CN114069061A - Vehicle, battery module and sampling equipment for battery module - Google Patents

Vehicle, battery module and sampling equipment for battery module Download PDF

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Publication number
CN114069061A
CN114069061A CN202010779244.XA CN202010779244A CN114069061A CN 114069061 A CN114069061 A CN 114069061A CN 202010779244 A CN202010779244 A CN 202010779244A CN 114069061 A CN114069061 A CN 114069061A
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CN
China
Prior art keywords
sampling
voltage sampling
arm
temperature
battery module
Prior art date
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Pending
Application number
CN202010779244.XA
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Chinese (zh)
Inventor
陆珂伟
周定贤
李乔博
陈海平
李超
杜宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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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Publication date
Application filed by SAIC Motor Corp Ltd filed Critical SAIC Motor Corp Ltd
Priority to CN202010779244.XA priority Critical patent/CN114069061A/en
Publication of CN114069061A publication Critical patent/CN114069061A/en
Pending legal-status Critical Current

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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
    • H01M10/4285—Testing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • 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
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The embodiment of the application provides a battery, battery module and be used for battery module's sampling equipment, and this sampling equipment includes: the device comprises a main cable, a voltage sampling arm, a voltage sampling device, a temperature sampling arm and a temperature sampling device. The voltage sampling arm and the temperature sampling arm are at least one connecting wire in the main cable respectively. The voltage sampling device is connected with the voltage sampling arm, and the temperature sampling device is connected with the temperature sampling arm for transmitting a voltage sampling signal and a temperature sampling signal through the main cable. In the scheme, the voltage sampling arm and the temperature sampling arm are respectively at least one connecting wire of the main cable, so that the cost of the main cable is low, the weight of the main cable is light, the cost and the weight of sampling equipment are reduced, and meanwhile, the process of the main cable is mature, and mass automatic production can be realized. In addition, because the module to different structures, this sampling equipment need not the customization development mould, and this has further reduced the cost of whole power battery.

Description

Vehicle, battery module and sampling equipment for battery module
Technical Field
The embodiment of the application relates to the technical field of vehicles, and more particularly relates to a vehicle, a battery module and sampling equipment for the battery module.
Background
Lithium ion batteries are widely used in the field of new energy electric vehicles due to their excellent power supply capability, and when they are used specifically, a plurality of lithium ion cores are combined into a battery module as an energy storage unit of a power battery of a vehicle.
In order to ensure the safety of the battery module during operation, the voltage and temperature of the battery module need to be detected, and the current data collection scheme generally adopts a wire harness plus a Printed Circuit Board (PCB) or a Flexible Printed Circuit Board (FPC) for collection. The scheme of adopting the wire harness and the PCB needs a large amount of labor investment, is difficult to realize automatic production, can not meet the requirements of large batch, and has poor consistency of the installed finished product and heavier weight. By adopting the FPC scheme, automatic production can be realized, the weight is light, the cost of the FPC is high, and different tools and dies are needed due to the fact that PFCs in different shapes need to be customized according to different battery module structures, and the cost of the whole power battery is high.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a vehicle, a battery module and a sampling apparatus for the battery module, which overcome the above-mentioned disadvantages in the related art.
In a first aspect, an embodiment of the present application provides a sampling device for a battery module, which includes: the temperature sampling device comprises a main cable, a voltage sampling arm, a voltage sampling device, a temperature sampling arm and a temperature sampling device, wherein the voltage sampling arm and the temperature sampling arm are respectively at least one connecting wire in the main cable;
the voltage sampling device is connected with the voltage sampling arm, and the temperature sampling device is connected with the temperature sampling arm for transmitting a voltage sampling signal and a temperature sampling signal through the main cable.
Optionally, in an embodiment of the present application, the control device further includes an information transmission interface, and the main cable is connected to the control device through the information transmission interface, so as to transmit the voltage sampling signal and the temperature sampling signal to the control device.
Optionally, in an embodiment of the present application, the voltage sampling arm is oriented to the voltage sampling position of the battery module by folding, and the temperature sampling arm is oriented to the temperature sampling position of the battery module by folding.
Optionally, in an embodiment of the present application, the folding regions of the voltage sampling arm and the temperature sampling arm are respectively provided with a fixing component.
Optionally, in an embodiment of the present application, the voltage sampling device is a voltage sampling terminal, one end of the voltage sampling terminal is connected to the voltage sampling arm, and the other end of the voltage sampling terminal is connected to a voltage sampling position of the battery module.
Optionally, in an embodiment of the present application, the voltage sampling device is a wire core obtained by removing an insulating layer at the end of the voltage sampling arm, and the wire core is connected to the voltage sampling position of the battery module.
Optionally, in an embodiment of the present application, the temperature sampling device is a negative temperature coefficient NTC thermistor, and the NTC thermistor is connected to the temperature sampling arm.
Optionally, in an embodiment of the present application, the temperature sampling device includes an NTC thermistor and a flexible printed circuit board, and the NTC thermistor is connected to the temperature sampling arm through the flexible printed circuit board.
In a second aspect, an embodiment of the present application provides a battery module including the apparatus according to the first aspect.
In a third aspect, the embodiment of the application provides a vehicle, which comprises a vehicle body and the battery module according to the second aspect.
In the scheme, the voltage sampling arm of the voltage sampling device and the temperature sampling arm connected with the temperature sampling device are at least one connecting wire of the main cable, so that the main cable is low in cost and light in weight, the cost and the weight of sampling equipment are reduced, and meanwhile, the process of the main cable is mature, and mass automatic production can be realized. In addition, the sampling device does not need to customize and develop a die for modules with different structures, so that the cost of the whole power battery is reduced.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural diagram of a sampling apparatus for a battery module according to an embodiment of the present disclosure;
fig. 2 is an exemplary application of a sampling device for a battery module provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a voltage sampling arm provided with a fixing component in a folding area according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a voltage sampling apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a temperature sampling apparatus according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another sampling apparatus for a battery module according to an embodiment of the present disclosure.
Detailed Description
The present application will be described in more detail with reference to specific embodiments, it should be understood that the embodiments used herein are merely for explaining the present application and ensuring that those skilled in the art can better understand the technical solution, and are not intended to limit the present application.
In the description of the present application, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, an integral connection, a direct connection, an indirect connection, a physical or mechanical connection, or a combination thereof. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Referring to fig. 1, the sampling apparatus for a battery module according to the present embodiment may include: main cable 11, voltage sampling arm 12, voltage sampling device 13, temperature sampling arm 14 and temperature sampling device 15. The voltage sampling arm 12 and the temperature sampling arm 14 are at least one connection line in the main cable 11, respectively. The voltage sampling device 13 is connected to the voltage sampling arm 12 and the temperature sampling device 15 is connected to the temperature sampling arm 14 for delivering the voltage sampling signal and the temperature sampling signal through the main cable 11. In the scheme, the voltage sampling arm 12 of the voltage sampling device 13 and the temperature sampling arm 14 connected with the temperature sampling device 15 are at least one connecting wire of the main cable, so that the main cable is low in cost and light in weight, the cost and the weight of the sampling equipment are reduced, and meanwhile, the process of the main cable is mature, and mass automatic production can be realized. In addition, the sampling device does not need to customize and develop a die for modules with different structures, so that the cost of the whole power battery is reduced.
In this embodiment, the main cable may be a data cable formed by pressing on an automated equipment production line, and includes a plurality of connecting wires (also referred to as "wires"). The number of the connecting wires of the main cable is arbitrarily selected according to actual needs, for example, the number and the layout of voltage sampling positions and temperature sampling positions to be detected in the battery module can be selected according to the number and the layout of the voltage sampling positions and the temperature sampling positions to be detected in the battery module, so that the connection is facilitated, and the volume of the whole battery module is simplified. In addition, the type of the main Cable is not limited in this embodiment, for example, in one implementation, the main Cable may be a Flexible Flat Cable (FFC), and the FFC may be an FFC that is already in use in the market or another FFC that is produced or designed by using a new technology. The FFC has low cost and mature process, can reduce the cost of sampling equipment, and can realize large-scale automatic production.
In this embodiment, the voltage sampling arm 12 and the temperature sampling arm 14 are both branches of the main cable, and are obtained by processing the main cable, for example, by cutting or punching the main cable, so that the voltage sampling arm 12 and the temperature sampling arm 14 respectively include at least one connection line in the main cable, and are respectively used for transmitting the voltage sampling signal collected by the voltage sampling device 13 and the temperature sampling signal collected by the temperature sampling device.
In this embodiment, the number of the voltage sampling arms 12 and the temperature sampling arms 14 is flexibly set according to the specific structure of the battery module, and may be selected according to the number and layout of voltage sampling positions and temperature sampling positions to be detected in the battery module, for example. For example, as shown in fig. 2, fig. 2 is an exemplary application of the sampling apparatus for a battery module according to the embodiment of the present application, in which the battery module has 12 voltage sampling positions 21 and 2 temperature sampling positions 22, and the voltage sampling positions 21 and the temperature sampling positions 22 are divided into two groups according to the layout of the voltage sampling positions 21 and the temperature sampling positions 22, where each group requires 6 voltage sampling arms 12 and 1 temperature sampling arm 14. In this exemplary application, according to the layout of the voltage sampling location 21 and the temperature sampling location 22, two sampling devices provided by the present embodiment are adopted, and the main cable in each sampling device includes 7 connection lines. It should be understood that, for example, the main cable in each sampling device may include more than 7 connecting lines, and for example, the voltage sampling positions 21 and the temperature sampling positions 22 may also be divided into more than 3 groups, and the sampling devices provided in this embodiment are adopted in more than 3 numbers, accordingly, for each group of the voltage sampling positions 21 and the temperature sampling positions 22, the number of the voltage sampling arms 12 and the temperature sampling arms 14 required to be provided by each sampling device is reduced, and the number of the connecting lines of the main cable of each sampling device is also reduced.
Also, in the present embodiment, the lengths, widths, and arrangement positions of the voltage sampling arm 12 and the temperature sampling arm 14 are also flexibly set according to the specific structure of the battery module. For example, it may be selected according to the layout of voltage sampling positions and temperature sampling positions to be detected in the battery module. With continued reference to fig. 2, the main cable is processed to obtain six voltage sampling arms 12 and one temperature sampling arm 14, and the terminal of each voltage sampling arm 12 and/or temperature sampling arm 14 is located near the corresponding voltage sampling position 21 and/or temperature sampling position 22, where the terminal is understood to be the end of the voltage sampling arm 12 connected to the voltage sampling device 13 and the end of the temperature sampling arm 14 connected to the temperature sampling device 15, respectively.
The present embodiment is not limited to the manner of orienting the voltage sampling arm 12 and/or the temperature sampling arm 14 to the vicinity of the corresponding voltage sampling position and/or temperature sampling position, for example, in one embodiment of the present application, the voltage sampling arm 12 is oriented to the voltage sampling position of the battery module by folding, and the temperature sampling arm 14 is oriented to the temperature sampling position of the battery module by folding. Wherein, the folding positions of the voltage sampling arm 12 and the temperature sampling arm 14 can be determined according to the voltage sampling position and the temperature sampling position of the battery module, respectively. Because can be directional to corresponding voltage sampling position and/or temperature sampling position with voltage sampling arm 12 and temperature sampling arm 14 through folding processing, and then make voltage sampling device 13 of being connected with voltage sampling arm 12 and temperature sampling device 15 of being connected with temperature sampling arm 14 respectively can carry out voltage or temperature to the relevant position, can use existing generation development equipment to different battery module, need not customize the development mould, reduced development cycle, further practiced thrift the cost of this battery module.
In order to prevent stress concentration at the folding of the voltage sampling arm 12 and the temperature sampling arm 14, optionally, as shown in fig. 3, in an embodiment of the present application, the folding regions of the voltage sampling arm 12 and the temperature sampling arm 14 are respectively provided with a fixing part 16. The fixing component 16 may be a foam, a double-sided tape, or other fixing component 16, which is not limited in this embodiment. The securing member 16 may be disposed in the folded region of the respective voltage sampling arm 12 and/or the respective temperature sampling arm 14 by any suitable means, such as by bonding, thereby preventing fatigue cracking in the folded region of the voltage sampling arm 12 and/or the temperature sampling arm 14 and extending the useful life of the voltage sampling arm 12 and/or the temperature sampling arm 14.
In this embodiment, the type of the voltage sampling device 13 is not limited, and two implementation manners are exemplified here.
Alternatively, as shown in fig. 4, in one implementation manner of the present application, the voltage sampling device 13 is a voltage sampling terminal 13a, one end of the voltage sampling terminal 13a is connected to the voltage sampling arm 12, and the other end of the voltage sampling terminal 13a is connected to a voltage sampling position of the battery module. The connection mode of the voltage sampling terminal 13a with the voltage sampling arm 12 and the voltage sampling position is not limited in this implementation, as long as it is ensured that the voltage sampling terminal 13a has reliable electrical connection and mechanical connection with the voltage sampling arm 12 and the voltage sampling position, respectively.
For the connection of the voltage sampling terminal 131 and the voltage sampling arm 12, for example, in one implementation, the wing at the tail of the voltage sampling terminal 131 and the voltage sampling arm 12 are formed by crimping or welding a CRIMP, and the size and shape of the wing of the voltage sampling terminal 131 can be adjusted according to the width of the voltage sampling arm 12, so that the voltage sampling terminal 131 and the voltage sampling arm 12 have reliable electrical connection and mechanical property. Since the voltage sampling arm 12 is processed from the main cable and includes at least one connection line of the main cable, the size and shape of the wing at the tail of the voltage sampling terminal 131 can be adjusted according to the width of the core of the connection line of the main cable.
For the connection of the voltage sampling terminal 131 to the voltage sampling location, for example, in one implementation, a pad is provided on the voltage sampling terminal 131, and accordingly, a pad is provided at the voltage sampling location, and the voltage sampling terminal 131 may be soldered to the voltage sampling location by soldering, so that the voltage sampling terminal 131 is fixedly connected and electrically connected with the voltage sampling location. For example, when the voltage sampling position is a bus bar of the battery module, the voltage sampling terminal 131 is welded to the bus bar of the battery module by laser welding. It should be understood that the bus bar is only one example of a voltage sampling location, which may be any suitable location capable of obtaining the voltage of the cells in the battery module. In another implementation, the voltage sampling terminal 131 may be fixedly connected and electrically connected with the voltage sampling location by riveting or screwing.
Optionally, in an embodiment of the present application, the voltage sampling device 13 is a wire core obtained by removing an insulating layer at the end of the voltage sampling arm 12, and the wire core is connected to the voltage sampling position of the battery module. The end of the voltage sampling arm 12 refers to an end of the voltage sampling arm 12 for connecting to the voltage sampling device 13. Because the voltage sampling arm 12 is obtained by processing the main cable, which is at least one connecting wire of the main cable, a wire core with a certain length stripped at the tail end of the voltage sampling arm 12 is used as the voltage sampling device 13 for sampling the voltage of the voltage sampling position of the battery module. In this implementation, the connection between the core and the voltage sampling location is not limited, as long as reliable mechanical and electrical connection between the core and the voltage sampling device 13 is ensured. For example, the wire core may be connected to the voltage sampling location by soldering or conductive glue. Taking the voltage sampling position as the bus of the battery module as an example, the wire core can be directly connected with the bus of the battery module through welding or conductive adhesive.
In this embodiment, the type of the temperature sampling device 15 is not limited, and two implementation manners are exemplified here.
Alternatively, as shown in fig. 5, in an embodiment of the present application, the temperature sampling device 15 includes an NTC thermistor 151 and a Flexible Printed Circuit (PFC) 152, and the NTC thermistor 151 is connected to the temperature sampling arm 14 through the PFC 152. In this embodiment, the NTC thermistor 151 may be mounted on the PFC152, and the PFC152 is connected to the temperature sampling arm 14, so that the NTC thermistor 151 is connected to the temperature sampling arm 14 through the PFC152, and the temperature sampling signal is transmitted through the temperature sampling arm 14. The thermistor NTC 151 may be attached to the PFC152 by a (Surface Mount Technology, SMT) technique or other welding technique, or may be connected to the PFC152 in other ways, which is not limited in this embodiment. PFC152 may be connected to temperature sampling arm 14 in any suitable manner, for example, as long as a reliable mechanical and electrical connection of PFC152 to temperature sampling arm 14 is achieved. For example, a pad region may be provided at the location where PFC152 is connected to temperature sampling arm 14, and correspondingly, a pad region may also be provided at the location where temperature sampling arm 14 is connected to PFC152, and PFC152 and temperature sampling arm 14 are connected by soldering, for example, a thermocompression bonding process. It should be understood that this is merely exemplary and that other techniques, such as using conductive adhesive to connect PFC152 to temperature sampling arm 14, may be used as desired.
Optionally, in another embodiment of the present application, the temperature sampling device 15 is a negative temperature coefficient NTC thermistor, which is connected to the temperature sampling arm 14. Wherein, NTC fixes the corresponding temperature sampling position who sets up at battery module to the collection of temperature signal. The NTC may be connected to the temperature sampling arm 14 using SMT technology or other welding technology for temperature signal acquisition. It should be understood that the NTC may be connected to the temperature sampling arm 14 in other manners, such as being connected to the temperature sampling arm 14 through a conductive adhesive, as long as the NTC can be reliably connected to the temperature sampling arm 14 mechanically and electrically, which is not limited in this embodiment.
In order to prevent the NTC thermistor from being affected by moisture ingress, optionally, a protective adhesive may be coated on the NTC surface of the thermistor.
Optionally, referring to fig. 6, in an embodiment of the present application, the sampling device further includes an information transmission interface 17, and the main cable 11 is connected with the control device through the information transmission interface 17 for transmitting the voltage sampling signal and the temperature sampling signal to the control device. Specifically, the information transmission interface 17 is used for connecting the main cable 11 with the control device, so that the voltage sampling signal and the temperature sampling signal transmitted through the main cable 11 are transmitted to the control device and are analyzed and processed by the control device. The control device may be a Battery Management Unit (BMU) of the vehicle, a Central Management Unit (CMU) or another control Unit of the vehicle, and the main cable is connected to the control device through the information transmission interface 17, so that the main cable can be detachably connected to the control device, and replacement of the sampling device during maintenance is facilitated. Alternatively, the information transmission interface 17 may be a cable connector or a gold finger, and the main cable may be connected to the PCB of the control device through the cable connector or the gold finger, and transmit the voltage sampling signal and the temperature sampling signal to the control device for processing.
It should be noted that, in this embodiment, the information transmission interface 17 is not necessarily provided, but the main cable may be directly connected to the control device, for example, the main cable is directly soldered to a PCB of the control device, so as to implement the connection between the main cable and the control device, thereby simplifying the connection between the main cable and the control device and reducing the cost of the sampling device.
It should be noted that the sampling device for a battery module provided in this embodiment may be fixed on a CCS assembly of the battery module by a double-sided tape or a thermal riveting manner, or other structures of the battery module, which is not limited in this embodiment.
It should be noted that the sampling device for the battery module provided in this embodiment is not limited to be arranged in the power battery module, and may be arranged on other storage batteries or energy storage systems, which is not limited in this embodiment.
Example two
The application provides a battery module, including embodiment one provides a sampling equipment for battery module. Wherein, this sampling equipment can install in the battery module, samples the temperature and the voltage of the electric core in the battery module. For example, the sampling device may be fixed to the CCS assembly of the battery module by means of hot riveting, or may be fixed to the battery module by means of double-sided tape or other methods, which is not limited in this embodiment. The battery module can be applied to plug-in hybrid vehicles and pure electric vehicles.
EXAMPLE III
The embodiment of the application provides a vehicle, and the vehicle comprises a vehicle body and the battery module provided by the second embodiment. The battery module is an energy storage part of the vehicle and provides electric power for the vehicle body. The vehicle may be a plug-in hybrid vehicle or a pure electric vehicle.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (11)

1. A sampling device for a battery module, comprising: the temperature sampling device comprises a main cable, a voltage sampling arm, a voltage sampling device, a temperature sampling arm and a temperature sampling device, wherein the voltage sampling arm and the temperature sampling arm are respectively at least one connecting wire in the main cable;
the voltage sampling device is connected with the voltage sampling arm, and the temperature sampling device is connected with the temperature sampling arm for transmitting a voltage sampling signal and a temperature sampling signal through the main cable.
2. The apparatus of claim 1, further comprising an information transmission interface through which the main cable is connected with a control device for communicating the voltage sampling signal and the temperature sampling signal to the control device.
3. The apparatus of claim 1, wherein the voltage sampling arm is oriented by folding to a voltage sampling position of the battery module and the temperature sampling arm is oriented by folding to a temperature sampling position of the battery module.
4. The apparatus of claim 3, wherein the folded regions of the voltage sampling arm and the temperature sampling arm are respectively provided with a fixing member.
5. The apparatus of claim 1, wherein the voltage sampling device is a voltage sampling terminal, one end of the voltage sampling terminal is connected to the voltage sampling arm, and the other end of the voltage sampling terminal is connected to a voltage sampling position of the battery module.
6. The apparatus of claim 1, wherein the voltage sampling device is a wire core with an insulating layer removed from the end of the voltage sampling arm, and the wire core is connected to the voltage sampling position of the battery module.
7. The apparatus of claim 1, wherein the temperature sampling device is a Negative Temperature Coefficient (NTC) thermistor directly connected to the temperature sampling arm.
8. The apparatus of claim 1, wherein the temperature sampling device comprises an NTC thermistor and a flexible printed circuit board, the NTC thermistor being connected to the temperature sampling arm through the flexible printed circuit board.
9. The apparatus of claim 2, wherein the information transfer interface is a cable connector or a gold finger.
10. A battery module, characterized in that it comprises a device according to claims 1-9.
11. A vehicle characterized by comprising a vehicle body and the battery module according to claim 10.
CN202010779244.XA 2020-08-05 2020-08-05 Vehicle, battery module and sampling equipment for battery module Pending CN114069061A (en)

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Application Number Priority Date Filing Date Title
CN202010779244.XA CN114069061A (en) 2020-08-05 2020-08-05 Vehicle, battery module and sampling equipment for battery module

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