Sampling assembly, battery and electric device

Abstract

The present application belongs to the technical field of batteries. Disclosed are a sampling assembly, a battery and an electric device. The sampling assembly comprises a first flexible printed circuit, a second flexible printed circuit, a sampling unit and a conductive member. The first flexible printed circuit comprises a first insulating portion and a first conductor portion, the first conductor portion being arranged in the first insulating portion. The second flexible printed circuit comprises a second insulating portion and second conductor portions, the second conductor portions being arranged in the second insulating portion. The sampling unit is arranged on the second flexible printed circuit. The conductive member is configured to electrically connect to the first flexible printed circuit and the second flexible printed circuit. The conductive member comprises a body, first pins and second pins, wherein both the first pins and the second pins extend from the body, the first pins pierce the first flexible printed circuit and are electrically connected to the first conductor portion, and the second pins pierce the second flexible printed circuit and are electrically connected to the second conductor portions. The arrangement of the sampling assembly is beneficial for reducing the maintenance costs of the battery.

Description

Sampling components, batteries and electrical equipment CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202420434073.0, filed on March 6, 2024, entitled “Sampling Component, Battery and Electrical Equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] 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

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0004] How to reduce battery maintenance costs is an urgent problem to be solved in battery technology. Summary of the Invention

[0005] In view of the above problems, the present application provides a sampling assembly, a battery and an electrical device, which can reduce the maintenance cost of the battery.

[0006] In a first aspect, the present application provides a sampling assembly comprising a first flexible circuit board, a second flexible circuit board, a sampling unit, and a conductive member. The first flexible circuit board comprises a first insulating portion and a first conductor portion, wherein the first conductor portion is disposed within the first insulating portion. The second flexible circuit board comprises a second insulating portion and a second conductor portion, wherein the second conductor portion is disposed within the second insulating portion. The sampling unit is disposed 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. The conductive member comprises a main body, a first pin, and a second pin, wherein the first pin and the second pin both extend from the main body, the first pin piercing the first flexible circuit board and electrically connecting to the first conductor portion, and the second pin piercing the second flexible circuit board and electrically connecting to the second conductor portion.

[0007] In the technical solution of the embodiments of this application, the first and second flexible circuit boards are electrically connected by crimping the first and second pins of the conductive member, simplifying assembly of the sampling assembly. When the sampling unit requires maintenance, simply loosening the first and second pins separates the sampling unit from the first flexible circuit board. This reduces the difficulty of separating the sampling unit from the first flexible circuit board and the risk of damage to the first flexible circuit board during maintenance, thus lowering battery maintenance costs.

[0008] In one or more embodiments of the first aspect, the first conductor portion defines a first through hole for the first pin to pass through, and the portion of the first pin passing through the first through hole is bent toward the first conductor portion to form a first bent portion.

[0009] In the above solution, the provision of the first through hole facilitates 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 between the first pin and the first conductor.

[0010] 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 facing the main body, the second insulating layer facing away from the main body, and the first conductor portion being disposed between the first insulating layer and the second insulating layer. The first insulating layer is punctured by the first needle to form a first puncture hole, and the second insulating layer is punctured by the first needle to form a second puncture hole, and both the first puncture hole and the second puncture hole are aligned with the first penetration hole.

[0011] 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 a 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 eliminated, thereby improving the production efficiency of the battery. On the other hand, when maintaining the sampling component, the process of drilling holes and punching windows is also eliminated, which is conducive to reducing the maintenance cost of the battery.

[0012] 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 facing the main body, the second insulating layer facing away from the main body, and the first conductor portion is disposed between the first and second insulating layers. The first insulating layer has a first window, and the first through-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, which is aligned with the first through-hole.

[0013] 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 portion, thereby improving the conductive performance of the conductive member and the first flexible circuit board.

[0014] In one or more embodiments of the first aspect, the first bent portion pierces the second insulating layer to contact the first conductor portion.

[0015] In the above solution, the first bent portion contacts the first conductor portion, which can further improve the conductivity between the conductive member and the first flexible circuit board.

[0016] 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 facing the main body, the second insulating layer facing away from the main body, and the first conductor portion being disposed between the first and second insulating layers. The first insulating layer is punctured by a first pin to form a first puncture hole, which 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.

[0017] In the above solution, the second window is opened in the second insulating layer, which is beneficial to increasing the contact area between the first bent 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] In the above solution, the second through hole facilitates the pre-positioning of the second pin, reducing the difficulty of assembling the conductive member and the second flexible circuit board. The second curved portion is conducive to improving the connection strength and conductivity of the second pin and the second conductor.

[0022] 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 facing the main body, the fourth insulating layer facing away from the main body, and the second conductor portion is disposed between the third and fourth insulating layers. The third insulating layer is punctured by the second needle to form a third puncture hole, and the fourth insulating layer is punctured by the second needle to form a fourth puncture hole, and both the third and fourth puncture holes are aligned with the second through hole.

[0023] In the above scheme, the conductive part and the second flexible circuit board are connected by piercing the third insulating layer and the fourth insulating layer with a 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 eliminated, thereby improving the production efficiency of the battery. On the other hand, when maintaining the sampling component, the process of drilling holes and punching windows is also eliminated, which is beneficial to reducing the maintenance cost of the battery.

[0024] In one or more embodiments of the first aspect, the second bent portion pierces the fourth insulating layer to contact the second conductor portion.

[0025] In the above solution, the second bent portion contacts the second conductor portion, which is beneficial to improving the conductive performance of the conductive member and the second flexible circuit board.

[0026] In one or more embodiments of the first aspect, the sampling unit is a temperature sensor.

[0027] In the above solution, the temperature sensor generally requires two conductors to be electrically connected to the first flexible circuit. Using a conductive member including a first pin and a second pin to electrically connect the first flexible circuit board and the second flexible circuit board can significantly reduce the maintenance cost of the battery.

[0028] 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.

[0029] In the above solution, since the battery includes the sampling assembly in one or more embodiments of the first aspect, the battery has lower maintenance costs.

[0030] In a third aspect, the present application provides an electrical device comprising the battery according to one or more embodiments of the second aspect, wherein the battery is configured to provide electrical energy.

[0031] In the above solution, since the electrical equipment includes the battery in one or more embodiments of the second aspect, the electrical equipment has lower maintenance costs.

[0032] 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. DETAILED DESCRIPTION

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0034] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0035] FIG2 is an exploded view of a battery according to some embodiments of the present application;

[0036] FIG3 is a schematic structural diagram of a portion of a sampling assembly according to some embodiments of the present application;

[0037] FIG4 is a cross-sectional view of a portion of the structure of a sampling assembly according to some embodiments of the present application;

[0038] FIG5 is an isometric view of a conductive member according to some embodiments of the present application;

[0039] FIG6 is a partial enlarged view of point A in FIG4 of the present application;

[0040] FIG7 is a cross-sectional view of a portion of the structure of a sampling assembly according to some other embodiments of the present application;

[0041] FIG8 is a cross-sectional view of a portion of the structure of a sampling assembly according to some other embodiments of the present application;

[0042] FIG9 is a cross-sectional view of a portion of the structure of a sampling assembly according to some other embodiments of the present application;

[0043] FIG10 is a partial enlarged view of point B in FIG4 of the present application.

[0044] The accompanying drawings in the specific implementation manner are as follows:

[0045] 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 portion; 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 portion; 3121-first penetration hole; 32-second flexible circuit board; 321-second insulating portion; 3211-third insulating layer; 32111-third puncture hole; 3212-fourth insulating layer; 32121-fourth puncture hole; 322-second conductor portion; 3221-second penetration hole; 33-sampling unit; 34-conductive member; 341-first pin; 3411-first bend; 342-second pin; 3421-second bend; 343-main body.

[0046] DETAILED DESCRIPTION

[0047] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0049] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0050] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0051] 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).

[0052] In this 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. The shape of a battery cell may include, but is not limited to, a cylinder, a flat body, a rectangular parallelepiped, or other shapes. Battery cells, depending on the packaging method, may include, but are not limited to, cylindrical battery cells, prismatic battery cells, soft-pack battery cells, and blade battery cells.

[0053] 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 box for encapsulating one or more battery cells. The box can reduce the risk of liquid or other foreign matter affecting the charging or discharging of the battery cells.

[0054] The following will mainly focus on rectangular parallelepiped battery cells. 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.

[0055] The battery is generally equipped with a sampling component and a battery management system. The sampling component samples the status of each battery cell (such as temperature, voltage, etc.), and the battery management system adjusts the battery as a whole based on the battery cell status information obtained by the sampling component to manage the battery's charge and discharge, so that the battery system operates in a stable state.

[0056] A typical sampling assembly includes a flexible circuit board and multiple sampling units, which are typically sensing elements such as thermistors. Thermistors are typically integrated into a thermal circuit board to collect temperature information from battery cells, and multiple thermistors are typically installed on a single circuit board.

[0057] Flexible printed circuits (FPCs) are highly flexible printed circuits created by embedding circuitry onto thin, bendable plastic sheets. They are particularly well-suited for applications where numerous precision components need to be packed into narrow, confined spaces, such as within battery cases.

[0058] The development of battery technology must take into account multiple 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 also needs to be considered.

[0059] 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 through reflow soldering, and then the wires in the small flexible circuit board will be soldered to the larger flexible circuit board to achieve 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 solder 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 into the flexible circuit board will be scrapped, and the sampling assembly will need to be replaced as a whole, resulting in high maintenance costs.

[0060] In view of this, the present application provides a sampling assembly comprising a first flexible circuit board, a second flexible circuit board, a sampling unit, and a conductive member. The first flexible circuit board comprises a first insulating portion and a first conductor portion, the first conductor portion being disposed within the first insulating portion. The second flexible circuit board comprises a second insulating portion and a second conductor portion, the second conductor portion being disposed within the second insulating portion. The sampling unit is disposed on the second flexible circuit board. The conductive member is used to electrically connect the first and second flexible circuit boards. The conductive member comprises a main body, a first pin, and a second pin, both extending from the main body. The first pin pierces the first flexible circuit board and electrically connects to the first conductor portion, while the second pin pierces the second flexible circuit board and electrically connects to the second conductor portion. The first and second flexible circuit boards are electrically connected by crimping the first and second pins of the conductive member, thereby simplifying assembly of the sampling assembly. When the sampling unit requires maintenance, the sampling unit can be separated from the first flexible circuit board by simply loosening the first and second pins. This reduces the difficulty of separating the sampling unit from the first flexible circuit board and also reduces the risk of damage to the first flexible circuit board during maintenance. This helps reduce battery maintenance costs.

[0061] The technical solutions described in the embodiments of this application are applicable to batteries, electrical equipment using batteries, medical equipment, wearable devices, etc.

[0062] Medical devices include pacemakers, blood glucose meters, blood pressure monitors, etc. Wearable devices include smart watches, smart bracelets, smart glasses, etc.

[0063] The following description will be made using batteries and sampling components in electrical equipment using batteries as examples.

[0064] Electrical equipment using batteries include, but are not limited to, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.

[0065] 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.

[0066] For example, FIG1 is a schematic diagram of the structure of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. A motor 300, a controller 200, and a battery 100 may be provided inside the vehicle 1000. The controller 200 is used to control the battery 100 to power the motor 300. For example, the battery 100 may be provided at the bottom, front, or rear of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may serve as the operating power source of the vehicle 1000 and may be used for the circuit system of the vehicle 1000, such as for the starting, navigation, and operation power requirements of the vehicle 1000. In another embodiment of the present application, the battery 100 may serve not only as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0067] To meet different power requirements, the battery 100 may include multiple battery cells 12, wherein the multiple battery cells 12 can be connected in series, in parallel, or in a hybrid connection. Hybrid connection refers to a mixture of series and parallel connections. The battery 100 may also be referred to as a battery pack. Optionally, multiple battery cells 12 may first be connected in series, in parallel, or in a hybrid connection to form a battery module, and multiple battery modules may then be connected in series, in parallel, or in a hybrid connection to form the battery 100. In other words, multiple battery cells 12 may directly form the battery 100, or they may first form battery modules, which may then form the battery 100.

[0068] For example, referring to FIG. 2 , FIG. 2 is an exploded view of a battery 100 according to 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 having a hollow interior, and the plurality of battery cells 12 are housed within the housing 11. As shown in FIG. 2 , these are referred to herein as a first portion 111 and a second portion 112, respectively. The first portion 111 and the second portion 112 are fastened together. The shapes of the first portion 111 and the second portion 112 may be determined based on the combined shape of the plurality of battery cells 12. The first portion 111 and the second portion 112 may each have a single opening. For example, the first portion 111 and the second portion 112 may each be a hollow rectangular parallelepiped, each with only one open face. The opening of the first portion 111 and the opening of the second portion 112 are arranged opposite each other, and the first portion 111 and the second portion 112 are fastened together to form the housing 11 having a closed chamber. The plurality of battery cells 12 are then arranged in parallel, in series, or in a mixed configuration and then placed within the housing 11 formed by the fastening of the first portion 111 and the second portion 112.

[0069] Optionally, the battery 100 may also include other structures, which will not be described in detail here. For example, the battery 100 may also include a busbar component, which is used to achieve electrical connection between multiple battery cells 12, such as parallel connection, series connection, or mixed connection. Specifically, the busbar component can achieve 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. A sampling unit 33 is electrically connected to the flexible circuit board. The sampling unit 33 is used to collect information of the battery cells 12, such as temperature, voltage and other information. In some embodiments, the sampling component 3 is arranged on the busbar component.

[0070] The number of battery cells 12 can be set to any value according to different power requirements. Multiple battery cells 12 can be connected in series, parallel, or in a hybrid manner 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 a battery module is not limited and can be set according to requirements. The battery 100 may include multiple battery modules, which can be connected in series, parallel, or in a hybrid manner.

[0071] According to some embodiments of the present application, referring to Figures 3-5 , a sampling assembly 3 is provided, comprising a first flexible printed circuit board 31, a second flexible printed circuit board 32, a sampling unit 33, and a conductive member 34. The first flexible printed circuit board 31 comprises a first insulating portion 311 and a first conductive portion 312, with the first conductive portion 312 disposed within the first insulating portion 311. The second flexible printed circuit board 32 comprises a second insulating portion 321 and a second conductive portion 322, with the second conductive portion 322 disposed within the second insulating portion 321. The sampling unit 33 is disposed on the second flexible printed circuit board 32. The conductive member 34 is configured to electrically connect the first flexible printed circuit board 31 and the second flexible printed circuit board 32. The conductive member 34 comprises a main body 343, a first pin 341, and a second pin 342. Both the first pin 341 and the second pin 342 extend from the main body 343. The first pin 341 pierces the first flexible printed circuit board 31 and is electrically connected to the first conductive portion 312. The second pin 342 pierces the second flexible printed circuit board 32 and is electrically connected to the second conductive portion 322.

[0072] The first flexible printed circuit board 31 typically integrates multiple components, such as a temperature sensor, a voltage sensor, and a connector. The temperature sensor is used to collect temperature signals from the battery cells 12, the voltage sensor is used to collect voltage signals from the battery cells 12, and the connector is used to output the signals collected by the sampling component 3. In the battery 100, these collected signals are typically transmitted to the battery management system for centralized processing.

[0073] The sampling unit 33 may include a temperature sensor such as a thermistor or a voltage sensor such as a nickel sheet. In some embodiments, the sampling unit 33 is a voltage sensor comprising a nickel sheet, one end of which contacts an electrode terminal of the battery cell 12, and the other end of which is electrically connected to the first conductive portion by welding or crimping. Alternatively, the nickel sheet may have only one lead end.

[0074] 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.

[0075] The first conductor portion 312 and the second conductor portion 322 may be made of copper, silver, aluminum, or the like.

[0076] The conductive member 34 may be made of copper, silver, aluminum, etc.

[0077] 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.

[0078] There may be a plurality of first stitches 341. In some embodiments, the plurality of first stitches 341 are spaced apart. There may be a plurality of second stitches 342. In some embodiments, the plurality of second stitches 342 are spaced apart.

[0079] The ends of the first pin 341 and the second pin 342 are generally pointed.

[0080] During assembly of the conductive member 34, a certain amount of pressure can be applied to the main body 343, causing the first pin 341 to pierce the first flexible circuit board 31 and the second pin 342 to pierce 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. 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.

[0081] For example, the conductive member 34 is a temperature sensor, comprising a thermistor. The two leads of the thermistor, also understood as the positive and negative terminals of the thermistor, are soldered to the first ends of the two second conductors 322 within the second flexible printed circuit board 32. The second ends of the two second conductors 322 are crimped to the second pins 342 of the conductive member 34, while the first pin 341 of the conductive member 34 is crimped to the first conductor 312 within the first flexible printed circuit board 31. To replace the temperature sensor, simply straighten the bent first and second pins 341, 342 to separate the conductive member 34, the first flexible printed circuit board 31, and the second flexible printed circuit board 32. The second flexible printed circuit board 32 and the sampling unit 33 can then be replaced. After replacement, the second flexible circuit board 32 and sampling unit 33 can be electrically reconnected to the first flexible circuit board 31 via a new conductive member 34 or the old conductive member 34 by puncturing and crimping. If the temperature sensor needs to be replaced, the conductive member 34 can be cut to separate only the second flexible circuit board 32 and the conductive member 34. When replacing the second flexible circuit board 32 and sampling unit 33, new second pins 342 can be re-soldered onto the conductive member 34, and then electrically reconnected to the conductive member 34 and the second flexible circuit board 32 by puncturing and crimping. Regardless of which of the above methods is used to maintain the sampling assembly 3, the first flexible circuit board 31 will not be damaged.

[0082] In the technical solution of the embodiment of this application, the first flexible printed circuit board 31 and the second flexible printed circuit board 32 are electrically connected by crimping the first pin 341 and the second pin 342 of the conductive member 34, simplifying the assembly of the sampling assembly 3. When the sampling unit 33 requires maintenance, the sampling unit 33 can be separated from the first flexible printed circuit board 31 by simply loosening the first pin 341 and the second pin 342. This reduces the difficulty of separating the sampling unit 33 from the first flexible printed circuit board 31 and also reduces the risk of damage to the first flexible printed circuit board 31 during maintenance. This helps reduce the maintenance cost of the battery 100.

[0083] According to some embodiments of the present application, referring to FIG. 4 to FIG. 6 , 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 .

[0084] The first through hole 3121 can be pre-processed when producing the first flexible circuit board 31 .

[0085] 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.

[0086] In some embodiments, the first bent portion 3411 pierces the first insulating portion 311 twice to contact the first conductor portion 312 on the side 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.

[0087] In the above solution, the provision of the first through-hole 3121 facilitates the pre-positioning of the first pin 341, reducing the difficulty of assembling the conductive member 34 with the first flexible circuit board 31. The formation of the first bent portion 3411 helps to improve the connection strength and conductivity between the first pin 341 and the first conductor portion 312.

[0088] According to some embodiments of the present application, referring to FIG. 3 and FIG. 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 needle 341 punctures the first insulating layer 3111 to form a first puncture hole 31111, and the first needle 341 punctures the second insulating layer 3112 to form a second puncture hole 31121. The first puncture hole 31111 and the second puncture hole 31121 are both aligned with the first through hole 3121.

[0089] Both the first puncture hole 31111 and the second puncture hole 31121 are formed by puncturing. In other words, during the assembly process between the conductive member 34 and the first flexible circuit board 31, no holes are pre-perforated in the first insulating layer 3111 or the second insulating layer 3112 at their respective assembly locations. Alternatively, the first flexible circuit board 31 lacks windows. Without windows, there are no concerns about expansion / contraction mismatches or misalignment between the first and second insulating layers 3111 and 3112 and the first conductive portion 312. Furthermore, since the first conductive portion 312 is not exposed, the risk of scratches, contamination, or oxidation is minimized. Furthermore, during both assembly and maintenance of the second flexible circuit board 32 and sampling unit 33 with the first flexible circuit board 31, drilling, punching, and cleaning of the window locations are unnecessary.

[0090] 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.

[0091] 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 the other hand, when maintaining the sampling component 3, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery 100.

[0092] According to some embodiments of the present application, referring to FIG. 3 and FIG. 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, while 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 defines a first window 31112, and a first through-hole 3121 is located in the region of the first conductor portion 312 exposed by the first window 31112. The second insulating layer 3112 is punctured by the first pin 341 to form a second puncture hole 31121, which is aligned with the first through-hole 3121.

[0093] The first window 31112 can be formed by punching when producing the first flexible circuit board 31 .

[0094] The provision of the first window 31112 allows the surface of most of the main body 343 facing the first conductor portion 312 to fit in contact with the first conductor portion 312 , thereby increasing the contact area between the conductive member 34 and the first conductor portion 312 .

[0095] In the above solution, the first window 31112 is provided in the first insulating layer 3111 to increase the contact area between the main body 343 and the first conductor portion 312 , thereby improving the conductivity between the conductive member 34 and the first flexible circuit board 31 .

[0096] According to some embodiments of the present application, referring to FIG. 3 and FIG. 9 , the first bent portion 3411 pierces the second insulating layer 3112 to contact the first conductor portion 312 .

[0097] 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.

[0098] In the above solution, the first bent portion 3411 contacts the first conductor portion 312 , which can further improve the conductivity between the conductive member 34 and the first flexible circuit board 31 .

[0099] According to some embodiments of the present application, referring to FIG. 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, while 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 needle 341 punctures the first insulating layer 3111 to form a first puncture hole 31111, which is aligned with the first through-hole 3121. The second insulating layer 3112 defines a second window 31122, located in the region of the first conductor portion 312 exposed by the second window 31122.

[0100] The second window 31122 can be formed by punching when producing the first flexible circuit board 31 .

[0101] The second window 31122 can expose the surface of the first conductor portion 312 facing away from the main body 343. After the first bent portion 3411 is completely pressed, the area directly contacting the first conductor portion 312 is increased.

[0102] In the above solution, the second insulating layer 3112 opens the second window 31122 , which is beneficial to increasing the contact area between the first bent portion 3411 and the first conductor portion 312 after the first pin 341 is crimped, and is beneficial to improving the conductive performance of the conductive member 34 and the first flexible circuit board 31 .

[0103] According to some embodiments of the present application, referring to FIG. 3 and FIG. 9 , the first bent portion 3411 contacts the area of ​​the first conductor portion 312 exposed by the second window 31122 .

[0104] After the first bent portion 3411 is bent, a portion of the first bent portion 3411 is bent toward the first conductor portion 312 , so that a portion of the first bent portion 3411 is in contact with the first conductor portion 312 .

[0105] In the above solution, the first bent portion 3411 contacts the area of ​​the first conductor portion 312 exposed by the second window 31122 , which can further improve the conductivity between the conductive member 34 and the first flexible printed circuit board 31 .

[0106] According to some embodiments of the present application, referring to FIG. 3 and FIG. 10 , the second conductor portion 322 defines 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 portion 322 to form a second bent portion 3421 .

[0107] The second through hole 3221 can be pre-processed when the second flexible circuit board 32 is produced.

[0108] In some embodiments, the second bent portion 3421 may press against a side of the second insulating portion 321 facing away from the main body 343 . Such a configuration means that the main body 343 is fixed to the second flexible circuit board 32 .

[0109] In some embodiments, the second bent portion 3421 pierces the second insulating portion 321 a second time and contacts the second conductor portion 322 away from the main body 343, 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.

[0110] In the above solution, the provision of the second through-hole 3221 facilitates 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 helps to improve the connection strength and conductivity between the second pin 342 and the second conductor portion 322.

[0111] According to some embodiments of the present application, referring to FIG. 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 punctured by the second pin 342 to form a third puncture hole 32111, and the fourth insulating layer 3212 is punctured by the second pin 342 to form a fourth puncture hole 32121. The third puncture hole 32111 and the fourth puncture hole 32121 are both aligned with the second through hole 3221.

[0112] Both the third puncture hole 32111 and the fourth puncture hole 32121 are formed by puncturing. In other words, during the assembly process between the conductive member 34 and the second flexible circuit board 32, no holes are pre-perforated in the third insulating layer 3211 or the fourth insulating layer 3212 at the assembly locations. Alternatively, the second flexible circuit board 32 is windowless. Without windowing, there are no concerns about expansion / contraction mismatches or misalignment between the third insulating layer 3211 or the fourth insulating layer 3212 and the second conductive portion 322. Furthermore, since the second conductive portion 322 is not exposed, the risk of scratches, contamination, or oxidation is minimized. Furthermore, during both assembly and maintenance of the second flexible circuit board 32 and the sampling unit 33 with the first flexible circuit board 31, drilling, punching, and cleaning of the window locations are unnecessary.

[0113] 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 the other hand, when maintaining the sampling component 3, the process of drilling holes and punching windows is also omitted, which is beneficial to reducing the maintenance cost of the battery 100.

[0114] According to some embodiments of the present application, referring to FIG. 3 and FIG. 10 , the second bent portion 3421 pierces the fourth insulating layer 3212 to contact the second conductor portion 322 .

[0115] 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 . The tip of the second pin 342 bent by the pressure pierces the fourth insulating layer 3212 again to contact the second conductor portion 322 .

[0116] In the above solution, the second bent portion 3421 contacts the second conductor portion 322 , which is beneficial for improving the conductivity between the conductive member 34 and the second flexible circuit board 32 .

[0117] According to some embodiments of the present application, the sampling unit 33 is a temperature sensor.

[0118] In some embodiments, the temperature sensor includes a thermistor, and the positive and negative electrodes of the thermistor are respectively welded to two spaced apart second conductive portions in the second flexible circuit board 32 to form an electrical connection.

[0119] In the above solution, the temperature sensor generally requires two conductors to be electrically connected to the first flexible circuit. Using a conductive member 34 including a first pin 341 and a second pin 342 to electrically connect the first flexible circuit board 31 and the second flexible circuit board 32 can significantly reduce the maintenance cost of the battery 100.

[0120] According to some embodiments of the present application, please refer to FIG. 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. The sampling component 3 is used to collect information of the battery cell 12 .

[0121] 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.

[0122] According to some embodiments of the present application, please refer to FIG. 1 . The present application provides an electrical device, which includes a battery 100 according to one or more embodiments of the second aspect, and the battery 100 is used to provide electrical energy.

[0123] 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 lower maintenance costs.

[0124] According to some embodiments of the present application, referring to Figures 3 to 7 and 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.

[0125] The first flexible printed circuit board 31 includes a first insulating portion 311 and a first conductive portion 312, with the first conductive portion 312 disposed within the first insulating portion 311. The second flexible printed circuit board 32 includes a second insulating portion 321 and a second conductive portion 322, with the second conductive portion 322 disposed within the second insulating portion 321. The sampling unit 33 is disposed on the second flexible printed circuit board 32. The conductive member 34 is used to electrically connect the first flexible printed circuit board 31 and the second flexible printed circuit board 32. The conductive member 34 includes a main body 343, a first pin 341, and a second pin 342, both of which extend from the main body 343.

[0126] 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 .

[0127] 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, while the second insulating layer 3112 faces away from the main body 343. The first conductive portion 312 is disposed between the first insulating layer 3111 and the second insulating layer 3112. The first needle 341 punctures the first insulating layer 3111 to form a first puncture hole 31111, and the second insulating layer 3112 to form a second puncture hole 31121. The first puncture hole 31111 and the second puncture hole 31121 are aligned with the first through-hole 3121. The first curved portion 3411 punctures the second insulating layer 3112 to contact the first conductive portion 312.

[0128] The second conductor portion 322 defines a second through-hole 3221 for the second pin 342 to pass through. The portion of the second pin 342 that passes through the second through-hole 3221 bends toward the second conductor portion 322, forming a second bent portion 3421. 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, while the fourth insulating layer 3212 faces away from the main body 343. The second conductor portion 322 is disposed between the third and fourth insulating layers 3211 and 3212. The second pin 342 punctures the third insulating layer 3211, forming a third puncture hole 32111. The fourth insulating layer 3212 is also punctured by the second pin 342, forming a fourth puncture hole 32121. Both the third and fourth puncture holes 32111 and 32121 are aligned with the second through-hole 3221. The second bent portion 3421 punctures the fourth insulating layer 3212 to contact the second conductor portion 322.

[0129] The assembly process for the sampling assembly 3 is as follows: The first and second flexible circuit boards 31, 32 are pre-fabricated, followed by soldering the thermistor to the second flexible circuit board 32. Finally, the conductive element 34 is assembled to the first and second flexible circuit boards 31, 32 through puncture and crimping. This completes the assembly of the thermistor and first flexible circuit board 31.

[0130] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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 includes a first insulating portion and a first conductive portion, wherein the first conductive portion is disposed within the first insulating portion; A second flexible circuit board includes a second insulating portion and a second conductive portion, wherein the second conductive portion is disposed within the second insulating portion; a sampling unit, provided on the second flexible circuit board; a conductive member, configured to electrically connect 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 defines 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 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. 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 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; A first window is formed in the first insulating layer, and the first through hole is located in a region 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.

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

6. The sampling assembly according to claim 2, characterized in that 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; A second window is defined in the second insulating layer, and the first through hole is located in a region where the first conductor 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 any one of claims 1 to 7, characterized in that: The second conductor portion defines 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 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 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 any one of claims 1 to 10, 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 device, characterized in that: The battery of claim 12 is provided for providing electrical energy.

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