Battery and battery pack

Abstract

The utility model relates to a battery, which is used for cell data acquisition and comprises a cell, a shell, a positive terminal, a negative terminal, a top cover, a wireless BMS (battery management system) module and an electric connector, the cell is arranged in the shell, the positive terminal and the negative terminal are electrically connected with the cell, the top cover is connected with the shell, the positive terminal and the negative terminal are connected to the top cover, and the wireless BMS module is electrically connected with the shell. One part of the positive terminal and one part of the negative terminal are located outside the shell, the potential of the top cover is the same as that of the negative terminal, the negative electrode area of the wireless BMS module can be connected with the top cover to achieve signal communication, the electric connecting piece is connected with the positive terminal, cell data can be collected, the integration level of the battery can be improved, and the reliability of the battery is improved. The stability of battery cell data acquisition is improved, and the working efficiency of battery cell data acquisition is further improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery and a battery pack. Background Art

[0002] With the growing development of new energy vehicles and the continuous upgrading of battery technology, batteries currently in circulation are facing retirement as their service life decreases. The operating environment and conditions of power batteries in electric vehicles are extremely complex, requiring them to withstand highly variable temperatures and humidity year-round. Furthermore, depending on road conditions and driving styles, power batteries must constantly adapt to rapidly fluctuating loads. The Battery Management System (BMS) is a crucial component of modern battery technology, playing a particularly crucial role in electric vehicles and renewable energy storage systems. The primary function of a BMS is to ensure safe and stable operation of battery packs, extending their service life and improving energy efficiency. To accurately monitor the operating status of power batteries and implement management strategies, a BMS uses sampling circuits to collect real-time information such as voltage, operating current, and temperature of each battery cell and battery pack. A BMS integrates multiple functional modules and coordinates communication between them, storing key data about the power battery and maintaining communication with the vehicle controller. With the advent of the big data era, BMSs also require real-time interaction with cloud platforms to better manage power batteries and enhance management quality.

[0003] For retired batteries, wireless BMS can be used to quickly diagnose the health status of the battery cells. However, the wireless BMS module needs to be properly fixed during the battery cell information collection process to ensure the stability of the information collection and the aesthetics of the battery cell. Laser welding is a common method used on the market to fix the nickel sheet and the battery cell pole together to achieve information collection. However, after the nickel sheet is welded, the connecting bar and the battery cell pole are welded together. The connecting bar and the battery cell pole are welded on the outer surface of the battery. Due to the welding, the surface of the battery cell pole cannot be guaranteed to be flat, resulting in weld burnout or deformation, which in turn reduces the stability of the battery cell data collection and work efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a battery to improve the stability of battery cell data collection, thereby improving the working efficiency of battery cell data collection.

[0005] The utility model provides a battery, comprising:

[0006] battery cells;

[0007] a shell, in which the battery core is arranged;

[0008] Positive terminal;

[0009] A negative terminal, wherein the positive terminal and the negative terminal are both electrically connected to the battery cell;

[0010] a top cover, the top cover being connected to the housing, the positive terminal and the negative terminal being connected to the top cover, a portion of the positive terminal and a portion of the negative terminal being located outside the housing, and the top cover having the same potential as the negative terminal;

[0011] a wireless BMS module, disposed on the top cover, wherein the negative electrode region of the wireless BMS module is electrically connected to the top cover;

[0012] An electrical connector, one end of which is electrically connected to the positive terminal, and the other end of which is electrically connected to the positive electrode region of the wireless BMS module.

[0013] In one embodiment, the electrical connector includes a fixed block, an elastic member and a movable block, wherein the fixed block, the elastic member and the movable block are all conductors, and the two ends of the elastic member are respectively connected to the fixed block and the movable block, and the fixed block is connected to the positive electrode area. The elastic force of the elastic member is used to keep the movable block in contact with the positive terminal.

[0014] In one embodiment, the battery cell includes a positive tab, the positive tab is provided in the positive terminal, a mounting hole is opened on the peripheral side of the positive terminal, the needle extends from the mounting hole into the positive terminal and is connected to the positive tab in the positive terminal.

[0015] In one embodiment, the battery further includes an insulating member disposed between the wireless BMS module and the battery cell.

[0016] In one embodiment, a groove is formed on the top cover, and the groove passes through opposite sides of the top cover. The wireless BMS module is located in the groove, and the top surface of the wireless BMS module is flush with the top surface of the top cover.

[0017] In one embodiment, a limiting protrusion is provided on the insulating member, and the limiting protrusion is inserted into the wireless BMS module.

[0018] In one embodiment, there are two ejector pins, which are spaced apart from each other and are respectively connected to the positive terminal.

[0019] In one embodiment, the battery further includes a conductive connecting piece, and the negative electrode region of the wireless BMS module is connected to the top cover via the conductive connecting piece.

[0020] In one embodiment, a solder pad is provided in the positive region of the wireless BMS module, and the ejector pin is connected to the wireless BMS module via the solder pad.

[0021] A battery pack includes a battery.

[0022] The battery provided in the present application includes a battery cell, a shell, a positive terminal, a negative terminal, a top cover, a wireless BMS module and an electrical connector. The shell is provided with a battery cell, the positive terminal and the negative terminal are both electrically connected to the battery cell, the top cover is connected to the shell, the positive terminal and the negative terminal are connected to the top cover, a part of the positive terminal and a part of the negative terminal are located outside the shell, the potential of the top cover is the same as that of the negative terminal, the negative electrode area of the wireless BMS module can be connected to the top cover to achieve signal connectivity, the electrical connector is connected to the positive terminal, and the battery cell data can be collected. The wireless BMS module and the battery tab are connected by the electrical connector, which can improve the integration of the battery, improve the stability of the battery cell data collection, and thereby improve the working efficiency of the battery cell data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 is an axonometric view of a battery in one embodiment;

[0025] Figure 2 is a top view of a battery in one embodiment;

[0026] Figure 3 An exploded view of a wireless BMS module for a battery in one embodiment;

[0027] Figure 4 This is an exploded view of the ejector pin of a battery in one embodiment.

[0028] Reference numerals: battery 10; battery cell 20; positive terminal 21; negative terminal 23; housing 30; top cover 40; groove 41; wireless BMS module 51; pad 510; insulating member 52; limiting protrusion 523; ejector pin 60; housing 61; needle 62; spring 63; connecting piece 70 DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many 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.

[0030] 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, and do not indicate or imply 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 a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined, and the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the 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 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] With the increasing global demand for sustainable energy and the rapid development of the electric vehicle market, battery technology, especially lithium-ion batteries, has become a research hotspot. However, in order to ensure the safe use of batteries and maximize their performance, the importance of battery management systems (BMS) has become increasingly prominent. The efficient operation of BMS is crucial to improving battery performance, ensuring user safety, and achieving environmental protection goals. The core functions of BMS include real-time monitoring of battery status (such as voltage, current, temperature, etc.), evaluating battery health, balancing battery cells, controlling battery charging and discharging processes, predicting battery life, and protecting batteries from adverse conditions. BMS is mainly intended to solve the safety and stability problems existing in early battery technology. In particular, with the application of electric vehicles and large-scale energy storage systems, the management requirements for batteries have become more stringent and complex, which has promoted the development of BMS technology. However, during the data collection process of the battery cell 20, the nickel sheet and the electrode are fixed together by laser welding, which is common on the market. When the nickel sheet is welded, the flatness of the electrode cannot be guaranteed when the connecting bar is welded to the battery cell electrode, and weld blasting or deformation may occur. The embodiment of the present application provides a battery 10.

[0034] refer to Figure 1 As shown, a battery 10 provided in an embodiment of the present application, the negative pole of the wireless BMS module 51 can be connected to the battery cell 20 to realize signal connectivity, the electrical connector is connected to the positive pole tab of the battery cell 20, and the data of the battery cell 20 can be collected. The electrical connector can be connected to the positive pole tab of the battery cell 20 and connected to the wireless BMS module 51 at the same time. At the same time, the electrical connector can be connected to the battery tab inside the battery cell 20, which is different from the prior art in which the connecting row and the battery pole are welded on the battery surface. This solution can ensure the flatness of the pole, prevent welding or deformation, and improve the stability of the data collection of the battery cell 20. At the same time, the structure of this solution sets the electrical connector in the battery shell to improve the integration of the battery 10, thereby improving the working efficiency of the data collection of the battery cell 20.

[0035] Combine Figure 1 and Figure 2, shell 30, the battery 10 includes a cell 20, a shell 30, a positive terminal, a negative terminal, a top cover 40, a wireless BMS module 51 and an electrical connector. The cell 20 is arranged inside the shell 30, and the positive terminal and the negative terminal are both electrically connected to the cell 20. The top cover 40 is connected to the shell 30, and the positive terminal and the negative terminal are connected to the top cover 40. A portion of the positive terminal and a portion of the negative terminal are located outside the shell 30. The potential of the top cover 40 is the same as that of the negative terminal. A cell 20 is arranged inside. The cell 20 refers to a single electrochemical cell 20 containing positive and negative electrodes. In some embodiments, the shell 30 adopts a square shell, and an explosion-proof valve is provided at the bottom of the square shell cell 20. An explosion-proof valve is designed on the shell 30, which can be destroyed in time when the pressure is too high, releasing the pressure inside the battery to prevent the battery from exploding in thermal runaway. Specifically, the explosion-proof valve cuts off the current circuit when the pressure inside the battery further increases, and the explosion-proof valve structure is destroyed, releasing the pressure inside the battery to prevent the battery from exploding. The shell 30 is a square shell with an explosion-proof valve at the bottom, which can provide more space for the integration of the wireless BMS module 51. In some embodiments, the shell 30 is made of aluminum. In some embodiments, the positive terminal 21 and the negative terminal 23 of the battery cell 20 protrude from the top cover 40, and the potential of the shell 30 is the same as that of the negative terminal 23. The battery cell pole refers to the positive and negative poles inside the battery cell 20, which are isolated from each other by the electrolyte and the diaphragm, and are connected to the circuit outside the battery through the pole connector. In some embodiments, resistance can be added to the positive terminal 21. Since there is a certain difference between the potential of aluminum and the potential of the positive electrode of the battery, the shell 30 made of aluminum is prone to corrosion problems at the bottom. Directly connecting the shell 30 made of aluminum and the positive terminal 21 can eliminate the potential difference between the two and avoid corrosion of the aluminum shell. There are two pole through-holes on the top cover 40 corresponding to the positive terminal 21 and the negative terminal 23. The positive terminal 21 passes through one pole through-hole and is electrically connected to the top cover 40, and the negative terminal 23 passes through the other pole through-hole and is electrically insulated from the top cover 40. A short-circuit component is provided near the negative terminal 23. When the internal pressure of the power battery increases, the short-circuit component moves upward, so that the positive and negative poles of the power battery form a loop and generate a large current in the loop, causing the connecting component to melt, thereby cutting off the main loop and increasing the resistance of the positive terminal 21. Conductive plastic or silicon carbide is added between the top cover 40 of the shell 30 made of aluminum and the positive terminal 21 of the battery to increase the conduction resistance between the aluminum shell and the positive pole and improve safety.In some embodiments, the wireless BMS module 51 is provided on the top cover 40, and the negative electrode area of the wireless BMS module 51 is electrically connected to the shell 30. The negative electrode of the wireless BMS module 51 can realize signal communication with the battery cell 20. One end of the ejector pin 60 is connected to the positive terminal 21, and the other end is connected to the positive electrode area of the wireless BMS module 51, which can realize the collection of battery cell 20 data, improve the integration of the battery 10, reduce the connection between the positive and negative electrodes of the wireless BMS module 51 and the positive and negative electrodes of the battery cell tabs, thereby improving the integration of the wireless BMS module 51. Different from the common method on the market of fixing the nickel sheet and the pole together by laser welding to realize information collection, the above method can improve the integration of the battery 10 while realizing the collection of battery cell 20 data, improve the stability of battery cell 20 data collection, and thereby improve the working efficiency of battery cell 20 data collection.

[0036] See Figure 3 and Figure 4The electrical connector includes a fixed block, an elastic member and a movable block. The fixed block, the elastic member and the movable block are all conductors. The two ends of the elastic member are respectively connected to the fixed block and the movable block. The fixed block is connected to the positive electrode area. The elastic force of the elastic member is used to keep the movable block in contact with the positive terminal. In some embodiments, the electrical connector is a pin 60. Specifically, the fixed block is a sleeve 61, the elastic member is a spring 63, and the movable block is a needle 62. In some embodiments, the pin 60 includes a sleeve 61, a needle 62 and a spring 63. The spring 63 is arranged in the sleeve 61, one end of the needle 62 is connected to the spring 63, and the other end is connected to the positive terminal 21. The sleeve 61 is fixed to the positive electrode area of the wireless BMS module 51. The pin 60 adopts a double-sided structure, and the spring 63 is arranged in the sleeve 61. When the pin 60 is inserted into the battery cell pole hole, the spring 63 has a pre-compression stroke, which can ensure that the pin 60 and the pole hole are in good contact. The positive electrode area of the wireless BMS module 51 is connected to the positive terminal 21 of the battery cell 20. The pin 60 is used, and a spring 63 structure is arranged inside the pin 60. Assembling the wireless BMS module 51 by pre-compressing the pin 60 can ensure the stability of information collection. In some embodiments, the ejector pin 60 can be a cylindrical ejector pin 60. In some embodiments, the ejector pin 60 can be arranged in two in parallel, with a distance between the two ejector pins 60, and the two ejector pins 60 are respectively connected to the positive terminal 21. Installing two ejector pins 60 can ensure the stability of signal acquisition. In some embodiments, the ejector pin 60 can be arranged in three in parallel. In some embodiments, the side of the ejector pin 60 away from the needle head 62 is copper-plated and is arranged to be a flat structure for easy welding with the pad 510. In some embodiments, the ejector pin 60 is copper-plated, which can improve the conductivity of the ejector pin 60. In some embodiments, the spring 63 provided in the housing 61 of the ejector pin 60 is in a compressed state. The compressed state of the spring 63 can ensure good contact between the ejector pin 60 and the pole hole through the pre-compression stroke generated by the compression of the spring 63 itself, thereby helping to improve the stability of data acquisition of the battery cell 20.

[0037] See Figure 2 and Figure 3The battery cell 20 includes a positive electrode tab, a positive electrode tab is provided in the positive electrode terminal, a mounting hole is provided on the side of the positive electrode terminal, and a needle 62 extends from the mounting hole into the positive electrode terminal and connects with the positive electrode tab in the positive electrode terminal. In some embodiments, a positive electrode tab is provided in the positive electrode terminal 21, a mounting hole is provided on the side of the positive electrode terminal 21, and a needle 62 of the ejector pin 60 extends from the mounting hole into the positive electrode terminal 21 and connects with the positive electrode tab in the positive electrode terminal 21. The connection between the needle 62 and the positive electrode tab can improve the integration of the battery 10. The proximity of the needle 62 to the positive electrode can facilitate data collection and improve the efficiency of data collection. The needle 62 of the ejector pin 60 extends into the positive terminal 21 through a mounting hole formed on the side of the positive terminal 21, and a preload stroke is used to collect signals from the battery cell 20. The positive tab in the positive terminal 21 and the needle 62 of the ejector pin 60 are welded inside the battery 10. This is different from the prior art method of welding the connecting bar to the battery cell pole on the battery surface. This ensures the flatness of the pole and prevents weld blasting or deformation. The preload stroke generated by the compression of the spring 63 increases the stability of the ejector pin 60, prevents poor contact due to looseness, and improves the stability of data collection from the battery cell 20. The mounting hole can more stably fix the position of the ejector pin 60. In some embodiments, the needle 62 of the ejector pin 60 and the mounting hole are detachable.

[0038] See Figure 1 and Figure 3The battery 10 also includes an insulating member 52, which is disposed between the wireless BMS module 51 and the battery cell 20. In some embodiments, the insulating member 52 is disposed between the wireless BMS module 51 and the top cover 40. The wireless BMS module 51 is provided with a positive electrode area and a negative electrode area. The BMS battery management system (BATTERY MANAGEMENT SYSTEM), commonly known as a battery nanny or battery butler, is primarily used to intelligently manage and maintain each battery cell, prevent overcharging and over-discharging of the battery, extend the battery life, and monitor the battery status. The BMS battery management system unit includes a BMS battery management system, a control module, a display module, a wireless communication module, an electrical device, a battery pack for powering the electrical device, and a collection module for collecting battery information from the battery pack. The BMS battery management system is connected to the wireless communication module and the display module via communication interfaces, respectively. The output end of the collection module is connected to the input end of the BMS battery management system, and the output end of the BMS battery management system is connected to the input end of the control module. The control module is connected to the battery pack and the electrical device, respectively. The BMS battery management system is connected to the server via the wireless communication module. The wireless BMS module 51 is one of the core subsystems of the battery energy storage system, responsible for monitoring the operating status of each battery within the battery energy storage unit and ensuring the safe and reliable operation of the energy storage unit. The wireless BMS module 51 can monitor and collect the status parameters of the energy storage battery (including but not limited to single cell voltage, battery terminal temperature, battery loop current, battery pack terminal voltage, battery system insulation resistance, etc.) in real time, and perform necessary analysis and calculations on the relevant status parameters to obtain more system status assessment parameters. It can also achieve effective management and control of the energy storage battery itself according to specific protection and control strategies, ensuring the safe and reliable operation of the entire battery energy storage unit. At the same time, the wireless BMS module 51 can exchange information with other external devices (PCS, EMS, fire protection system, etc.) through its own communication interface and analog / digital input interface, forming a coordinated control of the various subsystems within the entire energy storage power station, ensuring the safe, reliable, and efficient grid-connected operation of the power station. The top cover 40 is provided with a groove 41 that runs through the opposite sides of the top cover 40. The wireless BMS module 51 is located in the groove, and the top surface of the wireless BMS module 51 is flush with the top surface of the top cover 40. The insulating member 52 is located within the groove 41 and is fixed to the housing 30. The insulating member 52 can be made of plastic and can be fixed to the groove 41 of the housing 30 by gluing. The insulating member 52 can provide insulation and prevent short circuits. In some embodiments, the insulating member 52 is provided with a limiting protrusion 523, which is snapped into the wireless BMS module 51.The limiting protrusion 523 plays a fixing role. In some embodiments, the limiting protrusion 523 can be set to four, and the four limiting protrusions 523 are respectively set at the four azimuth angles of the insulating member 52 to achieve the fixation of the wireless BMS module 51 and the insulating member 52 in four directions. In some embodiments, the fixing method can adopt a conical snap-on fixing method. The wireless BMS module 51 is integrated with the top cover 40. The insulating member 52 is used at the bottom of the wireless BMS module 51 to achieve insulation. In addition, the four positioning columns of the insulating member 52 can not only play a positioning role, which can locate the wireless BMS module 51, but also facilitate the disassembly and maintenance of the wireless BMS module 51, thereby improving the stability of the data collection of the battery cell 20 and thereby improving the working efficiency of the data collection of the battery cell 20.

[0039] The negative electrode area of the wireless BMS module 51 is connected to the top cover 40 via a conductive connecting piece 70. The positive electrode of the wireless BMS module 51 is provided with a soldering pad 510, and the ejector pin 60 is connected to the wireless BMS module 51 via the soldering pad 510. The soldering pad 510 is the basic component of the surface mount assembly. In some embodiments, two soldering pads 510 are reserved at the positive electrode position of the wireless BMS module 51, and the ejector pin 60 is soldered to the soldering pad 510 so that the ejector pin 60 is connected to the positive electrode tab of the battery cell to achieve signal collection. In some embodiments, the conductive connecting piece 70 is a nickel sheet, and the positive electrode position of the wireless BMS module 51 is fixed to the nickel sheet by welding. The nickel sheet is set on the side away from the wireless BMS module 51 and away from the ejector pin 60, so that the wireless BMS module 51 and the top cover 40 are directly fixed by laser welding, thereby achieving collection. In some embodiments, since the housing 30 is charged, the voltage of the negative terminal 23 of the battery cell 20 and the housing voltage are at the same potential, which can ensure that the information collection forms a loop. At the same time, the housing 30 is charged, which can improve the integration of the wireless BMS module 51 and reduce the connection between the positive and negative poles of the module and the positive and negative poles of the battery cell tabs. In some embodiments, the negative electrode area of the wireless BMS module 51 is fixed to the pad 510 by soldering through a nickel sheet. Since the housing 30 is charged, the voltage of the negative pole of the battery cell tab is consistent with the voltage of the housing. Therefore, the nickel sheet led out of the negative pole of the module is laser welded to achieve signal acquisition. The positive area of the wireless BMS module 51 is soldered to the spring 63 ejector pin 60. This can improve the integration of the battery 10, improve the stability of the data acquisition of the battery cell 20, and thus improve the working efficiency of the data acquisition of the battery cell 20.

[0040] The battery 10 provided in the embodiment of the present application includes a housing 30, a top cover 40, a wireless BMS module 51 and a thimble 60. The positive terminal 21 and the negative terminal 23 of the battery cell 20 protrude from the top cover 40. The potential of the housing 30 is the same as that of the negative terminal 23. The negative electrode of the wireless BMS module 51 can be connected to the battery cell 20 to achieve signal communication. The thimble 60 is connected to the positive electrode tab of the battery cell 20. The thimble 60 includes a housing 61, a needle 62 and a spring 63. The spring 63 is arranged in the casing 61, one end of the needle 62 is connected to the spring 63, and the other end is connected to the positive terminal 21. The casing 61 is fixed to the positive area of the wireless BMS module 51. The ejector pin 60 adopts a double-sided structure. The spring 63 is arranged in the casing 61. When the ejector pin 60 is inserted into the battery cell pole hole, the spring 63 has a pre-compression stroke, which can ensure that the ejector pin 60 and the pole hole are in good contact. The positive area of the wireless BMS module 51 is connected to the positive terminal 21 of the battery cell 20. A structure using a ejector pin 60 and arranging a spring 63 inside the ejector pin 60, assembling the wireless BMS module 51 by pre-pressing the ejector pin 60 can ensure the stability of information collection, and installing two ejector pins 60 can ensure the stability of signal collection. There are two ejector pins 60, and the two ejector pins 60 are arranged at intervals. The wireless BMS module 51 is integrated with the top cover 40, and the insulating part 52 is used at the bottom of the wireless BMS module 51 to achieve insulation, and the four positioning columns of the insulating part 52 can play a positioning role. In addition, the negative electrode area of the wireless BMS module 51 is fixed to the pad 510 by soldering through a nickel sheet, and the spring 63 ejector pin 60 is welded to the positive electrode area of the wireless BMS module 51 by soldering. The data of the battery cell 20 can be collected through the wireless BMS module 51, the ejector pin 60, the shell 30 and other structures, which can improve the integration of the battery 10, improve the stability of the data collection of the battery cell 20, and thereby improve the working efficiency of the data collection of the battery cell 20. An embodiment of the present application provides a battery pack, which includes a battery 10. The battery pack includes a box, and the battery 10 is arranged in the box. The battery pack has a stable data acquisition effect.

[0041] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0042] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model 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 concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A battery for collecting cell data, characterized in that: include: battery cells; a shell, in which the battery core is arranged; Positive terminal; A negative terminal, wherein both the positive terminal and the negative terminal are electrically connected to the battery cell; a top cover, the top cover being connected to the housing, the positive terminal and the negative terminal being connected to the top cover, a portion of the positive terminal and a portion of the negative terminal being located outside the housing, and the top cover having the same potential as the negative terminal; a wireless BMS module, disposed on the top cover, wherein the negative electrode region of the wireless BMS module is electrically connected to the top cover; An electrical connector, one end of which is electrically connected to the positive terminal, and the other end of which is electrically connected to the positive electrode region of the wireless BMS module.

2. The battery according to claim 1, characterized in that The electrical connector includes a fixed block, an elastic member and a movable block. The fixed block, the elastic member and the movable block are all conductors. The two ends of the elastic member are respectively connected to the fixed block and the movable block. The fixed block is connected to the positive electrode area. The elastic force of the elastic member is used to keep the movable block in contact with the positive terminal.

3. The battery according to claim 2, characterized in that The battery cell includes a positive tab, which is provided in the positive terminal. A mounting hole is provided on the circumference of the positive terminal. The movable block extends from the mounting hole into the positive terminal and is connected to the positive tab in the positive terminal.

4. The battery according to claim 1, characterized in that The battery further includes an insulating member disposed between the wireless BMS module and the battery cell.

5. The battery according to claim 4, characterized in that The top cover is provided with a groove, the groove running through two opposite sides of the top cover, the wireless BMS module is located in the groove and the top surface of the BMS module is flush with the top surface of the top cover.

6. The battery according to claim 4, characterized in that A limiting protrusion is provided on the insulating member, and the limiting protrusion is inserted into the wireless BMS module.

7. The battery according to claim 2, characterized in that There are two electrical connectors, which are spaced apart and connected to the positive terminals respectively.

8. The battery according to claim 1, characterized in that The battery further includes a conductive connecting piece, and the negative electrode area of the wireless BMS module is connected to the top cover via the conductive connecting piece.

9. The battery according to claim 1, characterized in that The positive electrode area of the wireless BMS module is provided with a welding pad, and the electrical connector is connected to the wireless BMS module via the welding pad.

10. A battery pack, characterized in that: The battery pack comprises the battery according to any one of claims 1 to 9.

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