Combined mobile power supply
By optimizing the modular design and heat dissipation channels, the problem of insufficient power bank capacity has been solved, enabling flexible expansion of the power supply and efficient heat dissipation, thereby improving the reliability and safety of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-03-06
AI Technical Summary
Existing portable power banks are prone to insufficient capacity during use and cannot be expanded or carried, resulting in inflexible use and low reliability.
The modular design combines the main power module with at least one auxiliary power module. The main assembly boss and the auxiliary assembly groove work together to achieve a fast and stable electrical connection. Heat dissipation slots are provided on the housing to optimize heat dissipation performance.
It enhances the flexibility and scalability of use, improves the reliability and maintainability of the product, ensures the safety and stability of electrical connections, optimizes heat dissipation efficiency, and reduces production costs.
Smart Images
Figure CN223978442U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile power technology, and in particular to a combined mobile power supply. Background Technology
[0002] A power bank, also known as a portable charger or power bank, is a portable charging device that integrates a high-capacity battery pack and intelligent control circuitry. It is specifically designed to meet the charging needs of various electronic devices when out and about or in environments where a fixed power source is unavailable.
[0003] From a technical perspective, portable power banks typically consist of the following key components: high-energy-density lithium-ion or lithium-polymer battery cells as energy storage units; an efficient power management system (BMS) to monitor battery status and protect the battery from overcharging, over-discharging, short circuits, and other abnormal conditions; and an intelligent charging and discharging control chip to ensure safe and stable power output to connected devices. In practical applications, portable power banks support charging various small electronic devices such as mobile phones, tablets, Bluetooth headsets, smartwatches, and digital cameras via USB or other standardized interfaces. Their compact size, light weight, and portability make them convenient charging solutions for users, whether on long trips, outdoor adventures, or daily commutes.
[0004] However, existing portable power banks are all standalone units, which are prone to insufficient capacity during use. This makes it impossible to expand or carry the power supply. Therefore, a new design is needed to address the existing portable power bank structure. Utility Model Content
[0005] To address the aforementioned issues, this utility model combines a main power module with at least one auxiliary power module, significantly enhancing its flexibility and scalability. Users can add or remove auxiliary power modules according to their actual needs, thereby adjusting the overall power capacity to meet power requirements in different scenarios. This modular design not only facilitates portability and storage but also reduces the impact of a single component failure on the entire system, improving the reliability and maintainability of this modular power bank.
[0006] The technical solution adopted by this utility model is as follows: a combined portable power supply, including a main power module and at least one auxiliary power module. The main power module includes a main battery cell, a main mounting bracket, a main control panel, and a main power housing. The main battery cell is mounted on the main mounting bracket, and the main control panel is mounted at one end of the main power housing. The main power housing has a main mounting cavity, and the main mounting bracket is mounted inside the main mounting cavity. The main battery cell is electrically connected to the main control panel. One end of the main power housing has a main assembly boss, and the other end has a main assembly groove. The main control panel is mounted at one end of the main assembly boss and has a main assembly socket. The bottom surface of the main assembly groove has a main assembly plug. The auxiliary power module... The power module includes a secondary battery cell, a secondary mounting bracket, a secondary control panel, and a secondary power supply housing. The secondary battery cell is mounted on the secondary mounting bracket, and the secondary control panel is located at one end of the secondary power supply housing. The secondary power supply housing has a secondary mounting cavity, and the secondary mounting bracket is located within the secondary mounting cavity. The secondary battery cell is electrically connected to the secondary control panel. One end of the secondary power supply housing has a secondary assembly boss, and the other end has a secondary assembly groove. The secondary control panel is located at one end of the secondary assembly boss and has a secondary assembly socket. The bottom surface of the secondary assembly groove has a secondary assembly plug. The secondary assembly boss is used to engage with the main assembly groove so that the secondary assembly socket connects to the main assembly plug, thereby enabling the secondary battery cell to supply power to the main control panel.
[0007] A further improvement to the above solution is that the main power supply housing is provided with a plurality of first heat dissipation slots, which extend along the length of the main power supply housing; the auxiliary power supply housing is provided with a plurality of second heat dissipation slots, which extend along the length of the auxiliary power supply housing; when the auxiliary assembly boss mates with the main assembly groove, the first heat dissipation slots and the second heat dissipation slots are interconnected.
[0008] A further improvement to the above solution is that the main power supply housing is integrally extruded from aluminum alloy, and the inner wall of the main mounting cavity is provided with a first heat transfer layer, which is formed on the inner wall of the main mounting cavity by spraying.
[0009] A further improvement to the above scheme is that a main graphite layer is attached to the first heat transfer layer, and one side of the main battery cell is attached to the main graphite layer; the main graphite layer is used to transfer heat to the first heat transfer layer, and the first heat transfer layer dissipates heat through the first heat dissipation channel.
[0010] A further improvement to the above solution is that the auxiliary power supply housing is integrally extruded from aluminum alloy, and a second heat transfer layer is provided on the inner wall of the auxiliary mounting cavity. The second heat transfer layer is formed on the inner wall of the auxiliary mounting cavity by spraying.
[0011] A further improvement to the above scheme is that a secondary graphite layer is attached to the second heat transfer layer, and one side of the secondary battery cell is attached to the secondary graphite layer; the secondary graphite layer is used to transfer heat to the second heat transfer layer, and the second heat transfer layer dissipates heat through the second heat dissipation channel.
[0012] A further improvement to the above scheme is that the main battery cell is covered with a main flexible heat transfer film, which is used to contact the main graphite layer to transfer the heat of the main battery cell to the main graphite layer.
[0013] The auxiliary battery cell is covered with an auxiliary flexible heat transfer film, which is used to contact the auxiliary graphite layer to transfer the heat of the auxiliary battery cell to the auxiliary graphite layer.
[0014] A further improvement to the above scheme is that both the main flexible heat transfer film and the secondary flexible heat transfer film are copper thin films, graphite thin films, or graphene thin films.
[0015] A further improvement to the above scheme is that the inner wall of the main placement cavity is provided with a plurality of first positioning ribs, and the two ends of the first positioning ribs are provided with first threaded holes. The main fixing bracket is connected to the first threaded holes by screws to fix the main fixing bracket in the main placement cavity; the inner wall of the secondary placement cavity is provided with a plurality of second positioning ribs, and the two ends of the second positioning ribs are provided with second threaded holes. The secondary fixing bracket is connected to the second threaded holes by screws to fix the secondary fixing bracket in the secondary placement cavity.
[0016] A further improvement to the above scheme is that the two ends of the main fixing bracket are provided with main heat insulation gaps, which are used to separate the two ends of the main battery cell from the main control panel and the main assembly groove, respectively, so as to facilitate heat dissipation at the two ends of the main battery cell; the two ends of the auxiliary fixing bracket are provided with auxiliary heat insulation gaps, which are used to separate the two ends of the auxiliary battery cell from the auxiliary control panel and the auxiliary assembly groove, respectively, so as to facilitate heat dissipation at the two ends of the auxiliary battery cell.
[0017] The beneficial effects of this utility model are:
[0018] Compared to existing portable power banks, this invention significantly enhances flexibility and scalability through a modular design—a combination of a main power module and at least one auxiliary power module. Users can add or remove auxiliary power modules according to their actual needs, thereby adjusting the overall power capacity to meet power requirements in different scenarios. This modular design not only facilitates portability and storage but also reduces the impact of a single component failure on the entire system, improving product reliability and maintainability.
[0019] Secondly, the combination mechanism between the main power module and the auxiliary power module is ingeniously designed. Through the cooperation of the main combination boss and the auxiliary combination groove, as well as the corresponding main combination plug and auxiliary combination socket, a fast and stable electrical connection is achieved. This design not only simplifies the operation process of power expansion, but also ensures electrical safety and stability during the connection process, effectively avoiding low power transmission efficiency or safety hazards caused by poor contact.
[0020] Inside the main power module, the main battery cell is securely mounted in the main mounting cavity via a main fixing bracket and is electrically connected to the main control panel, ensuring effective management and control of electrical energy. The main combination socket design on the main control panel not only facilitates the connection of the auxiliary power module but also reserves interfaces for future functional expansion (such as intelligent charging management and power display), enhancing the product's intelligence level.
[0021] The design of the auxiliary power module also embodies the principles of efficiency and convenience. The auxiliary battery cell is fixed in the auxiliary mounting cavity by an auxiliary mounting bracket and electrically connected to the auxiliary control panel, ensuring a stable power output. The combination of the auxiliary combination socket on the auxiliary control panel and the main combination plug enables seamless power transmission, allowing the auxiliary battery cell to directly power the main control panel and other potentially connected devices, extending the overall usage time.
[0022] Furthermore, the power bank's casing design prioritizes durability and safety. Both the main and auxiliary power bank casings are made of high-quality materials, effectively resisting bumps and wear during daily use and protecting internal components from damage. Simultaneously, the casing's insulation design ensures user safety during use, avoiding the risk of electric shock.
[0023] The heat dissipation channel runs along the length of the casing, which not only increases the heat dissipation area but also optimizes the heat dissipation path, effectively improving the power supply's heat dissipation efficiency. When the secondary assembly boss and the main assembly groove are precisely matched, the first and second heat dissipation channels are interconnected, forming a more unobstructed heat dissipation channel.
[0024] This design not only enhances the overall heat dissipation performance of the power bank but also ensures its stability and reliability under high load. The connectivity of the heat dissipation channels helps to quickly dissipate internally generated heat, avoiding performance degradation or safety hazards caused by overheating.
[0025] Furthermore, this technical solution also has certain advantages in manufacturing process. The design of the heat dissipation channel is relatively simple, and it can be directly extruded from aluminum alloy, reducing production costs. At the same time, since the heat dissipation channel is directly opened on the outer casing, no additional heat dissipation components are needed, which further simplifies the power supply structure and improves its compactness and portability. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the combined mobile power supply of this utility model;
[0027] Figure 2 for Figure 1 A structural schematic diagram of a modular power bank from another perspective;
[0028] Figure 3 for Figure 1 A schematic diagram of the main power module of a modular power bank;
[0029] Figure 4 for Figure 1 A schematic diagram of the auxiliary power module of a modular mobile power supply.
[0030] Figure 5 for Figure 1 A schematic diagram of the internal structure of a modular portable power bank.
[0031] Explanation of reference numerals in the attached drawings: Main power module 1, main battery cell 11, main flexible heat transfer film 111, main fixing bracket 12, main heat insulation gap 121, main control panel 13, main combination socket 131, main power housing 14, main combination boss 141, main combination groove 142, main combination plug 143, first heat dissipation channel 144, main mounting cavity 15, first heat transfer layer 151, main graphite layer 152, first positioning rib 153;
[0032] Auxiliary power supply module 2, auxiliary battery cell 21, auxiliary flexible heat transfer film 211, auxiliary fixing bracket 22, auxiliary heat insulation gap 221, auxiliary control panel 23, auxiliary combination socket 231, auxiliary power supply housing 24, auxiliary combination boss 241, auxiliary combination groove 242, auxiliary combination plug 243, second heat dissipation channel 244, auxiliary mounting cavity 25, second heat transfer layer 251, auxiliary graphite layer 252, second positioning rib 253. Detailed Implementation
[0033] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-5As shown, in one embodiment of this utility model, a combined mobile power supply is disclosed, including a main power module 1 and at least one auxiliary power module 2. The main power module 1 includes a main battery cell 11, a main mounting bracket 12, a main control panel 13, and a main power housing 14. The main battery cell 11 is mounted on the main mounting bracket 12, and the main control panel 13 is mounted at one end of the main power housing 14. The main power housing 14 has a main mounting cavity 15, and the main mounting bracket 12 is mounted inside the main mounting cavity 15. The main battery cell 11 is electrically connected to the main control panel 13. One end of the main power housing 14 has a main assembly boss 141, and the other end has a main assembly groove 142. The main control panel 13 is mounted at one end of the main assembly boss 141 and has a main assembly socket 131. The bottom surface of the main assembly groove 142 has a main assembly plug 143. The auxiliary power module 2 includes... The system includes a secondary battery cell 21, a secondary mounting bracket 22, a secondary control panel 23, and a secondary power supply housing 24. The secondary battery cell 21 is mounted on the secondary mounting bracket 22. The secondary control panel 23 is mounted at one end of the secondary power supply housing 24. The secondary power supply housing 24 has a secondary mounting cavity 25, and the secondary mounting bracket 22 is mounted inside the secondary mounting cavity 25. The secondary battery cell 21 is electrically connected to the secondary control panel 23. One end of the secondary power supply housing 24 has a secondary assembly boss 241, and the other end has a secondary assembly groove 242. The secondary control panel 23 is mounted at one end of the secondary assembly boss 241 and has a secondary assembly socket 231. The bottom surface of the secondary assembly groove 242 has a secondary assembly plug 243. The secondary assembly boss 241 is used to engage with the main assembly groove 142 so that the secondary assembly socket 231 connects with the main assembly plug 143, thereby enabling the secondary battery cell 21 to supply power to the main control panel 13. This embodiment, through its modular design—a combination of a main power module 1 and at least one auxiliary power module 2—significantly enhances the flexibility and scalability of use. Users can add or remove auxiliary power modules 2 according to actual needs, thereby adjusting the overall power capacity to meet power requirements in different scenarios. This modular design not only facilitates portability and storage but also reduces the impact of a single component failure on the entire system, improving product reliability and maintainability. Secondly, the combination mechanism between the main power module 1 and the auxiliary power module 2 is ingeniously designed. Through the cooperation of the main combination boss 141 and the auxiliary combination groove 242, as well as the corresponding main combination plug 143 and the auxiliary combination socket 231, a fast and stable electrical connection is achieved. This design not only simplifies the power expansion process but also ensures electrical safety and stability during the connection process, effectively avoiding low power transmission efficiency or safety hazards caused by poor contact. Inside the main power module 1, the main battery cell 11 is securely installed in the main mounting cavity 15 via the main fixing bracket 12 and is electrically connected to the main control panel 13, ensuring effective management and control of electrical energy.The main combination socket 131 on the main control panel 13 not only facilitates the connection of the auxiliary power module 2, but also reserves interfaces for future functional expansion (such as intelligent charging management, power display, etc.), enhancing the product's intelligence level. The design of the auxiliary power module 2 also embodies the principles of efficiency and convenience. The auxiliary battery cell 21 is fixed in the auxiliary mounting cavity 25 via the auxiliary fixing bracket 22 and electrically connected to the auxiliary control panel 23, ensuring stable power output. The combination of the auxiliary combination socket 231 on the auxiliary control panel 23 and the main combination plug 143 achieves seamless power transmission, allowing the auxiliary battery cell 21 to directly power the main control panel 13 and other potentially connected devices, extending the overall usage time. Furthermore, the power bank's casing design fully considers durability and safety. Both the main power casing 14 and the auxiliary power casing 24 are made of high-quality materials, effectively resisting bumps and wear during daily use and protecting internal components from damage. At the same time, the casing's insulation design ensures user safety during use, avoiding the risk of electric shock.
[0036] The main power supply casing 14 is provided with multiple first heat dissipation slots 144, which extend along the length of the main power supply casing 14. The secondary power supply casing 24 is provided with multiple second heat dissipation slots 244, which extend along the length of the secondary power supply casing 24. When the secondary assembly boss 241 mates with the main assembly groove 142, the first heat dissipation slots 144 and the second heat dissipation slots 244 are interconnected. In this embodiment, the heat dissipation slots extend along the length of the casing, which not only increases the heat dissipation area but also optimizes the heat dissipation path, effectively improving the heat dissipation efficiency of the power supply. When the secondary assembly boss 241 and the main assembly groove 142 are precisely matched, the first heat dissipation slots 144 and the second heat dissipation slots 244 are interconnected, forming a more unobstructed heat dissipation channel. This design not only enhances the overall heat dissipation performance of the power bank but also ensures the stability and reliability of the power supply under high load operation. The connectivity of the heat dissipation slots helps to quickly dissipate the heat generated inside, avoiding performance degradation or safety hazards caused by overheating. Furthermore, this technical solution also has certain advantages in manufacturing process. The design of the heat dissipation channel is relatively simple, and it can be directly extruded from aluminum alloy, reducing production costs. At the same time, since the heat dissipation channel is directly opened on the outer casing, no additional heat dissipation components are needed, which further simplifies the power supply structure and improves its compactness and portability.
[0037] The main power supply housing 14 is integrally extruded from aluminum alloy. A first heat transfer layer 151 is provided on the inner wall of the main mounting cavity 15, formed by spraying. A main graphite layer 152 is attached to the first heat transfer layer 151, and one side of the main battery cell 11 is attached to the main graphite layer 152. The main graphite layer 152 transfers heat to the first heat transfer layer 151, which dissipates heat through the first heat dissipation channel 144. Specifically, the auxiliary power supply housing 24 is integrally extruded from aluminum alloy. A second heat transfer layer 251 is provided on the inner wall of the auxiliary mounting cavity 25, formed by spraying. A secondary graphite layer 252 is attached to the second heat transfer layer 251, and one side of the secondary battery cell 21 is attached to the secondary graphite layer 252. The secondary graphite layer 252 is used to transfer heat to the second heat transfer layer 251, and the second heat transfer layer 251 dissipates heat through the second heat dissipation channel 244. In this embodiment, the main power supply shell 14 and the secondary power supply shell 24 are formed by integral extrusion of aluminum alloy, which not only ensures the structural strength and lightweight design of the power supply, but also provides an efficient path for heat transfer of the internal battery cell due to its excellent thermal conductivity. The choice of aluminum alloy material effectively reduces the accumulation of heat on the power supply shell, reducing the performance degradation or safety hazards caused by excessive temperature. Secondly, the first heat transfer layer 151 and the second heat transfer layer 251 formed on the inner walls of the main mounting cavity 15 and the secondary mounting cavity 25 by spraying further enhance the heat conduction efficiency. This spraying process not only ensures the uniform distribution of the heat transfer layer, but also forms a tight bond between it and the shell and the battery cell, thereby optimizing the heat transfer path and reducing heat loss. Furthermore, the introduction of the main graphite layer 152 and the secondary graphite layer 252, acting as a bridge for heat transfer, greatly improves the heat exchange efficiency between the battery cell and the heat transfer layer. The high thermal conductivity of graphite material allows the heat generated by the battery cell to be quickly absorbed and transferred to the heat transfer layer, and then rapidly dissipated to the external environment through the first heat dissipation channel 144 and the second heat dissipation channel 244.
[0038] The main battery cell 11 is externally covered with a main flexible heat transfer film 111, which is used to contact the main graphite layer 152 to transfer heat from the main battery cell 11 to the main graphite layer 152. Specifically, the auxiliary battery cell 21 is externally covered with an auxiliary flexible heat transfer film 211, which is used to contact the auxiliary graphite layer 252 to transfer heat from the auxiliary battery cell 21 to the auxiliary graphite layer 252. Both the main flexible heat transfer film 111 and the auxiliary flexible heat transfer film 211 are copper thin films, graphite thin films, or graphene thin films. In this embodiment, the main battery cell 11 and the auxiliary battery cell 21 achieve an efficient heat transfer mechanism through their respective externally covered main flexible heat transfer films 111 and auxiliary flexible heat transfer films 211. These flexible heat transfer films, whether copper thin films, graphite thin films, or graphene thin films, all have excellent thermal conductivity, can quickly respond to heat changes generated inside the battery cell, and effectively conduct heat to the corresponding graphite layer. Secondly, the graphite layer, acting as a heat receiver, possesses high heat capacity and excellent heat dissipation performance, enabling the power bank to maintain stable temperature control even under prolonged high-load operation. This not only extends the power bank's lifespan but also improves its safety and reliability, avoiding potential risks caused by overheating. Furthermore, the use of flexible heat transfer films enhances the structural flexibility and adaptability of the power bank. Flexible materials such as copper films, graphite films, and graphene films possess excellent flexibility and plasticity, adapting to changes in the shape of the battery cells and ensuring good contact and heat transfer even in complex operating environments. Finally, this structure also improves the overall thermal management efficiency of the power bank. By optimizing the heat transfer path and heat dissipation area, heat can be dissipated into the environment more quickly, thereby reducing the overall operating temperature of the power bank and improving its efficiency and performance.
[0039] The inner wall of the main mounting cavity 15 is provided with multiple first positioning ribs 153, each with a first threaded hole at both ends. The main fixing bracket 12 is connected to the first threaded hole by screws to fix the main fixing bracket 12 within the main mounting cavity 15. The inner wall of the secondary mounting cavity 25 is provided with multiple second positioning ribs 253, each with a second threaded hole at both ends. The secondary fixing bracket 22 is connected to the second threaded hole by screws to fix the secondary fixing bracket 22 within the secondary mounting cavity 25. In this embodiment, by providing multiple first positioning ribs 153 and second positioning ribs 253 on the inner walls of the main mounting cavity 15 and the secondary mounting cavity 25 respectively, precise positioning of the main fixing bracket 12 and the secondary fixing bracket 22 is achieved. These positioning ribs not only provide stable support but also ensure the accuracy of the bracket's position during installation, thereby avoiding structural loosening or functional failure due to improper installation. Secondly, the first positioning rib 153 and the second positioning rib 253 are respectively provided with a first threaded hole and a second threaded hole at both ends. This design allows the main fixing bracket 12 and the secondary fixing bracket 22 to be tightly connected to the threaded holes by screws. This connection method is not only simple to operate, but also has high connection strength, ensuring that the bracket remains stable during the use of the power bank and will not fall off or loosen due to external forces. In addition, the structure also has good maintainability and expandability. When it is necessary to maintain the power bank or replace parts, the bracket can be easily disassembled simply by unscrewing the screws, without complicated disassembly tools or steps.
[0040] The main fixing bracket 12 has main heat insulation gaps 121 at both ends, which separate the two ends of the main battery cell 11 from the main control panel 13 and the main assembly groove 142, respectively, for heat dissipation at the two ends of the main battery cell 11. The secondary fixing bracket 22 has secondary heat insulation gaps 221 at both ends, which separate the two ends of the secondary battery cell 21 from the secondary control panel 23 and the secondary assembly groove 242, respectively, for heat dissipation at the two ends of the secondary battery cell 21. In this embodiment, the main heat insulation gaps 121 effectively isolate the heat conduction path between the two ends of the main battery cell 11 and the main control panel 13 and the main assembly groove 142. This design not only reduces the potential impact of the heat generated during battery cell operation on the control panel, but also avoids performance degradation or safety hazards caused by heat accumulation, thereby ensuring the efficient and stable operation of the power bank. Secondly, the introduction of secondary heat insulation gaps 221 also serves to isolate heat transfer between the two ends of the secondary battery cell 21. This design creates a strong thermal barrier between the secondary battery cell 21, the secondary control panel 23, and the secondary assembly recess 242, further enhancing the overall heat dissipation performance of the power bank. Especially under high load conditions, this design significantly reduces the battery cell temperature and extends its lifespan. Furthermore, the ingenious layout of the main and secondary thermal insulation gaps 221 optimizes the internal spatial structure of the power bank. They not only provide the necessary heat dissipation space for the battery cells but also allow the power bank to maintain a compact appearance while achieving a rational layout and efficient heat dissipation of internal components. This contributes to improving the overall performance and user experience of the power bank.
[0041] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A combination mobile power source, characterized by: The application relates to a power supply module, which comprises a main power supply module and at least one auxiliary power supply module. The main power supply module comprises a main battery, a main fixing support, a main control panel and a main power supply shell, the main battery is arranged on the main fixing support, the main control panel is arranged at one end of the main power supply shell, the main power supply shell is provided with a main installation cavity, the main fixing support is arranged in the main installation cavity, and the main battery is electrically connected with the main control panel; one end of the main power supply shell is provided with a main combined boss, the other end is provided with a main combined recess, the main control panel is arranged at one end of the main combined boss, and the main control panel is provided with a main combined jack; the groove bottom surface of the main combined recess is provided with a main combined plug; The auxiliary power supply module comprises an auxiliary battery, an auxiliary fixing support, an auxiliary control panel and an auxiliary power supply shell, the auxiliary battery is arranged on the auxiliary fixing support, the auxiliary control panel is arranged at one end of the auxiliary power supply shell, the auxiliary power supply shell is provided with an auxiliary installation cavity, the auxiliary fixing support is arranged in the auxiliary installation cavity, and the auxiliary battery is electrically connected with the auxiliary control panel; one end of the auxiliary power supply shell is provided with an auxiliary combined boss, the other end is provided with an auxiliary combined recess, the auxiliary control panel is arranged at one end of the auxiliary combined boss, and the auxiliary control panel is provided with an auxiliary combined jack; the groove bottom surface of the auxiliary combined recess is provided with an auxiliary combined plug; the auxiliary combined boss is used for being matched on the main combined recess, so that the auxiliary combined jack is connected with the main combined plug, and then the auxiliary battery supplies power to the main control panel; The main power supply shell is provided with a plurality of first heat dissipation through grooves, the plurality of first heat dissipation through grooves penetrate along the length direction of the main power supply shell, the auxiliary power supply shell is provided with a plurality of second heat dissipation through grooves, and the plurality of second heat dissipation through grooves penetrate along the length direction of the auxiliary power supply shell; When the auxiliary combined boss is matched with the main combined recess, the first heat dissipation through grooves and the second heat dissipation through grooves are communicated with each other; The main battery is externally covered with a main flexible heat transfer film, the main flexible heat transfer film is used for contacting a main graphite layer, and the main flexible heat transfer film is used for transferring the heat of the main battery to the main graphite layer; The auxiliary battery is externally covered with an auxiliary flexible heat transfer film, the auxiliary flexible heat transfer film is used for contacting an auxiliary graphite layer, and the auxiliary flexible heat transfer film is used for transferring the heat of the auxiliary battery to the auxiliary graphite layer; 2. The combination mobile power source of claim 1, wherein: The main flexible heat transfer film and the auxiliary flexible heat transfer film are copper films, graphite films or graphene films. The main power supply shell is formed by integrally extruding an aluminum alloy, the inner wall of the main installation cavity is provided with a first heat transfer layer, and the first heat transfer layer is formed on the inner wall of the main installation cavity by spraying; 3. The combination power bank of claim 2, wherein: A main graphite layer is attached to the first heat transfer layer, and one side of the main battery is attached to the main graphite layer; the main graphite layer is used for transferring heat to the first heat transfer layer, and the first heat transfer layer dissipates heat through the first heat dissipation through grooves. The auxiliary power supply shell is formed by integrally extruding an aluminum alloy, the inner wall of the auxiliary installation cavity is provided with a second heat transfer layer, and the second heat transfer layer is formed on the inner wall of the auxiliary installation cavity by spraying; An auxiliary graphite layer is attached to the second heat transfer layer, and one side of the auxiliary battery is attached to the auxiliary graphite layer; the auxiliary graphite layer is used for transferring heat to the second heat transfer layer, and the second heat transfer layer dissipates heat through the second heat dissipation through grooves.
4. The combination power bank of claim 1, wherein: The inner wall of the main installation cavity is provided with a plurality of first positioning ribs, two ends of the first positioning ribs are provided with first threaded holes, and the main fixing support is connected with the first threaded holes through screws to fix the main fixing support in the main installation cavity.
5. The combination power bank of claim 4, wherein: The inner wall of the auxiliary installation cavity is provided with a plurality of second positioning ribs, two ends of the second positioning ribs are provided with second threaded holes, and the auxiliary fixing support is connected with the second threaded holes through screws to fix the auxiliary fixing support in the auxiliary installation cavity.
6. The combination power bank of claim 1, wherein: Two ends of the main fixing support are provided with main heat insulation gaps, the main heat insulation gaps are used for separating two ends of the main battery from the main control panel and the main combined groove respectively, and heat dissipation of the two ends of the main battery is used.
7. The combination power bank of claim 6, wherein: Two ends of the auxiliary fixing support are provided with auxiliary heat insulation gaps, the auxiliary heat insulation gaps are used for separating two ends of the auxiliary battery from the auxiliary control panel and the auxiliary combined groove respectively, and heat dissipation of the two ends of the auxiliary battery is used.