Charging and discharging device and electric connection system

Abstract

The utility model relates to the technical field of electrical elements, in particular to a charging and discharging device and an electrical connection system. The charging and discharging device comprises a power module, a supporting frame, a first shell and a second shell, the power module is provided with a first electric connecting end and a second electric connecting end, the first shell, the supporting frame and the second shell are sequentially arranged in the first direction, the first shell and the second shell are detachably connected to the supporting frame, and the first shell, the second shell and the supporting frame define a containing space. The power module is connected to the supporting frame and located in the containing space. When the charging and discharging device is switched to a charging state, the first electric connection end of the power module is suitable for being electrically connected with the power storage device, and the second electric connection end of the power module is suitable for being electrically connected with a power transmission port of a vehicle; when the charging and discharging device is switched to a discharging state, the first electric connection end of the power module is suitable for being electrically connected with a to-be-powered device, and the second electric connection end of the power module is suitable for being electrically connected with a power transmission port of a vehicle. The device is convenient to assemble and maintain, and the overall cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electrical component technology, and in particular relates to a charging and discharging device and an electrical connection system. Background Technology

[0002] With the widespread use of electronic devices and the continuous increase in the demand for diversified energy utilization, the key role of the integrated charging and discharging machine in many fields is becoming increasingly prominent. Its core function is to achieve efficient charging and discharging conversion. It mainly consists of two core components: a power module and a housing set outside the power module.

[0003] In existing technologies, the housing of a charge / discharge integrated device is often made into a cylindrical shape to accommodate the power module. However, in order to ensure that the power module can be correctly and stably installed in the cylindrical housing, the size, shape, and precision of the housing need to be strictly controlled, resulting in a high overall cost. Utility Model Content

[0004] The technical problem to be solved by this utility model is that, in the prior art, the housing of the integrated charging and discharging machine is often made into a cylindrical shape, resulting in a high overall cost. This utility model provides a charging and discharging device and an electrical connection system.

[0005] To address the aforementioned technical problems, this utility model provides a charging and discharging device, comprising a power module, a support frame, a first housing, and a second housing. The power module has a first electrical connection terminal and a second electrical connection terminal. The charging and discharging device has switchable charging and discharging states. The first housing, the support frame, and the second housing are arranged sequentially along a first direction. Both the first housing and the second housing are detachably connected to the support frame. The first housing, the support frame, and the second housing enclose a receiving space. The power module is connected to the support frame and located within the receiving space.

[0006] When the charging and discharging device switches to the charging state, the first electrical connection terminal of the power module is adapted to be electrically connected to the energy storage device, and the second electrical connection terminal of the power module is adapted to be electrically connected to the power supply port of the vehicle, so that the energy storage device can charge the vehicle.

[0007] When the charging and discharging device switches to the discharging state, the first electrical connection terminal of the power module is adapted to be electrically connected to the device to be used, and the second electrical connection terminal of the power module is adapted to be electrically connected to the power supply port of the vehicle, so that the vehicle can supply power to the device to be used.

[0008] Optionally, at least one of the first housing and the second housing is sealed to the support frame.

[0009] Optionally, the charging and discharging device further includes a seal, at least one of the support frame or the first housing is detachably connected to the seal, and one end of the seal abuts against the first housing and the other end of the seal abuts against the support frame.

[0010] Optionally, the power module is located in the middle of the support frame, and the outer edge of the support frame is provided with an opening groove. The opening groove surrounds the power module, and the seal is embedded in the opening groove.

[0011] Optionally, the charging and discharging device further includes a heat dissipation device for dissipating heat from the power module.

[0012] Optionally, the heat dissipation device includes a cooling fan, which is disposed on the side of the support frame facing the second housing. The second housing has a first end and a second end opposite to each other along a second direction. The first end of the second housing is provided with a first ventilation structure, and the second end of the second housing is provided with a second ventilation structure. The first ventilation structure, the accommodating space, and the second ventilation structure are connected in sequence. The first direction is perpendicular to the second direction.

[0013] Optionally, the charging and discharging device further includes a display component, which is electrically connected to the power module; the display component is used to display the status of the power module.

[0014] Optionally, the charging and discharging device further includes a handle assembly located above the first housing, the support frame, and the second housing, wherein at least one of the first housing and the second housing is detachably connected to the handle assembly;

[0015] The display component is disposed in the accommodating space, and the handle component is provided with a light guide groove corresponding to the display component. The light guide groove is connected to the accommodating space, and the status of the power module displayed by the display component can be exposed through the light guide groove.

[0016] Optionally, the charging and discharging device further includes an operation panel, which is electrically connected to the power module and is disposed on the support frame and located outside the accommodating space.

[0017] According to the charging and discharging device provided in this embodiment, the device can flexibly switch between charging and discharging states to adapt to different application scenarios. For example, in the charging state, it can be used as a charging pile to charge electric vehicles and other vehicles; in the discharging state, it can be used as a mobile power source to power other standby electrical devices. This flexibility gives the device a wider range of applications and higher scalability. By decomposing the charging and discharging device into independent components such as a power module, a support frame, a first housing, and a second housing, a modular design is achieved. This design not only facilitates assembly and maintenance but also reduces the stringent control requirements on the size, shape, and precision of individual components (such as the housing), thereby helping to reduce overall manufacturing costs. Due to the detachable housing design, users can easily disassemble the first and second housings to conveniently access and maintain the internal power module and support frame. This not only improves maintenance efficiency but also facilitates future technological upgrades.

[0018] On the other hand, this utility model embodiment provides an electrical connection system, including an energy storage device, an electrical device, a vehicle, and the above-mentioned charging and discharging device;

[0019] When the charging and discharging device switches to the charging state, the first electrical connection terminal of the power module is electrically connected to the energy storage device, and the second electrical connection terminal of the power module is electrically connected to the power supply port of the vehicle, so that the energy storage device can charge the vehicle.

[0020] When the charging and discharging device switches to the discharging state, the first electrical connection terminal of the power module is electrically connected to the electrical device, and the second electrical connection terminal of the power module is connected to the power supply port of the vehicle, so that the vehicle can supply power to the electrical device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a charging and discharging device provided in an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Exploded view;

[0023] Figure 3 This is a schematic diagram of the connection relationship of an electrical connection system in a charging state according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection relationship of an electrical connection system under discharge state according to an embodiment of the present invention;

[0025] Figure 5 This is an exploded view of a portion of the structure of an electrical connection system provided in an embodiment of this utility model.

[0026] The reference numerals in the accompanying drawings are as follows:

[0027] 100. Charging / discharging device; 200. Charging connector; 300. Discharging connector; 400. Charging gun;

[0028] 1. Power module; 2. Support frame; 3. First housing; 4. Second housing; 5. Seal; 6. Opening slot; 7. Cooling fan; 8. First ventilation structure; 9. Second ventilation structure; 10. Display component; 11. Handle component; 12. Light guide groove; 13. Operation panel. Detailed Implementation

[0029] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] like Figures 1 to 5 As shown, an embodiment of the present invention provides a charging and discharging device 100, including a power module 1, a support frame 2, a first housing 3 and a second housing 4. The power module 1 has a first electrical connection terminal and a second electrical connection terminal. The charging and discharging device 100 has a switchable charging state and a discharging state.

[0031] The first housing 3, the support frame 2, and the second housing 4 are arranged sequentially along the first direction. The first housing 3 and the second housing 4 are detachably connected to the support frame 2, and the first housing 3, the support frame 2, and the second housing 4 enclose an accommodating space. The power module 1 is connected to the support frame 2 and is located in the accommodating space.

[0032] When the charging and discharging device 100 switches to the charging state, the first electrical connection terminal of the power module 1 is adapted to be electrically connected to the energy storage device, and the second electrical connection terminal of the power module 1 is adapted to be electrically connected to the power supply port of the vehicle, so that the energy storage device can charge the vehicle.

[0033] When the charging and discharging device switches to the discharging state, the first electrical connection terminal of the power module 1 is adapted to be electrically connected to the electrical device to be used, and the second electrical connection terminal of the power module 1 is adapted to be connected to the power supply port of the vehicle, so that the vehicle can supply power to the electrical device to be used. In this embodiment, the power module 1 includes a power mainboard, a monitoring board electrically connected to the power mainboard, a magnetic control board, an insulating film connected between the magnetic control board and the power mainboard, a first electrical connector electrically connected to the power mainboard, a second electrical connector electrically connected to the power mainboard, a capacitor electrically connected to the power mainboard, and a temperature sensor for collecting the capacitor temperature. The power mainboard can control the output power of the charging and discharging device 100 during discharge and the power during charging, so that the output or input voltage matches the corresponding charging and discharging equipment. The capacitor is used to store electricity and output electricity when needed to meet the charging and discharging functions of the charging and discharging device 100. The monitoring board is used to collect the remaining electricity of the capacitor in real time to monitor the charging and discharging functions of the charging and discharging device 100. The magnetic control board is used to automatically cut off the load when the circuit where the power mainboard is located is overloaded, thereby achieving the purpose of protecting the load. The insulating film is used to separate the power mainboard and the magnetic control board to avoid the magnetic control board interfering with the normal operation of the power mainboard. The first connector and the second connector are the wiring terminals of the power mainboard, which are electrically connected to external devices (the charging port of a vehicle, a power storage device, or a standby power device; the vehicle refers to a new energy vehicle that can be charged). By integrating components such as the power mainboard, monitoring board, magnetic control board, insulating film, capacitor, temperature sensor, first electrical connector, and second electrical connector into the power module 1, a highly integrated and modular design of the charging and discharging device 100 is achieved. The working principle of the power module 1 is described in existing technologies such as CN115416513A, and will not be elaborated here. Through its unique structural design, the charging and discharging device 100 can flexibly switch between charging and discharging states. Whether it's the energy storage device charging the vehicle or the vehicle supplying power to its electrical components, it can be easily implemented, greatly expanding its application scenarios, meeting diverse energy interaction needs, and improving the practicality and adaptability of the equipment. It can be widely used in various occasions requiring power conversion and transmission, such as emergency power supply and electric vehicle energy replenishment. The detachable connection of the first housing 3, support frame 2, and second housing 4 facilitates the installation, maintenance, and repair of the power module 1. When a component malfunctions, a complex disassembly process is unnecessary; the faulty component can be quickly located and replaced, greatly shortening repair time and costs, and improving the maintainability and availability of the equipment.

[0034] In one embodiment, at least one of the first housing 3 and the second housing 4 is sealed to the support frame 2. In this embodiment, the sealed connection effectively prevents foreign matter such as dust, moisture, and impurities from entering the interior of the charging / discharging device 100. In harsh working environments, such as outdoors, factory workshops, and damp basements, dust and moisture may cause corrosion, short circuits, and other damage to critical components such as the power module 1 and circuit boards. A good seal can significantly reduce this risk, ensure stable electrical performance within the device, extend the device's lifespan, and reduce the frequency and cost of maintenance due to environmental factors.

[0035] In one embodiment, the charging and discharging device 100 further includes a sealing element 5. At least one of the support frame 2 or the first housing 3 is detachably connected to the sealing element 5, with one end of the sealing element 5 abutting against the first housing 3 and the other end of the sealing element 5 abutting against the support frame 2. In this embodiment, by ensuring that both ends of the sealing element 5 are tightly abutting against the first housing 3 and the support frame 2 respectively, external moisture, dust, and other impurities can be effectively prevented from entering the device, improving the device's waterproof and dustproof performance. The detachable connection between the sealing element 5 and the support frame 2 or the first housing 3 facilitates user maintenance or upgrades of the device when needed, reducing maintenance costs and time.

[0036] In one embodiment, the power module 1 is located in the middle of the support frame 2, and the outer edge of the support frame 2 is provided with an opening groove 6, which surrounds the power module 1. The sealing element 5 is embedded in the opening groove 6. In this embodiment, the design of the sealing element 5 being embedded in the opening groove 6 can ensure that the sealing element 5 and the support frame 2 form a tight contact, thereby further improving the sealing performance of the device. It can effectively prevent external moisture, dust and other impurities from entering the device through gaps, protecting the internal power module 1 and other key components from corrosion and damage.

[0037] In one embodiment, the charging and discharging device 100 further includes a heat dissipation device for cooling the power module 1. By equipping it with a dedicated heat dissipation device, the heat generated by the power module 1 during operation can be effectively reduced, preventing it from malfunctioning or experiencing performance degradation due to overheating, thereby ensuring the stable operation of the device.

[0038] In one embodiment, the heat dissipation device includes a cooling fan 7, which is disposed on the side of the support frame 2 facing the second housing 4. The second housing 4 has a first end and a second end opposite to each other along a second direction. The first end of the second housing 4 is provided with a first ventilation structure 8, and the second end of the second housing 4 is provided with a second ventilation structure 9. The first ventilation structure 8, the accommodating space, and the second ventilation structure 9 are sequentially connected; wherein, the first direction is perpendicular to the second direction. In this embodiment, the first direction is the thickness direction (left-right direction) of the first housing 3 and the second housing 4, and the second direction is the length direction (front-back direction) of the first housing 3 and the second housing 4. The support frame 2 is provided with multiple heat sinks, which form a flow guiding structure. The air generated by the fan flows through the flow guiding structure, which can accelerate the heat dissipation of the support frame 2. The cooling fan 7 is disposed on the side of the support frame 2 facing the second housing 4, and together with the first ventilation structure 8 and the second ventilation structure 9 at both ends of the second housing 4, a complete and efficient heat dissipation channel is formed. Air can enter the accommodating space from the first ventilation structure 8, carry away the heat generated by the power module 1, and then be discharged through the second ventilation structure 9. This design allows heat to dissipate quickly from the device, effectively reducing the temperature of the power module 1 and ensuring its stable operation within a suitable operating temperature range. This, in turn, improves the overall performance and reliability of the charging and discharging device 100, reduces the risk of failure due to overheating, and extends the device's lifespan. In other embodiments, the support frame 2 is plate-shaped. The first housing 3 and the support frame 2 form a first space, and the second housing 4 and the support frame 2 form a second space. The first space and the second space are spaced apart from each other, forming an accommodating space. Air convection can be achieved not only by setting two ventilation structures at both ends of the second housing 4, but also by providing ventilation structures at both ends of the first housing 3 along the second direction, facilitating heat dissipation of the power module 1. The active blowing action of the cooling fan 7, combined with the air convection formed by the ventilation structures at both ends, greatly enhances the airflow speed and volume within the accommodating space.

[0039] In one embodiment, the charging / discharging device 100 further includes a display component 10, which is electrically connected to the power module 1; the display component 10 is used to display the status of the power module 1. In this embodiment, the display component 10 can reflect the working status of the power module 1 in real time, such as normal operation, overload, fault, etc. Through different color or brightness changes, the user can intuitively understand the current working status of the power module 1, and thus take appropriate measures in a timely manner. The user can quickly understand the status of the power module 1 through the display component 10 without opening the casing of the charging / discharging device 100 or using professional testing tools.

[0040] In one embodiment, the charging and discharging device 100 further includes a handle assembly 11, which is located above the first housing 3, the support frame 2 and the second housing 4, and at least one of the first housing 3 and the second housing 4 is detachably connected to the handle assembly 11.

[0041] The display component 10 is disposed in the accommodating space, and the handle component 11 is provided with a light guide groove 12 corresponding to the display component 10. The light guide groove 12 connects to the accommodating space, and the status of the power module 1 displayed on the display component 10 can be exposed through the light guide groove 12. In this embodiment, the design of the handle component 11 allows the user to easily lift and move the charging and discharging device 100, making it more convenient and faster whether adjusting its position indoors or charging or discharging outdoors. The light guide groove 12 on the handle component 11 corresponds to the display component 10 in the accommodating space, allowing the light emitted by the display component 10 to be transmitted to the outside of the device through the light guide groove 12, so that the user can clearly see the status indication of the power module 1 when lifting the device.

[0042] In one embodiment, the charging and discharging device 100 further includes an operation panel 13, which is electrically connected to the power module 1. The operation panel 13 is mounted on the support frame 2 and located outside the accommodating space. In this embodiment, the operation panel 13 includes a cover and buttons mounted on the cover. The cover serves to support and protect the device. The operation panel 13 is directly mounted on the support frame 2 and located outside the accommodating space. Users can directly control the charging and discharging device 100 through the operation panel 13 without opening the outer casing of the device or performing complex operations, thus improving the convenience of user operation.

[0043] According to the charging and discharging device 100 provided in this embodiment of the present invention, the charging and discharging device 100 can flexibly switch between charging and discharging states to adapt to different application scenarios. For example, in the charging state, it can be used as a charging pile to charge electric vehicles and other vehicles; in the discharging state, it can be used as a mobile power source to power other standby electrical devices. This flexibility gives the device a wider range of applications and higher scalability. By decomposing the charging and discharging device 100 into independent components such as the power module 1, the support frame 2, the first housing 3, and the second housing 4, a modular design is achieved. This design not only facilitates assembly and maintenance but also reduces the stringent control requirements on the size, shape, and precision of individual components (such as the housing), thereby helping to reduce overall manufacturing costs. Due to the detachable housing design, users can easily disassemble the first housing 3 and the second housing 4 to conveniently access and maintain the internal power module 1 and support frame 2. This not only improves maintenance efficiency but also provides convenience for future technology upgrades.

[0044] In addition, such as Figures 3 to 5 As shown, an embodiment of the present invention provides an electrical connection system, including the energy storage device, electrical components, vehicle, and the charging and discharging device 100 described in the above embodiments.

[0045] When the charging and discharging device 100 switches to the charging state, the first electrical connection terminal of the power module 1 is electrically connected to the energy storage device, and the second electrical connection terminal of the power module 1 is electrically connected to the power supply port of the vehicle, so that the energy storage device can charge the vehicle.

[0046] When the charging / discharging device switches to the discharging state, the first electrical connection terminal of the power module 1 is electrically connected to the electrical device, and the second electrical connection terminal of the power module 1 is connected to the power supply port of the vehicle, so that the vehicle can supply power to the electrical device. In this embodiment, the first electrical connection terminal is electrically connected to the energy storage device through the charging connector 200, and the first electrical connection terminal is electrically connected to the electrical device through the discharging connector 300. The second electrical connection terminal is electrically connected to the power supply port of the vehicle through the charging gun 400. The electrical connection system can realize various energy interaction scenarios. It can both allow the energy storage device to charge the vehicle to meet the vehicle's power replenishment needs, and allow the vehicle to act as a power source to supply power to the electrical device when needed. For example, in scenarios such as outdoor operations and emergency rescue, the vehicle can provide power support for some small electrical devices such as lighting equipment and communication equipment, which greatly improves the flexibility of energy utilization, avoids energy idleness and waste, and allows the electrical energy in the entire system to flow rationally among different power users according to actual needs.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A charge and discharge device characterized by comprising: The charging and discharging device comprises a power module, a support frame, a first shell and a second shell, the power module has a first electric connection end and a second electric connection end, the charging and discharging device has switchable charging state and discharging state; the first shell, the support frame and the second shell are sequentially arranged along a first direction, the first shell and the second shell are detachably connected to the support frame, the first shell, the support frame and the second shell enclose a containing space, the power module is connected to the support frame and located in the containing space; When the charging and discharging device is switched to the charging state, the first electric connection end of the power module is adapted to electrically connect a power storage device, and the second electric connection end of the power module is adapted to connect an electric connection power outlet of a vehicle, so that the power storage device can charge the vehicle; When the charging and discharging device is switched to the discharging state, the first electric connection end of the power module is adapted to electrically connect a standby electrical device, and the second electric connection end of the power module is adapted to connect the electric connection power outlet of the vehicle, so that the vehicle can supply power to the standby electrical device.

2. The charge and discharge device according to claim 1, wherein At least one of the first shell and the second shell is sealingly connected to the support frame.

3. The charge and discharge device according to claim 1, wherein The charging and discharging device further comprises a sealing member, at least one of the support frame or the first shell is detachably connected to the sealing member, one end of the sealing member abuts against the first shell, and the other end of the sealing member abuts against the support frame.

4. The charge and discharge device according to claim 3, wherein The power module is arranged at the middle part of the support frame, an open groove is arranged at the outer edge of the support frame, the open groove surrounds the power module, and the sealing member is embedded into the open groove.

5. The charge and discharge device according to claim 1, wherein The charging and discharging device further comprises a heat dissipation device for heat dissipation of the power module.

6. The charge and discharge device according to claim 5, wherein The heat dissipation device comprises a heat dissipation fan arranged at the side of the support frame facing the second shell, the second shell has a first end and a second end opposite to each other along a second direction, the first end of the second shell is provided with a first ventilation structure, and the second end of the second shell is provided with a second ventilation structure, the first ventilation structure, the containing space and the second ventilation structure are sequentially communicated; wherein the first direction is perpendicular to the second direction.

7. The charge and discharge device according to claim 1, wherein The charging and discharging device further comprises a display assembly electrically connected to the power module; the display assembly is used for displaying the state of the power module.

8. The charge and discharge device according to claim 7, wherein The charging and discharging device further comprises a handle assembly, the handle assembly is located above the first shell, the support frame and the second shell, and at least one of the first shell and the second shell is detachably connected to the handle assembly; The display assembly is arranged in the containing space, the handle assembly is provided with a light guide groove corresponding to the display assembly, the light guide groove communicates with the containing space, and the state of the power module displayed by the display assembly can be exposed to the light guide groove.

9. The charge and discharge device according to claim 1, wherein The charging and discharging device further comprises an operation panel electrically connected to the power module, the operation panel is arranged on the support frame and located outside the containing space.

10. An electrical connection system, characterized by The application relates to a power storage device, an electric device, a vehicle and a charge-discharge device as claimed in any one of claims 1-9. When the charge-discharge device is switched to the charging state, the first electric connection end of the power module is electrically connected to the power storage device, and the second electric connection end of the power module is electrically connected to the power outlet of the vehicle, so that the power storage device can charge the vehicle. When the charge-discharge device is switched to the discharging state, the first electric connection end of the power module is electrically connected to the electric device, and the second electric connection end of the power module is electrically connected to the power outlet of the vehicle, so that the vehicle can supply power to the electric device.

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