A charging and discharging device

Abstract

This utility model relates to the field of charging and discharging technology, specifically, to a charging and discharging device. It includes a housing assembly comprising an outer shell and a receiving cavity; the outer shell encloses the receiving cavity; a charging assembly including a positive charging connector and a negative charging connector connected to the outer shell, and a first switch module, a second switch module, a first conductor, and a second conductor disposed within the receiving cavity; a discharging assembly including a positive discharging connector and a negative discharging connector connected to the outer shell; and a third switch module, a fourth switch module, a third conductor, and a fourth conductor disposed within the receiving cavity; and a first controller disposed within the receiving cavity and connected to the outer shell; the first controller is electrically connected to the first switch module, the second switch module, the third switch module, and the fourth switch module, respectively. This solves the problem that existing charging or discharging devices, when used alone, would result in excessive size.

Description

Technical Field

[0001] This utility model relates to the field of charging and discharging technology, and more specifically, to a charging and discharging device. Background Technology

[0002] Charging and discharging refer to the process of charging (storing energy) and discharging (releasing energy) energy storage devices such as batteries and capacitors; this process enables the storage and utilization of electrical energy. Currently, charging and discharging processes often employ independent charging and discharging devices. While this method achieves the charging and discharging process, the space available for energy storage devices is typically limited, and these devices are often installed on vehicles or similar transportation vehicles. Individual charging and discharging devices are quite large, and to accommodate them, the size of the energy storage device often has to be reduced, which affects its capacity. Utility Model Content

[0003] To address the issue of excessive size resulting from the standalone use of existing charging or discharging devices, this invention provides a charging and discharging device, comprising:

[0004] A housing assembly, the housing assembly including a housing and a receiving cavity; the housing encloses the receiving cavity;

[0005] A charging assembly includes a positive charging connector and a negative charging connector connected to the housing, and a first switch module, a second switch module, a first conductor, and a second conductor disposed within the receiving cavity; the fixed ends of the first switch module and the second switch module are respectively connected to the housing; one contact of the first switch module is connected to one end of the first conductor, and the other contact is connected to the positive charging connector; one contact of the second switch module is connected to one end of the second conductor, and the other contact is connected to the negative charging connector; the first conductor and the second conductor are spaced apart.

[0006] A discharge assembly includes a positive discharge terminal and a negative discharge terminal connected to the housing; and a third switch module, a fourth switch module, a third conductor, and a fourth conductor disposed within the receiving cavity; the fixed ends of the third switch module and the fourth switch module are respectively connected to the housing; one end of the first conductor that is no longer in contact with the first switch module is connected to the positive discharge terminal; one end of the second conductor that is no longer in contact with the second switch module is connected to the negative discharge terminal; one contact of the third switch module is connected to the third conductor, and the other contact is connected to the positive discharge terminal; one contact of the fourth switch module is connected to the fourth conductor, and the other contact is connected to the negative discharge terminal; the third conductor and the fourth conductor are spaced apart.

[0007] A first controller; the first controller is disposed within the receiving cavity and connected to the outer shell; the first controller is electrically connected to the first switch module, the second switch module, the third switch module, and the fourth switch module respectively.

[0008] In some embodiments, the first controller is a microcontroller controller, and the first switch module, the second switch module, the third switch module, and the fourth switch module are relays.

[0009] In some embodiments, the charging assembly further includes a current sensor; the fixed end of the current sensor is connected to the housing; the sensing end of the current sensor passes through the first conductor; and the current sensor is electrically connected to the first controller.

[0010] In some embodiments, the charging assembly further includes a manual maintenance switch; the manual maintenance switch is connected in series with the first conductor.

[0011] In some embodiments, the discharge assembly further includes a current output module; the current output module includes a positive current output connector and a negative current output connector; the insulating end of the positive current output connector and the insulating end of the negative current output connector are respectively connected to the housing; the conductive end of the positive current output connector is electrically connected to the contact of the third switch module away from the third conductor; the negative current output connector is electrically connected to the contact of the fourth switch module away from the fourth conductor.

[0012] In some embodiments, the discharge assembly further includes a pre-charge protection unit; the pre-charge protection unit includes a fifth switch module and a pre-charge resistor; the fifth switch module is disposed within the receiving cavity; the fixed end of the fifth switch module is connected to the housing; one contact of the fifth switch module is electrically connected to one end of the pre-charge resistor, and the other contact is electrically connected to the third conductor; the end of the pre-charge resistor away from the fifth switch module is electrically connected to the third conductor; the fifth switch module is connected in series with the pre-charge resistor and in parallel with the third switch module; the fifth switch module is electrically connected to the controller.

[0013] In some embodiments, the discharge assembly further includes a cooling power transmission unit; the cooling power transmission unit includes a sixth switch module, a fuse, and a cooling connector; the sixth switch module and the fuse are located within the receiving cavity; the fixed end of the sixth switch module is connected to the housing; one contact of the sixth switch module is electrically connected to the third conductor, and the other contact is electrically connected to one end of the fuse; the end of the fuse that is no longer in contact with the sixth switch module is electrically connected to the cooling connector; the cooling connector is electrically connected to the fourth conductor; the insulating end of the cooling connector is connected to the housing; and the sixth switch module is electrically connected to the controller.

[0014] In some embodiments, the housing assembly further includes a vent valve that extends from one end face of the housing along the thickness direction of the housing into the receiving cavity.

[0015] In some embodiments, a second controller is further disposed within the receiving cavity; the second controller is connected to the outer shell.

[0016] In some embodiments, the housing is provided with a first communication interface and a second communication interface; the first communication interface is electrically connected to the first controller; and the second communication interface is electrically connected to the second controller.

[0017] To address the problem that existing charging or discharging devices are too bulky when used alone, this invention has the following advantages:

[0018] By setting up charging and discharging components within the housing assembly and rationally arranging the electrical components of the charging and discharging components, the charging and discharging components can be compacted within the housing assembly, thereby reducing their size and solving the problem of excessive size when existing charging or discharging devices are used alone. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a charging and discharging device.

[0020] Figure 2A schematic diagram of the internal three-dimensional structure of a charging and discharging device;

[0021] Figure 3 This is a schematic diagram of the internal plan of a charging and discharging device.

[0022] Figure 4 This is a schematic diagram of the electrical connections of a charging and discharging device in some embodiments;

[0023] In the diagram: 01, Charging component; 11, Positive charging connector; 12, Negative charging connector; 13, First conductor; 14, Second conductor; 15, First switch module; 16, Second switch module; 17, Manual maintenance switch; 18, Current sensor; 02, Discharging component; 21, Positive discharge connector; 22, Negative discharge connector; 23, Third switch module; 24, Fourth switch module; 25, Third conductor; 26, Fourth conductor; 27, Current output module; 271, Positive current output connector; 27 2. Current output negative connector; 28. Precharge protection unit; 281. Fifth switch module; 282. Precharge resistor; 29. ​​Cooling power transmission unit; 291. Sixth switch module; 292. Fuse; 293. Cooling connector; 30. First controller; 31. Second controller; 32. First communication interface; 33. Second communication interface; 34. Energy storage device; 35. Electrical load; 36. Charging pile; 37. Cooler; 04. Housing assembly; 41. Outer shell; 42. Receiving cavity; 43. Vent valve. Detailed Implementation

[0024] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0025] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0026] Charging and discharging refers to the process of charging (storing energy) and discharging (releasing energy) energy storage devices 34 such as batteries and capacitors; this process enables the storage and utilization of electrical energy. In existing charging and discharging processes, separate charging and discharging devices are often used to charge and discharge the energy storage device 34. While this method can achieve the charging and discharging process of the energy storage device 34, the space available for its installation is usually limited, and often the energy storage device 34 is installed on vehicles such as cars. Individual charging and discharging devices are relatively large, and to accommodate them, the size of the energy storage device 34 often has to be reduced, which affects its energy storage capacity. To solve this problem, this utility model provides a charging and discharging device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it may include:

[0027] Housing assembly 04, the housing assembly 04 includes an outer shell 41 and a receiving cavity 42; the outer shell 41 surrounds the receiving cavity 42;

[0028] The charging assembly 01 includes a positive charging connector 11 and a negative charging connector 12 connected to the housing 41, and a first switch module 15, a second switch module 16, a first conductor 13, and a second conductor 14 disposed within the receiving cavity 42. The fixed ends of the first switch module 15 and the second switch module 16 are respectively connected to the housing 41. One contact of the first switch module 15 is connected to one end of the first conductor 13, and the other contact is connected to the positive charging connector 11. One contact of the second switch module 16 is connected to one end of the second conductor 14, and the other contact is connected to the negative charging connector 12. The first conductor 13 and the second conductor 14 are spaced apart.

[0029] The discharge assembly 02 includes a positive discharge terminal 21 and a negative discharge terminal 22 connected to the housing 41; and a third switch module 23, a fourth switch module 24, a third conductor 25, and a fourth conductor 26 disposed within the receiving cavity 42. The fixed ends of the third switch module 23 and the fourth switch module 24 are respectively connected to the housing 41. One end of the first conductor 13, which is no longer in contact with the first switch module 15, is connected to the positive discharge terminal 21. One end of the second conductor 14, which is no longer in contact with the second switch module 16, is connected to the negative discharge terminal 22. One contact of the third switch module 23 is connected to the third conductor 25, and the other contact is connected to the positive discharge terminal 21. One contact of the fourth switch module 24 is connected to the fourth conductor 26, and the other contact is connected to the negative discharge terminal 22. The third conductor 25 and the fourth conductor 26 are spaced apart.

[0030] A first controller 30 is disposed within the receiving cavity 42 and connected to the outer shell 41; the first controller 30 is electrically connected to the first switch module 15, the second switch module 16, the third switch module 23, and the fourth switch module 24 respectively.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the charging and discharging device includes: a housing assembly 04, which includes a housing 41 and a receiving cavity 42; the housing 41 surrounds the receiving cavity 42; in this embodiment, the housing 41 may be made of an insulating material or a metal material connected to a ground wire. In this embodiment, such as... Figure 1 , Figure 2 As shown, the outer casing 41 is schematically shown as a rectangular casing 41. Those skilled in the art can imagine that one side of the rectangular casing 41 can be opened or closed to facilitate the detection of electrical components within the receiving cavity 42. The charging assembly 01 includes a positive charging connector 11 and a negative charging connector 12 connected to the outer casing 41, and a first conductor 13, a second conductor 14, a first switch module 15, and a second switch module 16 disposed within the receiving cavity 42. In this embodiment, the insulating portions of the positive charging connector 11 and the negative charging connector 12 are connected to the outer casing 41, preferably in a detachable manner. The fixed ends of the first switch module 15 and the second switch module 16 are respectively connected to the outer casing 41. One contact of the first switch module 15 is connected to one end of the first conductor 13, and the other contact is connected to the positive charging connector 11. In this embodiment, the first switch module 15 includes a moving contact and a stationary contact. When the first conductor 13 contacts the stationary contact of the first switch module 15, the charging positive terminal connector 11 is electrically connected to the moving contact of the first switch module 15. It can be imagined that, to facilitate the connection between the first switch module 15 and the charging positive terminal connector 11, a wire of a certain length can be connected between the charging positive terminal connector 11 and the moving contact of the first switch module 15. This wire connects the first switch module 15 and the charging positive terminal connector 11. One contact of the second switch module 16 is connected to one end of the second conductor 14, and the other contact is connected to the charging negative terminal connector 12. The first conductor 13 and the second conductor 14 are spaced apart. The connection method between the second switch module 16, the second conductor 14, and the charging negative terminal connector 12 is similar to the connection method between the first switch module 15, the first conductor 13, and the charging positive terminal connector 11, and will not be described in detail here.

[0032] The discharge assembly 02 includes a positive discharge terminal 21 and a negative discharge terminal 22 connected to the housing 41. In this embodiment, the insulating portions of the positive discharge terminal 21 and the negative discharge terminal 22 are connected to the housing 41. This connection can be a fixed connection or a detachable connection. A third switch module 23, a fourth switch module 24, a third conductor 25, and a fourth conductor 26 are disposed within the receiving cavity 42. The fixed ends of the third switch module 23 and the fourth switch module 24 are respectively connected to the housing 41. One end of the first conductor 13, which is no longer in contact with the first switch module 15, is connected to the positive discharge terminal 21. 1. Connection: The end of the second conductor 14 that is no longer in contact with the second switch module 16 is connected to the discharge negative terminal 22; one contact of the third switch module 23 is connected to the third conductor 25, and the other contact is connected to the discharge positive terminal 21; In this embodiment, the connection method between the first switch module 15, the third switch module 23 and the first conductor 13, and the connection method between the second switch module 16, the fourth switch module 24 and the second conductor 14 can be understood as metal-to-metal contact; one contact of the fourth switch module 24 is connected to the fourth conductor 26, and the other contact is connected to the discharge negative terminal 22; the third conductor 25 and the fourth conductor 26 are spaced apart. In this embodiment, the first conductor 13 and the second conductor 14 can be made of copper busbars;

[0033] A first controller 30 is disposed within the receiving cavity 42 and connected to the outer shell 41. The first controller 30 is electrically connected to the first switch module 15, the second switch module 16, the third switch module 23, and the fourth switch module 24, respectively. The connection between the first controller 30 and the outer shell 41 is preferably a detachable connection. In this embodiment, the first controller 30 is used to control the power supply or power de-energization of the first switch module 15, the second switch module 16, the third switch module 23, and the fourth switch module 24.

[0034] In this embodiment, by setting the charging component 01 and the discharging component 02 inside the housing component 04 and rationally arranging the electrical components of the charging component 01 and the discharging component 02, the charging component 01 and the discharging component 02 are compacted inside the housing component 04, thereby reducing the volume of the charging component 01 and the discharging component 02 and solving the problem that the existing charging device or discharging device would be too large when used alone. Furthermore, by arranging a charging component 01, a discharging component 02, and a first controller 30 within the housing assembly 04, the charging component 01 includes a first switch module 15, a second switch module 16, a first conductor 13, and a second conductor 14; the discharging component 02 includes a third switch module 23, a fourth switch module 24, a third conductor 25, and a fourth conductor 26. The charging function is achieved by controlling the opening of the first switch module 15 and the second switch module 16 through the first controller 30, and the discharging function is achieved by opening the third switch module 23 and the fourth switch module 24. This design offers high safety, and because the charging and discharging device simultaneously possesses both charging and discharging functions, it is more compact and smaller in size compared to devices that only have charging or discharging functions.

[0035] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 As shown, the first controller 30 is a microcontroller controller, and the first switch module 15, the second switch module 16, the third switch module 23, and the fourth switch module 24 are relays.

[0036] In this embodiment, as Figure 2 , Figure 3 , Figure 4 As shown, in this embodiment, the first controller 30 is a microcontroller controller, and the first switch module 15, the second switch module 16, the third switch module 23, and the fourth switch module 24 are relays. Those skilled in the art will know that the microcontroller controller can realize the energization and de-energization of the first conductor 13, the second conductor 14, the third conductor 25, and the fourth conductor 26 by controlling the closing and opening of the moving and stationary contacts of each relay.

[0037] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 As shown, the charging assembly 01 also includes a current sensor 18; the fixed end of the current sensor 18 is connected to the housing 41; the sensing end of the current sensor 18 is connected to the first conductor 13; and the current sensor 18 is electrically connected to the first controller 30.

[0038] In this embodiment, as Figure 2 , Figure 3 , Figure 4As shown, the charging assembly 01 also includes a current sensor 18; the fixed end of the current sensor 18 is connected to the housing 41; the sensing end of the current sensor 18 is connected to the first conductor 13; the current sensor 18 is electrically connected to the first controller 30; in this embodiment, the current sensor 18 detects the magnitude of the current and uploads the signal to the first controller 30, so that the first controller 30 can determine the magnitude of the current in the first conductor 13.

[0039] In some embodiments, such as Figure 3 As shown, the charging assembly 01 also includes a manual maintenance switch 17; the manual maintenance switch 17 is connected in series with the first conductor 13.

[0040] In this embodiment, as Figure 3 As shown, the charging assembly 01 also includes a manual maintenance switch 17; the manual maintenance switch 17 is connected in series with the first conductor 13; in this embodiment, the connection between the manual maintenance switch 17 and the first conductor 13 can be understood as the first conductor 13 being disconnected, and the disconnected part of the manual maintenance switch 17 and the first conductor 13 being connected, so that the current of the first conductor 13 can flow through the manual maintenance switch 17; when it is necessary to detect the electrical components in the receiving cavity 42, the manual maintenance switch 17 can be removed, thereby breaking the circuit of the first conductor 13 and playing a protective role.

[0041] In some embodiments, such as Figure 1 , Figure 4 As shown, the discharge assembly 02 further includes a current output module 27; the current output module 27 includes a positive current output connector 271 and a negative current output connector 272; the insulating ends of the positive current output connector 271 and the negative current output connector 272 are respectively connected to the housing 41; the conductive end of the positive current output connector 271 is electrically connected to the contact of the third switch module 23 away from the third conductor 25; the negative current output connector 272 is electrically connected to the contact of the fourth switch module 24 away from the fourth conductor 26.

[0042] In this embodiment, as Figure 1 , Figure 4As shown, the discharge assembly 02 also includes a current output module 27; the current output module 27 includes a positive current output connector 271 and a negative current output connector 272; in this embodiment, the current output module 27 is electrically connected to an external load; and the insulating ends of the positive current output connector 271 and the negative current output connector 272 are respectively connected to the housing 41; the conductive end of the positive current output connector 271 is electrically connected to the contact of the third switch module 23 away from the third conductor 25; the negative current output connector 272 is electrically connected to the contact of the fourth switch module 24 away from the fourth conductor 26; in this embodiment, by closing the third switch module 23 and the fourth switch module 24, the third conductor 25 and the fourth conductor 26 can be energized, thereby achieving discharge.

[0043] In some embodiments, such as Figure 3 , Figure 4 As shown, the discharge assembly 02 further includes a pre-charge protection unit 28; the pre-charge protection unit 28 includes a fifth switch module 281 and a pre-charge resistor 282; the fifth switch module 281 is disposed within the receiving cavity 42; the fixed end of the fifth switch module 281 is connected to the outer shell 41; one contact of the fifth switch module 281 is electrically connected to one end of the pre-charge resistor 282, and the other contact is electrically connected to the third conductor 25; the end of the pre-charge resistor 282 away from the fifth switch module 281 is electrically connected to the third conductor 25; the fifth switch module 281 is connected in series with the pre-charge resistor and in parallel with the third switch module 23; the fifth switch module 281 is electrically connected to the controller.

[0044] In this embodiment, as Figure 3 , Figure 4 As shown, the discharge assembly 02 also includes a pre-charge protection unit 28; the pre-charge protection unit 28 includes a fifth switch module 281 and a pre-charge resistor 282; the fifth switch module 281 is disposed within the receiving cavity 42; the fixed end of the fifth switch module 281 is connected to the outer shell 41; one contact of the fifth switch module 281 is electrically connected to one end of the pre-charge resistor 282, and the other contact is electrically connected to the third conductor 25; in this embodiment, the fifth switch module 281 can be a relay, the moving contact or stationary contact of the relay is electrically connected to the pre-charge resistor 282, and the stationary contact or moving contact of the relay is electrically connected to the third conductor 25. The third conductor 25 is electrically connected; the end of the pre-charge resistor 282 away from the fifth switch module 281 is electrically connected to the third conductor 25; the fifth switch module 281 is connected in series with the pre-charge resistor and in parallel with the third switch module 23; the fifth switch module 281 is electrically connected to the controller. In this embodiment, before energizing the third conductor 25, the controller can first control the moving and stationary contacts of the fifth switch module 281 to close, thereby reducing the voltage across the third switch module 23. Then, the controller controls the moving and stationary contacts of the third switch module 23 to close, thereby energizing the third conductor 25.

[0045] In some embodiments, such as Figure 3 , Figure 4 As shown, the discharge assembly 02 further includes a cooling power transmission unit 29; the cooling power transmission unit 29 includes a sixth switch module 291, a fuse 292, and a cooling connector 293; the sixth switch module 291 and the fuse 292 are located within the receiving cavity 42; the fixed end of the sixth switch module 291 is connected to the outer casing 41; one contact of the sixth switch module 291 is electrically connected to the third conductor 25, and the other contact is electrically connected to one end of the fuse 292; the end of the fuse 292 that is no longer in contact with the sixth switch module 291 is electrically connected to the cooling connector 293; the cooling connector 293 is electrically connected to the fourth conductor 26; the insulating end of the cooling connector 293 is connected to the outer casing 41; the sixth switch module 291 is electrically connected to the controller.

[0046] In this embodiment, as Figure 3 , Figure 4 As shown, the discharge assembly 02 also includes a cooling power transmission unit 29; the cooling power transmission unit 29 includes a sixth switch module 291, a fuse 292, and a cooling connector 293; in this embodiment, the sixth switch module 291 can be a relay, and the sixth switch module 291 and the fuse 292 are located in the receiving cavity 42; the fixed end of the sixth switch module 291 is connected to the outer shell 41; one contact of the sixth switch module 291 is electrically connected to the third conductor 25, and the other contact is electrically connected to one end of the fuse 292; the end of the fuse 292 that is no longer in contact with the sixth switch module 291 is electrically connected to the cooling connector 293; the cooling connector 293 is electrically connected to the fourth conductor 26; the insulating end of the cooling connector 293 is connected to the outer shell 41; the sixth switch module 291 is electrically connected to the controller; in this embodiment, the cooling connector 293 is also electrically connected to an external cooler 37, which can work after being energized to cool the energy storage device 34.

[0047] In some embodiments, such as Figure 1 , Figure 2 As shown, the housing assembly 04 also includes a vent valve 43; the vent valve 43 extends from one end face of the housing 41 along the thickness direction of the housing 41 into the receiving cavity 42.

[0048] In this embodiment, as Figure 1 , Figure 2 As shown, the housing assembly 04 also includes a vent valve 43; the vent valve 43 extends from one end face of the housing 41 along the thickness direction of the housing 41 into the receiving cavity 42. In this embodiment, the vent valve 43 can exhaust the high-temperature gas in the receiving cavity 42 to achieve heat dissipation inside the housing 41.

[0049] In some embodiments, such as Figure 3 , Figure 4 As shown, a second controller 31 is also provided inside the receiving cavity 42; the second controller 31 is connected to the outer shell 41.

[0050] In this embodiment, as Figure 3 , Figure 4 As shown, a second controller 31 is also provided inside the receiving cavity 42. The second controller 31 is connected to the outer shell 41. In this embodiment, the second controller 31 is a microcontroller controller, which includes a GPS positioning module (not shown in the figure), a Wi-Fi antenna module (not shown in the figure), a background monitoring module for the power data of the energy storage device 34, etc. The second controller 31 can interact with the battery swapping station via CAN communication. In this embodiment, the role and function of the second controller 31 in this utility model, as well as the process of communicating with the outside, are all implementations of conventional technical means in the art, and will not be described in detail here. In this embodiment, those skilled in the art will know that the first controller 31 and the second controller 32, as microcontroller controllers, include not only relevant electronic components, but also corresponding control programs (which those skilled in the art can know, and will not be described in detail here).

[0051] In some embodiments, such as Figure 2 As shown, the outer casing 41 is provided with a first communication interface 32 and a second communication interface 33; the first communication interface 32 is electrically connected to the first controller 30; the second communication interface 33 is electrically connected to the second controller 31.

[0052] In this embodiment, as Figure 2 As shown, the outer casing 41 is provided with a first communication interface 32 and a second communication interface 33; the first communication interface 32 is electrically connected to the first controller 30; the second communication interface 33 is electrically connected to the second controller 31. In this embodiment, the first controller 30 can transmit data with the outside through the first communication interface 32, and the second controller 31 can transmit data with the outside through the second communication interface 33.

[0053] In the above, the number of charging positive terminal 11, charging negative terminal 12, first switch module 15, second switch module 16, manual maintenance switch 17, current sensor 18, discharge positive terminal 21, discharge negative terminal 22, third switch module 23, fourth switch module 24, current output module 27, pre-charge protection unit 28, and cooling power transmission unit 29 can be set according to the corresponding number of first conductor 13, second conductor 14, third conductor 25, and fourth conductor 26, and is not limited to the number shown in the figure; the energy storage device can be a battery or a capacitor; the cooler 37 can be a water cooler or an air cooler, wherein the water cooler and the air cooler are conventional devices used in the art for cooling energy storage devices, and will not be described in detail here.

[0054] The working principle of this utility model is as follows:

[0055] When charging the energy storage device, the controller disconnects the moving and stationary contacts of the third switch module 23 and the fourth switch module 24; the charging positive terminal 11 and the charging negative terminal 12 are connected to the charging pile 36, and the discharging positive terminal 21 and the discharging negative terminal 22 are connected to the energy storage device. The controller controls the moving and stationary contacts of the first switch module 15 to close and controls the moving and stationary contacts of the second switch module 16 to close. The first conductor 13 and the second conductor 14 are energized to form a closed circuit, and then the energy storage device is charged.

[0056] When the energy storage device discharges, the controller disconnects the moving and stationary contacts of the first switch module 15 and the second switch module 16. The controller then first controls the moving and stationary contacts of the fifth switch module 281 to close, thereby reducing the voltage across the third switch module 23. Subsequently, the controller controls the moving and stationary contacts of the third switch module 23 to close, and controls the moving and stationary contacts of the fourth switch module 24 to close. The energy storage device then supplies power to the electrical load 35 through the third conductor 25 and the fourth conductor 26.

[0057] During the charging and discharging process of the energy storage device 34, the controller turns on the sixth switch module 291, causing the moving contact of the sixth switch module 291 to close with the stationary contact. The energy storage device 34 supplies power to the cooler 37 through the positive and negative terminals of the cooling connector 293, and the cooler cools the energy storage device 34.

[0058] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A charge and discharge device characterized by comprising: The charging and discharging device includes: A housing assembly, the housing assembly including a housing and a receiving cavity; the housing encloses the receiving cavity; A charging assembly includes a positive charging connector and a negative charging connector connected to the housing, and a first switch module, a second switch module, a first conductor, and a second conductor disposed within the receiving cavity; the fixed ends of the first switch module and the second switch module are respectively connected to the housing; one contact of the first switch module is connected to one end of the first conductor, and the other contact is connected to the positive charging connector; one contact of the second switch module is connected to one end of the second conductor, and the other contact is connected to the negative charging connector; the first conductor and the second conductor are spaced apart. A discharge assembly includes a positive discharge terminal and a negative discharge terminal connected to the housing; and a third switch module, a fourth switch module, a third conductor, and a fourth conductor disposed within the receiving cavity; the fixed ends of the third switch module and the fourth switch module are respectively connected to the housing; one end of the first conductor that is no longer in contact with the first switch module is connected to the positive discharge terminal; one end of the second conductor that is no longer in contact with the second switch module is connected to the negative discharge terminal; one contact of the third switch module is connected to the third conductor, and the other contact is connected to the positive discharge terminal; one contact of the fourth switch module is connected to the fourth conductor, and the other contact is connected to the negative discharge terminal; the third conductor and the fourth conductor are spaced apart. A first controller; the first controller is disposed within the receiving cavity and connected to the outer shell; the first controller is electrically connected to the first switch module, the second switch module, the third switch module, and the fourth switch module respectively.

2. The charging and discharging device according to claim 1, wherein The first controller is a microcontroller controller, and the first switch module, the second switch module, the third switch module, and the fourth switch module are relays.

3. The charging and discharging device according to claim 1, wherein The charging assembly further includes a current sensor; the fixed end of the current sensor is connected to the housing; the sensing end of the current sensor is connected to the first conductor; and the current sensor is electrically connected to the first controller.

4. The charging and discharging device according to claim 1, wherein The charging assembly also includes a manual maintenance switch; the manual maintenance switch is connected in series with the first conductor.

5. The charging and discharging device according to claim 1, wherein The discharge assembly further includes a current output module; the current output module includes a positive current output connector and a negative current output connector; the insulating end of the positive current output connector and the insulating end of the negative current output connector are respectively connected to the housing; the conductive end of the positive current output connector is electrically connected to the contact of the third switch module away from the third conductor; the negative current output connector is electrically connected to the contact of the fourth switch module away from the fourth conductor.

6. The charging and discharging device according to claim 1, wherein The discharge assembly further includes a pre-charge protection unit; the pre-charge protection unit includes a fifth switch module and a pre-charge resistor; the fifth switch module is disposed within the receiving cavity; the fixed end of the fifth switch module is connected to the outer shell; one contact of the fifth switch module is electrically connected to one end of the pre-charge resistor, and the other contact is electrically connected to the third conductor; the end of the pre-charge resistor away from the fifth switch module is electrically connected to the third conductor; the fifth switch module is connected in series with the pre-charge resistor and in parallel with the third switch module; the fifth switch module is electrically connected to the controller.

7. The charging and discharging device according to claim 1, wherein The discharge assembly further includes a cooling power transmission unit; the cooling power transmission unit includes a sixth switch module, a fuse, and a cooling connector; the sixth switch module and the fuse are located within the receiving cavity; the fixed end of the sixth switch module is connected to the housing; one contact of the sixth switch module is electrically connected to the third conductor, and the other contact is electrically connected to one end of the fuse; the end of the fuse that is no longer in contact with the sixth switch module is electrically connected to the cooling connector; the cooling connector is electrically connected to the fourth conductor; the insulating end of the cooling connector is connected to the housing; and the sixth switch module is electrically connected to the controller.

8. The charging and discharging device according to claim 1, characterized in that, The housing assembly also includes a vent valve; the vent valve extends from one end face of the housing along the thickness direction of the housing into the receiving cavity.

9. A charging and discharging device according to claim 1, characterized in that, A second controller is also provided inside the cavity; the second controller is connected to the outer shell.

10. The charging and discharging device according to claim 9, wherein The outer casing is provided with a first communication interface and a second communication interface; the first communication interface is electrically connected to the first controller; the second communication interface is electrically connected to the second controller.

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