WO2021135475A1 - 采样组件、电池模块、电池组及装置 - Google Patents

采样组件、电池模块、电池组及装置 Download PDF

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Publication number
WO2021135475A1
WO2021135475A1 PCT/CN2020/119086 CN2020119086W WO2021135475A1 WO 2021135475 A1 WO2021135475 A1 WO 2021135475A1 CN 2020119086 W CN2020119086 W CN 2020119086W WO 2021135475 A1 WO2021135475 A1 WO 2021135475A1
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WO
WIPO (PCT)
Prior art keywords
section
battery module
circuit board
battery
sampling
Prior art date
Application number
PCT/CN2020/119086
Other languages
English (en)
French (fr)
Inventor
李龙
曹华
陈振星
钱木
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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 JP2022534362A priority Critical patent/JP7414998B2/ja
Priority to EP20908476.3A priority patent/EP3930090A4/en
Priority to KR1020227019266A priority patent/KR20220098765A/ko
Priority to US17/614,368 priority patent/US20220223930A1/en
Publication of WO2021135475A1 publication Critical patent/WO2021135475A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • 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
    • 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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application relates to the technical field of energy storage devices, in particular to a sampling assembly, a battery module, a battery pack and a device.
  • the battery module includes battery cells.
  • the electrode leads of adjacent battery cells are connected by connecting pieces. Heat is generated during the operation of the battery cells. The accumulation of heat causes the temperature of the battery module to rise. In order to make the battery module have a higher efficiency, it is necessary to Try to control the temperature of the battery module within the above-mentioned normal operating temperature range.
  • the battery module collects the voltage of the connecting piece through FPC (Flexible Printed Circuit, FPC) to obtain the temperature of the battery cell during operation.
  • FPC Flexible Printed Circuit
  • the present application provides a sampling component, a battery module, a battery pack, and a device.
  • the sampling component has high collection accuracy and reliability for battery cells.
  • sampling component includes:
  • a circuit board comprising a signal acquisition part and an insulating film connected to the signal acquisition part;
  • a connecting part includes a body part and a connecting part, the body part is connected to the connecting part, and the connecting part is electrically connected to the signal collecting part;
  • the connecting portion includes a first connecting section and a second connecting section, and the first connecting section is connected to the second connecting section;
  • At least part of the signal collection part is located between the first connection section and the second connection section.
  • the signal collection part is provided with a second through hole, and the first connection section passes through the second through hole, so that at least part of the signal collection part is located in the first connection section. And the second connecting section.
  • the insulating film is provided with a first through hole, and at least part of the connecting portion passes through the first through hole and is connected to the signal collection portion.
  • the first connecting section includes a plurality of tips, and the cross-sectional area of the tips gradually decreases in a direction toward the circuit board;
  • the tip can pierce the insulating film, and can be bent relative to the second connection section, so that at least part of the signal collection part is located between the first connection section and the second connection section .
  • the connecting member further includes a buffering portion connected to the connecting portion and the body portion;
  • the buffer portion includes a plurality of bending structures, and the bending structures protrude in a height direction.
  • the connecting component further includes a transition portion, the body portion is connected to the buffer portion, and the transition portion is connected between the buffer portion and the connecting portion.
  • the transition portion is provided with a reinforcing structure, and the reinforcing structure is arc-shaped.
  • the material of the connecting member includes copper-nickel alloy.
  • a second aspect of the embodiments of the present application provides a battery module, and the battery module includes:
  • a battery cell the battery cell includes an electrode lead
  • a connecting piece, the connecting piece is connected to the electrode lead of the battery cell
  • sampling component the sampling component is the above-mentioned sampling component
  • sampling assembly and the connecting piece are connected by the connecting component.
  • the body part is provided with a finite structure
  • the connecting piece is provided with a limiting hole, and the limiting structure is matched with the limiting hole.
  • a third aspect of the embodiments of the present application provides a battery pack, and the battery pack includes:
  • a box the box having a accommodating cavity
  • a battery module the battery module being the above-mentioned battery module
  • the battery module is accommodated in the accommodating cavity.
  • a fourth aspect of the embodiments of the present application provides a device that uses a battery cell as a power source, and the device includes:
  • a power source the power source is used to provide driving force for the device.
  • the above-mentioned battery module or the above-mentioned battery pack configured to provide electric energy to the power source.
  • the circuit board of the sampling assembly is electrically connected with the connecting piece through the connecting part, and mechanically connected through the connecting part, that is, the circuit board and the connecting piece do not need to be directly welded, so that the welding temperature can be reduced.
  • the risk of damage to the electronic devices in the circuit board caused by the high temperature increases the accuracy and reliability of the collection of the electrode leads of the battery cells by the circuit board.
  • the requirement for the high temperature resistance of the insulating film is reduced, that is, the insulating film can be made of materials with lower high temperature resistance, thereby reducing the cost of the insulating film.
  • FIG. 1 is a schematic structural diagram of a device provided by an embodiment of the application in a specific embodiment
  • FIG 2 is an exploded view of the battery pack in Figure 1 in a specific embodiment
  • FIG. 3 is a schematic structural diagram of the battery module in FIG. 2 in a specific embodiment
  • Figure 4 is an exploded view of Figure 3;
  • Figure 5 is a partial enlarged view of part I in Figure 3, in which the first connecting section is in the initial state;
  • Figure 6 is a partial enlarged view of part I in Figure 3, in which the first connecting section is in a connected state;
  • Figure 7 is a partial exploded view of the sampling component in Figure 4.
  • Fig. 8 is a partial enlarged view of part II in Fig. 7, in which the signal acquisition part is the first embodiment
  • Fig. 9 is a partial enlarged view of part II in Fig. 7, in which the signal acquisition part is a second embodiment
  • FIG. 10 is a schematic structural diagram of a connecting component provided by this application in a first specific embodiment
  • Fig. 11 is a schematic diagram of the structure of the connecting component provided by the application in the second specific embodiment; wherein, the first connecting section is in the initial state;
  • Fig. 12 is a schematic structural diagram of a connecting component provided by the application in a third specific embodiment; wherein, the first connecting section is in a connected state.
  • the embodiments of the present application provide a device D, a battery pack M, and a battery module M2 that use battery cells 5 as a power source.
  • the device D that uses battery cells 5 as a power source includes mobile equipment such as vehicles, ships, and small airplanes.
  • the device D includes a power source for providing driving power to the device D, and the power source may be configured as a battery module M2 (or battery pack M) that provides electric energy to the device D.
  • the driving force of the device D may be all electric energy, and may also include electric energy and other energy sources (such as mechanical energy).
  • the power source may be the battery module M2 (or the battery pack M), and the power source may also be the battery module M2 ( Or battery pack M) and engine, etc. Therefore, any device D that can use the battery cell 5 as a power source is within the protection scope of the present application.
  • the device D in the embodiment of the present application may be a new energy vehicle.
  • the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle.
  • the vehicle may include a battery pack M and a vehicle body.
  • the battery pack M is disposed on the vehicle body.
  • the vehicle body is also provided with a drive motor.
  • the drive motor is electrically connected to the battery pack M.
  • the battery pack M provides electrical energy to drive the motor.
  • the transmission mechanism is connected with the wheels on the vehicle body to drive the vehicle to travel.
  • the battery pack M may be horizontally arranged at the bottom of the vehicle body.
  • the battery pack M includes a box M1 and the battery module M2 of the present application, wherein the box M1 has a receiving cavity M13, the battery module M2 is received in the receiving cavity M13, and the number of the battery module M2 can be one Or multiple, multiple battery modules M2 are arranged in the accommodating cavity M13.
  • the type of the box M1 is not limited, and can be a frame-shaped box, a disk-shaped box, or a box-shaped box.
  • the box body M1 may include a lower box body M12 that accommodates the battery module M2 and an upper box body M11 that is closed with the lower box body M12.
  • the battery module M2 includes a plurality of battery cells 5 and a frame structure for fixing the battery cells 5, wherein the plurality of battery cells 5 are stacked along the length direction X.
  • the frame structure includes end plates 3, and the end plates 3 are located at both ends of the battery cells 5 along the length direction X after stacking, and are used to restrict the movement of the battery cells 5 along the length direction X.
  • the frame structure may further include side plates 4, and the two side plates 4 are located on both sides of the battery cells 5 in the width direction Y after the battery cells 5 are stacked, and the side plates 4 are connected with the end plates 3 to form a frame structure.
  • the battery cell 5 includes an electrode lead 51, and each battery cell 5 includes a positive electrode lead and a negative electrode lead.
  • a plurality of battery cells 5 are electrically connected, which can be connected in series or in parallel. Or hybrid connection, and the electrode leads 51 of the battery cells 5 are connected by the connecting piece 2.
  • the connecting piece 2 For example, when the battery cells 5 are connected in series, the positive electrode lead of a battery cell 5 and the adjacent battery cell 5 are connected in series.
  • the negative electrode lead of the body 5 is connected by the connecting piece 2.
  • the battery module M2 also includes a sampling component 1, which is used to collect signals such as temperature and voltage during the operation of the battery cell 5, and the collected signals pass through the connector Output, the sampling component 1 is electrically connected to the connecting piece 2 so that the information of the battery cell 5 can be collected through the connecting piece 2.
  • a sampling component 1 which is used to collect signals such as temperature and voltage during the operation of the battery cell 5, and the collected signals pass through the connector Output, the sampling component 1 is electrically connected to the connecting piece 2 so that the information of the battery cell 5 can be collected through the connecting piece 2.
  • the sampling assembly 1 includes a circuit board 11 and a connecting component 12.
  • the circuit board 11 includes a signal acquisition part 112 and an insulating film 111 connected to the signal acquisition part 112.
  • the signal acquisition part 112 is used for
  • the insulating film 111 provides insulation protection for the signal collecting part 112; as shown in FIG. 5 and FIG. 6, the connecting member 12 connects the circuit board 11 and the connecting sheet 2, so that the battery cell 5
  • the electrode lead 51 and the circuit board 11 are connected through the connecting member 12 and the connecting piece 2 to realize the collection of information of the battery cell 5.
  • the connecting member 12 includes a body portion 121 and a connecting portion 122, the body portion 121 is connected to the connecting portion 122, and the connecting member 12 is electrically connected to the signal collecting portion 112,
  • the connecting section 122 includes a first connecting section 122a and a second connecting section 122b.
  • the first connecting section 122a is connected to the second connecting section 122b.
  • at least part of the signal collecting section 112 is located in the first connecting section 122a. Between a connecting section 122a and a second connecting section 122b.
  • the circuit board 11 of the sampling assembly 1 and the connecting piece 2 are electrically connected through the connecting member 12 and mechanically connected through the connecting member 12, that is, the circuit board 11 and the connecting piece 2 do not need to be directly welded. Therefore, the risk of damage to the electronic devices in the circuit board 11 caused by the excessively high welding temperature can be reduced, and the accuracy and reliability of collecting the electrode leads 51 of the battery cell 5 by the circuit board 11 can be improved.
  • the insulating film 111 can be made of a material with lower high temperature resistance, thereby reducing the cost of the insulating film 111 .
  • the circuit board 11 when the circuit board 11 is connected to the connecting component 12, along the height direction Z, at least part of the signal collecting portion 112 is located between the first connecting section 122a and the second connecting section 122b of the connecting section 122, so as to be able to pass through the first connecting section 122a and the second connecting section 122b.
  • the connecting section 122a and the second connecting section 122b are connected to the signal collecting part 112 and electrically connected to the signal collecting part 112.
  • the signal collection part 112 is provided with a second through hole 112c, and the first connection section 122a of the connection part 122 can pass through the second through hole 112c, so that at least part of the signal collection part 112 Located between the first connecting section 122a and the second connecting section 122b.
  • the connection between the connecting portion 122 and the signal collecting portion 112 can be facilitated.
  • connection part 122 can be easily connected to the signal collection part 112, and the integrity of the signal collection part 112 can be improved, thereby reducing the deformation and fracture of the signal collection part 112. risk.
  • the insulating film 111 is provided with a first through hole 111c.
  • the connecting portion 122 passes through the first through hole 111c and is connected to the signal
  • the collection unit 112 is connected.
  • the connecting member 12 and the insulating film 111 are arranged along the thickness direction Z, and by opening the first through hole 111c in the insulating film 111, the connecting portion 122 of the connecting member 12 can be arranged along the thickness direction Z. Passing through the first through hole 111c and extending into the sampling assembly 1 to be electrically connected to the signal collection part 112, that is, after the first through hole 111c is provided, signal collection can be facilitated.
  • the signal collection part 112 may be provided with two second through holes 112c, and the two second through holes 112c are spaced apart, and the above-mentioned connecting part 122 may include two first through holes 112c arranged at intervals.
  • the connecting section 122a, the two first connecting sections 122a can respectively pass through the two second through holes 112c, and are bent relative to the signal collecting part 112, and the two first connecting sections 122a are bent toward each other, and the two first connecting sections 122a are bent toward each other.
  • the segment 122a and the second connecting segment 122b form an enveloping structure as shown in FIG. 11, and they enclose a receiving cavity 122d, and the signal collecting portion 112 between the two second through holes 112c is located in the receiving cavity 122d.
  • the connection area between the connecting component 12 and the signal collection portion 112 of this structure is relatively large, so that the reliability of the connection between the two and the stability of signal collection can be improved.
  • the signal collection part 112 may not be provided with a second through hole, and the signal collection part 112 may include a conductive sheet 112b and a sampling line 112a, wherein the sampling line 112a is used for collecting For the signal of the battery cell 5, the conductive sheet 112b is electrically connected to the sampling line 112a, and the sampling line 112a is located on the side of the conductive sheet 112b close to the connecting member 12. Therefore, at least part of the sampling line 112a can be located in the above-mentioned accommodating cavity 122d. In this way, the connection part 12 is connected to the sampling line 112a.
  • the signal collection part 112 is provided with a sampling line 112a, which can facilitate the connection between the signal collection part 112 and the connection component 12, and can improve the reliability of the connection between the two.
  • the first connecting section 122a in the connecting portion 122 of the connecting member 12, includes a plurality of tips 122e. Along the direction toward the circuit board 11, the cross-sectional area of the tips 122e gradually decreases.
  • the tip 122e can pierce the insulating film 111 of the circuit board 11 and bend relative to the second connecting section 122b, as shown in FIG. 6, In this way, at least part of the signal collecting part 112 is located between the first connecting section 122a and the second connecting section 122b.
  • the insulating film 111 of the circuit board 11 does not need to be provided with a first through hole in advance.
  • the connecting member 12 When the connecting member 12 is connected to the circuit board 11, it is only necessary to pierce the insulating film 111 through the tip 122e of the connecting member 12.
  • the connection position of the connecting member 12 and the circuit board 11 is not restricted by the position of the first through hole, so that the flexibility of the connection between the connecting member 12 and the circuit board 11 can be improved.
  • the signal collecting part 112 may be provided with a second through hole 112c, after the tip 122e pierces the insulating film 111, it can pass through the second through hole 112c to be connected to the signal collecting part 112; or, as shown in the figure As shown in 8, the signal acquisition part 112 may not be provided with a second through hole.
  • the signal acquisition part 112 may include a conductive sheet 112b and a sampling line 112a, wherein the sampling line 112a is used to collect the signal of the battery cell 5.
  • the conductive sheet 112b is electrically connected to the sampling line 112a, and the sampling line 112a is located on the side of the conductive sheet 112b close to the connecting member 12.
  • the tip 122e pierces the insulating film 111, it can be connected to the sampling line 112a, that is, at least part of the sampling line 112a can be located between the tip 122e and the second connecting section 112b, thereby connecting the sampling line 112a and the tip 122e.
  • the second connecting section 122b of the connecting member 12 is provided with a guide groove 122c, and the connecting portion 122 of the connecting member 12 may include a plurality of tips 122e, and include two rows of tips that are parallel to each other. 122e. Both rows of tips 122e include a plurality of tips 122e arranged at intervals. The two rows of tips 122e can be bent toward each other, and after bending, there is a preset space between the tips 122e and the bottom wall of the guide groove 122c. The space is used for accommodating the signal collecting part 112 (for example, the sampling line 112a) between the first connecting section 122a and the second connecting section 122b.
  • the signal collecting part 112 for example, the sampling line 112a
  • the connecting member 12 further includes a buffering portion 123, which is located between the connecting portion 122 and the body portion 121, and is connected to the two, and the buffering portion 123 receives It can be deformed under force.
  • the connecting portion 122 and the body portion 121 are arranged along the width direction Y of the battery module M2, and therefore, the buffer portion 123 can be deformed along the width direction Y.
  • the battery module M2 vibrates during operation
  • the deformation of the buffer portion 123 can buffer the impact load received by the connecting member 12.
  • the connecting member 12 is subjected to an expansion force. At this time, The deformation of the buffer portion 123 can buffer the expansion force received by the connecting member 12, thereby reducing the risk of the connecting member 12 being disconnected from the circuit board 11.
  • the buffer portion 123 may include a plurality of bending structures 123a, and the bending structures 123a protrude along the height direction Z (the thickness direction Z of the sampling assembly 1). Therefore, when the connecting member 12 is forced to cause the connecting portion 122 and the main body 121 to move away from each other, the bending structure 123a can be deformed, thereby compensating for the deformation of the connecting portion 122 and the main body 121, and preventing the connecting portion 122 and the main body 121 from being deformed. The reliability of the connection between the connecting member 12 and the circuit board 11 caused by the pulling 121 is reduced.
  • the gap 123b between adjacent bending structures 123a there is a gap 123b between adjacent bending structures 123a.
  • the gap 123b allows the bending structures 123a to be spaced apart from each other, so that the buffer portion 123 is easily deformed and improves the connection member 12 and the circuit. Reliability of board 11 connection.
  • the gap 123b between the adjacent bending structures 123a can also reduce the weight of the connecting member 12, thereby increasing the energy density of the battery module M2.
  • the connecting member 12 may further include a transition portion 124, which is located between the connecting portion 122 and the buffer portion 123 and is connected to both, specifically, the The transition portion 124 may have a tapered structure, and along the direction from the buffer portion 123 to the connecting portion 122, the cross-sectional area of the transition portion 124 is gradually reduced, so that both ends of the transition portion 124 can be connected to the buffer portion 123 and the connecting portion. 122 are all matched.
  • the transition portion 124 may be provided with a reinforcement structure 124a, which can be used to increase the strength of the connection portion 122 and the transition portion 124, reduce the risk of deformation of the connection portion 122, and thereby improve the connection.
  • the reinforcing structure 124a may be arc-shaped, and the reinforcing structure 124a of the arc-shaped structure can reduce stress concentration, thereby improving the strength and rigidity of the connecting member 12.
  • the body portion 121 of the connecting member 12 is provided with a limiting structure 121a, and the limiting structure 121a may be a sheet-like structure extending downward, correspondingly, such as
  • the connecting piece 2 of the battery module M2 has a limiting hole 21, and at least part of the limiting structure 121 a can extend into the limiting hole 21 and cooperate with the limiting hole 21.
  • the connecting member 12 in the battery module M2, along the height direction Z, the connecting member 12 is located between the connecting piece 2 and the sampling assembly 1, and the connecting member 12 is connected to the circuit board 11 (including mechanical connection And electrical connection).
  • the connecting component 12 is also connected to the connecting piece 2, which can be specifically connected by welding, so as to realize the electrical connection between the connecting piece 2 and the circuit board 11, so that the circuit board 11 can collect various information through the connecting piece 2.
  • the connecting member 12 and the connecting piece 2 are matched with the limiting hole 21 through the above-mentioned limiting structure 121a, so that the relative movement of the connecting member 12 and the connecting piece 2 is restricted before the welding of the connecting member 12 and the connecting piece 2, thereby improving the welding of the two. reliability.
  • the material of the connecting member 12 may be copper-nickel alloy (copper-nickel alloy), the copper-nickel alloy is a copper-based alloy with nickel as the main additive element, and the content of nickel can be adjusted according to actual needs.
  • the connecting component 12 is copper-nickel alloy, the connecting component 12 has higher ductility and strength, thereby facilitating crimping, improving the reliability of the connection between the connecting component 12 and the signal collecting portion 112, and at the same time,
  • the connecting member 12 can be welded to the connecting piece 2 (the connecting piece 2 may be made of aluminum).
  • the connecting component 12 and the connecting piece 2 in this embodiment have high connection reliability, and also have a high connection reliability with the signal collection part 112.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)

Abstract

一种采样组件（1）、电池模块（M2）、电池组（M）和装置（D）。采样组件（1），包括：电路板（11），所述电路板（11）包括信号采集部（112）和连接所述信号采集部（112）的绝缘膜（111）；连接部件（12），所述连接部件（12）包括本体部（121）和连接部（122），所述本体部（121）与所述连接部（122）连接，且所述连接部（122）与所述信号采集部（112）电连接；其中，沿高度方向（Z），所述连接部（122）包括第一连接段（122a）和第二连接段（122b），所述第一连接段（122a）与所述第二连接段（122b）连接；沿高度方向（Z），所述信号采集部（112）的至少部分位于所述第一连接段（122a）与所述第二连接段（122b）之间。该采样组件（1）的电路板（11）与连接片（2）之间通过连接部件（12）电连接，并通过该连接部件（12）机械连接，无需直接焊接，能够降低焊接温度过高导致的电路板（11）中的电子器件损坏的风险，提高电路板（11）对电池单体（5）的电极引线（51）的采集精度和可靠性。同时，省去焊接后，对绝缘膜（111）的耐高温性能的要求降低，从而降低绝缘膜（111）的成本。

Description

采样组件、电池模块、电池组及装置
本申请要求于2019年12月31日提交中国专利局，申请号为201922495201.4，发明名称为“采样组件、电池模块、电池组及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及储能器件技术领域，尤其涉及一种采样组件、电池模块、电池组及装置。
背景技术
电池模块包括电池单体，相邻电池单体的电极引线通过连接片连接，电池单体工作过程中产生热量，热量积聚导致电池模块的温度升高，为了使得电池模块具有较高的效率，需要尽量将电池模块的温度控制在上述正常工作温度范围内，该电池模块通过FPC(Flexible Printed Circuit,简称FPC)采集连接片的电压来获得电池单体工作过程中的温度。相关技术中，FPC与连接片之间焊接连接，但是，由于焊接过程中的温度较高，存在损坏FPC中电子器件的风险，从而影响FPC的测量精度和可靠性。
发明内容
本申请提供了一种采样组件、电池模块、电池组及装置，该采样组件对电池单体的采集精度和可靠性较高。
本申请实施例第一方面提供一种采样组件，所述采样组件包括：
电路板，所述电路板包括信号采集部和连接所述信号采集部的 绝缘膜；
连接部件，所述连接部件包括本体部和连接部，所述本体部与所述连接部连接，且所述连接部与所述信号采集部电连接；
其中，沿高度方向，所述连接部包括第一连接段和第二连接段，所述第一连接段与所述第二连接段连接；
沿高度方向，所述信号采集部的至少部分位于所述第一连接段与所述第二连接段之间。
在一些实施例中，所述信号采集部开设有第二通孔，所述第一连接段穿过所述第二通孔，以使所述信号采集部的至少部分位于所述第一连接段与所述第二连接段之间。
在一些实施例中，所述绝缘膜开设有第一通孔，所述连接部的至少部分穿过所述第一通孔，并与所述信号采集部连接。
在一些实施例中，所述第一连接段包括多个尖端，沿朝向所述电路板的方向，所述尖端的截面积逐渐减小；
所述尖端能够刺破所述绝缘膜，并能够相对于所述第二连接段弯折，以使所述信号采集部的至少部分位于所述第一连接段与所述第二连接段之间。
在一些实施例中，所述连接部件还包括缓冲部，所述缓冲部与所述连接部和所述本体部连接；
所述缓冲部包括多个弯折结构，所述弯折结构沿高度方向凸出。
在一些实施例中，相邻所述弯折结构之间具有间隙。
在一些实施例中，所述连接部件还包括过渡部，所述本体部与所述缓冲部连接，且所述过渡部连接于所述缓冲部与所述连接部之间。
在一些实施例中，所述过渡部设置有加强结构，所述加强结构为弧形。
在一些实施例中，所述连接部件的材质包括铜镍合金。
本申请实施例第二方面提供一种电池模块，所述电池模块包括：
电池单体，所述电池单体包括电极引线；
连接片，所述连接片连接所述电池单体的所述电极引线；
采样组件，所述采样组件为以上所述的采样组件；
其中，所述采样组件与所述连接片通过所述连接部件连接。
在一些实施例中，所述本体部设置有限位结构；
所述连接片开设有限位孔，所述限位结构与所述限位孔配合。
本申请实施例第三方面提供一种电池组，所述电池组包括：
箱体，所述箱体具有容纳腔；
电池模块，所述电池模块为以上所述的电池模块；
其中，所述电池模块容纳于所述容纳腔。
本申请实施例第四方面提供一种装置，使用电池单体作为电源，所述装置包括：
动力源，所述动力源用于为所述装置提供驱动力；和，
被配置为向所述动力源提供电能的以上所述的电池模块，或者如以上所述的电池组。
本申请实施例中，该采样组件的电路板与连接片之间通过连接部件电连接，并通过该连接部件机械连接，即该电路板与连接片之间无需直接焊接，从而能够降低焊接温度过高导致的电路板中的电子器件损坏的风险，提高电路板对电池单体的电极引线的采集精度和可靠性。同时，省去电路板与连接片之间的焊接后，对绝缘膜的耐高温性能的要求降低，即绝缘膜可采用耐高温性能较低的材质，从而降低绝缘膜的成本。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性 的，并不能限制本申请。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中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性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例所提供装置在一种具体实施例中的结构示意图；
图2为图1中电池组在一种具体实施例中的爆炸图；
图3为图2中电池模块在一种具体实施例中的结构示意图；
图4为图3的爆炸图；
图5为图3中Ⅰ部分的局部放大图，其中，第一连接段为初始状态；
图6为图3中Ⅰ部分的局部放大图，其中，第一连接段为连接状态；
图7为图4中采样组件的局部爆炸图；
图8为图7中Ⅱ部分的局部放大图，其中，信号采集部为第一种实施例；
图9为图7中Ⅱ部分的局部放大图，其中，信号采集部为第二种实施例；
图10为本申请所提供连接部件在第一种具体实施例中的结构示意图；
图11为本申请所提供连接部件在第二种具体实施例中的结构 示意图；其中，第一连接段为初始状态；
图12为本申请所提供连接部件在第三种具体实施例中的结构示意图；其中，第一连接段为连接状态。
附图标记：
D-装置；
M-电池组；
M1-箱体；
M11-上箱体；
M12-下箱体；
M13-容纳腔；
M2-电池模块；
1-采样组件；
11-电路板；
111-绝缘膜；
111a-第一绝缘膜；
111b-第二绝缘膜；
111c-第一通孔；
112-信号采集部；
112a-采样线；
112b-导电片；
112c-第二通孔；
12-连接部件；
121-本体部；
121a-限位结构；
122-连接部；
122a-第一连接段；
122b-第二连接段；
122c-导向槽；
122d-容纳腔；
122e-尖端；
123-缓冲部；
123a-弯折结构；
123b-间隙；
124-过渡部；
124a-加强结构；
2-连接片；
21-限位孔；
3-端板；
4-侧板；
5-电池单体；
51-电极引线。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，本申请所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员 在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本申请中使用的术语“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。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
本申请实施例提供一种使用电池单体5作为电源的装置D、电池组M和电池模块M2，其中，使用电池单体5作为电源的装置D包括车辆、船舶、小型飞机等移动设备，该装置D包括动力源，该动力源用于为装置D提供驱动力，且该动力源可被配置为向装置D提供电能的电池模块M2(或电池组M)。其中，该装置D的驱动力可全部为电能，也可包括电能和其他能源(例如机械能)，该动力源可为电池模块M2(或电池组M)，该动力源也可为电池模块M2(或电池组M)和发动机等。因此，只要能够使用电池单体5作为电源的装置D均在本申请的保护范围内。
如图1所示，以车辆为例，本申请实施例中的装置D可为新能源汽车，该新能源汽车可为纯电动汽车，也可为混合动力汽车或增程式汽车等。其中，该车辆可包括电池组M和车辆主体，该电池组M设置于车辆主体，该车辆主体还设置有驱动电机，且驱动电机与电池组M电连接，由电池组M提供电能，驱动电机通过传动机构与车辆主体上的车轮连接，从而驱动车辆行进。具体地，该电池组M可水平设置车辆主体的底部。
如图2所示，电池组M包括箱体M1和本申请的电池模块M2，其中，箱体M1具有容纳腔M13，电池模块M2收容于该容纳腔M13内，电池模块M2的数量可为一个或多个，多个电池模块M2排列布置于容纳腔M13内。箱体M1的类型不受限制，可为框状箱体、盘状箱体或盒状箱体等。具体地，如图2所示，该箱体M1可包括容纳电池模块M2的下箱体M12和与下箱体M12盖合的上箱体M11。
更具体地，如图3所示，该电池模块M2包括多个电池单体5和用于固定电池单体5的框架结构，其中，多个电池单体5沿长度方向X堆叠。该框架结构包括端板3，且端板3位于电池单体5堆叠后沿长度方向X的两端部，用于限制电池单体5沿长度方向X的运动，同时，在一种具体实施例中，该框架结构还可包括侧板4，两侧板4位于电池单体5堆叠后沿宽度方向Y的两侧，且该侧板4与端板3连接，从而形成框架结构。
具体地，电池单体5包括电极引线51，且各电池单体5均包括正极电极引线和负极电极引线，在电池模块中，多个电池单体5之间电连接，具体可采用串联、并联或混联等连接方式，且电池单体5的电极引线51之间通过连接片2连接，例如，当电池单体5串联时，一电池单体5的正极电极引线和与其相邻的电池单体5的负极电极 引线通过连接片2连接。
同时，如图3和图4所示，该电池模块M2还包括采样组件1，该采样组件1用于采集电池单体5工作过程中的温度和电压等信号，且采集到的信号通过连接器输出，该采样组件1与连接片2电连接，从而能够通过连接片2实现对电池单体5信息的采集。
具体地，如图5所示，该采样组件1包括电路板11和连接部件12，其中，电路板11包括信号采集部112和连接该信号采集部112的绝缘膜111，该信号采集部112用于采集电池单体5的信息，绝缘膜111为信号采集部112提供绝缘保护；如图5和图6所示，该连接部件12连接电路板11与连接片2，从而使得电池单体5的电极引线51与电路板11之间通过连接部件12和连接片2连接，实现电池单体5信息的采集。
其中，如图5和图6和图10所示，该连接部件12包括本体部121和连接部122，该本体部121与连接部122连接，且该连接部件12与信号采集部112电连接，其中，沿高度方向Z，连接部122包括第一连接段122a和第二连接段122b，第一连接段122a与第二连接段122b连接，沿高度方向Z，信号采集部112的至少部分位于第一连接段122a与第二连接段122b之间。
本申请实施例中，该采样组件1的电路板11与连接片2之间通过连接部件12电连接，并通过该连接部件12机械连接，即该电路板11与连接片2之间无需直接焊接，从而能够降低焊接温度过高导致的电路板11中的电子器件损坏的风险，提高电路板11对电池单体5的电极引线51的采集精度和可靠性。同时，省去电路板11与连接片2之间的焊接后，对绝缘膜111的耐高温性能的要求降低，即绝缘膜111可采用耐高温性能较低的材质，从而降低绝缘膜111的成本。
其中，该电路板11与连接部件12连接时，沿高度方向Z，信号采集部112的至少部分位于连接部122的第一连接段122a和第二连接段122b之间，从而能够通过该第一连接段122a与第二连接段122b连接信号采集部112，并与信号采集部112电连接。
具体地，如图9-11所示，信号采集部112开设有第二通孔112c，连接部122的第一连接段122a能够穿过第二通孔112c，以使信号采集部112的至少部分位于第一连接段122a与第二连接段122b之间。本实施例中，第一连接段122a穿过第二通孔112c后，能够便于实现连接部122与信号采集部112之间的连接。
本实施例中，通过在信号采集部112设置第二通孔112c，能够便于连接部122与信号采集部112连接，并能够提高信号采集部112的完整性，从而降低信号采集部112变形断裂的风险。
在一些实施例中，如图9所示，该绝缘膜111开设有第一通孔111c，沿采样组件1的厚度方向Z，连接部122的至少部分穿过第一通孔111c，并与信号采集部112连接。
本实施例中，如图9所示，连接部件12与绝缘膜111沿厚度方向Z布置，且通过在绝缘膜111开设第一通孔111c，使得连接部件12的连接部122能够沿厚度方向Z穿过该第一通孔111c，并伸入采样组件1内部与信号采集部112电连接，即设置该第一通孔111c后，能够便于实现信号的采集。
如图11所示的实施例中，沿厚度方向Z延伸的第一连接段122a穿过第二通孔112c后，能够相对于信号采集部112弯折，且弯折后，沿厚度方向Z，该第一连接段122a与信号采集部112抵接，和/或，第二连接段122b与信号采集部112抵接。更具体地，如图9所示，该信号采集部112可以开设有两个第二通孔112c，且两个第二通孔 112c间隔分布，上述连接部122可以包括间隔设置的两个第一连接段122a，两个第一连接段122a能够分别穿过两个第二通孔112c，并相对于信号采集部112弯折，且两个第一连接段122a相向弯折，两个第一连接段122a和第二连接段122b形成图11所示的环抱型结构，且二者围成容纳腔122d，两个第二通孔112c之间的信号采集部112位于该容纳腔122d内。本实施例中，该结构的连接部件12与信号采集部112之间的连接面积较大，从而能够二者的连接可靠性以及提高信号采集的稳定性。
在另一种实施例中，如图8所示，上述信号采集部112可以不设置第二通孔，该信号采集部112可以包括导电片112b和采样线112a，其中，采样线112a用于采集电池单体5的信号，导电片112b与采样线112a电连接，且该采样线112a位于导电片112b靠近连接部件12的一侧，因此，该采样线112a的至少部分能够位于上述容纳腔122d之间，从而实现连接部件12与采样线112a连接。
本实施例中，该信号采集部112通过设置采样线112a，能够便于信号采集部112与连接部件12连接，并能够提高二者连接的可靠性。
在另一种实施例中，如图12所示，该连接部件12的连接部122中，第一连接段122a包括多个尖端122e，沿朝向电路板11的方向，尖端122e的截面积逐渐减，当连接部件12与电路板11连接时，如图5所示，该尖端122e能够刺破电路板11的绝缘膜111，并能够相对于第二连接段122b弯折，如图6所示，以使信号采集部112的至少部分位于第一连接段122a与第二连接段122b之间。
本实施例中，该电路板11的绝缘膜111无需提前设置第一通孔，当连接部件12与电路板11连接时，仅需通过连接部件12的尖 端122e刺破绝缘膜111即可，因此，连接部件12与电路板11的连接位置不受第一通孔位置的限制，从而能够提高连接部件12与电路板11连接的灵活性。
其中，本实施例中，信号采集部112可以设置有第二通孔112c，尖端122e刺破绝缘膜111后，能够穿过第二通孔112c，从而与信号采集部112连接；或者，如图8所示，该信号采集部112也可以不设置第二通孔，此时，该信号采集部112可以包括导电片112b和采样线112a，其中，采样线112a用于采集电池单体5的信号，导电片112b与采样线112a电连接，且该采样线112a位于导电片112b靠近连接部件12的一侧。因此，尖端122e刺破绝缘膜111后，能够与采样线112a连接，即该采样线112a的至少部分能够位于尖端122e与第二连接段112b之间，从而连接采样线112a与尖端122e。
本实施例中，如图12所示，该连接部件12的第二连接段122b设置有导向槽122c，该连接部件12的连接部122可以包括多个尖端122e，且包括两排相互平行的尖端122e，两排尖端122e均包括多个间隔设置的尖端122e，两排尖端122e能够相向弯折，且弯折后，该尖端122e与导向槽122c的底壁之间具有预设空间，该预设空间用于容纳位于第一连接段122a和第二连接段122b之间的信号采集部112(例如采样线112a)。
在一些实施例中，如图10-12所示，该连接部件12还包括缓冲部123，该缓冲部123位于连接部122和本体部121之间，并与二者连接，该缓冲部123受力时能够变形，例如，如图5所示，该连接部122与本体部121沿电池模块M2的宽度方向Y布置，因此，缓冲部123能够沿宽度方向Y变形。电池模块M2工作过程中发生振动时，该缓冲部123的变形能够缓冲连接部件12受到的冲击载荷，另外， 电池模块M2工作过程中发生膨胀时，连接部件12受到膨胀力的作用，此时，缓冲部123的变形能够缓冲连接部件12受到的膨胀力，从而降低连接部件12与电路板11断开的风险。
具体地，如图10-12所示，该缓冲部123可以包括多个弯折结构123a，该弯折结构123a沿高度方向Z(采样组件1的厚度方向Z)凸出。因此，当连接部件12受力导致连接部122与本体部121具有相互远离的趋势时，该弯折结构123a能够变形，从而补偿连接部122与本体部121的变形，防止连接部122与本体部121拉扯导致的连接部件12与电路板11连接可靠性降低。
更具体地，如图10-12所示，相邻弯折结构123a之间具有间隙123b，该间隙123b使得各弯折结构123a相互间隔，从而使得缓冲部123容易变形，提高连接部件12与电路板11连接的可靠性。另外，相邻弯折结构123a之间的间隙123b还能够减小连接部件12的重量，从而提高电池模块M2的能量密度。
在一些实施例中，如图10-12所示，该连接部件12还可以包括过渡部124，该过渡部124位于连接部122与缓冲部123之间，并与二者连接，具体地，该过渡部124具体可以为锥形结构，且沿从缓冲部123到连接部122的方向，过渡部124的截面积逐渐减小，从而使得该过渡部124的两端能够与缓冲部123和连接部122均匹配。
更具体地，如图11所示，该过渡部124可以设置有加强结构124a，该加强结构124a能够用于提高连接部122和过渡部124的强度，降低连接部122变形的风险，从而提高连接部122与电路板11连接的可靠性。其中，该加强结构124a可以为弧形，该弧形结构的加强结构124a能够减小应力集中，从而提高连接部件12的强度和刚度。
在另一种实施例中，如图10-12所示，该连接部件12的本体部121设置有限位结构121a，该限位结构121a具体可以为向下延伸的片状结构，相应地，如图5和图6所示，电池模块M2的连接片2开设有限位孔21，该限位结构121a的至少部分能够伸入限位孔21内，并与限位孔21配合。
以上各实施例中，如图6所示，在电池模块M2中，沿高度方向Z，连接部件12位于连接片2与采样组件1之间，且连接部件12与电路板11连接(包括机械连接和电连接)，同时，该连接部件12还与连接片2连接，具体可采用焊接的方式连接，从而实现连接片2与电路板11的电连接，使得电路板11能够通过连接片2采集各电池单体5的信息。
具体地，连接部件12与连接片2之间通过上述限位结构121a与限位孔21配合，从而在连接部件12与连接片2焊接之前限制二者的相对运动，从而能够提高二者的焊接可靠性。
以上各实施例中，连接部件12的材质可以为铜镍合金(白铜)，该铜镍合金为以镍为主要添加元素的铜基合金，且镍的含量可以根据实际需要调整。该连接部件12的材质为铜镍合金时，使得该连接部件12具有较高的延展性和强度，从而能够便于压接，提高连接部件12与信号采集部112的连接可靠性，同时，还使得该连接部件12能够与连接片2焊接(连接片2可以为铝材质)。
因此，本实施例中的连接部件12与连接片2具有较高的连接可靠性，与信号采集部112也具有较高的连接可靠性。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应 包含在本申请的保护范围之内。

Claims (13)

  1. 采样组件(1)，包括：
    电路板(11)，所述电路板(11)包括信号采集部(112)和连接所述信号采集部(112)的绝缘膜(111)；
    连接部件(12)，所述连接部件(12)包括本体部(121)和连接部(122)，所述本体部(121)与所述连接部(122)连接，且所述连接部(122)与所述信号采集部(112)电连接；
    其中，沿高度方向(Z)，所述连接部(122)包括第一连接段(122a)和第二连接段(122b)，所述第一连接段(122a)与所述第二连接段(122b)连接；
    沿高度方向(Z)，所述信号采集部(112)的至少部分位于所述第一连接段(122a)与所述第二连接段(122b)之间。
  2. 根据权利要求1所述的采样组件(1)，其中，所述信号采集部(112)开设有第二通孔(112c)，所述第一连接段(122a)穿过所述第二通孔(112c)，以使所述信号采集部(112)的至少部分位于所述第一连接段(122a)与所述第二连接段(122b)之间。
  3. 根据权利要求2所述的采样组件(1)，其中，所述绝缘膜(111)开设有第一通孔(111c)，所述连接部(122)的至少部分穿过所述第一通孔(111c)，并与所述信号采集部(112)连接。
  4. 根据权利要求1-3中任一项所述的采样组件(1)，其中，所述第一连接段(122a)包括多个尖端(122e)，沿朝向所述电路板(11)的方向，所述尖端(122e)的截面积逐渐减小；
    所述尖端(122e)能够刺破所述绝缘膜(111)，并能够相对于所述第二连接段(122b)弯折，以使所述信号采集部(112)的至少部分位于 所述第一连接段(122a)与所述第二连接段(122b)之间。
  5. 根据权利要求1-4中任一项所述的采样组件(1)，其中，所述连接部件(12)还包括缓冲部(123)，所述缓冲部(123)与所述连接部(122)和所述本体部(121)连接；
    所述缓冲部(123)包括多个弯折结构(123a)，所述弯折结构(123a)沿高度方向(Z)凸出。
  6. 根据权利要求5所述的采样组件(1)，其中，相邻所述弯折结构(123a)之间具有间隙(123b)。
  7. 根据权利要求5-6中任一项所述的采样组件(1)，其中，所述连接部件(12)还包括过渡部(124)，所述本体部(121)与所述缓冲部(123)连接，且所述过渡部(124)连接于所述缓冲部(123)与所述连接部(122)之间。
  8. 根据权利要求7所述的采样组件(1)，其中，所述过渡部(124)设置有加强结构(124a)，所述加强结构(124a)为弧形。
  9. 根据权利要求1-8中任一项所述的采样组件(1)，其中，所述连接部件(12)的材质包括铜镍合金。
  10. 一种电池模块(M2)，包括：
    电池单体(5)，所述电池单体(5)包括电极引线(51)；
    连接片(2)，所述连接片(2)连接所述电池单体(5)的所述电极引线(51)；
    采样组件(1)，所述采样组件(1)为权利要求1-9中任一项所述的采样组件(1)；
    其中，所述采样组件(1)与所述连接片(2)通过所述连接部件(12)连接。
  11. 根据权利要求10所述的电池模块(M2)，其中，所述本体部 (121)设置有限位结构(121a)；
    所述连接片(2)开设有限位孔(21)，所述限位结构(121a)与所述限位孔(21)配合。
  12. 一种电池组(M)，包括：
    箱体(M1)，所述箱体(M1)具有容纳腔(M13)；
    电池模块(M2)，所述电池模块(M2)为权利要求10-11中任一项所述的电池模块(M2)；
    其中，所述电池模块(M2)容纳于所述容纳腔(M13)。
  13. 一种装置(D)，所述装置(D)使用电池单体(5)作为电源，所述装置(D)包括：
    动力源，所述动力源用于为所述装置(D)提供驱动力；和，
    被配置为向所述动力源提供电能的如权利要求10-11中任一项所述的电池模块(M2)，或者如权利要求12所述的电池组(M)。
PCT/CN2020/119086 2019-12-31 2020-09-29 采样组件、电池模块、电池组及装置 WO2021135475A1 (zh)

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