Solid-state relay for lithium battery BMS

Abstract

The invention relates to the technical field of relays, in particular to a solid-state relay for a lithium battery BMS, which comprises a relay mechanism, the relay mechanism comprises a body, the body is provided with a heat dissipation mechanism, the heat dissipation mechanism comprises a shell detachably connected to the body, the top end of the shell is fixedly connected with a motor, and the top end of the motor is fixedly connected with a power supply. The output end of the motor extends downwards into the shell, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly sleeved with a shaft sleeve, the shaft sleeve is fixedly connected with fan blades, an air outlet is formed in the top end of the shell, and an air inlet is formed in the bottom end of the side face of the shell; the relay has the beneficial effects that the heat dissipation mechanism is arranged to dissipate heat of the relay, so that the working performance and the service life of the relay are prevented from being affected by heat generated in the working process of the relay.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of relays, in particular to a solid-state relay for lithium battery BMS. BACKGROUND

[0002] A solid-state relay (SSR) is a non-contact electronic switching device based on semiconductor technology. It uses electronic components to achieve the opening and closing of circuits without any physical moving parts. Compared with traditional electromagnetic relays, solid-state relays have higher reliability, longer service life, faster switching speed, lower noise, and other advantages.

[0003] A solid-state relay generally consists of three parts: an input control terminal (for receiving control signals), an isolation (coupling) part, and an output control terminal (for switching load current). The isolation part often uses an optocoupler to achieve electrical isolation between the input and output to ensure safety. According to different application requirements, solid-state relays can handle various load types from small DC signals to high-power AC signals.

[0004] Solid-state relays have a wide range of applications, including but not limited to industrial automation, household appliances, temperature control, motor control, and other fields. Due to their non-contact nature, they are particularly suitable for applications that require frequent switching and have requirements for explosion-proof and dust-proof. However, it is important to note that solid-state relays will have a certain voltage drop when conducting, which will generate heat. Overheating can negatively affect the performance and lifespan of solid-state relays.

[0005] Therefore, there is a need for a solid-state relay for lithium battery BMS to solve the above problems. SUMMARY

[0006] To solve the above problems, i.e., to solve the problem that relays are prone to overheating during use, affecting performance and service life, the application provides a solid-state relay for lithium battery BMS.

[0007] A solid-state relay for lithium battery BMS, comprising a relay mechanism, the relay mechanism comprising a body, a heat dissipation mechanism is arranged on the body, the heat dissipation mechanism comprising a housing arranged on the body, a motor is fixedly connected to the top end of the housing, the output end of the motor extends downward into the housing, a rotating shaft is fixedly connected to the output end of the motor, a shaft sleeve is fixedly sleeved on the rotating shaft, a fan blade is fixedly connected to the shaft sleeve, an air outlet is formed in the top end of the housing, and an air inlet is formed in the side bottom end of the housing.

[0008] Specifically, when using the relay, start the motor, the output end of the motor drives the rotating shaft to rotate, the rotating shaft drives the shaft sleeve to rotate, the shaft sleeve drives the fan blades to rotate, and the fan blades drive the air flow in the shell, so that the external space enters the shell from the air inlet at the bottom end of the shell, and then the air is discharged from the air outlet at the top end of the shell under the driving action of the fan blades. During the flow of air in the shell, the heat generated during the operation of the relay is brought out.

[0009] By setting the heat dissipation mechanism, the heat dissipation mechanism can be installed on the relay mechanism through the setting of the shell, and the detachable setting of the shell and the main body can facilitate the modification of the existing relay, which is conducive to the promotion and use of the present invention. In addition, by setting the fan blades, the rotation of the motor can drive the fan blades to rotate, and the heat generated during the operation of the relay can be brought out from the air outlet to dissipate the heat of the relay, thereby preventing the heat generated during the operation of the relay from affecting the working performance and service life of the relay.

[0010] Furthermore, the relay mechanism is existing technology and will not be described in detail.

[0011] Preferably, a group of air inlet channels are provided at the bottom ends of the four vertical side surfaces of the shell, and the air inlet channels include at least nine air inlets arranged at equal intervals in the horizontal direction.

[0012] By setting the air inlet at the bottom end of the side of the shell, external air can enter the shell, thereby facilitating heat dissipation of the relay.

[0013] Preferably, the relay mechanism further comprises four mounting slots arranged in a matrix on the main body, each of the mounting slots is provided with a mounting hole, and each of the mounting holes is rotatably provided with a bolt.

[0014] Specifically, when using, when installing the relay, place the wire between the bolt and the bottom wall of the installation slot, then rotate the bolt so that the bolt presses the wire between the bolt and the installation slot; when the wire needs to be removed from the relay, unscrew the bolt from the installation position.

[0015] The arrangement of bolts makes it easy to install and disassemble the relay and wires.

[0016] Preferably, the bolt connection is provided with a disassembly mechanism, the disassembly mechanism includes a disassembly piece fixedly connected to the bolt, the disassembly piece includes a rod sleeve fixedly connected to the bolt, an extension rod is slidably connected in the rod sleeve, a groove is provided in the rod sleeve, a protrusion is fixedly connected to the extension rod, the protrusion is slidably connected in the groove, the top end of the extension rod is fixedly connected to the first pulley, the top end of the first pulley is rotatably connected to the mounting plate, the top surface of the first pulley is provided with an annular T-shaped sliding groove, the bottom surface of the mounting plate is symmetrically fixedly connected with two T-shaped sliders, the T-shaped sliders are slidably connected in the T-shaped sliding groove, and the mounting plate is fixedly connected to the shell.

[0017] Specifically, when using, when the relay needs to be installed, the four bolts are aligned with the four threaded holes at the installation position, and then the first pulley is rotated, the first pulley drives the extension rod to rotate, the rotation of the extension rod drives the rod sleeve to rotate, the rod sleeve drives the bolts to rotate, so that the bolts are screwed into the threaded holes at the installation position, and the bolts drive the rod sleeve to move downward; when the relay needs to be removed, the first pulley is rotated in the opposite direction, the first pulley drives the rod sleeve to rotate in the opposite direction, the rod sleeve drives the bolts to rotate in the opposite direction, so that the bolts are screwed out of the threaded holes at the installation position, and the bolts drive the rod sleeve to move upward.

[0018] By setting the disassembly piece, the bolt can be rotated by rotating the first pulley, thereby facilitating the connection between the bolt and the threaded hole at the installation position and facilitating the installation and disassembly of the wires connected to the relay.

[0019] Preferably, the disassembly mechanism also includes a transmission member, which includes four driven shafts arranged in the shell, and the four driven shafts are arranged in a matrix in the shell. The driven shafts are rotatably connected to the top wall of the shell, and a second pulley is fixedly sleeved on the driven shaft. A transmission belt is connected between the second pulley and the first pulley for transmission, a through hole is opened on the shell, and the transmission belt passes through the through hole, and a power member is arranged between the driven shaft and the rotating shaft.

[0020] Specifically, when in use, the rotating shaft drives the power member to rotate, the power member drives the driven shaft to rotate, the driven shaft drives the second pulley to rotate, the second pulley drives the transmission belt to rotate, and the transmission belt drives the first pulley to rotate.

[0021] By setting the transmission member, the rotation of the rotating shaft can drive the driven shaft to rotate through the power member, thereby driving the first pulley to rotate through the second pulley and the transmission belt, so that the bolt can rotate.

[0022] Preferably, the power member includes a driving gear slidingly sleeved on the rotating shaft, a spline is fixedly provided on the rotating shaft, a spline groove is provided on the inner ring surface of the driving gear, and the spline is slidably connected in the spline groove, and the top wall of the shell is symmetrically rotated and connected to two driving shafts, the driving shaft is located between the two driven shafts, a transmission gear is fixedly sleeved on the driving shaft, the transmission gear is meshed with the driving gear, the driven shaft is fixedly sleeved with a driven gear, and a linkage gear is fixedly sleeved on the driving shaft, and the driven gear is meshed with the linkage gear.

[0023] Specifically, when in use, when the rotating shaft rotates, the rotating shaft drives the driving gear to rotate, the driving gear drives the transmission gear to rotate, the transmission gear drives the driving shaft to rotate, the driving shaft drives the linkage gear to rotate, the linkage gear drives the driven gear to rotate, and the driven gear drives the driven shaft to rotate.

[0024] By setting the power part, the rotation of the rotating shaft can drive the driven shaft to rotate through the driving gear and the driven gear, thereby causing the bolt to rotate, making it easier to install and remove the wires on the relay.

[0025] Preferably, two electric push rods are symmetrically fixedly connected to the top surface of the main body, and a ball is rotatably connected to the top of the electric push rod. The ball contacts the bottom surface of the driving gear, and a spring is sleeved on the rotating shaft, and the spring is located between the driving gear and the shaft sleeve.

[0026] Specifically, in the initial state, the output end of the electric push rod extends upward, the driving gear compresses the spring upward, and the driving gear disengages from the transmission gear; when the bolt needs to be rotated, the electric push rod is started, the output end of the electric push rod moves downward, and the driving gear moves downward under the action of the spring, so that the driving gear engages with the transmission gear, so that the driving gear drives the transmission gear to rotate.

[0027] By setting the electric push rod, the driving gear can move up and down, thereby controlling the rotation of the bolt, making it convenient to quickly remove the wires from the relay in an emergency.

[0028] Furthermore, the electric push rod is a prior art and will not be described in detail.

[0029] Furthermore, the shell is made of plastic material.

[0030] Preferably, the relay mechanism also includes a fixed plate arranged on the lower side of the main body, two limit springs are symmetrically connected between the fixed plate and the bottom surface of the main body, two abutment tubes are symmetrically fixedly connected to the fixed plate, and the two limit springs are respectively arranged in the two abutment tubes.

[0031] Specifically, when in use, the fixing plate is installed at the installation position.

[0032] By arranging the fixing plate and the limit spring, the relay body can be installed, making the use of the relay convenient.

[0033] Preferably, two disengagement mechanisms are symmetrically arranged on the main body, and the disengagement mechanism includes a hydraulic cylinder fixedly connected to the main body, a movable plate is slidably connected in the hydraulic cylinder, an extension rod is fixedly connected to the movable plate, the extension rod extends downward out of the hydraulic cylinder, and the bottom end of the extension rod is fixedly connected to the fixed plate.

[0034] Specifically, when in use, when the wires need to be removed from the relay, hydraulic oil is input into the hydraulic cylinder. Under the action of the hydraulic oil, the movable plate is pushed downward, and the movable plate drives the extension rod to move downward. Under the action of the extension rod, the main body moves away from the fixed plate and stretches the limit spring.

[0035] By setting up the disengagement mechanism, when it is necessary to remove the wire from the relay, the bolt can be unscrewed from the threaded hole to loosen the wire. The extension rod can be used to move the body away from the fixing plate, so that the wire is completely disengaged from the bolt, thereby facilitating power off in an emergency.

[0036] Preferably, the disengagement mechanism also includes a moving rod that is gap-mounted on the two extension rods on the same side, the bottom surface of the moving rod abuts the top of the rod sleeve, an oil cylinder is fixedly connected to the shell, a push plate is slidably connected in the oil cylinder, a push rod is fixedly connected to the lower side of the push plate, the push rod extends downward and is fixedly connected to the moving rod, a connecting pipe is provided on the oil cylinder, the connecting pipe is connected to the hydraulic cylinder, and the connection point between the connecting pipe and the hydraulic cylinder is located on the upper side of the moving plate.

[0037] Specifically, during use, when the rod sleeve moves upward, the rod sleeve drives the moving rod upward, the moving rod drives the push rod upward, the push rod drives the push plate upward, and the hydraulic oil in the oil cylinder is pressed into the hydraulic cylinder through the connecting pipe, thereby causing the extension rod to extend from the hydraulic cylinder.

[0038] By setting the movable rod, when the rod sleeve moves upward, that is, when the bolt is unscrewed, the hydraulic oil in the oil cylinder is transported to the hydraulic cylinder through the push plate, so that the extension rod extends from the hydraulic cylinder, thereby causing the main body to move, so that the wires are completely separated from the bolts. After power failure, the heat dissipation structure quickly cools the relay, so that it can be put into use again in a short time, thereby improving the risk resistance of the relay.

[0039] The beneficial effects of the present invention are:

[0040] 1. Through the setting of the heat dissipation mechanism, the heat dissipation mechanism can be installed on the relay mechanism through the setting of the shell, and the detachable setting of the shell and the body makes it convenient to modify the existing relay, which is conducive to the promotion and use of the present invention. Moreover, through the setting of the fan blades, the rotation of the motor can drive the fan blades to rotate, and the heat generated during the operation of the relay can be brought out from the air outlet to dissipate the heat of the relay, thereby preventing the heat generated during the operation of the relay from affecting the working performance and service life of the relay.

[0041] 2. By setting up the disassembly part, the bolt can be rotated by rotating the first pulley, thereby facilitating the connection between the bolt and the threaded hole at the installation location and facilitating the installation and removal of the wires connected to the relay. By setting up the transmission part, the rotation of the rotating shaft can drive the driven shaft to rotate through the power part, thereby driving the first pulley to rotate through the second pulley and the transmission belt, thereby enabling the bolt to rotate. By setting up the power part, the rotation of the rotating shaft can drive the driven shaft to rotate through the driving gear and the driven gear, thereby enabling the bolt to rotate, facilitating the installation and removal of the wires on the relay.

[0042] 3. Through the setting of the electric push rod, the driving gear can move up and down, thereby controlling the rotation of the bolt, making it convenient to quickly remove the wires from the relay in an emergency.

[0043] 4. The disengagement mechanism allows the relay to be disconnected from the bolts by unscrewing them from the threaded holes, releasing the wires. The extension rod then moves the relay body away from the fixing plate, completely disconnecting the wires from the bolts and facilitating power outages in emergencies. The movable rod allows the rod sleeve to move upward, unscrewing the bolts, and the push plate transfers hydraulic oil from the cylinder to the hydraulic cylinder, causing the extension rod to extend from the cylinder, allowing the relay body to move, completely disconnecting the wires from the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0045] Figure 2 Schematic diagram of the internal structure of the present invention;

[0046] Figure 3 It is the front view of the present invention;

[0047] Figure 4 For the present invention Figure 3 Isometric section view at center AA;

[0048] Figure 5 For the present invention Figure 3 Isometric section view at the middle BB;

[0049] Figure 6 For the present invention Figure 5 A partial enlarged view of point C in the middle;

[0050] Figure 7 It is a right side view of the present invention;

[0051] Figure 8 For the present invention Figure 7 Isometric section view at middle DD;

[0052] Figure 9 Schematic diagram of the connection structure between the mounting plate and the first pulley in the present invention.

[0053] In the picture:

[0054] 1. Relay mechanism; 11. Main body; 12. Mounting slot; 13. Bolt; 14. Fixing plate; 15. Limit spring; 16. Abutment cylinder;

[0055] 2. Heat dissipation mechanism; 21. Housing; 22. Motor; 23. Rotating shaft; 24. Bushing; 25. Fan blades; 26. Air outlet; 27. Air inlet;

[0056] 3. Disassembly mechanism; 31. Disassembly member; 311. Rod sleeve; 312. Extension rod; 313. First pulley; 314. Mounting plate; 32. Transmission member; 321. Driven shaft; 322. Second pulley; 323. Transmission belt; 324. Through hole; 33. Power member; 331. Driving gear; 332. Drive shaft; 333. Transmission gear; 334. Driven gear; 335. Linkage gear; 34. Electric push rod; 35. Spring;

[0057] 4. Disengagement mechanism; 41. Hydraulic cylinder; 42. Moving plate; 43. Extension rod; 44. Moving rod; 45. Oil cylinder; 46. Push plate; 47. Push rod; 48. Connecting pipe. DETAILED DESCRIPTION

[0058] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0059] like Figure 1 、 2As shown in Figures 3 and 4, an embodiment of the present invention discloses a solid-state relay for a lithium battery BMS, including a relay mechanism 1, wherein the relay mechanism 1 includes a main body 11, a heat dissipation mechanism 2 is provided on the main body 11, and the heat dissipation mechanism 2 includes a shell 21 provided on the main body 11, a motor 22 is fixedly connected to the top of the shell 21, and the output end of the motor 22 extends downward into the shell 11, and the output end of the motor 22 is fixedly connected to a rotating shaft 23, a shaft sleeve 24 is fixedly provided on the rotating shaft 23, and a fan blade 25 is fixedly connected to the shaft sleeve 24, an air outlet 26 is provided at the top of the shell 21, and an air inlet 27 is provided at the bottom end of the side of the shell 21.

[0060] Specifically, when using the relay, start the motor 22, the output end of the motor 22 drives the rotating shaft 23 to rotate, the rotating shaft 23 drives the shaft sleeve 24 to rotate, the shaft sleeve 24 drives the fan blades 25 to rotate, and the fan blades 25 drive the air in the shell 21 to flow, so that the external space enters the shell 21 from the air inlet 27 at the bottom end of the shell 21, and then the air is discharged from the air outlet 26 at the top end of the shell 21 under the driving action of the fan blades 25. During the flow of air in the shell 21, the heat generated during the operation of the relay is taken out.

[0061] Through the setting of the heat dissipation mechanism 2, the heat dissipation mechanism 2 can be installed on the relay mechanism 1 through the setting of the shell 21, and the detachable setting of the shell 21 and the main body 11 makes it convenient to modify the existing relay, which is conducive to the promotion and use of the present invention. Moreover, through the setting of the fan blades 25, the rotation of the motor 22 can drive the fan blades 25 to rotate, and the heat generated during the operation of the relay can be brought out from the air outlet 26 to dissipate the heat of the relay, thereby preventing the heat generated during the operation of the relay from affecting the working performance and service life of the relay.

[0062] Furthermore, the relay mechanism 1 is a prior art and will not be described in detail.

[0063] like Figure 3 、 7 As shown, a group of air inlet channels are provided at the bottom ends of the four vertical side surfaces of the shell 21 , and the air inlet channels include at least nine air inlets 27 arranged at equal intervals in the horizontal direction.

[0064] By providing the air inlet 27 at the bottom end of the side of the housing 21 , outside air can enter the housing 21 , thereby facilitating heat dissipation of the relay.

[0065] like Figure 2 、 3As shown in FIG5 , the relay mechanism 1 further includes four mounting slots 12 arranged in a matrix on the main body 11 , each of the mounting slots 12 is provided with a mounting hole, and a bolt 13 is rotatably provided in each of the mounting holes.

[0066] Specifically, when using, when installing the relay, place the wire between the bolt 13 and the bottom wall of the installation groove 12, and then rotate the bolt so that the bolt 13 presses the wire between the bolt 13 and the installation groove 12; when the wire needs to be removed from the relay, unscrew the bolt 13 from the installation position.

[0067] The arrangement of the bolts 13 allows the relay and the wires to be installed and disassembled easily.

[0068] like Figure 1 、 2 As shown in , 5, and 9, the bolt 13 is connected to a disassembly mechanism 3, and the disassembly mechanism 3 includes a disassembly piece 31 fixedly connected to the bolt 13, and the disassembly piece 31 includes a rod sleeve 311 fixedly connected to the bolt 13, and an extension rod 312 is slidably connected in the rod sleeve 311, and a groove is provided in the rod sleeve 311, and a protrusion is fixedly connected on the extension rod 312, and the protrusion is slidably connected in the groove, and the top of the extension rod 312 is fixedly connected to a first pulley 313, and the top of the first pulley 313 is rotatably connected to a mounting plate 314, and the top surface of the first pulley 313 is provided with an annular T-shaped sliding groove, and the bottom surface of the mounting plate 314 is symmetrically fixedly connected with two T-shaped sliders, and the T-shaped sliders are slidably connected in the T-shaped sliding groove, and the mounting plate 314 is fixedly connected to the shell 21.

[0069] Specifically, when using, when the relay needs to be installed, the four bolts 13 are aligned with the four threaded holes at the installation position, and then the first pulley 313 is rotated. The first pulley 313 drives the extension rod 312 to rotate, and the rotation of the extension rod 312 drives the rod sleeve 311 to rotate, and the rod sleeve 311 drives the bolt 13 to rotate, so that the bolt 13 is screwed into the threaded hole at the installation position, and the bolt 13 drives the rod sleeve 311 to move downward; when the relay needs to be removed, the first pulley 313 is rotated in the opposite direction, and the first pulley 313 drives the rod sleeve 311 to rotate in the opposite direction, and the rod sleeve 311 drives the bolt 13 to rotate in the opposite direction, so that the bolt 13 is screwed out from the threaded hole at the installation position, and the bolt 13 drives the rod sleeve 311 to move upward.

[0070] By setting the disassembly member 31, the bolt 13 can be rotated by rotating the first pulley 313, thereby facilitating the connection between the bolt 13 and the threaded hole at the installation position and facilitating the installation and removal of the wires connected to the relay.

[0071] like Figure 2 、 5As shown, the disassembly mechanism 3 also includes a transmission member 32, and the transmission member 32 includes four driven shafts 321 arranged in the shell 21. The four driven shafts 321 are arranged in a matrix in the shell 21. The driven shafts 321 are rotatably connected to the top wall of the shell 21. A second pulley 322 is fixedly sleeved on the driven shaft 321. A transmission belt 323 is connected between the second pulley 322 and the first pulley 313. A through hole 324 is opened on the shell 21. The transmission belt 323 passes through the through hole 324. A power member 33 is arranged between the driven shaft 321 and the rotating shaft 23.

[0072] Specifically, during use, the rotating shaft 23 drives the power member 33 to rotate, the power member 33 drives the driven shaft 321 to rotate, the driven shaft 321 drives the second pulley 322 to rotate, the second pulley 322 drives the transmission belt 323 to rotate, and the transmission belt 323 drives the first pulley 313 to rotate.

[0073] By setting the transmission member 32, the rotation of the rotating shaft 23 can drive the driven shaft 321 to rotate through the power member 33, thereby driving the first pulley 313 to rotate through the second pulley 322 and the transmission belt 323, so that the bolt 13 can rotate.

[0074] like Figure 2 、 4 As shown in Figures 5 and 6, the power member 33 includes a driving gear 331 slidably mounted on the rotating shaft 23, a spline is fixedly provided on the rotating shaft 23, a spline groove is provided on the inner ring surface of the driving gear 331, and the spline is slidably connected in the spline groove. The top wall of the housing 21 is symmetrically rotatably connected to two driving shafts 332, the driving shaft 332 is located between the two driven shafts 321, a transmission gear 333 is fixedly mounted on the driving shaft 332, the transmission gear 333 is meshed with the driving gear 331, a driven gear 334 is fixedly mounted on the driven shaft 321, a linkage gear 335 is fixedly mounted on the driving shaft 332, and the driven gear 334 is meshed with the linkage gear 335.

[0075] Specifically, during use, when the rotating shaft 23 rotates, the rotating shaft 23 drives the driving gear 331 to rotate, the driving gear 331 drives the transmission gear 333 to rotate, the transmission gear 333 drives the driving shaft 332 to rotate, the driving shaft 332 drives the linkage gear 335 to rotate, the linkage gear 335 drives the driven gear 334 to rotate, and the driven gear 334 drives the driven shaft 321 to rotate.

[0076] By setting the power member 33, the rotation of the rotating shaft 23 can drive the driven shaft 321 to rotate through the driving gear 331 and the driven gear 334, thereby rotating the bolt 13, which facilitates the installation and removal of the wires on the relay.

[0077] like Figure 4 As shown, two electric push rods 34 are symmetrically fixedly connected to the top surface of the main body 11, and a ball is rotatably connected to the top of the electric push rod 34. The ball contacts the bottom surface of the driving gear 331. A spring 35 is sleeved on the rotating shaft 23, and the spring 35 is located between the driving gear 331 and the shaft sleeve 24.

[0078] Specifically, in the initial state, the output end of the electric push rod 34 extends upward, the driving gear 331 compresses the spring 35 upward, and the driving gear 331 disengages from the transmission gear 333; when the bolt 13 needs to be rotated, the electric push rod 34 is started, the output end of the electric push rod 34 moves downward, and the driving gear 331 moves downward under the action of the spring 35, so that the driving gear 331 engages with the transmission gear 333, so that the driving gear 331 drives the transmission gear 333 to rotate.

[0079] By setting the electric push rod 34, the driving gear 331 can move up and down, thereby controlling the rotation of the bolt 13, making it convenient to quickly remove the wires from the relay in an emergency.

[0080] Furthermore, the electric push rod 34 is a prior art and will not be described in detail.

[0081] Furthermore, the housing 21 is made of plastic material.

[0082] like Figure 4 As shown, the relay mechanism 1 also includes a fixed plate 14 arranged on the lower side of the main body 11, and two limit springs 15 are symmetrically connected between the fixed plate 14 and the bottom surface of the main body 11. Two abutment tubes 16 are symmetrically fixedly connected to the fixed plate 14, and the two limit springs 15 are respectively arranged in the two abutment tubes 16.

[0083] Specifically, when in use, the fixing plate 14 is installed at the installation position.

[0084] By providing the fixing plate 14 and the limiting spring 15 , the relay body 11 can be installed, making the use of the relay convenient.

[0085] like Figure 1 、 4As shown, two disengagement mechanisms 4 are symmetrically arranged on the main body 11, and the disengagement mechanism 4 includes a hydraulic cylinder 41 fixedly connected to the main body 11, a movable plate 42 is slidably connected in the hydraulic cylinder 41, and an extension rod 43 is fixedly connected to the movable plate 42. The extension rod 43 extends downward from the hydraulic cylinder 41, and the bottom end of the extension rod 43 is fixedly connected to the fixed plate 14.

[0086] Specifically, when in use, when the wires need to be removed from the relay, hydraulic oil is input into the hydraulic cylinder 41, and the movable plate 42 is pushed downward under the action of the hydraulic oil, and the movable plate 42 drives the extension rod 43 to move downward. Under the action of the extension rod 43, the main body 11 moves away from the fixed plate 14 and stretches the limit spring 15.

[0087] By setting up the disengagement mechanism 4, when it is necessary to remove the wire from the relay, when the bolt 13 is unscrewed from the threaded hole to loosen the wire, the extension rod 43 can be used to move the body 11 away from the fixing plate 14, so that the wire is completely disengaged from the bolt 13, thereby facilitating power off in an emergency.

[0088] like Figure 4 、 5 As shown, the disengagement mechanism 4 also includes a moving rod 44 that is gap-mounted on the two extension rods 312 on the same side, and the bottom surface of the moving rod 44 abuts against the top of the rod sleeve 311. The shell 21 is fixedly connected to an oil cylinder 45, and a push plate 46 is slidably connected in the oil cylinder 45. A push rod 47 is fixedly connected to the lower side of the push plate 46, and the push rod 47 extends downward and is fixedly connected to the moving rod 44. A connecting pipe 48 is provided on the oil cylinder 45, and the connecting pipe 48 is connected to the hydraulic cylinder 41. The connection point between the connecting pipe 48 and the hydraulic cylinder 41 is located on the upper side of the moving plate 42, and the connection point between the connecting pipe 48 and the oil cylinder 45 is located on the upper side of the push plate 46.

[0089] Specifically, during use, when the rod sleeve 311 moves upward, the rod sleeve 311 drives the moving rod 44 to move upward, the moving rod 44 drives the push rod 47 to move upward, and the push rod 47 drives the push plate 46 to move upward, pressing the hydraulic oil in the oil cylinder 45 into the hydraulic cylinder 41 through the connecting pipe 48, thereby causing the extension rod 43 to extend from the hydraulic cylinder 41.

[0090] By setting the movable rod 44, when the rod sleeve 311 moves upward, that is, when the bolt 13 is unscrewed, the hydraulic oil in the oil cylinder 45 is transported to the hydraulic cylinder 41 through the push plate 46, so that the extension rod 43 extends from the hydraulic cylinder 41, thereby moving the main body 11, so that the wire is completely separated from the bolt 13. After power is cut off, the heat dissipation structure quickly cools the relay, so that it can be put into use again in a short time, thereby improving the risk resistance of the relay.

[0091] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0092] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A solid-state relay for lithium battery BMS, characterized in that: The invention comprises a relay mechanism (1), wherein the relay mechanism (1) comprises a body (11), a heat dissipation mechanism (2) is provided on the body (11), the heat dissipation mechanism (2) comprises a shell (21) provided on the body (11), a motor (22) is fixedly connected to the top of the shell (21), an output end of the motor (22) extends downward into the shell (11), a rotating shaft (23) is fixedly connected to the output end of the motor (22), a shaft sleeve (24) is fixedly provided on the rotating shaft (23), a fan blade (25) is fixedly connected to the shaft sleeve (24), an air outlet (26) is provided at the top of the shell (21), and an air inlet (27) is provided at the bottom end of the side of the shell (21).

2. A solid-state relay for lithium-ion BMS according to claim 1, characterized in that: A group of air inlet channels are provided at the bottom ends of the four vertical side surfaces of the shell (21), and the air inlet channels include at least nine air inlets (27) arranged at equal intervals in the horizontal direction.

3. A solid-state relay for lithium-ion BMS according to claim 1, characterized in that: The relay mechanism (1) further comprises four mounting slots (12) arranged in a matrix on the body (11), each mounting slot (12) being provided with a mounting hole, and each mounting hole being provided with a bolt (13).

4. A solid-state relay for lithium-ion BMS according to claim 3, characterized in that: The bolt (13) is connected to a disassembly mechanism (3), the disassembly mechanism (3) includes a disassembly member (31) fixedly connected to the bolt (13), the disassembly member (31) includes a rod sleeve (311) fixedly connected to the bolt (13), an extension rod (312) is slidably connected in the rod sleeve (311), a groove is provided in the rod sleeve (311), a protrusion is fixedly connected to the extension rod (312), and the protrusion is slidably connected in the groove, the top end of the extension rod (312) is fixedly connected to a first pulley (313), the top end of the first pulley (313) is rotatably connected to a mounting plate (314), the top surface of the first pulley (313) is provided with an annular T-shaped sliding groove, the bottom surface of the mounting plate (314) is symmetrically fixedly connected to two T-shaped sliding blocks, the T-shaped sliding blocks are slidably connected in the T-shaped sliding groove, and the mounting plate (314) is fixedly connected to the housing (21).

5. A solid-state relay for lithium battery BMS according to claim 4, characterized in that: The disassembly mechanism (3) further includes a transmission member (32), the transmission member (32) including four driven shafts (321) arranged in the housing (21), the four driven shafts (321) being arranged in a matrix in the housing (21), the driven shafts (321) being rotatably connected to the top wall of the housing (21), a second pulley (322) being fixedly sleeved on the driven shaft (321), a transmission belt (323) being connected between the second pulley (322) and the first pulley (313), a through hole (324) being opened on the housing (21), the transmission belt (323) passing through the through hole (324), and a power member (33) being arranged between the driven shaft (321) and the rotating shaft (23).

6. A solid-state relay for lithium battery BMS according to claim 5, characterized in that: The power member (33) includes a driving gear (331) slidably sleeved on the rotating shaft (23); a spline is fixedly provided on the rotating shaft (23); a spline groove is provided on the inner ring surface of the driving gear (331); the spline is slidably connected in the spline groove; the top wall of the housing (21) is symmetrically rotatably connected to two driving shafts (332); the driving shaft (332) is located between the two driven shafts (321); a transmission gear (333) is fixedly sleeved on the driving shaft (332); the transmission gear (333) is meshed with the driving gear (331); a driven gear (334) is fixedly sleeved on the driven shaft (321); a linkage gear (335) is fixedly sleeved on the driving shaft (332); the driven gear (334) is meshed with the linkage gear (335).

7. A solid-state relay for a lithium battery BMS according to claim 6, characterized in that: Two electric push rods (34) are symmetrically fixedly connected to the top surface of the body (11); a rolling ball is rotatably connected to the top of the electric push rod (34); the rolling ball contacts the bottom surface of the driving gear (331); a spring (35) is sleeved on the rotating shaft (23); and the spring (35) is located between the driving gear (331) and the shaft sleeve (24).

8. A solid-state relay for lithium-ion BMS according to claim 7, characterized in that: The relay mechanism (1) further comprises a fixed plate (14) arranged on the lower side of the body (11); two limit springs (15) are symmetrically connected between the fixed plate (14) and the bottom surface of the body (11); two abutment tubes (16) are symmetrically fixedly connected to the fixed plate (14); the two limit springs (15) are respectively arranged in the two abutment tubes (16).

9. A solid-state relay for lithium-ion BMS according to claim 8, characterized in that: Two disengagement mechanisms (4) are symmetrically arranged on the body (11), and the disengagement mechanism (4) comprises a hydraulic cylinder (41) fixedly connected to the body (11), a movable plate (42) is slidably connected in the hydraulic cylinder (41), an extension rod (43) is fixedly connected to the movable plate (42), the extension rod (43) extends downward out of the hydraulic cylinder (41), and the bottom end of the extension rod (43) is fixedly connected to the fixed plate (14).

10. A solid-state relay for a lithium battery BMS according to claim 9, characterized in that: The disengagement mechanism (4) further comprises a moving rod (44) which is sleeved on the two extension rods (312) on the same side with a gap, the bottom surface of the moving rod (44) abuts against the top end of the rod sleeve (311), an oil cylinder (45) is fixedly connected to the housing (21), a push plate (46) is slidably connected in the oil cylinder (45), a push rod (47) is fixedly connected to the lower side of the push plate (46), the push rod (47) extends downward and is fixedly connected to the moving rod (44), a connecting pipe (48) is provided on the oil cylinder (45), the connecting pipe (48) is connected to the hydraulic cylinder (41), the connecting point of the connecting pipe (48) and the hydraulic cylinder (41) is located on the upper side of the moving plate (42), and the connecting point of the connecting pipe (48) and the oil cylinder (45) is located on the upper side of the push plate (46).

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