Battery pack and energy storage power supply

Abstract

According to the battery pack and the energy storage power supply, the battery pack comprises a shell, a plurality of battery cells, an electric connecting piece, a control circuit board and an acquisition assembly, a plurality of first through holes are formed in the inner wall of the shell, one ends of the battery cells are fixed to the corresponding positions of the first through holes, and electrodes of the battery cells communicate with the outside of the shell through the first through holes; the electric connecting piece is arranged outside the shell and is electrically connected with the electrode of the battery cell through the first through hole; the control circuit board is arranged in the shell, the collection assembly is arranged outside the shell and electrically connected with the electrodes of the battery cells, a second through hole is further formed in the shell, and the collection assembly penetrates through the second through hole and is electrically connected with the control circuit board. According to the battery pack provided by the invention, the first through holes are formed in the shell to fix the battery cells, so that the size of the battery pack is reduced. Besides, the electrode extends out of the shell, and then the acquisition assembly is arranged outside the shell and is connected with the electrode, so that the volume of the battery pack can be further reduced, and the original functions are ensured while the volume is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and more particularly, to a battery pack and an energy storage power supply. Background Art

[0002] In the related art, a collection component is usually used to collect real-time data of the battery cells inside the energy storage power supply. In order to facilitate the connection of the collection component to the battery cells and the control circuit board respectively, the collection component is usually arranged inside the energy storage power supply. Such an arrangement, although facilitating the connection of the collection component to the battery cells and the control circuit board respectively, requires opening the shell of the energy storage power supply during maintenance due to the collection component being arranged inside the energy storage power supply, resulting in complex operations. On the other hand, arranging the collection component inside the energy storage power supply requires reserving a larger space inside the energy storage power supply, increasing the volume of the energy storage power supply. Summary of the Utility Model

[0003] Embodiments of the present application provide a battery pack and an energy storage power supply.

[0004] The battery pack according to the embodiments of the present application includes:

[0005] A housing, with a plurality of first through holes opened on the inner wall of the housing;

[0006] A plurality of battery cells, one end of the plurality of battery cells being fixed at corresponding positions of the first through holes, and the electrodes of the battery cells being connected to the outside of the housing through the first through holes;

[0007] An electrical connector, arranged outside the housing, and the first through holes providing a connection channel for electrically connecting the electrical connector to the electrodes of the battery cells;

[0008] A control circuit board, arranged inside the housing;

[0009] A collection component, arranged outside the housing and electrically connected to the electrical connector, and a second through hole is also opened on the housing, and the collection component passes through the second through hole and is electrically connected to the control circuit board.

[0010] For the battery pack provided by the present application, by opening the first through holes on the housing to fix the battery cells, the bracket can be omitted, thus facilitating the reduction of the volume of the battery pack. In addition, by extending the electrodes outside the housing and then arranging the collection component outside the housing and connecting it to the electrodes, the volume of the battery pack can be further reduced. Moreover, by opening the second through hole on the housing, the collection component can be connected to the control circuit board arranged inside the housing, so that the control circuit board can control the battery cells according to the signals collected by the collection component, ensuring the original functions while reducing the volume.

[0011] In some embodiments, the first through hole is provided at the bottom of the housing.

[0012] In this way, setting the first through hole at the bottom of the housing is more convenient for the assembly of the battery pack.

[0013] In some embodiments, a receiving groove is provided on the outer side of the bottom of the housing, and at least a part of the acquisition component is arranged in the receiving groove.

[0014] In this way, arranging the acquisition component in the receiving groove can protect the acquisition component and is beneficial to further reducing the volume of the battery pack.

[0015] In some embodiments, the housing further includes a cover plate, and the cover plate is arranged on the housing and covers the receiving groove.

[0016] In this way, the cover plate covers the receiving groove, which can achieve the effects of dust prevention and waterproofing, thereby further protecting the acquisition component.

[0017] In some embodiments, the battery pack further includes a bracket, the bracket is connected to the housing, a fixing groove is provided on the bracket, one end of the battery cell away from the first through hole is fixed in the fixing groove, and the bracket is fixed to the housing, thereby fixing the battery cell in the housing.

[0018] In this way, setting the bracket can fix a plurality of battery cells, which is convenient for the assembly of the battery cells.

[0019] In some embodiments, the housing is provided with a third through hole, and the electrical connector passes through the third through hole and is electrically connected to the control circuit board.

[0020] In this way, the electrical connector can also pass through the third through hole to realize the connection of one end to the battery cell in the housing and the connection of the other end to the control circuit board.

[0021] In some embodiments, the acquisition component includes an acquisition circuit board, the acquisition circuit board includes a main body and a connection part, the main body is arranged outside the housing, and the connection part is connected to the main body and is connected to the control circuit board through the second through hole.

[0022] In this way, the acquisition circuit board has a small thickness, which is beneficial to further reducing the volume of the battery pack.

[0023] In some embodiments, the connection part includes a first connector, the first connector is disposed through the second through hole, the control circuit board includes a second connector, and the connection part and the control circuit board are connected through the cooperation of the first connector and the second connector.

[0024] In this way, the electrical connection between the acquisition component and the control circuit board is realized through the first connector and the second connector, which is beneficial to simplifying the assembly steps of the battery pack, reducing the assembly difficulty, and the first connector is inserted through the through hole, facilitating the insertion.

[0025] In some embodiments, the acquisition component includes a cable, the cable passes through the second through hole, one end is connected to the electrical connection member, and the other end is connected to the control circuit board.

[0026] In this way, using the cable connection makes it more convenient for the first connector and the second connector to be connected.

[0027] In some embodiments, the acquisition component is configured to acquire the voltage and / or temperature of the battery cell, and the control circuit board is configured to control the charging or discharging of the battery cell according to the voltage and / or temperature.

[0028] In this way, by acquiring the voltage and temperature of the battery cell in real time through the acquisition component, it is possible to prevent potential safety hazards caused by charging and discharging the battery pack when the battery cell is abnormal.

[0029] In some embodiments, the electrical connection member and the acquisition component are integrally provided and are electrically connected to the control circuit board through the second through hole.

[0030] In this way, it is convenient for the processing of the electrical connection member and the acquisition component, and at the same time reduces the assembly difficulty.

[0031] In some embodiments, a fixing structure is provided on the inner wall of the housing corresponding to the first through hole, one end of the battery cell is fixed to the fixing structure, and the first through hole is provided at the bottom of the fixing structure.

[0032] In this way, multiple battery cells can be fixed on the housing, facilitating the connection and assembly between other components and the battery cells.

[0033] In some embodiments, the fixing structure is a slot, and one end of the battery cell is inserted into the slot.

[0034] In this way, the slot structure is simple and easy to process, and at the same time is beneficial to reducing the assembly difficulty of the battery cell.

[0035] The energy storage power supply according to another embodiment of the present application includes the battery pack as described in any one of the above and an inverter provided in the housing.

[0036] In some embodiments, the inverter is electrically connected to the control circuit board.

[0037] In this way, the inverter can be controlled by the control circuit board, which is beneficial to reducing the operation difficulty.

[0038] Additional aspects and advantages of embodiments of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of embodiments of the present application. Description of the Drawings

[0039] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0040] Figure 1 is a schematic structural view of a battery pack according to an embodiment of the present application;

[0041] Figure 2 is a schematic view of a module of an energy storage power supply according to an embodiment of the present application;

[0042] Figure 3 is a schematic internal structural view of a battery pack according to an embodiment of the present application;

[0043] Figure 4 is a schematic structural view of a battery pack according to an embodiment of the present application;

[0044] Figure 5 is a schematic structural view of a collection component of a battery pack according to an embodiment of the present application;

[0045] Figure 6 is a schematic structural view of a bottom case of a battery pack according to an embodiment of the present application;

[0046] Figure 7 is a schematic structural view of a bracket of a battery pack according to an embodiment of the present application.

[0047] Main element symbol description: energy storage power supply 1000, battery pack 100, housing 10, first through hole 11, second through hole 12, receiving groove 13, first mounting portion 14, first connecting column 15, cover plate 16, slot 17, battery cell 20, electrode 21, control circuit board 30, second connector 31, collection component 40, collection circuit board 41, main body 411, connecting portion 412, first connector 4121, bracket 50, fixing groove 51, second mounting portion 52, second connecting column 53, electrical connection member 60, collection nickel sheet 61, inverter 200. Detailed Embodiments

[0048] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. 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", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0049] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0050] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0051] The disclosure of the present application provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0052] In the related art, a collection component is usually used to collect the real-time data of the internal battery cells of an energy storage power supply. To facilitate the connection of the collection component to the battery cells and the control circuit board respectively, the collection component is usually arranged inside the energy storage power supply. With such an arrangement, although it is convenient for the collection component to be connected to the battery cells and the control circuit board respectively, since the collection component is arranged inside the energy storage power supply, the outer shell of the energy storage power supply needs to be opened during maintenance, and the operation is complex. On the other hand, arranging the collection component inside the energy storage power supply requires a larger space to be reserved inside the energy storage power supply, increasing the volume of the energy storage power supply.

[0053] Please refer to Figure 1 , an embodiment of the present application provides an energy storage power supply. The energy storage power supply includes a battery pack 100 and an inverter. The inverter is electrically connected to the battery pack 100. The battery pack 100 includes a housing 10, a plurality of battery cells 20, an electrical connector 60, a control circuit board 30, and a collection component 40. A plurality of first through holes 11 are formed in the inner wall of the housing 10. One end of the plurality of battery cells 20 is fixed at the corresponding positions of the first through holes 11. The electrodes 21 of the battery cells 20 communicate with the outside of the housing 10 through the first through holes 11. The electrical connector 60 is arranged outside the housing 10. The first through holes 11 provide a connection channel to electrically connect the electrical connector 60 to the electrodes 21 of the battery cells 20. The control circuit board 30 is arranged inside the housing 10. The collection component 40 is arranged outside the housing 10 and is electrically connected to the electrical connector 60. A second through hole 12 is also formed in the housing 10. The collection component 40 passes through the second through hole 12 and is electrically connected to the control circuit board 30.

[0054] The battery pack 100 provided by the present application can omit the bracket 50 by fixing the battery cells 20 through the first through hole 11 opened on the housing 10, so it is beneficial to reduce the volume of the battery pack 100. In addition, by extending the electrode 21 outside the housing 10 and then arranging the acquisition component 40 outside the housing 10 and connecting it to the electrode 21, the volume of the battery pack 100 can be further reduced. Furthermore, by opening the second through hole 12 in the housing 10, the acquisition component 40 can be connected to the control circuit board 30 arranged inside the housing 10, so that the control circuit board 30 can control the battery cells 20 according to the signals acquired by the acquisition component 40, ensuring the original functions while reducing the volume.

[0055] Specifically, please refer to Figure 2 Figure 2 , the energy storage power supply 1000 includes a battery pack 100 and an inverter 200. The most basic function of the inverter 200 is to convert the DC electrical energy in the energy storage power supply 1000 (such as the electrical energy in energy storage devices such as batteries and supercapacitors) into AC electrical energy to meet the needs of the power grid or load. This conversion enables the energy storage power supply 1000 to flexibly access the power grid or supply power to the load. At the same time, in specific situations, such as when the grid power is sufficient, the inverter 200 can also convert AC into DC and store it in the energy storage power supply 1000 to achieve the storage and reuse of electrical energy.

[0056] Please refer to Figure 1 Figure 1 , the battery pack 100 is a device that can store electrical energy and release it when needed. Its main function is to provide a stable and reliable power supply. When the system needs to store electrical energy, the controller will charge the battery pack, and the battery pack will convert the electrical energy into chemical energy for storage; when the system needs to use electrical energy, the controller first converts the DC electrical energy stored in the battery pack into AC electrical energy and then outputs it.

[0057] In the embodiment of the present application, multiple battery cells 20 are arranged in a vertical array, that is, the length direction of the battery cells 20 is arranged in the vertical direction to ensure the minimum space occupation.

[0058] In other embodiments, multiple battery cells 20 can also be arranged in an array in other directions according to actual needs.

[0059] The acquisition component 40 is responsible for acquiring the status information of each battery cell 20 in the battery pack 100 to accurately manage the battery.

[0060] The control circuit board 30 is an important part of the BMS system. It integrates various electronic components and microprocessors to achieve centralized control of functions such as charging, discharging, protection, balancing, status monitoring, and communication of battery monomers or modules in the battery pack 100.

[0061] Specifically, in the embodiments of the present application, the electrical connector 60 is a busbar. A busbar is a device with high conductivity, high stability, and reliability, used to concentrate or disperse current. In the electrical field, a busbar is also known as a bus or a busbar strip, etc., and is used to connect multiple electrical circuits. The busbar is made of a highly conductive material to ensure the efficiency of current transmission. The busbar also has good current-carrying and transfer capabilities, can quickly respond to grid changes, and ensure the stable operation of the grid.

[0062] In some embodiments, the electrical connector 60 passes through the first through-hole 11 and is electrically connected to the electrode 21 of the battery cell 20.

[0063] In some embodiments, the electrode 21 of the battery cell 20 can also pass through the first through-hole 11 and be electrically connected to the electrical connector 60.

[0064] In some embodiments, the electrical connector 60 and the electrode 21 of the battery cell 20 can also be electrically connected within the first through-hole 11.

[0065] The electrical connector 60 can be formed by sequentially and alternately connecting the positive electrode posts and negative electrode posts of at least one battery cell 20, such that the positive electrode post and the negative electrode post connected to the two ends of the electrical connector 60 are the positive connection port and the negative connection port respectively. That is, the electrical connector 60 connects at least one battery cell 20 in series, so that at least one battery cell 20 forms an output power source with a large voltage, thereby ensuring that the user's power consumption requirements are met.

[0066] In the embodiments of the present application, the electrical connector 60 is in a plate shape. Each electrical connector 60 connects three to six battery cells 20 to achieve the series connection between six battery cells 20. The electrical connector 60 can be made of copper, aluminum, nickel, or alloy materials. After the electrical connector 60 is fixed to the correct position by a working jig, the electrical connector 60 can be welded to the electrode 21 of the battery cell 20 by laser welding. It can be understood that other connection methods such as stranding or pressing can also be used to achieve the electrical connection between the electrical connector 60 and the electrode 21 of the battery cell 20.

[0067] Please refer to Figure 1 and Figure 3 , in some embodiments, the first through-hole 11 is provided at the bottom of the housing 10.

[0068] In this way, providing the first through-hole 11 at the bottom of the housing 10 is more convenient for the assembly of the battery pack 100.

[0069] Specifically, in the embodiments of the present application, the housing 10 includes a top cover, a bottom case, a left side cover, a right side cover, a front side cover, and a rear side cover. The top cover, the bottom case, the left side cover, the right side cover, the front side cover, and the rear side cover are all integrally formed by one-piece injection molding, and then are connected by fasteners or other connection methods.

[0070] In other embodiments, the housing 10 can also be split into any parts according to actual needs. Each part can be an integral structure formed by one-piece processing, or can be generated using other processing methods.

[0071] Further, the top cover, bottom case, left side cover, right side cover, front side cover and rear side cover enclose to form a receiving cavity, and a plurality of battery cells 20 are arranged in the receiving cavity.

[0072] Further, since the first through hole 11 is provided on the bottom case, one end of the battery cell 20 is fixed on the bottom case.

[0073] In other embodiments, one end of the battery cell 20 can also be fixed on the left and right side plates or the front and rear side plates, and can be specifically selected according to actual needs, which is not specified here.

[0074] In the embodiment of the present application, a support portion is further provided on the side of the bottom case away from the battery cell 20, and an anti-slip structure is further provided on the support portion. Optionally, the anti-slip structure can be an anti-slip silicone pad, an anti-slip rubber pad or an anti-slip pattern provided on the support portion.

[0075] In other embodiments, a fixing groove 51 can also be provided on the side of the bottom case away from the battery cell 20, and a relatively thick anti-slip pad is provided in the fixing groove 51. The material of the anti-slip pad can be selected according to actual needs, which is not limited here.

[0076] In the embodiment of the present application, the battery pack 100 further includes an expansion socket. The expansion socket 50 is a socket device designed to solve the problem of insufficient power socket quantity, and the expansion socket is provided on the left and right side plates.

[0077] In other embodiments, the expansion socket can also be provided on at least one of the top cover, bottom case, left side cover, right side cover, front side cover and rear side cover, and can be specifically set according to actual needs, which is not limited here.

[0078] In the embodiment of the present application, two avoidance grooves are provided on the top cover, and the two avoidance grooves correspond to the left and right side plates respectively. The handle passes through the avoidance grooves and is exposed outside the housing 10.

[0079] Further, the handle is made of metal. Specifically, an aluminum alloy material can be selected, and the inside is made hollow, which is beneficial to the light weight of the battery pack 100, and the strength and durability of the aluminum alloy handle are relatively high, which is beneficial to increasing the reliability of the handle and extending the service life of the handle.

[0080] In other embodiments, the two avoidance grooves can also correspond to the front and rear side plates respectively.

[0081] In other embodiments, the handle can also be made of other materials, and can be specifically set according to actual needs, which is not limited here.

[0082] In other embodiments, the handle can also be set as a flexible handle, which has good adaptability and flexibility, and better comfort and touch.

[0083] In some embodiments, a receiving groove 13 is provided on the outer side of the bottom of the housing 10, and the collection assembly 40 is arranged in the receiving groove 13.

[0084] In this way, arranging the collection assembly 40 in the receiving groove 13 can protect the collection assembly 40 and is beneficial to further reducing the volume of the battery pack 100.

[0085] Specifically, in the embodiment of the present application, the outer surface of the bottom case is recessed inward to form the receiving groove 13, and both the first through hole 11 and the second through hole 12 are arranged at the bottom of the receiving groove 13.

[0086] In some embodiments, the housing 10 further includes a cover plate 16, and the cover plate 16 is arranged on the housing 10 and covers the receiving groove 13.

[0087] In this way, the cover plate 16 covering the receiving groove 13 can play a role in dust prevention and waterproofing, thereby further protecting the collection assembly 40.

[0088] Specifically, the cover plate 16 is an integrally formed one-piece structure. Further, an avoidance groove is provided at the edge position of the opening of the receiving groove 13 for arranging the cover plate 16, and the cover plate 16 is in transitional fit or clearance fit with the avoidance groove.

[0089] In the embodiment of the present application, the cover plate 16 and the bottom case are detachably connected by fasteners. In other embodiments, the cover plate 16 and the bottom case can also be detachably connected by other forms such as snaps and mortise and tenon joints.

[0090] Please refer to Figure 1 、 Figure 5 and Figure 7 , in some embodiments, the battery pack 100 further includes a bracket 50. The bracket 50 is connected to the housing 10, and a fixing groove 51 is provided on the bracket 50. One end of the battery cell 20 away from the first through hole 11 is fixed in the fixing groove 51. The bracket is fixed to the housing, thereby fixing the battery cell in the housing.

[0091] In this way, setting the bracket 50 can fix multiple battery cells 20, facilitating the assembly of the battery cells 20.

[0092] Specifically, multiple battery cells 20 are arranged in an array inside the bracket 50 and fixed, so as to facilitate the disassembly, installation and maintenance of the battery pack 100.

[0093] Further, the number of brackets 50 can be one or more, and the specific number can be selected according to actual needs and is not limited herein.

[0094] Please refer toFigure 4 , in some embodiments, the housing 10 is provided with a third through hole, and the electrical connector 60 passes through the third through hole and is electrically connected to the control circuit board 30.

[0095] In this way, the electrical connector 60 can pass through the third through hole to connect one end to the battery cell 20 inside the housing 10 and the other end to the control circuit board 30.

[0096] Specifically, the battery cell 20 is electrically connected to the control circuit board 30 through the electrical connector 60 passing through the third through hole, so that the control circuit board 30 can control the usage of the electrical energy of the battery cell 20. In the embodiments of the present application, the third through hole and the second through hole 12 are the same through hole to facilitate the processing of the third through hole and the second through hole 12.

[0097] In other embodiments, the third through hole and the second through hole 12 may also be different through holes.

[0098] In some embodiments, the electrical connector 60 includes a connected main body 411 and a collecting nickel sheet 61, and the electrical connector 60 is electrically connected to the collecting component 40 through the collecting nickel sheet 61.

[0099] In this way, the electrical connection between the electrical connector 60 and the collecting component 40 is achieved through the collecting nickel sheet 61, which is beneficial to reducing energy loss and improving the efficiency of the device. At the same time, the possibility of the collecting nickel sheet 61 having loose wiring is small, and the connection stability between the electrical connector 60 and the collecting component 40 can be ensured under the action of vibration or external force.

[0100] Specifically, the collecting nickel sheet 61 is a metal sheet used to achieve electrical connection, usually made of pure nickel or nickel alloy. In electronic devices and battery packs, the collecting nickel sheet 61 is often used as a conductive medium for connecting positive and negative electrodes or other electronic components.

[0101] The collecting nickel sheet 61 usually needs to use equipment such as a cutting machine or a laser cutting machine to cut the nickel sheet into the required shape and size according to the design requirements, and then weld the processed nickel sheet to the collecting component 40. Common welding methods include spot welding, laser welding, etc. During the welding process, parameters such as welding temperature, time, and pressure need to be controlled to ensure the welding quality.

[0102] In some embodiments, for the collecting nickel sheet 61 that requires a specific shape, a stamping machine can be used for stamping and forming.

[0103] In some embodiments, it is also possible to consider using electrical connectors 60 made of copper sheets, nickel-plated copper sheets, or other alloy materials.

[0104] Please refer to Figure 4, in some embodiments, the acquisition component 40 includes an acquisition circuit board 41. The acquisition circuit board 41 includes a main body 411 and a connection portion 412. The main body 411 is disposed outside the housing 10, and the connection portion 412 is connected to the main body 411 and is connected to the control circuit board 30 through the second through hole 12.

[0105] In this way, the acquisition circuit board 41 has a small thickness, which is beneficial to further reducing the volume of the battery pack.

[0106] Specifically, the main board is a PCB board, which is disposed outside the housing of the energy storage power supply. The connection portion 412 can be selected according to actual needs. In some embodiments, the connection portion 412 and the main board are an integrally formed one-piece structure, that is, the acquisition circuit board 41 is an overall PCB board.

[0107] Please refer to Figure 4 and Figure 5 , in some embodiments, the connection portion 412 includes a first connector 4121. The first connector 4121 passes through the second through hole 12. The control circuit board 30 includes a second connector 31. The connection portion 412 and the control circuit board 30 are connected through the cooperation of the first connector 4121 and the second connector 31.

[0108] In this way, the electrical connection between the acquisition component 40 and the control circuit board 30 is realized through the first connector 4121 and the second connector 31, which is beneficial to simplifying the assembly steps of the battery pack 100 and reducing the assembly difficulty.

[0109] Specifically, in the embodiment of the present application, the connection portion 412 adopts a flexible circuit board. Both the first connector 4121 and the second connector 31 are male seat terminals. The male seat terminals pass through the second through hole 12 and are electrically connected to the control circuit board 30 through other electrical components.

[0110] In this way, the electrical connection between the male seat terminals and the control circuit board 30 is beneficial to simplifying the assembly steps of the battery pack 100 and reducing the assembly difficulty. And the first connector 4121 passes through the through hole 13, which is convenient for plugging.

[0111] Specifically, the male seat terminal usually refers to the part of the acquisition component with a jack (or female seat) for receiving and fixing the paired plug (or male head). It is an important part in the electrical connection and can be tightly connected to the corresponding plug to ensure the stable transmission of current or signal. In the embodiment of the present application, the male head is disposed at one end of the connecting wire, and the other end of the connecting wire is connected to the control circuit board 30.

[0112] The male socket terminal usually has one or more jacks, and the shapes, sizes, and positions of these jacks are designed according to specific connection requirements to ensure accurate docking with the corresponding plug. It is easy to understand that the male socket terminal often adopts various fixing mechanisms, such as screw locking, snap locking, etc., to prevent the plug from accidentally falling off during use.

[0113] It should be noted that when using the male socket terminal, it is necessary to pay attention to whether its specifications, models, and connection methods match the corresponding plug to ensure the accuracy and reliability of the connection. In addition, it is also necessary to pay attention to the installation and fixing methods of the male socket terminal to avoid electrical failures or safety accidents caused by loosening or falling off.

[0114] In some embodiments, the acquisition component 40 includes a cable. The cable passes through the second through hole 12, one end is connected to the electrical connector 60, and the other end is connected to the control circuit board 30.

[0115] In this way, using the cable connection makes it more convenient for the first connector 4121 and the second connector 31 to be connected.

[0116] Specifically, in the embodiments of the present application, female socket terminals are provided at both ends of the cable. The female socket terminals are cooperatively connected with the male socket terminals to realize the connection of one end of the cable to the acquisition component 40 and the other end to the control circuit board 30.

[0117] In other embodiments of the application, other connectors may also be provided at both ends of the cable, and specific selection can be made according to the models and types of the first connector 4121 and the second connector 31, which will not be elaborated here.

[0118] In some embodiments, the acquisition component 40 is configured to acquire the voltage and / or temperature of the battery cell 20, and the control circuit board 30 is configured to control the charging or discharging of the battery cell 20 according to the voltage and / or temperature.

[0119] In this way, by acquiring the voltage and temperature of the battery cell 20 in real time through the acquisition component 40, it is possible to prevent potential safety hazards caused by charging and discharging the battery pack 100 when the battery cell 20 is abnormal.

[0120] Specifically, in the embodiments of the present application, the control circuit board 30 monitors the voltage of the battery cell 20 in real time through the acquisition component 40. When the voltage of the battery cell 20 reaches the preset charging upper limit, the control circuit board 30 controls the battery cell 20 to stop charging to prevent overcharging; when the voltage of the battery cell 20 drops to the discharging lower limit, the control circuit board 30 will also control the battery cell 20 to stop discharging to prevent overdischarging.

[0121] The temperature information of the battery cell 20 detected by the acquisition component 40 is transmitted to the control circuit board 30. When the temperature exceeds the safety threshold, the control circuit board 30 will activate the temperature protection mechanism, such as reducing the charging current, stopping charging or discharging, etc., to prevent safety accidents caused by overheating of the battery cell 20.

[0122] In some embodiments, the electrical connector 60 and the acquisition component 30 are integrally provided and are electrically connected to the control circuit board 30 through the second through hole 12.

[0123] In this way, it is convenient for the processing of the electrical connector 60 and the acquisition component 30, and at the same time, the assembly difficulty is reduced.

[0124] Specifically, in the embodiments of the present application, the electrical connector 60 and the acquisition component 30 are an integrally formed structure, and the electrical connector 60 and the acquisition component 30 can be realized by methods such as thermoplastic molding.

[0125] Please refer to Figure 5 , in some embodiments, a first mounting portion 14 is provided on the housing 10, a second mounting portion 52 is provided on the bracket 50, and the first mounting portion 14 and the second mounting portion 52 cooperate to fix the control circuit board 30 inside the housing 10.

[0126] In this way, by using the cooperation of the first mounting portion 14 and the second mounting portion 52, it is beneficial to reduce the assembly difficulty.

[0127] Specifically, in the embodiments of the present application, the first mounting portion 14 is provided on the bottom case, and the first mounting portion 14 and the bottom case are an integrally formed structure. Similarly, the second mounting portion 52 is provided on the side of the bracket 50, and the second mounting portion 52 and the bracket 50 are an integrally formed structure.

[0128] Furthermore, a slot is provided on one side of the first mounting portion 14 close to the second mounting portion 52, and an elastic buckle is provided on one side of the second mounting portion 52 close to the first mounting portion 14. The slot and the elastic buckle cooperate to fix the control circuit board 30. Specifically, when installing the control circuit board 30, one side of the control circuit board 30 can be first snapped into the slot, and then the other end is pushed into the elastic buckle, causing the elastic slot to deform until the control circuit board 30 reaches the designated position, and the elastic buckle resets and locks the control circuit board 30.

[0129] Furthermore, the number of the first mounting portions 14 is multiple, and the multiple first mounting portions 14 are evenly arranged on the bottom case. The number of the second mounting portions 52 is also multiple, and the multiple second mounting portions 52 are evenly arranged on the side of the bracket 50.

[0130] In other embodiments, the number and structure of the first mounting portion 14 and the second mounting portion 52 can also be designed, and can be specifically selected according to actual needs, and will not be elaborated here.

[0131] In some embodiments, a fixing structure is provided on the inner wall of the housing 10 corresponding to the first through hole 11. One end of the battery cell 20 is fixed to the fixing structure, and the first through hole 11 is provided at the bottom of the fixing structure.

[0132] In this way, multiple battery cells 20 can be fixed on the housing 10, facilitating the connection and assembly between other components and the battery cells 20.

[0133] In some embodiments, the fixing structure is a slot 17, and one end of the battery cell is inserted into the slot 17.

[0134] In this way, the slot 17 has a simple structure and is easy to process. At the same time, it is beneficial to reduce the assembly difficulty of the battery cells.

[0135] Please refer to Figure 6 and 7 , in some embodiments, the housing 10 includes multiple first connecting columns 15, and the bracket 50 includes multiple second connecting columns 53. When the housing 10 is connected to the bracket 50, the first connecting columns 15 are connected to the second connecting columns 53.

[0136] In this way, the first connecting columns 15 and the second connecting columns 53 are used for connecting the housing 10 and the bracket 50. Moreover, setting the first connecting columns 15 is beneficial to enhancing the structural strength of the housing 10, and setting the second connecting columns 53 is beneficial to enhancing the structural strength of the bracket 50.

[0137] Specifically, the first connecting columns 15 are arranged on the inner wall of the bottom case. Multiple first connecting columns 15 are arranged in a multi-row and multi-column array, and slots 17 are defined between adjacent two rows and two columns of the first connecting columns 15. The array arrangement of multiple first connecting columns 15 realizes the spaced arrangement of the slots 17.

[0138] Similarly, the second connecting columns 53 are arranged on the inner wall of the bracket 50. Multiple second connecting columns 53 are arranged in a multi-row and multi-column array, and fixing slots 51 are defined between adjacent two rows and two columns of the second connecting columns 53. The array arrangement of multiple second connecting columns 53 realizes the spaced placement of the fixing slots 51.

[0139] Furthermore, the first connecting columns 15 and the bottom case are of an integral structure formed by one-piece machining, and the second connecting columns 53 and the bracket 50 are of an integral structure formed by one-piece machining.

[0140] It can be understood that by forming spaced positioning slots and fixing slots 51 through multiple first connecting columns 15 and second connecting columns 53, it can ensure that multiple battery cells 20 are spaced apart, reduce problems such as thermal expansion caused by direct contact of multiple battery cells 20, and reduce the situation where multiple battery cells 20 are mutually extruded and deformed due to collision of the battery pack 100, thereby reducing the safety risk.

[0141] In some embodiments, a cylindrical positioning slot and a fixing slot 51 can be defined between adjacent two rows and two columns of the first connecting columns 15 and adjacent two rows and two columns of the second connecting columns 53 to ensure the stable placement of the cylindrical battery cells 20, thereby improving the stability of the cylindrical battery cells 20.

[0142] Specifically, the outer peripheral walls of each of the first connecting posts 15 and the second connecting posts 53 are each formed with an arcuate surface to enclose and form a cylindrical positioning groove and a fixing groove 51, so that the cylindrical slot matches the outer peripheral wall of the battery cell 20, thereby ensuring the connection effect between the battery cell 20 and the positioning portion and reducing the shaking phenomenon.

[0143] In other embodiments, the positioning groove and the fixing groove 51 may also be of other shapes, such as rectangular, etc., to ensure the stable placement of battery cells 20 of different shapes, and no specific limitation is made here.

[0144] In some embodiments, since the lengths of the first connecting posts 15 and the second connecting posts 53 are relatively long, to enhance their structural strength, the bottom case is further provided with first reinforcing ribs. The first reinforcing ribs are triangular or trapezoidal. One end of the first reinforcing rib is connected to the inner wall of the bottom case, and the other end of the first reinforcing rib is connected to the first connecting post 15. Similarly, the bracket 50 is further provided with second reinforcing ribs. The second reinforcing ribs are triangular or trapezoidal. One end of the second reinforcing rib is connected to the inner wall of the bracket 50, and the other end of the second reinforcing rib is connected to the second connecting post 53.

[0145] Furthermore, each of the first connecting posts 15 is connected with a plurality of first reinforcing ribs. Similarly, each of the second connecting posts 53 is connected with a plurality of second reinforcing ribs.

[0146] In some embodiments, the housing 10 includes a plurality of fasteners, and the plurality of fasteners are respectively fastened to connect the corresponding first connecting posts 15 and the second connecting posts 53 to connect the housing 10 to the bracket 50.

[0147] In this way, the detachable connection between the first connecting post 15 and the second connecting post 53 is realized by using the fasteners, which is beneficial to reducing the maintenance difficulty of the battery pack 100.

[0148] Specifically, in the embodiment of the present application, the first connecting posts 15 on the bottom case extend towards the top case along the height direction of the battery pack 100, and the second connecting posts 53 on the bracket 50 extend towards the bottom case along the height direction of the battery pack 100. The first connecting posts 15 and the second connecting posts 53 are both hollow inside and are provided with threaded holes at opposite ends. The inside of the second connecting post 53 is provided with fasteners that can be screwed into the threaded holes, and the detachable connection between the first connecting post 15 and the second connecting post 53 is realized through threaded connection.

[0149] In other embodiments, the fasteners that can be screwed into the threaded holes may also be arranged inside the first connecting posts 15.

[0150] In other embodiments, the first connecting posts 15 and the second connecting posts 53 may also be detachably connected by means of snaps, pins, etc.

[0151] In some embodiments, the inverter 200 is electrically connected to the control circuit board 30.

[0152] In this way, the control circuit board 30 can be used to control the inverter 200, which is beneficial to reducing the operation difficulty.

[0153] Specifically, in the embodiment of the present application, the inverter 200 and the control circuit board 30 can be electrically connected through wires, wire bridges, etc. In other embodiments, a control component can also be additionally provided and electrically connected to the inverter 200, and the control component is used to control the inverter 200.

[0154] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0155] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the said features. In the description of the present application, "a plurality of" means at least two, such as two, three, unless otherwise specifically and clearly defined.

[0156] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A shell, wherein a plurality of first through holes are formed on an inner wall of the shell; A plurality of battery cells, one end of each of the plurality of battery cells being fixed at a position corresponding to the first through hole, and electrodes of the battery cells being connected to the outside of the housing through the first through hole; An electrical connector, wherein the electrical connector is disposed outside the housing, and the first through hole provides a connection channel so that the electrical connector is electrically connected to the electrode of the battery cell; A control circuit board, wherein the control circuit board is arranged in the housing; A collection component is arranged outside the shell and is electrically connected to the electrical connector. A second through hole is also provided on the shell. The collection component is electrically connected to the control circuit board through the second through hole.

2. The battery pack according to claim 1, characterized in that: The first through hole is arranged at the bottom of the housing.

3. The battery pack according to claim 2, characterized in that: An accommodating groove is arranged on the outer side of the bottom of the shell body, and the collecting component is at least partially arranged in the accommodating groove.

4. The battery pack according to claim 3, characterized in that: The housing further comprises a cover plate, which is arranged on the housing and covers the receiving groove.

5. The battery pack according to claim 1, characterized in that: The battery pack further comprises a bracket, a fixing groove is provided on the bracket, an end of the battery cell away from the first through hole is fixed in the fixing groove, and the bracket is fixed to the shell, thereby fixing the battery cell in the shell.

6. The battery pack according to claim 1, characterized in that: The housing is provided with a third through hole, and the electrical connector passes through the third through hole to be electrically connected to the control circuit board.

7. The battery pack according to claim 1, characterized in that: The acquisition component includes an acquisition circuit board, and the acquisition circuit board includes a main body and a connecting part. The main body is arranged outside the shell, and the connecting part is connected to the main body and connected to the control circuit board through the second through hole.

8. The battery pack according to claim 7, characterized in that: The connecting portion includes a first connector, the first connector is inserted into the second through hole, the control circuit board includes a second connector, and the connecting portion and the control circuit board are connected through the matching of the first connector and the second connector.

9. The battery pack according to claim 1, characterized in that: The acquisition component includes a cable, which passes through the second through hole, has one end connected to the electrical connector, and the other end connected to the control circuit board.

10. The battery pack according to claim 1, characterized in that: The acquisition component is configured to acquire the voltage and / or temperature of the battery cell, and the control circuit board is configured to control the charging or discharging of the battery cell according to the voltage and / or temperature.

11. The battery pack according to claim 1, characterized in that: The electrical connector is integrated with the collection component and is electrically connected to the control circuit board through the second through hole.

12. The battery pack according to claim 1, characterized in that: A fixing structure is disposed on the inner wall of the shell corresponding to the first through hole, one end of the battery cell is fixed to the fixing structure, and the first through hole is disposed at the bottom of the fixing structure.

13. The battery pack according to claim 12, characterized in that: The fixing structure is a slot, and one end of the battery core is inserted into the slot.

14. An energy storage power supply, characterized in that: It comprises a battery pack as described in any one of claims 1 to 10 and an inverter arranged in the shell.

15. The energy storage power supply according to claim 14, characterized in that: The inverter is electrically connected to the control circuit board.

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