Battery and unmanned aerial vehicle

Abstract

The invention discloses a battery and an unmanned aerial vehicle. The battery comprises a battery cell module; the battery management device is mounted at the side part of the battery cell module, the battery management device comprises a device protection shell and a battery management mainboard mounted in the device protection shell, and the battery management mainboard is electrically connected with the battery cell module; and the battery head shell is mounted on the battery cell module and covers the battery management device so as to provide protection for the battery management device. In addition, the device protection shell only needs to be arranged according to the size of the battery management mainboard, and compared with the whole battery head shell, the device protection shell is smaller in size and lighter in weight. Besides, a battery head shell is arranged to cover the battery management device, and the battery head shell can adopt a light plastic structure, so that the structure of the scheme can realize the beneficial effect of reducing the weight of the battery on the whole. According to the scheme, a dual-protection structure is provided, when the battery management main board is impacted by external force, the internal battery management main board can be effectively prevented from being impacted, and the maintenance cost after the impact is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to a battery and a drone. Background Art

[0002] Many mobile power-consuming devices are equipped with mobile batteries for power supply, such as drones, agricultural machinery, electric vehicles, etc. In order to realize intelligent battery management, the mobile batteries currently on the market will use a combination of batteries and BMS (battery management system) to achieve battery management. Specifically, the battery includes a battery cell module and a BMS module. The battery cell module contains a battery cell and a battery cell motherboard. Various sensors for collecting battery cell-related information are set inside the battery cell. The sensors are then connected to the battery cell motherboard through wires, and the battery cell motherboard is then connected to the BMS module to realize intelligent management of the battery cell using the BMS module. Among them, the BMS main board is installed on one side of the battery module and communicates through wires. At the same time, a head shell is installed on the battery module to cover the BMS main board. Since the BMS main board requires a certain amount of heat dissipation when working, the head shell of the existing battery module is often made of a whole piece of metal. Since a large number of components (BMS main board, plug, indicator light, etc.) are covered inside the head shell, and a handle is also provided on the head shell, the size of the entire head shell cannot be made smaller, resulting in the problem of heavy weight and high cost of the metal head shell; in addition, when the head shell is hit, it is easy to affect the various components inside. During maintenance, many parts need to be replaced, and there is a defect of high maintenance cost. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a battery and a drone, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, a battery is provided, comprising:

[0006] Battery cell module;

[0007] A battery management device is installed on the side of the battery module, the battery management device includes a device protection shell and a battery management mainboard installed in the device protection shell, and the battery management mainboard is electrically connected to the battery module;

[0008] The battery head shell is installed on the battery core module and covers the battery management device to provide protection for the battery management device.

[0009] Optionally, the device protective shell is made of metal.

[0010] Optionally, the battery head shell is made of plastic.

[0011] Optionally, it also includes an external connector electrically connected to the battery management device, and the battery head shell includes a first protective part and a second protective part, the first protective part covers the battery management device, and the second protective part covers the external connector; the first protective part and the second protective part are an integral structure or a combined structure.

[0012] Optionally, a connecting column is provided on the battery management mainboard, and a connecting hole corresponding to the connecting column is provided on the device protective shell, and the connecting column extends out of the device protective shell through the connecting hole; the external connector includes a connecting copper busbar, and the connecting copper busbar is fixedly connected to the connecting column.

[0013] Optionally, the connecting column is provided with a connecting threaded hole, the connecting copper busbar is provided with a positioning hole, and the connecting bolt passes through the positioning hole and is threadedly locked to the connecting threaded hole, so that the connecting copper busbar is fixedly connected to the connecting column.

[0014] Optionally, the battery head shell is provided with heat dissipation holes.

[0015] Optionally, heat dissipation fins are provided on the device protective shell.

[0016] Optionally, the battery management device also includes a first connector, which is electrically connected to the battery management mainboard; the battery cell module includes a second connector, and the first connector is plugged into the second connector to achieve electrical connection between the battery management mainboard and the battery cell module.

[0017] Optionally, the battery cell module includes a battery cell housing and a battery cell body, a battery cell main board and a sensor installed in the battery cell housing, and the battery cell body and the sensor are electrically connected to the battery cell main board respectively; the battery cell housing is provided with a plug hole corresponding to the second connector, and the second connector is electrically connected to the battery cell main board and aligned with the plug hole.

[0018] Optionally, the battery management device further includes a shock absorbing component, which is connected to the first connector and absorbs shock and energy of the first connector through the shock absorbing component.

[0019] Optionally, the first connector is fixed on the battery management mainboard, and the shock absorber is arranged between the first connector and the battery management mainboard; a through hole corresponding to the first connector is arranged on one side of the device protective shell, and the first connector can be plugged and connected with the second connector through the avoidance of the through hole.

[0020] Optionally, the first connector is fixed to the inner wall of the device protective shell, and the shock absorber is arranged between the first connector and the inner wall of the device protective shell; the device protective shell is provided with a through hole corresponding to the first connector, and the first connector can be plugged and connected with the second connector through the avoidance of the through hole.

[0021] Optionally, the first connector is fixed to the outer wall of the device protective shell, and the shock absorber is arranged between the first connector and the outer wall of the device protective shell; the device protective shell is provided with a wire passing hole, and the battery management mainboard is connected with a wire, and the wire extends out of the device protective shell through the wire passing hole and is electrically connected to the first connector.

[0022] Optionally, the battery management device also includes a locking bolt, a first through hole is provided on the first connector, a second through hole is provided on the shock absorber, the locking bolt passes through the first through hole and the second through hole and is threadedly locked to the device protective shell or the battery management mainboard; moreover, the first through hole is a smooth hole; and / or the part of the locking bolt corresponding to the first through hole is a smooth rod.

[0023] Optionally, the device protective shell includes a heat dissipation back shell and a bottom cover, and the heat dissipation back shell and the bottom cover enclose an installation cavity capable of accommodating the battery management mainboard; the battery management mainboard is fixed to the heat dissipation back shell.

[0024] Optionally, a third through hole is provided on the battery management main board, a threaded hole is provided on the heat dissipation back shell, and the locking bolt passes through the first through hole, the second through hole and the third through hole in sequence and is threadedly locked to the threaded hole.

[0025] Optionally, the first connector includes a flexible flat cable, a circuit board and a plug-in terminal, the plug-in terminal is fixed on the circuit board, the circuit board is connected to the shock absorber, and the flexible flat cable electrically connects the circuit board and the battery management mainboard.

[0026] Optionally, a waterproof ring is provided on one side of the device protective shell for fitting with the battery cell module, and the waterproof ring is arranged around the first connector. The waterproof ring can fit tightly against the surface of the battery cell module to seal the first connector and the second connector after plug-in connection.

[0027] On the other hand, a drone is provided, comprising the above-mentioned battery.

[0028] The beneficial effects of the present application are as follows: the present invention provides a battery and a drone. In the structure of the battery management device, a device protection shell is provided separately for the battery management mainboard. The device protection shell only needs to be set according to the size of the battery management mainboard. Compared with the entire battery head shell, the device protection shell is smaller in size. When the device protection shell adopts a metal material with better thermal conductivity, its weight is lighter than the traditional metal head shell. In addition, a battery head shell cover battery management device is also provided. On the basis of the internal device protection shell adopting a metal material with good thermal conductivity, the battery head shell can adopt a lightweight plastic structure. Therefore, in general, the structure of this scheme can achieve the beneficial effect of reducing the weight of the battery. In addition, for the internal battery management mainboard, this scheme is equivalent to providing a double protection structure. When it is hit by external force, the battery head shell will absorb energy and be damaged first. Under the isolation effect of the device protection shell, the internal battery management mainboard can be effectively protected from impact, thereby reducing the maintenance cost after the impact.

[0029] In drone applications, weight requirements are more sensitive, and reducing the weight of drone accessories means that the drone's load capacity can be increased. On the basis of providing the same battery capacity, compared with traditional batteries, the battery structure of this solution is lighter, and its application in the field of drones has more obvious advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present application is further described in detail below based on the drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of an explosion of a battery according to an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the structure of the battery in the embodiment of the present application after the second protective part is hidden;

[0033] Figure 3 for Figure 2 An exploded schematic diagram of the structure shown;

[0034] Figure 4 This is a schematic diagram of the internal structure of the battery described in the embodiment of the present application;

[0035] Figure 5 A cross-sectional view of the internal structure of the battery described in the embodiment of the present application;

[0036] Figure 6 for Figure 5 A magnified image of area A;

[0037] Figure 7 This is a schematic diagram of the structure of the battery management device described in the embodiment of the present application;

[0038] Figure 8A schematic structural diagram of the battery management device according to an embodiment of the present application from another perspective;

[0039] Fig. 9 This is one of the exploded schematic diagrams of the battery management device described in the embodiment of the present application;

[0040] Fig.10 This is the second explosion diagram of the battery management device described in the embodiment of the present application.

[0041] In the figure:

[0042] 1. Cell module; 11. Cell shell; 12. Cell body; 13. Second connector; 14. Cell mainboard; 2. Battery management device; 21. Device protection shell; 211. Heat dissipation back shell; 2111. Heat dissipation fins; 2112. Connection holes; 212. Bottom cover; 2121. Through holes; 22. Battery management mainboard; 221. Connection column; 222. Third through hole; 23. First connector; 231. Plug terminal; 232. Circuit board; 2321. First through hole; 24. Shock absorber; 241. Second through hole; 25. Locking bolt; 3. Battery head shell; 31. First protective part; 311. Heat dissipation hole; 32. Second protective part; 4. External connector; 41. Connecting copper busbar; 5. Waterproof ring. DETAILED DESCRIPTION

[0043] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0044] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] Many mobile power-consuming devices are equipped with mobile batteries for power supply, such as drones, agricultural machinery, electric vehicles, etc. In order to realize intelligent battery management, the mobile batteries currently on the market will use a combination of batteries and BMS (battery management system) to achieve battery management. Specifically, the battery includes a battery cell module and a BMS module. The battery cell module contains a battery cell and a battery cell motherboard. Various sensors for collecting battery cell-related information are set inside the battery cell. The sensors are then connected to the battery cell motherboard through wires, and the battery cell motherboard is then connected to the BMS module to realize intelligent management of the battery cell using the BMS module. Among them, the BMS main board is installed on one side of the battery module and communicates through wires. At the same time, a head shell is installed on the battery module to cover the BMS main board. Since the BMS main board requires a certain amount of heat dissipation when working, the head shell of the existing battery module is often made of a whole piece of metal. Since a large number of components (BMS main board, plug, indicator light, etc.) are covered inside the head shell, and a handle is also provided on the head shell, the size of the entire head shell cannot be made smaller, resulting in the problem of heavy weight and high cost of the metal head shell; in addition, when the head shell is hit, it is easy to affect the various components inside. During maintenance, many parts need to be replaced, and there is a defect of high maintenance cost.

[0047] In order to overcome the above technical problems, the present embodiment provides a battery, which provides reliable protection for the battery management mainboard 22 and meets the requirement of accelerating the heat dissipation of the battery management mainboard 22, thereby achieving the purpose of reducing the weight of the battery.

[0048] Reference Figure 1-3 The battery of this embodiment includes a battery cell module 1, a battery management device 2 and a battery head shell 3. The battery management device 2 is installed on the side of the battery cell module 1. The battery management device 2 includes a device protection shell 21 and a battery management mainboard 22 installed in the device protection shell 21. The battery management mainboard 22 is electrically connected to the battery cell module 1; the battery head shell 3 is installed on the battery cell module 1 and covers the battery management device 2 to provide protection for the battery management device 2.

[0049] In this solution, a device protection shell 21 is provided separately for the battery management mainboard 22. The device protection shell 21 only needs to provide an inner cavity capable of accommodating the battery management mainboard 22, so the device protection shell 21 can be set according to the size of the battery management mainboard 22. In order to promote the heat dissipation of the battery management mainboard 22, the device protection shell 21 is preferably made of metal, such as aluminum.

[0050] The battery head shell 3 covers the head of the battery module 1. In a specific configuration, in addition to covering the battery management device 2, it can also cover the external connector 4, indicator lights, and various necessary connection terminals, copper bars, etc. Its size is larger and is generally set according to the size of the head of the battery module 1. For easy carrying, a handle can also be set on the battery head shell 3.

[0051] In summary, based on the battery of this embodiment, in the structure of the battery management device 2, a device protection shell 21 is provided separately for the battery management mainboard 22. The device protection shell 21 only needs to be set according to the size of the battery management mainboard 22. Compared with the entire battery head shell 3, the device protection shell 21 is smaller in size. When the device protection shell 21 is made of a metal material with better thermal conductivity, its weight is lighter than the traditional metal head shell. In addition, a battery head shell 3 is also provided to cover the battery management device 2. On the basis that the internal device protection shell 21 is made of a metal material with good thermal conductivity, the battery head shell 3 can be made of a lightweight plastic structure. Therefore, in general, the structure of this scheme can achieve the beneficial effect of reducing the weight of the battery. In addition, for the internal battery management mainboard 22, this scheme is equivalent to providing a double protection structure. When it is hit by an external force, the battery head shell 3 will absorb energy and be damaged first. Under the isolation effect of the device protection shell 21, the internal battery management mainboard 22 can be effectively protected from impact, thereby reducing the maintenance cost after the impact.

[0052] In drone applications, weight requirements are more sensitive, and reducing the weight of drone accessories means that the drone's load capacity can be increased. On the basis of providing the same battery capacity, compared with traditional batteries, the battery structure of this solution is lighter, and its application in the field of drones has more obvious advantages.

[0053] In one embodiment, the device protection shell 21 is made of metal.

[0054] Metal materials have good thermal conductivity. When the battery management motherboard 22 generates heat during operation, the metal device protective shell 21 can effectively conduct the heat away, thereby keeping the temperature of the motherboard within a reasonable range and avoiding performance degradation or potential safety risks caused by overheating. Moreover, metal materials usually have high strength and hardness and can withstand a certain degree of physical impact and extrusion, which is crucial for protecting the battery management motherboard 22 from external collision and vibration damage. In addition, the metal device protective shell 21 can also provide a certain electromagnetic shielding effect, reduce the impact of external electromagnetic interference on the internal circuit of the battery management motherboard 22, and improve the stability and reliability of the system.

[0055] Preferably, the device protection shell 21 is made of aluminum, which has the advantages of good thermal conductivity and light weight.

[0056] In one embodiment, the battery head shell 3 is made of plastic.

[0057] On the basis that the battery management mainboard 22 has a device protective shell 21 to provide protection and heat dissipation, the battery head shell 3 made of plastic material has lower density and weight, which helps to reduce the weight of the entire battery assembly and improve the portability and endurance of the device, especially in weight-sensitive applications such as drones and electric vehicles. The production cost of plastic materials is usually low and easy to process and shape, which helps to reduce the manufacturing cost of the battery head shell 3 and improve the competitiveness of the product.

[0058] In one embodiment, the battery also includes an external connector 4 electrically connected to the battery management device 2, and the battery head shell 3 includes a first protective part 31 and a second protective part 32, the first protective part 31 covers the battery management device 2, and the second protective part 32 covers the external connector 4; the first protective part 31 and the second protective part 32 are an integral structure or a combined structure.

[0059] Specifically, the external connector 4 is used to connect to an external charging device or power-consuming device to realize the charging or discharging function of the battery. For example, after the battery is installed on the drone, the power line on the drone can be connected to the external connector 4 to realize power supply from the battery; when the battery is removed and connected to the charger, the battery can be charged.

[0060] The battery head shell 3 is provided with a first protection part 31 and a second protection part 32 , which can not only provide protection for the battery management device 2 , but also provide protection for the external connector 4 , thereby improving the safety of the battery.

[0061] Preferably, the first protective part 31 and the second protective part 32 are a combined structure, that is, the first protective part 31 and the second protective part 32 are formed separately during processing, and then assembled and fixed to the battery module 1 during installation. This structure has the advantages of easy assembly and processing.

[0062] In one embodiment, referring to Figure 3 The battery management mainboard 22 is provided with a connecting column 221, and the device protective shell 21 is provided with a connecting hole 2112 corresponding to the connecting column 221, and the connecting column 221 extends out of the device protective shell 21 through the connecting hole 2112; the external connector 4 includes a connecting copper bus 41, and the connecting copper bus 41 is fixedly connected to the connecting column 221.

[0063] The connection posts 221 provided on the battery management mainboard 22 are key electrical connection points. They are responsible for establishing electrical connection between the battery management mainboard 22 and external devices. These connection posts 221 are usually made of metal materials with good electrical conductivity (such as copper) to ensure the stability and reliability of the electrical connection. The connection holes 2112 designed on the device protective shell 21 correspond to the connection posts 221 one by one. They allow the connection posts 221 to pass through the protective shell and extend to the outside. This design not only protects the battery management mainboard 22 from external impact and pollution, but also ensures unimpeded electrical connection. The size and shape of the connection holes 2112 need to be precisely designed to ensure that the connection posts 221 can pass through smoothly and fit tightly.

[0064] In one embodiment, the connecting column 221 is provided with a connecting threaded hole, and the connecting copper busbar 41 is provided with a positioning hole. The connecting bolt passes through the positioning hole and is threadedly locked to the connecting threaded hole, so that the connecting copper busbar 41 is fixedly connected to the connecting column 221 .

[0065] The copper bar 41 and the connecting column 221 are fixedly connected by threaded locking, which can generate a large fastening force to ensure that the connection between the two is firm and reliable. This connection method is not easy to loosen and can withstand large vibrations and shocks. In addition to being able to establish an electrical connection between the external connector 4 and the battery management mainboard 22, this structure can also use a reliable fixed structure to provide reliable support for the external connector 4. In this way, there is no need to set a fixed structure for the external connector 4 separately, which has the advantage of a simplified structure. In addition, the threaded locking connection method is relatively simple, and installation or disassembly can be completed by simply using a tool to rotate the connecting bolt, which not only improves work efficiency, but also facilitates subsequent maintenance and replacement.

[0066] In one embodiment, the battery head shell 3 is provided with heat dissipation holes 311 .

[0067] Specifically, when the battery management mainboard 22 is working, heat is transferred to the device protective shell 21, and the heat dissipation holes 311 are set on the battery head shell 3, which can accelerate the circulation of air on the surface of the device protective shell 21, thereby accelerating the heat dissipation efficiency of the battery management device 2 and maintaining the stable operation of the battery management mainboard 22.

[0068] It should be noted that in this solution, a heat dissipation hole 311 is provided on the battery head shell 3 on the basis of the protective shell 21 providing waterproof and dustproof protection for the battery management mainboard 22. This structure is achieved without affecting the safety of the battery management mainboard 22.

[0069] In one embodiment, the device protection shell 21 is provided with heat dissipation fins 2111 .

[0070] The heat dissipation fins 2111 can significantly increase the surface area of ​​the device protective shell 21, thereby more effectively conducting the heat generated by the battery management mainboard 22 to the air to achieve rapid heat dissipation.

[0071] In one embodiment, referring to Figure 6 The battery management device 2 also includes a first connector 23, which is electrically connected to the battery management mainboard 22; the battery cell module 1 includes a second connector 13, which is plug-connected with the second connector 13 to achieve electrical connection between the battery management mainboard 22 and the battery cell module 1.

[0072] In traditional smart batteries, the connection between the cell module 1 and the BMS is often achieved by connecting the cell mainboard 14 to the BMS mainboard through wires, and a set of wires is required for each sensor. With the development of battery technology, more and more sensors are installed inside the cells, and the number of wires connecting the cell mainboard 14 and the BMS mainboard has also increased, which has brought about problems: increased battery costs, increased complexity in battery manufacturing, and reduced reliability.

[0073] The core of the scheme of this embodiment is to gather multiple connection points on the battery management mainboard 22 to the first connector 23, and correspondingly, multiple connection points on the battery mainboard 14 in the battery module 1 are gathered to the second connector 13. When the battery management device 2 and the battery module 1 are assembled, the first connector 23 can be used to directly plug in the second connector 13 on the battery module 1, without the need to use complicated multiple wires to connect the multiple connection points of the battery management mainboard 22 and the battery mainboard 14 one by one. Therefore, the connection structure of this scheme does not need to consume too much wire, simplifies the connection structure of the battery management device 2 and the battery module 1, and reduces the number of wires and connection points, which means that potential failure points are reduced and reliability performance is improved. At the same time, when the battery management mainboard 22 or the battery module 1 needs to be replaced or upgraded, it is only necessary to simply plug or unplug the connector, without the need to disassemble and connect multiple wires one by one, which greatly improves the convenience of maintenance and upgrading.

[0074] The first connector 23 and the second connector 13 need to be set correspondingly. When the first connector 23 is set as a male socket, the second connector 13 is set as a female socket; when the first connector 23 is set as a female socket, the second connector 13 is set as a male socket. The first connector 23 can be fixed to the device protective shell 21, or it can be fixed to the outside of the device protective shell 21; it can be directly fixed to the device protective shell 21, or it can be indirectly fixed to the fixing structure inside the device protective shell 21, such as fixed to the battery management mainboard 22.

[0075] In one embodiment, the battery cell module 1 includes a battery cell housing 11 and a battery cell body 12, a battery cell main board 14 and a sensor installed in the battery cell housing 11, and the battery cell body 12 and the sensor are electrically connected to the battery cell main board 14 respectively; the battery cell housing 11 is provided with a plug hole corresponding to the second connector 13, and the second connector 13 is electrically connected to the battery cell main board 14 and aligned with the plug hole.

[0076] The sensor is arranged in the battery body 12 to collect various working information of the battery body 12, including but not limited to temperature, pressure, current, voltage and other information. The battery main board 14 is the control center inside the battery module 1, responsible for processing the data collected by the sensor and executing the corresponding control strategy. The sensor is connected to the battery main board 14 and uploads the collected information to the battery main board 14. After the battery management device 2 is plugged and fixed to the battery module 1, the battery main board 14 can transmit the collected signal to the battery management main board 22 through the second connector 13 and the first connector 23.

[0077] The plug hole is provided on the cell housing 11, so that the second connector 13 can be directly connected to the cell main board 14 installed in the cell housing 11, and the plug connection requirement of the first connector 23 and the second connector 13 is met. This structure can use the cell housing 11 to provide sufficient protection for the cell body 12, the cell main board 14, and the sensor and other structures, and ensure the safety of the cell module 1.

[0078] In one embodiment, the battery management device 2 further includes a shock absorbing member 24 , and the shock absorbing member 24 is connected to the first connector 23 , and the shock absorbing member 24 is used to absorb shock and energy of the first connector 23 .

[0079] The setting of the shock absorber 24 can be implemented in a spring type, a flexible gasket type, etc. The shock absorber 24 should be firmly fixed in the battery management device 2 to ensure that it can stably support the first connector 23. During installation, the shock absorber 24 can be connected to the device protective shell 21 by bolts, buckles, adhesives or other fasteners. At the same time, there should also be an appropriate connection method between the shock absorber 24 and the first connector 23 to ensure that the first connector 23 can be stably installed on the shock absorber 24. Alternatively, the shock absorber 24 can be directly pressed into the battery management device 2 by fixing the first connector 23.

[0080] Optionally, the shock absorber 24 adopts a flexible gasket structure, and in this case, it is made of materials with good shock absorption and energy absorption properties, such as rubber, silicone, polyurethane, etc. These materials can effectively absorb and disperse vibration energy and reduce the impact on the connector. The shock absorber 24 set with a flexible gasket structure has the advantages of simple structure, low cost and easy installation. In the specific design, the structure of the shock absorber 24 can be customized according to the shape, size and weight of the connector, as well as the expected vibration environment. For example, a suitable rubber pad is customized according to the size and shape of the first connector 23, and the rubber pad should have a certain thickness and elasticity to ensure that it can effectively absorb vibration energy; then, the rubber pad is fixed on the device protective shell 21 of the battery management device 2, and the rubber pad can be tightly connected to the device protective shell 21 using fasteners such as bolts or snaps. After that, the connector is installed on the rubber pad, and the connector should be firmly placed on the rubber pad, and ensure that there is a certain contact area and tightness between it and the rubber pad.

[0081] This solution sets a shock absorber 24 for fixing the first connector 23. The shock absorber 24 can absorb shock and energy for the first connector 23. In a vibrating working environment, it can effectively reduce the vibration transmission between the device protective shell 21 and the first connector 23, improve the stability of the first connector 23, and effectively ensure the reliability of the connection between the first connector 23 and the second connector 13. Especially when used in high-vibration working scenes such as drones, agricultural machinery, and electric vehicles, the power supply system is in a frequently vibrating working environment for a long time, and the advantages of setting the shock absorber 24 in this solution are particularly obvious.

[0082] In one embodiment, the first connector 23 is fixed on the battery management mainboard 22, and the shock absorber 24 is arranged between the first connector 23 and the battery management mainboard 22; a through hole 2121 corresponding to the first connector 23 is provided on one side of the device protective shell 21, and the first connector 23 can be plugged and connected with the second connector 13 through the avoidance of the through hole 2121.

[0083] The first connector 23 is arranged on the battery management main board 22, so that the first connector 23 and the battery management main board 22 are overlapped. Therefore, the shape and size of the inner cavity of the device protection shell 21 only need to be set according to the shape and size of the battery management main board 22, and there is no need to provide more space to accommodate the connector separately. Therefore, this structure is conducive to the miniaturization of the outer dimensions of the device protection shell 21 and the compactness of the internal structure. In addition, the first connector 23 fixed on the battery management main board 22 is more convenient for the electrical interconnection between the first connector 23 and the battery management main board 22.

[0084] The design of the through hole 2121 enables the first connector 23 to be easily plugged and connected with the second connector 13 on the battery module 1. In the specific design, the first connector 23 can be completely set in the device protective shell 21, and the second connector 13 needs to be inserted into the through hole 2121 to connect with the first connector 23 when plugging in; or the plug-in part of the first connector 23 can extend out of the device protective shell 21 through the through hole 2121, so that it can be easily connected with the second connector 13.

[0085] In another embodiment, the first connector 23 is fixed to the inner wall of the device protective shell 21, and the shock absorber 24 is arranged between the first connector 23 and the inner wall of the device protective shell 21; the device protective shell 21 is provided with a through hole 2121 corresponding to the first connector 23, and the first connector 23 can be plugged and connected with the second connector 13 through the avoidance of the through hole 2121.

[0086] By setting the first connector 23 inside the device protective shell 21, the device protective shell 21 can provide reliable protection for it and reduce the risk of the connector being damaged by impact. At the same time, there is no need to set additional fixings or connecting parts outside the device protective shell 21 to fix the first connector 23, making the overall structure more compact and beautiful.

[0087] Similarly, the design of the through hole 2121 enables the first connector 23 to be easily plugged and connected with the second connector 13 on the battery module 1. In the specific design, the first connector 23 can be completely set in the device protective shell 21, and the second connector 13 needs to be inserted into the through hole 2121 to connect with the first connector 23 when plugging in; or the plug-in part of the first connector 23 can extend out of the device protective shell 21 through the through hole 2121, so that it can be easily connected with the second connector 13.

[0088] In another embodiment, the first connector 23 is fixed to the outer wall of the device protective shell 21, and the shock absorber 24 is arranged between the first connector 23 and the outer wall of the device protective shell 21; the device protective shell 21 is provided with a wire passing hole, and the battery management mainboard 22 is connected with a wire, and the wire extends out of the device protective shell 21 through the wire passing hole and is electrically connected to the first connector 23.

[0089] The first connector 23 is fixed to the outer wall of the device protective shell 21, so that the position of the first connector 23 can be more flexibly adjusted according to actual needs. The first connector 23 can be fixed using screws, buckles or other fastening devices. The wire hole is used to pass the wire to realize the interconnection between the first connector 23 and the battery management mainboard 22. The size of the wire hole should be sufficient for the wire to pass through, while avoiding being too large to cause a decrease in sealing performance. A sealing structure (such as a sealing ring, sealant, etc.) is set around the wire hole to prevent dust, moisture, etc. in the external environment from penetrating into the device protective shell 21.

[0090] In one embodiment, in combination Figure 9-10 The battery management device 2 also includes a locking bolt 25, a first through hole 2321 is provided on the first connector 23, and a second through hole 241 is provided on the shock absorber 24. The locking bolt 25 passes through the first through hole 2321 and the second through hole 241 and is threadedly locked to the device protective shell 21 or the battery management main board 22; moreover, the first through hole 2321 is a light hole; and / or, the portion of the locking bolt 25 corresponding to the first through hole 2321 is a light rod.

[0091] The first connector 23 and the shock absorber 24 are fixed to the device protective shell 21 or the battery management mainboard 22 by using locking bolts 25, which has the advantages of good fixing reliability and easy installation. Moreover, it can ensure that the shock absorber 24 is in close contact with the first connector 23, so that the shock absorber 24 can provide repeated shock-absorbing and energy-absorbing effects for the first connector 23.

[0092] The locking bolt 25 is fixed to the device protection shell 21 or the battery management mainboard 22, that is, the vibration of the device protection shell 21 or the battery management mainboard 22 will be directly transmitted to the locking bolt 25. In this solution, the first through hole 2321 is set as a light hole, and / or the portion of the locking bolt 25 corresponding to the first through hole 2321 is set as a light rod, that is, after installation, there is no thread engagement between the first through hole 2321 and the locking bolt 25, so that the first connector 23 can move slightly relative to the locking bolt 25, that is, it can effectively prevent the locking bolt 25 from completely transmitting the vibration to the first connector 23, so that the shock absorbing member 24 can play an effective shock absorption and energy absorption effect.

[0093] In one embodiment, the device protective shell 21 includes a heat dissipation back shell 211 and a bottom cover 212 , and the heat dissipation back shell 211 and the bottom cover 212 enclose an installation cavity capable of accommodating the battery management mainboard 22 ; the battery management mainboard 22 is fixed to the heat dissipation back shell 211 .

[0094] The device protection shell 21 is designed to include two parts: a heat dissipation back shell 211 and a bottom cover 212, which together enclose a mounting cavity for accommodating the battery management mainboard 22, which not only provides a stable support for the battery management mainboard 22, but also enhances the heat dissipation performance of the system through the heat dissipation back shell 211. The heat dissipation back shell 211 is usually made of a material with good thermal conductivity, such as aluminum alloy, which can quickly conduct the heat generated by the battery management mainboard 22 to the external environment to maintain the stable operation of the battery management mainboard 22.

[0095] In one embodiment, a third through hole 222 is provided on the battery management main board 22, a threaded hole is provided on the heat dissipation back shell 211, and the locking bolt 25 passes through the first through hole 2321, the second through hole 241 and the third through hole 222 in sequence and is threadedly locked in the threaded hole.

[0096] This method realizes fixing the first connector 23 on the battery management mainboard 22, realizing the overlapping arrangement of the two, and realizing the compactness of the internal structure of the battery management device 2. In addition, the threaded hole for thread-locking the locking bolt 25 is finally set on the heat dissipation back shell 211, and the material of the heat dissipation back shell 211 is more solid and reliable, so that the reliability of the threaded connection of the locking bolt 25 can be ensured, thereby ensuring the reliability of the fixing of the first connector 23.

[0097] In one embodiment, the first connector 23 includes a flexible flat cable, a circuit board 232 and a plug-in terminal 231, the plug-in terminal 231 is fixed on the circuit board 232, the circuit board 232 is connected to the shock absorber 24, and the flexible flat cable electrically connects the circuit board 232 and the battery management main board 22.

[0098] The flexible flat cable is a circuit connection material with high flexibility and high reliability, which can realize complex circuit connection in a limited space. In this embodiment, the flexible flat cable is responsible for electrically connecting the circuit board 232 with the battery management mainboard 22. Due to its flexible characteristics, it can adapt to the connection requirements of different shapes and sizes, while reducing the space occupied. Importantly, the setting of the flexible flat cable can effectively isolate the vibration transmission between the circuit board 232 and the device protective shell 21 or the battery management mainboard 22, so that the shock absorber 24 can fully play its role of shock absorption and energy absorption.

[0099] The circuit board 232 is the core component of the first connector 23, on which various electronic components and circuit wiring are integrated to achieve specific electrical functions. The circuit board 232 provides a mounting base for the plug-in terminal 231, so that the plug-in terminal 231 can be firmly fixed on the circuit board 232. The plug-in terminal 231 is a key component for achieving electrical connection in the first connector 23, and usually has a specific shape and size so as to match and connect with the corresponding second connector 13.

[0100] In one embodiment, a waterproof ring 5 is provided on one side of the device protective shell 21 for fitting with the battery module 1. The waterproof ring 5 is arranged around the first connector 23. The waterproof ring 5 can fit tightly against the surface of the battery module 1 to seal the first connector 23 and the second connector 13 after plug-in connection.

[0101] Specifically, regarding the fixation of the waterproof ring 5, a groove surrounding the first connector 23 can be set on the outer wall of the device protective shell 21, and the waterproof ring 5 can be snapped into the groove for fixation, or it can be fixed by gluing, or it can be fixed by a combination of snapping and gluing.

[0102] After the battery management device 2 of this embodiment is inserted into the battery module 1, the waterproof ring 5 can be closely attached to the surface of the battery module 1 to form an effective sealing barrier, thereby ensuring the sealing of the interface between the first connector 23 and the second connector 13 to prevent the intrusion of water and moisture. The presence of the waterproof ring 5 not only improves the waterproof performance, but also enhances the overall reliability of the connector. It can absorb and disperse the vibration transmission between the battery module 1 and the battery management device 2 to a certain extent, protecting the electronic components inside the battery management device 2 from damage.

[0103] Based on the existence of the waterproof ring 5, the heat dissipation hole 311 is set on the battery head shell 3, and it will not cause any problem affecting the safety of the connection between the first connector 23 and the second connector 13.

[0104] In one embodiment, the device protection shell 21 of the battery management device 2 is fixed to the battery cell housing 11 by mounting bolts.

[0105] The mounting bolts provide a strong locking force, which can ensure a stable connection between the device protective shell 21 of the battery management device 2 and the battery cell housing 11. Even in a vibration or impact environment, the stability of the connection can be maintained to prevent the first connector 23 and the second connector 13 from being damaged by excessive force. By connecting with the mounting bolts, the battery management device 2 can be easily installed on the battery cell housing 11, and it is also convenient for disassembly and maintenance when necessary. Specifically, a connection hole 2112 can be set on the device protective shell 21, and a corresponding threaded mounting hole can be set on the battery cell housing 11. The mounting bolt passes through the connection hole 2112 and is locked to the threaded mounting hole.

[0106] On the other hand, this embodiment also provides a drone, comprising the above-mentioned battery.

[0107] Similarly, based on the battery provided in this embodiment, a drone using the battery has the advantages of high safety, good reliability, and light weight.

[0108] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0109] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0110] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0111] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A battery, characterized in that: include: Battery cell module (1); A battery management device (2) is installed on the side of the battery module (1), the battery management device (2) comprises a device protection shell (21) and a battery management mainboard (22) installed in the device protection shell (21), and the battery management mainboard (22) is electrically connected to the battery module (1); A battery head shell (3) is mounted on the battery core module (1) and covers the battery management device (2) to provide protection for the battery management device (2).

2. The battery according to claim 1, characterized in that The device protection shell (21) is made of metal.

3. The battery according to claim 1, characterized in that The battery head shell (3) is made of plastic.

4. The battery according to claim 1, characterized in that The battery head shell (3) further comprises an external connector (4) electrically connected to the battery management device (2); the battery head shell (3) comprises a first protective portion (31) and a second protective portion (32); the first protective portion (31) covers the battery management device (2), and the second protective portion (32) covers the external connector (4); the first protective portion (31) and the second protective portion (32) are an integral structure or a combined structure.

5. The battery according to claim 4, characterized in that The battery management mainboard (22) is provided with a connection column (221), the device protection shell (21) is provided with a connection hole (2112) corresponding to the connection column (221), and the connection column (221) extends out of the device protection shell (21) through the connection hole (2112); the external connector (4) comprises a connection copper busbar (41), and the connection copper busbar (41) is fixedly connected to the connection column (221).

6. The battery according to claim 5, characterized in that The connecting column (221) is provided with a connecting threaded hole, and the connecting copper busbar (41) is provided with a positioning hole. The connecting bolt passes through the positioning hole and is threadedly locked to the connecting threaded hole, so that the connecting copper busbar (41) is fixedly connected to the connecting column (221).

7. The battery according to claim 1, characterized in that The battery head shell (3) is provided with heat dissipation holes (311).

8. The battery according to claim 1, characterized in that The device protection shell (21) is provided with heat dissipation fins (2111).

9. The battery according to claim 1, characterized in that The battery management device (2) further comprises a first connector (23), the first connector (23) being electrically connected to the battery management mainboard (22); the battery cell module (1) comprises a second connector (13), the first connector (23) and the second connector (13) being plug-connected to achieve electrical connection between the battery management mainboard (22) and the battery cell module (1).

10. The battery according to claim 9, characterized in that The battery cell module (1) comprises a battery cell housing (11), a battery cell body (12), a battery cell main board (14) and a sensor installed in the battery cell housing (11), the battery cell body (12) and the sensor being electrically connected to the battery cell main board (14) respectively; the battery cell housing (11) is provided with a plug hole corresponding to the second connector (13), and the second connector (13) is electrically connected to the battery cell main board (14) and aligned with the plug hole.

11. The battery according to claim 9, characterized in that The battery management device (2) further comprises a shock absorbing member (24), wherein the shock absorbing member (24) is connected to the first connector (23), and the shock absorbing member (24) is used to absorb shock and energy of the first connector (23).

12. The battery according to claim 11, characterized in that The first connector (23) is fixed on the battery management mainboard (22), and the shock absorbing member (24) is arranged between the first connector (23) and the battery management mainboard (22); a through hole (2121) corresponding to the first connector (23) is arranged on one side of the device protection shell (21), and the first connector (23) can be plugged and connected with the second connector (13) by avoiding the through hole (2121).

13. The battery according to claim 11, characterized in that The first connector (23) is fixed to the inner wall of the device protective shell (21), and the shock absorbing member (24) is arranged between the first connector (23) and the inner wall of the device protective shell (21); the device protective shell (21) is provided with a through hole (2121) corresponding to the first connector (23), and the first connector (23) can be plugged and connected with the second connector (13) by avoiding the through hole (2121).

14. The battery according to claim 11, characterized in that The first connector (23) is fixed to the outer wall of the device protective shell (21), and the shock absorbing member (24) is arranged between the first connector (23) and the outer wall of the device protective shell (21); the device protective shell (21) is provided with a wire passing hole, the battery management main board (22) is connected with a wire, and the wire extends out of the device protective shell (21) through the wire passing hole and is electrically connected to the first connector (23).

15. The battery according to claim 12, 13 or 14, characterized in that The battery management device (2) further comprises a locking bolt (25), the first connector (23) is provided with a first through hole (2321), the shock absorber (24) is provided with a second through hole (241), the locking bolt (25) passes through the first through hole (2321) and the second through hole (241) and is threadedly locked to the device protective shell (21) or the battery management main board (22); moreover, the first through hole (2321) is a bare hole; and / or the portion of the locking bolt (25) corresponding to the first through hole (2321) is a bare rod.

16. The battery according to claim 15, characterized in that The device protection shell (21) comprises a heat dissipation back shell (211) and a bottom cover (212); the heat dissipation back shell (211) and the bottom cover (212) enclose a mounting cavity capable of accommodating the battery management mainboard (22); and the battery management mainboard (22) is fixed to the heat dissipation back shell (211).

17. The battery according to claim 16, characterized in that The battery management main board (22) is provided with a third through hole (222), the heat dissipation back shell (211) is provided with a threaded hole, and the locking bolt (25) sequentially passes through the first through hole (2321), the second through hole (241) and the third through hole (222) and is threadedly locked to the threaded hole.

18. The battery according to claim 11, characterized in that The first connector (23) comprises a flexible flat cable, a circuit board (232) and a plug-in terminal (231), the plug-in terminal (231) being fixed on the circuit board (232), the circuit board (232) being connected to the shock absorbing member (24), and the flexible flat cable electrically connecting the circuit board (232) and the battery management mainboard (22).

19. The battery according to claim 9, characterized in that A waterproof ring (5) is provided on one side of the device protective shell (21) for being in contact with the battery module (1); the waterproof ring (5) is arranged around the first connector (23); the waterproof ring (5) can be in contact with the surface of the battery module (1) to seal the first connector (23) and the second connector (13) after being plugged in and connected.

20. A drone, characterized in that: A battery comprising any one of claims 1 to 19.

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