Sampling assembly, battery and electric equipment

Abstract

The utility model discloses a sampling assembly, a battery and electric equipment, and belongs to the technical field of batteries. The sampling assembly comprises a first flexible circuit board, a second flexible circuit board, a sampling unit and a conductive piece. The first flexible circuit board comprises a first insulating part and a first conductor part, and the first conductor part is arranged in the first insulating part. The second flexible circuit board comprises a second insulating part and a second conductor part, and the second conductor part is arranged in the second insulating part. The sampling unit is arranged on the second flexible circuit board. The conductive member is used for electrically connecting the first flexible circuit board and the second flexible circuit board. Wherein the conductive part comprises a main body, a first pin and a second pin, the first pin and the second pin extend out of the main body, the first pin penetrates through the first flexible circuit board and is electrically connected with the first conductor part, and the second pin penetrates through the second flexible circuit board and is electrically connected with the second conductor part. The arrangement of the sampling assembly is beneficial to reducing the maintenance cost of the battery.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a sampling component, a battery and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] How to reduce the maintenance cost of batteries is an urgent problem to be solved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a sampling component, a battery and an electrical device, which can reduce the maintenance cost of the battery.

[0005] In a first aspect, the present application provides a sampling component, including a first flexible circuit board, a second flexible circuit board, a sampling unit and a conductive member. The first flexible circuit board includes a first insulating portion and a first conductor portion, and the first conductor portion is arranged in the first insulating portion. The second flexible circuit board includes a second insulating portion and a second conductor portion, and the second conductor portion is arranged in the second insulating portion. The sampling unit is arranged on the second flexible circuit board. The conductive member is used to electrically connect the first flexible circuit board and the second flexible circuit board. Among them, the conductive member includes a main body, a first pin and a second pin, the first pin and the second pin both extend from the main body, the first pin pierces the first flexible circuit board and is electrically connected to the first conductor portion, and the second pin pierces the second flexible circuit board and is electrically connected to the second conductor portion.

[0006] In the technical solution of the embodiment of the present application, the first flexible circuit board and the second flexible circuit board are electrically connected by crimping the first pin and the second pin of the conductive member, which reduces the difficulty of assembling the sampling component. When the sampling unit needs maintenance, the sampling unit and the first flexible circuit board can be separated by simply loosening the first pin and the second pin, which reduces the difficulty of separating the sampling unit and the first flexible circuit board and also reduces the risk of damage to the first flexible circuit board during maintenance. This is conducive to reducing the maintenance cost of the battery.

[0007] In one or more embodiments of the first aspect, the first conductor portion is provided with a first through hole for the first pin to pass through, and a portion of the first pin passing through the first through hole is bent toward the first conductor portion to form a first bent portion.

[0008] In the above solution, the first through hole can facilitate the pre-positioning of the first pin, reducing the difficulty of assembling the conductive member and the first flexible circuit board. The formation of the first curved portion is conducive to improving the connection strength and conductive performance of the first pin and the first conductor.

[0009] In one or more embodiments of the first aspect, the first insulating portion includes a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is disposed between the first insulating layer and the second insulating layer. The first insulating layer is punctured by the first pin to form a first puncture hole, and the second insulating layer is punctured by the first pin to form a second puncture hole, and the first puncture hole and the second puncture hole are both aligned with the first penetration hole.

[0010] In the above scheme, the conductive part and the first flexible circuit board are connected by piercing the first insulating layer and the second insulating layer with the first needle. On the one hand, the risk of damage to the first conductor part due to leakage of the first conductor part can be reduced. On the other hand, the process of drilling holes and punching windows in the first insulating layer and / or the second insulating layer is omitted, thereby improving the production efficiency of the battery. On still another hand, when maintaining the sampling component, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery.

[0011] In one or more embodiments of the first aspect, the first insulating portion includes a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is disposed between the first insulating layer and the second insulating layer. The first insulating layer is provided with a first window, and the first penetration hole is located in an area of ​​the first conductor portion exposed by the first window. The second insulating layer is punctured by the first pin to form a second puncture hole, and the second puncture hole is aligned with the first penetration hole.

[0012] In the above solution, opening the first window in the first insulating layer is beneficial to increasing the contact area between the main body and the first conductor part, thereby facilitating improving the conductive performance of the conductive member and the first flexible circuit board.

[0013] In one or more embodiments of the first aspect, the first bent portion pierces the second insulating layer to contact the first conductor portion.

[0014] In the above solution, the first bent portion contacts the first conductor portion, which can further improve the conductivity of the conductive element and the first flexible circuit board.

[0015] In one or more embodiments of the first aspect, the first insulating portion includes a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is disposed between the first insulating layer and the second insulating layer. The first insulating layer is punctured by the first pin to form a first puncture hole, and the first puncture hole is aligned with the first penetration hole. The second insulating layer is provided with a second window, and the first penetration hole is located in an area of ​​the first conductor portion exposed by the second window.

[0016] In the above solution, the second insulating layer opens a second window, which is beneficial to increasing the contact area between the first bending portion and the first conductor portion after the first pin is crimped, and is beneficial to improving the conductive performance of the conductive member and the first flexible circuit board.

[0017] In one or more embodiments of the first aspect, the first bent portion contacts a region of the first conductor portion exposed by the second window.

[0018] In the above solution, the first bent portion contacts the area of ​​the first conductor portion exposed by the second window, which can further improve the conductivity of the conductive element and the first flexible circuit board.

[0019] In one or more embodiments of the first aspect, the second conductor portion is provided with a second through hole for the second pin to pass through, and the portion of the second pin passing through the second through hole is bent toward the second conductor portion to form a second bent portion.

[0020] In the above solution, the second through hole can facilitate the pre-positioning of the second pin, reducing the difficulty of assembling the conductive member and the second flexible circuit board. The formation of the second curved portion is conducive to improving the connection strength and conductive performance between the second pin and the second conductor.

[0021] In one or more embodiments of the first aspect, the second insulating portion includes a third insulating layer and a fourth insulating layer, the third insulating layer faces the main body, the fourth insulating layer faces away from the main body, and the second conductor portion is disposed between the third insulating layer and the fourth insulating layer. The third insulating layer is punctured by the second pin to form a third puncture hole, and the fourth insulating layer is punctured by the second pin to form a fourth puncture hole, and the third puncture hole and the fourth puncture hole are both aligned with the second penetration hole.

[0022] In the above scheme, the conductive part and the second flexible circuit board are connected in a manner of piercing the third insulating layer and the fourth insulating layer with the second pin. On the one hand, the risk of damage to the second conductor part due to leakage of the second conductor part can be reduced. On the other hand, the process of drilling holes and punching windows in the third insulating layer and / or the fourth insulating layer is omitted, thereby improving the production efficiency of the battery. On still another hand, when maintaining the sampling component, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery.

[0023] In one or more embodiments of the first aspect, the second bent portion pierces the fourth insulating layer to contact the second conductor portion.

[0024] In the above solution, the second bent portion contacts the second conductor portion, which is beneficial to improving the conductivity of the conductive member and the second flexible circuit board.

[0025] In one or more embodiments of the first aspect, the sampling unit is a temperature sensor.

[0026] In the above solution, the temperature sensor generally requires two conductors to be electrically connected to the first flexible circuit. The method of electrically connecting the first flexible circuit board and the second flexible circuit board using a conductive member including a first pin and a second pin can significantly reduce the maintenance cost of the battery.

[0027] In a second aspect, the present application provides a battery, which includes a battery cell and a sampling component in one or more embodiments of the first aspect, and the sampling component is used to collect information of the battery cell.

[0028] In the above solution, since the battery includes the sampling assembly in one or more embodiments of the first aspect, the battery has a lower maintenance cost.

[0029] In a third aspect, the present application provides an electrical device, which includes the battery in one or more embodiments of the second aspect, and the battery is used to provide electrical energy.

[0030] In the above solution, since the electrical equipment includes the battery in one or more embodiments of the second aspect, the electrical equipment has a lower maintenance cost.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0034] Figure 2 An exploded view of a battery according to some embodiments of the present application;

[0035] Figure 3 A schematic diagram of a partial structure of a sampling assembly in some embodiments of the present application;

[0036] Figure 4 A cross-sectional view of a portion of the structure of a sampling assembly according to some embodiments of the present application;

[0037] Figure 5 An isometric view of a conductive member according to some embodiments of the present application;

[0038] Figure 6 For this application Figure 4 A partial enlarged view of the middle A;

[0039] Figure 7 It is a cross-sectional view of a part of the structure of the sampling assembly of some other embodiments of the present application;

[0040] Figure 8 It is a cross-sectional view of a part of the structure of the sampling assembly of some other embodiments of the present application;

[0041] Fig. 9 A cross-sectional view of a portion of the structure of a sampling assembly according to some further embodiments of the present application;

[0042] Fig.10 For this application Figure 4 A partial enlarged view of point B in the middle.

[0043] The reference numerals in the specific implementation manner are as follows:

[0044] 1000-vehicle; 200-controller; 300-motor; 100-battery; 11-housing; 111-first part; 112-second part; 12-battery cell; 3-sampling assembly; 31-first flexible circuit board; 311-first insulating part; 3111-first insulating layer; 31111-first puncture hole; 31112-first window; 3112-second insulating layer; 31121-second puncture hole; 31122-second window; 312-first Conductor part; 3121-first penetration hole; 32-second flexible circuit board; 321-second insulating part; 3211-third insulating layer; 32111-third puncture hole; 3212-fourth insulating layer; 32121-fourth puncture hole; 322-second conductor part; 3221-second penetration hole; 33-sampling unit; 34-conductive member; 341-first pin; 3411-first bending part; 342-second pin; 3421-second bending part; 343-main body. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0050] In the present application, battery cells may include but are not limited to lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. The shape of the battery cell may include but is not limited to a cylinder, a flat body, a rectangular parallelepiped or other shapes, etc. The battery cell may include but is not limited to a cylindrical battery cell, a square battery cell, a soft-pack battery cell and a blade battery cell according to the packaging method.

[0051] In some high-power applications such as electric vehicles, the application of batteries includes three levels: battery cells, battery modules and batteries. The battery module is formed by electrically connecting a certain number of battery cells together and placing them in a frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery refers to the final state of the battery system installed in the electric vehicle. The battery mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. The battery generally includes a casing for encapsulating one or more battery cells. The casing can reduce the risk of liquid or other foreign matter affecting the charging or discharging of the battery cells.

[0052] The following will mainly focus on the rectangular battery cell. It should be understood that the embodiments described below are also applicable to cylindrical battery cells, soft-pack battery cells, or blade battery cells in some aspects.

[0053] A sampling component and a battery management system are generally set up inside the battery. The sampling component will sample the status of each battery cell (such as temperature, voltage, etc.), and the battery management system will adjust the battery as a whole according to the status information of the battery cell obtained by the sampling component, so as to manage the charging and discharging of the battery and keep the battery system running in a stable state.

[0054] The usual sampling assembly includes a flexible circuit board and multiple sampling units, and the sampling units are generally sensing elements, such as thermistors, etc. Thermistors are generally integrated on thermal circuit boards to collect temperature information of battery cells. Generally, multiple thermistors are arranged on a circuit board.

[0055] Flexible circuit boards are extremely flexible printed circuits that are formed by embedding circuit designs on thin and bendable plastic sheets. They are particularly suitable for applications where a large number of precision components are stacked in narrow and limited spaces, such as in battery boxes.

[0056] The development of battery technology must take into account many design factors at the same time, such as reliability, cycle life, discharge capacity, charge and discharge rate, energy density and other performance parameters. In addition, the maintenance cost of the battery must also be considered.

[0057] A typical sampling assembly includes a larger flexible circuit board, on which components such as connectors, voltage sampling units, and thermistors are integrated. Taking the assembly of thermistors as an example, the thermistor will first be soldered to a small flexible circuit board by reflow soldering, and then the wires in the small flexible circuit board will be soldered to the larger flexible circuit board for assembly. When the thermistor fails and needs to be replaced, it is necessary to scrape off the wires of the small flexible circuit board and the insulating glue on the larger flexible circuit board. During the scraping operation, the smaller reflow soldering pads are easily damaged by the scraper. If the pads are damaged, the remaining pads can only connect to an area that is not sufficient to form a stable connection between the thermistor and the larger flexible circuit board. At this point, the entire larger flexible circuit board and the connectors, voltage sampling units, etc. integrated in the flexible circuit board will be scrapped, and the sampling assembly needs to be replaced as a whole, with high maintenance costs.

[0058] In view of this, the present application provides a sampling assembly, including a first flexible circuit board, a second flexible circuit board, a sampling unit and a conductive member. The first flexible circuit board includes a first insulating portion and a first conductor portion, and the first conductor portion is arranged in the first insulating portion. The second flexible circuit board includes a second insulating portion and a second conductor portion, and the second conductor portion is arranged in the second insulating portion. The sampling unit is arranged on the second flexible circuit board. The conductive member is used to electrically connect the first flexible circuit board and the second flexible circuit board. Among them, the conductive member includes a main body, a first pin and a second pin, and the first pin and the second pin both extend from the main body. The first pin pierces the first flexible circuit board and is electrically connected to the first conductor portion, and the second pin pierces the second flexible circuit board and is electrically connected to the second conductor portion. The first flexible circuit board and the second flexible circuit board are electrically connected by crimping the first pin and the second pin of the conductive member, which reduces the difficulty of assembling the sampling assembly. When the sampling unit needs maintenance, the sampling unit and the first flexible circuit board can be separated by only loosening the first pin and the second pin, which reduces the difficulty of separating the sampling unit from the first flexible circuit board and can also reduce the risk of damage to the first flexible circuit board during maintenance. It is conducive to reducing the maintenance cost of the battery.

[0059] The technical solutions described in the embodiments of the present application are applicable to batteries, electrical equipment using batteries, medical equipment, wearable devices, etc.

[0060] Medical devices include pacemakers, blood glucose meters, blood pressure monitors, etc. Wearable devices include smart watches, smart bracelets, smart glasses, etc.

[0061] The following description will be made using batteries and sampling components in electrical equipment using batteries as examples.

[0062] Electrical equipment using batteries include, but are not limited to, electric vehicles, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.

[0063] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0064] For example, Figure 1The schematic diagram of the structure of the vehicle 1000 of some embodiments of the present application, the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The motor 300, the controller 200 and the battery 100 can be arranged inside the vehicle 1000, and the controller 200 is used to control the battery 100 to power the motor 300. For example, the battery 100 can be arranged at the bottom or the front or the rear of the vehicle 1000. The battery 100 can be used for powering the vehicle 1000, for example, the battery 100 can be used as the operating power supply of the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power demand of the vehicle 1000 during startup, navigation and operation. In another embodiment of the present application, the battery 100 can not only be used as the operating power supply of the vehicle 1000, but also as the driving power supply of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] In order to meet different power requirements, the battery 100 may include a plurality of battery cells 12, wherein the plurality of battery cells 12 may be connected in series, in parallel, or in a hybrid connection, wherein the hybrid connection refers to a mixture of series and parallel connections. The battery 100 may also be referred to as a battery pack. Optionally, a plurality of battery cells 12 may first be connected in series, in parallel, or in a hybrid connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in a hybrid connection to form the battery 100. In other words, a plurality of battery cells 12 may directly form the battery 100, or they may first form a battery module, and then the battery module may form the battery 100.

[0066] For example, see Figure 2 , Figure 2 1 is an exploded view of a battery 100 in some embodiments of the present application. The battery 100 may include a plurality of battery cells 12. The battery 100 may also include a housing 11. The interior of the housing 11 is a hollow structure. The plurality of battery cells 12 are accommodated in the housing 11. Figure 2 As shown, they are respectively referred to as the first part 111 and the second part 112, and the first part 111 and the second part 112 are buckled together. The shapes of the first part 111 and the second part 112 can be determined according to the shapes of the combination of multiple battery cells 12, and the first part 111 and the second part 112 can both have an opening. For example, the first part 111 and the second part 112 can both be hollow cuboids and each has only one face as an open face, the opening of the first part 111 and the opening of the second part 112 are arranged opposite to each other, and the first part 111 and the second part 112 are buckled together to form a box body 11 with a closed chamber. After the multiple battery cells 12 are connected in parallel, in series, or in a mixed combination, they are placed in the box body 11 formed by the buckling of the first part 111 and the second part 112.

[0067] Optionally, the battery 100 may also include other structures, which are not described one by one here. For example, the battery 100 may also include a busbar component, which is used to realize electrical connection between multiple battery cells 12, such as parallel connection, series connection or mixed connection. Specifically, the busbar component can realize electrical connection between the battery cells 12 by connecting the electrode terminals of the battery cells 12. Furthermore, the busbar component can be fixed to the electrode terminals of the battery cells 12 by welding. The electrical energy of multiple battery cells 12 can be further led out through the box 11 through a conductive mechanism. For example, the battery 100 may also include a sampling component 3, which generally includes a connector and a flexible circuit board, and a sampling unit 33 is electrically connected to the flexible circuit board. The sampling unit 33 is used to collect information of the battery cell 12, such as temperature, voltage and other information. In some embodiments, the sampling component 3 is arranged on the busbar component.

[0068] According to different power requirements, the number of battery cells 12 can be set to any value. Multiple battery cells 12 can be connected in series, parallel or hybrid to achieve a larger capacity or power. Since the number of battery cells 12 included in each battery 100 may be large, for ease of installation, the battery cells 12 can be grouped, and each group of battery cells 12 constitutes a battery module. The number of battery cells 12 included in the battery module is not limited and can be set according to demand. The battery 100 may include multiple battery modules, which can be connected in series, parallel or hybrid.

[0069] According to some embodiments of this application, please refer to Figure 3-Figure 5 The present application provides a sampling assembly 3, comprising a first flexible circuit board 31, a second flexible circuit board 32, a sampling unit 33 and a conductive member 34. The first flexible circuit board 31 comprises a first insulating portion 311 and a first conductor portion 312, wherein the first conductor portion 312 is disposed in the first insulating portion 311. The second flexible circuit board 32 comprises a second insulating portion 321 and a second conductor portion 322, wherein the second conductor portion 322 is disposed in the second insulating portion 321. The sampling unit 33 is disposed on the second flexible circuit board 32. The conductive member 34 is used to electrically connect the first flexible circuit board 31 and the second flexible circuit board 32. The conductive member 34 comprises a main body 343, a first pin 341 and a second pin 342, wherein the first pin 341 and the second pin 342 both extend from the main body 343, the first pin 341 pierces the first flexible circuit board 31 and is electrically connected to the first conductor portion 312, and the second pin 342 pierces the second flexible circuit board 32 and is electrically connected to the second conductor portion 322.

[0070] The first flexible circuit board 31 generally integrates multiple components, such as a temperature sensor, a voltage sensor, a connector, etc. The temperature sensor is used to collect the temperature signal of the battery cell 12, the voltage sensor is used to collect the voltage signal of the battery cell 12, and the connector is used to output the signal collected by the sampling component 3. In the battery 100, the collected signals are generally transmitted to the battery management system for centralized processing.

[0071] The sampling unit 33 may include a temperature sensor such as a thermistor, a voltage sensor such as a nickel sheet, etc. In some embodiments, the sampling unit 33 is a voltage sensor, and the voltage sensor includes a nickel sheet, one end of the nickel sheet contacts the electrode terminal of the battery cell 12, and the other end of the nickel sheet is electrically connected to the first conductive part by welding or crimping. In other words, the nickel sheet has only one lead end.

[0072] The material of the first insulating portion 311 and the second insulating portion 321 may include, but is not limited to, polyimide or polyester film.

[0073] The material of the first conductor portion 312 and the second conductor portion 322 may include copper, silver, aluminum, etc.

[0074] The material of the conductive member 34 may include copper, silver, aluminum, etc.

[0075] The sampling unit 33 is arranged on the second flexible circuit board 32, which means that the sampling unit 33 is electrically connected to the second conductor portion 322. Since the conductive member 34 is electrically connected to the first flexible circuit board 31 and the second flexible circuit board 32, the signal collected by the sampling unit 33 can be transmitted to the first flexible circuit board 31 through the second flexible circuit board 32 and the conductive member 34.

[0076] There may be a plurality of first pins 341, and in some embodiments, the plurality of first pins 341 are arranged at intervals. There may be a plurality of second pins 342, and in some embodiments, the plurality of second pins 342 are arranged at intervals.

[0077] The ends of the first pin 341 and the second pin 342 are generally sharp.

[0078] During the assembly process of the conductive member 34, a certain pressure may be applied to the main body 343, so that the first pin 341 pierces the first flexible circuit board 31, and the second pin 342 pierces the second flexible circuit board 32. In some embodiments, after the first pin 341 pierces the first flexible circuit board 31, a portion of the first pin 341 contacts the first conductor portion 312 to form an electrical connection, and after the second pin 342 pierces the second flexible circuit board 32, a portion of the second pin 342 contacts the second conductor portion 322 to form an electrical connection.

[0079] Taking the conductive member 34 as an example of a temperature sensor, the temperature sensor includes a thermistor, and the two lead ends of the thermistor can also be understood as the positive and negative electrodes of the thermistor are respectively welded to the first ends of the two second conductor parts 322 in the second flexible circuit board 32, and the second ends of the two second conductor parts 322 are crimped to the second pin 342 of the conductive member 34, and the first pin 341 of the conductive member 34 is crimped to the first conductor part 312 in the first flexible circuit board 31. When the temperature sensor needs to be replaced, the conductive member 34, the first flexible circuit board 31 and the second flexible circuit board 32 can be separated by straightening the bent first pin 341 and the second pin 342, and then the second flexible circuit board 32 and the sampling unit 33 can be replaced as a whole. The replaced second flexible circuit board 32 and sampling unit 33 can be electrically connected to the first flexible circuit board 31 again through a new conductive member 34 or an old conductive member 34 by puncturing and crimping; when the temperature sensor needs to be replaced, the conductive member 34 can be cut off to only separate the second flexible circuit board 32 and the conductive member 34. When the second flexible circuit board 32 and the sampling unit 33 are replaced, a new second pin 342 can be re-welded on the conductive member 34, and then the conductive member 34 and the second flexible circuit board 32 can be electrically connected by puncturing and crimping. No matter which of the above methods is used to maintain the sampling assembly 3, the first flexible circuit board 31 will not be damaged.

[0080] In the technical solution of the embodiment of the present application, the first flexible circuit board 31 and the second flexible circuit board 32 are electrically connected by crimping the first pin 341 and the second pin 342 of the conductive member 34, which reduces the difficulty of assembling the sampling assembly 3. When the sampling unit 33 needs maintenance, the sampling unit 33 and the first flexible circuit board 31 can be separated by simply loosening the first pin 341 and the second pin 342, which reduces the difficulty of separating the sampling unit 33 from the first flexible circuit board 31 and also reduces the risk of damage to the first flexible circuit board 31 during maintenance. This is beneficial to reducing the maintenance cost of the battery 100.

[0081] According to some embodiments of this application, please refer to Figure 4-Figure 6 The first conductor portion 312 defines a first through hole 3121 for the first pin 341 to pass through, and a portion of the first pin 341 passing through the first through hole 3121 is bent toward the first conductor portion 312 to form a first bent portion 3411 .

[0082] The first penetration hole 3121 may be pre-processed when the first flexible circuit board 31 is produced.

[0083] In some embodiments, the first bent portion 3411 can be pressed against the side of the first insulating portion 311 away from the main body 343. Such a setting means that the main body 343 is fixed to the first flexible circuit board 31. In other embodiments, the main body 343 is in contact with the first flexible circuit board 31. The setting of the first bent portion 3411 can make the conductive member 34 fit tightly to the first flexible circuit board 31, and the first flexible circuit board 31 and the conductive member 34 have a higher connection strength.

[0084] In some embodiments, the first bent portion 3411 pierces the first insulating portion 311 twice to contact the first conductor portion 312 away from the main body 343, which is equivalent to increasing the contact area between the conductive member 34 and the first conductor portion 312, thereby improving the conductive performance of the conductive member 34 and the first flexible circuit board 31.

[0085] In the above solution, the first through hole 3121 can facilitate the pre-positioning of the first pin 341, reducing the difficulty of assembling the conductive member 34 and the first flexible circuit board 31. The formation of the first bent portion 3411 is conducive to improving the connection strength and conductive performance between the first pin 341 and the first conductor portion 312.

[0086] According to some embodiments of this application, please refer to Figure 3 and Figure 7 The first insulating portion 311 includes a first insulating layer 3111 and a second insulating layer 3112. The first insulating layer 3111 faces the main body 343, and the second insulating layer 3112 faces away from the main body 343. The first conductor portion 312 is disposed between the first insulating layer 3111 and the second insulating layer 3112. The first insulating layer 3111 is pierced by the first pin 341 to form a first piercing hole 31111, and the second insulating layer 3112 is pierced by the first pin 341 to form a second piercing hole 31121. The first piercing hole 31111 and the second piercing hole 31121 are both aligned with the first penetration hole 3121.

[0087] The first puncture hole 31111 and the second puncture hole 31121 are both formed by the puncturing action. In other words, in the process of completing the assembly of the conductive member 34 and the first flexible circuit board 31, the first insulating layer 3111 and the second insulating layer 3112 are not pre-opened at the assembly position of the above two, or the first flexible circuit board 31 does not have a window. The first flexible circuit board 31 does not have a window, so there is no need to consider the expansion and contraction mismatch, fitting deviation and other problems between the first insulating layer 3111 and the second insulating layer 3112 and the first conductor part 312. At the same time, the first conductor part 312 is not exposed, so the risk of the first conductor part 312 being scratched, dirty, and oxidized is low. At the same time, whether it is the assembly or maintenance of the second flexible circuit board 32 and the sampling unit 33 with the first flexible circuit board 31, there is no need to go through the process of drilling, punching and cleaning the window position.

[0088] The first puncture hole 31111 and the second puncture hole 31121 are aligned with the first penetration hole 3121, which reduces the difficulty of puncturing the first stitch 341 and the second stitch 342, that is, reduces the difficulty of assembly.

[0089] In the above scheme, the conductive member 34 and the first flexible circuit board 31 are connected by piercing the first insulating layer 3111 and the second insulating layer 3112 with the first pin 341. On the one hand, the risk of the first conductor portion 312 being damaged due to leakage can be reduced. On the other hand, the process of drilling holes and punching windows in the first insulating layer 3111 and / or the second insulating layer 3112 is omitted, thereby improving the production efficiency of the battery 100. On another hand, when the sampling component 3 is maintained, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery 100.

[0090] According to some embodiments of this application, please refer to Figure 3 and Figure 8 The first insulating portion 311 includes a first insulating layer 3111 and a second insulating layer 3112. The first insulating layer 3111 faces the main body 343, and the second insulating layer 3112 faces away from the main body 343. The first conductor portion 312 is disposed between the first insulating layer 3111 and the second insulating layer 3112. The first insulating layer 3111 is provided with a first window 31112, and the first through hole 3121 is located in the area of ​​the first conductor portion 312 exposed by the first window 31112. The second insulating layer 3112 is pierced by the first pin 341 to form a second pierced hole 31121, and the second pierced hole 31121 is aligned with the first through hole 3121.

[0091] The first window 31112 may be formed by punching when producing the first flexible circuit board 31 .

[0092] The provision of the first window 31112 enables the surface of most of the main body 343 facing the first conductor portion 312 to fit in with the first conductor portion 312 , thereby increasing the contact area between the conductive element 34 and the first conductor portion 312 .

[0093] In the above solution, opening the first window 31112 in the first insulating layer 3111 is beneficial to increasing the contact area between the main body 343 and the first conductor portion 312 , thereby facilitating improving the conductivity of the conductive member 34 and the first flexible circuit board 31 .

[0094] According to some embodiments of this application, please refer to Figure 3 and Fig. 9 The first bent portion 3411 pierces the second insulating layer 3112 to contact the first conductor portion 312 .

[0095] The first bent portion 3411 pierces the second insulating layer 3112 to contact the first conductor portion 312, which means that in addition to the part of the first pin 341 passing through the first conductor portion 312 that may contact the first conductor portion 312, and / or the main body 343 contacts the first conductor portion 312, the first bent portion 3411 also contacts the first conductor portion 312, further increasing the contact area between the conductive member 34 and the first conductor portion 312.

[0096] In the above solution, the first bent portion 3411 is in contact with the first conductor portion 312 , which can further improve the conductivity of the conductive member 34 and the first flexible circuit board 31 .

[0097] According to some embodiments of this application, please refer to Figure 3 and Fig.10 The first insulating portion 311 includes a first insulating layer 3111 and a second insulating layer 3112. The first insulating layer 3111 faces the main body 343, and the second insulating layer 3112 faces away from the main body 343. The first conductor portion 312 is disposed between the first insulating layer 3111 and the second insulating layer 3112. The first insulating layer 3111 is punctured by the first pin 341 to form a first puncture hole 31111, and the first puncture hole 31111 is aligned with the first penetration hole 3121. The second insulating layer 3112 is provided with a second window 31122, and the first penetration hole 3121 is located in the area of ​​the first conductor portion 312 exposed by the second window 31122.

[0098] The second window 31122 may be formed by punching when producing the first flexible circuit board 31 .

[0099] The second window 31122 can expose the surface of the first conductor portion 312 away from the main body 343. After the first bent portion 3411 is pressed, the area that can directly contact the first conductor portion 312 is increased.

[0100] In the above solution, the second insulating layer 3112 opens the second window 31122 , which is beneficial to increase the contact area between the first bending portion 3411 and the first conductor portion 312 after the first pin 341 is crimped, and is beneficial to improve the conductivity of the conductive member 34 and the first flexible circuit board 31 .

[0101] According to some embodiments of this application, please refer to Figure 3 and Fig. 9 The first bent portion 3411 contacts the area of ​​the first conductor portion 312 exposed by the second window 31122 .

[0102] After the first bent portion 3411 is bent, a portion of the first bent portion 3411 is bent toward a direction close to the first conductor portion 312 , so that a portion of the first bent portion 3411 is in contact with the first conductor portion 312 .

[0103] In the above solution, the first bent portion 3411 contacts the first conductor portion 312 through the area exposed by the second window 31122 , which can further improve the conductivity of the conductive member 34 and the first flexible circuit board 31 .

[0104] According to some embodiments of this application, please refer to Figure 3 and Fig.10 The second conductor portion 322 defines a second through hole 3221 for the second pin 342 to pass through, and the portion of the second pin 342 passing through the second through hole 3221 is bent toward the second conductor portion 322 to form a second bent portion 3421 .

[0105] The second penetration hole 3221 can be pre-processed when the second flexible circuit board 32 is produced.

[0106] In some embodiments, the second bent portion 3421 may be pressed against a side of the second insulating portion 321 away from the main body 343 . Such a configuration means that the main body 343 is fixed to the second flexible circuit board 32 .

[0107] In some embodiments, the second bent portion 3421 pierces the second insulating portion 321 for a second time away from the main body 343 and contacts the second conductor portion 322 , which is equivalent to increasing the contact area between the conductive member 34 and the second conductor portion 322 , thereby improving the conductive performance of the conductive member 34 and the second flexible circuit board 32 .

[0108] In the above solution, the second through hole 3221 can facilitate the pre-positioning of the second pin 342, reducing the difficulty of assembling the conductive member 34 and the second flexible circuit board 32. The formation of the second curved portion 3421 is conducive to improving the connection strength and conductive performance between the second pin 342 and the second conductor portion 322.

[0109] According to some embodiments of this application, please refer to Figure 3 and Fig.10 The second insulating portion 321 includes a third insulating layer 3211 and a fourth insulating layer 3212. The third insulating layer 3211 faces the main body 343, and the fourth insulating layer 3212 faces away from the main body 343. The second conductor portion 322 is disposed between the third insulating layer 3211 and the fourth insulating layer 3212. The third insulating layer 3211 is pierced by the second pin 342 to form a third piercing hole 32111, and the fourth insulating layer 3212 is pierced by the second pin 342 to form a fourth piercing hole 32121. The third piercing hole 32111 and the fourth piercing hole 32121 are both aligned with the second penetration hole 3221.

[0110] The third puncture hole 32111 and the fourth puncture hole 32121 are both formed by the puncturing action. In other words, in the process of completing the assembly of the conductive member 34 and the second flexible circuit board 32, the third insulating layer 3211 and the fourth insulating layer 3212 are not pre-opened at the assembly position of the above two, or the second flexible circuit board 32 has no window. The second flexible circuit board 32 has no window, so there is no need to consider the expansion and contraction mismatch, fitting deviation and other problems between the third insulating layer 3211 and the fourth insulating layer 3212 and the second conductor part 322. At the same time, the second conductor part 322 is not exposed, so the risk of the second conductor part 322 being scratched, dirty, and oxidized is low. At the same time, whether it is the assembly or maintenance of the second flexible circuit board 32 and the sampling unit 33 with the first flexible circuit board 31, there is no need to go through the process of drilling, punching and cleaning the window position.

[0111] In the above scheme, the conductive member 34 and the second flexible circuit board 32 are connected by piercing the third insulating layer 3211 and the fourth insulating layer 3212 with the second pin 342. On the one hand, the risk of the second conductor portion 322 being damaged due to leakage can be reduced. On the other hand, the process of drilling holes and punching windows in the third insulating layer 3211 and / or the fourth insulating layer 3212 is omitted, thereby improving the production efficiency of the battery 100. On another hand, when the sampling component 3 is maintained, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery 100.

[0112] According to some embodiments of this application, please refer to Figure 3 and Fig.10 The second bent portion 3421 pierces the fourth insulating layer 3212 to contact the second conductor portion 322 .

[0113] After the second pin 342 pierces the third insulating layer 3211 and the fourth insulating layer 3212 , a certain pressure is applied to the second pin 342 , and the tip of the second pin 342 bent by the pressure pierces the fourth insulating layer 3212 for a second time to contact the second conductor portion 322 .

[0114] In the above solution, the second bent portion 3421 contacts the second conductor portion 322 , which is beneficial to improving the conductivity of the conductive member 34 and the second flexible circuit board 32 .

[0115] According to some embodiments of the present application, the sampling unit 33 is a temperature sensor.

[0116] In some embodiments, the temperature sensor includes a thermistor, and the positive and negative electrodes of the thermistor are respectively welded to two spaced second conductive portions in the second flexible circuit board 32 to form an electrical connection.

[0117] In the above solution, the temperature sensor generally requires two conductors to be electrically connected to the first flexible circuit. The method of electrically connecting the first flexible circuit board 31 and the second flexible circuit board 32 using a conductive member 34 including a first pin 341 and a second pin 342 can significantly reduce the maintenance cost of the battery 100.

[0118] According to some embodiments of this application, please refer to Figure 2 The present application provides a battery 100 , which includes a battery cell 12 and a sampling component 3 in one or more embodiments of the first aspect, and the sampling component 3 is used to collect information of the battery cell 12 .

[0119] In the above solution, since the battery 100 includes the sampling assembly 3 in one or more embodiments of the first aspect, the battery 100 has a lower maintenance cost.

[0120] According to some embodiments of this application, please refer to Figure 1 The present application provides an electrical device, which includes the battery 100 in one or more embodiments of the second aspect, and the battery 100 is used to provide electrical energy.

[0121] In the above solution, since the electrical equipment includes the battery 100 in one or more embodiments of the second aspect, the electrical equipment has a lower maintenance cost.

[0122] According to some embodiments of the present application, referring to Figure 3-Figure 7 as well as Fig.10 The present application provides a sampling assembly 3, comprising a first flexible circuit board 31, a second flexible circuit board 32, a sampling unit 33 and a conductive member 34. The sampling unit 33 comprises a thermistor.

[0123] The first flexible circuit board 31 includes a first insulating portion 311 and a first conductor portion 312, and the first conductor portion 312 is disposed in the first insulating portion 311. The second flexible circuit board 32 includes a second insulating portion 321 and a second conductor portion 322, and the second conductor portion 322 is disposed in the second insulating portion 321. The sampling unit 33 is disposed on the second flexible circuit board 32. The conductive member 34 is used to electrically connect the first flexible circuit board 31 and the second flexible circuit board 32. The conductive member 34 includes a main body 343, a first pin 341 and a second pin 342, and the first pin 341 and the second pin 342 both extend from the main body 343.

[0124] The first conductor portion 312 defines a first through hole 3121 for the first pin 341 to pass through. The portion of the first pin 341 passing through the first through hole 3121 is bent toward the first conductor portion 312 to form a first bent portion 3411 .

[0125] The first insulating portion 311 includes a first insulating layer 3111 and a second insulating layer 3112. The first insulating layer 3111 faces the main body 343, and the second insulating layer 3112 faces away from the main body 343. The first conductor portion 312 is disposed between the first insulating layer 3111 and the second insulating layer 3112. The first insulating layer 3111 is pierced by the first pin 341 to form a first piercing hole 31111, and the second insulating layer 3112 is pierced by the first pin 341 to form a second piercing hole 31121. The first piercing hole 31111 and the second piercing hole 31121 are both aligned with the first penetration hole 3121. The first curved portion 3411 pierces the second insulating layer 3112 to contact the first conductor portion 312.

[0126] The second conductor part 322 is provided with a second through hole 3221 for the second pin 342 to pass through. The portion of the second pin 342 passing through the second through hole 3221 is bent toward the second conductor part 322 to form a second bent portion 3421. The second insulating part 321 includes a third insulating layer 3211 and a fourth insulating layer 3212. The third insulating layer 3211 faces the main body 343, and the fourth insulating layer 3212 faces away from the main body 343. The second conductor part 322 is disposed between the third insulating layer 3211 and the fourth insulating layer 3212. The third insulating layer 3211 is pierced by the second pin 342 to form a third piercing hole 32111, and the fourth insulating layer 3212 is pierced by the second pin 342 to form a fourth piercing hole 32121. The third piercing hole 32111 and the fourth piercing hole 32121 are both aligned with the second through hole 3221. The second bent portion 3421 pierces the fourth insulating layer 3212 to contact the second conductor part 322.

[0127] The assembly process of the sampling component 3 is as follows: the first flexible circuit board 31 and the second flexible circuit board 32 are pre-processed, and then the thermistor and the second flexible circuit board 32 are welded. Finally, the conductive member 34 and the first flexible circuit board 31 and the second flexible circuit board 32 are assembled by piercing and crimping. At this point, the assembly of the thermistor and the first flexible circuit board 31 is completed.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A sampling assembly, characterized in that: include: A first flexible circuit board comprises a first insulating portion and a first conductor portion, wherein the first conductor portion is arranged in the first insulating portion; A second flexible circuit board comprises a second insulating portion and a second conductor portion, wherein the second conductor portion is arranged in the second insulating portion; A sampling unit, arranged on the second flexible circuit board; A conductive member, used for electrically connecting the first flexible circuit board and the second flexible circuit board; The conductive member includes a main body, a first pin and a second pin, both of which extend from the main body, the first pin pierces the first flexible circuit board and is electrically connected to the first conductor part, and the second pin pierces the second flexible circuit board and is electrically connected to the second conductor part.

2. The sampling assembly according to claim 1, characterized in that: The first conductor portion is provided with a first through hole for the first pin to pass through, and a portion of the first pin passing through the first through hole is bent toward the first conductor portion to form a first bent portion.

3. The sampling assembly according to claim 2, characterized in that: The first insulating portion comprises a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is arranged between the first insulating layer and the second insulating layer; The first insulating layer is punctured by the first pin to form a first puncture hole, and the second insulating layer is punctured by the first pin to form a second puncture hole. Both the first puncture hole and the second puncture hole are aligned with the first penetration hole.

4. The sampling assembly according to claim 2, characterized in that: The first insulating portion comprises a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is arranged between the first insulating layer and the second insulating layer; The first insulating layer is provided with a first window, and the first through hole is located in a region of the first conductor part exposed by the first window; The second insulating layer is pierced by the first pin to form a second piercing hole, and the second piercing hole is aligned with the first penetration hole.

5. The sampling assembly according to claim 3 or 4, characterized in that: The first bent portion pierces the second insulating layer to contact the first conductor portion.

6. The sampling assembly according to claim 2, characterized in that: The first insulating portion comprises a first insulating layer and a second insulating layer, the first insulating layer faces the main body, the second insulating layer faces away from the main body, and the first conductor portion is arranged between the first insulating layer and the second insulating layer; The first insulating layer is punctured by the first pin to form a first puncture hole, and the first puncture hole is aligned with the first penetration hole; The second insulating layer is provided with a second window, and the first through hole is located in a region where the first conductor portion is exposed by the second window.

7. The sampling assembly according to claim 6, characterized in that: The first bent portion contacts a region of the first conductor portion exposed by the second window.

8. The sampling assembly according to claim 1, characterized in that: The second conductor portion is provided with a second through hole for the second pin to pass through, and a portion of the second pin passing through the second through hole is bent toward the second conductor portion to form a second bent portion.

9. The sampling assembly according to claim 8, characterized in that: The second insulating portion comprises a third insulating layer and a fourth insulating layer, the third insulating layer faces the main body, the fourth insulating layer faces away from the main body, and the second conductor portion is arranged between the third insulating layer and the fourth insulating layer; The third insulating layer is punctured by the second pin to form a third puncture hole, and the fourth insulating layer is punctured by the second pin to form a fourth puncture hole. Both the third puncture hole and the fourth puncture hole are aligned with the second penetration hole.

10. The sampling assembly according to claim 9, characterized in that: The second bent portion pierces the fourth insulating layer to come into contact with the second conductor portion.

11. The sampling assembly according to claim 1, characterized in that: The sampling unit is a temperature sensor.

12. A battery, characterized in that: include: Battery cells; The sampling assembly according to any one of claims 1 to 11, wherein the sampling unit is used to collect information of the battery cell.

13. An electrical equipment, characterized in that: Comprising the battery of claim 12, the battery being used to provide electrical energy.

Images