Battery cell, battery pack, and automobile

Abstract

This utility model discloses a battery cell, a battery pack, and an automobile. The battery cell includes a cover plate and a data acquisition assembly. The outer surface of the cover plate has terminals. The data acquisition assembly includes at least one acquisition plate with a through hole for the terminals to pass through. At least one contact point is disposed within the through hole to contact the terminals. The acquisition plate is electrically connected to the terminals via the contact point to acquire data from the battery cell. This utility model integrates the acquisition plate and the cover plate, reducing the number of separate components in the battery structure. Simultaneously, the power supply line of the acquisition plate is directly electrically connected to the terminals through the through hole, avoiding the use of external wiring harnesses and effectively reducing the risks associated with incorrect insertion, loosening, or aging of the wiring harness. Furthermore, because the contact point is in close contact with the terminals, the measurement accuracy and stability are significantly improved, ensuring reliable acquisition and transmission of battery cell data and providing a more reliable guarantee for subsequent battery management and safety monitoring.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery cell, a battery pack, and an automobile. Background Technology

[0002] In a Battery Management System (BMS), individual cell voltage sampling is one of the most fundamental and critical functions. The accuracy of voltage sampling directly affects the formulation of battery management strategies. However, common open-circuit faults during sampling can lead to inaccurate voltage sampling data, resulting in misjudgments in management strategies. Such misjudgments may cause overcharging or over-discharging of individual cells, or even trigger malfunctions in battery pack control, severely impacting the overall lifespan of the battery pack and the normal operation of the vehicle.

[0003] To address this issue, various improvement schemes have been proposed in related technologies, but most of them require additional hardware wiring or complex circuit design, and cannot fundamentally eliminate the risks caused by sampling line breaks. Utility Model Content

[0004] The main purpose of this utility model is to propose a battery cell that aims to solve the problem of external hardware wiring or complex circuit design.

[0005] To achieve the above objectives, this utility model proposes a battery cell, which includes a cover plate and a collection component. The outer surface of the cover plate is provided with an electrode post. The collection component includes at least one collection plate, which is sleeved on the electrode post. The collection plate is provided with a through hole for the electrode post to pass through. At least one contact point is provided in the through hole to contact the electrode post. The collection plate is electrically connected to the electrode post through the contact point.

[0006] In some embodiments, the electrode post includes a positive electrode post and a negative electrode post, the acquisition board includes a first acquisition board and a second acquisition board; the through hole includes a first through hole disposed on the first acquisition board and a second through hole disposed on the second acquisition board, and the contact includes a first contact disposed in the first through hole and a second contact disposed in the second through hole;

[0007] The positive terminal passes through the first through hole and contacts at least one of the first contacts; the negative terminal passes through the second through hole and contacts at least one of the second contacts.

[0008] In some embodiments, the acquisition component further includes a first signal acquisition line, and the first acquisition board and the second acquisition board are electrically connected through the first signal acquisition line.

[0009] In some embodiments, the acquisition component further includes a negative side voltage acquisition line and a positive side voltage acquisition line laid on the surface of the cover plate, wherein the negative side voltage acquisition line is connected to the second acquisition board and the positive side voltage acquisition line is connected to the first acquisition board.

[0010] In some embodiments, a filler is further included, the filler being annular and disposed between the acquisition plate and the electrode post, and the sidewall of the filler being provided with a clearance hole to avoid the contact point.

[0011] In some embodiments, a fixing post is horizontally arranged inside the through hole; one end of the fixing post is fixedly connected to the inner wall of the through hole, and the other end extends toward the center of the through hole; the fixing post passes through the clearance hole and abuts against the pole post; the fixing post is hollow; the contact point is located inside the fixing post and at the end where the fixing post abuts against the pole post.

[0012] In some embodiments, the filler is a positive electrode filler and a negative electrode filler, wherein the positive electrode filler is integrally formed with the first acquisition plate; and the negative electrode filler is integrally formed with the second acquisition plate.

[0013] In some embodiments, the acquisition board is provided with a signal acquisition unit and a signal transmission unit, and the signal acquisition unit and the signal transmission unit are electrically connected to the pole through the contact.

[0014] This utility model further proposes a battery pack, including the battery cells of the aforementioned embodiments.

[0015] The present invention further proposes an automobile including the battery pack of the aforementioned embodiments.

[0016] The beneficial effects of this utility model are as follows: by integrating the acquisition board and the cover plate together, the number of separate components in the traditional battery structure is reduced. Simultaneously, the power supply line of the acquisition board is directly electrically connected to the terminal post through a through-hole, avoiding the use of external wiring harnesses. This design reduces electrical faults caused by wiring harness breakage, poor contact, and other problems, improving the reliability and durability of the electrical connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the top cover structure of the battery cell in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the battery cell structure in one embodiment of the present invention.

[0019] Explanation of icon numbers:

[0020] 10. Cover plate;

[0021] 100. Acquisition component; 110. Acquisition board; 110a. First acquisition board; 110b. Second acquisition board;

[0022] 120. Signal acquisition unit; 122. Signal transmission unit;

[0023] 130, Through hole; 130a, First through hole; 130b, Second through hole;

[0024] 140. Fixed column;

[0025] 141, contact; 141a, first contact; 141b, second contact;

[0026] 150, terminal post; 150a, positive terminal post; 150b, negative terminal post;

[0027] 200, Filler; 201, Positive electrode filler; 202, Negative electrode filler; 200a, Clearance hole;

[0028] 400. First signal acquisition line;

[0029] 500, Negative side voltage acquisition line; 501, Positive side voltage acquisition line;

[0030] 20. Outer shell.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] In the use of electric vehicles and energy storage systems, voltage sampling failure is often one of the main hidden dangers leading to inaccurate battery management. Among them, the most common failure is the open circuit of the sampling line. Once the line is broken, it will not only cause the voltage sampling data to be distorted, but may also lead to misjudgment of the management strategy, resulting in overcharging or over-discharging of individual batteries, or even causing the control of the entire battery pack to malfunction, which will seriously affect the battery life and normal vehicle operation. To solve this problem, although various improvement solutions have been proposed in the prior art, most of them require complex external hardware wiring or circuit design, which is difficult to fundamentally eliminate the risk of line breakage. Based on this, this utility model starts from the battery structure design. Through the deep integration of the acquisition component 100, cell cover plate 10 and electrical connection method, it provides a more stable, compact and easy-to-assemble battery structure, thereby effectively improving the reliability and safety of voltage sampling.

[0037] For details, please refer to Figure 1 and Figure 2 This utility model embodiment proposes a battery cell, which includes a cover plate 10 and a data acquisition component 100. The outer surface of the cover plate 10 is provided with a terminal post 150. The data acquisition component 100 includes at least one data acquisition plate 110, which is sleeved on the terminal post 150. The data acquisition plate 110 is provided with a through hole 130 for the terminal post 150 to pass through. At least one contact point 141 is provided in the through hole 130 to contact the terminal post 150. The data acquisition plate 110 is electrically connected to the terminal post 150 through the contact point 141 to acquire data from the battery cell.

[0038] In this embodiment, the cover plate 10 is mainly used for external protection of the battery cell. The cover plate 10 is typically located on top of the battery cell, protecting the internal components from the influence of the external environment. To meet different application requirements, the cover plate 10 can be made of metal materials (such as aluminum alloy or stainless steel) or engineering plastic materials (such as PPS, PC, etc.), thus possessing both high mechanical strength and good corrosion resistance. Compared to traditional battery structures, this embodiment improves the accuracy and efficiency of data acquisition by embedding the data acquisition components 100 on the cover plate 10 into a single battery cell. Specifically, the data acquisition component 100 includes at least one acquisition plate with through holes for the terminals to pass through. Contact points that can contact the terminals are located within these through holes. The acquisition plate is electrically connected to the terminals via these contacts to obtain the battery cell's voltage, temperature, or other data. By integrating the acquisition plate with the cover plate 10, the number of information acquisition components in traditional battery structures is reduced. Simultaneously, the power supply line of the acquisition plate is directly electrically connected to the terminals through the through holes, avoiding the use of external wiring harnesses and effectively simplifying the overall structure.

[0039] In the specific implementation process, through holes can be first opened at preset positions on the cover plate 10, and the electrode post 150 can be inserted through the outer surface of the cover plate 10; then, at least one acquisition plate is installed on the cover plate 10 with fasteners, so that the through holes on the acquisition plate correspond to the electrode post, and at the same time, it is ensured that the contacts can reliably contact the electrode post. It should be noted that the fasteners in this embodiment can be positive electrode filler 200 or negative electrode filler 202;

[0040] Furthermore, various sensor circuits or conductive circuits can be integrated on the acquisition board, and the contacts can be fixed inside the through holes, allowing them to fit tightly against the electrode surface after the cover plate 10 is assembled, thereby enabling real-time data acquisition of the battery cell. If multiple electrical signal acquisitions are required in a specific structure, multiple through holes and corresponding contacts can be set on the same or different acquisition boards to meet various sensor or measurement needs.

[0041] The beneficial effects of this utility model's technical solution are as follows: By integrating the acquisition board and the cover plate 10 together, the number of information acquisition components in traditional battery structures is reduced, which not only improves structural compactness but also simplifies assembly and maintenance. Simultaneously, the power supply line of the acquisition board is directly connected to the terminal post through a through-hole, avoiding the use of external wiring harnesses and effectively reducing the risks associated with incorrect wiring, loosening, or aging. Furthermore, because the contacts are in close contact with the terminal post, measurement accuracy and stability are significantly improved, ensuring reliable acquisition and transmission of cell data and providing a more reliable guarantee for subsequent battery management and safety monitoring.

[0042] In the aforementioned embodiments, a data acquisition board can be installed on either the positive terminal 150a or the negative terminal 150b to collect cell information. For a more comprehensive approach, data acquisition boards can be installed on both the positive terminal 150a and the negative terminal 150b. For further details, please refer to the following documentation. Figure 1 In this embodiment, the electrode post 150 includes a positive electrode post 150a and a negative electrode post 150b; the acquisition plate 110 includes a first acquisition plate 110a and a second acquisition plate 110b; the through hole 130 includes a first through hole 130a disposed on the first acquisition plate 110a and a second through hole 130b disposed on the second acquisition plate 110b; and the contact includes a first contact 141a disposed in the first through hole 130a and a second contact 141b disposed in the second through hole 130b.

[0043] The positive terminal 150a passes through the first through hole 130a and contacts at least one first contact 141a; the negative terminal 150b passes through the second through hole 130b and contacts at least one second contact 141b.

[0044] In this embodiment, to achieve more comprehensive and reliable data acquisition of the battery cell, acquisition boards are respectively installed on the positive terminal 150a and the negative terminal 150b. To enable these two acquisition boards to work together, the acquisition assembly further includes a first signal acquisition line 400. The first acquisition board 110a and the second acquisition board 110b are electrically connected through the first signal acquisition line 400, which is used to supply power to the first acquisition board 110a and the second acquisition board 110b, and simultaneously realize synchronous data acquisition of the positive and negative terminals.

[0045] Thus, by setting the first acquisition board 110a and the second acquisition board 110b on the positive terminal 150a and the negative terminal 150b at the top of the battery cell, respectively, the monitoring coverage of the battery cell data can be effectively improved, and signals generated by different polarities can be collected and managed separately. Furthermore, the contacts 141 inside the first acquisition board 110a and the second acquisition board 110b can reliably contact the terminal 150, achieving accurate acquisition and output of real-time signals. Since the first signal acquisition line 400 electrically connects the first acquisition board 110a and the second acquisition board 110b, it can realize data interaction between the two acquisition boards and provide the necessary power supply path. Specifically, since each acquisition board can only obtain a single-pole voltage from the terminal it is fitted with, it must be connected to the other terminal through the first signal acquisition line to form a complete electrical circuit and meet normal power supply requirements. If only a single acquisition board is used, the first signal acquisition line 400 can be connected to the opposite terminal of the corresponding terminal 150 to complete the circuit power supply and information transmission functions.

[0046] See Figure 1In this embodiment, the acquisition component 100 further includes a negative side voltage acquisition line 500 and a positive side voltage acquisition line 501 laid on the surface of the cover plate 10. The negative side voltage acquisition line 500 is connected to the second acquisition board 110b, and the positive side voltage acquisition line 501 is connected to the first acquisition board 110a.

[0047] In this embodiment, by adding edge voltage acquisition lines to the surface of the cover plate 10, the voltage at the edge of the battery cell can be detected, avoiding local deviations caused by acquiring voltage only from the main terminal or a single contact 141. In some application scenarios, the edge of the battery may have small but significant voltage differences due to structural or environmental factors. Therefore, by arranging the positive electrode edge voltage acquisition line 501 and the negative electrode edge voltage acquisition line 500 in the corresponding area of ​​the cover plate 10 and connecting them to the acquisition board, the comprehensiveness and accuracy of data monitoring can be further improved.

[0048] In this embodiment, to further improve the installation structure of the acquisition board, the battery cell also includes a filler 200. The filler 200 is annular and located between the acquisition board 110 and the terminal post 150. The side wall of the filler 200 is provided with a clearance hole 200a for the clearance contact 141.

[0049] In the actual assembly process, the filler 200 can be aligned with the pole post 150 and inserted into the through hole of the first acquisition plate 110. At this time, the contact 141 can be set at the end of the clearance hole 200a that abuts against the pole post 150 and is electrically connected to the pole post 150. It should be noted that the contact 141 can be partially set in the clearance hole 200a and the other part can extend out to abut against the pole post 150 to achieve electrical connection. Then, a cable can be set inside the clearance hole 200a, and the contact 141 is electrically connected to the acquisition plate 110 through the cable to achieve power supply and parameter acquisition.

[0050] Continue reading Figure 1 In this embodiment, a fixing post 140 is horizontally arranged inside the through hole 130. The fixing post 140 passes through the clearance hole 200a and abuts against the pole post 150. The fixing post 140 is hollow. The contact point 141 is located inside the fixing post 140 and is located at the end where the fixing post 140 abuts against the pole post 150.

[0051] In this embodiment, a fixing post 140 is horizontally arranged within the through hole 130 in the cover plate 10, and the contact 141 protrudes through the fixing post 140, thus effectively supporting the contact 141. Specifically, one end of the fixing post 140 is fixedly connected to the inner wall of the through hole 130, and the other end of the fixing post 140 extends towards the center of the through hole 130. The fixing post 140 and the through hole 130 fit tightly together, ensuring stable contact between the contact 141 and the terminal post 150 during use. Compared to simply setting the contact 141 in the through hole 130, adding the fixing post 140 enhances the positioning and stability of the contact 141 during installation and use, preventing the contact 141 from shifting or loosening in vibration or impact environments.

[0052] Specifically, a fixing post 140 is first installed at the through hole 130 reserved in the cover plate 10. The fixing post 140 can be made of metal or high-strength engineering plastic to ensure sufficient bending and impact resistance. Subsequently, the contact 141 can be installed inside or on the surface of the fixing post 140 through the through hole or slot reserved in the fixing post 140, so that the end of the contact 141 extends from the periphery of the fixing post 140 and connects with the electrode post. When the cell is energized or measured, the contact 141 can transmit signals through the fixing post 140 and reliably connect with the electrode post, ensuring accurate acquisition and stable transmission of cell data.

[0053] It should be noted that the contact 141 referred to in this embodiment can be a metal contact, a metal wire, or a structural component whose surface has been treated with conductivity. In specific implementations, different installation methods for the contact 141 can be selected according to the requirements for electrical performance and process reliability.

[0054] If the fixing post 140 is a hollow structure, a portion of the contact 141 can be located inside the fixing post 140, and the other end of the contact 141 can extend from one end of the fixing post 140 and contact the pole post 150. This method can better protect the contact 141 and reduce the risk of the contact 141 being contaminated or worn by the external environment.

[0055] When the fixing post 140 is solid or it is inconvenient to make holes, contacts 141 can be formed on the outer surface of the fixing post 140 by electroplating or other conductive coatings, so that the contacts 141 are directly distributed on the surface of the fixing post 140 and are attached to or in contact with the pole post 150 after the fixing post 140 is installed.

[0056] With the above-described installation structure, when the battery cell is energized or being measured, the contact 141 can transmit and stably acquire electrical signals related to the electrode post 150 through the fixing post 140, thereby ensuring real-time data acquisition and reliable transmission of the battery cell. On the one hand, the stable positioning of the fixing post 140 within the through hole enhances the contact accuracy and contact area between the contact 141 and the electrode post 150; on the other hand, the use of through-hole or surface-plated contact installation methods can significantly reduce the risk of wire breakage, poor contact, or incorrect wire harness insertion, thereby improving the accuracy and reliability of data acquisition.

[0057] Furthermore, multiple contacts 141 can be provided. By designing multiple contacts 141 in a distributed manner, the contact area with the terminal 150 can be increased, thereby improving the contact reliability between the contacts 141 and the terminal 150, while effectively reducing contact resistance and localized heating, and improving the stability of data acquisition and current transmission. Specifically, multiple contacts 141 can also form a certain degree of redundancy among themselves. When one contact 141 suffers from poor contact due to external force or environmental factors, other contacts 141 can still ensure the accurate acquisition and transmission of cell data, improving the reliability and service life of the entire battery system.

[0058] Further reading Figure 1 In this embodiment, the filler 200 consists of a positive electrode filler 201 and a negative electrode filler 202. The positive electrode filler 201 is integrally formed with the first acquisition plate 110a, and the negative electrode filler 202 is integrally formed with the second acquisition plate 110b.

[0059] In this embodiment, the positive electrode filler 201 and the first acquisition plate 110a, and the negative electrode filler 202 and the second acquisition plate 110b can be integrally molded using injection molding. Specifically, the first acquisition plate 110a and the second acquisition plate 110b are respectively installed at the positions of the positive electrode post 150a and the negative electrode post 150b. At this time, the contact 141 needs to be adjusted to ensure that it correctly abuts against the corresponding electrode post. Then, resin or silicone is injected for filling, and after solidification, the corresponding positive electrode filler 201 and negative electrode filler 202 are formed. In this way, the injection molding integral design can effectively reduce assembly errors, simplify the production process, and enhance the overall structural stability and shock resistance, thereby providing a better guarantee for the efficient operation and service life of the battery cell.

[0060] Continue reading Figure 1 In this embodiment, the acquisition board 110 is provided with a signal acquisition unit 120 and a signal transmission unit 122. The signal acquisition unit 120 and the signal transmission unit 122 are electrically connected to the pole post 150 through the contact 141. The signal acquisition unit 120 and the signal transmission unit 122 obtain working power through the contact 141.

[0061] In this embodiment, the acquisition board integrates a signal acquisition unit 120 and a signal transmission unit 122, which are used to perform the detection of battery cell parameters and the transmission of data, respectively. Specifically, a plurality of contacts 141 are set on the acquisition board, and a portion of the contacts 141 are connected to the signal acquisition unit 120 to supply power to the signal acquisition unit 120 and receive relevant signals from the battery cell; another portion of the contacts 141 are connected to the signal transmission unit 122 to supply power to the signal transmission unit 122 so that the acquired data can be processed or converted and then transmitted to an external device. In this way, the different contacts 141 have a clear division of functions, effectively improving the stability of signal processing and transmission efficiency.

[0062] Through the aforementioned allocation of contacts 141, this embodiment can simultaneously meet the requirements for acquiring and transmitting battery cell information on a single acquisition board, avoiding the problems of excessive signal lines or complex wiring, which is beneficial for simplifying the assembly process and improving system reliability. Furthermore, since contacts 141 are connected in zones for different functions, the possibility of signal interference between them is minimized, improving the accuracy and anti-interference capability of data acquisition and transmission, and providing more efficient and stable technical support for online monitoring and subsequent management of battery cells.

[0063] The present invention further proposes a battery pack, including the aforementioned battery cell. The specific structure of the battery cell is as described in the above embodiments. Since the present battery pack adopts all the technical solutions of all the above embodiments, it has at least all the technical effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0064] Specifically, by integrating the data acquisition component 100, the side voltage acquisition line, and the positive and negative electrode fillers 202 onto the cell cover plate 10, the overall structure of the battery pack is greatly simplified, avoiding the problems of numerous external wiring harnesses and complex wiring in traditional batteries. The stable contact between the contact 141 and the terminal post significantly improves the accuracy of data acquisition and transmission, providing a reliable online monitoring foundation for the subsequent battery management system. Meanwhile, the assembly method using the injection-molded one-piece filler 200 enhances assembly efficiency and stability, and effectively reduces the risks of poor contact and loosening caused by assembly errors or vibration impacts. In summary, the battery pack of this embodiment achieves significant improvements in structural compactness, safety, reliability, and production efficiency, providing more comprehensive technical support for the large-scale application and subsequent maintenance of batteries.

[0065] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A battery cell, characterized in that, The device includes a cover plate and a data acquisition assembly. The outer surface of the cover plate is provided with an electrode post. The data acquisition assembly includes at least one data acquisition plate, which is sleeved on the electrode post. The data acquisition plate is provided with a through hole for the electrode post to pass through. At least one contact point is provided in the through hole to contact the electrode post. The data acquisition plate is electrically connected to the electrode post through the contact point.

2. The battery cell according to claim 1, characterized in that, The electrode post includes a positive electrode post and a negative electrode post; the acquisition board includes a first acquisition board and a second acquisition board; the through hole includes a first through hole disposed on the first acquisition board and a second through hole disposed on the second acquisition board; the contact includes a first contact disposed in the first through hole and a second contact disposed in the second through hole. The positive terminal passes through the first through hole and contacts at least one of the first contacts; the negative terminal passes through the second through hole and contacts at least one of the second contacts.

3. The battery cell according to claim 2, characterized in that, The acquisition component also includes a first signal acquisition line, and the first acquisition board and the second acquisition board are electrically connected through the first signal acquisition line.

4. The battery cell according to claim 2, characterized in that, The acquisition component also includes a negative side voltage acquisition line and a positive side voltage acquisition line laid on the surface of the cover plate. The negative side voltage acquisition line is connected to the second acquisition board, and the positive side voltage acquisition line is connected to the first acquisition board.

5. The battery cell according to claim 2, characterized in that, It also includes a filler, which is annular and disposed between the acquisition plate and the electrode post, and the side wall of the filler is provided with a clearance hole to avoid the contact point.

6. The battery cell according to claim 5, characterized in that, A fixing post is horizontally arranged inside the through hole; one end of the fixing post is fixedly connected to the inner wall of the through hole, and the other end extends toward the center of the through hole; the fixing post passes through the clearance hole and abuts against the pole post; the fixing post is hollow; the contact point is located inside the fixing post and at the end where the fixing post abuts against the pole post.

7. The battery cell according to claim 5, characterized in that, The filler is a positive electrode filler and a negative electrode filler. The positive electrode filler is integrally formed with the first acquisition board; the negative electrode filler is integrally formed with the second acquisition board.

8. The battery cell according to claim 1, characterized in that, The acquisition board is equipped with a signal acquisition unit and a signal transmission unit, and the signal acquisition unit and the signal transmission unit are electrically connected to the pole through the contact.

9. A battery pack, characterized in that, Includes the battery cell as described in any one of claims 1 to 8.

10. A car, characterized in that, Includes the battery pack as described in claim 9.

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