Temperature acquisition module and battery

Abstract

The present invention relates to a temperature acquisition module and a battery. The first temperature acquisition component and the second temperature acquisition component can be installed by snapping together a snap-fitting portion and a mating portion without the need for glue. Therefore, the temperature acquisition module will not become loose due to the temperature increase of the battery cell during operation. Moreover, the first temperature acquisition component and the second temperature acquisition component are in direct contact with the conductive element and the top cover of the battery cell, respectively, and the heat conduction path is relatively short. Therefore, the accuracy of temperature acquisition can be significantly improved. Moreover, when there is a cold solder joint between the pole and the conductive element of the battery cell or when it breaks due to impact during use, the path for heat conduction from the inside of the battery cell to the conductive element is blocked, thereby increasing the temperature difference between the conductive element and the top cover. It can be seen that the connection status between the pole and the conductive element can also be indicated based on the temperature difference collected by the first temperature acquisition component and the second temperature acquisition component.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a temperature acquisition module and a battery. Background Art

[0002] When battery cells are grouped, a temperature acquisition module needs to be set up to collect temperature in order to facilitate thermal management. At present, the temperature acquisition module is usually connected to the battery cell in the following two ways. One is to glue the temperature acquisition module to the top cover with glue. Since the temperature of the top cover will increase when the battery cell is working, the bonding performance of the glue will decrease under the influence of high temperature, which can easily cause the temperature acquisition module to become loose from the top cover, resulting in inaccurate temperature signals collected by the temperature acquisition module. The second is to arrange the temperature acquisition module on a nickel sheet, which is then connected to a conductive element. At this time, the heat conduction path is longer, and it will change when it is conducted to the temperature acquisition module, resulting in a certain deviation between the temperature collected by the temperature acquisition module and the actual temperature of the battery cell. Summary of the Invention

[0003] Based on this, it is necessary to provide a temperature acquisition module and a battery that can improve the accuracy of temperature acquisition in order to address the above problems.

[0004] A temperature acquisition module is used to be installed on a conductive element. The temperature acquisition module includes a first temperature acquisition component and a second temperature acquisition component. The first temperature acquisition component and the second temperature acquisition component can be respectively arranged on opposite sides of the conductive element. One of the first temperature acquisition component and the second temperature acquisition component is provided with a clamping portion, and the other is provided with a mating portion. The clamping portion can pass through the conductive element and be clamped with the mating portion, so that at least one of the first temperature acquisition component and the second temperature acquisition component can collect the temperature of one side of the conductive element.

[0005] In one embodiment, the first temperature acquisition assembly includes a first frame, a first sensor, and a first circuit board, the first sensor being mounted on the first frame and connected to the first circuit board; the second temperature acquisition assembly includes a second frame, a second sensor, and a second circuit board, the second sensor being mounted on the second frame and connected to the second circuit board, one of the first frame and the second frame being provided with the clamping portion, and the other being provided with the mating portion;

[0006] The first circuit board is arranged on a side of the first frame facing the conductive element to be thermally connected to the conductive element, and / or the second circuit board is arranged on a side of the second frame facing the conductive element to be thermally connected to the conductive element.

[0007] In one embodiment, the snap-fit ​​portion includes a buckle provided on the second frame, and the mating portion includes a slot formed on the first frame. The buckle can pass through the conductive element and fit into the slot, so that the first frame can be fixed to one side surface of the conductive element to collect the temperature of the conductive element.

[0008] In one embodiment, a protrusion is provided at the end of the buckle, and a groove is formed on the side of the first frame facing away from the second temperature collection component, so that the protrusion can be inserted into the groove when the buckle is snapped into the slot.

[0009] In one embodiment, an elastic pad is provided on a side of the second frame facing the first temperature acquisition component, and the elastic pad can abut against the conductive element so that the second temperature acquisition component is fixed to one side of the conductive element and is thermally insulated from the conductive element.

[0010] In one embodiment, the elastic pad is annular, and an annular groove is formed on the side of the second frame facing the first temperature collection component. The elastic pad is partially sleeved in the annular groove and partially protrudes from the annular groove.

[0011] In one embodiment, a second circuit board and a thermal pad are sequentially provided on a side of the second frame facing away from the first temperature acquisition component, so that the thermal pad is thermally connected to the second sensor.

[0012] In one embodiment, the temperature acquisition module further includes an output connecting plate, a first buffer portion and a second buffer portion, wherein the first buffer portion and the second buffer portion are spaced apart at one end of the output connecting plate and are respectively connected to the first circuit board and the second circuit board, and both the first buffer portion and the second buffer portion are capable of elastic deformation.

[0013] In one embodiment, the temperature acquisition module further includes an output connection board connected to both the first circuit board and the second circuit board, wherein the output connection board is provided with first and second circuits connected to the first circuit board and the second circuit board, respectively, spaced apart along its width direction;

[0014] The first circuit includes a plurality of first positive pins, a plurality of first negative pins, a first positive circuit and a first negative circuit. The first positive pins and the first negative pins are alternately arranged along the extension direction of the output connecting plate. The first positive circuit and the first negative circuit are arranged on both sides of the first positive pin and the first negative pin along the width direction of the output connecting plate to be connected to the plurality of first positive pins and the plurality of first negative pins, respectively.

[0015] A battery comprises a battery cell, a conductive element, and a temperature acquisition module as described in any one of the above embodiments, wherein the conductive element is connected to a terminal of the battery cell, a first temperature acquisition component and a second temperature acquisition component are respectively arranged on opposite sides of the conductive element, and a clamping portion passes through the conductive element to achieve clamping engagement with the mating portion, so that the temperature of one side of the conductive element is acquired by at least one of the first temperature acquisition component and the second temperature acquisition component.

[0016] In one embodiment, one of the first temperature collection component and the second temperature collection component collects the temperature of the conductive element, and the other is thermally connected to the top cover of the battery cell to collect the temperature of the top cover of the battery cell.

[0017] Compared with the existing technology, the above temperature acquisition module and battery have at least the following advantages:

[0018] 1. The first and second temperature acquisition assemblies can be installed by snapping together the engaging portion and the mating portion, eliminating the need for glue. Therefore, the temperature acquisition modules will not loosen due to the temperature rise of the battery cells during operation. Furthermore, the first and second temperature acquisition assemblies are in direct contact with the conductive element and the top cover of the battery cell, respectively, shortening the heat conduction path. This significantly improves temperature acquisition accuracy.

[0019] 2. When a poor solder joint exists between the battery cell's terminal and the conductive element, or when a fracture occurs due to impact during use, the path for heat transfer from the battery cell to the conductive element is blocked, increasing the temperature difference between the conductive element and the top cover. The first and second temperature acquisition assemblies can respectively collect the temperatures of the conductive element and the top cover, providing a more comprehensive understanding of the internal battery temperature distribution. The temperature difference between the two can also indicate the connection condition between the terminal and the conductive element. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 Schematic diagram of a partial structure of a battery in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the assembly relationship between the temperature acquisition module and the conductive element in the battery;

[0023] Figure 3 for Figure 2 The cross-sectional view along AA is shown;

[0024] Figure 4 This is a schematic diagram of the structure of a temperature acquisition module in one embodiment of the present invention;

[0025] Figure 5 for Figure 4 A schematic structural diagram of the first temperature acquisition component in the temperature acquisition module shown;

[0026] Figure 6 for Figure 4 A schematic structural diagram of the second temperature acquisition component in the temperature acquisition module shown;

[0027] Figure 7 for Figure 4 A cross-sectional view of the output connection plate in the temperature acquisition module is shown. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate 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 implementation methods.

[0034] See also Figure 1 and Figure 2 The present invention provides a battery 10 and a temperature acquisition module 300. The battery 10 in one embodiment of the present invention includes a battery cell 100, a conductive element 200 and a temperature acquisition module 300.

[0035] The battery cell 100 can be a lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery. Its outer contour can be flat, rectangular, or in other shapes, but is not limited thereto. Specifically, in this embodiment, the battery cell 100 is a lithium-ion prismatic battery. The battery cell 100 includes a top cover 110 , on which a terminal post 120 is disposed.

[0036] The conductive element 200 is used to connect the battery cells 100, thereby enabling series, parallel, or mixed connection of the battery cells 100. The conductive element 200 is connected to the terminal 120 of the battery cell 100, thereby achieving electrical connection with the battery cell 100. Typically, the conductive element 200 is welded to the terminal 120 of the battery cell 100. The conductive element 200 can be made of aluminum bars, with a thickness generally between 1 mm and 2 mm.

[0037] The temperature acquisition module 300 can be installed on the conductive element 200 and used to acquire the temperature of the corresponding battery cell 100. Specifically, each battery cell 100 is provided with at least one temperature acquisition module 300, so that the temperature signal can be acquired for each battery cell 100.

[0038] Furthermore, the battery 10 generally includes a flat flexible cable 400 and a connector 500 , with the connector 500 connected to the flat flexible cable 400 . The temperature acquisition module 300 on each battery cell 100 is electrically connected to the flat flexible cable 400 , thereby transmitting the collected temperature signal to the flat flexible cable 400 for aggregation. The connector 500 can be plugged into a battery management system (BMS) to transmit the aggregated temperature signal to the BMS for thermal management of the battery 10 .

[0039] Please also refer to Figure 3 and Figure 4 In one embodiment of the present invention, the temperature acquisition module 300 includes a first temperature acquisition component 310 and a second temperature acquisition component 320 .

[0040] Both the first temperature acquisition component 310 and the second temperature acquisition component 320 are capable of acquiring temperature signals. The first temperature acquisition component 310 and the second temperature acquisition component 320 are disposed on opposite sides of the conductive element 200, with the first temperature acquisition component 310 located on the side of the conductive element 200 facing away from the battery cell 100, and the second temperature acquisition component 320 located on the side of the conductive element 200 facing the battery cell 100.

[0041] During assembly, the first and second temperature collection assemblies 310 and 320 are first secured to the conductive element 200, and then the conductive element 200 is welded to the terminal 120 of the battery cell 100. Furthermore, the second temperature collection assembly 320 abuts against the top cover 110 of the battery cell 100. As can be seen, the first temperature collection assembly 310 is primarily used to collect temperature information from the conductive element 200, while the second temperature collection assembly 320 is primarily used to collect temperature information from the top cover 110 of the battery cell 100. Of course, in some embodiments, the second temperature collection assembly 320 can also collect temperature information from the conductive element 200.

[0042] After the temperature acquisition module 300 integrates two temperature acquisition components, even if one of the acquisition components fails, the other can continue to work, ensuring the continuity of temperature acquisition and avoiding the failure of the entire temperature monitoring system due to a single acquisition point failure, thereby improving the reliability and stability of temperature acquisition.

[0043] Because the first temperature collection component 310 and the second temperature collection component 320 are in direct contact with the conductive element 200 and the top cover 110 of the battery cell 100, respectively, the heat conduction path is shortened, and multi-point temperature measurement is achieved simultaneously. The temperature information collected by the first temperature collection component 310 and the second temperature collection component 320 can better reflect the temperature distribution inside the battery cell 100, avoiding the errors and one-sidedness caused by single-point measurement, and improving the accuracy and stability of temperature measurement.

[0044] Furthermore, if a cold weld exists between the terminal 120 and the conductive element 200 of the battery cell 100, or if the battery cell 100 breaks due to impact during use, the path for heat transfer from the interior of the battery cell 100 to the conductive element 200 is blocked, resulting in an increased temperature difference between the conductive element 200 and the top cover 110. Thus, the temperature difference collected by the first temperature collection component 310 and the second temperature collection component 320 can indicate the connection status between the terminal 120 and the conductive element 200. Specifically, when the temperature difference is within a preset range, it indicates that the connection between the terminal 120 and the conductive element 200 is normal. However, when the temperature difference exceeds the preset range, it indicates that the connection between the terminal 120 and the conductive element 200 is abnormal. Furthermore, if the collected temperature data differs, the first temperature collection component 310 and the second temperature collection component 320 can verify the data with each other. A preset algorithm can be used to determine the accuracy of the data from the first and second temperature collection components 310 and 320, or the two data can be combined to produce a result closer to the true value, thereby improving the accuracy of temperature measurement.

[0045] Furthermore, one of the first temperature acquisition component 310 and the second temperature acquisition component 320 is provided with a clamping portion 3211, and the other is provided with a matching portion 3111 (see Figure 5 Furthermore, the engaging portion 3211 can pass through the conductive element 200 and engage with the mating portion 3111. Therefore, the first temperature acquisition component 310 and the second temperature acquisition component 320 can be installed by the engaging portion 3211 and the mating portion 3111.

[0046] Specifically, the clamping portion 3211 is provided on the second temperature acquisition component 320, while the mating portion 3111 is provided on the first temperature acquisition component 310. Alternatively, the clamping portion 3211 can be provided on the first temperature acquisition component 310, while the mating portion 3111 is provided on the second temperature acquisition component 320. The conductive element 200 has a through-hole for the clamping portion 3211 to pass through. The shape of the through-hole matches that of the clamping portion 3211, and its opening should be slightly larger than the outer diameter of the clamping portion 3211 to ensure smooth passage of the clamping portion 3211.

[0047] More specifically, in this embodiment, the engaging portion 3211 includes a buckle, and the mating portion 3111 includes a slot. The buckle is capable of passing through the conductive element 200 and snapping into the slot. The buckles are typically provided in pairs and are capable of elastic deformation, with the slots corresponding to the buckles. During assembly, the buckles are subjected to an inward squeezing force as they pass through the conductive element 200 and into the slot, causing the buckles to move inward. Once the buckles have completely passed through the conductive element 200 and into the slot, the squeezing force disappears, and the buckles rebound, forming a secure grip with the slot, thereby securing the first temperature acquisition component 310 and the second temperature acquisition component 320 to the conductive element 200.

[0048] The integrated temperature acquisition module 300 is smaller and more compact, making it easier to install in limited spaces. Because the first and second temperature acquisition components 310, 320 can be installed by snapping together the engaging portion 3211 and the mating portion 3111, eliminating the need for adhesive bonding, the temperature acquisition module 300 will not loosen even if the battery cell 100 heats up during operation. The first and second temperature acquisition components 310, 320 maintain good contact with the conductive element 200 and the top cover 110 of the battery cell 100, further improving temperature acquisition accuracy. This also facilitates maintenance of the temperature acquisition module 300, enhancing the overall performance and reliability of the battery 10.

[0049] Please also refer to Figure 5 In this embodiment, the first temperature acquisition component 310 includes a first frame 311 , a first sensor 312 and a first circuit board 313 . The first sensor 312 is installed on the first frame 311 and connected to the first circuit board 313 .

[0050] The first frame 311 plays a supporting role and is generally formed of an insulating material such as polyethylene, polypropylene, etc. The first sensor 312 is used to convert the temperature signal into an electrical signal. Specifically, the first sensor 312 can use a thermistor. The resistance value of the thermistor is negatively correlated with the temperature, so the temperature can be sensed and measured by measuring the change in the resistance value of the thermistor. The first circuit board 313 can be a flexible circuit board, which is generally based on polyimide (PI) or polyester (PET) film and has high reliability and flexibility. The first circuit board 313 is electrically connected to the first sensor 312, and can ultimately be electrically connected to the flat flexible cable 400, so that the temperature signal collected by the first sensor 312 can be output.

[0051] Please also refer to Figure 6 The second temperature acquisition component 320 has a substantially identical structure to the first temperature acquisition component 310. Specifically, the second temperature acquisition component 320 includes a second frame 321, a second sensor 322, and a second circuit board 323. The second sensor 322 is mounted on the second frame 321 and connected to the second circuit board 323. The second frame 321 is also typically formed of an insulating material. The second sensor 322 can also be a thermistor, and the second circuit board 323 can also be a flexible circuit board. One end of the second circuit board 323 is connected to the second sensor 322, while the other end can be connected to a flat flexible cable 400, thereby outputting the temperature signal collected by the second sensor 322.

[0052] Specifically, the mating portion 3111 is formed on the first frame 311, and the snap-fit ​​portion 3211 is provided on the second frame 321. That is, a snap-fit ​​slot is formed on the first frame 311, and a snap-fit ​​is formed on the second frame 321. More specifically, in this embodiment, the first circuit board 313 is provided on the side of the first frame 311 facing the conductive element 200, so as to be thermally connected to the conductive element 200, so that the first sensor 312 on the first circuit board 313 can better detect the temperature information of the conductive element 200. The second circuit board 323 is provided on the side of the second frame 321 facing away from the conductive element 200, so as to be thermally connected to the top cover 110, so that the second sensor 322 on the second circuit board 323 can better detect the temperature information of the top cover 110.

[0053] Of course, in other embodiments, the second circuit board 323 may also be disposed on the side of the second frame 321 facing the conductive element 200 to provide a thermally conductive connection to the conductive element 200. In this manner, both the first sensor 312 and the second sensor 322 can effectively detect the temperature of the conductive element 200. The first sensor 312 and the second sensor 322 can respectively detect the temperatures of two opposing sides of the conductive element 200, thereby analyzing the temperature distribution of the conductive element 200 and detecting the connection between the conductive element 200 and the battery cell.

[0054] Furthermore, in this embodiment, a protrusion 3212 is provided at the end of the buckle, and a groove 3112 is formed on the side of the first frame 311 facing away from the second temperature collection assembly 320. When the buckle is engaged with the groove, the protrusion 3212 can be inserted into the groove 3112. The cooperation between the protrusion 3212 and the groove 3112 can improve the stability of the engagement between the buckle and the groove, thereby further enhancing the reliability of the installation of the first temperature collection assembly 310 and the second temperature collection assembly 320.

[0055] In this embodiment, the first frame 311 is configured to form a first accommodating cavity, and the first sensor 312 is accommodated in the first accommodating cavity. In other words, the first frame 311 is a hollow frame structure, and the first sensor 312 is located within the first frame 311, so that the first frame 311 can provide better protection.

[0056] Similarly, the second frame 321 is configured to form a second accommodating cavity, and the second sensor 322 is accommodated in the second accommodating cavity. Therefore, the second sensor 322 can also be well protected by the second frame 321.

[0057] Furthermore, in this embodiment, the first accommodating cavity is filled with a first potting compound 314, and the second accommodating cavity is filled with a second potting compound 324. The first potting compound 314 and the second potting compound 324 can respectively seal the first sensor 312 and the second sensor 322 within the first frame 311 and the second frame 321, thereby further protecting the first sensor 312 and the second sensor 322. Furthermore, the first potting compound 314 and the second potting compound 324 can also strengthen the connection between the first frame 311 and the second frame 321 and the first circuit board 313 and the second circuit board 323, respectively.

[0058] Please refer again Figure 3 and Figure 6 In this embodiment, an elastic pad 325 is provided on the side of the second frame 321 facing the first temperature collection component 310. The elastic pad 325 can abut against the conductive element 200, so that the second temperature collection component 320 is fixed to one side of the conductive element 200 and is thermally insulated from the conductive element 200.

[0059] The elastic pad 325 can be formed from materials such as silicone foam and rubber, giving it a certain degree of elasticity. When the engaging portion 3211 engages the mating portion 3111, the elastic pad 325 is squeezed and compressed, exerting a reaction force on the first and second temperature acquisition components 310 and 320, thereby strengthening the connection between the first and second temperature acquisition components 310 and 320. Furthermore, the tension exerted on the first temperature acquisition component 310 creates a closer contact with the conductive element 200, thereby reducing the thermal resistance between the first and second temperature acquisition components 310 and 200 and further improving temperature acquisition accuracy. Furthermore, the elastic pad 325 provides thermal insulation between the second temperature acquisition component 320 and the conductive element 200, minimizing interference from the thermally conductive element 200 when collecting temperature information on the top cover 110, thereby improving the accuracy of the temperature collected by the second temperature acquisition component 320.

[0060] Furthermore, in this embodiment, the elastic pad 325 is annular, and an annular groove (not marked in the figure) is formed on the side of the second frame 321 facing the first temperature collection component 310. The elastic pad 325 is partially sleeved in the annular groove and partially protrudes from the annular groove.

[0061] The elastic pad 325 is sleeved on the second frame 321 and partially accommodated in the annular groove, so it is easy to install and not prone to misalignment. It should be noted that the depth of the annular groove is generally less than the thickness of the elastic pad 325 to ensure that a portion of the elastic pad 325 can protrude from the annular groove and thus achieve direct contact with the conductive element 200.

[0062] In addition, in this embodiment, a thermal pad 326 is provided on the side of the second frame 321 facing away from the first temperature acquisition component 310 , and the second circuit board 323 and the thermal pad 326 are stacked so that the thermal pad 326 is thermally connected to the second sensor 322 .

[0063] The thermal pad 326 is in direct contact with the top cover 110 of the battery cell 100, thereby reducing the thermal resistance between the top cover 110 and the second sensor 322, so that the temperature collected by the second sensor 322 is closer to the actual temperature of the battery cell 100. Specifically, the thermal pad 326 can be formed from a material such as a thermally conductive adhesive. The thermal pad 326 also has a certain elasticity. When the thermal pad 326 contacts the top cover 110 of the battery cell 100, the thermal pad 326 can undergo elastic deformation, thereby filling the gap between the second temperature collection component 320 and the top cover 110 of the battery cell 100, achieving a good fit between the second sensor 322 and the top cover 110, thereby ensuring the accuracy of temperature collection. On the other hand, the elasticity of the thermal pad 326 can play a certain buffering role, reducing the impact of mechanical stress such as vibration or impact of the battery 10 on the second temperature collection component 320.

[0064] Please refer again Figure 4 、 Figure 5 and Figure 6 In this embodiment, the temperature acquisition module 300 also includes an output connecting plate 330, a first buffer portion 340 and a second buffer portion 350. The first buffer portion 340 and the second buffer portion 350 are spaced apart at one end of the output connecting plate 330 and are respectively connected to the first circuit board 313 and the second circuit board 323. The first buffer portion 340 and the second buffer portion 350 can both undergo elastic deformation.

[0065] Specifically, one end of the output connection plate 330 is connected to the first and second circuit boards 313, 323 via a first buffer portion 340 and a second buffer portion 350, respectively. The other end is used to connect to the flat flexible cable 400, thereby electrically connecting the first and second circuit boards 313, 323, and the flat flexible cable 400. The first and second buffer portions 340, 350 elastically deform to provide a buffer between the first and second circuit boards 313, 323, and the output connection plate 330, respectively. This prevents vibration and positional fluctuations of the first and second temperature acquisition components 310, 320 from being transmitted to the output connection plate 330, thereby preventing tears at the connection between the output connection plate 330 and the flat flexible cable 400.

[0066] More specifically, the first and second buffers 340 and 350 are capable of elastically deforming in the extension, width, and thickness directions of the output connecting plate 330 to optimize the buffering effect. The first and second buffers 340 and 350 can be configured in an S-, C-, or O-shape. Furthermore, a height difference exists between the first and second buffers 340 and 350 along the thickness direction of the output connecting plate 330 to prevent interference between them.

[0067] It should be noted that the output connecting plate 330, the first buffer portion 340, and the second buffer portion 350 can be a flexible circuit board structure integrally formed with the first circuit board 313 and the second circuit board 323. This can reduce solder joints and help reduce the size of the temperature acquisition module 300.

[0068] Also, please see Figure 7 In this embodiment, the output connection board 330 is provided with first and second circuit boards 331, 332 spaced apart along its width, connected to the first and second circuit boards 313, 323, respectively. The first circuit 331 includes a plurality of first positive pins 3311, a plurality of first negative pins 3312, a first positive circuit 3313, and a first negative circuit 3314. The first positive pins 3311 and the first negative pins 3312 are alternately arranged along the extension direction of the output connection board 330. The first positive circuits 3313 and the first negative circuits 3314 are provided on either side of the first positive pins 3311 and the first negative pins 3312 along the width direction of the output connection board 330 to connect to the plurality of first positive pins 3311 and the plurality of first negative pins 3312, respectively.

[0069] Similarly, the second circuit 332 includes a plurality of second positive pins 3321, a plurality of second negative pins 3322, a second positive circuit 3323, and a second negative circuit 3324. The second positive pins 3321 and the second negative pins 3322 are alternately arranged along the extension direction of the output connection plate 330. The second positive circuits 3323 and the second negative circuit 3324 are arranged on either side of the second positive pins 3321 and the second negative pin 3322 along the width direction of the output connection plate 330 to respectively connect to the plurality of second positive pins 3321 and the second negative pin 3322.

[0070] Both the first and second lines 331 and 332 need to be electrically connected to the flat flexible cable 400 to transmit the temperature signal. Specifically, the plurality of first positive pins 3311 and the plurality of first negative pins 3312 can be soldered to pads on the flat flexible cable 400, thereby electrically connecting the first positive and first negative lines 3313 and 3314 to the flat flexible cable 400. Similarly, the plurality of second positive and second negative pins 3321 and 3322 can be soldered to pads on the flat flexible cable 400, thereby electrically connecting the second positive and second negative lines 3323 and 3324 to the flat flexible cable 400.

[0071] Moreover, after the output connection board 330 is welded to the flat flexible cable 400, the multiple welding points thereon can be evenly distributed along the extension direction of the output connection board 330, so that the first circuit board 313 and the second circuit board 323 are pulled more evenly, thereby improving the pull-out resistance of the temperature acquisition module 300, increasing the overall strength and preventing warping.

[0072] Furthermore, because the first positive pins 3311 and the first negative pins 3312 are staggered along the length of the output connection plate 330, they can share space along the width of the output connection plate 330. Similarly, the second positive pins 3321 and the second negative pins 3322 can also share space along the width of the output connection plate 330. This further reduces the width of the output connection plate 330, reducing the space occupied by the flat flexible cable 400.

[0073] Typically, the first positive pin 3311 and the first negative pin 3312 are arranged in a row near one edge of the width direction of the output connection plate 330. The second positive pin 3321 and the second negative pin 3322 are also arranged in a row near the other edge of the width direction of the output connection plate 330, thereby preventing interference between the first circuit 331 and the second circuit 332.

[0074] Furthermore, in this embodiment, the surface of the output connecting plate 330 is covered with an insulating layer, and windows (not marked in the figure) are opened in the insulating layer corresponding to each first positive pin 3311, each first negative pin 3312, each second positive pin 3321 and each second negative pin 3322. Each first positive pin 3311, each first negative pin 3312, each second positive pin 3321 and each second negative pin 3322 are exposed from the corresponding window and form a gap between themselves and the inner wall of the window.

[0075] The first positive pin 3311, the first negative pin 3312, the second positive pin 3321, and the second negative pin 3322 are exposed through the window, preventing them from protruding from the surface of the output connection plate 330. This provides a certain degree of protection for the first positive pin 3311, the first negative pin 3312, the second positive pin 3321, and the second negative pin 3322. Furthermore, because a gap is formed between the first positive pin 3311, the first negative pin 3312, the second positive pin 3321, and the second negative pin 3322 and the inner wall of the window, solder can flow into this gap during welding, thereby ensuring a secure weld.

[0076] Specifically, the first positive pin 3311, the first negative pin 3312, the second positive pin 3321 and the second negative pin 3322 can all be set to be arc-shaped, and the window is set to be rectangular, so the first positive pin 3311, the first negative pin 3312, the second positive pin 3321 and the second negative pin 3322 can naturally form a gap with the inner wall of the window, and can improve their own tensile strength.

[0077] It should be noted that, in other embodiments, the required gap may be formed by setting the sizes of the first positive pin 3311 , the first negative pin 3312 , the second positive pin 3321 and the second negative pin 3322 to be slightly smaller than the size of the window.

[0078] The battery 10 and temperature acquisition module 300, including the first and second temperature acquisition components 310 and 320, can be assembled by snapping the engaging portion 3211 into the mating portion 3111, without the need for glue. Therefore, the temperature acquisition module 300 will not become loose due to the temperature increase of the battery cell 100 during operation. Furthermore, the first and second temperature acquisition components 310 and 320 are in direct contact with the conductive element 200 and the top cover 110 of the battery cell 100, respectively, shortening the heat conduction path. This significantly improves the accuracy of temperature acquisition. Furthermore, the first and second temperature acquisition components 310 and 320 can respectively acquire the temperatures of the conductive element 200 and the top cover 110 of the battery cell 100, providing a more comprehensive understanding of the internal temperature distribution of the battery 10. The temperature difference between the two locations can also indicate the connection between the terminal 120 of the battery cell 100 and the conductive element 200.

[0079] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0080] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A temperature acquisition module (300), adapted to be mounted on a conductive element (200), wherein the conductive element (200) is connected to a pole of a battery cell (100), characterized in that: The temperature acquisition module (300) comprises a first temperature acquisition component (310) and a second temperature acquisition component (320). The first temperature acquisition component (310) and the second temperature acquisition component (320) can be respectively arranged on opposite sides of the conductive element (200). One of the first temperature acquisition component (310) and the second temperature acquisition component (320) is provided with a clamping portion (3211), and the other is provided with a matching portion (3111). The clamping portion (3211) can pass through the conductive element (200) and be clamped with the matching portion (3111), so that at least one of the first temperature acquisition component (310) and the second temperature acquisition component (320) can collect the temperature of one side of the conductive element (200), and the one close to the battery cell (100) can collect the temperature of the top cover of the battery cell (100).

2. The temperature acquisition module (300) according to claim 1, characterized in that: The first temperature acquisition component (310) comprises a first frame (311), a first sensor (312) and a first circuit board (313); the first sensor (312) is mounted on the first frame (311) and connected to the first circuit board (313); the second temperature acquisition component (320) comprises a second frame (321), a second sensor (322) and a second circuit board (323); the second sensor (322) is mounted on the second frame (321) and connected to the second circuit board (323); one of the first frame (311) and the second frame (321) is provided with the clamping portion (3211), and the other is provided with the matching portion (3111); The first circuit board (313) is arranged on a side of the first frame (311) facing the conductive element (200) to be thermally connected to the conductive element (200), and / or the second circuit board (323) is arranged on a side of the second frame (321) facing the conductive element (200) to be thermally connected to the conductive element (200).

3. The temperature acquisition module (300) according to claim 2, characterized in that: The snap-fit ​​portion (3211) includes a snap fastener provided on the second frame (321), and the mating portion (3111) includes a slot formed on the first frame (311). The snap fastener can pass through the conductive element (200) and snap into the slot, so that the first frame (311) can be fixed to a side surface of the conductive element (200) to collect the temperature of the conductive element (200).

4. The temperature acquisition module (300) according to claim 3, characterized in that: A protrusion (3212) is provided at the end of the buckle, and a groove (3112) is formed on the side of the first frame (311) facing away from the second temperature collection component (320), so that the protrusion (3212) can be inserted into the groove (3112) when the buckle is snapped into the slot.

5. The temperature acquisition module (300) according to any one of claims 2 to 4, characterized in that: An elastic pad (325) is provided on a side of the second frame (321) facing the first temperature collection component (310), and the elastic pad (325) is capable of abutting against the conductive element (200), so that the second temperature collection component (320) is fixed to one side of the conductive element (200) and is thermally insulated from the conductive element (200).

6. The temperature acquisition module (300) according to claim 5, characterized in that: The elastic pad (325) is annular, and an annular groove is formed on the side of the second frame (321) facing the first temperature collection component (310). The elastic pad (325) is partially sleeved in the annular groove and partially protrudes from the annular groove.

7. The temperature acquisition module (300) according to any one of claims 2 to 4, characterized in that: A second circuit board (323) and a thermal pad (326) are sequentially provided on a side of the second frame (321) facing away from the first temperature acquisition component (310), so that the thermal pad (326) is thermally connected to the second sensor (322).

8. The temperature acquisition module (300) according to any one of claims 2 to 4, characterized in that: The temperature acquisition module (300) further comprises an output connection plate (330), a first buffer portion (340) and a second buffer portion (350), wherein the first buffer portion (340) and the second buffer portion (350) are spaced apart and arranged at one end of the output connection plate (330), and are respectively connected to the first circuit board (313) and the second circuit board (323), and the first buffer portion (340) and the second buffer portion (350) are both capable of elastic deformation.

9. The temperature acquisition module (300) according to claim 2, characterized in that: The temperature acquisition module (300) further comprises an output connection board (330) connected to both the first circuit board (313) and the second circuit board (323); the output connection board (330) is provided with first circuits (331) and second circuits (332) connected to the first circuit board (313) and the second circuit board (323) respectively, spaced apart along its width direction; The first circuit (331) includes a plurality of first positive pins (3311), a plurality of first negative pins (3312), a first positive circuit (3313) and a first negative circuit (3314); the first positive pins (3311) and the first negative pins (3312) are alternately arranged along the extension direction of the output connecting plate (330); the first positive circuit (3313) and the first negative circuit (3314) are arranged on both sides of the first positive pin (3311) and the first negative pin (3312) along the width direction of the output connecting plate (330) to be connected to the plurality of first positive pins (3311) and the plurality of first negative pins (3312), respectively.

10. A battery (10), characterized in that The invention comprises a battery cell (100), a conductive element (200), and a temperature acquisition module (300) as claimed in any one of claims 1 to 9, wherein the conductive element (200) is connected to a pole of the battery cell (100), the first temperature acquisition component (310) and the second temperature acquisition component (320) are respectively arranged on opposite sides of the conductive element (200), and the clamping portion (3211) passes through the conductive element (200) and is clamped with the matching portion (3111), so that the temperature of one side of the conductive element (200) is collected by at least one of the first temperature acquisition component (310) and the second temperature acquisition component (320).

11. The battery (10) according to claim 10, characterized in that One of the first temperature collection component (310) and the second temperature collection component (320) collects the temperature of the conductive element (200), and the other is thermally connected to the top cover of the battery cell (100) to collect the temperature of the top cover of the battery cell (100).

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