Combined battery module

Abstract

The utility model provides a combined battery module. The combined battery module comprises a battery unit, a battery bracket, a shell and a heat dissipation assembly, a plurality of accommodating grooves for accommodating the battery units are formed in the battery bracket, and the battery units are arranged in different accommodating grooves and are detachably connected with the battery bracket; the battery support is sleeved with the shell, a circuit mainboard is arranged on the shell, the internal space of the shell is divided into two spaces by the circuit mainboard, a plurality of electric connectors used for being electrically connected with the battery units are arranged on one face of the circuit mainboard, and the battery support and the battery units are both located in the space facing the face, provided with the electric connectors, of the circuit mainboard; the heat dissipation assembly is located in the space where the face, away from the electric connector, of the circuit mainboard faces. The combined battery module disclosed by the utility model has relatively good flexibility and expandability, realizes relative stability of the position relationship among the battery units, is convenient for centralized management of the battery units, and enhances the heat dissipation performance through reasonable spatial layout.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a combined battery module. Background Art

[0002] A combined battery refers to a battery that combines multiple single cells into a whole in a specific way to provide the required voltage and capacity.

[0003] In the prior art, the connection relationship between the single cells in the combined battery is relatively unstable, which can easily cause the relative position of the batteries to change. When the number of batteries is large, it is not easy to centrally manage all the single cells, which affects the normal use of the batteries. A considerable number of combined batteries use radiators for heat dissipation, and the radiators often use fans, and the spatial layout is unreasonable, which can easily cause electromagnetic interference between the batteries and the radiators, thereby affecting the normal operation of the batteries. In addition, some combined batteries are not easy to adjust the size and voltage of the combined batteries according to demand, and the performance that can be freely expanded is limited. When one of the batteries fails, it is not easy to replace it, which also increases the cost of use.

[0004] Therefore, there is a need for a solution to solve at least one of the above problems. Utility Model Content

[0005] In view of at least one of the defects in the prior art, the present application proposes a combined battery module.

[0006] The technical solution adopted by the present application to solve at least one of the above technical problems is:

[0007] A combined battery module comprises: a battery unit, a battery bracket, a housing and a heat dissipation component;

[0008] The battery holder is formed with a plurality of receiving slots for receiving the battery units, and each of the battery units is arranged in a different receiving slot and is detachably connected to the battery holder;

[0009] The shell is sleeved on the battery holder, and a circuit main board is arranged on the shell. The circuit main board divides the internal space of the shell into two spaces. A plurality of electrical connectors for electrically connecting the battery cells are arranged on one surface of the circuit main board. The battery holder and the battery cells are both located in the space toward which the side of the circuit main board with the electrical connectors is directed; the heat dissipation assembly is located in the space toward which the side of the circuit main board facing away from the electrical connector is directed.

[0010] Furthermore, the battery holder is provided with a protruding structure in one of the areas where the receiving grooves are located and the battery unit, and the other of the areas is provided with a concave structure corresponding to the protruding structure.

[0011] Furthermore, the cross-sectional shapes of the protruding structure and the concave structure include a trapezoid, and the protruding structure gradually expands in a direction away from the battery unit.

[0012] Furthermore, a plurality of heat-conducting structures are distributed circumferentially of the battery holder, one end of the heat-conducting structure is attached to the battery holder, and the other end of the heat-conducting structure is attached to the shell.

[0013] Furthermore, the heat dissipation assembly includes a radiator, a first fan and a second fan, and the first fan and the second fan are respectively arranged at two ends of the radiator in a length direction to form convection from the first fan to the second fan.

[0014] Furthermore, the side wall of each of the accommodating grooves is also provided with an installation groove, and the installation groove is used to install a thermal sensor. Each of the thermal sensors is also respectively connected to the circuit main board for communication to detect the thermal condition of each of the batteries.

[0015] Furthermore, a shock-absorbing buffer layer is provided between the battery bracket and the shell.

[0016] Furthermore, the housing comprises an upper shell and a lower shell, and the upper shell and the lower shell are provided with engaging grooves for engaging the circuit mainboard.

[0017] Furthermore, one of the upper shell and the lower shell is provided with a strip-shaped protrusion, and the other of the upper shell and the lower shell is provided with a strip-shaped groove;

[0018] The combined connection between the two combined battery modules is achieved through the strip-shaped protrusions and the strip-shaped grooves.

[0019] Furthermore, the housing is also provided with a power line electrically connected to the circuit main board for connecting to an external power source or other combined battery modules.

[0020] Beneficial effects:

[0021] The present application provides a combined battery module with good flexibility and scalability, which achieves a relative stability in the positional relationship between each battery cell, facilitates the centralized management of each battery cell, and enhances the heat dissipation performance through reasonable spatial layout; specifically, a battery holder is provided, and each battery cell is arranged in a different accommodating slot, thereby achieving a relative stability in the positional relationship between each battery cell; the internal space of the shell is divided by cleverly utilizing the circuit mainboard, so that the battery cells and the heat dissipation components are respectively located in different spaces, thereby achieving a good heat dissipation effect while avoiding battery interference between the battery cells and the heat dissipation components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is an exploded view of the battery module structure of this embodiment;

[0024] Figure 2 This is a diagram showing the relationship between the battery holder and the housing position of this embodiment;

[0025] Figure 3 The battery module of this embodiment is three-dimensional Figure 1 ;

[0026] Figure 4 This is a diagram showing the composition of the heat dissipation assembly of this embodiment;

[0027] Figure 5 The battery module of this embodiment is three-dimensional Figure 2 ;

[0028] Figure 6 This is an enlarged view of the details of the battery bracket of this embodiment;

[0029] Figure 7 It is a three-dimensional diagram of the battery unit of this embodiment.

[0030] Reference numerals:

[0031] 1-battery unit; 11-protrusion structure; 2-battery holder; 21-accommodating groove; 211-installing groove; 212-thermal sensor; 22-recessed structure; 3-housing; 31-circuit board; 311-electrical connector; 32-upper shell; 33-lower shell; 34-engaging groove; 35-strip-shaped protrusion; 36-strip-shaped groove; 4-shock-absorbing buffer layer; 5-thermal conductive structure; 6-heat dissipation assembly; 61-first fan; 62-second fan; 63-radiator; 7-power cord. DETAILED DESCRIPTION

[0032] In the following, various embodiments of the present disclosure will be described more fully. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but rather the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0033] Hereinafter, the terms "include" or "may include" used in various embodiments of the present disclosure indicate the presence of disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present disclosure, the terms "include", "have", and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components, or a combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0034] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0035] The expressions (such as "first", "second", etc.) used in the various embodiments of the present disclosure may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0036] It should be noted that if it is described that one component element is “connected” to another component element, the first component element may be directly connected to the second component element, and a third component element may be “connected” between the first component element and the second component element. Conversely, when one component element is “directly connected” to another component element, it can be understood that there is no third component element between the first component element and the second component element.

[0037] The term “user” used in various embodiments of the present disclosure may indicate a person using an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.

[0038] The terms used in the various embodiments of the present disclosure are only used for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the present disclosure. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the meanings commonly understood by ordinary technicians in the field to which the various embodiments of the present disclosure belong. The terms (such as the terms defined in the generally used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the present disclosure.

[0039] Example

[0040] The present application embodiment provides a combined battery module, such as Figures 1 to 7 As shown, it includes: a battery unit 1, a battery bracket 2, a shell 3 and a heat dissipation component 6;

[0041] The battery holder 2 is formed with a plurality of receiving slots 21 for receiving the battery cells 1. Each battery cell 1 is disposed in a different receiving slot 21 and is detachably connected to the battery holder 2.

[0042] The shell 3 is sleeved on the battery holder 2. A circuit main board 31 is arranged on the shell 3. The circuit main board 31 divides the internal space of the shell 3 into two spaces. A plurality of electrical connectors 311 for electrically connecting the battery unit 1 are arranged on one surface of the circuit main board 31. The battery holder 2 and the battery unit 1 are both located in the space toward which the side of the circuit main board 31 with the electrical connector 311 faces; the heat dissipation component 6 is located in the space toward which the side of the circuit main board 31 away from the electrical connector 311 faces.

[0043] The circuit main board 31 is cleverly used to divide the internal space of the shell 3, so that the battery unit 1 and the heat dissipation component 6 are located in different spaces respectively, optimizing the overall internal space layout, thereby realizing the spatial separation of the battery unit 1 and the heat dissipation component 6, which can not only give full play to the heat dissipation effect of the heat dissipation component 6 on the battery unit 1, but also avoid electromagnetic interference between each other, and does not affect the normal heat dissipation of the battery unit 1.

[0044] The design of the battery holder 2 can also effectively place and organize the battery cells 1, maximize the use of available space, optimize the distribution of the overall battery cells 1, make them more compact and efficient, and help achieve effective heat dissipation of each battery cell 1 through reasonable spatial layout.

[0045] A circuit main board 31 and multiple electrical connectors 311 are provided on the shell 3. Each electrical connector 311 corresponds to the battery cell 1 in the accommodating slot 21, so that after each battery cell 1 is installed in the accommodating slot 21, it can be directly connected to the electrical connector 311 and connected to the circuit main board 31 through the electrical connector 311, thereby achieving a simple and reliable electrical connection. At the same time, the battery cells 1 installed on the battery holder 2 can also be centrally managed.

[0046] Furthermore, the battery holder 2 is provided with a protruding structure 11 in the area corresponding to each receiving groove 21 and one of the battery units 1, and the other of the two is provided with a recessed structure 22 corresponding to the protruding structure 11; and the detachable connection between each battery unit 1 and the battery holder 2 is achieved by engaging the protruding structure 11 with the recessed structure 22;

[0047] Optionally, the side wall of the accommodating groove 21 of the battery holder 2 may be provided with a groove structure, and the side wall of the battery unit 1 may be correspondingly provided with a protruding structure 11; the side wall of the accommodating groove 21 of the battery holder 2 may also be provided with a protruding structure 11, and the side wall of the battery unit 1 may also be correspondingly provided with a recessed structure 22; of course, there is no restriction on the specific setting position of the protruding structure 11 and the recessed structure 22, and it is only necessary to realize the specific connection requirements of the protruding structure 11 and the recessed structure 22.

[0048] It can be understood that the above structural design, through the design of the protruding structure 11 and the recessed structure 22, realizes a stable and reliable detachable connection between the battery unit 1 and the battery bracket 2, so that each battery unit 1 is firmly fixed on the bracket, thereby realizing the relative stability of each battery unit 1, and it is not easy to shift the position, which can avoid the failure caused by the shift of the battery unit 1 to a certain extent, and further improve the safety performance of the battery module;

[0049] The design of the raised structure 11 and the recessed structure 22 can also be easily disassembled and replaced, thereby improving the overall maintainability and expandability; users can flexibly increase or decrease the number of connections of the battery cells 1 according to specific needs and application scenarios, thereby adjusting the battery capacity and power output of the module.

[0050] Furthermore, if Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the cross-sectional shapes of the protruding structure 11 and the recessed structure 22 include a trapezoid, and the protruding structure 11 gradually expands in a direction away from the battery cell 1 .

[0051] The trapezoidal cross-sectional shape of the raised structure 11 and the recessed structure 22 can provide a more precise alignment and positioning function. When each battery cell 1 and the battery holder 2 need to be connected, the raised structure 11 and the recessed structure 22 can align the two in the correct position, thereby simplifying the assembly process and improving the accuracy of the assembly.

[0052] The raised structure 11 gradually expands in the direction away from the battery cell 1, and the recessed structure 22 correspondingly gradually narrows in the direction away from the battery holder 2. This shape design can not only provide good mechanical support, but also enhance the stability of the connection. The raised structure 11 and the recessed structure 22 can also provide a function similar to self-locking, so that the battery cell 1 is not easy to move relative to the battery holder 2 in the horizontal direction, further improving the stability of the connection.

[0053] Furthermore, if Figure 2 As shown, a plurality of heat-conducting structures 5 are distributed circumferentially of the battery holder 2 , one end of the heat-conducting structure 5 is attached to the battery holder 2 , and the other end of the heat-conducting structure 5 is attached to the shell 3 .

[0054] It can be understood that multiple heat-conducting structures 5 are distributed along the circumference of the battery holder 2, which can effectively conduct the heat generated by the battery unit 1 arranged on the battery holder 2 to the shell 3, and exchange heat with the environment through the shell 3, thereby improving the heat dissipation efficiency of the battery module; it can avoid safety problems caused by overheating to a certain extent; through the heat-conducting structure 5, heat can be distributed more evenly and promoted to be quickly dissipated, reducing the formation of hot spots, thereby improving the safety and stability of the battery.

[0055] The heat-conducting structure 5 generally not only has heat-conducting properties, but can also enhance the structural stability of the battery holder 2 to a certain extent. Through the heat-conducting structure 5, additional support can be provided between the battery holder 2 and the shell 3, thereby improving the firmness and stability of the overall assembly.

[0056] Optionally, the heat-conducting structure 5 may be made of an aluminum alloy material with high thermal conductivity and light weight, or a copper material with good thermal conductivity, or a thermally conductive plastic and / or composite material.

[0057] Of course, there is no limitation on the specific material of the heat conducting structure 5 .

[0058] Specifically, in some embodiments of the present application, the heat-conducting structure 5 uses insulating heat-conducting rubber to further improve the safety of the battery module.

[0059] Furthermore, if Figure 1 and Figure 4 As shown, the heat dissipation component 6 is disposed between the housing 3 and the circuit main board, and is connected to the heat conducting structure 5 and / or the circuit main board 31 .

[0060] Conducting heat from the thermally conductive structure 5 or the circuit main board 31 to the heat dissipation component 6 can effectively accelerate heat dissipation, improve heat dissipation efficiency, and thus help prevent local overheating of the battery module and improve heat dissipation performance. An effective heat dissipation design can keep the circuit main board 31 and the battery operating within a safe operating temperature range, prevent performance degradation or failure due to overheating, and thus improve overall reliability and stability.

[0061] Furthermore, the heat dissipation assembly 6 includes a heat sink 63 , a first fan 61 and a second fan 62 . The first fan 61 and the second fan 62 are respectively disposed at two ends of the heat sink 63 in the length direction to form convection from the first fan 61 to the second fan 62 .

[0062] By distributing the first fan 61 and the second fan 62 at both ends of the radiator 63, the flow of air on the entire surface of the radiator 63 can be promoted, forming a convection design, effectively increasing the contact area between the air and the surface of the radiator 63, and increasing the air flow rate, which helps the heat exchange between the radiator 63 and the air, thereby improving the heat dissipation efficiency.

[0063] Furthermore, if Figure 6 As shown, the side wall of each receiving groove 21 is also provided with an installation groove 211, and the installation groove 211 is used to install the thermal sensor 212. Each thermal sensor 212 is also respectively connected to the circuit main board 31 for detecting the thermal condition of each battery.

[0064] By communicating with the circuit main board 31 through the thermal sensor 212, the thermal condition of each battery can be monitored in real time, which helps to detect abnormal conditions in time, such as overheating or temperature fluctuations, so as to take corresponding measures to avoid damage or safety hazards; the thermal sensor 212 can also provide data support, so that the circuit main board 31 can intelligently adjust the speed and power of the cooling fan to quickly and effectively discharge heat according to actual needs and keep the equipment within a suitable operating temperature range; the thermal sensor 212 can also monitor the thermal condition of each battery in time, which can prevent battery aging, performance degradation and even damage caused by overheating, which is beneficial to extend the service life of the battery and reduce losses caused by failures.

[0065] Furthermore, if Figure 5 As shown, a shock-absorbing buffer layer 4 is further provided between the battery holder 2 and the housing 3 .

[0066] The shock-absorbing buffer layer 4 can effectively absorb and reduce vibration and impact forces from the external environment, thereby protecting internal components such as the battery cell 1 and the circuit main board 31 installed on the battery holder 2, and helping to extend the service life of the battery module and enhance the stability.

[0067] Optionally, the shock-absorbing buffer layer 4 can be made of rubber and silicone materials with good shock-absorbing properties and durability, or of a lightweight polyethylene foam material with certain shock-absorbing capabilities, or of an elastic polymer material with higher tensile strength and wear resistance; of course, there is no limitation on the specific material of the shock-absorbing buffer layer 4.

[0068] Specifically, in some embodiments of the present application, the shock-absorbing buffer layer 4 is made of rubber or silicone material.

[0069] Furthermore, if Figure 1 and Figure 2 As shown, the housing 3 includes an upper shell 32 and a lower shell 33 , and the upper shell 32 and the lower shell 33 are provided with engaging grooves 34 for engaging the circuit mainboard 31 .

[0070] The design of the snap-fit ​​groove 34 can realize the effective connection between the circuit main board 31 and the shell 3, improve the connection stability between the circuit main board 31 and the shell 3, and can avoid the loosening of the circuit main board 31 and the shell 3 to a certain extent, thereby also improving the connection stability between the electrical connector 311 on the circuit main board 31 and each battery cell 1, and further helping to improve the operating stability of the battery module.

[0071] Furthermore, if Figure 3 As shown, one of the upper shell 32 and the lower shell 33 is provided with a strip-shaped protrusion 35, and the other of the two is provided with a strip-shaped groove 36;

[0072] The combined connection between the two combined battery modules is achieved through the strip-shaped protrusions 35 and the strip-shaped grooves 36 .

[0073] The design of the strip-shaped protrusions 35 and the strip-shaped grooves 36 helps to ensure a firm connection between the battery modules to a certain extent, and can prevent the battery modules from loosening or separating due to vibration or movement during use, thereby improving the overall stability and reliability of the combined battery module; through the combination of the strip-shaped protrusions 35 and the strip-shaped grooves 36, the assembly process of the battery module can also be simplified, and the assembly can be completed by simply aligning the protrusions and the grooves and inserting them, thereby improving the assembly efficiency and enhancing the scalability of the battery module.

[0074] Furthermore, if Figure 5 As shown, the housing 3 is also provided with a power line 7 electrically connected to the circuit main board 31 for connecting to an external power source or other combined battery modules.

[0075] Through the power cord 7, the battery module can be connected to an external power source or other combined battery modules, thereby achieving flexible power supply configuration, allowing the user to select different power options according to needs, such as replacing the battery pack or directly connecting an external power adapter; connecting an external power adapter through the power cord 7 can simplify the power management of the device. In a fixed installation scenario, the power adapter can be used directly for power supply, avoiding the inconvenience caused by frequent battery replacement.

[0076] The embodiments of the present application have at least the following beneficial effects:

[0077] The embodiment of the present application provides a combined battery module with good flexibility and scalability, which achieves a relative stability in the positional relationship between each battery cell 1, facilitates the centralized management of each battery cell 1, and enhances the heat dissipation performance through reasonable spatial layout; specifically, through the design of the accommodating slot 21 and the convex and concave structure, the battery cell 1 can be easily plugged in and replaced, thereby achieving modular assembly and maintenance; each electrical connector 311 corresponds to the battery cell 1 in the accommodating slot 21, thereby achieving electrical connection between the battery cells 1, facilitates the centralized management of the battery cells 1, and is provided with a battery bracket 2, wherein each battery cell 1 is arranged in a different accommodating slot 21, thereby achieving a relative stability in the positional relationship between each battery cell 1, and cleverly utilizing the circuit main board 31 to separate the internal space of the shell 3, so that the battery cell 1 and the heat dissipation assembly 6 are respectively located in different spaces, thereby achieving a good heat dissipation effect while avoiding battery interference between the battery cell 1 and the heat dissipation assembly 6.

[0078] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present application.

[0079] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0080] The above application serial numbers are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0081] The above disclosure only discloses several specific implementation scenarios of the present application. However, the present application is not limited thereto, and any changes that can be conceived by technicians in this field should fall within the scope of protection of the present application.

Claims

1. A combined battery module, characterized in that: include: Battery cells, battery holders, housings, and heat dissipation components; The battery holder is formed with a plurality of receiving slots for receiving the battery units, and each of the battery units is arranged in a different receiving slot and is detachably connected to the battery holder; The shell is sleeved on the battery holder, and a circuit main board is arranged on the shell. The circuit main board divides the internal space of the shell into two spaces. A plurality of electrical connectors for electrically connecting the battery cells are arranged on one surface of the circuit main board. The battery holder and the battery cells are both located in the space toward which the side of the circuit main board with the electrical connectors is directed; the heat dissipation assembly is located in the space toward which the side of the circuit main board facing away from the electrical connector is directed.

2. A combined battery module according to claim 1, characterized in that: One of the battery holder and the battery unit is provided with a protruding structure corresponding to the area where each receiving groove is located, and the other of the battery holder and the battery unit is provided with a concave structure corresponding to the protruding structure.

3. A combined battery module according to claim 2, characterized in that: The cross-sectional shapes of the protruding structure and the concave structure include a trapezoid, and the protruding structure gradually expands in a direction away from the battery unit.

4. A combined battery module according to claim 1, characterized in that: A plurality of heat-conducting structures are distributed around the battery holder, one end of each heat-conducting structure is attached to the battery holder, and the other end of each heat-conducting structure is attached to the shell.

5. The combined battery module according to claim 1, characterized in that: The heat dissipation assembly includes a heat sink, a first fan and a second fan. The first fan and the second fan are respectively arranged at two ends of the heat sink in a length direction to form convection from the first fan to the second fan.

6. A combined battery module according to claim 1, characterized in that: The side wall of each of the accommodating grooves is also provided with an installation groove, and the installation groove is used to install a thermal sensor. Each of the thermal sensors is also respectively connected to the circuit main board for communication to detect the thermal condition of each of the batteries.

7. The combined battery module according to claim 1, characterized in that: A shock-absorbing buffer layer is also provided between the battery bracket and the shell.

8. The combined battery module according to claim 1, characterized in that: The housing comprises an upper shell and a lower shell, and the upper shell and the lower shell are provided with engaging grooves for engaging the circuit mainboard.

9. A combined battery module according to claim 8, characterized in that: One of the upper shell and the lower shell is provided with a strip-shaped protrusion, and the other of the upper shell and the lower shell is provided with a strip-shaped groove; The combined connection between the two combined battery modules is achieved through the strip-shaped protrusions and the strip-shaped grooves.

10. The combined battery module according to claim 1, characterized in that: The shell is also provided with a power line electrically connected to the circuit main board for connecting to an external power source or other combined battery modules.

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