Power bank

Abstract

The utility model discloses a power bank, which relates to the technical field of mobile power supplies and comprises an energy storage module and a charging and discharging module, a battery cell and a power transmission assembly are arranged in the energy storage module, a first power-on interface is arranged on the outer wall of the energy storage module, and the first power-on interface is electrically connected with the battery cell through the power transmission assembly; the charging and discharging module and the energy storage module are arranged in a split mode, a control module is arranged in the charging and discharging module, an output interface used for outputting electric energy and an input interface used for charging are formed in the charging and discharging module, a second power-on interface is formed in the outer wall of the charging and discharging module, and the output interface, the input interface and the second power-on interface are all electrically connected with the control module. The charging and discharging module can be detachably connected with the first power-on interface through the second power-on interface, the charging and discharging module and the energy storage module are arranged in a split mode, long-time endurance of the power bank can be achieved by only replacing the energy storage module, and the travel burden of people is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mobile power technology, and in particular to a power bank. Background Technology

[0002] With the widespread use of electronic devices, people often encounter situations where they need to charge their mobile phones and other electronic devices when they are out and about. Power banks are widely popular among consumers due to their portability and other advantages. However, power banks can only store a limited amount of electricity, so people often need to carry multiple power banks for emergencies. For example, according to the Chinese utility model patent application with publication number CN220253386U, when the power bank runs out, one can only replace it with another power bank, which is a heavy burden when traveling. Utility Model Content

[0003] The purpose of this invention is to provide a power bank with a separate charging / discharging module and an energy storage module, which can achieve long-term battery life by simply replacing the energy storage module, reducing the burden on people's travel and solving the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a power bank, comprising: an energy storage module and a charging / discharging module. The energy storage module contains a battery cell and a power transmission component. A first power interface is provided on the outer wall of the energy storage module, and the first power interface is electrically connected to the battery cell through the power transmission component. The charging / discharging module is separately disposed from the energy storage module. A control module is provided inside the charging / discharging module. The charging / discharging module has an output interface for outputting electrical energy and an input interface for charging. A second power interface is provided on the outer wall of the charging / discharging module. The output interface, the input interface, and the second power interface are all electrically connected to the control module. The charging / discharging module can be detachably connected to the first power interface through the second power interface, so that the energy storage module can supply power to the charging / discharging module.

[0006] In some embodiments, the charging / discharging module includes a first housing, a temperature detection device, a heat dissipation module, and a display module. The first housing includes a top housing and a bottom housing disposed at the bottom end of the top housing. The control module is disposed inside the top housing. The second power interface is disposed on the bottom housing. The output interface and the input interface are disposed on the top housing. The temperature detection device is disposed inside the top housing and is used to detect the internal temperature of the first housing. The temperature detection device is communicatively connected to the control module. The heat dissipation module is disposed inside the top housing and is used to dissipate heat from the charging / discharging module. The heat dissipation module is communicatively connected to the control module and can start and stop according to the detection value of the temperature detection device. The display area of ​​the display module is disposed on the surface of the top housing. The display module is communicatively connected to the control module and can display the power of the energy storage module and / or the temperature inside the first housing.

[0007] In some embodiments, the heat dissipation module is a cooling fan, and the top housing is provided with an air outlet and an air inlet. Both the air outlet and the air inlet are connected to the interior of the top housing to form a heat dissipation channel. The cooling fan is located in the heat dissipation channel to dissipate heat from the charging and discharging module.

[0008] In some embodiments, the display module includes a display screen and indicator lights; a display window is provided on the top housing, and a transparent protective plate is embedded in the display window; the display screen is embedded in the top housing and located at the display window; the display screen is communicatively connected to the control module; the indicator lights are provided on the top housing and located on the outer periphery of the display window.

[0009] In some embodiments, the energy storage module further includes a second housing and a cell frame, the cell frame being disposed inside the second housing, and both the cells and the power transmission assembly being detachably mounted on the cell frame. 。

[0010] In some embodiments, the power transmission component is a cell management module, which includes a cell main control circuit board, a charge / discharge control circuit board, and a power transmission circuit board. The cell main control circuit board is electrically connected to the cell frame. The charge / discharge control circuit board integrates a MOSFET for controlling the charge and discharge of the cell, and is electrically connected to the cell main control circuit board. The power transmission circuit board is electrically connected to the cell main control circuit board, and also has cell indicator lights. If the cell is a single cell, the cell indicator lights correspond one-to-one with the single cell. If there are multiple cells connected in series to form a cell string, the cell indicator lights correspond one-to-one with the cell string. The first power-on interface is electrically connected to the cell through the power transmission circuit board.

[0011] In some embodiments, the second housing includes a middle housing, an upper housing, and a lower housing. The middle housing is located outside the cell frame and is made of a light-transmitting material, allowing direct observation of the status of the cell indicator light. The upper housing is detachably fitted onto the top of the middle housing. One of the first and second power-on interfaces is a male connector, and the other is a female connector that is compatible with the male connector. The first power-on interface is located on the top surface of the upper housing, and when the first and second power-on interfaces are plugged in, the top surface fits against the bottom housing. The lower housing is detachably fitted onto the bottom of the middle housing.

[0012] In some embodiments, the energy storage module further includes a heat sink disposed on the middle housing and located between the upper housing and the lower housing, the heat sink being used to dissipate heat from the interior of the second housing.

[0013] In some embodiments, the charging and discharging module further includes a third power interface, which is disposed at the top of the top housing and electrically connected to the control module; the power bank includes multiple charging and discharging modules, each of which can be detachably connected to the second power interface of another charging and discharging module through the third power interface, so as to realize the series connection of multiple charging and discharging modules; the top surface of each upper housing is provided with multiple first power interfaces; the number of second power interfaces on each charging and discharging module is the same as the number of first power interfaces on each upper housing, and they correspond one-to-one; the number of third power interfaces on each charging and discharging module is the same as the number of second power interfaces, and they correspond one-to-one.

[0014] In some embodiments, the charging and discharging module further includes a parameter control button and a fast charging module button. The parameter control button includes a button body, a mounting bracket, and a button extension cap. The button body is fixed to the mounting bracket, which is detachably connected to the inside of the top housing. The button extension cap is fitted over the button body and extends out of the top housing through a through hole. The parameter control button is used to adjust the parameters on the display screen. The fast charging module button is located on the top housing. The control module integrates a fast charging module, and the fast charging module button is communicatively connected to the control module to start or stop the fast charging module.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] This utility model provides a power bank that separates the charging / discharging module and the energy storage module, with the control module located inside the charging / discharging module. The charging / discharging module and the energy storage module are detachably electrically connected via a second power interface and a first power interface. This allows for extended battery life by replacing different energy storage modules with the charging / discharging module, enabling users to carry only a suitable number of energy storage modules instead of multiple power banks, thus reducing the burden on users' travel. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of the power bank provided in the embodiments of this utility model;

[0019] Figure 2 for Figure 1 A top view of a power bank;

[0020] Figure 3 for Figure 1 A bottom view of a power bank;

[0021] Figure 4 Explosion of the charging and discharging module in the embodiments provided by this utility model Figure 1 ;

[0022] Figure 5 Explosion of the charging and discharging module in the embodiments provided by this utility model Figure 2 ;

[0023] Figure 6 An exploded view of the energy storage module in an embodiment provided by this utility model;

[0024] Figure 7 An exploded view of the energy storage module after the upper and lower housings have been removed in the embodiment provided by this utility model.

[0025] In the diagram: 100 - Power bank; 110 - Energy storage module; 11 - First power interface; 12 - Power transmission assembly; 121 - Battery cell main control circuit board; 122 - Charge / discharge control circuit board; 123 - Power transmission circuit board; 124 - Power transmission screw; 13 - Second housing; 131 - Upper housing; 132 - Middle housing; 133 - Lower housing; 134 - Heat sink; 135 - Connector; 14 - Battery cell frame; 200 - Charge / discharge module; 21 - Control module; 22 - Second power interface; 23 - First housing; 2 31-Top housing; 232-Bottom housing; 233-Air outlet; 234-Air inlet; 235-Input / output interface; 24-Cooling fan; 25-Display screen; 26-Transparent protective plate; 27-Third power interface; 28-Parameter control button; 281-Button body; 282-Mounting bracket; 283-Button extension cap; 29-Fast charging module button; 30-Indicator light; 31-Charging indicator light; 32-Discharging indicator light; 33-System status indicator light; 34-Fast charging module status indicator light. Detailed Implementation

[0026] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The purpose of this invention is to provide a power bank with a separate charging / discharging module and an energy storage module, which can achieve a long battery life by only replacing the energy storage module, reducing the burden of travel and solving the problems existing in the prior art.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-7 The present invention will be further described in detail below with reference to specific embodiments.

[0029] Example

[0030] This embodiment provides a power bank 100, for reference. Figures 1-5The system includes an energy storage module 110 and a charging / discharging module 200. The energy storage module 110 contains a battery cell and a power transmission assembly 12. A first power interface 11 is located on the outer wall of the energy storage module 110, and the first power interface 11 is electrically connected to the battery cell via the power transmission assembly 12. The charging / discharging module 200 is separate from the energy storage module 110. The charging / discharging module 200 contains a control module 21, and has an output interface for outputting electrical energy and an input interface for charging. A second power interface 200 is located on the outer wall of the charging / discharging module 200. The power interface 22, output interface, input interface, and second power interface 22 are all electrically connected to the control module 21. The charging and discharging module 200 can be detachably connected to the first power interface 11 through the second power interface 22. When the first power interface 11 and the second power interface 22 are connected, the energy storage module 110 and the charging and discharging module 200 are powered on, and the energy storage module 110 can supply power to the charging and discharging module 200. When the first power interface 11 and the second power interface 22 are disconnected, the energy storage module 110 and the charging and discharging module 200 are de-energized. By separating the charging / discharging module 200 and the energy storage module 110, the control module 21 is housed inside the charging / discharging module 200. The charging / discharging module 200 and the energy storage module 110 are detachably electrically connected via the second power interface 22 and the first power interface 11. This allows the power bank 100 to achieve extended battery life simply by replacing the energy storage module 110, enabling users to carry only a suitable number of energy storage modules 110 instead of multiple power banks 100, thus reducing the burden on users. The output and input interfaces can be arranged separately or integrated into a single input / output interface 235 that can both output power and charge. In this embodiment, the charging / discharging module 200 has one input / output interface 235. In other embodiments, the charging / discharging module 200 may also have multiple output interfaces and one input / output interface 235.

[0031] In some implementations, reference Figures 4-5The charging / discharging module 200 includes a first housing 23, a temperature detection device, a heat dissipation module, and a display module. The first housing 23 includes a top housing 231 and a bottom housing 232 located at the bottom of the top housing 231. The control module 21 is located inside the top housing 231, the second power interface 22 is located on the bottom housing 232, and the output interface and input interface are located on the top housing 231. The temperature detection device is located inside the top housing 231 and is used to detect the internal temperature of the first housing 23. The temperature detection device is communicatively connected to the control module 21. The heat dissipation module is located inside the top housing 231 and is used to dissipate heat for the charging / discharging module 200. The heat dissipation module is communicatively connected to the control module 21 and can start and stop according to the detection value of the temperature detection device. Generally, a temperature threshold is preset in the control module 21. When the detection value of the temperature detection device reaches the temperature threshold, the heat dissipation module will start under the control of the control module 21. Conversely, when the detection value of the temperature detection device is lower than the temperature threshold, the heat dissipation module remains off. The display module's display area is located on the surface of the top housing 231. The display module is communicatively connected to the control module 21 and can display the power level of the energy storage module 110 and / or the temperature inside the first housing 23. Because the control module 21 easily overheats during high-power output, leading to overheating inside the charging / discharging module 200, the operating speed and lifespan of the control module 21 decrease due to high temperatures. Therefore, a heat dissipation module is provided to dissipate heat inside the charging / discharging module 200, ensuring the control module 21 maintains good operation and extends its lifespan, thus guaranteeing the lifespan of the charging / discharging module 200. By setting up a display module and communicating with the control module 21, the parameters of the power bank 100 can be viewed through the display module, allowing users to easily monitor the current power consumption and temperature status, and better plan the usage of the power bank 100. By setting up a temperature detection device and communicating with the control module 21, the start and stop of the heat dissipation module can be controlled based on the temperature detection value, achieving automatic start / stop control of the heat dissipation module. When the temperature is high, the heat dissipation module is turned on for heat dissipation; when the temperature drops, the heat dissipation module is turned off to save energy. In this embodiment, the temperature detection device is integrated into the control module 21.

[0032] In some implementations, reference Figures 4-5The heat dissipation module is a cooling fan 24. The top housing 231 is provided with an air outlet 233 and an air inlet 234. Both the air outlet 233 and the air inlet 234 are connected to the interior of the top housing 231 to form a heat dissipation channel. The cooling fan 24 is located inside the heat dissipation channel to dissipate heat from the charging / discharging module 200. By setting the heat dissipation module as a cooling fan 24 and providing an air outlet 233 and an air inlet 234 on the top housing 231, when the cooling fan 24 is started, it can drive air from the air inlet 234 to the air outlet 233 to remove heat from the interior of the first housing 23. The structure is simple and easy to achieve heat dissipation from the interior of the charging / discharging module 200.

[0033] In some embodiments, the air inlet 234 and the air outlet 233 are located on different sides of the top housing 231. The air inlet 234 can be multiple grille holes or a single through hole, and the air outlet 233 can be multiple grille holes or a single through hole.

[0034] In some implementations, reference Figures 4-5 The display module includes a display screen 25 and an indicator light 30. A display window is provided on the top housing 231, and a transparent protective plate 26 is embedded within the display window. The display screen 25 is embedded in the top housing 231 and located at the display window. The display screen 25 is located inside the transparent protective plate 26, and the display area on the display screen 25 is fully exposed within the transparent protective plate 26 for direct observation by the user. The display screen 25 is communicatively connected to the control module 21. The indicator light 30 is located on the top housing 231 and on the outer periphery of the display window. The indicator light 30 illuminates the display screen 25, facilitating viewing of the displayed content. By placing the transparent protective plate 26 outside the display screen 25, the display screen 25 is better protected, preventing accidental damage and ensuring the service life of the charging / discharging module 200. In this embodiment, the indicator lights 30 include a charging indicator light 31, a discharging indicator light 32, a system status indicator light 33, and a fast charging module status indicator light 34. Each indicator light is equipped with an indicator light protection plate, which is embedded in the first housing 23. Each indicator light is located inside its corresponding indicator light protection plate, allowing the user to directly observe the light of each indicator light. In this embodiment, the fast charging module status indicator light 34 and the system status indicator light 33 are located on the outer periphery of the display window, while the charging indicator light 31 and the discharging indicator light 32 are located on the side of the top housing 231 opposite to the display window.

[0035] In some implementations, reference Figures 6-7The energy storage module 110 also includes a second housing 13 and a cell frame 14. The cell frame 14 is disposed inside the second housing 13, and both the cells and the power transmission assembly 12 can be detachably installed on the cell frame 14. By detachably mounting the cells on the cell frame 14, the energy storage module 110 can be maintained by directly replacing the cells when their health is poor or they are damaged, saving maintenance and replacement costs. The cells and the cell frame 14 can be insulated or directly electrically connected. In this embodiment, the cells are electrically connected to the cell frame 14. In some other embodiments, the cell frame 14 may not be provided, and the cells may be directly disposed inside the second housing 13 and electrically connected to the power transmission assembly 12.

[0036] In some implementations, reference Figures 6-7 The power transmission component 12 is a cell management module, which includes a cell main control circuit board 121, a charge / discharge control circuit board 122, and a power transmission circuit board 123. The cell main control circuit board 121 is electrically connected to each cell frame 14. The charge / discharge control circuit board 122 integrates a MOSFET for controlling the charge and discharge of the cells. The charge / discharge control circuit board 122 is electrically connected to the cell main control circuit board 121. The power transmission circuit board 123 is electrically connected to the cell main control circuit board 121, and a cell indicator light is also provided on the power transmission circuit board 123. If the cell is a single cell, the cell indicator light corresponds one-to-one with the single cell. If there are multiple cells connected in series to form a cell string, the cell indicator light corresponds one-to-one with the cell string. The first power interface 11 is electrically connected to the cell through the power transmission circuit board 123. The main control circuit board 121 for the battery cell is a mature technology in this field, integrating battery cell protection functions, including a main control MCU, battery cell status monitoring, balancing circuit, isolation communication, and other modules. Working in conjunction with the charge / discharge control circuit board 122, it can manage the battery cell's balancing state and output state to ensure the battery cell's lifespan. In this embodiment, the main control circuit board 121 and the charge / discharge control circuit board 122 are electrically connected via power supply screws 124, and the main control circuit board 121 and the power supply circuit board 123 are also electrically connected via power supply screws 124. In other embodiments, electrical connections between the circuit boards can also be achieved via wires. By setting a battery cell indicator light on the power supply circuit board 123, it is possible to visually observe whether the battery cell is in a balanced state, promptly detect any battery cell malfunctions, and replace the battery cell in a timely manner, avoiding damage to the lifespan of the power bank 100 or other battery cells. In this embodiment, four cell racks 14 and twelve cells are provided. The four cell racks 14 are arranged in two columns inside the second housing 13, and three cells are arranged side by side on each cell rack 14. Two cells in the same column on two adjacent cell racks 14 form a cell string. In other embodiments, the number of cell racks 14 and cells can be flexibly adjusted, for example, one cell rack 14 and one cell can be provided.

[0037] In some implementations, reference Figures 6-7 The second housing 13 includes a middle housing 132, an upper housing 131, and a lower housing 133. The middle housing 132 is located outside the cell frame 14. The power transmission circuit board 123 is disposed on the cell frame 14 and located between the middle housing 132 and the cell frame 14. The middle housing 132 is made of a light-transmitting material, allowing direct observation of the status of the cell indicator lights. The upper housing 131 is detachably fitted onto the top of the middle housing 132. One of the first power interface 11 and the second power interface 22 is a male connector, and the other is a female connector that is compatible with the male connector. The first power interface 11 is located on the top surface of the upper housing 131, and when the first power interface 11 and the second power interface 22 are plugged in, the top surface fits against the bottom housing 232. The lower housing 133 is detachably fitted onto the bottom of the middle housing 132. By providing an upper housing 131 and a lower housing 133 detachably connected to the middle housing 132, the battery cells can be replaced after removing the upper housing 131 and the lower housing 133. The structure is simple and easy to disassemble. In this embodiment, the middle housing 132 consists of two side housings, which are located on the outside of the two power transmission circuit boards 123, which are respectively arranged on both sides of the battery cell frame. In some other embodiments, the middle housing 132 can also be an annular housing surrounding the outer circumference of the power bank 100. In this embodiment, the upper housing 131 and lower housing 133 are fitted onto the middle housing 132 and then bolted to it. In other embodiments, the upper housing 131 and lower housing 133 can be detachably connected to the middle housing 132 using a snap-fit ​​or similar structure. After the upper housing 131, lower housing 133, and middle housing 132 are assembled, they form a connected cavity inside, where the power transmission assembly 12, the cell frame 14, and the cells are all located. By making the middle housing 132 a light-transmitting material, the user can directly observe the status of the cell indicator light, protecting the power transmission circuit board 123 while making the status of the cell indicator light more intuitive. In this embodiment, the middle housing 132 is specifically made of PETG (polyethylene terephthalate-1,4-cyclohexanediol ester). In other embodiments, the middle housing 132 can also be made of other materials that allow direct observation of the cell indicator light, such as PET (polyethylene terephthalate).

[0038] In some implementations, reference Figures 6-7The energy storage module 110 also includes a heat sink 134, which is disposed on the middle housing 132 and located between the upper housing 131 and the lower housing 133. The heat sink 134 is used to dissipate heat from the inside of the second housing 13. In this embodiment, the heat sink 134 is a metal grid plate. In other embodiments, the heat sink 134 can also be other heat-conducting plates. By setting the heat sink 134, heat can be dissipated from the inside of the second housing 13 to the external environment, so that the heat dissipated by the battery cell during operation can be dissipated in a timely manner through the heat sink 134. This avoids the battery cell's operating environment becoming too poor due to excessively high internal temperature of the second housing 13, which would reduce the battery cell's lifespan and ensure the lifespan of the energy storage module 110. In this embodiment, the heat sink 134 is engaged with two connectors 135 on both sides. The inner side of the connector 135 abuts against the power supply screw 124, and the outer sides of the two connectors 135 abut against the two side shells of the middle section housing 132. The heat sink 134 is located between the upper housing 131 and the lower housing 133, and the top and bottom edges of the heat sink 134 abut against the upper housing 131 and the lower housing 133, respectively, thereby exposing the heat sink 134 on the surface of the second housing 13 so that the second housing 13 can exchange heat through the heat sink 134. Two heat sinks 134 are symmetrically installed on the upper and lower sides of the second housing 13.

[0039] In some implementations, reference Figures 1-5The charging / discharging module 200 also includes a third power interface 27, which is located at the top of the top housing 231 and is electrically connected to the control module 21. The power bank 100 includes multiple charging / discharging modules 200, each of which can be detachably connected to the second power interface 22 of another charging / discharging module 200 via the third power interface 27, so as to realize the series connection of multiple charging / discharging modules 200. The top surface of each upper housing 131 is provided with multiple first power interfaces 11. The number of second power interfaces 22 on each charging / discharging module 200 is the same as the number of first power interfaces 11 on each upper housing 131, and they correspond one-to-one. The number of third power interfaces 27 on each charging / discharging module 200 is the same as the number of second power interfaces 22, and they correspond one-to-one. A third power interface 27 is provided at the top of the top housing 231 of the charging / discharging module 200. By connecting to the second power interface 22 of another charging / discharging module 200, one energy storage module 110 can supply power to two charging / discharging modules 200, thus multiplying the input / output interfaces 235 and enabling simultaneous charging of multiple devices. This eliminates the need for users to carry multiple power banks 100, reducing their travel burden. The connection between the charging / discharging module 200 and the energy storage module 110 is achieved through the connection of multiple first power interfaces 11 and multiple second power interfaces 22, ensuring a secure and stable connection between the charging module and the energy storage module 110. In this embodiment, the first power interface 11 is a female connector, the second power interface 22 is a male connector, and the third power interface 27 is a female connector. After one charge / discharge module 200 is plugged into another charge / discharge module 200, the corresponding second power interface 22 and third power interface 27 are connected, and the top of the top housing 231 of the charge / discharge module 200 can fit into the bottom housing 232 of the other charge / discharge module 200.

[0040] In some implementations, reference Figures 2-5The charging and discharging module 200 also includes a parameter control button 28 and a fast charging module button 29. The parameter control button 28 includes a button body 281, a mounting bracket 282, and a button extension cap 283. The button body 281 is fixed on the mounting bracket 282, which is detachably connected to the inside of the top housing 231. The button extension cap 283 is sleeved on the outside of the button body 281 and passes through a through hole in the top housing 231 and extends out of the top housing 231. The parameter control button 28 is used to adjust the parameters on the display screen 25. The fast charging module button 29 is set on the top housing 231. The control module 21 integrates a fast charging module, and the fast charging module button 29 is communicatively connected to the control module 21 to start or stop the fast charging module. By setting the parameter control button 28, the parameters of the power bank 100 can be adjusted via the control module 21, such as automatic screen-off time, LED brightness, buzzer on / off, high temperature alarm threshold, low temperature alarm threshold, high humidity alarm threshold, overcurrent alarm threshold, low voltage alarm threshold, cooling fan 24 on / off temperature, and permanent on / off status. In this embodiment, the parameter control button 28 is a 5D button, which allows for parameter adjustment by tossing or pressing the 5D button, making it convenient to use. In other embodiments, the parameter control button 28 can also be a set of buttons with directional control. Additionally, a fast charging module button 29 can be set to start or stop the fast charging module, allowing the user to decide whether to enable fast charging based on the usage scenario, thus improving the user experience.

[0041] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A power bank, characterized in that: include: An energy storage module, comprising a battery cell and a power transmission assembly, wherein a first power interface is provided on the outer wall of the energy storage module, and the first power interface is electrically connected to the battery cell through the power transmission assembly; and A charging / discharging module is separately configured from the energy storage module. The charging / discharging module contains a control module, an output interface for outputting electrical energy, and an input interface for charging. A second power interface is located on the outer wall of the charging / discharging module. The output interface, the input interface, and the second power interface are all electrically connected to the control module. The charging / discharging module can be detachably connected to the first power interface via the second power interface to allow the energy storage module to supply power to it.

2. The power bank according to claim 1, characterized in that: The charging / discharging module includes: The first housing includes a top housing and a bottom housing disposed at the bottom end of the top housing. The control module is disposed inside the top housing. The second power interface is disposed on the bottom housing. The output interface and the input interface are disposed on the top housing. A temperature detection device is installed inside the top housing to detect the internal temperature of the first housing; the temperature detection device is communicatively connected to the control module. A heat dissipation module, disposed inside the top housing, is used to dissipate heat from the charging / discharging module; the heat dissipation module is communicatively connected to the control module and can start and stop based on the detection value of the temperature detection device; and The display module has a display area disposed on the surface of the top housing. The display module is communicatively connected to the control module and can display the power of the energy storage module and / or the temperature inside the first housing.

3. The power bank according to claim 2, characterized in that: The heat dissipation module is a cooling fan. The top housing is provided with an air outlet and an air inlet. Both the air outlet and the air inlet are connected to the interior of the top housing to form a heat dissipation channel. The cooling fan is located in the heat dissipation channel to dissipate heat from the charging and discharging module.

4. The power bank according to claim 2, characterized in that: The display module includes a display screen and indicator lights; A display window is provided on the top housing, and a transparent protective plate is embedded in the display window; the display screen is embedded in the top housing and located at the display window; the display screen is communicatively connected to the control module. The indicator light is located on the top housing and on the outer periphery of the display window.

5. The power bank according to any one of claims 2 to 4, characterized in that: The energy storage module also includes: Second shell; The cell frame is disposed inside the second housing, and both the battery cell and the power transmission assembly can be detachably mounted on the cell frame. 。 6. The power bank according to claim 5, characterized in that: The power transmission component is a cell management module, which includes: A main control circuit board for battery cells, which is electrically connected to the battery cell frame; A charge / discharge control circuit board, integrating a MOSFET for controlling the charge / discharge of the battery cell, wherein the charge / discharge control circuit board is electrically connected to the main control circuit board of the battery cell; and A power transmission circuit board is electrically connected to the main control circuit board of the battery cell. The power transmission circuit board is also provided with a battery cell indicator light. If the battery cell is a single cell, the battery cell indicator light corresponds one-to-one with the single cell. If the battery cell consists of multiple cells connected in series to form a battery cell string, the battery cell indicator light corresponds one-to-one with the battery cell string. The first power-on interface is electrically connected to the battery cell through the power transmission circuit board.

7. The power bank according to claim 6, characterized in that: The second housing includes: The middle section housing is located on the outside of the cell frame. The middle section housing is made of light-transmitting material, allowing direct observation of the status of the cell indicator light. The upper housing is detachably fitted onto the top of the middle housing; one of the first and second power interfaces is a male connector, and the other is a female connector adapted to the male connector; the first power interface is located on the top surface of the upper housing, and when the first and second power interfaces are plugged in, the top surface fits against the bottom housing; and The lower housing is detachably fitted onto the bottom of the middle housing.

8. The power bank according to claim 7, characterized in that: The energy storage module also includes a heat sink, which is disposed on the middle housing and located between the upper housing and the lower housing. The heat sink is used to dissipate heat from the interior of the second housing.

9. The power bank according to claim 7, characterized in that: The charging and discharging module also includes a third power interface, which is located at the top of the top housing and is electrically connected to the control module. The power bank includes multiple charging and discharging modules, and each charging and discharging module can be detachably connected to the second power interface of another charging and discharging module through the third power interface, so as to realize the series connection of multiple charging and discharging modules. Each of the upper housings has a plurality of first power interfaces on its top surface; the number of second power interfaces on each of the charging and discharging modules is the same as the number of first power interfaces on each of the upper housings, and they correspond one-to-one; the number of third power interfaces on each of the charging and discharging modules is the same as the number of second power interfaces, and they correspond one-to-one.

10. The power bank according to claim 4, characterized in that: The charging and discharging module further includes: The parameter control button includes a button body, a mounting bracket, and a button extension cap. The button body is fixed to the mounting bracket, which is detachably connected to the inside of the top housing. The button extension cap is fitted onto the outside of the button body and extends out of the top housing through a through hole. The parameter control button is used to adjust the parameters on the display screen. A fast charging module button is located on the top housing; the control module integrates a fast charging module, and the fast charging module button is communicatively connected to the control module to start or stop the fast charging module.

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