Double-pole-double-throw switch, high-voltage power supply system and vehicle

Abstract

The utility model relates to a double-pole-double-throw switch, a high-voltage power supply system and a vehicle, and the double-pole-double-throw switch comprises a first static terminal, a second static terminal, a first movable terminal, a second movable terminal, and a driving assembly which drives the first movable terminal and the second movable terminal to move synchronously, the first movable terminal is selectively connected with one of the first static terminal and the second static terminal and disconnected with the other one, and the second movable terminal is connected with or disconnected from the first static terminal. In the double-pole-double-throw switch provided by the invention, the driving assembly drives the first moving terminal and the second moving terminal to move synchronously to complete contact and disconnection between the first moving terminal and the first static terminal and between the second moving terminal and the second static terminal respectively, so that switching between different states is realized, and the double-pole-double-throw switch is used for corresponding to two modes of 400V parallel connection and 800V series connection respectively; switching between two voltage platforms can be realized easily, operation is simple, and cost is low.

Description

Technical Field

[0001] This disclosure relates to the field of new energy vehicle technology, and in particular to a double-pole double-throw switch, a high-voltage power supply system, and a vehicle. Background Technology

[0002] With the continuous development of the new energy industry, power batteries have evolved into various high-voltage systems. Classified by motor operating voltage, there are different voltage platforms for battery high-voltage systems within the 400V~800V range. Typically, each battery pack uses only one voltage, such as a 400V or 800V platform. The traditional 400V platform, limited by hardware capabilities, cannot achieve high charging power, generally requiring over 30 minutes for charging. While the 800V platform can increase charging power and reduce charging time to 15 minutes, most charging stations on the market use a 400V platform, making them incompatible with the 800V platform and causing inconvenience in daily use.

[0003] In related technologies, a booster is usually included with the vehicle to ensure compatibility with most 400V charging stations on the market, which increases costs. Alternatively, multiple relays can be added to the high-voltage circuit to switch between 400V and 800V voltage platforms by controlling the switching states of the relays. However, this solution adds more relays and fuses, making the control logic complex and prone to malfunctions that could lead to short circuits. Furthermore, this solution is more expensive. Utility Model Content

[0004] To overcome the problems existing in related technologies, this disclosure provides a double-pole double-throw switch, a high-voltage power supply system, and a vehicle.

[0005] According to a first aspect of the present disclosure, a double-pole double-throw switch is provided, including a first stationary terminal, a second stationary terminal, a first moving terminal, a second moving terminal, and a drive assembly for driving the first moving terminal and the second moving terminal to move synchronously, wherein the first moving terminal selectively engages with one of the first stationary terminal and the second stationary terminal and disconnects from the other, and the second moving terminal engages with or disconnects from the first stationary terminal.

[0006] Optionally, the second moving terminal, the first stationary terminal, the first moving terminal, and the second stationary terminal are stacked sequentially along a first direction, the first moving terminal and the second moving terminal move synchronously along the first direction, the first stationary terminal has a main body portion arranged parallel to the first moving terminal and an overlapping portion overlapping the first moving terminal, and the first moving terminal is located between the overlapping portion and the second stationary terminal.

[0007] Optionally, the end of the second moving terminal overlaps the main body, and the second moving terminal and the overlapping portion are located on both sides of the main body and arranged in parallel.

[0008] Optionally, the second stationary terminal is arranged parallel to and partially overlaps with the first moving terminal.

[0009] Optionally, the drive assembly includes a drive element and an actuator connected to the output end of the drive element. The first moving terminal and the second moving terminal are respectively fixed on the actuator, and the drive element drives the first moving terminal and the second moving terminal to move synchronously through the actuator.

[0010] Optionally, the driving component is a motor, and the actuator is threadedly connected to a connecting rod, which is connected to the output end of the motor. An elastic element is sleeved on the connecting rod, and the two ends of the elastic element abut against the output end of the motor and the actuator, respectively.

[0011] Optionally, the driving component is an electromagnetic actuator, the actuator is provided with a connecting rod, the electromagnetic actuator is provided with an opening, the connecting rod is located in the opening, and the electromagnetic actuator drives the actuator to move along the axial direction of the connecting rod.

[0012] Optionally, the actuator has an adjacent first side and a second side, the first side and the second side are respectively provided with a protruding fork-shaped structure, and one end of the first moving terminal and the second moving terminal are respectively provided with a socket for the fork-shaped structure to extend into.

[0013] Optionally, the first moving terminal is provided with a connection contact point at the position where it connects to the first stationary terminal and the second stationary terminal; and / or, the second moving terminal is provided with a connection contact point at the position where it connects to the first stationary terminal.

[0014] Optionally, the first moving terminal and the second moving terminal are provided with arched portions.

[0015] Optionally, it also includes a first cover and a second cover that are fastened together, wherein the first cover and / or the second cover are provided with at least one of a first limiting groove, a second limiting groove and a third limiting groove;

[0016] The first limiting groove and the second limiting groove extend along the width direction. The first limiting groove is used to accommodate the first moving terminal and the second stationary terminal. The second limiting groove is used to accommodate the main body of the first stationary terminal. The third limiting groove extends along the length direction to accommodate the second moving terminal.

[0017] Optionally, at least the ends of the first stationary terminal, the second stationary terminal, and the first moving terminal extend out of the first cover and the second cover.

[0018] Optionally, the double-pole double-throw switch has a first state and a second state, and the driving component reciprocates along a first direction to switch between the first state and the second state, wherein,

[0019] In the first state, the first moving terminal and the first stationary terminal are engaged, and the first moving terminal and the second stationary terminal are disconnected; the second moving terminal and the first stationary terminal are disconnected, so that multiple loads connected to the double-pole double-throw switch are connected in series.

[0020] In the second state, the first moving terminal and the first stationary terminal are disconnected, and the first moving terminal and the second stationary terminal are engaged; the second moving terminal and the first stationary terminal are engaged to allow multiple loads connected to the double-pole double-throw switch to be connected in parallel.

[0021] According to a second aspect of the present disclosure, a high-voltage power supply system is provided, including a power battery and the aforementioned double-pole double-throw switch.

[0022] According to a third aspect of the present disclosure, a vehicle is provided, including the high-voltage power supply system described above.

[0023] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: In the double-pole double-throw switch provided by this disclosure, the driving component drives the first moving terminal and the second moving terminal to move synchronously, completing the contact and disconnection of the first moving terminal and the second moving terminal with the first stationary terminal and the second stationary terminal respectively, realizing the switching between different states, which are used to correspond to the two modes of 400V parallel connection and 800V series connection respectively, and can easily switch between the two voltage platforms. The operation is simple and the cost is low.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a circuit diagram of a relay-based high-voltage power supply system provided in related technologies.

[0027] Figure 2 This is a circuit diagram of a high-voltage power supply system according to an exemplary embodiment.

[0028] Figure 3 This is a schematic diagram of a double-pole double-throw switch according to an exemplary embodiment.

[0029] Figure 4 This is a circuit diagram of a high-voltage power supply system (800V series fast charging) according to an exemplary embodiment.

[0030] Figure 5 This is a circuit diagram of a high-voltage power supply system (400V parallel fast charging) according to an exemplary embodiment.

[0031] Figure 6 This is a circuit diagram of a high-voltage power supply system (series external discharge) according to an exemplary embodiment.

[0032] Figures 7 to 13 This is a schematic diagram of a double-pole double-throw switch according to a first exemplary embodiment.

[0033] Figures 14 to 18 This is a schematic diagram of a double-pole double-throw switch according to a second exemplary embodiment.

[0034] Explanation of reference numerals in the attached figures

[0035] 1-Contactor; 11-First stationary terminal; 110-Main body; 112-Bending portion; 113-Overlapping portion; 12-Second stationary terminal; 21-First moving terminal; 22-Second moving terminal; 200-Socket; 201-Connecting contact point; 203-Arch-shaped portion; 3-Drive assembly; 31-Driver; 32-Actuator; 3201-First side; 3202-Second side; 320-Fork-shaped structure; 33-Electromagnetic actuator; 330-Opening; 3 5-Connecting rod; 36-Elastic element; 41-First cover; 410-Through hole; 42-Second cover; 421-First limiting groove; 422-Second limiting groove; 423-Third limiting groove; 424-Fourth limiting groove; M1, M2, M3, M4-Battery module; K1-First opening / closing element; K2-Second opening / closing element; K3, K4-Third opening / closing element; 111-First branch; 121-Second branch; 211-Third branch; 221-Fourth branch. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0037] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0038] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the normal use of the double-pole double-throw switch provided in this disclosure, while "inner" and "outer" may refer to the inner and outer contours of the corresponding component or its location within or outside its environment, depending on the specific context. Furthermore, when the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not imply sequentiality or importance.

[0039] In related technologies, such as Figure 1 As shown, by setting multiple relays and multiple switches, the parallel and series connection of two batteries can be converted, thereby realizing the conversion between 400V and 800V voltage platforms. This adds a lot of relays and fuses, making the control logic complex and prone to malfunctions that could lead to short circuits. In addition, this solution is costly.

[0040] To solve the above problems, such as Figure 2 As shown, this disclosure provides a high-voltage power supply system, which includes multiple interconnected battery modules M1, M2, M3, and M4, and a contactor 1 connected between the multiple battery modules M1, M2, M3, and M4; as Figure 3 As shown, contactor 1 has a first stationary terminal 11, a second stationary terminal 12, a first moving terminal 21, and a second moving terminal 22; wherein the first moving terminal 21 and the second moving terminal 22 move synchronously; the first moving terminal 21 selectively engages with one of the first stationary terminal 11 and the second stationary terminal 12, and disconnects from the other; the second moving terminal 22 engages or disconnects with the first stationary terminal 11, so that multiple battery modules M1, M2, M3, and M4 are selectively connected in parallel or in series. Here, the number of multiple battery modules is not specifically limited, and their number and voltage can be designed according to requirements.

[0041] like Figure 4 As shown, when the first moving terminal 21 is engaged with the first stationary terminal 11 and disconnected from the second stationary terminal 12, and the second moving terminal 22 is disconnected from the first stationary terminal 11, multiple battery modules M1, M2, M3, and M4 are in series, corresponding to an 800V series fast charging mode. Figure 5As shown, when the first moving terminal 21 is disconnected from the first stationary terminal 11 and connected to the second stationary terminal 12, and the second moving terminal 22 is connected to the first stationary terminal 11, multiple battery modules M1, M2, M3, and M4 are in parallel connection, corresponding to a 400V parallel charging mode, which can smoothly achieve the conversion between 400V and 800V voltage platforms. Figure 6 As shown, when external discharge is required, the first moving terminal 21 is connected to the first stationary terminal 11 and disconnected from the second stationary terminal 12, and the second moving terminal 22 is disconnected from the first stationary terminal 11, so as to perform series external discharge.

[0042] Contactor 1 plays a crucial role in switching between the aforementioned different states. The structure of contactor 1 will be described in detail below. Contactor 1 is actually a double-pole double-throw switch. Figure 7 As shown, this disclosure provides a double-pole double-throw switch to replace multiple relays in existing technologies. The double-pole double-throw switch includes a first stationary terminal 11, a second stationary terminal 12, a first moving terminal 21, a second moving terminal 22, and a drive assembly 3 that drives the first moving terminal 21 and the second moving terminal 22 to move synchronously. The first moving terminal 21 selectively engages with one of the first stationary terminal 11 and the second stationary terminal 12, and disengages from the other. The second moving terminal 22 engages with or disengages from the first stationary terminal 11. Here, the drive assembly 3 can be any suitable form, such as a motor, electromagnetic actuator, etc., as described below. The drive assembly 3 can simultaneously drive the first moving terminal 21 and the second moving terminal 22 to move; of course, embodiments where they are driven separately are also within the scope of this disclosure. Here, "first direction" can refer to... Figure 3 , Figure 8 and Figure 18 The vertical direction of the diagram shown can also be... Figures 4 to 6 The left and right directions of the middle image.

[0043] In the double-pole double-throw switch provided in this disclosure, the drive assembly 3 drives the first moving terminal 21 and the second moving terminal 22 to move synchronously, completing the contact and disconnection of the first moving terminal 21 and the second moving terminal 22 with the first stationary terminal 11 and the second stationary terminal 12 respectively, realizing the switching between different states, which are used to correspond to the two modes of 400V parallel connection and 800V series connection respectively. It can easily switch between the two voltage platforms, and the operation is simple and the cost is low.

[0044] The double-pole double-throw switch has a first state and a second state. The drive component 3 reciprocates along a first direction to switch between the first state and the second state. In the first state, the first moving terminal 21 and the first stationary terminal 11 are engaged, and the first moving terminal 21 and the second stationary terminal 12 are disengaged; the second moving terminal 22 and the first stationary terminal 11 are disengaged, so that multiple loads connected to the double-pole double-throw switch are connected in series. In the second state, the first moving terminal 21 and the first stationary terminal 11 are disengaged, and the first moving terminal 21 and the second stationary terminal 12 are engaged; the second moving terminal 22 and the first stationary terminal 11 are engaged, so that multiple loads connected to the double-pole double-throw switch are connected in parallel. When the load is a battery module, the first state corresponds to the state of multiple battery modules M1, M2, M3, and M4 connected in series as described above, corresponding to an 800V series mode; the second state corresponds to the state of multiple battery modules M1, M2, M3, and M4 connected in parallel as described above, corresponding to a 400V parallel mode. Of course, the double-pole double-throw switch here is not limited to high-voltage power supply systems, but can also be used in any circuit that needs to control the on / off state. The "load" here can be various electronic components installed in the circuit, and this disclosure does not limit it.

[0045] In this disclosure, such as Figure 7 As shown, the drive assembly 3 includes a drive element 31 and an actuator 32 connected to the output end of the drive element 31. A first moving terminal 21 and a second moving terminal 22 are respectively fixed to the actuator 32. The drive element 31 drives the first moving terminal 21 and the second moving terminal 22 to move synchronously through the actuator 32. Since both the first moving terminal 21 and the second moving terminal 22 are connected to the actuator 32, the drive assembly 3 drives the two first moving terminals 21 and the second moving terminal 22 to move synchronously, allowing switching between two states. Compared to embodiments where each moving terminal is driven separately, this saves one drive assembly and simplifies the components. When the actuator 32 moves upward, it switches to the first state; when it moves downward, it switches to the second state.

[0046] In one exemplary embodiment of this disclosure, such as Figures 7 to 13 As shown, the driving component 31 can be a motor, and the actuator 32 is threadedly connected to a connecting rod 35, which is connected to the output end of the motor. The rotation of the motor can be converted into the up-and-down movement of the actuator 32. By controlling the forward or reverse rotation of the motor, the actuator 32 can be driven to move up or down. In addition, an elastic element 36 is sleeved on the connecting rod 35. The two ends of the elastic element 36 abut against the output end of the linear motor and the actuator 32, respectively. During the rotation of the motor, the elastic element 36 can prevent overpressure on the actuator 32.

[0047] In another exemplary embodiment of this disclosure, such as Figures 14 to 18As shown, the driving component 31 can be an electromagnetic actuator 33, and the actuator 32 is equipped with a connecting rod 35. The electromagnetic actuator 33 has an opening 330, and the connecting rod 35 is located within the opening 330. The electromagnetic actuator 33 drives the actuator 32 to move axially along the connecting rod 35. The electromagnetic actuator 33 is a magnetic coil. When the magnetic coil is energized, it generates a magnetic force, which acts on the connecting rod 35, driving the actuator 32 to move upward. When the magnetic coil is de-energized, it loses its force on the connecting rod 35, and the actuator 32 moves downward under the action of gravity, realizing the switching between the first and second states. Figures 7 to 13 The illustrated embodiments and Figures 14 to 18 In the embodiments shown, the drive component 3 is configured differently, but the arrangement and structure of the multiple terminals are similar.

[0048] There are various ways in which the first moving terminal 21 and the second moving terminal 22 are fixed to the actuator 32. In this disclosure, such as Figure 9 and Figure 17 As shown, the actuator 32 has adjacent first side surface 3201 and second side surface 3202. The first side surface 3201 and second side surface 3202 are respectively provided with protruding fork-shaped structures 320. One end of the first movable terminal 21 and the second movable terminal 22 respectively has a socket 200 into which the fork-shaped structures 320 extend. Through the mechanical cooperation of the fork-shaped structures 320 and the sockets 200, the first movable terminal 21 and the second movable terminal 22 can be fixed to the actuator 32, and the actuator 32 drives the two movable terminals to move up and down.

[0049] This disclosure provides a design for the spatial relative positions and structure of the first stationary terminal 11, the second stationary terminal 12, the first moving terminal 21, and the second moving terminal 22. In this disclosure, as shown... Figure 7 As shown, the second moving terminal 22, the first stationary terminal 11, the first moving terminal 21, and the second stationary terminal 12 are arranged in sequence along the first direction. The first moving terminal 21 and the second moving terminal 22 move synchronously. To achieve the engagement of the first stationary terminal 11 with the first moving terminal 21 and the second moving terminal 22 respectively, as shown... Figure 10 As shown, the first stationary terminal 11 has a main body 110 and an overlapping portion 113 arranged at an angle to each other. The main body 110 is arranged parallel to the first moving terminal 21. The overlapping portion 113 overlaps the first end of the first moving terminal 21. The first moving terminal 21 is located between the overlapping portion 113 and the first end of the second stationary terminal 12. The first end of the second moving terminal 22 overlaps the main body 110. Here, "first end" refers to the end where multiple terminals are in contact, and "second end" refers to the end opposite to the first end. In this embodiment, as... Figure 7 and Figure 11As shown, the first moving terminal 21, the second moving terminal 22, and the second stationary terminal 12 can be in a straight line structure. The main body 110 and the overlapping part 113 of the first stationary terminal 11 can be arranged vertically. The main body 110 and the first moving terminal 21 are arranged in parallel. One end of the overlapping part 113 is connected to the main body 110, and the other end overlaps the first moving terminal 21. The first moving terminal 21 moves upward and engages with the first stationary terminal 11. The first moving terminal 21 moves downward and disconnects from the first stationary terminal 11 and engages with the second stationary terminal 12. In addition, in order to avoid the movement of the first moving terminal 21, the overlapping part 113 has an upwardly bent part 112. On the side where the main body 110 and the second moving terminal 22 are located, two connecting pieces are provided to overlap, while on the side of the overlapping part 113, the first moving terminal 21 and the second stationary terminal 12, three connecting pieces are provided to overlap, with a thickness significantly higher than the other side. By designing the bent part 112, it can be ensured that when the first moving terminal 21 moves downward and contacts the second stationary terminal 12, and when the second moving terminal 22 contacts the first stationary terminal 11, the main body 110 of the first stationary terminal 11 and the first moving terminal 21 are located in the same plane.

[0050] In this disclosure, the first end of the second moving terminal 22 overlaps the end of the main body 110, and the second moving terminal 22 and the overlapping portion 113 are located on both sides of the main body 110 and arranged in parallel. In other embodiments, the second moving terminal 22 can also be arranged parallel to the main body 110, requiring only adjustment of the connection direction between the second moving terminal 22 and the actuator 32. When the second moving terminal 22 moves upward, it disconnects from the first stationary terminal 11, and when the second moving terminal 22 moves downward, it engages with the first stationary terminal 11.

[0051] The second stationary terminal 12 and the first moving terminal 21 can be arranged parallel to each other and partially overlap. In other embodiments, the second stationary terminal 12 can also be arranged perpendicular to the first moving terminal 21, with the overlapping portion 113 and the second stationary terminal 12 located on both sides of the first moving terminal 21. The first stationary terminal 11 and the second stationary terminal 12 are respectively located on both sides of the first moving terminal 21, so that when the first moving terminal 21 moves upward, it connects with the first stationary terminal 11, and when the first moving terminal 21 moves downward, it connects with the second stationary terminal 12.

[0052] like Figure 11 and Figure 17As shown, the first moving terminal 21 has a connection contact point 201 at the position where it connects to the first stationary terminal 11 and the second stationary terminal 12; and / or, the second moving terminal 22 has a connection contact point 201 at the position where it connects to the first stationary terminal 11. The first moving terminal 21 and the second moving terminal 22 each include a copper busbar body and a connection contact point 201 disposed on the copper busbar body. The copper busbar body can be formed by stacking multiple layers of copper foil, which are welded and fixed at both ends to fuse the multiple layers of copper busbar into one piece. The connection contact point 201 can be a silver-tin contact, and the connection contact point 201 can be fixed to the end of the copper busbar body by welding to ensure that the stationary terminal and the moving terminal form a low connection impedance at the contact position.

[0053] like Figure 11 As shown, an arched portion 203 is provided on the first moving terminal 21 and the second moving terminal 22 near the first end to ensure that the first moving terminal 21 and the second moving terminal 22 can move up and down following the actuator 32.

[0054] like Figures 12 to 14 , Figure 16 As shown, the double-pole double-throw switch provided in this disclosure also includes a first cover 41 and a second cover 42 fastened together. The first cover 41 and / or the second cover 42 are provided with at least one of a first limiting groove 421, a second limiting groove 422, and a third limiting groove 423. The first limiting groove 421 and the second limiting groove 422 extend along the width direction. The first limiting groove 421 is used to accommodate a first moving terminal 21 and a second stationary terminal 12. The second limiting groove 422 is used to accommodate the main body 110 of the first stationary terminal 11. The third limiting groove 423 extends along the length direction to accommodate the second moving terminal 22. The first cover 41 and the second cover 42 can be made of plastic. The first cover 41 and the second cover 42 are fastened together to limit multiple terminals within their respective limiting grooves. The positions of the two stationary terminals are fixed, while the two moving terminals can only move up and down, remaining fixed in both the length and width directions, thus preventing shaking and abnormal noise between the first cover 41 and the second cover 42. Furthermore, as... Figure 16 As shown, the first cover 41 and the second cover 42 are not regular rectangular structures. They have protruding parts in the length direction, which wrap the second end of the second moving terminal 22 between the first cover 41 and the second cover 42. Correspondingly, the protruding parts are provided with a fourth limiting groove 424, which can limit the second moving terminal 22 in the length direction and prevent it from moving in the length direction.

[0055] In addition, Figure 12 In the first exemplary embodiment shown, the first cover 41 has a through hole 410 for the output shaft of the drive member 31 to pass through. The drive member 31 is placed outside the cover to drive the internal moving terminal. Figure 14In the second exemplary embodiment shown, the first cover 41 is also provided with a through hole 410. When the actuator 32 moves upward, the through hole 410 can avoid the connecting rod 35 on the actuator 32 and will not affect the up and down movement of the actuator 32.

[0056] In this disclosure, at least the second ends of the first stationary terminal 11, the second stationary terminal 12, and the first moving terminal 21 extend out of the first cover 41 and the second cover 42. The second ends of all the terminals are provided with punched holes to form external interfaces.

[0057] like Figure 2 As shown, the high-voltage power supply system provided in this disclosure has a first main line connected to an external power source, a second main line connected to electrical equipment, a first branch line 111 connected to a first stationary terminal 11, a second branch line 121 connected to a second stationary terminal 12, a third branch line 211 connected to a first moving terminal 21, and a fourth branch line 221 connected to a second moving terminal 22. The first branch line 111 is equipped with at least one battery module M1, M2 and a first switching element K1. The third branch line 211 is equipped with at least one battery module M3, M4 and a second switching element K2. The main line is equipped with at least one third switching element K3, K4. By controlling the drive component 3 and multiple switching elements K1, K2, K3, K4 in the double-pole double-throw switch, switching between different voltage platforms can be achieved to realize rapid charging and external discharging of the battery modules. The control logic is simple and easy to implement. Of course, this disclosure also includes embodiments with only a first main circuit, which can realize the switching between high-voltage series charging and low-voltage parallel charging. This disclosure also includes embodiments with only a second main circuit, which is only used for external discharge. In these two embodiments, the above-mentioned opening and closing components can be omitted without affecting the realization of the above functions, and both are within the protection scope of this disclosure.

[0058] When charging the battery module, such as Figure 4 As shown, the first opening / closing element K1, the second opening / closing element K2, and at least one third opening / closing element K3, K4 are closed; the first moving terminal 21 and the first stationary terminal 11 are engaged, and the first moving terminal 21 and the second stationary terminal 12 are disengaged; the second moving terminal 22 and the first stationary terminal 11 are disengaged, and multiple battery modules M1, M2, M3, and M4 are connected in series to achieve 800V series charging; as shown Figure 5 As shown, the first opening / closing element K1, the second opening / closing element K2, and at least one third opening / closing element K3, K4 are closed, the first moving terminal 21 and the second stationary terminal 12 are engaged, the first moving terminal 21 and the first stationary terminal 11 are disengaged, and the second moving terminal 22 and the first stationary terminal 11 are engaged. Multiple battery modules M1, M2, M3, and M4 are connected in parallel to achieve 400V parallel charging. When the battery modules discharge externally, as... Figure 6As shown, when the first opening / closing element K1 and the second opening / closing element K2 are closed, the first moving terminal 21 and the first stationary terminal 11 are engaged, and the first moving terminal 21 and the second stationary terminal 12 are disconnected; the second moving terminal 22 and the first stationary terminal 11 are disconnected, and multiple battery modules M1, M2, M3 and M4 are connected in series to discharge to the outside.

[0059] According to a third aspect of this disclosure, a vehicle is provided that includes the high-voltage power supply system described above, the vehicle having all the beneficial effects of the aforementioned double-pole double-throw switch and high-voltage power supply system, which will not be elaborated here.

[0060] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0061] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0062] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0063] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0064] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0066] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0067] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0068] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0069] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A double-pole double-throw switch, characterized in that, It includes a first stationary terminal, a second stationary terminal, a first moving terminal, a second moving terminal, and a drive assembly for driving the first moving terminal and the second moving terminal to move synchronously, wherein the first moving terminal selectively engages with one of the first stationary terminal and the second stationary terminal and disconnects from the other, and the second moving terminal engages with or disconnects from the first stationary terminal.

2. The double-pole double-throw switch according to claim 1, characterized in that, The second moving terminal, the first stationary terminal, the first moving terminal, and the second stationary terminal are arranged in sequence along a first direction. The first moving terminal and the second moving terminal move synchronously along the first direction. The first stationary terminal has a main body portion arranged parallel to the first moving terminal and an overlapping portion that overlaps the first moving terminal. The first moving terminal is located between the overlapping portion and the second stationary terminal.

3. The double-pole double-throw switch according to claim 2, characterized in that, The end of the second moving terminal overlaps the main body, and the second moving terminal and the overlapping portion are located on both sides of the main body and arranged in parallel.

4. The double-pole double-throw switch according to claim 2, characterized in that, The second stationary terminal is arranged parallel to and partially overlaps with the first moving terminal.

5. The double-pole double-throw switch according to claim 1, characterized in that, The drive assembly includes a drive element and an actuator connected to the output end of the drive element. The first moving terminal and the second moving terminal are respectively fixed on the actuator. The drive element drives the first moving terminal and the second moving terminal to move synchronously through the actuator.

6. The double-pole double-throw switch according to claim 5, characterized in that, The driving component is a motor, and the actuator is threadedly connected to a connecting rod. The connecting rod is connected to the output end of the motor, and an elastic element is sleeved on the connecting rod. The two ends of the elastic element abut against the output end of the motor and the actuator, respectively.

7. The double-pole double-throw switch according to claim 5, characterized in that, The driving component is an electromagnetic actuator, the actuator is provided with a connecting rod, the electromagnetic actuator is provided with an opening, the connecting rod is located in the opening, and the electromagnetic actuator drives the actuator to move along the axial direction of the connecting rod.

8. The double-pole double-throw switch according to claim 5, characterized in that, The actuator has an adjacent first side and a second side, and the first side and the second side are respectively provided with a protruding fork-shaped structure. One end of the first moving terminal and the second moving terminal are respectively provided with a socket for the fork-shaped structure to extend into.

9. The double-pole double-throw switch according to claim 2, characterized in that, The first moving terminal is provided with a connection contact point at the position where it connects to the first stationary terminal and the second stationary terminal; and / or, the second moving terminal is provided with a connection contact point at the position where it connects to the first stationary terminal.

10. The double-pole double-throw switch according to claim 2, characterized in that, The first moving terminal and the second moving terminal are provided with arched portions.

11. The double-pole double-throw switch according to claim 1, characterized in that, It also includes a first cover and a second cover that are fastened together, wherein the first cover and / or the second cover are provided with at least one of a first limiting groove, a second limiting groove and a third limiting groove; The first limiting groove and the second limiting groove extend along the width direction. The first limiting groove is used to accommodate the first moving terminal and the second stationary terminal. The second limiting groove is used to accommodate the main body of the first stationary terminal. The third limiting groove extends along the length direction to accommodate the second moving terminal.

12. The double-pole double-throw switch according to claim 11, characterized in that, At least the ends of the first stationary terminal, the second stationary terminal, and the first moving terminal extend out of the first cover and the second cover.

13. The double-pole double-throw switch according to any one of claims 1-12, characterized in that, The double-pole double-throw switch has a first state and a second state, and the driving component reciprocates along a first direction to switch between the first state and the second state, wherein... In the first state, the first moving terminal and the first stationary terminal are engaged, and the first moving terminal and the second stationary terminal are disconnected; the second moving terminal and the first stationary terminal are disconnected, so that multiple loads connected to the double-pole double-throw switch are connected in series. In the second state, the first moving terminal and the first stationary terminal are disconnected, and the first moving terminal and the second stationary terminal are engaged; the second moving terminal and the first stationary terminal are engaged to allow multiple loads connected to the double-pole double-throw switch to be connected in parallel.

14. A high-voltage power supply system, characterized in that, Includes a power battery and a double-pole double-throw switch as described in any one of claims 1-13.

15. A vehicle, characterized in that, Includes the high-voltage power supply system as described in claim 14.

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