A combined mobile power supply

Abstract

The utility model relates to a combined portable power source belongs to portable power source technical field, specifically includes battery module and control module, and control module and battery module between through the connection buckle carries out detachable assembly combination connection. The utility model discloses control module and battery module between adopt split type design, can split with the control module of IC and battery module, and store alone, can avoid the IC on the circuit board and produce self -consumption electricity, compared with traditional portable power source, in the same placement time, can maximum limit keep the residual electric quantity in the battery, can effectively avoid portable power source in short time self -dominating overdischarge damage, the independent storage of control module, cut off the power completely, can effectively prolong the service life of circuit board, maximum limit avoids the safety accident of the short circuit of the battery fire caused by the aging of circuit board.

Description

Technical Field

[0001] This utility model relates to the field of mobile power technology, specifically to a combined mobile power supply. Background Technology

[0002] In commercially available power bank designs, the battery and circuit board are welded together into a fixed structure. When these products are not used for a long time, the IC on the circuit board will generate self-discharge due to the welding method between the circuit board and the battery. Prolonged self-discharge will cause the battery's discharge rate to far exceed the natural discharge rate, resulting in over-discharge of the battery in a short period of time. This will prevent the power bank's charge from being maintained within a reasonable range, easily causing the battery to bulge or "die," seriously affecting the lifespan of the power bank. Moreover, the long-term self-discharge of the IC on the circuit board also has a significant impact on the IC's lifespan and is prone to short circuit failures that can cause the battery to catch fire.

[0003] To address this, we propose a modular mobile power supply. Utility Model Content

[0004] This invention provides a combined portable power bank to solve the problems mentioned in the background section.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] This utility model discloses a combined portable power bank, specifically including a battery module for storing electricity and a control module for controlling the charging and discharging of the battery module. The control module and the battery module are detachably assembled and combined via a connecting buckle. During idle periods, the control module and the battery module can be separated and stored separately, which avoids the IC on the circuit board from consuming power due to long-term connection with the battery module, and avoids excessive discharge of the battery module in a short period of time. Compared with traditional portable power banks, it can maximize the preservation of the remaining power in the battery during the same placement time. Moreover, the independent storage of the control module completely cuts off the power supply, which can effectively extend the service life of the circuit board and minimize the safety accidents caused by short circuits due to circuit board aging that could lead to battery fires.

[0007] Furthermore, the battery module includes a battery protective shell and a lithium battery pack installed inside the battery protective shell. A set of positioning slots is provided on each side of the top of the battery protective shell. There are two connecting buckles, which are respectively hinged to the sides of the positioning slots on the top of the battery module via a pivot.

[0008] Furthermore, the control module includes a bottom cover and a top cover, and an integrated control circuit module with an IC fixed between the bottom cover and the top cover; the bottom cover has integrally formed connecting slots on both sides for cooperating with the connecting buckle, wherein the integrated control circuit module adopts a conventional mobile power bank dedicated control circuit.

[0009] Furthermore, the lithium battery pack has a terminal plate at its end, with positive and negative terminals respectively located at the positions of the positioning slots at both ends of the terminal plate. The terminal plate is an insulating plate, mainly used for positioning and supporting the positive and negative terminals, facilitating the assembly of the control module and the battery module. The edge of the integrated control circuit module is welded with electrical contacts for cooperating with the positive and negative terminals at the top of the battery module. Contact ports are opened in the middle of the two positioning slots at the positions of the positive and negative terminals at both ends of the terminal plate, so that the positive and negative terminals at both ends of the terminal plate are exposed to the outside through the contact ports, so that the electrical contacts of the integrated control circuit can connect with the positive and negative terminals on the terminal plate.

[0010] Furthermore, the two connecting buckles have a groove-shaped side edge design, and positioning buckles are provided on both sides of the positioning slot. Under normal conditions, the connecting buckles are engaged with the positioning buckles in the positioning slot through the groove-shaped side edge design, thereby protecting the electrical contacts inside the contact port.

[0011] Furthermore, the bottom cover and the top cover are fastened together to form a complete outer shell structure to protect the internal integrated control circuit module. In order to position the electrical contacts welded on the integrated control circuit module so that the electrical contacts can remain in the predetermined position for a long time to facilitate contact and connection with the positive and negative terminals on the battery module, positioning grooves for positioning and fixing the electrical contacts are integrally formed at opposite positions on the bottom of the bottom cover and the top cover.

[0012] Furthermore, to facilitate the detachable assembly connection between the control module and the battery module via a connecting buckle, the inner sides of the connecting slots on both sides of the bottom cover are integrally formed with guide strips for sliding engagement with the side edges of the connecting buckle. A fixing buckle is integrally formed in the middle and near the top of the connecting slot on one side of the bottom cover, while a slot is provided on the connecting slot on the other side of the bottom cover, and an unlocking component is installed inside the slot. Utilizing the design of the guide strips and the groove-like structure of the connecting buckle's edge, the connecting buckle can only slide up and down within the corresponding connecting slot, so as to lock and unlock the connecting buckle using the fixing buckle and the unlocking component, thereby completing the detachable assembly between the control module and the battery module.

[0013] Furthermore, to facilitate consumer use of the power bank, a switch button cap is installed on the side edge of the bottom cover at the position of the on / off switch on the integrated control circuit module via a spring-loaded bracket. The spring-loaded bracket is fixedly clipped into a pre-set groove on the inner side of the bottom cover. At the same time, a power connection hole is also provided on the side edge of the bottom cover at the position of the charging port integrated on the integrated control circuit module.

[0014] Furthermore, to facilitate the assembly and combination of the control module and the battery module, the maximum rotation angle of the connecting buckle around the pivot is 90 degrees, and both connecting buckles are made of rigid insulating plastic. The user only needs to rotate the two connecting buckles to the maximum angle so that the connecting buckles are aligned with the two sides of the battery protective shell. At this time, the control module only needs to be inserted from top to bottom along the length of the battery protective shell so that the two connecting buckles slide into the two connecting slots respectively, and finally be locked by the fixing buckle and unlocking component to achieve a fixed connection.

[0015] Furthermore, the unlocking component includes a positioning frame and an unlocking button. The positioning frame is fixed inside the bottom cover, and a movable latch is integrally connected to the bottom of the unlocking button. The unlocking button and the movable latch slide outward from the inside of the bottom cover and engage in a slot on the side of the bottom cover. A spring is provided between the unlocking button and the positioning frame. When it is necessary to separate the control module and the battery module, simply press the unlocking button in the unlocking component, causing the movable latch to move inward from the bottom cover along with the unlocking button, thereby unlocking the corresponding connecting latch. This allows the connecting latch on the other side to easily disengage from the fixed latch, thus enabling the control module to be smoothly separated from the battery module. During this process, the spring is compressed when the unlocking button is pressed, and the spring rebounds when the unlocking button is released after the unlocking operation of the connecting latch is completed, thus resetting the unlocking button and the movable latch.

[0016] Furthermore, the integrated control circuit module is also equipped with a pressure sensor on its side. When the connecting buckles on both sides of the battery module are properly engaged with the connecting slots, the pressure sensor detects a value that reaches a preset threshold range and generates a signal. After receiving this signal, the green indicator light on the integrated control circuit module lights up, indicating that the connection between the control module and the battery module is normal. When the data detected by the pressure sensor does not reach the preset threshold range, the red indicator light on the integrated control circuit module lights up, indicating that a stable connection has not yet been fully established between the control module and the battery module.

[0017] Furthermore, to improve the stability of the assembly of the control module and the battery module, the bottom of the bottom cover and the top cover are designed with protrusions at the positions corresponding to the positioning slots. The protrusion structure is adapted to the positioning slot structure, and the two sides of the protrusion are provided with matching slots at the positions corresponding to the positioning buckles. After the control module and the battery module are combined, the protrusion is locked in the positioning slot, and at this time, the positioning buckles on both sides of the positioning slot are locked in the matching slots to play an auxiliary positioning and fixing effect.

[0018] Furthermore, to prevent damage to the power contacts when the control module is stored separately, the modular power supply also includes a protective end cover for the power terminals. The protective end cover for the power terminals includes a snap-on cover that is adapted to the bottom size of the control module. Both ends of the snap-on cover are integrally formed with connecting ears that engage with the positioning slots on both sides of the bottom cover. The inner side of the connecting ears is provided with an anti-detachment groove that is adapted to the fixed latch and the movable latch. When the control module is stored separately, the protective end cover for the power terminals is snapped onto the bottom of the control module, and it is fixed by the two connecting ears engaging with the fixed latch and the movable latch in the connecting slot.

[0019] The advantages of this utility model over the prior art are as follows:

[0020] In this invention, the control module and battery module for controlling charging and discharging are designed separately and connected detachably via a connection structure. When the power bank is idle for a long time, the control module with IC can be separated from the battery module and stored separately. This avoids the IC on the circuit board from self-consuming power due to long-term connection with the battery module, and also avoids the battery module from over-discharging in a short time. Compared with the integrated fixed assembly design of traditional power banks, the combined power bank proposed in this application can maximize the remaining power in the battery during the same storage time. This allows the battery module of the power bank to still retain a relatively safe amount of power during a longer storage time, effectively preventing the power bank from over-discharging in a short time, which would cause the battery to lose its relatively safe reserve of power during long-term idle time. This avoids problems such as battery bulging or battery failure. Moreover, with the independent storage of the control module, the power supply to the circuit board with IC is completely cut off, which effectively avoids the problem of the circuit board IC being powered on for a long time, thus accelerating the aging of the circuit board. This effectively extends the service life of the circuit board and minimizes the safety accident of battery fire caused by short circuit due to circuit board aging. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the battery module and the control module after they are separated in this utility model;

[0023] Figure 2 This is a schematic diagram of the combined structure of the battery module and control module in this utility model;

[0024] Figure 3 This is a schematic diagram of the disassembled structure of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the disassembled structure of this utility model. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the disassembled structure of this utility model. Figure 3 ;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of this utility model. Figure 4 ;

[0028] Figure 7 This is a schematic diagram of the disassembled structure of this utility model. Figure 5 ;

[0029] Figure 8 This is a schematic diagram of the disassembled structure of this utility model. Figure 6 ;

[0030] Figure 9 This is a schematic diagram of the control module in this utility model;

[0031] Figure 10 This is a schematic diagram of the structure of the protective end cover for the electrical terminal in this utility model.

[0032] Reference numerals: 1. Battery module; 101. Battery protective shell; 102. Positioning slot; 103. Positioning buckle; 104. Rotating shaft; 105. Contact port; 106. Lithium battery pack; 107. Power connector; 2. Control module; 201. Bottom cover; 211. Connecting slot; 212. Fixing latch; 213. Switch button cap; 214. Guide strip; 215. Power connection hole; 216. Rebound bracket; 21 7. Slot; 218. Adapter slot; 202. Face cover; 221. Positioning slot; 203. Integrated control circuit module; 231. Electrical contact; 232. Pressure sensor; 204. Unlocking component; 241. Positioning frame; 242. Unlocking button; 243. Movable latch; 244. Spring; 3. Electrical terminal protective end cover; 301. Buckle cover; 302. Connecting ear; 303. Anti-detachment slot; 4. Connecting buckle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is illustrative in nature and is not intended to limit the present utility model or its application or use in any way. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary rather than limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0037] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0039] Example

[0040] In response to the problem that in existing portable power bank designs, the battery and circuit board are welded into a fixed structure, and when not in use for a long time, the IC on the circuit board will generate self-discharge, causing the battery to discharge at a rate far exceeding the natural discharge rate, resulting in over-discharge of the battery in a short period of time and seriously affecting the lifespan of the portable power bank, we propose a combined portable power bank.

[0041] like Figures 1-2 As shown, this utility model discloses a combined portable power bank, specifically including a battery module 1 for storing electricity and a control module 2 for controlling the charging and discharging of the battery module 1. The control module 2 and the battery module 1 are detachably assembled and connected via a connecting buckle 4. During idle periods, the control module 2 and the battery module 1 can be separated and stored separately, which can prevent the IC on the circuit board from generating self-power due to long-term connection with the battery module 1, and can prevent the battery module 1 from being over-discharged in a short period of time. Compared with traditional portable power banks, it can maximize the preservation of the remaining power in the battery during the same placement time. Moreover, the independent storage of the control module 2 completely cuts off the power supply, which can effectively extend the service life of the circuit board and minimize the safety accidents caused by short circuits due to circuit board aging that could lead to battery fires.

[0042] In this embodiment, as Figure 4 , Figure 8As shown, the battery module 1 includes a battery protective shell 101 and a lithium battery pack 106 installed inside the battery protective shell 101. A set of positioning slots 102 are provided on each side of the top of the battery protective shell 101. There are two connecting buckles 4, which are respectively hinged to the sides of the positioning slots 102 on the top of the battery module 1 via a pivot 104.

[0043] In this embodiment, as Figures 3-9 As shown, the control module 2 includes a bottom cover 201 and a top cover 202, and an integrated control circuit module 203 with an IC fixed between the bottom cover 201 and the top cover 202; the bottom cover 201 has integrally formed connecting slots 211 on both sides for cooperating with the connecting buckle 4, wherein the integrated control circuit module 203 adopts a conventional mobile power bank dedicated control circuit.

[0044] In this embodiment, as Figure 8 As shown, the lithium battery pack 106 has a terminal plate 107 at its end. The terminal plate 107 has positive and negative terminals at both ends corresponding to the positioning slots 102. The terminal plate 107 is an insulating plate and its main function is to position and support the positive and negative terminals, facilitating the assembly of the control module 2 and the battery module 1. The edge of the integrated control circuit module 203 is welded with electrical contacts 231 for cooperating with the positive and negative terminals at the top of the battery module 1. The middle of the two positioning slots 102 is provided with contact ports 105 at the positions of the positive and negative terminals at both ends of the terminal plate 107, so that the positive and negative terminals at both ends of the terminal plate 107 are exposed to the outside through the contact ports 105, so that the electrical contacts 231 of the integrated control circuit can be connected to the positive and negative terminals on the terminal plate 107.

[0045] In this embodiment, as Figure 1 , Figure 3 As shown, the sides of the two connecting buckles 4 are grooved, and positioning buckles 103 are provided on both sides of the positioning slot 102. Under normal conditions, the connecting buckles 4 are engaged with the positioning buckles 103 in the positioning slot 102 through the grooved side design, thereby protecting the power contact 231 inside the contact port 105.

[0046] In this embodiment, as Figures 3-9 As shown, the bottom cover 201 and the top cover 202 are fastened together to form a complete outer shell structure to protect the internal integrated control circuit module 203. In order to position the electrical contacts 231 welded on the integrated control circuit module 203 so that the electrical contacts 231 can be in a predetermined position for a long time so as to make contact with the positive and negative terminals on the battery module 1, positioning grooves 221 are integrally formed at the bottom of the bottom cover 201 and the top cover 202 at opposite positions to position and fix the electrical contacts 231.

[0047] In this embodiment, as Figures 3-9 As shown, in order to facilitate the detachable assembly connection between the control module 2 and the battery module 1 via the connecting buckle 4, the inner sides of the connecting slots 211 on both sides of the bottom cover 201 are integrally formed with guide strips 214 for sliding and inserting with the side edges of the connecting buckle 4. A fixing buckle 212 is integrally formed in the middle and near the top of the connecting slot 211 on one side of the bottom cover 201, while a slot 217 is opened on the connecting slot 211 on the other side of the bottom cover 201, and an unlocking component 204 is installed inside the slot 217. With the design of the guide strip 214 and the groove structure of the edge of the connecting buckle 4, the connecting buckle 4 can only slide up and down in the corresponding connecting slot 211, so as to lock and unlock the connecting buckle 4 with the fixing buckle 212 and the unlocking component 204, thereby completing the detachable assembly between the control module 2 and the battery module 1.

[0048] In this embodiment, as Figures 6-9 As shown, in order to facilitate consumers' use of the power bank, a switch button cap 213 is installed on the side edge of the bottom cover 201 corresponding to the on / off switch position of the integrated control circuit module 203 via a spring-loaded bracket 216. The spring-loaded bracket 216 is fixedly clipped into a pre-set groove on the inner side of the bottom cover 201. At the same time, a power connection hole 215 is also provided on the side edge of the bottom cover 201 corresponding to the charging port position integrated in the integrated control circuit module 203.

[0049] In this embodiment, as Figure 2 , Figure 4 As shown, in order to facilitate the assembly and combination between the control module 2 and the battery module 1, the maximum rotation angle of the connecting buckle 4 around the rotating shaft 104 is 90 degrees, and both connecting buckles 4 are made of hard insulating plastic. The user only needs to rotate the two connecting buckles 4 to the maximum angle so that the connecting buckles 4 are aligned with the two sides of the battery protective shell 101. At this time, the control module 2 can be inserted from top to bottom along the length of the battery protective shell 101, so that the two connecting buckles 4 can be slid into the two connecting slots 211 respectively, and finally locked by the fixing latch 212 and the unlocking component 204 to achieve a fixed connection.

[0050] In this embodiment, as Figure 8As shown, the unlocking component 204 includes a positioning bracket 241 and an unlocking button 242. The positioning bracket 241 is fixed inside the bottom cover 201. A movable latch 243 is integrally connected to the bottom of the unlocking button 242. The unlocking button 242 and the movable latch 243 slide outward from the inside of the bottom cover 201 and engage with the slot 217 on the side of the bottom cover 201. A spring 244 is provided between the unlocking button 242 and the positioning bracket 241. When it is necessary to separate the control module 2 and the battery module 1, it is only necessary to press the unlocking button 242 in the unlocking component 204. 2. The movable latch 243 moves inward toward the bottom cover 201 along with the unlock button 242, unlocking the corresponding connecting latch 4. This allows the connecting latch 4 on the other side to easily break free from the constraint of the fixed latch 212, thus enabling the control module 2 to be successfully separated from the battery module 1. During this process, when the unlock button 242 is pressed, the spring 244 is compressed. After the unlocking operation of the connecting latch 4 is completed, when the unlock button 242 is released, the spring 244 rebounds, thus resetting the unlock button 242 and the movable latch 243.

[0051] In this embodiment, as Figure 6 , Figure 8 As shown, a pressure sensor 232 is also provided on the side of the integrated control circuit module 203. When the connecting buckles 4 on both sides of the battery module 1 are properly engaged with the connecting slots 211, the pressure sensor 232 detects a value that reaches a preset threshold range and generates a signal. After receiving the signal, the green indicator light on the integrated control circuit module 203 lights up, indicating that the connection between the control module 2 and the battery module 1 is normal. When the data detected by the pressure sensor 232 does not reach the preset threshold range, the red indicator light on the integrated control circuit module 203 lights up, indicating that a stable connection has not yet been fully established between the control module 2 and the battery module 1.

[0052] In this embodiment, as Figure 6 , Figure 9 As shown, in order to improve the stability of the assembly of the control module 2 and the battery module 1, the bottom of the bottom cover 201 and the top cover 202 are designed with protrusions at the positions corresponding to the positioning slots 102. The protrusion structure is adapted to the structure of the positioning slots 102, and the two sides of the protrusion are provided with matching slots 218 at the positions corresponding to the positioning buckles 103. After the control module 2 and the battery module 1 are combined, the protrusion is locked in the positioning slots 102. At this time, the positioning buckles 103 on both sides of the positioning slots 102 are locked in the matching slots 218 to play an auxiliary positioning and fixing effect.

[0053] In this embodiment, as Figure 1 , Figure 10As shown, when the control module 2 is stored alone, in order to prevent damage to the power contact 231, the combined power supply also includes a protective end cover 3 for the power terminal. The protective end cover 3 for the power terminal includes a buckle cover 301 that is adapted to the bottom size of the control module 2. The two ends of the buckle cover 301 are integrally formed with connecting ears 302 that are inserted into the positioning slots 102 on both sides of the bottom cover 201. The inner side of the connecting ears 302 is provided with an anti-detachment groove 303 that is adapted to the fixed latch 212 and the movable latch 243. When the control module 2 is placed alone, the protective end cover 3 for the power terminal is fastened to the bottom of the control module 2, and the two connecting ears 302 are fixed by cooperating with the fixed latch 212 and the movable latch 243 provided in the connecting slot 211.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined portable power bank, characterized in that: It includes a battery module (1) for storing electricity and a control module (2) for controlling the charging and discharging of the battery module (1). The control module (2) and the battery module (1) are detachably assembled and connected by a connecting buckle (4). The battery module (1) includes a battery protective shell (101) and a lithium battery pack (106) installed inside the battery protective shell (101). A set of positioning slots (102) is provided on each side of the top of the battery protective shell (101). There are two connecting buckles (4). The two connecting buckles (4) are respectively hinged to the sides of the positioning slots (102) on both sides of the top of the battery module (1) through a pivot (104). The control module (2) includes a bottom cover (201) and a top cover (202), and an integrated control circuit module (203) with an IC fixed between the bottom cover (201) and the top cover (202); the bottom cover (201) has integrally formed connecting slots (211) on both sides for cooperating with the connecting buckle (4).

2. The combined portable power bank according to claim 1, characterized in that: The lithium battery pack (106) has a terminal block (107) at its end. The terminal block (107) has positive and negative terminals at its two ends corresponding to the positions of the positioning slots (102). The two positioning slots (102) have contact ports (105) at their middle parts corresponding to the positions of the positive and negative terminals at both ends of the terminal block (107). The edge of the integrated control circuit module (203) is welded with electrical contacts (231) for cooperating with the positive and negative terminals at the top of the battery module (1).

3. A combined portable power bank according to claim 1, characterized in that: The two connecting buckles (4) have a groove-shaped side edge design. The positioning slot (102) is provided with positioning buckles (103) on both sides. Under normal conditions, the connecting buckle (4) is engaged with the positioning buckle (103) in the positioning slot (102) through the groove-shaped side edge design, thereby protecting the power contact (231) inside the contact port (105).

4. A combined portable power bank according to claim 1, characterized in that: The bottom cover (201) and the top cover (202) are fastened together and fixed. The bottom of the bottom cover (201) and the top cover (202) are integrally formed with positioning grooves (221) for positioning and fixing the electrical contacts (231). The inner side of the connecting slots (211) on both sides of the bottom cover (201) is integrally formed with guide strips (214) for sliding and inserting with the connecting buckle (4). The middle part and near the top of the connecting slot (211) on one side of the bottom cover (201) is integrally formed with a fixing buckle (212), while the connecting slot (211) on the other side of the bottom cover (201) is provided with a slot (217), and an unlocking component (204) is installed inside the slot (217). The bottom cover (201) has a switch button cap (213) installed on the side edge of the integrated control circuit module (203) corresponding to the on / off switch position. The bottom cover (201) has a power connection hole (215) on the side edge of the integrated control circuit module (203) corresponding to the charging port position.

5. A combined portable power bank according to claim 3, characterized in that: The maximum rotation angle of the connecting buckle (4) around the rotating shaft (104) is 90 degrees, and both connecting buckles (4) are made of rigid insulating plastic.

6. A combined mobile power supply according to claim 4, characterized in that: The unlocking component (204) includes a positioning frame (241) and an unlocking button (242). The positioning frame (241) is fixed inside the bottom cover (201). The bottom of the unlocking button (242) is integrally connected with a movable latch (243). The unlocking button (242) and the movable latch (243) slide from the inside of the bottom cover (201) to the outside and engage in the slot (217) on the side of the bottom cover (201). A spring (244) is provided between the unlocking button (242) and the positioning frame (241).

7. A combined portable power bank according to claim 1, characterized in that: The integrated control circuit module (203) is also equipped with a pressure sensor (232) on its side.

8. A combined mobile power supply according to claim 4, characterized in that: The bottom of the bottom cover (201) and the top cover (202) are designed with a boss at the position corresponding to the positioning slot (102). The boss structure is adapted to the positioning slot (102) structure, and the two sides of the boss are provided with matching slots (218) corresponding to the positioning buckle (103).

9. A combined portable power bank according to claim 1, characterized in that: It also includes a protective end cover (3) for the power connection terminal. The protective end cover (3) for the power connection terminal includes a buckle cover (301) adapted to the bottom size of the control module (2). The buckle cover (301) has connecting ears (302) integrally formed at both ends that are inserted into the positioning slots (102) on both sides of the bottom cover (201). The inner side of the connecting ears (302) is provided with an anti-disengagement groove (303) adapted to the fixed latch (212) and the movable latch (243).

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