first pin of the connector is connected to the second pin of the sampler to realize electrical connection between the connector and the sampler.
  • first pin and the second pin are welded together.
  • the first pin and the second pin are connected by welding, which is easy to operate and the connection is firm, ensuring the effectiveness of the electrical connection between the connector and the sampler.
  • the second end of the wire is welded to the electrode terminal.
  • the second end of the wire is connected to the electrode terminal by welding, which is easy to operate and the connection is firm, ensuring the effectiveness of the electrical connection between the wire and the electrode terminal.
  • the connector further includes a fixing post
  • the sampler further includes a fixing hole
  • the fixing post is plugged into the fixing hole to fix the connector to the sampler.
  • the fixing post of the connector is matched and plugged into the fixing hole of the sampler to fix the sampler and prevent the sampler from affecting the electrical connection between the sampler and the connector due to positional deviation and thus affecting the sampling accuracy.
  • the fixed column is a plastic column.
  • Plastic has the advantages of wear resistance and insulation.
  • the plastic column can ensure the stability of plugging into the fixed hole and is also insulated from the sampler to avoid affecting the accuracy of sampling.
  • the sampler is disposed on the outer surface of the end cap of the battery cell.
  • the end cover of the battery cell is separated from the casing of the battery cell, and the sampler is arranged on the outer surface of the end cover, which is easy to process and operate.
  • the projection of the connecting component on the plane where the outer surface of the end cover of the battery cell is located does not exceed the outer surface of the end cover of the battery cell.
  • the sampler is disposed between the two electrode terminals.
  • the sampler is placed between two electrode terminals, which can minimize the length of the wire and save costs.
  • the sampler is provided with a wireless communication module, and the wireless communication module is used to transmit sampling information of the battery cells.
  • the wireless communication module is used to transmit the sampling information of the battery cells, which has high flexibility, low power consumption, high stability and high reliability.
  • a battery including: a battery cell and a sampling device in the first aspect and any possible implementation of the first aspect.
  • an electrical device including: the battery in the second aspect and any possible implementation of the second aspect, where the battery is used to provide electrical energy to the electrical device.
  • the sampling device includes a sampler and a connecting component.
  • the sampler is arranged on the outer surface of the battery cell, and the connecting component connects the sampler to the electrode terminal of the battery cell.
  • the sampler is set on the outer surface of the battery cell to sample a single battery cell, and the sampler is set on the outer surface of the battery cell.
  • it can reduce the connection distance of the connecting parts and save costs; on the other hand, it can sample
  • the detector is set on the outer surface of the battery cell to reduce the wiring between the battery cell and the sampler and reduce the coupling interference between the lines. It can accurately obtain the working condition information of a single battery cell and monitor the battery cell in real time. working status, and handle abnormal conditions of battery cells in a timely manner, thereby improving battery safety.
  • Figure 1 is a schematic structural diagram of a vehicle disclosed in an embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a battery disclosed in an embodiment of the present application.
  • Figure 3 is a schematic structural diagram of a battery cell disclosed in an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a sampling device disclosed in an embodiment of the present application.
  • Figure 5 is an enlarged view of part A in Figure 4.
  • FIG. 6 is a front view of part B in FIG. 5 .
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • a battery refers to a physical module that includes one or more battery cells to provide electrical energy.
  • the battery mentioned in this application may include a battery module or a battery pack.
  • Batteries generally include a box for packaging one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
  • 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, etc., which are not limited in the embodiments of the present application.
  • a battery cell may also be called a cell.
  • the battery cell includes an electrode assembly and an electrolyte.
  • the electrode assembly consists of a positive electrode sheet, a negative electrode sheet and a separator. Battery cells mainly rely on the movement of metal ions between the positive and negative electrodes to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode current collector.
  • the current collector that is not coated with the positive electrode active material layer protrudes from the current collector that is coated with the positive electrode active material layer.
  • the current collector coated with the positive electrode active material layer serves as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganate, etc.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode current collector.
  • the current collector that is not coated with the negative electrode active material layer protrudes from the current collector that is coated with the negative electrode active material layer.
  • the current collector coated with the negative active material layer serves as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.
  • the material of the separator can be polypropylene (PP) or polyethylene (Polyethylene, PE).
  • the electrode assembly may have a rolled structure or a laminated structure, and the embodiments of the present application are not limited thereto.
  • multiple battery cells in the battery can be connected in series, parallel or mixed, where mixed means a mixture of series and parallel.
  • multiple battery cells can be connected in series, parallel or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel or mixed to form a battery.
  • multiple battery cells can directly form a battery, or they can first form a battery module, and then the battery module can form a battery.
  • the battery is further installed in the electrical equipment to provide electrical energy to the electrical equipment.
  • Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. . As the application fields of power batteries continue to expand, their market demand is also constantly expanding.
  • FPC and wire harness are connected to the electrode terminals of multiple battery cells to sample multiple battery cells. Since the electrode terminals of each battery cell need to be connected to the FPC and wiring harness, the wiring harnesses between multiple battery cells will be coupled and interfere with each other, affecting the accuracy of the sampling information.
  • the sampling device includes a sampler and a connecting component.
  • the sampler is disposed on the outer surface of the battery cell, and the connecting component connects the sampler to the electrode terminal of the battery cell.
  • the sampler is arranged on the outer surface of the battery cell to sample a single battery cell, and the sampler is arranged on the outer surface of the battery cell.
  • it can reduce the connection distance of the connecting parts.
  • Cost saving on the other hand, the sampler is set on the outer surface of the battery cell, which reduces the wiring between the battery cell and the sampler, reduces the coupling interference between the lines, and can accurately obtain the working condition information of a single battery cell. , monitor the working status of battery cells in real time, and handle abnormal conditions of battery cells in a timely manner, thereby improving battery safety.
  • sampling devices described in the embodiments of this application are applicable to various battery cells, batteries, and electrical equipment using batteries that are sampled using the sampling device.
  • Power-consuming devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.
  • spacecraft include aircraft, rockets, space shuttles, spaceships, etc.
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • Electric drills Electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, planers and more.
  • the following embodiments take the electrical equipment as a vehicle as an example.
  • FIG. 1 it is a schematic structural diagram of a vehicle 1 according to an embodiment of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle.
  • the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or a new energy vehicle. Extended range vehicles, etc.
  • a motor 40 , a controller 30 and a battery 10 may be disposed inside the vehicle 1 .
  • the controller 30 is used to control the battery 10 to provide power to the motor 40 .
  • the battery 10 may be disposed at the bottom, front or rear of the vehicle 1 .
  • the battery 10 can be used to supply power to the vehicle 1 .
  • the battery 10 can be used as an operating power source of the vehicle 1 and used in the circuit system of the vehicle 1 , for example, to meet the power requirements for starting, navigation, and operation of the vehicle 1 .
  • the battery 10 can not only be used as an operating power source of the vehicle 1 , but also can be used as a driving power source of the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .
  • Battery 10 may include a plurality of battery cells.
  • FIG. 2 it is a schematic structural diagram of a battery 10 according to an embodiment of the present application.
  • the battery 10 may include at least one battery module 200 .
  • the battery module 200 includes a plurality of battery cells 20 .
  • the battery 10 may also include a box 11.
  • the inside of the box 11 is a hollow structure, and a plurality of battery cells 20 are accommodated in the box 11.
  • the box 11 may include two parts, here respectively referred to as the first part 111 (upper box) and the second part 112 (lower box). The first part 111 and the second part 112 are fastened together.
  • the shapes of the first part 111 and the second part 112 may be determined according to the combined shape of the plurality of battery cells 20 , and at least one of the first part 111 and the second part 112 may have an opening.
  • both the first part 111 and the second part 112 may be hollow rectangular parallelepipeds and each has only one open surface.
  • the opening of the first part 111 and the opening of the second part 112 are arranged oppositely, and the openings of the first part 111 and the second part 112 are opposite to each other.
  • the second parts 112 are interlocked to form the box 11 with a closed chamber. For another example, different from what is shown in FIG.
  • first part 111 and the second part 112 may be a hollow rectangular parallelepiped with an opening, and the other may be plate-shaped to cover the opening.
  • the second part 112 is a hollow rectangular parallelepiped with only one open surface, and the first part 111 is plate-shaped. Then the first part 111 is covered at the opening of the second part 112 to form a box with a closed chamber. , the chamber can be used to accommodate multiple battery cells 20 .
  • a plurality of battery cells 20 are connected in parallel, in series or in mixed combination, and then placed in the box 11 formed by the fastening of the first part 111 and the second part 112.
  • the number of battery cells 20 can be set to any value. Multiple battery cells 20 can be connected in series, parallel or mixed connection to achieve larger capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, in order to facilitate installation, the battery cells 20 may be arranged in groups, and each group of battery cells 20 forms a battery module. The number of battery cells 20 included in the battery module is not limited and can be set according to requirements.
  • the battery may include multiple battery modules, which may be connected in series, parallel or mixed connection.
  • FIG. 3 it is a schematic structural diagram of a battery cell 20 according to an embodiment of the present application.
  • the battery cell 20 includes one or more electrode assemblies 22 , a casing 211 and an end cap 212 .
  • Housing 211 and end cap 212 form housing or battery case 21 .
  • the wall of the casing 211 and the end cover 212 are both called the wall of the battery cell 20 .
  • the wall of the casing 211 includes a bottom wall and four side walls.
  • the housing 211 is determined according to the combined shape of one or more electrode assemblies 22.
  • the housing 211 can be a hollow rectangular parallelepiped, a cube, or a cylinder, and one surface of the housing 211 has an opening to accommodate one or more electrodes.
  • Component 22 may be placed within housing 211 .
  • one of the planes of the housing 211 is an opening surface, that is, the plane does not have a wall so that the inside and outside of the housing 211 are connected.
  • the end surface of the housing 211 is an open surface, that is, the end surface does not have a wall so that the inside and outside of the housing 211 are connected.
  • the end cap 212 covers the opening and is connected to the housing 211 to form a closed cavity in which the electrode assembly 22 is placed.
  • the housing 211 is filled with electrolyte, such as electrolyte solution.
  • the battery cell 20 may further include two electrode terminals 214 , and the two electrode terminals 214 may be disposed on the end cap 212 .
  • the end cap 212 is generally in the shape of a flat plate, and two electrode terminals 214 are fixed on the flat surface of the end cap 212.
  • the two electrode terminals 214 are respectively a positive electrode terminal 214a and a negative electrode terminal 214b.
  • Each electrode terminal 214 is provided with a corresponding connecting member 23 , which may also be called a current collecting member 23 . It is located between the end cover 212 and the electrode assembly 22 and is used to electrically connect the electrode assembly 22 and the electrode terminal 214 .
  • each electrode assembly 22 has a first tab 221a and a second tab 222a.
  • the first tab 221a and the second tab 222a have opposite polarities.
  • the first tab 221a is a positive tab
  • the second tab 222a is a negative tab.
  • the first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal through one connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal through another connecting member 23.
  • the positive electrode terminal 214a is connected to the positive electrode tab through one connecting member 23, and the negative electrode terminal 214b is connected to the negative electrode tab through another connecting member 23.
  • the electrode assembly 22 can be provided as a single or multiple electrode components according to actual usage requirements. As shown in FIG. 3 , the battery cell 20 is provided with four independent electrode assemblies 22 .
  • a pressure relief mechanism 213 may also be provided on the battery cell 20 .
  • the pressure relief mechanism 213 is used to be activated to relieve the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.
  • the pressure relief mechanism 213 can be various possible pressure relief structures, which are not limited in the embodiments of the present application.
  • the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism configured to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold; and/or the pressure relief mechanism 213 may be a pressure-sensitive pressure relief mechanism configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.
  • FIG. 4 shows a sampling device 30 according to an embodiment of the present application.
  • the sampling device 30 includes a sampler 31 and a connecting component 32.
  • the sampler 31 is disposed on the outer surface of the battery cell 20 and is connected to the electrode terminal 214 of the battery cell 20 through the connecting member 32 to sample the battery cell 20 .
  • the sampler 31 samples the battery cells 20 and can obtain the voltage, current, temperature and other information of the battery cells 20 to monitor the working status of each battery cell 20 in real time.
  • the sampler 31 can be fixed to the outer surface of the battery cell 20 through welding, gluing or other connection methods, which is not limited in this application.
  • the sampler 31 is disposed on the outer surface of the battery cell 20 to sample a single battery cell 20, and the sampler 31 is disposed on the outer surface of the battery cell 20.
  • the connecting parts can be reduced. 32 connection distance, saving costs; on the other hand, reducing the wiring between the battery cell 20 and the sampler 31 reduces the coupling interference between the lines, and can accurately obtain the working condition information of a single battery cell 20 and monitor the battery in real time
  • the working status of the cell 20 can be used to handle abnormal conditions of the battery cell 20 in a timely manner, thereby improving the safety of the battery 10 .
  • the sampler 31 is provided on the outer surface of the end cover 212 of the battery cell 20 .
  • the end cover 212 of the battery cell 20 is generally separated from the casing 211 of the battery cell 20.
  • the sampler 31 is disposed on the outer surface of the end cover 212, which is easy to process and operate.
  • the electrode terminal 214 of the battery cell 20 is generally disposed on the end cover 212, and the sampler 31 is disposed on the outer surface of the end cover 212. This can reduce the distance between the sampler 31 and the electrode terminal 214 and reduce the number of connecting components. 32mm length, saving cost.
  • sampler 31 shown in FIG. 4 is disposed on the outer surface of the end cover 212 of the battery cell 20. It is only an exemplary schematic diagram of the present application and does not constitute a limitation of the present application. The sampler 31 can be changed according to the actual situation. disposed on any outer surface of the battery cell 20 .
  • the projection of the connecting component 32 on the plane where the outer surface of the end cover 212 of the battery cell 20 is located does not exceed the outer surface of the end cover 212 of the battery cell 20 . surface.
  • the sampler 31 is disposed between two electrode terminals 214 .
  • the sampler 31 is disposed between the two electrode terminals 214, which can minimize the length of the connecting component 32 and save costs.
  • sampler 31 shown in FIG. 4 is disposed between the two electrode terminals 214. This is only an exemplary schematic diagram of the present application and does not constitute a limitation of the present application. The sampler 31 can also be disposed at any electrode terminal 214. side.
  • the connecting component 32 includes a connector 321 and a wire 322 , the connector 321 is connected to the sampler 31 , and the wire 322 is connected to the connector 321 and the electrode terminal 214 .
  • the connector 321 refers to an electronic device with the function of transmitting signals and connecting current.
  • it may be an IDC connector, a Type-C connector, a USB connector, etc., which is not limited in this application.
  • the connector 321 is used to realize the electrical connection between the wire 322 and the sampler 31. Since the connection between the connector 321 and the sampler 31 is easier to operate and the connection is stronger, the reliability and reliability of the electrical connection between the wire 322 and the sampler 31 are improved. stability.
  • the connecting component 32 may only include a wire 322, and the wire 322 connects the sampler 31 and the electrode terminal 214.
  • the wire 322 and the sampler 31 may be connected by welding.
  • the connector 321 includes a first pin 3212
  • the sampler 31 includes a second pin 311
  • the first pin 3212 is connected to the second pin 311 .
  • the first pin 3212 of the connector 321 is connected to the second pin 311 of the sampler 31 to achieve electrical connection between the connector 321 and the sampler 31 .
  • the first pin 3212 and the second pin 311 are connected by welding.
  • the first pin 3212 and the second pin 311 are connected by welding, which is easy to operate and the connection is firm, ensuring the effectiveness of the electrical connection between the connector 321 and the sampler 31 .
  • the first pin 3212 and the second pin 311 are plug-connected.
  • the connector 321 and the sampler 31 are easily detachably connected.
  • the sampler 31 fails, the sampler 31 can be easily disassembled and replaced.
  • the connector 321 includes a connecting portion 3211 , and the connecting portion 3211 is snap-connected with the first end of the wire 322 .
  • the connecting portion 3211 is clamped with the first end of the wire 322 to realize the electrical connection between the connector 321 and the wire 322 .
  • the connecting portion 3211 penetrates the insulation layer of the first end of the conductor 322 and snaps with the conductor 322 .
  • the connecting portion 3211 is engaged with the wire 322 by piercing the insulation layer of the wire 322 to achieve electrical connection between the connector 321 and the wire 322 .
  • the second end of the wire 322 is welded to the electrode terminal 214 .
  • the second end of the wire 322 is connected to the electrode terminal 214 by welding, which is easy to operate and the connection is firm, ensuring the effectiveness of the electrical connection between the wire 322 and the electrode terminal 214 .
  • the connector 321 also includes a fixing post 3213
  • the sampler 31 also includes a fixing hole 312
  • the fixing post 3213 is inserted into the fixing hole 312 to fix the connector 321. to sampler 31.
  • the fixing post 3213 of the connector 321 is matched and plugged into the fixing hole 312 of the sampler 31 to achieve the fixation of the sampler 31 and prevent the positional deviation of the sampler 31 from affecting the electrical connection between the sampler 31 and the connector 321 and thus affecting the sampling. accuracy.
  • the fixing column 3213 is a plastic column.
  • Plastic has the advantages of wear resistance and insulation.
  • the plastic column can ensure the stability of plugging into the fixing hole 312 and is also insulated from the sampler 31 to avoid affecting the accuracy of sampling.
  • the fixing pillar 3213 can also be made of other materials that do not affect the performance of the battery cell 20 and the sampling accuracy, such as a composite material in which an insulating material coats a metal material, which is not limited in this application.
  • the fixing post 3213 of the connector 321 can also be fixed to the sampler 31 through welding, gluing, riveting or other connection methods to achieve fixation of the connector 321.
  • This application does not cover this issue. Make limitations.
  • the connector 321 may also be fixed on the outer surface of the battery cell 20 .
  • the connector 321 is fixed on the outer surface of the end cover 212 of the battery cell 20 .
  • the connector 321 can be fixed to the outer surface of the battery cell 20 through welding, gluing, riveting or other connection methods, which is not limited in this application.
  • the sampler 31 is provided with a wireless communication module, and the wireless communication module is used to transmit sampling information of the battery cells 20 .
  • the wireless communication module can transmit the sampling information of the battery cell 20 to the battery management system BMS.
  • the wireless communication module can use 3G/4G/5G/ETH and other wireless communication methods to transmit battery information to the battery management system BMS.
  • the wireless communication module is used to transmit the sampling information of the battery cell 20, which has high flexibility, low power consumption, high stability and high reliability.
  • the present application provides a sampling device 30 , which includes a sampler 31 and a connecting component 32 .
  • the sampler 31 is disposed on the outer surface of the battery cell 20 and is connected to the electrode terminal 214 of the battery cell 20 through the connecting component 32 to sample the battery cell 20 and transmit the obtained battery data through the wireless communication module of the sampler 31 Sampling information of cell 20.
  • the connection component 32 may include a connector 321 and a wire 322, the connector 321 is connected to the sampler 31, and the wire 322 is connected to the connector 321 and the electrode terminal 214.
  • the connecting portion 3211 of the connector 321 is snap-connected to the first end of the wire 322; the first pin 3212 of the connector 321 is connected to the second pin 311 of the sampler 31; the second end of the wire 322 is welded to the electrode terminal 214. ; Thus, the electrical connection between the electrode terminal 214 and the sampler 31 is realized, so that the sampler 31 samples the battery cell 20 .
  • An embodiment of the present application also provides a battery 10, including: a battery cell 20 and a sampling device 30 as described in any of the above embodiments.
  • An embodiment of the present application also provides an electrical device. Including the battery 10 in the above embodiment, the battery 10 is used to provide electric energy.
  • the electric device can be a vehicle 1, a ship or a spacecraft, but the embodiment of the present application is not limited to this.

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Abstract

本申请实施例提供一种采样装置、电池和用电设备。采样装置包括：采样器，采样器设置于电池单体的外表面，用于对电池单体进行采样；连接部件，连接部件用于连接采样器和电池单体的电极端子。本申请的技术方案，能够准确有效地对电池单体进行采样，实时监控电池单体的工作状态，以及时处理电池单体的异常状况，从而提高电池的安全性。

Description

采样装置、电池和用电设备 技术领域
本申请涉及电池技术领域，特别是涉及一种采样装置、电池和用电设备。
背景技术
节能减排是汽车产业可持续发展的关键。在这种情况下，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。而对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，除了提高电池的性能外，安全问题也是一个不可忽视的问题。如果电池的安全问题不能保证，那该电池就无法使用。因此，如何增强电池的安全性，是电池技术中一个亟待解决的技术问题。
发明内容
本申请提供了一种采样装置、电池和用电设备。能够准确有效地对电池单体进行采样，实时监控电池单体的工作状态，以及时处理电池单体的异常状况，从而提高电池的安全性。
第一方面，提供了一种采样装置，包括：采样器，所述采样器设置于电池单体的外表面，用于对所述电池单体进行采样；连接部件，所述连接部件用于连接所述采样器和所述电池单体的电极端子。
本申请实施例提供的采样装置包括采样器和连接部件，采样器设置于电池单体的外表面，连接部件连接采样器和电池单体的电极端子。本申请的技术方案中，采样器设置在电池单体的外表面上，对单个电池单体 进行采样，且采样器设置于电池单体的外表面，一方面可以减小连接部件的连接距离，节约成本；另一方面采样器设置在电池单体的外表面上，减少电池单体与采样器之间的走线，减少线路之间的耦合干扰，可以准确获取单个电池单体的工况信息，实时监控电池单体的工作状态，以及时处理电池单体的异常状况，从而提高电池的安全性。
在一种可能的实现方式中，所述连接部件包括连接器和导线，所述连接器连接所述采样器，所述导线连接所述连接器与所述电极端子。
利用连接器来实现导线与采样器的电连接，由于连接器与采样器的连接更易操作，连接更牢固，从而提高导线与采样器之间的电连接的可靠性和稳定性。
在一种可能的实现方式中，所述连接器包括连接部，所述连接部与所述导线的第一端卡接。连接部与导线的第一端卡接，以实现连接器与导线的电连接。
在一种可能的实现方式中，所述连接部刺穿所述导线的第一端的绝缘层与所述导线卡接。
连接部通过刺穿导线的绝缘层与导线卡接，以实现连接器与导线的电连接。
在一种可能的实现方式中，所述连接器包括第一引脚，所述采样器包括第二引脚，所述第一引脚与所述第二引脚连接。
连接器的第一引脚与采样器的第二引脚连接，以实现连接器与采样器的电连接。
在一种可能的实现方式中，所述第一引脚与所述第二引脚焊接连接。
第一引脚与第二引脚通过焊接的方式连接，易于操作，连接牢固，保证连接器与采样器电连接的有效性。
在一种可能的实现方式中，所述导线的第二端与所述电极端子焊接连接。
导线的第二端与电极端子通过焊接的方式连接，易于操作，连接牢固，保证导线与电极端子电连接的有效性。
在一种可能的实现方式中，所述连接器还包括固定柱，所述采样器还包括固定孔，所述固定柱插接于所述固定孔以使所述连接器固定于所述采样器。
连接器的固定柱与采样器的固定孔匹配插接，实现采样器的固定，避免采样器因位置偏移影响采样器与连接器之间的电连接而影响采样的准确性。
在一种可能的实现方式中，所述固定柱为塑胶柱。
塑胶具有耐磨，绝缘的优点，塑胶柱可以保证与固定孔插接的稳定性，还与采样器绝缘，避免影响采样的准确性。
在一种可能的实现方式中，所述采样器设置于所述电池单体的端盖的外表面。
电池单体的端盖分离于电池单体的壳体，将采样器设置于端盖的外表面，易于加工，便于操作。
在一种可能的实现方式中，所述连接部件在所述电池单体的端盖的外表面所在的平面上的投影不超出所述电池单体的端盖的外表面。
这样既可以减小连接部件中导线的长度，节约成本；又可以避免多个电池单体之间的连接部件的导线离得近而产生耦合干扰，避免影响采样的准确性。
在一种可能的实现方式中，所述采样器设置于两个所述电极端子之间。
采样器设置于两个电极端子之间，可以最大程度减小导线的长度， 节约成本。
在一种可能的实现方式中，所述采样器设置有无线通讯模块，所述无线通讯模块用于传输所述电池单体的采样信息。
利用无线通讯模块传输电池单体的采样信息，灵活性高，功耗低，稳定性高，可靠性高。
第二方面，提供了一种电池，包括：电池单体以及第一方面和第一方面的任意可能的实现方式中的采样装置。
第三方面，提供了一种用电设备，包括：第二方面和第二方面的任意可能的实现方式中的电池，所述电池用于为所述用电设备提供电能。
本申请的技术方案中，采样装置包括采样器和连接部件，采样器设置于电池单体的外表面，连接部件连接采样器和电池单体的电极端子。采样器设置在电池单体的外表面上，对单个电池单体进行采样，且采样器设置于电池单体的外表面，一方面可以减小连接部件的连接距离，节约成本；另一方面采样器设置在电池单体的外表面上，减少电池单体与采样器之间的走线，减少线路之间的耦合干扰，可以准确获取单个电池单体的工况信息，实时监控电池单体的工作状态，以及时处理电池单体的异常状况，从而提高电池的安全性。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1是本申请一实施例公开的一种车辆的结构示意图；
图2是本申请一实施例公开的一种电池的结构示意图；
图3是本申请一实施例公开的一种电池单体的结构示意图；
图4是本申请一实施例公开的一种采样装置的结构示意图；
图5是图4中A部分的放大图；
图6是图5中B部分的正视图。
在附图中，附图并未按照实际的比例绘制。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”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。对于本领域的普通技术人员而言，可视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。
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。
本申请中，电池是指包括一个或多个电池单体以提供电能的物理模块。例如，本申请中所提到的电池可以包括电池模块或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
可选地，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。在一些实施方式中，电池单体也可称之为电芯。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性 物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔膜的材质可以为聚丙烯(Polypropylene，PP)或聚乙烯(Polyethylene，PE)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
为了满足不同的电力需求，电池中的多个电池单体之间可以串联、并联或混联，其中混联是指串联和并联的混合。可选地，多个电池单体可以先串联、并联或混联组成电池模块，多个电池模块再串联、并联或混联组成电池。也就是说，多个电池单体可以直接组成电池，也可以先组成电池模块，电池模块再组成电池。电池再进一步设置于用电设备中，为用电设备提供电能。
目前，从市场形势的发展来看，动力电池的应用越加广泛。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。
电池技术的发展要同时考虑多方面的设计因素，不仅要考虑能量密度、循环寿命、放电容量、充放电倍率等性能参数，还要考虑电池的安全性。这就要求在电池的使用过程中，需要实时掌握电池的工作状况，以及时处理电池的异常状况，提高电池的安全性。
现有技术中，通过FPC和线束与多个电池单体的电极端子连接，对多个电池单体进行采样。由于每个电池单体的电极端子都需要与FPC和线束连接，多个电池单体之间的线束会发生耦合，互相干扰，影响采样信息的准确性。
鉴于此，本申请实施例提供了一种采样装置，该采样装置包括采样器和连接部件，采样器设置于电池单体的外表面，连接部件连接采样器和电池单体的电极端子。本申请的技术方案中，采样器设置在电池单体的外表面上，对单个电池单体进行采样，且采样器设置于电池单体的外表面，一方面可以减小连接部件的连接距离，节约成本；另一方面采样器设置在电池单体的外表面上，减少电池单体与采样器之间的走线，减少线路之间的耦合干扰，可以准确获取单个电池单体的工况信息，实时监控电池单体的工作状态，以及时处理电池单体的异常状况，从而提高电池的安全性。
本申请实施例描述的采样装置均适用于各种使用采样装置采样的电池单体、电池以及使用电池的用电设备。用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、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；航天器包括飞机、火箭、航天飞机和宇宙飞船等等；电动玩具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；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电设备不做特殊限制。
以下实施例为了方便说明，以用电设备为车辆为例进行说明。
例如，如图1所示，为本申请一个实施例的一种车辆1的结构示意图，车辆1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1的内部可以设置马达40，控制器30以及电池10，控制器30用来控制电池10为马达40的供电。例如，在车辆1的底部或车头或车尾可以设置电池10。电池10可以用于车辆1的供电，例如，电池10可以作为车辆1的操作电源，用于车辆1的电路系统，例如，用于车辆1的启动、导航和运行时的工作用电需求。在本申请的另一实施例中，电池10不仅仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，替代或部分地替代燃油或天然气为车辆1提供驱动动力。
电池10可以包括多个电池单体。例如，如图2所示，为本申请一个实施例的一种电池10的结构示意图，电池10可以包括至少一个电池模块200。电池模块200包括多个电池单体20。电池10还可以包括箱体11，箱体11内部为中空结构，多个电池单体20容纳于箱体11内。如图2所示，箱体11可以包括两部分，这里分别称为第一部分111(上箱体)和第二部分112(下箱体)，第一部分111和第二部分112扣合在一起。第一部分111和第二部分112的形状可以根据多个电池单体20组合的形状而定，第一部分111和第二部分112可以中至少一个具有一个开口。例如，如图2所示，第一部分111和第二部分112均可以为中空长方体且各自只有一个面为开口面，第一部分111的开口和第二部分112的开口相对设置，并且第一部分111和第二部分112相互扣合形成具有封闭腔室的箱体11。再例如，不同于图2所示，第一部分111和第二部分112中可以仅有一个为具有开口的中空长方体，而另一个为板状，以盖合开口。例如，这里以第二部分112为中空长方体且只有一个面为开口面，第一部分111为板状为例，那么第一部分111盖合在第二部分112的开口处以形成具有封闭腔室的箱体，该腔室可以用于容纳多个电池单体20。多个电池单体20相互并联、串联或混联组合后，置于第一部分111和第二部分112扣合后形成的箱体 11内。
根据不同的电力需求，电池单体20的数量可以设置为任意数值。多个电池单体20可通过串联、并联或混联的方式连接以实现较大的容量或功率。由于每个电池10中包括的电池单体20的数量可能较多，为了便于安装，可以将电池单体20分组设置，每组电池单体20组成电池模块。电池模块中包括的电池单体20的数量不限，可以根据需求设置。电池可以包括多个电池模块，这些电池模块可通过串联、并联或混联的方式进行连接。
如图3所示，为本申请一个实施例的一种电池单体20的结构示意图，电池单体20包括一个或多个电极组件22、壳体211和端盖212。壳体211和端盖212形成外壳或电池盒21。壳体211的壁以及端盖212均称为电池单体20的壁，其中对于长方体型电池单体20，壳体211的壁包括底壁和四个侧壁。壳体211根据一个或多个电极组件22组合后的形状而定，例如，壳体211可以为中空的长方体或正方体或圆柱体，且壳体211的其中一个面具有开口以便一个或多个电极组件22可以放置于壳体211内。例如，当壳体211为中空的长方体或正方体时，壳体211的其中一个平面为开口面，即该平面不具有壁体而使得壳体211内外相通。当壳体211可以为中空的圆柱体时，壳体211的端面为开口面，即该端面不具有壁体而使得壳体211内外相通。端盖212覆盖开口并且与壳体211连接，以形成放置电极组件22的封闭的腔体。壳体211内填充有电解质，例如电解液。
该电池单体20还可以包括两个电极端子214，两个电极端子214可以设置在端盖212上。端盖212通常是平板形状，两个电极端子214固定在端盖212的平板面上，两个电极端子214分别为正电极端子214a和负电极端子214b。每个电极端子214各对应设置一个连接构件23，或者也可以称为集流构件23，其位于端盖212与电极组件22之间，用于将电极组件22和电极端子214实现电连接。
如图3所示，每个电极组件22具有第一极耳221a和第二极耳222a。第一极耳221a和第二极耳222a的极性相反。例如，当第一极耳221a为正极极耳时，第二极耳222a为负极极耳。一个或多个电极组件22的第一极耳221a通过一个连接构件23与一个电极端子连接，一个或多个电极组件22的第二极耳222a通过另一个连接构件23与另一个电极端子连接。例如，正电极端子214a通过一个连接构件23与正极极耳连接，负电极端子214b通过另一个连接构件23与负极极耳连接。
在该电池单体20中，根据实际使用需求，电极组件22可设置为单个，或多个，如图3所示，电池单体20内设置有4个独立的电极组件22。
电池单体20上还可设置泄压机构213。泄压机构213用于电池单体20的内部压力或温度达到阈值时致动以泄放内部压力或温度。
泄压机构213可以为各种可能的泄压结构，本申请实施例对此并不限定。例如，泄压机构213可以为温敏泄压机构，温敏泄压机构被配置为在设有泄压机构213的电池单体20的内部温度达到阈值时能够熔化；和/或，泄压机构213可以为压敏泄压机构，压敏泄压机构被配置为在设有泄压机构213的电池单体20的内部气压达到阈值时能够破裂。
图4示出了本申请实施例的一种采样装置30，该采样装置30包括采样器31和连接部件32。采样器31设置于电池单体20的外表面，通过连接部件32与电池单体20的电极端子214连接，对电池单体20进行采样。
采样器31对电池单体20采样，可以获取电池单体20的电压、电流、温度等信息，以实时监控每个电池单体20的工作状态。可以通过焊接，胶粘等连接方式将采样器31固定于电池单体20的外表面，本申请对此不做限定。
本申请实施例中，采样器31设置在电池单体20的外表面上，对 单个电池单体20进行采样，且采样器31设置于电池单体20的外表面，一方面可以减小连接部件32的连接距离，节约成本；另一方面减少电池单体20与采样器31之间的走线，减少线路之间的耦合干扰，可以准确获取单个电池单体20的工况信息，实时监控电池单体20的工作状态，以及时处理电池单体20的异常状况，从而提高电池10的安全性。
可选地，在本申请实施例中，如图4所示，采样器31设置于电池单体20的端盖212的外表面。
电池单体20的端盖212一般分离于电池单体20的壳体211，将采样器31设置于端盖212的外表面，易于加工，便于操作。另外，电池单体20的电极端子214一般设置于端盖212上，将采样器31设置于端盖212的外表面，这样可以减少采样器31与电极端子214之间的距离，以减少连接部件32的长度，节约成本。
应理解，图4所示的采样器31设置于电池单体20的端盖212的外表面，仅是本申请一个示例性的示意图，不构成对本申请的限定，可以根据实际情况将采样器31设置于电池单体20的任意外表面。
可选地，在本申请实施例中，如图4所示，连接部件32在电池单体20的端盖212的外表面所在的平面上的投影不超出电池单体20的端盖212的外表面。
这样既可以减小连接部件32的长度，节约成本；又可以避免多个电池单体20之间的连接部件32离得近而产生耦合干扰，避免影响采样的准确性。
可选地，在本申请实施例中，如图4所示，采样器31设置于两个电极端子214之间。采样器31设置于两个电极端子214之间，可以最大程度减小连接部件32的长度，节约成本。
应理解，图4所示的采样器31设置于两个电极端子214之间，仅 是本申请一个示例性的示意图，不构成对本申请的限定，采样器31也可以设置于任一电极端子214的一侧。
可选地，在本申请实施例中，如图4所示，连接部件32包括连接器321和导线322，连接器321连接采样器31，导线322连接连接器321与电极端子214。
连接器321是指具有传输信号、接通电流功能的电子器件，例如，可以是IDC连接器、Type-C连接器、USB连接器等，本申请对此不做限定。
利用连接器321来实现导线322与采样器31的电连接，由于连接器321与采样器31的连接更易操作，连接更牢固，从而提高导线322与采样器31之间的电连接的可靠性和稳定性。
可选地，在本申请实施例中，连接部件32可仅包括导线322，导线322连接采样器31与电极端子214。导线322与采样器31可通过焊接连接的方式连接。
可选地，在本申请实施例中，如图5所示，连接器321包括第一引脚3212，采样器31包括第二引脚311，第一引脚3212与第二引脚311连接。
连接器321的第一引脚3212与采样器31的第二引脚311连接，以实现连接器321与采样器31的电连接。
可选地，在本申请实施例中，第一引脚3212与第二引脚311焊接连接。
第一引脚3212与第二引脚311通过焊接的方式连接，易于操作，连接牢固，保证连接器321与采样器31电连接的有效性。
可选地，在本申请实施例中，第一引脚3212与第二引脚311插接连接。当第一引脚3212与第二引脚311采用插接连接的方式，连接器321 与采样器31易于拆除连接，当采样器31发生故障时，可轻松拆卸采样器31，进行更换。
可选地，在本申请实施例中，如图6所示，连接器321包括连接部3211，连接部3211与导线322的第一端卡接。连接部3211与导线322的第一端卡接，以实现连接器321与导线322的电连接。
可选地，在本申请实施例中，连接部3211刺穿导线322的第一端的绝缘层与导线322卡接。
连接部3211通过刺穿导线322的绝缘层与导线322卡接，以实现连接器321与导线322的电连接。
可选地，在本申请实施例中，导线322的第二端与电极端子214焊接连接。
导线322的第二端与电极端子214通过焊接的方式连接，易于操作，连接牢固，保证导线322与电极端子214电连接的有效性。
可选地，在本申请实施例中，如图6所示，连接器321还包括固定柱3213，采样器31还包括固定孔312，固定柱3213插接于固定孔312以使连接器321固定于采样器31。
连接器321的固定柱3213与采样器31的固定孔312匹配插接，实现采样器31的固定，避免采样器31因位置偏移影响采样器31与连接器321之间的电连接而影响采样的准确性。
可选地，在本申请实施例中，固定柱3213为塑胶柱。
塑胶具有耐磨，绝缘的优点，塑胶柱可以保证与固定孔312插接的稳定性，还与采样器31绝缘，避免影响采样的准确性。
应理解，固定柱3213还可以采用其他不影响电池单体20性能以及采样准确性的材料，比如，绝缘材料包覆金属材料的复合材料，本申请对此不做限定。
可选地，在本申请实施例中，也可以通过焊接，胶粘，铆接等连接方式将连接器321的固定柱3213固定于采样器31，以实现连接器321的固定，本申请对此不做限定。
可选地，在本申请实施例中，连接器321也可固定于电池单体20的外表面。比如，当采样器31设置于电池单体20的端盖212的外表面时，连接器321固定于电池单体20的端盖212的外表面。可以通过焊接，胶粘，铆接等连接方式将连接器321固定于电池单体20的外表面，本申请对此不做限定。
可选地，在本申请实施例中，采样器31设置有无线通讯模块，无线通讯模块用于传输电池单体20的采样信息。
具体地，无线通讯模块可将电池单体20的采样信息传输至电池管理系统BMS。无线通讯模块可利用3G/4G/5G/ETH等无线通讯方式向电池管理系统BMS传输电池信息。
利用无线通讯模块传输电池单体20的采样信息，灵活性高，功耗低，稳定性高，可靠性高。
根据本申请的一些实施例，参见图4、图5和图6，本申请提供了一种采样装置30，该采样装置30包括采样器31和连接部件32。采样器31设置于电池单体20的外表面，通过连接部件32与电池单体20的电极端子214连接，对电池单体20进行采样，并通过采样器31的无线通讯模块传输获取到的电池单体20的采样信息。具体地，连接部件32可以包括连接器321与导线322，连接器321连接采样器31，导线322连接连接器321与电极端子214。连接器321的连接部3211与导线322的第一端卡接；连接器321的第一引脚3212与采样器31的第二引脚311连接；导线322的第二端与电极端子214焊接连接；从而实现电极端子214与采样器31的电连接，以使采样器31对电池单体20进行采样。
本申请实施例还提供了一种电池10，包括：电池单体20和如以上任一实施例所述的采样装置30。
本申请实施例还提供了一种用电设备。包括上述实施例中的电池10，电池10用于提供电能，可选地，该用电设备可以为车辆1、船舶或航天器等，但本申请实施例对此并不限定。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (15)

  1. 一种采样装置(30)，其特征在于，包括：
    采样器(31)，所述采样器(31)设置于电池单体(20)的外表面，用于对所述电池单体(20)进行采样；
    连接部件(32)，所述连接部件(32)用于连接所述采样器(31)和所述电池单体(20)的电极端子(214)。
  2. 根据权利要求1所述的采样装置(30)，其特征在于，所述连接部件(32)包括连接器(321)和导线(322)，所述连接器(321)连接所述采样器(31)，所述导线(322)连接所述连接器(321)与所述电极端子(214)。
  3. 根据权利要求2所述的采样装置(30)，其特征在于，所述连接器(321)包括连接部(3211)，所述连接部(3211)与所述导线(322)的第一端卡接。
  4. 根据权利要求3所述的采样装置(30)，其特征在于，所述连接部(3211)刺穿所述导线(322)的第一端的绝缘层与所述导线(322)卡接。
  5. 根据权利要求2至4中任一项所述的采样装置(30)，其特征在于，所述连接器(321)包括第一引脚(3212)，所述采样器(31)包括第二引脚(311)，所述第一引脚(3212)与所述第二引脚(311)连接。
  6. 根据权利要求5所述的采样装置(30)，其特征在于，所述第一引脚(3212)与所述第二引脚(311)焊接连接。
  7. 根据权利要求2至6中任一项所述的采样装置(30)，其特征在于，所述导线(322)的第二端与所述电极端子(214)焊接连接。
  8. 根据权利要求2至7中任一项所述的采样装置(30)，其特征在于，所述连接器(321)还包括固定柱(3213)，所述采样器(31)还包括固 定孔(312)，所述固定柱(3213)插接于所述固定孔(312)以使所述连接器(321)固定于所述采样器(31)。
  9. 根据权利要求8所述的采样装置(30)，其特征在于，所述固定柱(3213)为塑胶柱。
  10. 根据权利要求1至9中任一项所述的采样装置(30)，其特征在于，所述采样器(31)设置于所述电池单体(20)的端盖(212)的外表面。
  11. 根据权利要求10所述的采样装置(30)，其特征在于，所述连接部件(32)在所述电池单体(20)的端盖(212)的外表面所在的平面上的投影不超出所述电池单体(20)的端盖(212)的外表面。
  12. 根据权利要求1至11中任一项所述的采样装置(30)，其特征在于，所述采样器(31)设置于两个所述电极端子(214)之间。
  13. 根据权利要求1至12中任一项所述的采样装置(30)，其特征在于，所述采样器(31)设置有无线通讯模块，所述无线通讯模块用于传输所述电池单体(20)的采样信息。
  14. 一种电池(10)，其特征在于，包括：
    电池单体(20)；和
    根据权利要求1至13中任一项所述的采样装置(30)。
  15. 一种用电设备，其特征在于，包括：根据权利要求14所述的电池(10)，所述电池(10)用于提供电能。
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CN215116666U (zh) * 2021-06-23 2021-12-10 赫芝特电气技术（广州）有限公司 分布式铅酸蓄电池内阻监测系统
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