Battery and battery pack

Abstract

The utility model relates to a battery and a battery pack, which are used for cell data acquisition, the battery comprises a cell, a shell, a positive pole, a negative pole, a top cover, a BMS (battery management system) module and an electric connecting piece, the positive pole and the negative pole are both electrically connected with the cell, the top cover is connected with the shell, the positive pole and the negative pole are arranged on the top cover, and the BMS module is arranged on the shell. The BMS module is connected with the top cover to realize signal communication, one end of the first electric connecting piece is electrically connected with the positive pole, the other end of the first electric connecting piece is electrically connected with a positive region of the BMS module, one end of the second electric connecting piece is electrically connected with the negative pole, and the other end of the second electric connecting piece is electrically connected with a negative region of the BMS module. The top surface of the first electric connecting piece is not higher than the top surface of the positive pole, and the top surface of the second electric connecting piece is not higher than the top surface of the negative pole, so that cell data acquisition can be realized, and the stability of cell data acquisition is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a battery and battery package. BACKGROUND

[0002] With the development of new energy vehicles, battery technology is constantly upgraded and iterated, and the batteries circulating in the market will also face retirement as their service life decreases. The working environment and conditions of power batteries in electric vehicles are very complex, and they need to face variable temperature and humidity environments all year round. In addition, due to different road conditions and driving methods, power batteries also need to adapt to the sudden changes in load at all times. Battery management system (BMS) is an important part of modern battery technology, and plays a key role in electric vehicles and renewable energy storage systems. The main function of BMS is to ensure that the battery pack operates in a safe and stable condition, prolongs its service life, and improves energy utilization efficiency. In order to accurately obtain the working condition of the power battery and implement the management strategy, BMS needs to collect the voltage, working current, temperature and other information of each battery monomer and battery pack in real time through the sampling circuit. BMS needs to integrate multiple functional modules and reasonably coordinate the communication operation between the modules, store some key data of the power battery, and maintain communication with the vehicle controller and the like. With the advent of the big data era, BMS also needs to interact with the cloud platform in real time in order to better handle the management of power batteries and improve management quality.

[0003] For the retired battery, the wireless BMS mode is adopted, which can quickly diagnose the health status of the battery cell. In the process of collecting information of the BMS module, a good fixing method is needed to ensure the stability of information collection and the appearance of the battery cell. The common laser welding method is used to fix the nickel sheet and the pole together to realize information collection. When the nickel sheet and the pole are welded, the connection row and the pole of the battery cell are usually welded on the outer surface of the battery, which may cause the surface of the pole to be uneven due to welding, and may cause welding explosion or deformation, thereby reducing the stability of the data collection of the battery cell. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a battery to improve the stability of battery cell data collection.

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

[0006] Battery cell;

[0007] Shell, inside is equipped with the battery cell;

[0008] Positive pole;

[0009] A positive pole, and a negative pole, both of which are electrically connected with the battery cell;

[0010] A top cover, which is connected with the shell, and the positive pole and the negative pole are arranged on the top cover;

[0011] A BMS module, which is arranged on the side of the top cover away from the battery cell, and has a positive area and a negative area;

[0012] An electric connector, which comprises a first electric connector and a second electric connector arranged on the surface of the top cover away from the battery cell, one end of the first electric connector is electrically connected with the positive pole, and the other end of the first electric connector is electrically connected with the positive area of the BMS module; one end of the second electric connector is electrically connected with the negative pole, and the other end of the second electric connector is electrically connected with the negative area of the BMS module; the surface of the first electric connector away from the top cover is not higher than the surface of the positive pole away from the top cover, and the surface of the second electric connector away from the top cover is not higher than the surface of the negative pole away from the top cover.

[0013] In one embodiment, the electric connector comprises a connecting block and a connecting band, both of which are conductors, the connecting block of the first electric connector is a first connecting block, the connecting band of the first electric connector is a first connecting band, and both ends of the first connecting band are connected with the first connecting block and the positive area respectively; the connecting block of the second electric connector is a second connecting block, the connecting band of the second electric connector is a second connecting band, and both ends of the second connecting band are connected with the second connecting block and the negative area respectively;

[0014] The top surface of the positive pole is provided with a first installation slot, the first connecting block is clamped in the first installation slot, one end of the first connecting band is connected with the first connecting block, and the other end of the first connecting band is connected with the positive area;

[0015] The top surface of the negative pole is provided with a second installation slot, the second connecting block is clamped in the second installation slot, one end of the second connecting band is connected with the second connecting block, and the other end of the second connecting band is connected with the negative area.

[0016] In one embodiment, the top surface of the first connecting block is flush with the top surface of the positive pole, and the top surface of the second connecting block is flush with the top surface of the negative pole.

[0017] In one embodiment, the bottom surface of the first connecting block is provided with a plurality of spaced first buckles in the circumferential direction, the first mounting slot is provided with a plurality of spaced positive buckles in the circumferential direction, the positive buckles form first clamping gaps with the bottom of the first mounting slot, and the first buckles are clamped in the first clamping gaps.

[0018] And / or, the bottom surface of the second connecting block is provided with a plurality of spaced second buckles in the circumferential direction, the second mounting slot is provided with a plurality of spaced negative buckles in the circumferential direction, the negative buckles form second clamping gaps with the bottom of the second mounting slot, and the second buckles are clamped in the second clamping gaps.

[0019] In one embodiment, the surface of the positive pole is provided with a first groove, the first groove extends from the edge of the positive pole to the first mounting slot, and the first connecting band is partially arranged in the first groove.

[0020] And / or, the surface of the negative pole is provided with a second groove, the second groove extends from the edge of the negative pole to the second mounting slot, and the second connecting band is partially arranged in the second groove.

[0021] In one embodiment, the battery further comprises an insulating member arranged between the BMS module and the battery cell.

[0022] In one embodiment, the top cover is provided with a through hole, the BMS module is located in the through hole, and the top surface of the BMS module is flush with the top surface of the top cover.

[0023] In one embodiment, an insulating layer is arranged between the electrical connecting member and the top cover.

[0024] In one embodiment, the electrical connecting member is a flexible circuit board.

[0025] In one embodiment, the battery further comprises an explosion-proof valve, the top cover is connected to the top of the shell, and the explosion-proof valve is arranged at the bottom of the shell.

[0026] A battery pack comprising the battery of any one of the above.

[0027] The battery provided in this application is used for cell data acquisition. The battery includes a cell, a casing, a positive terminal, a negative terminal, a top cover, a BMS module, and electrical connectors. The cell is housed inside the casing, and both the positive and negative terminals are electrically connected to the cell. The top cover is connected to the casing, and the positive and negative terminals are mounted on the top cover. A portion of the positive terminal and a portion of the negative terminal are located outside the casing. The BMS module is connected to the top cover to achieve signal communication. One end of the first electrical connector is electrically connected to the positive terminal, and the other end of the first electrical connector is electrically connected to the positive terminal of the BMS module. One end of the second electrical connector is electrically connected to the negative terminal. The first electrical connector is electrically connected to the positive terminal, and the other end of the second electrical connector is electrically connected to the negative terminal of the BMS module, enabling the acquisition of cell data. The top surface of the first electrical connector is not higher than the top surface of the positive terminal, and the top surface of the second electrical connector is not higher than the top surface of the negative terminal. Since the top surface of the first electrical connector is lower than or equal to the top surface of the positive terminal, it can ensure that the surfaces of the positive and negative terminals are in a flat state, which can prevent soldering failure or deformation caused by uneven electrode terminal surfaces, thus improving the stability of cell data acquisition. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a schematic diagram of a battery in one embodiment;

[0030] Figure 2 An exploded view of a battery in one embodiment;

[0031] Figure 3 This is a schematic diagram of the electrical connection of the battery in one embodiment;

[0032] Figure 4 A top view of the battery in another embodiment;

[0033] Figure 5 This is an exploded view of the battery in another embodiment.

[0034] Reference numerals: Battery 10; Cell 20; Positive terminal 21; Negative terminal 23; Groove 24; Housing 30; Top cover 40; Through hole 41; BMS module 50; Electrical connector 60; Connecting strap 601; Connecting block 602; First buckle 6021; Positive buckle 6022; Negative buckle 6023; First electrical connector 61; Second electrical connector 62; Insulator 70 Detailed Implementation

[0035] In order to make the above objects, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners, which are different from those described herein, and it is understood that similar improvements can be made by those skilled in the art without departing from the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited, and the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] With the increasing global demand for sustainable energy and the rapid development of the electric vehicle market, battery 10 technology, especially lithium-ion batteries 10, has become a hot research topic. However, to ensure the safe use and maximize the performance of the battery 10, the importance of the battery management system (BMS) is increasingly highlighted. The efficient operation of the BMS is crucial for improving battery 10 performance, ensuring user safety, and achieving environmental protection goals. The core functions of the BMS include real-time monitoring of battery 10 status (such as voltage, current, temperature, etc.), assessing battery 10 health, balancing battery 10 cells, controlling battery 10 charging and discharging processes, predicting battery 10 life, and protecting battery 10 from adverse conditions. The BMS is mainly used to solve the safety and stability problems in early battery 10 technology, especially with the application of electric vehicles and large-scale energy storage systems, the management requirements for batteries 10 are more stringent and complex, which promotes the development of BMS technology. However, in the process of collecting data from the battery cell 20, the nickel sheet is commonly fixed to the pole by laser welding on the market. When the nickel sheet is welded, the connection row cannot guarantee the flatness of the pole when it is welded to the pole of the battery cell 20, and the welding or deformation may occur. The embodiments of the present application provide a battery 10 that can collect data from the battery cell 20, facilitate disassembly and maintenance, and improve the stability of data collection from the battery cell 20.

[0040] Referring to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 , the BMS module 50 of the battery 10 provided by the embodiments of the present application can be connected to the battery cell 20 to realize signal communication. The positive pole 21 and the negative pole 23 are electrically connected to the battery cell 20. The top cover 40 is connected to the shell 30. The positive pole 21 and the negative pole 23 are arranged on the top cover 40 and are spaced apart. The BMS module 50 is also connected to the side of the top cover 40 away from the shell 30 and is located between the positive pole 21 and the negative pole 23. Part of the positive pole 21 and part of the negative pole 23 are located outside the shell 30. The top cover 40 is insulated and not electrified. The electrical connector 60 includes a first electrical connector 61 and a second electrical connector 62. One end of the first electrical connector 61 is electrically connected to the positive pole 21. The other end of the first electrical connector 61 is electrically connected to the positive electrode area of the BMS module 50. One end of the second electrical connector 62 is electrically connected to the negative pole 23. The other end of the second electrical connector 62 is electrically connected to the negative electrode area of the BMS module 50. The electrical connector 60 can collect data from the battery cell 20. After the electrical connector 60 is connected to the positive pole 21 and the negative pole 23, it is also connected to the positive pole lug arranged at the bottom of the positive pole 21 and the negative pole lug arranged at the bottom of the negative pole 23, respectively. The BMS module 50 is also connected, so that the BMS module 50 can collect the current transmission signals on the positive pole lug and the negative pole lug.

[0041] The electric connection piece 60 comprises a connection strip 601 and a connection block 602, both of which are conductors. The connection block 602 of the first electric connection piece 61 is a first connection block, and the connection strip 601 of the first electric connection piece 61 is a first connection strip. The two ends of the first connection strip are connected to the first connection block and the positive pole area on the BMS module 50, respectively. The connection block 602 of the second electric connection piece 62 is a second connection block, and the connection strip 601 of the second electric connection piece 62 is a second connection strip. The two ends of the second connection strip are connected to the second connection block and the negative pole area on the BMS module 50, respectively.

[0042] In some embodiments, the top surface of the positive pole post 21 is provided with a first installation slot, and the connection block 602 of the first electric connection piece 61 is clamped in the first installation slot of the positive pole post 21. The top surface of the negative pole post 23 is provided with a second installation slot, and the connection block 602 of the second electric connection piece 62 is clamped in the second installation slot of the negative pole post 23. The other end of the connection block 602 of the first electric connection piece 61 is connected to the positive pole area, and the other end of the connection block 602 of the second electric connection piece 62 is connected to the negative pole area. The upper surface of the connection block 602 of the first electric connection piece 61 is flush with the upper surface of the positive pole post 21, and the upper surface of the connection block 602 of the second electric connection piece 62 is flush with the upper surface of the negative pole post 23. The connection block 602 of the first electric connection piece 61 is a first connection block, and the connection strip 601 of the first electric connection piece 61 is a first connection strip. The connection block 602 of the second electric connection piece 62 is a second connection block, and the connection strip 601 of the second electric connection piece 62 is a second connection strip. The first connection block is clamped with the positive pole post 21. One end of the first connection strip is connected to the first connection block, and the other end of the first connection strip is connected to the positive pole area. The second connection block is clamped with the negative pole post 23. One end of the second connection strip is connected to the second connection block, and the other end of the second connection strip is connected to the negative pole area. The electric connection piece can be connected to the tab of the battery 10 inside the positive pole post 21 and the negative pole post 23. The surface of the positive pole post 21 and the negative pole post 23 is flat. The surface of the first electric connection piece 61 away from the top cover is not higher than the surface of the positive pole post 21 away from the top cover, and the surface of the second electric connection piece 62 away from the top cover is not higher than the surface of the negative pole post 23 away from the top cover. The top surface of the first electric connection piece 61 is not higher than the top surface of the positive pole post 21, and the top surface of the second electric connection piece 62 is not higher than the top surface of the negative pole post 23. Unlike the prior art, the connection of the connection strip and the pole of the battery 10 is welded on the surface of the battery 10. The present scheme can ensure the flatness of the pole, prevent the situation of explosive welding or deformation, improve the flatness of the pole, and improve the stability of the data collection of the battery 10.

[0043] In further embodiments, the surface of the positive pole post 21 is provided with a first groove, and the first groove extends from the edge of the positive pole post 21 to the first installation slot. The first connection strip is partially arranged in the first groove.

[0044] And / or, the surface of the negative electrode terminal 23 is provided with a second groove extending from the edge of the negative electrode terminal 23 to the second mounting groove, and the second connection band portion is disposed in the second groove.

[0045] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5The battery 10 comprises a cell 20, a shell 30, a positive pole 21, a negative pole 23, a top cover 40, a BMS module 50 and an electrical connector 60. The cell 20 is arranged inside the shell 30. The positive pole 21 and the negative pole 23 are electrically connected to the cell 20. The top cover 40 is connected to the shell 30. The positive pole 21 and the negative pole 23 are connected to the top cover 40. Part of the positive pole 21 and part of the negative pole 23 are located outside the shell 30. The top cover 40 is not electrified. The cell 20 is arranged inside the top cover 40. The cell 20 refers to a single electrochemical cell 20 containing a positive pole and a negative pole. In some embodiments, the shell 30 is a square shell 30. An explosion-proof valve is arranged at the bottom of the square shell 30. An explosion-proof valve is designed on the shell 30. When the pressure is too high, the explosion-proof valve can be damaged in time to release the pressure inside the battery 10 and prevent the battery 10 from exploding in thermal runaway. Specifically, the explosion-proof valve cuts off the current loop. When the pressure inside the battery 10 further increases, the explosion-proof valve structure is damaged to release the pressure inside the battery 10 and prevent the battery 10 from exploding. The square shell 30 with the explosion-proof valve at the bottom can provide more space for the integration of the BMS module 50. In some embodiments, the shell 30 is made of aluminum.In some embodiments, the positive electrode pole 21 and the negative electrode pole 23 of the battery cell 20 protrude from the top cover 40, the shell 30 is not electrified, the top cover 40 has two pole through holes corresponding to the positions of the positive electrode pole 21 and the negative electrode pole 23, the positive electrode pole 21 passes through one of the pole through holes and is in electrical conduction with the top cover 40, and the negative electrode pole 23 passes through the other pole through hole and is in electrical insulation with the top cover 40. In some embodiments, the BMS module 50 is arranged on the top cover 40, the BMS module 50 is electrically connected with the shell 30, and the BMS module 50 can realize signal communication with the battery cell 20. In some embodiments, the BMS module 50 can be fixed on the top cover 40 by gluing. In some embodiments, the connecting block 602 of the first electrical connector 61 is clamped with the positive electrode pole 21, the connecting block 602 of the second electrical connector 62 is clamped with the negative electrode pole 23, the other end of the connecting block 602 of the first electrical connector 61 is connected with the positive electrode area, and the other end of the connecting block 602 of the second electrical connector 62 is connected with the negative electrode area. The first electrical connector 61 can simultaneously connect the BMS module 50 and the positive electrode pole 21. In some embodiments, the second electrical connector 62 can simultaneously connect the BMS module 50 and the negative electrode pole 23. Specifically, the electrical connector 60 includes the first electrical connector 61 and the second electrical connector 62. One end of the first electrical connector 61 is electrically connected with the positive electrode pole 21, the other end of the first electrical connector 61 is electrically connected with the positive electrode area of the BMS module 50, one end of the second electrical connector 62 is electrically connected with the negative electrode pole 23, and the other end of the second electrical connector 62 is electrically connected with the negative electrode area of the BMS module 50. The above-mentioned mode can realize data collection of the battery cell 20, which is different from the common mode in the market that the nickel sheet is fixed together with the pole by laser welding to realize information collection. The above-mentioned mode can realize data collection of the battery cell 20, and the positive electrode pole 21 and the negative electrode pole 23 are connected with the BMS module 50 through the electrical connector 60, which is convenient for disassembly and maintenance and improves the stability of data collection of the battery cell 20.

[0046] In some embodiments, the connecting belt 601 can be a collection line, and the two ends of the collection line are connected with the tab and the shell 30 respectively, which can realize data collection of the battery 10. In some embodiments, the collection line is connected with the positive electrode area and the negative electrode area of the BMS module 50, and the connection between the collection line and the BMS module 50 adopts a soldering tin mode, which is convenient for disassembly and maintenance. In some embodiments, the positive electrode area and the negative electrode area of the BMS module 50 are two pads of the BMS module 50, so that the positive electrode area and the negative electrode area of the BMS module 50 are respectively connected with the positive electrode tab and the negative electrode tab of the battery cell 20, thereby realizing information data collection of the battery cell 20. In some embodiments, the connecting sheet is arranged on the connecting line where the positive electrode area and the negative electrode area of the BMS module 50 are located.

[0047] Referring to Figure 1 , Figure 2 and Figure 3The electrical connecting piece 60 comprises a connecting block 602 and a connecting band 601, both of which are conductors. The two ends of the connecting band 601 are connected with the connecting block 602 and the shell 30 respectively. The connecting block 602 is connected with the positive electrode area and the negative electrode area respectively. In some embodiments, the connecting block 602 is arranged on the positive electrode pole 21 and the negative electrode pole 23. The top surface of the first connecting block is flush with the top surface of the positive electrode pole 21. The upper top surface of the second connecting block is flush with the top surface of the negative electrode pole 23. Specifically, the top surface of the first connecting block and the upper top surface of the second connecting block are both flat surfaces. The top surface of the positive electrode pole 21 and the top surface of the negative electrode pole 23 are both flat surfaces. The flat surface on which the top surface of the first connecting block is located coincides with the flat surface on which the top surface of the positive electrode pole 21 is located. The flat surface on which the upper top surface of the second connecting block is located coincides with the flat surface on which the top surface of the negative electrode pole 23 is located. The first connecting block comprises a first buckle 6021. The positive electrode pole 21 comprises a positive electrode buckle 6022. The first connecting block can rotate relative to the positive electrode pole 21 to switch between a first state and a second state. When the first connecting block is in the first state, the first buckle 6021 and the positive electrode buckle 6022 are staggered with each other. When the first connecting block is in the second state, the first buckle 6021 and the positive electrode buckle 6022 are buckled. In addition, the second connecting block comprises a second buckle. The negative electrode pole 23 comprises a negative electrode buckle 6023. The second connecting block can rotate relative to the negative electrode pole 23 to switch between a third state and a fourth state. When the second connecting block is in the third state, the second buckle and the negative electrode buckle 6023 are staggered with each other. When the second connecting block is in the fourth state, the second buckle and the negative electrode buckle 6023 are buckled. In some embodiments, the connecting block 602 and the positive electrode pole 21 are detachable structures, which are convenient for disassembly and maintenance. In some embodiments, the upper surface of the connecting block 602 is flush with the upper surfaces of the positive electrode pole 21 and the negative electrode pole 23, so that the upper surfaces of the positive electrode pole 21 and the negative electrode pole 23 are flat, which is conducive to keeping the positive electrode tab and the negative electrode tab flat, avoiding the situation of explosion welding or deformation caused by the uneven surface of the battery pole, improving the flatness of the pole, and improving the stability of the data collection of the battery cell 20.

[0048] The bottom of the positive pole 21 is connected with a positive tab, and the bottom of the negative pole 23 is connected with a negative tab. The positive tab and the negative tab are connected with the battery cell 20. The surface of the positive pole 21 is provided with a groove 24, i.e. a first groove. The first groove extends from the edge of the positive pole 21 to a first installation groove. The first connecting band can be partially placed in the first groove to make the top surface of the positive pole 21 flat. The connecting block 602 is connected with the positive tab in the positive pole 21. The negative pole 23 is provided with a negative tab. The surface of the negative pole is provided with a groove 24, i.e. a second groove. The second groove extends from the edge of the negative pole 23 to a second installation groove. The second connecting band 601 can be placed in the second groove to make the top surface of the negative pole flat. The top surface of the positive pole 21 and the negative pole 23 and the upper surface of the connecting block 602 arranged therein are in a flat state, which is beneficial to keep the positive tab and the negative tab flat. The uneven surface of the battery pole 10 can be avoided to cause the explosion welding or deformation. The flatness of the pole can be improved, and the stability of the data collection of the battery cell 20 can be improved.

[0049] In some embodiments, the first groove and the second groove are respectively riveted with an electric connecting piece, such as a copper piece, at the bottom area. The electric connecting piece connects the positive pole 21 and the negative pole 23. The first connecting band and the second connecting band are respectively soldered on the electric connecting piece at the bottom of the first groove and the second groove. The positive tab and the negative tab are also respectively connected with the electric connecting piece at the bottom of the first groove and the second groove.

[0050] Referring to Figure 1 and Figure 3The bottom of the connecting block 602 is provided with a rotating buckle capable of being rotatably connected to the positive pole post 21 and the negative pole post 23. The rotating buckle can be provided in three, and the three rotating buckles are respectively connected to the positive pole post 21 and the negative pole post 23 in a built-in three-position spiral port mode, and the inside of the tab of the battery cell 20 is also a three-position spiral port mode. When assembling, the spiral port is aligned with the tab in the clockwise direction or the counterclockwise direction to lock the connecting block 602, and there is a notch groove in the front of the tab. When the spiral port is rotated to the notch groove, it can play a positioning role, ensuring the consistency and reliability of the installation of the parts. For example, in some embodiments, the bottom surface of the first connecting block is provided with a plurality of spaced first buckles 6021, i.e. rotating buckles, along the circumference, and the first installation slot is provided with a plurality of spaced positive buckles along the circumference. The positive buckles form a first clamping gap with the bottom of the first installation slot. The first buckle 6021 can pass between adjacent positive buckles and rotate synchronously with the first connecting block to be clamped in the first clamping gap. Similarly, the bottom surface of the second connecting block is provided with a plurality of spaced second buckles along the circumference, and the second installation slot is provided with a plurality of spaced negative buckles along the circumference. The negative buckles form a second clamping gap with the bottom of the second installation slot. The second buckle can pass between adjacent negative buckles and rotate synchronously with the second connecting block to be clamped in the second clamping gap.

[0051] The battery 10 further comprises an insulating piece 70 arranged between the BMS module 50 and the battery cell 20, and in some embodiments, arranged between the BMS module 50 and the top cover 40, and the BMS module 50 is provided with a positive electrode area and a negative electrode area. The BMS battery management system (BATTERY MANAGEMENT SYSTEM) is commonly known as the battery 10 nanny or the battery 10 housekeeper, which is mainly used for intelligent management and maintenance of each battery 10 unit, prevention of overcharging and overdischarging of the battery 10, prolongation of the service life of the battery 10, and monitoring of the state of the battery 10. The BMS battery management system unit comprises a BMS battery management system, a control module, a display module, a wireless communication module, an electrical device, a battery pack for supplying power to the electrical device, and an acquisition module for acquiring battery information of the battery pack, the BMS battery management system is connected with the wireless communication module and the display module through a communication interface, an output end of the acquisition module is connected with an input end of the BMS battery management system, an output end of the BMS battery management system is connected with an input end of the control module, the control module is connected with the battery pack and the electrical device, and the BMS battery management system is connected with a server end through the wireless communication module. The BMS module 50 is one of the core subsystems of the battery energy storage system, which is responsible for monitoring the running state of each battery 10 in the battery energy storage unit and ensuring the safe and reliable operation of the energy storage unit. The BMS module 50 can monitor and acquire the state parameters of the energy storage battery 10 in real time (including but not limited to single battery 10 voltage, battery 10 pole temperature, battery 10 loop current, battery pack terminal voltage, battery 10 system insulation resistance, etc.), analyze and calculate the related state parameters as necessary, obtain more system state evaluation parameters, and realize effective management and control of the energy storage battery 10 body according to a specific protection control strategy, to ensure the safe and reliable operation of the entire battery 10 energy storage unit. At the same time, the BMS module 50 can interact with external other devices (PCS, EMS, fire extinguishing system, etc.) through its own communication interface, analog / digital input interface, to form a linkage control of each subsystem in the entire energy storage power station, to ensure the safe, reliable and efficient grid-connected operation of the power station. The top cover 40 is provided with a through hole 41 penetrating through opposite sides of the top cover 40, and the BMS module 50 is located in the through hole 41 and the top surface of the BMS module 50 is flush with the top surface of the top cover 40. Specifically, the top surface of the BMS module 50 is a plane, the top surface of the top cover 40 is a plane, and the plane where the top surface of the BMS module 50 is located coincides with the plane where the top surface of the top cover 40 is located. The flush of the top surface of the BMS module 50 with the top surface of the top cover 40 can seal the BMS module 50 in the through hole 41, and the arrangement of the top cover 40 can waterproof and dustproof the BMS module 50, which is conducive to the maintenance of the BMS module 50 and prolongs the service life of the BMS module 50. The insulating piece 70 is located at the bottom of the through hole 41 and fixed with the shell 30.The insulating piece 70 can be made of plastic material, and the insulating piece 70 can be fixed on the shell 30 by gluing, so as to realize insulation between the BMS module 50 and the shell 30 and prevent short circuit. In some embodiments, the insulating piece 70 is provided with limiting protrusions, which are clamped into the BMS module 50. The limiting protrusions can play a role of fixation, and in some embodiments, the limiting protrusions can be four, which are arranged at four azimuth angles of the insulating piece 70, so as to realize fixation of the BMS module 50 and the insulating piece 70 in four directions. In some embodiments, the fixation mode can be a conical buckle fixation mode. The BMS module 50 is integrated with the top cover 40, and the BMS module 50 at the bottom is provided with the insulating piece 70, so as to realize insulation, and the four positioning columns of the insulating piece 70 can play a role of positioning and facilitate disassembly and maintenance of the BMS module 50, thereby improving stability of data acquisition of the battery cell 20 and work efficiency of data acquisition of the battery cell 20. The BMS module 50 is arranged on the top cover 40, and the BMS module 50 is electrically connected with the top cover 40. In some embodiments, the positive electrode of the BMS module 50 is provided with a solder pad, the connecting belt 601 can be connected with the BMS module 50 through the solder pad, the solder pad is a basic component unit of surface mount assembly, and the connecting belt 601 is welded on the solder pad through soldering, so as to connect the first electric connecting piece 61 and the positive electrode tab of the battery cell 20, and realize signal acquisition. At the same time, the shell 30 is not electrified, and the arrangement of the electric connecting piece 60 can reduce the connecting line between the positive and negative electrodes of the module and the positive and negative electrodes of the battery cell 20, improve the integration degree of the battery 10, improve the stability of data acquisition of the battery cell 20, and further improve the work efficiency of data acquisition of the battery cell 20. The battery pack provided by the embodiment of the application has the effect of stable data acquisition.

[0052] The above embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A battery, characterized by, The battery includes: an electric core; a shell, which internally has the electric core; a positive pole; a negative pole, the positive pole and the negative pole are both electrically connected with the electric core; a top cover, which is connected with the shell, the positive pole and the negative pole are arranged on the top cover; a BMS module, which is arranged on the side of the top cover away from the electric core, the BMS module has a positive area and a negative area; an electric connector, which includes a first electric connector and a second electric connector arranged on the surface of the top cover away from the electric core, one end of the first electric connector is electrically connected with the positive pole, the other end of the first electric connector is electrically connected with the positive area of the BMS module; one end of the second electric connector is electrically connected with the negative pole, the other end of the second electric connector is electrically connected with the negative area of the BMS module; the surface of the first electric connector away from the top cover is not higher than the surface of the positive pole away from the top cover, and the surface of the second electric connector away from the top cover is not higher than the surface of the negative pole away from the top cover.

2. The battery of claim 1, wherein, The electric connector includes a connecting block and a connecting band, the connecting block and the connecting band are both conductors, the connecting block of the first electric connector is a first connecting block, the connecting band of the first electric connector is a first connecting band, and the two ends of the first connecting band are respectively connected with the first connecting block and the positive area; the connecting block of the second electric connector is a second connecting block, the connecting band of the second electric connector is a second connecting band, and the two ends of the second connecting band are respectively connected with the second connecting block and the negative area; a first installation slot is arranged on the top surface of the positive pole, the first connecting block is clamped in the first installation slot, one end of the first connecting band is connected with the first connecting block, and the other end of the first connecting band is connected with the positive area; a second installation slot is arranged on the top surface of the negative pole, the second connecting block is clamped in the second installation slot, one end of the second connecting band is connected with the second connecting block, and the other end of the second connecting band is connected with the negative area.

3. The battery of claim 2, wherein, The top surface of the first connecting block is flush with the top surface of the positive pole, and the top surface of the second connecting block is flush with the top surface of the negative pole.

4. The battery of claim 2, wherein, A plurality of spaced first buckles are arranged on the bottom surface of the first connecting block along the circumference, a plurality of spaced positive buckles are arranged in the first installation slot along the circumference, the positive buckles and the bottom of the first installation slot form a first clamping gap, and the first buckles are clamped in the first clamping gap; and / or, a plurality of spaced second buckles are arranged on the bottom surface of the second connecting block along the circumference, a plurality of spaced negative buckles are arranged in the second installation slot along the circumference, the negative buckles and the bottom of the second installation slot form a second clamping gap, and the second buckles are clamped in the second clamping gap.

5. The battery of claim 2, wherein, A first groove is arranged on the surface of the positive pole, the first groove extends from the edge of the positive pole to the first installation slot, and the first connecting band is partially arranged in the first groove; And / or, a surface of the negative pole post is provided with a second groove extending from an edge of the negative pole post to the second mounting groove, and the second connecting band portion is disposed in the second groove.

6. The battery of claim 1, wherein, The battery further comprises an insulating member disposed between the BMS module and the battery cell.

7. The battery of claim 6, wherein, The top cover is provided with a through hole, and the BMS module is located in the through hole and the top surface of the BMS module is flush with the top surface of the top cover.

8. The battery of claim 6, wherein, An insulating layer is disposed between the electrical connecting member and the top cover.

9. The battery of claim 1, wherein, The electrical connecting member is a flexible circuit board.

10. The battery according to any one of claims 1 to 9, characterized in that, The battery further comprises an explosion-proof valve, the top cover is connected to the top of the shell, and the explosion-proof valve is disposed at the bottom of the shell.

11. A battery pack, characterized by The battery pack comprises the battery of any one of claims 1-9.

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