A charging and discharging integrated battery box structure

Abstract

The utility model discloses a kind of charge-discharge integrated battery box structure, comprising: shell, battery pack and charge-discharge control circuit being set in shell. Only DC interface is equipped on shell, and the exposed end is exposed to bottom surface, and DC interface is electrically connected with charge-discharge control circuit, and control circuit connects battery pack. When DC interface is connected to external charging power supply, control circuit enters charging mode;When connected to external power equipment, enter discharge mode, realize charge-discharge automatic switching. Shell side end is equipped with the physical switch button connected with control circuit, for controlling light state. Battery box bottom surface contour is matched with charging base slot, after insertion, DC interface and charging contact point axial butt joint, realize fixed and electrical connection. Multiple battery boxes can be independently inserted into different slots of the same charging base, to realize synchronous charging. The structure simplifies interface design, improves operation convenience and use safety, and is suitable for multi-scene intelligent power supply equipment.

Description

Technical Field

[0001] This utility model relates to the field of battery box technology, and in particular to a battery box structure that integrates charging and discharging. Background Technology

[0002] With the widespread use of portable electronic devices, power tools, and electric vehicles, higher demands are being placed on battery energy management systems. Traditional battery box designs often separate the charging and discharging interfaces, requiring users to connect the charger and the device separately, which is cumbersome and prone to errors. Furthermore, the charging and discharging control circuits are typically two independent modules, resulting in complex structures, higher costs, and increased device size.

[0003] Some existing battery box solutions attempt to integrate charging and discharging functions into a single battery box, but they typically retain multiple physical interfaces. This not only affects structural compactness but also hinders efficient charging management of multiple battery packs on a centralized charging dock. Furthermore, some products fail to achieve quick and stable docking between the battery box and the charging dock, impacting charging efficiency and reliability. Some designs lack clear operating state switching mechanisms, making operation inconvenient when users switch usage scenarios and even posing safety hazards due to unstable electrical connections.

[0004] In summary, existing technologies still have significant shortcomings in achieving integrated charging and discharging, compact structure, unified interface, centralized management of multiple battery groups, and user-friendly operation. An improved battery box structure is urgently needed to solve these problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an integrated charging and discharging battery box structure, which can realize integrated charging and discharging, improve structural compactness, interface uniformity, and centralized management of multiple battery groups.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a charging and discharging integrated battery box structure, comprising: a shell, a battery pack disposed within the shell, and a charging and discharging control circuit;

[0007] The housing has a single DC interface, and the plug end of the DC interface is exposed on the bottom surface.

[0008] The DC interface is electrically connected to the charge / discharge control circuit, which is also connected to the battery pack.

[0009] When the DC interface is connected to an external charging power source, the charge / discharge control circuit enters the charging mode and introduces the external charging current into the battery pack; when the DC interface is connected to an external electrical device, the charge / discharge control circuit enters the discharging mode and outputs the electrical energy of the battery pack to the external electrical device.

[0010] A physical switch button is provided on the side of the housing, and the physical switch button is mechanically connected to the light switching switch S1 of the charging and discharging control circuit; when the physical switch button is pressed, the conduction state of the light switching switch S1 is switched.

[0011] The bottom contour of the integrated charging and discharging battery box matches the shape of the slot opening of the charging base. When the integrated charging and discharging battery box is inserted into the slot of the charging base, the plug end of the DC interface forms an axial connection with the charging contact in the slot, so that the integrated charging and discharging battery box is fixed on the charging base and an electrical connection is established.

[0012] Multiple of the aforementioned integrated charging and discharging battery boxes can be independently plugged into different slots of the same charging base and charged synchronously through their respective DC interfaces.

[0013] Furthermore, the charging and discharging control circuit includes a charging management chip U1, a charging and discharging protection chip U2, a main control microcontroller chip U3, a first MOSFET Q1, and a second MOSFET Q2;

[0014] Pin 3 of the charging management chip U1 is connected to the positive terminal of the battery pack, pin 4 of the charging management chip U1 is connected to the charging voltage, pin 2 of the charge / discharge protection chip U2 is connected to the negative terminal of the battery pack, and pin 3 of the charge / discharge protection chip U2 is connected to the positive terminal of the battery pack.

[0015] Pin 3 of the main control microcontroller chip U3 is connected to one end of the light switch S1, and the other end of the light switch S1 is grounded. Pin 1 of the main control microcontroller chip U3 is connected to the positive terminal of the battery pack. Pin 5 of the main control microcontroller chip U3 is connected to the gate of the first MOSFET Q1, and the drain of the first MOSFET Q1 is connected to the discharge voltage. Pin 7 of the main control microcontroller chip U3 is connected to the gate of the second MOSFET Q2, and the drain of the second MOSFET Q2 is connected to the positive terminal of the battery pack. The source of the first MOSFET Q1 is connected to the source of the second MOSFET Q2. Pin 6 of the main control microcontroller chip U3 is connected to the output voltage of the charge and discharge detection circuit.

[0016] Pin 1 of the DC interface is connected to the charging voltage, pin 2 of the DC interface is grounded, and pin 3 of the DC interface is connected to the output voltage of the charge / discharge detection circuit.

[0017] Furthermore, the plug end of the DC interface is a cylindrical metal sleeve structure with an axially extending insulating separator ring on its inner wall, which divides the inner cavity of the cylindrical metal sleeve structure into a positive contact area and a negative contact area; the charging contacts of the charging base are a set of elastic pins that match the position of the separator ring.

[0018] Furthermore, the battery pack is composed of at least two pouch lithium battery cells connected in parallel, with a thermally conductive silicone layer filling the space between the pouch lithium battery cells; the inner sidewall of the housing is provided with metal heat dissipation fins that are attached to the surface of the battery cells, and the metal heat dissipation fins extend to the ventilation holes opened at the side end of the housing.

[0019] Furthermore, the physical switch button is connected to the light switch S1 via a built-in spring reset slider; the bottom of the spring reset slider is provided with a V-shaped groove, and the toggle lever of the light switch S1 is embedded in the V-shaped groove, so that the switch state is switched by a single press of the button.

[0020] Furthermore, a dual-color LED indicator is embedded on the outer surface of the housing, and its pins are soldered to the circuit board of the charging and discharging control circuit; the light switching switch S1 is a dual-channel toggle switch, which controls the on / off of the red / green power supply lines of the dual-color LED indicator to display the charging / discharging status.

[0021] Furthermore, the charging base is equipped with an independently isolated multi-channel DC-DC step-down module. The input terminals of each module are connected in parallel to the power interface of the base, and the output terminals are respectively connected to the charging contacts of the corresponding slots. The feedback loop of each step-down module is connected to an independent current detection chip.

[0022] Furthermore, the bottom contour of the housing is an asymmetrical polygon, and at least one corner is provided with a guide bevel; the slot opening of the charging base has a concave-convex structure that perfectly matches the asymmetrical polygon, so that the battery box can only be inserted in one direction.

[0023] The beneficial effects of this utility model are:

[0024] (1) Unified interface and simplified operation: By setting only one DC interface to unify the charging and discharging functions, the user operation process is greatly simplified, avoiding connection confusion and misoperation problems caused by multiple interface designs.

[0025] (2) Automatic switching mode to improve intelligence: The charging and discharging control circuit can automatically identify and switch to the corresponding charging or discharging mode according to the DC interface connected object (charging power supply or electrical equipment), without the need for manual adjustment by the user, thus improving the intelligence and reliability of the system.

[0026] (3) Compact structure and strong adaptability: The bottom DC interface design achieves precise docking with the charging base slot, so that the battery box can be mechanically fixed and electrically connected when inserted into the base, which improves the ease of use and the compact structure.

[0027] (4) Supports parallel charging of multiple battery groups to improve efficiency: Multiple battery boxes can be plugged into different slots of the charging base for synchronous charging, which is suitable for application scenarios that require large-scale battery management and rapid deployment.

[0028] (5) It has a lighting control function to enhance the user interaction experience: the lighting control switch can be operated through the physical button on the side of the housing, which makes it easy for users to get work prompts or visual feedback in different usage states.

[0029] (6) Enhanced safety and compatibility: Optimized interface design and electrical connection methods effectively reduce the risk of poor electrical contact and misinsertion, thereby improving the overall safety and service life of the product. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the internal structure of the integrated charging and discharging battery box in this utility model;

[0031] Figure 2 This is a schematic diagram of the external structure of the integrated charging and discharging battery box structure in this utility model;

[0032] Figure 3 This is a circuit diagram of the charge / discharge management circuit in this utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the soft-pack lithium battery cell, the thermally conductive silicone layer, and the metal heat dissipation fins in this utility model.

[0034] Reference numerals: 1. Housing; 2. Battery pack; 3. Charge / discharge control circuit; 4. DC interface; 5. Physical switch button; 6. Insulating separator ring; 7. Soft-pack lithium battery cell; 8. Thermally conductive silicone layer; 9. Metal heat sink fins; 10. Dual-color LED indicator; 11. Ventilation hole. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0036] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present utility model. This embodiment provides a charging and discharging integrated battery box structure, which can realize charging and discharging integration, improve structural compactness, interface uniformity and centralized management of multiple battery groups, including a housing 1, a battery group 2 disposed in the housing 1 and a charging and discharging control circuit 3.

[0037] The housing 1 is a closed structure used to house the battery pack 2 and the charging and discharging control circuit 3. The bottom of the housing 1 has a unique DC interface 4, and the side has a physical switch button 5.

[0038] The battery pack 2 is composed of several rechargeable cells (such as lithium-ion batteries) connected in series and parallel, installed inside the housing 1, and its output terminal is electrically connected to the charging and discharging control circuit 3.

[0039] The plug end of DC interface 4 is exposed on the bottom surface. This interface is the only power input / output channel, which can be connected to a charging power source or to external electrical equipment. DC interface 4 is electrically connected to the charging and discharging control circuit 3. The charging and discharging control circuit 3 is bidirectionally connected to DC interface 4 and battery pack 2 to realize automatic switching of charging and discharging modes and power management.

[0040] When DC interface 4 is connected to an external charging power source, the charge / discharge control circuit 3 enters the charging mode and introduces the external charging current into the battery pack 2; when DC interface 4 is connected to an external electrical device, the charge / discharge control circuit 3 enters the discharging mode and outputs the electrical energy of the battery pack 2 to the external electrical device.

[0041] A physical switch button 5 is provided on the side of the housing 1. The physical switch button 5 is mechanically connected to the light switching switch S1 of the charging and discharging control circuit 3. When the physical switch button 5 is pressed, the conduction state of the light switching switch S1 is switched, which can be used to control the lighting state of the lighting lamp, including constant light, breathing, strobe, dim light, etc.

[0042] The bottom contour of the integrated charging and discharging battery box matches the shape of the slot opening of the charging base. When the integrated charging and discharging battery box is inserted into the slot of the charging base, the plug end of the DC interface 4 forms an axial connection with the charging contacts in the slot, so that the integrated charging and discharging battery box is fixed on the charging base and an electrical connection is established.

[0043] Multiple integrated charging and discharging battery boxes can be independently plugged into different slots on the same charging base and charged synchronously through their respective DC interfaces.

[0044] Working principle of Example 1:

[0045] When the user connects this battery box to an external charging power source (such as an adapter or charging dock) via DC interface 4, the detection circuit connected to the charge / discharge control circuit 3 detects that the input voltage is higher than the voltage of the battery pack 2, thus determining that charging mode has been activated and automatically closing the charging path. The current is then regulated by the charge / discharge control circuit 3 and introduced into the battery pack 2 to achieve safe charging.

[0046] When the user connects the battery box to an external power device via DC interface 4, the detection circuit recognizes the presence of a load and that the voltage is lower than that of battery pack 2. It then enters the discharge mode, automatically switches to the discharge path, and stably outputs the power of battery pack 2 to the external device.

[0047] The control circuit integrates voltage and current detection and protection mechanisms, such as overvoltage protection, overcurrent protection, short circuit protection, and temperature detection, to ensure the safety and stability of the battery box during charging and discharging.

[0048] The physical switch button 5 can switch the lighting status of the connected lighting module, including constant light, breathing light, strobe light, and dim light, improving the user interaction experience.

[0049] Multiple battery boxes can be inserted into different slots of the charging base. The DC interface 4 is axially connected to the charging contacts in the slot. The system can simultaneously identify multiple batteries and independently control their charging process, realizing synchronous charging and centralized management of multiple batteries.

[0050] Preferred, refer to Figure 3The charging and discharging control circuit 3 includes a charging management chip U1, a charging and discharging protection chip U2, a main control microcontroller chip U3, a first MOSFET Q1, and a second MOSFET Q2. Pin 3 of the charging management chip U1 is connected to the positive terminal of the battery pack 2, and pin 4 of the charging management chip U1 is connected to the charging voltage. Pin 2 of the charging and discharging protection chip U2 is connected to the negative terminal of the battery pack 2, and pin 3 of the charging and discharging protection chip U2 is connected to the positive terminal of the battery pack 2. Pin 3 of the main control microcontroller chip U3 is connected to one end of the light switching switch S1. The other end of switch S1 is grounded. Pin 1 of the main control microcontroller chip U3 is connected to the positive terminal of battery pack 2. Pin 5 of the main control microcontroller chip U3 is connected to the gate of the first MOSFET Q1. The drain of the first MOSFET Q1 is connected to the discharge voltage. Pin 7 of the main control microcontroller chip U3 is connected to the gate of the second MOSFET Q2. The drain of the second MOSFET Q2 is connected to the positive terminal of battery pack 2. The source of the first MOSFET Q1 is connected to the source of the second MOSFET Q2. Pin 6 of the main control microcontroller chip U3 is connected to the output voltage of the charge and discharge detection circuit.

[0051] exist Figure 2 In the diagram, VCC represents the charging voltage, VLED represents the discharging voltage, V1 represents the output voltage of the charge / discharge detection circuit, and the circuit symbol J1 represents DC interface 4. Pin 1 of DC interface 4 is connected to the charging voltage, pin 2 of DC interface 4 is grounded, and pin 3 of DC interface 4 is connected to the output voltage of the charge / discharge detection circuit.

[0052] Specifically, in this embodiment, when the charge and discharge control circuit 3 enters the charging mode, the main control microcontroller chip U3 shuts down its own pin 3, the light switching switch S1 fails, the charging management chip U1 manages the charging process of the battery pack 2, the first MOSFET Q1 and the second MOSFET Q2 are turned off, the output voltage of the charge and discharge detection circuit is higher than 1.2V, and the charging voltage is equal to the discharging voltage.

[0053] When the charging and discharging control circuit 3 enters the discharging mode, the lighting effect is switched by the light switching switch S1. The first MOSFET Q1 is turned on, and the second MOSFET Q2 outputs a PWM square wave for dimming. The output voltage of the charging and discharging detection circuit is less than 1.2V, and the charging voltage is equal to the discharging voltage.

[0054] Preferably, the plug end of the DC interface 4 is a cylindrical metal sleeve structure, and its inner wall is provided with an axially extending insulating partition ring 6, which divides the inner cavity of the cylindrical metal sleeve structure into a positive contact area and a negative contact area; the charging contacts of the charging base are elastic pin groups that match the position of the partition ring.

[0055] Specifically, in this embodiment, the plug-in end of the DC interface 4 is a cylindrical metal sleeve structure, exposed on the bottom surface of the battery box, possessing both mechanical plug-in and electrical connection functions. An insulating separator ring 6 is axially arranged on the inner wall of this cylindrical sleeve, dividing the inner cavity into two concentric annular regions, corresponding to the positive and negative contact areas respectively, achieving bipolar conductivity within the same interface. A set of elastic pins is provided in the corresponding charging base slot as charging contacts. The layout of this set of elastic pins precisely matches the insulating separator structure within the cylindrical sleeve: the central elastic pin contacts the central positive area of ​​the sleeve's inner cavity.

[0056] The outer ring elastic pin contacts the negative electrode contact area on the inner wall of the sleeve.

[0057] The elastic pin maintains a certain preload through a spring structure, ensuring stable contact with the metal sleeve during insertion, reducing resistance and electrical sparks, and effectively improving connection reliability and service life.

[0058] This embodiment of the split coaxial structure design not only improves the space utilization of the interface and avoids structural loosening caused by multi-hole connectors, but also enhances the ability to prevent short circuits, misconnections, and interference, making it suitable for use in power modules with high reliability requirements.

[0059] Example 2, refer to Figure 4 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment relates to a charge-discharge integrated battery box structure with optimized heat dissipation, particularly suitable for high-power output or continuous discharge scenarios. Based on Embodiment 1, this embodiment further optimizes the structure and function of the battery pack components and the thermal management system, including:

[0060] Battery pack 2 consists of at least two pouch lithium-ion cells 7 connected in parallel. Each pouch cell is made of high-energy-density material and is electrically connected in parallel via busbars to form a stable power supply unit.

[0061] Thermal conductive layer design: A thermally conductive silicone layer 8 is filled between adjacent soft-pack lithium battery cells 7. This thermally conductive silicone layer 8 has good thermal conductivity and flexibility, which can not only fill the gaps between the cells and enhance the heat conduction efficiency, but also absorb some mechanical stress, thereby improving the overall structural stability and shock resistance.

[0062] Heat dissipation structure design: The battery pack 2 is installed inside the housing 1, and metal heat dissipation fins 9 are provided on the inner side wall of the housing 1. The fin material is preferably aluminum or copper, and they are thermally coupled to the housing 1 by die casting or spot welding.

[0063] One end of these heat dissipation fins is directly attached to the surface of the pouch cell or indirectly connected via a thermal pad, while the other end extends to a ventilation hole 11 on the side of the housing 1. The size and distribution of the ventilation hole 11 are designed according to the hot air convection path to ensure that internal heat can be quickly conducted to the outside of the housing 1, achieving efficient heat dissipation.

[0064] Working principle of Example 2:

[0065] During battery operation (whether charging or discharging), the soft-pack lithium battery cell 7 generates heat due to electrochemical reactions and current flow. This heat is first conducted from the cell surface to the thermally conductive silicone layer 8, which establishes an efficient heat transfer channel between multiple cells, reducing the risk of overheating in a single cell due to thermal lag. Subsequently, the heat is conducted to the attached metal heat sink fins 9; these fins act as a heat conduction pathway, rapidly guiding the heat to the side of the casing 1. Finally, the heat is dissipated into the environment through the ventilation holes 11 via hot air convection. This structure effectively controls cell temperature rise and prevents heat accumulation when external temperatures rise or during high-power battery discharge, thereby improving system stability and cell lifespan.

[0066] In addition, this heat dissipation structure does not rely on an active fan system and has the advantages of passive heat dissipation, zero energy consumption, no noise, and simple structure. It is particularly suitable for intelligent devices with compact structure, limited space, and long-term operation, such as power tools, electric skateboards, and outdoor power modules.

[0067] Example 3, the third embodiment of this utility model, differs from the previous embodiment in that it further discloses a physical button and indicator light structure for controlling the working status display. It achieves dual-color LED status switching control through a mechanical reset structure in conjunction with a toggle switch, improving the user interaction function and ease of use of the battery box, including:

[0068] Spring-reset slider structure: The physical switch button 5 is connected to a movable slider, which is set in a groove inside the housing 1. A reset spring is connected to the tail end of the slider. The spring force keeps the slider in the default reset position.

[0069] The V-shaped groove and toggle lever combination structure: A V-shaped groove is provided at the bottom of the slider, and a toggle lever for a toggle switch is embedded at the bottom of the groove. This toggle lever is the actuator of a dual-channel switch and is fixed on the circuit board of the charge / discharge control circuit 3.

[0070] Dual-color LED structure: The dual-color LED indicator 10 adopts a standard dual-core package, which includes red and green light-emitting chips, each corresponding to two independent power supply lines.

[0071] The two anodes of the dual-color LED indicator 10 are connected to the red and green power supply output terminals of the charge / discharge control circuit 3, respectively, and the common cathode is connected to the circuit ground. The charge / discharge control circuit 3 is equipped with a dual-channel toggle switch, whose two output channels are connected in series with the red / green power supply lines, respectively.

[0072] Working principle of Example 3:

[0073] When the user presses the physical switch button 5, the slider moves axially, and the V-shaped groove pushes the toggle lever to one side, thus flipping the switch state. After releasing the physical switch button 5, the slider returns to its original position under the action of the spring force, while the toggle lever retains its newly switched state, thereby achieving one switch switch with one press. This structure has good mechanical stability and repeatable triggering, and can achieve state switching control without a power supply, making it suitable for low-power or harsh environmental applications.

[0074] When the toggle switch is moved to the first position, the red LED anode circuit is connected, the green LED is disconnected, and the red light is on, indicating that the current state is charging; when moved to the second position, the green LED anode circuit is connected, the red light is disconnected, and the green LED is on, indicating that the current state is discharging.

[0075] The LED status switches synchronously with the toggle switch controlled by the physical button, enabling users to control and intuitively identify the battery box's operating status with a single button.

[0076] Preferably, the charging base has an independently isolated multi-channel DC-DC step-down module inside, with the input of each module connected in parallel to the power interface of the base, and the output connected to the charging contacts of the corresponding slots; the feedback loop of each step-down module is connected to an independent current detection chip.

[0077] Specifically, in this embodiment, the charging base is equipped with multiple independent DC-DC step-down power supply modules. Each module is a complete step-down circuit with input filtering, step-down conversion, output voltage regulation and feedback control functions.

[0078] The input terminals of all step-down modules are connected in parallel to the main power input interface of the base, so as to receive external high-voltage DC power (such as 24V or 48V) in a unified manner, so as to ensure concentrated input power and simplified structure.

[0079] Each DC-DC module's output is connected to a different slot in the base via an independent charging contact, corresponding to one inserted battery compartment. This ensures that each battery compartment receives an independent and stable power supply during charging, avoiding crosstalk or uneven power distribution.

[0080] Each DC-DC module has a set of feedback loops at its output and is connected to an independent current sensing chip (such as INA219 or ACS712). This chip monitors the charging current status in real time and feeds it back to the control pin of the DC-DC module for dynamically adjusting the output voltage or triggering protection logic (such as overcurrent power-off).

[0081] When multiple battery boxes are inserted into the charging base slots, each DC-DC module works independently, automatically adjusting the output voltage and current, and intelligently matching the load according to the charging status of the connected battery boxes, realizing the function of synchronous, independent, and safe parallel charging of multiple battery groups, which greatly improves the scalability and stability of the system.

[0082] Preferably, the bottom contour of the housing 1 is an asymmetrical polygon, and at least one corner is provided with a guide bevel; the slot opening of the charging base has a concave-convex structure that perfectly matches the asymmetrical polygon, so that the battery box can only be inserted in one direction.

[0083] Specifically, in this embodiment, the bottom contour of the battery box is designed as an asymmetrical polygonal structure, preferably a pentagon or hexagon with unequal angles and sides, and a guide ramp is provided at at least one corner. This structure not only has directional identification features, but also facilitates initial alignment during insertion.

[0084] The charging base features a recessed positioning structure inside the slot opening that perfectly matches the contour of the battery compartment's bottom surface. In particular, the guide bevel has a sloping groove to guide the battery compartment into place smoothly.

[0085] Due to the asymmetrical structure and the concave-convex constraint, the battery box can only be inserted into the slot in one direction, avoiding incorrect postures such as reverse insertion or side insertion, ensuring that the DC interface 4 can be axially aligned with the charging contacts and make safe contact, thereby improving the safety of use and mechanical stability.

[0086] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A charge-discharge integrated battery box structure, comprising a housing (1), a battery pack (2) disposed within the housing (1), and a charge-discharge control circuit (3), characterized in that: The housing (1) is provided with a single DC interface (4), and the plug end of the DC interface (4) is exposed on the bottom surface; The DC interface (4) is electrically connected to the charge and discharge control circuit (3), and the charge and discharge control circuit (3) is also connected to the battery pack (2); When the DC interface (4) is connected to an external charging power source, the charge and discharge control circuit (3) enters the charging mode and introduces the external charging current into the battery pack (2); when the DC interface (4) is connected to an external electrical device, the charge and discharge control circuit (3) enters the discharging mode and outputs the electrical energy of the battery pack (2) to the external electrical device. A physical switch button (5) is provided on the side of the housing (1). The physical switch button (5) is mechanically connected to the light switching switch S1 of the charging and discharging control circuit (3). When the physical switch button (5) is pressed, the conduction state of the light switching switch S1 is switched. The bottom contour of the integrated charging and discharging battery box matches the shape of the slot opening of the charging base. When the integrated charging and discharging battery box is inserted into the slot of the charging base, the insertion end of the DC interface (4) forms an axial connection with the charging contact in the slot, so that the integrated charging and discharging battery box is fixed on the charging base and an electrical connection is established. Multiple of the integrated charging and discharging battery boxes can be independently plugged into different slots of the same charging base and charged synchronously through their respective DC interfaces (4).

2. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The charging and discharging control circuit (3) includes a charging management chip U1, a charging and discharging protection chip U2, a main control microcontroller chip U3, a first MOS transistor Q1, and a second MOS transistor Q2; The charging management chip U1 has its pin 3 connected to the positive terminal of the battery pack (2), its pin 4 connected to the charging voltage, its pin 2 connected to the negative terminal of the battery pack (2), and its pin 3 connected to the positive terminal of the battery pack (2). Pin 3 of the main control microcontroller chip U3 is connected to one end of the light switch S1, and the other end of the light switch S1 is grounded. Pin 1 of the main control microcontroller chip U3 is connected to the positive terminal of the battery pack (2). Pin 5 of the main control microcontroller chip U3 is connected to the gate of the first MOS transistor Q1. The drain of the first MOS transistor Q1 is connected to the discharge voltage. Pin 7 of the main control microcontroller chip U3 is connected to the gate of the second MOS transistor Q2. The drain of the second MOS transistor Q2 is connected to the positive terminal of the battery pack (2). The source of the first MOS transistor Q1 is connected to the source of the second MOS transistor Q2. Pin 6 of the main control microcontroller chip U3 is connected to the output voltage of the charge and discharge detection circuit. Pin 1 of the DC interface (4) is connected to the charging voltage, pin 2 of the DC interface (4) is grounded, and pin 3 of the DC interface (4) is connected to the output voltage of the charge and discharge detection circuit.

3. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The DC interface (4) has a cylindrical metal sleeve structure at the plug end, and its inner wall is provided with an axially extending insulating partition ring (6) that divides the inner cavity of the cylindrical metal sleeve structure into a positive contact area and a negative contact area; the charging contacts of the charging base are elastic pin groups that match the position of the partition ring.

4. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The battery pack (2) is composed of at least two soft-pack lithium battery cells (7) connected in parallel, and the soft-pack lithium battery cells (7) are filled with a thermally conductive silicone layer (8); the inner wall of the housing (1) is provided with metal heat dissipation fins (9) that are attached to the surface of the battery cells, and the metal heat dissipation fins (9) extend to the ventilation hole (11) opened at the side end of the housing (1).

5. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The physical switch button (5) is connected to the light switch S1 via a built-in spring reset slider; the bottom of the spring reset slider is provided with a V-shaped groove, and the toggle lever of the light switch S1 is embedded in the V-shaped groove, so that the switch state is switched by a single press of the button.

6. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The outer surface of the housing (1) is embedded with a dual-color LED indicator (10), whose pins are soldered to the circuit board of the charging and discharging control circuit (3); the light switching switch S1 is a dual-channel toggle switch, which controls the red / green power supply lines of the dual-color LED indicator (10) to display the charging / discharging status.

7. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The charging base is equipped with an independent and isolated multi-channel DC-DC step-down module. The input of each module is connected in parallel to the power interface of the base, and the output is connected to the charging contacts of the corresponding slot. The feedback loop of each step-down module is connected to an independent current detection chip.

8. The integrated charging and discharging battery box structure according to claim 1, characterized in that: The bottom contour of the housing (1) is an asymmetrical polygon, and at least one corner is provided with a guide slope; the slot opening of the charging base has a concave-convex structure that perfectly matches the asymmetrical polygon, so that the battery box can only be inserted in one direction.

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