Collecting device, battery and electric device

Abstract

The application relates to a collecting device, a battery and a power utilization device, which comprise an FPC and an electric plug connector. The FPC comprises a conductive layer and an insulating layer, and the insulating layer is wrapped outside the conductive layer. At least one end of the FPC in the extension direction is configured with a binding part, the binding part is divided into a windowed area and a wrapped area, the conductive layer extends to the binding part, one side of the conductive layer located in the windowed area is exposed, and both sides of the conductive layer located in the wrapped area are both provided with the insulating layer. The electric plug connector comprises a plurality of electric plug connecting parts, each electric plug connecting part comprises a plurality of spikes, each spike pierces and fixedly connects the binding part, and each spike is electrically connected with the conductive layer located in the binding part. Part of the spikes of each electric plug connecting part are located in the wrapped area, and the remaining spikes are located in the windowed area. The technical scheme of the application can provide the binding strength of the FPC and the electric plug connector, and improve the pull-out resistance of the FPC.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to data acquisition devices, batteries, and power-consuming devices. Background Technology

[0002] In related technologies, the signal acquisition components in a battery pack are connected to the battery management system (BMS) using a flexible printed circuit board (FPC) to transmit the acquired signals to the BMS, facilitating the BMS's monitoring and management of the battery's operating status. One connection method between the FPC and the BMS is via wiring harnesses. This method requires a large number of wiring harnesses, resulting in high costs and significant space consumption, which is detrimental to the space utilization of the battery pack. Another connection method is through direct insertion using electrical connectors. This solution is simple, space-saving, and convenient to operate. However, due to the relatively weak structural strength of the FPC, it is prone to detaching from the bonded electrical connectors during insertion and removal, leading to connection failure between the FPC and the BMS. Therefore, it is necessary to improve the connection strength between the FPC and the bonded electrical connectors, i.e., to increase the FPC's pull-out resistance. Utility Model Content

[0003] Based on this, in order to improve the tensile strength of FPC, a data collection device, a battery, and a power supply device are provided.

[0004] Firstly, this application proposes a data acquisition device, comprising:

[0005] The FPC includes a conductive layer and an insulating layer, the insulating layer being wrapped around the conductive layer; the FPC has a bonding portion at at least one end in its extending direction, the bonding portion dividing a window area and a wrapping area, the conductive layer extending to the bonding portion, with one side of the conductive layer in the window area exposed, and both sides of the conductive layer in the wrapping area covered by an insulating layer; and

[0006] An electrical connector includes multiple electrical connector portions, each of which includes multiple spikes, each spike piercing and securing a binding portion, and each spike being electrically connected to a conductive layer located on the binding portion; a portion of the spikes in each electrical connector are located in a wrapping area, and the remaining portion of the spikes are located in a windowed area.

[0007] In some embodiments, the collection device further includes a reinforcing membrane covering the surface of the envelope area, wherein the spikes located in the envelope area puncture the reinforcing membrane.

[0008] In some embodiments, the window area and the wrapping area are arranged adjacent to each other along the extending direction, and the window area is located at the edge of the FPC.

[0009] In some embodiments, the conductive layer includes a plurality of conductive strips spaced apart along the width direction of the FPC, each of the electrical plugs being electrically connected to the conductive strips via its spikes, and different conductive strips being connected to different electrical plugs;

[0010] Each of the electrical connectors includes a connector terminal, and each of the spikes is arranged on the same side of the connector terminal; in each of the electrical connectors, the spike furthest from the connector terminal is a first spike, and the first spike is located in the enclosed area.

[0011] In some embodiments, the collection device further includes a reinforcing membrane that covers the surface of the envelope area and surrounds the first spike.

[0012] In some embodiments, in each of the electrical connectors, the spike that is adjacent to and closest to the first spike is the second spike, and the second spike is located in both the wrapping area and the window area.

[0013] In some embodiments, the reinforcing membrane surrounds the second spike located in the wrapping area.

[0014] In some embodiments, each of the spikes in each of the electrical connectors is arranged sequentially along the extending direction, and each pair of adjacent spikes is arranged on different sides of the same conductive strip.

[0015] In some embodiments, the same end of the FPC is provided with a first binding part and a second binding part that are folded together. The first binding part and the second binding part are spaced apart along the thickness direction of the FPC, and both are pierced and fixed with a plurality of electrical plug parts.

[0016] The piercing direction of the electrical connector on the first binding part is the same as the piercing direction of the electrical connector on the second binding part.

[0017] In some embodiments, the second binding part is provided with a hollow opening, which passes through the second binding part.

[0018] Secondly, this application proposes a battery comprising:

[0019] Battery cell;

[0020] The acquisition device as described in the first aspect;

[0021] The FPC is used to connect to the battery cell to collect voltage and / or temperature information, and the electrical connector is used to transmit the collected information to the outside.

[0022] Thirdly, this application proposes an electrical device including a battery as described in the second aspect.

[0023] Compared with the prior art, this application has the following beneficial effects:

[0024] The aforementioned data acquisition device, battery, and power supply unit, firstly, because the conductive layer in the windowed area is exposed, the spikes pierce and fix the windowed area. The exposed conductive layer facilitates observation of whether these spikes successfully connect to the conductive layer, ensuring a reliable electrical connection between the electrical connector and the FPC, and guaranteeing the usability of the electrical connector. Secondly, because the encapsulated area has two insulating layers, some spikes pierce the two insulating layers of the encapsulated area and then fold back to clamp the encapsulated area. This makes the bonding strength between the spikes in the encapsulated area and the bonding part higher than that between the spikes in the windowed area and the bonding part. Compared to the bonding part being entirely open, combining the encapsulated area and the windowed area results in a stronger structural bonding part, thereby improving the bonding strength between the electrical connector and the FPC and enhancing the FPC's pull-out resistance. After the data acquisition device is connected to the BMS's female connector via the electrical connector, even under conditions such as vibration, tension, and thermal expansion and contraction, the FPC and the electrical connector are less prone to loosening or contact failure, improving the reliability of the data acquisition device. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 These are schematic diagrams of the vehicle structure in some embodiments;

[0027] Figure 2 This is an exploded view of a battery according to some embodiments;

[0028] Figure 3 This is a schematic diagram of the external shape of a battery cell in some embodiments;

[0029] Figure 4 This is an exploded view of a battery cell in some embodiments;

[0030] Figure 5 This is an exploded view of the top cover assembly in some embodiments;

[0031] Figure 6 These are schematic diagrams of the battery structure in some embodiments;

[0032] Figure 7 This is a partial structural schematic diagram of the data acquisition device in some embodiments;

[0033] Figure 8 for Figure 7Another view of the structure shown;

[0034] Figure 9 This is a schematic diagram showing the insertion of the data acquisition device and the female connector in some embodiments;

[0035] Figure 10 for Figure 7 Another view of the structure shown;

[0036] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0037] Figure 12 These are schematic diagrams of the electrical connector structure in some embodiments;

[0038] Figure 13 for Figure 7 Another view of the structure shown.

[0039] The reference numerals in the detailed embodiments are as follows:

[0040] 10000 Electrical device; 1000 Battery; 100 Battery box; 110 Box cover; 120 Box body; 200 Battery cell; 210 Electrode assembly; 220 Top cover assembly; 221 Cover plate; 221a Injection hole; 222 Terminal; 223 Upper plastic; 224 Lower plastic; 225 Seal; 226a End cap patch; 226b Protective patch; 227 Explosion-proof valve; 228 Adapter plate; 229 Riveting parts; 250 Housing; 260 Base plate; 270 Insulating film; 280 Protective film; 300 Data collection device 301, FPC; 301b, conductive layer; b1, conductive strip; 301a, insulating layer; 301c, bonding part; c1, window area; c2, wrapping area; 301c-A, first bonding part; 301c-B, second bonding part; c3, cutout; X, width direction; Y, extension direction; Z, thickness direction; 302, electrical connector; 302a, electrical connector; a1, spike; a11, first spike; a12, second spike; a2, plug terminal; 303, reinforcing film; 304, acquisition terminal; 400, busbar; 500, plug female terminal. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that, where they appear, the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, where applicable, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., shall be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral part; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that, if an element is described as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is described as "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] In order to improve the connection strength between the FPC and the bonded plug terminals, this application proposes a data acquisition device, a battery, and a power supply device.

[0048] The battery in this embodiment can be applied to an electrical device to provide power to it. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, etc. (See also...) Figure 1 Taking the electrical device 10000 as an example of a vehicle, the battery 1000 can be located at the rear, front, or bottom of the vehicle. The battery 1000 can provide power for the vehicle's drive and also for the vehicle's control system.

[0049] In this application embodiment, the battery 1000 can be a battery pack or a battery module. When the battery 1000 is a battery pack, such as Figure 2 As shown, a battery pack typically includes a battery case 100 and multiple battery cells 200. The multiple battery cells 200 can be electrically connected in series, parallel, or a combination of both. The battery cells 200 are disposed within the battery case 100. In one embodiment, the battery case 100 includes a case body 120 and a cover 110. The cover 110 closes to the open end of the case body 120 and, together with the cover 110, encloses the loading space of the battery case 100.

[0050] In one embodiment, the battery pack 1000 may further include a battery management system (BMS). The individual battery cells 200 are communicatively connected to the battery management system via a data acquisition device 300, which controls and monitors the operating status of each individual battery cell 200. In other embodiments, the data acquisition device 300 may also be connected to a device outside the battery pack to facilitate external device management and monitoring of the battery pack's operation.

[0051] In addition, multiple battery cells 200 can be first connected with the module management system through the acquisition device 300 to form a battery module, and then the multiple battery modules can be electrically connected in series, parallel or a combination of series and parallel, and together with the battery management system, form a battery pack.

[0052] The battery cell 200 involved in this application embodiment is the smallest unit in the battery 1000 where electrochemical reactions take place, and can be a secondary battery or a primary battery. The battery cell 200 can be a lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 200 can be cylindrical, flat, cuboid, or other shapes.

[0053] In some embodiments, refer to Figure 3 and Figure 4 The battery cell 200 includes a housing 250, a top cover assembly 220, and an electrode assembly 210. The housing 250 and the top cover assembly 220 together form an internal space for accommodating the electrode assembly 210. Specifically, the housing 250 may have a receiving cavity formed therein, with at least one end open. The top cover assembly 220 closes the open end of the housing 250 to seal the receiving cavity, and the electrode assembly 210 is mounted within the receiving cavity. The housing 250 may be, but is not limited to, a metal housing, such as an aluminum housing or a steel housing.

[0054] In some embodiments, refer to Figure 4 The battery cell 200 also includes a protective film 280, which wraps around the outside of the housing 250 and provides insulation and prevents impacts and scratches to the housing 250. In a further example, a bottom support plate 260 is provided at the bottom of the housing 250, supporting the electrode assembly 210 and positioned between the housing 250 and the electrode assembly 210. This enhances the strength of the bottom of the housing 250 and prevents damage to the electrode assembly 210 when the bottom of the housing 250 is impacted. Optionally, an insulating film 270 is wrapped around the electrode assembly 210 to insulate the electrode assembly 210 from the housing 250. Further optionally, an insulating film 270 is also provided between the electrode assembly 210 and the top cover assembly 220 to reduce the risk of leakage from the battery cell 200.

[0055] The battery cell 200 can be a liquid battery or a solid battery. If the battery cell 200 is a liquid battery, in some embodiments, the electrode assembly 210 includes a positive electrode, a negative electrode, and a separator separating the positive and negative electrodes. A liquid electrolyte (i.e., electrolyte solution) can be injected into the battery cell 200. The electrolyte solution wets the interior of the electrode assembly 210, providing an ion migration pathway for the electrochemical reaction in the electrode assembly 210 and serving a conductive function. The electrode assembly 210 can be in the form of a wound type, a stacked type, etc. One or more electrode assemblies 210 can be installed in the battery cell 200. If the battery cell 200 is a solid battery, compared with a liquid battery, its electrolyte is solidly disposed between the positive and negative electrodes.

[0056] At least one end of the electrode assembly 210 is provided with a protruding tab. The tab includes a positive tab and a negative tab. The positive tab is generally formed by a protruding portion of the edge of a positive electrode sheet. The negative tab is generally formed by a protruding portion of the edge of a negative electrode sheet. In some embodiments, the positive tab and the negative tab are arranged at the same end of the electrode assembly 210. In other embodiments, the positive tab and the negative tab are arranged at opposite ends of the electrode assembly 210. In some embodiments, a plurality of electrode assemblies 210 are provided within the battery cell 200, and the tabs of the same polarity of each electrode assembly 210 are arranged at the same end, while the tabs of different polarities can be arranged at the same end or at opposite ends.

[0057] The top cover assembly 220 is provided with a terminal post 222. The terminal post 222 on the top cover assembly 220 may include a positive terminal post and / or a negative terminal post. When the positive and negative terminals are located at the same end of the electrode assembly 210, the top cover assembly 220 is correspondingly configured with a positive terminal post and a negative terminal post, which are welded to the positive and negative terminals respectively. When the positive and negative terminals are located at opposite ends of the electrode assembly 210, the top cover assembly 220 is correspondingly configured with a positive terminal post or a negative terminal post. Top cover assemblies 220 are configured at both ends of the housing 250.

[0058] In some embodiments, refer to Figure 5 The top cover assembly 220 includes a cover plate 221, an electrode post 222, and a seal 225. The electrode post 222 is sealed and mounted on the cover plate 221 via the seal 225. In a further embodiment, the top cover assembly 220 also includes an upper plastic 223 and a lower plastic 224. The upper plastic 223 is located on the outside of the cover plate 221 and is disposed opposite to the electrode assembly 210. The lower plastic 224 is located on the inside of the cover plate 221 and is insulated between the electrode post 222 and the cover plate 221. The cover plate 221 is used to cover the opening end of the housing 250. In a further embodiment, the top cover assembly 220 also includes a riveting member 229. The riveting member 229 is arranged on the outside of the cover plate 221 and welded to the electrode post 222. The upper plastic 223 is insulated between the riveting member 229 and the cover plate 221. The riveting member 229 is used to weld to an external electrical connector (such as a tamper). Optionally, a groove is provided on the lower plastic 224, and the riveting member 229 is installed in the groove, which can both position the riveting member 229 and better insulate the riveting member 229 and the cover plate 221. In a further embodiment, an explosion-proof valve 227 is installed on the cover plate 221. Optionally, a protective patch 226b is provided on the cover plate 221 corresponding to the explosion-proof valve 227. Further optionally, an end cap patch 226a is provided on the outer end face of the cover plate 221. In a further embodiment, the top cover assembly 220 includes an adapter piece 228, which is located on the inner side of the cover plate 221 and electrically connected to the pole post 222 for electrical connection with the electrode tab, thereby realizing the electrical connection between the pole post 222 and the electrode tab.

[0059] The acquisition device 300 proposed in the embodiments of this application will be described in detail below.

[0060] Please refer to Figure 6 , Figure 7 and Figure 8 The acquisition device 300 in this embodiment includes an FPC 301 and an electrical connector 302. The FPC 301 includes a conductive layer 301b and an insulating layer 301a, with the insulating layer 301a covering the conductive layer 301b. At least one end of the FPC 301 in its extending direction Y has a binding portion 301c, which is divided into a window area c1 and a covering area c2. The conductive layer 301b extends to the binding portion 301c, with one side of the conductive layer 301b in the window area c1 exposed, and the insulating layer 301a is applied to both sides of the conductive layer 301b in the covering area c2. The electrical connector 302 includes multiple electrical connector portions 302a, each including multiple spikes a1. Each spike a1 pierces and securely connects to the binding portion 301c, and each spike a1 is electrically connected to the conductive layer 301b located in the binding portion 301c. In each electrical connector 302a, a portion of the spikes a1 are located in the enclosed area c2, and the remaining spikes a1 are located in the open area c1.

[0061] FPC301 (Flexible Printed Circuit) is a flexible circuit board. FPC301 includes a conductive layer 301b and an insulating layer 301a. As one possible approach, one insulating layer 301a serves as a substrate, is conductively printed on the substrate, and another insulating layer 301a covers the substrate and covers the conductive layer 301b to achieve electrical insulation of FPC301.

[0062] FPC301 extends in a generally strip-like shape, with at least one end in the Y-direction having a bonding portion 301c. The conductive layer 301b extends to the window area c1 and the encapsulation area c2 of the bonding portion 301c. The difference between the window area c1 and the encapsulation area c2 is that the conductive layer 301b in the encapsulation area c2 is covered with an insulating layer 301a on both sides, while the conductive layer 301b in the window area c1 is only covered with an insulating layer 301a on one side, leaving the other layer exposed.

[0063] The bonding part 301c is used to bond the electrical connector 302. When the electrical connector 302 is bonded to the FPC 301, the electrical connector 302 is electrically connected to the FPC 301. In practical applications, such as... Figure 9 As shown, the electrical connector 302 is used to connect to the female connector 500 of an external device to realize the connection between the FPC 301 and the external device, which may be a BMS.

[0064] The electrical connector 302 includes multiple electrical plug portions 302a, each electrical plug portion 302a including multiple spikes a1. The spikes a1 are conductive and have a sharp end. The electrical connector 302 is bonded to the bonding portion 301c by piercing the bonding portion 301c with the spikes a1 on the electrical plug portion 302a. Generally, after piercing the bonding portion 301c, the spikes a1 fold back towards the bonding portion 301c to press against it or pierce into the bonding portion 301c, thus achieving fixation with the bonding portion 301c.

[0065] The spike a1 is electrically connected to the conductive layer 301b on the binding part 301c. Alternatively, after piercing the binding part 301c, the spike a1 can fold back and clamp the conductive layer 301b, thus achieving both electrical connection of the spike a1 to the conductive layer 301b and fixation to the binding part 301c. Alternatively, the piercing point of the spike a1 can abut against the conductive layer 301b.

[0066] In each electrical connector 302a, some of the spikes a1 pierce the window area c1, and the remaining spikes a1 pierce the enclosure area c2. First, since the conductive layer 301b of the window area c1 is exposed, the spikes a1 pierce and fix the window area c1. The exposed conductive layer 301b makes it easy to observe whether these spikes a1 are successfully electrically connected to the conductive layer 301b, ensuring a reliable electrical connection between the electrical connector 302a and the FPC 301, and ensuring the usability of the electrical connector 302.

[0067] Secondly, since the wrapping area c2 has two insulating layers 301a, the spikes a1 pierce the two insulating layers 301a and then fold back to clamp the wrapping area c2. This makes the bonding strength between the spikes a1 in the wrapping area c2 and the binding part 301c higher than that between the spikes a1 in the windowed area c1 and the binding part 301c. Compared to the binding part 301c being entirely open, combining the wrapping area c2 and the windowed area c1 results in a stronger structural strength for the binding part 301c, thereby improving the bonding strength between the electrical connector 302 and the FPC 301 and increasing the pull-out resistance of the FPC 301. After the data acquisition device 300 is connected to the BMS's female terminal 500 via the electrical connector 302, even under conditions of vibration, tension, and thermal expansion and contraction, the FPC 301 and the electrical connector 302 are less prone to loosening or contact failure, thus improving the reliability of the data acquisition device 300.

[0068] In some embodiments, refer to Figure 7 , Figure 8 and Figure 10 The collection device 300 also includes a reinforcing membrane 303, which is applied to the surface of the encapsulation area c2. The spike a1 located in the encapsulation area c2 punctures the reinforcing membrane 303.

[0069] The reinforcing film 303 can be, but is not limited to, using the same material as the insulating film 270, such as polymer materials like PI, PE, and PET. The reinforcing film 303 can be applied to both sides or one side of the wrapping area c2. In one embodiment, the reinforcing film 303 surrounds the periphery of the wrapping area c2. The reinforcing film 303 and the insulating layer 301a of the wrapping area c2 can be fixed to each other by means of adhesion or other methods.

[0070] The spikes a1 of the encapsulation area c2 pierce the reinforcing membrane 303, meaning that these spikes a1 pierce at least three membrane layers. The reinforcing membrane 303 enhances the strength of the encapsulation area c2. When these spikes a1 fold back and press against or pierce the encapsulation area c2, the bonding between them and the encapsulation area c2 is stronger, the connection strength is greater, and the pull-out resistance is better, further improving the pull-out resistance of FPC301.

[0071] Typically, the reinforcing membrane 303 covers the entire encapsulation area c2. In this case, the extent of the encapsulation area c2 can be determined by the area where the reinforcing membrane 303 is located.

[0072] It is worth noting that the arrangement of the window area c1 and the wrapping area c2 is quite flexible. For example, the window area c1 and the wrapping area c2 can be staggered along the width direction X of the FPC301. Another example is that the window area c1 is located inside the wrapping area c2. Yet another example is that the window area c1 and the wrapping area c2 are arranged alternately in the binding area. Of course, the arrangement of both can also adopt the schemes in the following embodiments.

[0073] In some embodiments, refer to Figure 7 and Figure 8 The window area c1 and the wrapping area c2 are arranged adjacent to each other along the extension direction Y, with the window area c1 located at the edge of the FPC301. Positioning the window area c1 at the tail edge of the FPC301 allows for the exposure of the conductive layer 301b by shortening the length of the insulating layer 301a, simplifying the processing of the FPC301. Furthermore, the positions of the window area c1 and the wrapping area c2 can accommodate the structure of a conventional electrical connector 302, reducing the cost of improving the acquisition device 300.

[0074] Understandably, compared to a conventional electrical connector 302, the length of the spike area formed by its spikes a1 is standard. When using a conventional electrical connector 302 in this application, the window size can be shortened so that part of the spike area of ​​the conventional electrical connector 302 is located in the enclosure area c2, and the remaining part is located in the window area c1, thus achieving the solution of the embodiment of this application. Of course, the length of its spike area can also be extended based on the conventional electrical connector 302 (by increasing the number of spikes a1 in each electrical connector portion 302a or the spacing between spikes a1), while keeping the size of the window area c1 of the conventional FPC 301 unchanged, so that the spikes a1 in the extended area pierce the enclosure area c2 adjacent to the window area c1, thus achieving the solution of the embodiment of this application.

[0075] Further in the embodiments, combined with Figure 8 , Figure 10 and Figure 11 It is understood that the conductive layer 301b includes multiple conductive strips b1 spaced at intervals along the width direction X of the FPC 301. Each electrical connector 302a is electrically connected to a conductive strip b1 via its spike a1, and different conductive strips b1 are connected to different electrical connectors 302a. Each electrical connector 302a includes a connector terminal a2, and the spikes a1 are arranged on the same side of the connector terminal a2. In each electrical connector 302a, the spike a1 farthest from the connector terminal a2 is the first spike a11, and the first spike a11 is located in the encapsulation area c2.

[0076] Understandably, the plug terminals a2 of each electrical plug portion 302a are located at the same end of the electrical plug 302 and are used together for plugging into the plug female terminal 500. In each electrical plug portion 302a, the plug terminal a2 and each spike a1 are electrically connected and are generally integrally formed.

[0077] All spikes a1 are arranged on the same side of the plug terminal a2. In the arrangement direction, the spike a1 farthest from the plug terminal a2 is the first spike a11. Generally, all spikes a1 are arranged on the same side of the plug terminal a2 in the extension direction Y, that is, the arrangement direction corresponds to the extension direction Y of FPC301.

[0078] In each electrical connector 302a, the number of first spikes a11 can be one or more. The first spike a11 pierces the wrapping area c2 and is fixed to it. Because the first spike a11 is fixedly connected to the wrapping area c2, the bonding strength between the FPC 301 and the electrical connector 302 is increased, and the pull-out resistance of the FPC 301 is improved. Furthermore, by using the first spike a11 to pierce and fix the wrapping area c2, it is easy to achieve staggering between the connector terminal a2 and the FPC 301, preventing interference between them and affecting the insertion operation of the connector terminal a2.

[0079] In a further embodiment, combined with Figure 10 and Figure 11 It is understood that the collection device 300 also includes a reinforcing membrane 303, which covers the surface of the wrapping area c2 and surrounds the first spike a11.

[0080] In other words, the first spike a11 pierces the reinforcing membrane 303 located in the wrapping area c2. Thus, the first spike a11 pierces at least three layers of membrane, further enhancing the connection strength between the first spike a11 and the wrapping area c2, and improving the pull-out resistance of FPC301.

[0081] In a further embodiment, reference continues to be made to... Figure 11 and Figure 12In each electrical connector 302a, the first spike a1 is the second spike a12, which is located adjacent to and closest to the first spike a11. The second spike a12 is located in both the wrapping area c2 and the window area c1.

[0082] Understandably, the second spike a12 is second only to the first spike a11 in distance from the plug terminal a2. Part of the second spike a12 pierces the wrapping area c2, and the remaining part pierces the window area c1. On one hand, the second spike a12 can be fixed to the wrapping area c2, which helps improve the pull-out resistance of the FPC 301. On the other hand, the portion of the second spike a12 located in the window area c1 helps ensure effective electrical contact between the second spike a12 and the conductive layer 301b, improving the connection reliability between the FPC 301 and the electrical plug 302.

[0083] Since part of the second spike a12 is located in the window region c1, all spikes a1 except for the first spike a11 and the second spike a12 are located in the window region c1.

[0084] It is worth noting that in other embodiments, more spikes a1 may be arranged in the wrapping area c2. Generally, in each electrical connector 302a, the number of spikes a1 located in the wrapping area c2 is less than the number of spikes a1 located in the window area c1, to ensure that the electrical connector 302a and the FPC 301 have sufficient electrical contact area, and to avoid electrical hazards caused by excessively high local resistance and temperature of the FPC 301 due to insufficient electrical contact area.

[0085] Further in the embodiments, refer to Figure 10 The reinforcing membrane 303 surrounds the second spike a12 located in the encapsulation area c2.

[0086] In other words, the second spike a12 pierces the reinforcing membrane 303. At this point, the second spike a12 has pierced at least three layers of membrane, and the bonding strength between the second spike a12 and the encapsulation area c2 is enhanced, further improving the pull-out resistance of FPC301.

[0087] In some embodiments, combined with Figure 11 and Figure 12 It is understood that each spike a1 of each electrical plug portion 302a is arranged sequentially along the extension direction Y of FPC301, and each pair of adjacent spikes a1 are arranged on both sides of the conductive strip b1.

[0088] For example, the first spike a11 is located on one side of the conductive strip b1, the second spike a12 is located on the other side of the conductive strip b1, and the third spike a1 is located on the same side as the first spike a11, and so on. The spikes a1 located in odd-numbered positions and the spikes a1 located in even-numbered positions are located on different sides of the same conductive strip b1, and the conductive strips b1 on both sides are arranged sequentially along the extension direction Y. That is, each spike a1 is arranged alternately on both sides of the conductive strip b1 along the extension direction Y.

[0089] In practical applications, each pair of adjacent spikes a1 fold back towards different sides of the conductive strip b1, which can lock together on the conductive strip b1. This not only makes the bonding force between the electrical plug 302a and the binding part 301c uniform, but also makes the bonding strength between the electrical plug 302a and the binding part 301c stronger, and the pull-out resistance of FPC301 stronger.

[0090] In some embodiments, refer to Figure 13 The FPC301 has a first binding part 301c-A and a second binding part 301c-B with a folded connection on the same end. The first binding part 301c-A and the second binding part 301c-B are spaced apart along the thickness direction Z of the FPC301, and both are pierced and fixed with multiple electrical plug-in parts 302a. The piercing direction of the electrical plug-in parts 302a on the first binding part 301c-A is the same as the piercing direction of the electrical plug-in parts 302a on the second binding part 301c-B.

[0091] The piercing direction of the electrical connector 302a refers to the direction in which the spike a1 pierces the binding part 301c, and this direction is along the thickness direction Z of the binding part 301c from one side to the other.

[0092] The first binding part 301c-A and the second binding part 301c-B are arranged side by side along the thickness direction Z of FPC301. Each part pierces and fixes multiple electrical plug parts 302a. All the electrical plug parts 302a on the two binding parts 301c together form an electrical plug 302, which makes the binding area between the electrical plug 302 and FPC301 larger. The risk of FPC301 detaching from the electrical plug 302 is drastically reduced, and the pull-out resistance of FPC301 is significantly improved.

[0093] By designing the piercing direction of the spikes a1 on the first binding part 301c-A and the second binding part 301c-B to be the same, the same structure of the electrical plug part 302a can be used, and the structure of the conventional electrical plug part 302 can be used to reduce the improvement cost.

[0094] In a further embodiment, refer to Figure 13The second binding part 301c-B is provided with a cutout c3, which passes through the second binding part 301c-B. The cutout c3 is an adaptive design for the structure of the conventional plug-in female terminal 500, which can avoid certain structures on the plug-in female terminal 500.

[0095] Furthermore, the data acquisition device 300 also includes a data acquisition terminal 304, which is electrically connected separately to the FPC 301. The FPC 301 acquires the operating data of the battery cell 200 through the data acquisition terminal 304. Of course, the data acquisition terminal 304 can also be integrated with the FPC 301.

[0096] In one specific embodiment of this application, the acquisition device 300 includes an FPC 301 and an electrical connector 302. One end of the FPC 301 is configured with a binding portion 301c, which includes a window area c1 and a wrapping area c2. The window area c1 is located at the edge of the FPC 301 in the extending direction Y, and the wrapping area c2 is located inside the window area c1. The electrical connector 302 includes a plurality of electrical connector portions 302a, which are arranged at intervals along the width direction X of the FPC 301. Each electrical connector portion 302a is provided with a plurality of spikes a1 arranged sequentially along the extending direction Y of the FPC 301, and each pair of adjacent spikes a1 are located on both sides of the conductive layer 301b. The spike a1 furthest from the plug terminal a2 of the electrical plug portion 302a is the first spike a11. The first spike a11 pierces the encapsulation area c2. The second spike a12 adjacent to the first spike a11 partially pierces the encapsulation area c2 and partially pierces the window area c1. The remaining spikes a1 pierce the window area c1. A reinforcing film 303 is provided on the encapsulation area c2, and the reinforcing film 303 is pierced by the first spike a11 and the second spike a12.

[0097] In addition, the battery 1000 proposed in this application embodiment includes a battery cell 200, a data acquisition device 300 in the above embodiment, an FPC 301 for connecting to the battery cell 200 to acquire voltage and / or temperature information, and an electrical connector 302 for transmitting the acquired information to the outside.

[0098] Specifically, the FPC301 can connect to the battery cell 200 via the acquisition terminal 304, which can be integrated with or separately connected to it, thereby acquiring the voltage and / or temperature information of the battery cell 200. In one embodiment, the acquisition terminal 304 is connected to the battery cell 200 via a bus 400.

[0099] The electrical connector 302 can connect to the BMS included in the battery 1000 to transmit the collected information to the BMS. The electrical connector 302 can also connect to a control device outside the battery 1000 to transmit the collected information to the control device outside the battery 1000, such as the vehicle's central control system.

[0100] The battery 1000 possesses all the beneficial effects described in the above embodiments, which will not be repeated here.

[0101] Furthermore, the power-consuming device 10000 in this application embodiment includes the aforementioned battery 1000 and possesses all the beneficial effects described in the above embodiments, which will not be repeated here.

[0102] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A data acquisition device (300), characterized in that, include: An FPC (301) includes a conductive layer (301b) and an insulating layer (301a), wherein the insulating layer (301a) is wrapped around the conductive layer (301b); the FPC (301) has a bonding portion (301c) at at least one end in its extension direction (Y), the bonding portion (301c) being divided into a window area (c1) and a wrapping area (c2); the conductive layer (301b) extends to the bonding portion (301c), and one side of the conductive layer (301b) in the window area (c1) is exposed; the conductive layer (301a) is covered on both sides of the conductive layer (301b) in the wrapping area (c2); and An electrical connector (302) includes a plurality of electrical connector portions (302a), each of the electrical connector portions (302a) including a plurality of spikes (a1), each of the spikes (a1) piercing and fixing to the binding portion (301c), each of the spikes (a1) being electrically connected to the conductive layer (301b) located in the binding portion (301c); a portion of the spikes (a1) of each electrical connector portion (302a) is located in the encapsulation area (c2), and the remaining portion of the spikes (a1) is located in the opening area (c1).

2. The data acquisition device (300) according to claim 1, characterized in that, The collection device (300) also includes a reinforcing membrane (303) which is applied to the surface of the encapsulation area (c2), and the spike (a1) located in the encapsulation area (c2) punctures the reinforcing membrane (303).

3. The data acquisition device (300) according to claim 1 or 2, characterized in that, The window area (c1) and the wrapping area (c2) are arranged adjacent to each other along the extension direction (Y), and the window area (c1) is located at the edge of the FPC (301).

4. The data acquisition device (300) according to claim 3, characterized in that, The conductive layer (301b) includes a plurality of conductive strips (b1) spaced apart along the width direction (X) of the FPC (301). Each of the electrical plugs (302a) is electrically connected to the conductive strips (b1) via its spikes (a1). The conductive strips (b1) connected to different electrical plugs (302a) are different. Each of the electrical connectors (302a) includes a connector terminal (a2), and each of the spikes (a1) is arranged on the same side of the connector terminal (a2); in each of the electrical connectors (302a), the spike (a1) furthest from the connector terminal (a2) is a first spike (a11), and the first spike (a11) is located in the enclosed area (c2).

5. The data acquisition device (300) according to claim 4, characterized in that, The collection device (300) further includes a reinforcing membrane (303) which covers the surface of the encapsulation area (c2) and surrounds the first spike (a11).

6. The data acquisition device (300) according to claim 5, characterized in that, In each of the electrical plug portions (302a), the first spike (a1) that is adjacent to and closest to the first spike (a11) is the second spike (a12), and the second spike (a12) is located in both the enclosed area (c2) and the window area (c1); The reinforcing membrane (303) surrounds the second spike (a12) located in the wrapping area (c2).

7. The data acquisition device (300) according to claim 4, characterized in that, Each of the spikes (a1) in each of the electrical plugs (302a) is arranged sequentially along the extension direction (Y), and each pair of adjacent spikes (a1) is arranged on different sides of the same conductive strip (b1).

8. The data acquisition device (300) according to claim 1 or 2, characterized in that, The FPC (301) has a first binding part (301c-A) and a second binding part (301c-B) with a folded connection at the same end. The first binding part (301c-A) and the second binding part (301c-B) are arranged at intervals along the thickness direction (Z) of the FPC (301), and both are pierced and fixed with a plurality of electrical plug-in parts (302a). The piercing direction of the electrical plug (302a) on the first binding part (301c-A) is the same as the piercing direction of the electrical plug (302a) on the second binding part (301c-B); The second binding part (301c-B) is provided with a hollow opening (c3), which penetrates the second binding part (301c-B).

9. A battery (1000), characterized in that, include: Battery cell (200); The data acquisition device (300) as described in any one of claims 1 to 8; The FPC (301) is used to connect to the battery cell (200) to collect voltage and / or temperature information, and the electrical connector (302) is used to transmit the collected information to the outside.

10. An electrical appliance (10000), characterized in that, Includes the battery (1000) as described in claim 9.

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