A relay, fully immersed power module and charging system

Abstract

The application discloses a relay, a fully-immersed power module and a charging system. The relay comprises a shell, a to-be-sucked accessory, a main suction assembly and an auxiliary suction assembly. The shell is provided with an output terminal and an input terminal. The to-be-sucked accessory is connected with the shell and extends along a first direction. The main suction assembly is arranged in the shell and is used for sucking the to-be-sucked accessory. When the main suction assembly sucks the to-be-sucked accessory, the output terminal and the input terminal are conducted. The auxiliary suction assembly is arranged in the shell and is used for providing an additional driving force for the main suction assembly to suck or disconnect the to-be-sucked accessory. The relay provided by the application can reduce the time consumption of relay attraction or disconnection in use, and the relay attraction or disconnection is more smooth.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a relay, a fully immersive power module, and a charging system. Background Technology

[0002] Relays are essential components in the power modules of electric vehicles. In common air-cooled power modules, relays are directly exposed to the air and can effectively engage or disengage by relying on the attraction of the coil core and the rebound force of the spring. Changes in air temperature do not affect the attraction of the coil core and the rebound force of the spring. Relays operating in the air can control the engagement or disengagement time to the millisecond level within a temperature range of -45℃ to +75℃.

[0003] In fully submerged power modules, the coolant is often made of mineral oil, fluorinated liquid, or silicone oil with high insulation and high thermal conductivity. Its kinematic viscosity is much higher than that of air, especially under different temperature changes, the kinematic viscosity can change by more than three orders of magnitude. When the relay is completely submerged in this type of coolant, the resistance of the coolant itself is large, and the time for the relay to turn on or off will increase to the level of tens of milliseconds. Especially at temperatures of -40°C and below, the time for the relay to turn on or off will increase to the level of hundreds of milliseconds, which seriously affects the time requirements of the power module in terms of fast response. Moreover, if the relay does not turn on or off smoothly, it will affect the reliability of the power module. Utility Model Content

[0004] The main objective of this application is to provide a relay, a fully immersive power module, and a charging system, which aims to solve the problem of long turn-on or turn-off times for relays in fully immersive power modules.

[0005] To achieve the above objectives, this application provides a relay comprising a housing, a target element, a main adsorption assembly, and an auxiliary adsorption assembly. The housing is provided with an output terminal and an input terminal. The target element is connected to the housing and extends along a first direction. The main adsorption assembly is disposed within the housing to adsorb the target element, wherein when the main adsorption assembly adsorbs the target element, the output terminal and the input terminal are connected. The auxiliary adsorption assembly is disposed within the housing and is used to provide additional driving force for the main adsorption assembly to adsorb or disconnect the target element.

[0006] Optionally, the main adsorption assembly includes a first contact, a second contact, and a main coil; the housing is provided with an output terminal and an input terminal; the object to be adsorbed is connected to the housing and extends along a first direction; the first contact is disposed inside the housing and located on one side of the object to be adsorbed; the second contact is disposed on the object to be adsorbed, wherein the second contact is electrically connected to either the output terminal or the input terminal, and the first contact is electrically connected to the other of the output terminal or the input terminal; the main coil and the first contact are disposed on the same side of the object to be adsorbed to adsorb the object, wherein when the main coil adsorbs the object to be adsorbed, the second contact contacts and conducts electricity with the first contact; the auxiliary adsorption assembly includes an auxiliary coil and a magnetic pole, the auxiliary coil is disposed on one side of the object to be adsorbed; the magnetic pole is disposed on the object to be adsorbed and corresponds to the auxiliary coil, wherein the auxiliary coil adsorbs or repels the magnetic pole to provide additional driving force for the main coil to adsorb or disconnect the object to be adsorbed.

[0007] Optionally, the auxiliary coil and the main coil are located on the same side of the object to be attracted and are spaced apart in the first direction; wherein, the first contact is located between the auxiliary coil and the main coil; in the first direction, both the main coil and the auxiliary coil are located on the side of the connection area between the object to be attracted and the housing, close to the magnetic pole.

[0008] Optionally, the adsorbent includes a rotating segment, a copper foil segment, and a connecting segment connected sequentially in the first direction; wherein the rotating segment is rotatably connected to the housing, and the copper foil segment is adsorbed or disconnected from the main coil; the second contact is disposed at the end of the connecting segment away from the copper foil segment; and the magnetic pole is disposed at the end of the second contact away from the connecting segment.

[0009] Optionally, the second contact is connected to the end of the object to be attracted; the relay further includes a slide rail and a sliding part, the slide rail being disposed inside the housing; the sliding part is rotatably connected to the end of the second contact away from the object to be attracted and slides in cooperation with the slide rail; wherein, the sliding direction of the sliding part coincides with the axial direction of the magnetic core of the auxiliary coil, and the magnetic pole is disposed at the end of the sliding part facing the auxiliary coil.

[0010] Optionally, the relay further includes a spring that connects the housing to the object to be attracted; wherein, in the first direction, the spring is located on the side opposite to the magnetic pole in the connection area between the object to be attracted and the housing; when the main coil attracts the object to be attracted, the spring is stretched.

[0011] Optionally, the first contact is a copper sheet, and the second contact is a spring.

[0012] Optionally, the sliding part has a groove on its outer periphery, and the end of the second contact member passes through the groove and is rotatably connected to the sliding part by a pin; wherein the sliding part is made of insulating material.

[0013] Furthermore, to achieve the above objectives, this application also provides a fully immersion power module, which includes a sealed housing, a PCBA assembly, and the aforementioned relay. The sealed housing has a liquid inlet port and a liquid outlet port, with the liquid inlet port located below the liquid outlet port in the direction of gravity. The PCBA assembly is disposed inside the sealed housing, wherein the PCBA assembly is immersed in insulating coolant inside the sealed housing. The relay is mounted on the PCBA assembly.

[0014] Furthermore, to achieve the above objectives, this application also provides a fully immersive charging system. This charging system includes at least one charging interface, a power distribution device, at least two of the aforementioned fully immersive power modules, and a controller. The power distribution device is electrically connected to each of the charging interfaces. At least two fully immersive power modules are electrically connected to the power distribution device. The fully immersive power modules are used to convert AC power from the power grid into DC power and provide it to the charging interfaces through the power distribution device. The controller is electrically connected to the power distribution device and is used to acquire the required power of each of the charging interfaces. Based on the connection relationship of the controllable switches in the power distribution device and the required power, the controller sends a scheduling command to the power distribution device. The power distribution device responds to the scheduling command by controlling the opening or closing of the controllable switches to distribute the output power of each of the fully immersive power modules to each of the charging interfaces.

[0015] The relay proposed in this application can be applied in a fully immersion power module. When the relay needs to be turned on, the main adsorption component adsorbs the object to be adsorbed, while the auxiliary adsorption component provides additional driving force for the main adsorption component to adsorb the object to be adsorbed. When the relay needs to be turned off, the main adsorption component disconnects the object to be adsorbed, while the auxiliary adsorption component provides additional driving force for the main adsorption component to disconnect the object to be adsorbed. During operation, the auxiliary adsorption component significantly improves the resistance capability of the main adsorption component to adsorb or disconnect the object to be adsorbed, thereby reducing the time required for the relay to engage or disengage, and making the relay engagement or disengagement smoother. Attached Figure Description

[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the internal structure of a relay housing according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a relay when it is engaged, according to an embodiment of this application. Figure 3 This is a schematic diagram of the sliding part structure in an embodiment of this application; Figure 4 This is a waveform diagram of the relay drive in an embodiment of this application; Figure 5 This is a schematic diagram of the internal structure of a fully immersed power module according to an embodiment of this application; Figure 6 This is a schematic diagram of a fully immersive charging system provided in an embodiment of this application.

[0019] In the diagram: 1. Housing; 11. Slide rail; 12. Sliding part; 13. Spring; 2. Item to be adsorbed; 21. Rotating section; 22. Copper section; 23. Connecting section; 3. First contact; 4. Second contact; 5. Main coil; 6. Auxiliary coil; 7. Magnetic pole; 81. Sealed outer shell; 811. Liquid inlet port; 812. Liquid outlet port; 82. PCBA assembly; 110. Fully immersible power module; 120. Charging interface; 130. Controller; 140. Power distribution device.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the internal structure of a relay housing according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a relay when it is engaged, according to an embodiment of this application. Figure 3 This is a schematic diagram of the sliding part structure in an embodiment of this application; Figure 4This is a waveform diagram of the relay drive in an embodiment of this application; Figure 5 This is a schematic diagram of the internal structure of a fully immersed power module according to an embodiment of this application; Figure 6 This is a schematic diagram of a fully immersive charging system provided in an embodiment of this application.

[0027] refer to Figures 1-3 This application provides a relay, which may include a housing 1, a target element 2, a main adsorption assembly, and an auxiliary adsorption assembly. The housing 1 is provided with an output terminal and an input terminal. The target element 2 is connected to the housing 1 and extends along a first direction. The main adsorption assembly is disposed inside the housing 1 to adsorb the target element 2. When the main adsorption assembly adsorbs the target element 2, the output terminal and the input terminal are connected. The auxiliary adsorption assembly is disposed inside the housing 1 and is used to provide additional driving force for the main adsorption assembly to adsorb or disconnect the target element 2.

[0028] The relay proposed in this application embodiment can be applied in a fully immersion power module. When the relay needs to be turned on, the main adsorption component adsorbs the object to be adsorbed 2, while the auxiliary adsorption component provides additional driving force for the main adsorption component to adsorb the object to be adsorbed 2. When the relay needs to be turned off, the main adsorption component disconnects the object to be adsorbed 2, while the auxiliary adsorption component provides additional driving force for the main adsorption component to disconnect the object to be adsorbed 2. During operation, the auxiliary adsorption component significantly improves the resistance capability of the main adsorption component to adsorb or disconnect the object to be adsorbed 2, thereby reducing the time required for the relay to engage or disengage, and making the relay engagement or disengagement smoother.

[0029] In an exemplary embodiment, the main adsorption assembly includes a first contact 3, a second contact 4, and a main coil 5. The housing 1 is provided with an output terminal and an input terminal. The adsorbed part 2 is connected to the housing 1 and extends along a first direction. The first contact 3 is disposed inside the housing 1 and located on one side of the adsorbed part 2. The second contact 4 is disposed on the adsorbed part 2, wherein the second contact 4 is electrically connected to either the output terminal or the input terminal, and the first contact 3 is electrically connected to the other of the output terminal or the input terminal. The main coil 5 and the first contact 3 are disposed on the same side of the adsorbed part 2 to adsorb the adsorbed part 2. When the main coil 5 adsorbs the adsorbed part 2, the second contact 4 contacts and conducts with the first contact 3. The auxiliary adsorption assembly includes an auxiliary coil 6 and a magnetic pole 7. The auxiliary coil 6 is disposed on one side of the adsorbed part 2. The magnetic pole 7 is disposed on the adsorbed part 2 and corresponds to the auxiliary coil 6. The auxiliary coil 6 adsorbs or repels the magnetic pole 7 to provide additional driving force for the main coil 5 to adsorb or disconnect the adsorbed part 2.

[0030] The relay proposed in this application embodiment can be applied in a fully immersion power module. When the relay needs to be turned on, the main coil 5 attracts the target component 2, while the auxiliary coil 6 attracts or releases the magnetic pole 7, thereby providing additional driving force for the main coil 5 to attract the target component 2, so that the first contact 3 and the second contact 4 make contact and conduct, thus connecting the output terminal and the input terminal. When the relay needs to be turned off, the main coil 5 disconnects the target component 2, while the auxiliary coil 6 releases or attracts the magnetic pole 7, thereby providing additional driving force for the main coil 5 to disconnect the target component 2, so that the first contact 3 and the second contact 4 separate, thus disconnecting the output terminal and the input terminal. During use, the auxiliary coil 6 and the magnetic pole 7 cooperate to assist the main coil 5 in attracting or disconnecting the target component 2, which greatly improves the resistance capability of the main coil 5 in attracting or disconnecting the target component 2, thereby reducing the time required for the relay to engage or disengage, and making the relay engagement or disengagement smoother.

[0031] It should be noted that the relay has two states: energized and de-energized. When the relay is energized, the main coil 5 attracts the object to be attracted 2, the first contact 3 and the second contact 4 are in contact, and the output terminal is connected to the input terminal. When the relay is de-energized, the main coil 5 disconnects from the object to be attracted 2, the first contact 3 and the second contact 4 are separated, and the output terminal is disconnected from the input terminal.

[0032] It should be understood that both the main coil 5 and the auxiliary coil 6 are electromagnet structures formed by coils wound around the outer periphery of the magnetic core. When the main coil 5 is energized, it has magnetic force, which attracts the object to be attracted 2, causing the object to be attracted 2 to approach and adhere to the magnetic core of the main coil 5. The object to be attracted 2 drives the second contact 4 to move and causes the second contact 4 to come into contact with the first contact 3. When the main coil 5 is de-energized, it loses its magnetic force, the object to be attracted 2 moves away from the main coil 5, and the second contact 4 separates from the first contact 3.

[0033] The auxiliary coil 6, in conjunction with the magnetic pole 7, can provide additional driving force for the object to be attracted 2 to move closer to or away from the main coil 5, thereby assisting the relay in engaging or disengaging.

[0034] In this embodiment, the first contact 3 can be a copper sheet, and the second contact 4 can be a spring.

[0035] refer to Figure 1 The first direction is the X direction. The housing 1 can adopt a rectangular structure, so the first direction can also be the length direction of the housing 1. The magnetic core axes of the main coil 5 and the auxiliary coil 6 can be the same as the width direction of the housing 1, so as to attract the adsorbed object 2 or the adsorbed magnetic pole 7. The width direction of the housing 1 is called the second direction.

[0036] Furthermore, such as Figure 1 and Figure 2As shown, the magnetic core of the main coil 5 is inclined on the side near the object to be attracted 2, so that the object to be attracted 2 can fit into the magnetic core of the main coil 5.

[0037] It should be noted that, as Figure 1 As shown, the auxiliary coil 6 can be positioned in various ways, taking the connection area between the object to be attracted 2 and the housing 1 as the reference point, such as... Figure 1 As shown, when the main coil 5 and auxiliary coil 6 are positioned at the lower left corner of the reference point, the auxiliary coil 6 attracts the magnetic pole 7, providing additional driving force for the main coil 5 to attract the object to be attracted 2. The auxiliary coil 6 also releases the magnetic pole 7, providing additional driving force for the main coil 5 to disconnect the object to be attracted 2. Furthermore, if the auxiliary coil 6 is positioned at the lower right corner of the reference point, it can also attract the magnetic pole 7, providing additional driving force for the main coil 5 to attract the object to be attracted 2. The auxiliary coil 6 can also be positioned at the upper right corner, upper left corner, etc., of the reference point.

[0038] refer to Figure 1 In a preferred embodiment, the auxiliary coil 6 and the main coil 5 are located on the same side of the adsorbed component 2 and are spaced apart in a first direction; wherein, the first contact 3 is located between the auxiliary coil 6 and the main coil 5; in the first direction, both the main coil 5 and the auxiliary coil 6 are located on the side of the connection area between the adsorbed component 2 and the housing 1 near the magnetic pole 7.

[0039] Specifically, the internal structure of such housing 1 is arranged in a compact manner, which helps to save space and control the size of the relay.

[0040] refer to Figure 1 In an exemplary embodiment, the adsorbent 2 may include a rotating section 21, a copper sheet section 22, and a connecting section 23 connected in sequence in a first direction; wherein the rotating section 21 is rotatably connected to the housing 1, and the copper sheet section 22 is adsorbed or disconnected from the main coil 5; the second contact 4 is disposed at the end of the connecting section 23 away from the copper sheet section 22; and the magnetic pole 7 is disposed at the end of the second contact 4 away from the connecting section 23.

[0041] Specifically, when the main coil 5 attracts the copper section 22, it drives the rotating section 21 to rotate. The copper section 22 is in contact with the magnetic core of the main coil 5. The copper section 22 further drives the connecting section 23 and the second contact 4 to rotate synchronously. The second contact 4 is in contact with the first contact 3. Of course, when the main coil 5 attracts the copper section 22, the auxiliary coil 6 also attracts the magnetic pole 7, thereby assisting the main coil 5 in attracting the copper section 22.

[0042] The rotating section 21 and the connecting section 23 are both insulated structures to facilitate the adsorption of the copper foil section 22 by the main coil 5.

[0043] Furthermore, the rotating section 21 can also be an elastic component, so that the rotating section 21 can be directly fixed to the housing 1. When the main coil 5 attracts the copper foil section 22, the rotating section 21 deforms. When the main coil 5 disconnects from the copper foil section 22, the rotating section 21 returns to its original shape.

[0044] refer to Figures 1-3 In an exemplary embodiment, the second contact 4 is connected to the end of the member to be attracted 2; the relay also includes a slide rail 11 and a sliding part 12, the slide rail 11 is disposed inside the housing 1; the sliding part 12 is rotatably connected to the end of the second contact 4 away from the member to be attracted 2 and slides in cooperation with the slide rail 11; wherein, the sliding direction of the sliding part 12 coincides with the axial direction of the magnetic core of the auxiliary coil 6, and the magnetic pole 7 is disposed at the end of the sliding part 12 facing the auxiliary coil 6.

[0045] Specifically, such as Figure 3 As shown in the embodiment of this application, the slide rail 11 can be block-shaped with a semi-circular groove, and the sliding part 12 is column-shaped and slidably fitted in the groove. The axial direction of the sliding part 12 coincides with the axial direction of the magnetic core of the auxiliary coil 6. In this way, when the magnetic pole 7 is set at one end of the sliding part 12 near the auxiliary coil 6, it is convenient for the auxiliary coil 6 to attract or repel the magnetic pole 7, and the movement process of the adsorbed member 2 is more stable.

[0046] It should be understood that the slide rail 11 can also be a common track, and the sliding part 12 can be a block-shaped slider set on the slide rail 11, so that the extension direction of the slide rail 11 is the same as the second direction, so that the auxiliary coil 6 can attract or spring open the magnetic pole 7 placed on the slider.

[0047] It should be noted that, as Figure 1 As shown, the sliding part 12 is rotatably connected to the end of the second contact 4 away from the connecting section 23. Thus, when the auxiliary coil 6 attracts or retracts the magnetic pole 7, the rotating section 21 rotates relative to the housing 1, and the second contact 4 rotates relative to the sliding part 12.

[0048] Among them, during the rotation of the adsorbent 2, if the rotation angle is small, then... Figures 1 to 2 During the process, the elongation of the adsorbed part 2 can be borne by the deformation of the spring; of course, a strip hole can also be provided on the spring and connected to the sliding part 12 by a pin, so that the spring can rotate relative to the sliding part 12 or move relative to the sliding part 12.

[0049] Furthermore, the sliding part 12 has a groove on its outer periphery, and the end of the second contact 4 passes through the groove and is rotatably connected to the sliding part 12 by a pin; wherein, the sliding part 12 is made of insulating material.

[0050] It should be noted that the groove can be designed to be large, so that when the second contact 4 rotates relative to the sliding part 12, the rotation process of the second contact 4 will not be blocked by the side wall of the groove.

[0051] The sliding part 12 is made of insulating material, so the sliding part 12 will not affect the process of the auxiliary coil 6 attracting or repelling the magnetic pole 7, making it more convenient to use.

[0052] refer to Figure 1 and Figure 2 In an exemplary embodiment, the relay may further include a spring 13, which connects the housing 1 and the object to be attracted 2; wherein, in the first direction, the spring 13 is located on the side away from the magnetic pole 7 in the connection area between the object to be attracted 2 and the housing 1; when the main coil 5 attracts the object to be attracted 2, the spring 13 is stretched.

[0053] like Figure 2 As shown, the axial direction of spring 13 can also be the same as the second direction, and spring 13 and main coil 5 are set on the same side of the adsorbed part 2. When the main coil 5 adsorbs the copper section 22 and drives the rotating section 21 to rotate, spring 13 is stretched. When the main coil 5 disconnects the copper section 22, spring 13 returns to its original deformation and drives the rotating section 21 to rotate, thereby moving the copper section 22 away from the main coil 5. That is, spring 13 can also assist the main coil 5 in disconnecting from the adsorbed part 2, that is, the auxiliary relay is disconnected. In this way, with the auxiliary coil 6 and magnetic pole 7, the process of the main coil 5 disconnecting the copper section 22 and the separation of the second contact 4 from the first contact 3 can be made faster and more stable.

[0054] The specific control process of the relay is as follows: in response to the relay's activation control command, a positive level signal is applied to the main coil 5 and an adsorption control signal is applied to the auxiliary coil 6 to assist the main coil 5 in adsorbing the object to be adsorbed 2; or, in response to the relay's deactivation control command, the positive level signal of the main coil 5 is canceled and a deactivation control signal is applied to the auxiliary coil 6 to assist the main coil 5 in deactivating the object to be adsorbed 2.

[0055] In an exemplary embodiment, the adsorption control signal is a positive level signal or a positive pulse signal; if the adsorption control signal is a positive level signal, the positive level signal is canceled after a preset time interval; the disconnection control signal is a negative level signal or a negative pulse signal; if the disconnection control signal is a negative level signal, the positive level signal is canceled after a preset time interval.

[0056] Specifically, this method is executed by a control mechanism, such as... Figure 4As shown, time T0 to T3 constitutes one cycle, and time T4 marks the start of the next cycle. At time T0, the control mechanism responds to the relay's activation control command, energizing the main coil 5 to attract the object to be attracted, 2. Simultaneously, a positive voltage is applied to the auxiliary coil 6 to attract the magnetic pole 7, thus assisting the object to be attracted, 2, to approach the main coil 5. At this time, the second contact 4 and the first contact 3 are in contact, and the relay is activated. At time T1, the positive voltage of the auxiliary coil 6 is released, meaning the auxiliary coil 6 no longer attracts the magnetic pole 7, but the main coil 5 remains energized, and the object to be attracted, 2, is still attracted to the main coil 5. That is, the second contact 4 remains in contact with the first contact 3, and the relay remains activated. At time T2, the control mechanism responds to the relay's deactivation control command, releasing the voltage of the main coil 5, no longer attracting the object to be attracted, and simultaneously applying a negative pulse to the auxiliary coil 6 to repel the magnetic pole 7. Thus, the object to be attracted, 2, quickly moves away from the main coil 5, the second contact 4 separates from the first contact 3, and the relay deactivates. This continues until time T4, when the next cycle begins.

[0057] It should be noted that when a positive or negative voltage is applied to the auxiliary coil 6, the positive or negative voltage must be released after a preset time.

[0058] refer to Figure 5 Based on the above embodiments, this application provides a fully immersion power module, which may include a sealed housing 81, a PCBA assembly 82, and the aforementioned relay. The sealed housing 81 has a liquid inlet port 811 and a liquid outlet port 812. The PCBA assembly 82 is disposed inside the sealed housing 81, wherein the PCBA assembly 82 is immersed in insulating coolant inside the sealed housing 81. The relay is mounted on the PCBA assembly 82.

[0059] Specifically, such as Figure 5 As shown, Figure 5 The diagram shows the internal structure of the sealed housing 81, that is, the PCBA assembly 82 should be located inside the sealed housing 81, and the aforementioned relay is installed on the PCBA assembly 82; Figure 5 The wavy dotted line indicates the coolant level inside the sealed housing 81. Low-temperature coolant flows into the fully submerged power module from the inlet port 811 to absorb heat and rise in temperature, while high-temperature coolant flows out of the fully submerged power module from the outlet port 812.

[0060] like Figure 5 As shown, in an exemplary embodiment, the inlet port 811 is located below the outlet port 812 in the direction of gravity.

[0061] Specifically, in the direction of gravity, the inlet port 811 is located below the outlet port 812. In this way, the high-temperature coolant in the fully submerged power module expands and rises and flows out from the outlet port 812. The flow process is more reasonable and smooth, and the coolant at the outlet port 812 will not repeatedly cross with the coolant at the inlet port 811, resulting in better heat dissipation.

[0062] In an exemplary embodiment, temperature detection devices are installed in both the liquid inlet port 811 and the liquid outlet port 812, and a temperature detection unit is installed on the PCBA assembly 82.

[0063] Specifically, both the temperature detection device and the temperature detection unit can be a temperature sensor or other temperature measurement structure, so as to control the low-temperature coolant temperature at the liquid inlet port 811 of the fully immersed power module, the high-temperature coolant temperature at the liquid outlet port 812, and the temperature at PCBA assembly 82, making it more convenient to use.

[0064] In addition, both the inlet port 811 and the outlet port 812 can be equipped with a backflow preventer to prevent coolant backflow. There are many traditional solutions for the backflow preventer, which will not be elaborated here.

[0065] refer to Figure 6 Based on the above embodiments, this application provides a fully immersive charging system. The charging system may include at least one charging interface 120, a power distribution device 140, at least two of the aforementioned fully immersive power modules 110, and a controller 130. The power distribution device 140 is electrically connected to each charging interface 120. The fully immersive power modules 110 are electrically connected to the power distribution device 140 and are used to convert AC power from the power grid into DC power, which is then supplied to the charging interface 120 via the power distribution device 140. The controller 130 is electrically connected to the power distribution device 140 and is used to acquire the required power of each charging interface 120. Based on the connection relationship of the controllable switches in the power distribution device 140 and the required power, the controller sends a scheduling command to the power distribution device 140. The power distribution device 140 is used to control the opening or closing of the controllable switches in response to the scheduling command, so as to distribute the output power of each fully immersive power module 110 to each charging interface 120.

[0066] In one optional implementation, the charging system provided in this application is an integrated DC charging pile, with the charging interface 120 used to connect the charging gun, and the charging gun being hung on the host of the charging system via the gun holder on the main body of the charging system.

[0067] In one optional implementation, the charging system provided in this application is a split-type DC charging pile. The charging system also includes multiple charging terminals. The charging interface 120 is used to connect the charging terminals. The charging terminals are set separately from the main body of the charging system. The charging terminals are equipped with a single charging gun or dual charging guns for outputting power to electric vehicles.

[0068] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A relay, characterized in that, include: The housing (1) is provided with output terminals and input terminals; The adsorbent (2) is connected to the housing (1) and extends along the first direction; The main adsorption component is disposed inside the housing (1) to adsorb the object to be adsorbed (2), wherein when the main adsorption component adsorbs the object to be adsorbed (2), the output terminal is connected to the input terminal; An auxiliary adsorption component is disposed within the housing (1). The auxiliary adsorption component is used to provide additional driving force for the main adsorption component to adsorb or disconnect the adsorbent (2).

2. The relay as described in claim 1, characterized in that, The main adsorption component includes: The first contact element (3) is disposed inside the housing (1) and located on one side of the adsorbent element (2); The second contact (4) is disposed on the adsorbent (2), wherein the second contact (4) is electrically connected to either the output terminal or the input terminal, and the first contact (3) is electrically connected to the other of the output terminal or the input terminal. The main coil (5) and the first contact (3) are disposed on the same side of the adsorbent (2) to adsorb the adsorbent (2). When the main coil (5) adsorbs the adsorbent (2), the second contact (4) contacts and conducts with the first contact (3). The auxiliary adsorption component includes: An auxiliary coil (6) is disposed on one side of the object to be adsorbed (2); A magnetic pole (7) is disposed on the object to be attracted (2) and corresponds to the auxiliary coil (6), wherein the auxiliary coil (6) attracts or repels the magnetic pole (7) to provide additional driving force for the main coil (5) to attract or disconnect the object to be attracted (2).

3. The relay as described in claim 2, characterized in that, The auxiliary coil (6) and the main coil (5) are located on the same side of the adsorbent (2) and are spaced apart in the first direction; The first contact (3) is located between the auxiliary coil (6) and the main coil (5); In the first direction, the main coil (5) and the auxiliary coil (6) are both located on the side of the connection area between the adsorbed part (2) and the housing (1) near the magnetic pole (7).

4. The relay as described in claim 3, characterized in that, The adsorbent component (2) includes a rotating section (21), a copper sheet section (22), and a connecting section (23) connected in sequence in the first direction. The rotating section (21) is rotatably connected to the housing (1), and the copper strip section (22) is either attracted to or disconnected from the main coil (5). The second contact (4) is disposed at the end of the connecting segment (23) away from the copper foil segment (22); The magnetic pole (7) is located at the end of the second contact (4) away from the connecting segment (23).

5. The relay as described in claim 2, characterized in that, The second contact (4) is connected to the end of the element to be adsorbed (2); the relay further includes: A slide rail (11) is disposed inside the housing (1); The sliding part (12) is rotatably connected to the end of the second contact member (4) away from the adsorbent member (2) and slides in cooperation with the slide rail (11); The sliding direction of the sliding part (12) coincides with the magnetic core axis of the auxiliary coil (6), and the magnetic pole (7) is disposed at the end of the sliding part (12) facing the auxiliary coil (6).

6. The relay as described in claim 3, characterized in that, The relay also includes: Spring (13) connects the housing (1) and the adsorbent (2); In the first direction, the spring (13) is located on the side of the connection area between the adsorbed part (2) and the housing (1) away from the magnetic pole (7); When the main coil (5) attracts the object to be attracted (2), the spring (13) is stretched.

7. The relay as described in claim 2, characterized in that, The first contact (3) is a copper sheet, and the second contact (4) is a spring.

8. The relay as described in claim 5, characterized in that, The sliding part (12) has a groove on its outer periphery, and the end of the second contact member (4) passes through the groove and is rotatably connected to the sliding part (12) by a pin; The sliding part (12) is made of insulating material.

9. A fully immersion power module, characterized in that, include: The sealed housing (81) has an inlet port (811) and an outlet port (812), wherein, in the direction of gravity, the inlet port (811) is located below the outlet port (812); PCBA assembly (82) is disposed within the sealed housing (81), wherein the PCBA assembly (82) is immersed in an insulating coolant inside the sealed housing (81); The relay as described in any one of claims 1 to 8 is mounted on the PCBA assembly (82).

10. A fully immersion charging system, characterized in that, include: At least one charging port (120); The power distribution device (140) is electrically connected to each of the charging interfaces (120); At least two fully immersion power modules (110) as described in claim 9 are electrically connected to the power distribution device (140), the fully immersion power modules (110) being used to convert AC power from the power grid into DC power and provide it to the charging interface (120) through the power distribution device (140). A controller (130) is electrically connected to the power distribution device (140). The controller (130) is used to obtain the required power of each of the charging interfaces (120) and send a scheduling command to the power distribution device (140) based on the connection relationship of the controllable switches in the power distribution device (140) and the required power of each interface. The power distribution device (140) is used to control the opening or closing of the controllable switches in response to the scheduling command, so as to distribute the output power of each of the fully immersive power modules (110) to each of the charging interfaces (120).

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