A new energy vehicle circuit overheating protection device

Abstract

The present invention relates to the technical field of abnormal temperature protection of circuits, and specifically to an overheating protection device for circuits of new energy vehicles, comprising a frame, and also comprising: two groups of wiring position-changing power connection structures connected to the frame; two groups of temperature-changing liquid supply structures connected to the frame; a vertical separation structure connected to the frame, the vertical separation structure comprising a power box, a diversion chamber is provided in the power box, the diversion chamber is connected to a deflation push part through a first hydraulic tube chamber, the diversion chamber is connected to an elastic telescopic blocking structure through a second hydraulic tube chamber, and the elastic telescopic blocking structure is connected to a drop frame. In the present invention, when the wires in the vehicle circuit heat up, the temperature-changing liquid supply structure presses the hydraulic oil into the vertical separation structure by means of thermal expansion, so that the two groups of wiring position-changing power connection structures are separated by the impact of the vertical separation structure, and the electrical connection state of the two groups of wires is disconnected in time, thereby avoiding the continuous heating of the wires in the vehicle circuit, so as to ensure the integrity of the circuit and realize the overheating power-off protection operation.

Description

Technical Field

[0001] The present invention relates to the technical field of abnormal temperature protection of circuits, and in particular to an overheat protection device for circuits of new energy vehicles. Background Art

[0002] With the increasing consumption of oil resources and the gradual increase in people's environmental awareness, more and more consumers are no longer choosing cars that are powered by gasoline or diesel, but are turning to hybrid cars or electric cars as their means of transportation. Hybrid cars and electric cars have the advantages of low fuel consumption and low emissions, and have broad development prospects.

[0003] Both hybrid vehicles and electric vehicles need to be equipped with a high-voltage distribution box, which is connected to the energy storage system (such as the on-board battery pack) through the wires in the circuit, and provides the power provided by the energy storage system to external electrical devices. During the vehicle design, manufacturing and testing phases, the vehicle circuit needs to be tested and inspected. The wires in the circuit often cause abnormal heating due to excessive load or substandard quality. At this time, the wires may spontaneously combust due to overheating, and then cause a fire, posing a safety hazard. Therefore, circuit overheating protection equipment is urgently needed to achieve overheating power-off of the vehicle circuit to avoid damage to the vehicle circuit due to overheating and spontaneous combustion of the wires. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle circuit overheating protection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A new energy vehicle circuit overheat protection device includes a frame and also includes:

[0007] Two sets of wiring position changing power connection structures connected to the rack;

[0008] Two sets of temperature-variable liquid supply structures connected to the rack;

[0009] A vertical separation structure connected to a frame, the vertical separation structure includes a power box connected to the frame, two groups of diversion chambers are opened in the power box, the diversion chambers are connected to the temperature-changing fluid supply structure, the diversion chambers are filled with hydraulic oil, the diversion chambers are connected to a deflation push part through a first hydraulic pipe cavity, the deflation push part is connected to a hanging chamber opened in the power box, the diversion chamber is connected to an elastic telescopic blocking structure through a second hydraulic pipe cavity, the elastic telescopic blocking structure is movably connected to a hanging frame slidably connected to the hanging chamber, a triangular impact block is fixedly installed at the bottom of the hanging frame, and a counterweight block is fixedly installed in the middle of the triangular impact block.

[0010] As a further improvement of the present invention: the wiring displacement power connection structure includes a guide sleeve connected to the frame, a third spring is fixedly installed in the guide sleeve, the third spring is fixedly connected to a connecting frame slidably connected to the guide sleeve, the connecting frame is fixedly connected to a ladder frame adapted to the triangular impact block, the movable end of the connecting frame is fixedly connected to a first plug connector, and the first plug connector is connected to a wiring head fixedly connected to the frame through a cable.

[0011] As a further improvement of the present invention: the temperature-changing liquid supply structure includes an extension plate fixedly connected to the frame, the extension plate is fixedly connected to an arc-shaped guide sleeve, the arc-shaped guide sleeve is fixedly connected to a heat-conducting block, a heat exchange cavity is defined in the arc-shaped guide sleeve, one end of the heat-conducting block extends into the heat exchange cavity, the heat exchange cavity is filled with mercury, a first spring is installed in the heat exchange cavity, the first spring is fixedly connected to an arc-shaped bar, the arc-shaped bar is slidably connected to the heat exchange cavity, the arc-shaped bar is fixedly connected to two groups of inclined extrusion blocks, the frame is fixedly connected to a hydraulic box, the hydraulic box is slidably connected to a pressure block matched with the inclined extrusion block, a second spring is installed between the pressure block and the hydraulic box, the hydraulic box is fixedly connected to a hydraulic pipe via a manifold, and the hydraulic pipe is communicated with the diversion cavity.

[0012] As a further improvement of the present invention: the arc-shaped guide sleeve is fixedly connected to a heat-insulating wire support frame.

[0013] As a further improvement of the present invention: the power box is fixedly connected with a wireless communication module, the arc-shaped guide sleeve is fixedly connected with an extension arm, the extension arm is fixedly connected with an infrared temperature probe, and the wireless communication module is communicatively connected with the infrared temperature probe.

[0014] As a further improvement of the present invention: the deflation pushing part includes a threaded joint fixedly connected to the power box, the threaded joint is movably connected to the gas cylinder, the threaded joint is connected to an air guide cavity opened in the power box, the air guide cavity is connected to the hanging cavity, the air guide cavity is slidably connected to an isolation plate, a vent is opened on the isolation plate, the isolation plate is slidably connected to a first hydraulic cavity opened in the power box, and the first hydraulic cavity is connected to the first hydraulic pipe cavity.

[0015] As a further improvement of the present invention: the elastic telescopic blocking structure includes a second hydraulic chamber connected to the second hydraulic tube chamber, the second hydraulic chamber is slidably connected to an I-shaped block, the I-shaped block is fixedly connected to a fourth spring, the fourth spring is fixedly connected to a sphere, the sphere is movably connected to the drop frame, the sphere is movably connected to an annular blocking block, and the annular blocking block is fixedly installed in the power box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The two groups of wires that need to be connected in the automobile circuit are respectively connected to the two groups of wiring position change connection structures, and the wires all pass through the temperature-variable fluid supply structure and contact with the temperature-variable fluid supply structure. Under normal conditions, the two groups of wiring position change connection structures are in a mutually connected state, so that the two groups of wires in the automobile circuit are electrically connected. As the temperature of the wires in the automobile circuit increases, the temperature-variable fluid supply structure is heated and hydraulic oil is pressed into the diversion cavity. At this time, the hydraulic oil enters the first hydraulic tube cavity and the second hydraulic tube cavity respectively, so that the deflation push part fills the gas in the drop cavity, and the elastic telescopic blocking structure contracts, so that under the push of the high-pressure air in the drop cavity, the drop frame slides down along the drop cavity, and the drop frame drives the triangular impact block to impact the wiring position change connection structure, so that the two groups of wiring position change connection structures are impacted and separated from each other, thereby disconnecting the electrical connection of the vehicle wires, and the counterweight block of the triangular impact block is used to increase the impact force of the triangular impact block on the wiring position change connection structure. When the wires in the vehicle circuit heat up, the temperature-variable liquid supply structure presses the hydraulic oil into the vertical separation structure by means of thermal expansion, so that the two groups of wiring position-variable power connection structures are separated by the impact of the vertical separation structure, and the electrical connection state of the two groups of wires is disconnected in time, thereby preventing the wires in the vehicle circuit from heating up continuously, ensuring the integrity of the circuit, and realizing the overheating power-off protection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the vertical separation structure of the present invention;

[0020] Figure 3 For the present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the arc guide sleeve, heat conduction block, arc strip, heat insulation wire support frame, inclined extrusion block, extension arm and infrared temperature probe of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the arc-shaped guide sleeve, heat exchange cavity, heat insulation wire support frame, heat conductive block, arc strip, inclined extrusion block, extension arm and infrared temperature probe of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the hydraulic box and the pressure block of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the cooperation between the guide sleeve and the connecting frame of the present invention.

[0025] In the figure: 1, frame; 2, wiring position change power connection structure; 3, temperature change liquid supply structure; 4, vertical separation structure; 5, power box; 6, diversion chamber; 8, first hydraulic tube chamber; 9, deflation push part; 10, vertical chamber; 11, second hydraulic tube chamber; 12, elastic telescopic blocking structure; 13, vertical frame; 14, triangular impact block; 15, counterweight block; 16, guide sleeve; 17, connecting frame; 18, ladder frame; 19, first plug connector; 20, wiring head; 21, extension plate; 22, arc shaped guide sleeve; 23, heat conduction block; 24, heat exchange chamber; 26, arc strip; 27, inclined extrusion block; 28, hydraulic box; 29, pressure block; 30, manifold; 31, hydraulic pipe; 32, heat insulation support rack; 33, wireless communication module; 34, extension arm; 35, infrared temperature probe; 36, threaded joint; 37, gas cylinder; 38, gas guide chamber; 39, isolation plate; 40, first hydraulic chamber; 41, second hydraulic chamber; 42, I-shaped block; 43, sphere; 44, annular blocking block. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0027] Example 1, see Figure 1 to Figure 7 As shown, a new energy vehicle circuit overheat protection device includes a frame 1 and also includes:

[0028] Two sets of wiring position changing and power connection structures 2 connected to the rack 1;

[0029] Two sets of temperature-variable liquid supply structures 3 connected to the frame 1;

[0030] A vertical separation structure 4 connected to the frame 1, the vertical separation structure 4 includes a power box 5 connected to the frame 1, two groups of diversion chambers 6 are opened in the power box 5, the diversion chamber 6 is connected to the temperature-changing liquid supply structure 3, the diversion chamber 6 is filled with hydraulic oil, the diversion chamber 6 is connected to the deflation push part 9 through the first hydraulic pipe cavity 8, the deflation push part 9 is connected to the hanging chamber 10 opened in the power box 5, the diversion chamber 6 is connected to the elastic telescopic blocking structure 12 through the second hydraulic pipe cavity 11, the elastic telescopic blocking structure 12 is movably connected to the hanging frame 13 slidably connected to the hanging chamber 10, a triangular impact block 14 is fixedly installed at the bottom of the hanging frame 13, and a counterweight block 15 is fixedly installed in the middle of the triangular impact block 14.

[0031] The two groups of wires that need to be connected in the automobile circuit are respectively connected to the two groups of wiring position-changing power connection structures 2, and the wires all pass through the temperature-changing fluid supply structure 3 and contact the temperature-changing fluid supply structure 3. Under normal conditions, the two groups of wiring position-changing power connection structures 2 are in a mutually connected state, so that the two groups of wires in the automobile circuit are electrically connected. As the temperature of the wires in the automobile circuit increases, the temperature-changing fluid supply structure 3 is heated and hydraulic oil is pressed into the diversion cavity 6. At this time, the hydraulic oil enters the first hydraulic tube cavity 8 and the second hydraulic tube cavity 11 respectively, from The deflation pushing part 9 fills the gas in the hanging cavity 10, and the elastic telescopic blocking structure 12 contracts, so that under the push of the high-pressure air in the hanging cavity 10, the hanging frame 13 slides down along the hanging cavity 10, and the hanging frame 13 drives the triangular impact block 14 to impact the wiring displacement connection structure 2, so that the two groups of wiring displacement connection structures 2 are impacted and separated from each other, thereby disconnecting the electrical connection of the vehicle wires, and the counterweight block 15 of the triangular impact block 14 is used to increase the impact force of the triangular impact block 14 on the wiring displacement connection structure 2. In the present invention, when the wires in the vehicle circuit heat up, the temperature-variable liquid supply structure 3 presses the hydraulic oil into the hanging separation structure 4 by thermal expansion, so that the two groups of wiring displacement connection structures 2 are impacted and separated by the hanging separation structure 4, and the electrical connection state of the two groups of wires is disconnected in time, thereby avoiding the continuous heating of the wires in the vehicle circuit, to ensure the circuit integrity, and realize the overheating power-off protection operation.

[0032] In one case of this embodiment, the wiring displacement connection structure 2 includes a guide sleeve 16 connected to the frame 1, a third spring is fixedly installed in the guide sleeve 16, the third spring is fixedly connected to a connecting frame 17 slidably connected to the guide sleeve 16, the connecting frame 17 is fixedly connected to a ladder frame 18 adapted to the triangular impact block 14, and the movable end of the connecting frame 17 is fixedly connected to a first plug connector 19, and the first plug connector 19 is connected to a wiring head 20 fixedly connected to the frame 1 through a cable. The wiring head 20 is used to connect the wires of the vehicle circuit, and the two groups of first plug connectors 19 are connected to each other to achieve electrical connection between the two groups of wires. The triangular impact block 14 is used to drive the connecting frame 17 to move away from each other under the impact of the ladder frame 18, during which the connecting frame 17 compresses the third spring and slides relative to the guide sleeve 16.

[0033] In one case of the present embodiment, the temperature-variable liquid supply structure 3 includes an extension plate 21 fixedly connected to the frame 1, the extension plate 21 is fixedly connected to an arc-shaped guide sleeve 22, the arc-shaped guide sleeve 22 is fixedly connected to a heat-conducting block 23, a heat-exchange chamber 24 is defined in the arc-shaped guide sleeve 22, one end of the heat-conducting block 23 extends into the heat-exchange chamber 24, the heat-exchange chamber 24 is filled with mercury, a first spring is installed in the heat-exchange chamber 24, the first spring is fixedly connected to an arc-shaped bar 26, the arc-shaped bar 26 is slidably connected to the heat-exchange chamber 24, the arc-shaped bar 26 is fixedly connected to two groups of inclined surface extrusion blocks 27, the frame 1 is fixedly connected to a hydraulic box 28, the hydraulic box 28 is slidably connected to a pressure block 29 matched with the inclined surface extrusion block 27, a second spring is installed between the pressure block 29 and the hydraulic box 28, the hydraulic box 28 is fixedly connected to a hydraulic pipe 31 through a manifold 30, and the hydraulic pipe 31 is communicated with the diversion chamber 6. The wire is attached to the heat-conducting block 23, and the heat-conducting block 23 conducts heat to the mercury in the heat exchange chamber 24. As the mercury expands due to heat, the mercury pushes the arc strip 26 to move, and the arc strip 26 drives the inclined surface extrusion block 27 to move, so that the inclined surface extrusion block 27 presses the pressure block 29. At this time, the pressure block 29 presses the hydraulic oil in the hydraulic box 28 into the hydraulic pipe 31 through the manifold 30 to supply hydraulic oil to the diversion chamber 6.

[0034] In one case of this embodiment, the arc-shaped guide sleeve 22 is fixedly connected with a heat-insulating wire support frame 32. The heat-insulating wire support frame 32 is used to support the wires to prevent the wires from rubbing against the arc-shaped strip 26.

[0035] In one case of this embodiment, the power box 5 is fixedly connected with a wireless communication module 33, the arc-shaped guide sleeve 22 is fixedly connected with an extension arm 34, the extension arm 34 is fixedly connected with an infrared temperature probe 35, and the wireless communication module 33 is in communication connection with the infrared temperature probe 35. The infrared temperature probe 35 is used to detect the surface temperature of the wire, and the signal sent by the infrared temperature probe 35 transmits the collected data to the remote control platform through the wireless communication module 33.

[0036] In one case of the present embodiment, the deflation pushing part 9 includes a threaded joint 36 fixedly connected to the power box 5, the threaded joint 36 is movably connected to a gas cylinder 37, the threaded joint 36 is connected to a gas guide cavity 38 provided in the power box 5, the gas guide cavity 38 is connected to the hanging cavity 10, the gas guide cavity 38 is slidably connected to a partition plate 39, the partition plate 39 is provided with a vent hole, the partition plate 39 is slidably connected to a first hydraulic cavity 40 provided in the power box 5, and the first hydraulic cavity 40 is connected to the first hydraulic tube cavity 8. The hydraulic oil enters the first hydraulic cavity 40 through the first hydraulic tube cavity 8, so that the hydraulic oil pushes the partition plate 39 to move, so that the vent hole is located in the gas guide cavity 38, thereby releasing the state in which the gas guide cavity 38 is separated by the partition plate 39, so that the high-pressure air in the gas cylinder 37 enters the hanging cavity 10 through the gas guide cavity 38, thereby performing an inflating operation on the hanging cavity 10.

[0037] Embodiment 2, based on embodiment 1, refer to Figure 1 and Figure 2 The elastic telescopic blocking structure 12 includes a second hydraulic chamber 41 connected to the second hydraulic chamber 11, the second hydraulic chamber 41 is slidably connected to an I-shaped block 42, the I-shaped block 42 is fixedly connected to a fourth spring, the fourth spring is fixedly connected to a ball 43, the ball 43 is slidably installed in the power box 5, the ball 43 is movably connected to the drop frame 13, the ball 43 is movably connected to an annular blocking block 44, and the annular blocking block 44 is fixedly installed in the power box 5. The hydraulic oil enters the second hydraulic chamber 41 through the second hydraulic chamber 11. Under the push of the hydraulic oil on the I-shaped block 42, the I-shaped block 42 pulls the fourth spring to reduce the pressure of the fourth spring on the ball 43. At this time, due to the increase in the thrust of the high-pressure air on the drop frame 13, the drop frame 13 presses the ball 43, so that the ball 43 is separated from the annular blocking block 44, so that the drop frame 13 performs a falling operation under the action of air pressure and gravity.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A new energy vehicle circuit overheat protection device, comprising a frame, characterized in that: Also includes: Two sets of wiring position changing power connection structures connected to the rack; Two sets of temperature-variable liquid supply structures connected to the rack; A vertical separation structure connected to a frame, the vertical separation structure includes a power box connected to the frame, two groups of diversion chambers are opened in the power box, the diversion chambers are connected to the temperature-changing fluid supply structure, the diversion chambers are filled with hydraulic oil, the diversion chambers are connected to a deflation push part through a first hydraulic pipe cavity, the deflation push part is connected to a hanging chamber opened in the power box, the diversion chamber is connected to an elastic telescopic blocking structure through a second hydraulic pipe cavity, the elastic telescopic blocking structure is movably connected to a hanging frame slidably connected to the hanging chamber, a triangular impact block is fixedly installed at the bottom of the hanging frame, and a counterweight block is fixedly installed in the middle of the triangular impact block.

2. A new energy vehicle circuit overheating protection device according to claim 1, characterized in that: The wiring displacement power connection structure includes a guide sleeve connected to the frame, a third spring is fixedly installed in the guide sleeve, the third spring is fixedly connected to a connecting frame slidably connected to the guide sleeve, the connecting frame is fixedly connected to a ladder frame adapted to the triangular impact block, the movable end of the connecting frame is fixedly connected to a first plug connector, and the first plug connector is connected to a wiring head fixedly connected to the frame through a cable.

3. A new energy vehicle circuit overheating protection device according to claim 1, characterized in that: The temperature-changing liquid supply structure includes an extension plate fixedly connected to the frame, the extension plate is fixedly connected to an arc-shaped guide sleeve, the arc-shaped guide sleeve is fixedly connected to a heat-conducting block, a heat-exchange cavity is defined in the arc-shaped guide sleeve, one end of the heat-conducting block extends into the heat-exchange cavity, the heat-exchange cavity is filled with mercury, a first spring is installed in the heat-exchange cavity, the first spring is fixedly connected to an arc-shaped bar, the arc-shaped bar is slidably connected to the heat-exchange cavity, the arc-shaped bar is fixedly connected to two groups of inclined extrusion blocks, the frame is fixedly connected to a hydraulic box, the hydraulic box is slidably connected to a pressure block matched with the inclined extrusion block, a second spring is installed between the pressure block and the hydraulic box, the hydraulic box is fixedly connected to a hydraulic pipe via a manifold, and the hydraulic pipe is communicated with the diversion cavity.

4. A new energy vehicle circuit overheat protection device according to claim 3, characterized in that: The arc-shaped guide sleeve is fixedly connected with a heat-insulating wire support frame.

5. A new energy vehicle circuit overheat protection device according to claim 3, characterized in that: The power box is fixedly connected with a wireless communication module, the arc-shaped guide sleeve is fixedly connected with an extension arm, the extension arm is fixedly connected with an infrared temperature probe, and the wireless communication module is communicatively connected with the infrared temperature probe.

6. A new energy vehicle circuit overheat protection device according to claim 1, characterized in that: The deflation pushing part includes a threaded joint fixedly connected to the power box, the threaded joint is movably connected to a gas cylinder, the threaded joint is connected to an air guide cavity opened in the power box, the air guide cavity is connected to the hanging cavity, the air guide cavity is slidably connected to an isolation plate, a vent hole is opened on the isolation plate, the isolation plate is slidably connected to a first hydraulic cavity opened in the power box, and the first hydraulic cavity is connected to the first hydraulic pipe cavity.

7. A new energy vehicle circuit overheat protection device according to claim 1, characterized in that: The elastic telescopic blocking structure includes a second hydraulic chamber connected to the second hydraulic tube chamber, the second hydraulic chamber is slidably connected to an I-shaped block, the I-shaped block is fixedly connected to a fourth spring, the fourth spring is fixedly connected to a sphere, the sphere is movably connected to the drop frame, the sphere is movably connected to an annular blocking block, and the annular blocking block is fixedly installed in the power box.

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