Heat dissipation structure of thermal resistor of nickel-metal hydride battery pack for hybrid electric vehicle

Abstract

The invention provides a heat dissipation structure of a heat resistor of a nickel-metal hydride battery pack for a hybrid electric vehicle, belongs to the technical field of battery heat dissipation structures, and aims to solve the problem that the heat dissipation efficiency of the bottom of the nickel-metal hydride battery pack is influenced as heat at the bottom of the nickel-metal hydride battery pack is difficult to take out from a shell by the conventional heat dissipation structure. Two air blowing mechanisms are arranged on the rear side of the shell, a sealing plate is arranged on the top of the shell, and a heat dissipation piece is arranged on the rear side of the upper end face of the sealing plate. The heat dissipation piece is of a rectangular box structure, and a transfer box, a pressing mechanism, a buzzer, a warning board and a controller are arranged in front of the heat dissipation piece and located on the upper end face of the sealing plate. By starting the small cooling fan, external air enters the air blowing mechanism and then is uniformly blown away to the heat absorption sheets on the opposite surfaces of the two heat conduction support plates, so that heat on the two heat conduction support plates and the heat absorption sheets is blown out from the interior of the shell, and the cooling efficiency of the top and the bottom of the nickel-metal hydride battery pack is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery heat dissipation structures, and more specifically, particularly relates to a heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle. Background Art

[0002] A hybrid vehicle refers to a vehicle whose drive system is composed of two or more individual drive systems that can operate simultaneously, and the driving power of the vehicle is provided separately or jointly by individual drive systems according to the actual driving state of the vehicle. Currently, some hybrid vehicles generally use nickel-metal hydride batteries to provide electrical energy. Nickel-metal hydride batteries are a type of storage battery with good performance. Nickel-metal hydride batteries are divided into high-voltage nickel-metal hydride batteries and low-voltage nickel-metal hydride batteries.

[0003] For example, application number: CN201410300226.3. The present invention discloses a heat dissipation structure for a nickel-metal hydride battery pack box of a pure electric bus, belonging to the technical field of electric vehicle power sources. It includes a battery pack box, a battery pack, a connecting hose, and a cooling fan. The battery pack is composed of single cells, separators, connecting end plates, and tie bars; the upper part of the battery box is an open structure. When forced cooling, air passes through the gap between the separators of the battery cells, the space at the bottom of the battery box, the inner cavity channel of the rectangular tube of the bottom plate frame, the exhaust port joint, the connecting hose, and the cooling fan to form an air flow channel, and the heat inside the battery pack is discharged outside the vehicle through the circulation of air; in addition, the battery pack is in an open environment, and the heat of the battery exchanges heat with the air through thermal radiation and convection. It ensures that the battery operating temperature is within the technical requirements. The structure of the present invention is simple and easy to assemble, and since it is connected by a connecting hose, the cooling fan can be placed arbitrarily according to the installation environment of the battery box, and the exhaust outlet can be freely designed.

[0004] Currently, when dissipating heat from a nickel-metal hydride battery pack, a heat dissipation structure is usually provided on the battery pack inside the housing. However, the existing heat dissipation structures for nickel-metal hydride battery packs still have the following deficiencies in actual use. For example, whether it is an air-cooled structure or a water-cooled structure, since it is arranged outside the nickel-metal hydride battery pack, and the bottom of the nickel-metal hydride battery pack only conducts heat through a thermal conductive film, it is very difficult to quickly take out the heat at the bottom of the nickel-metal hydride battery pack from the housing, thereby affecting the heat dissipation efficiency at the bottom of the nickel-metal hydride battery pack. Moreover, in the existing water-cooled heat dissipation structure, when the coolant inside it is too little, it cannot bring an effective warning effect to people, so when the coolant in the water-cooled heat dissipation structure is too little, it cannot be replenished in time, thereby greatly reducing the reliability of the heat dissipation structure. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle, so as to solve the problem that in the existing heat dissipation structure, whether it is an air-cooled structure or a water-cooled structure, since it is arranged outside the nickel-metal hydride battery pack, and the bottom of the nickel-metal hydride battery pack only conducts heat through a heat-conducting film, it is very difficult to quickly take out the heat at the bottom of the nickel-metal hydride battery pack from the shell, thus affecting the heat dissipation efficiency at the bottom of the nickel-metal hydride battery pack. Moreover, in the existing water-cooled heat dissipation structure, when the coolant inside it is too little, it cannot bring an effective warning effect to people, so when the coolant inside the water-cooled heat dissipation structure is too little, it cannot be replenished in time, thereby greatly reducing the reliability of the heat dissipation structure.

[0006] The purpose and efficacy of a heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle according to the present invention are achieved by the following specific technical means:

[0007] A heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle includes a housing. Two blowing mechanisms are provided at the rear side of the housing, a sealing plate is provided at the top of the housing, and a heat dissipation member is provided at the rear side of the upper end surface of the sealing plate; the heat dissipation member is of a rectangular box structure. In front of the heat dissipation member, a transfer box body, a pressing mechanism, a buzzer, a warning sign, and a controller are provided on the upper end surface of the sealing plate, and the buzzer is commonly electrically connected to the pressing mechanism through the controller; a circulation mechanism is installed on the front end surface of the housing, and six nickel-metal hydride battery packs are provided in the middle side of the housing. Two heat absorption pipe fittings are provided outside the six nickel-metal hydride battery packs inside the housing, and the front ends of the two heat absorption pipe fittings penetrate through the front side wall of the housing and are connected to a three-way pipe head. The controller is commonly electrically connected to the six nickel-metal hydride battery packs; a floating plate member is provided inside the transfer box body, and a transmission component is provided on the front end surface of the transfer box body.

[0008] Further, the blowing mechanism includes an air inlet pipe and a small heat dissipation fan. Three air inlet pipes communicating with its interior are evenly provided on the rear end surface of the blowing mechanism, and a small heat dissipation fan is installed inside each air inlet pipe; the blowing mechanism is of a rectangular housing structure, and blowing holes are evenly provided on the front end surface of the blowing mechanism;

[0009] Further, the housing includes an air inlet pipe member, a rectangular air outlet, a heat conduction support plate, and a heat absorption fin. Two air inlet pipe members communicating with its interior are symmetrically provided on the upper and lower sides of the rear end surface of the housing, and a blowing mechanism is connected to the rear end of each of the two air inlet pipe members. A rectangular air outlet is provided on each of the upper and lower sides of the front end surface of the housing; the number of the heat conduction support plates is two, and the cross sections of the two heat conduction support plates are both in an "E" shape, and the two heat conduction support plates are respectively fixed at the upper and lower ends inside the housing. Six groups of nickel-metal hydride battery packs are installed on the opposite surfaces of the two heat conduction support plates, and eighteen heat absorption fins are evenly provided on the opposite surfaces of the two heat conduction support plates. Each heat absorption fin is of a "rich" character structure;

[0010] Further, the transfer box body includes a liquid filling pipe fitting and a connecting rope. The left end face of the transfer box body is connected with a liquid filling pipe fitting, and the liquid filling pipe fitting is of a transparent tubular structure; the liquid filling port of the liquid filling pipe fitting is distributed in a ninety-degree upward bending shape, and the liquid filling port of the liquid filling pipe fitting is of a funnel-shaped structure. A sealing cover is connected to the liquid filling port of the liquid filling pipe fitting by a thread, and a connecting rope is rotatably connected to the top end face of the sealing cover. The other end of the connecting rope is sleeved outside the liquid filling pipe fitting and below the funnel-shaped liquid filling port. The height of the liquid filling port on the liquid filling pipe fitting is two to three centimeters higher than the upper end face of the transfer box body.

[0011] Further, the heat dissipation member includes heat dissipation fins and partition plates. Heat dissipation fins are uniformly arranged on the upper end face of the heat dissipation member; fifteen partition plates are uniformly arranged inside the heat dissipation member, and the length of each partition plate accounts for nine-tenths of the width of the bottom end face inside the heat dissipation member. And a serpentine water channel is formed inside the heat dissipation member through the fifteen partition plates.

[0012] Further, the circulation mechanism includes a circulation water pump, a shunt member and a diversion block. The circulation water pump is fixedly installed on the front end face of the housing, and the liquid inlet of the circulation water pump is connected to the front side of the transfer box body through a water pipe. The liquid outlet of the circulation water pump is connected to a shunt member through a water pipe, and the shunt member is connected to the front ends of two heat absorption pipe fittings. The circulation water pump and the small cooling fan are both commonly electrically connected to the nickel-metal hydride battery pack through the vehicle controller on the power vehicle; the shunt member is of a C-shaped housing structure, and a diversion block is provided in the middle of the rear side face inside the shunt member, and the diversion block is of an isosceles triangular columnar structure.

[0013] Further, the pressing mechanism includes a sliding plate, a first sliding cylinder, a pressing rack, a pressing plate and a push-button switch. A first sliding cylinder is provided on each of the front and rear sides of the sliding plate, and a vertical sliding rod fixed to the upper part of the sealing plate on the housing is slidably connected inside each first sliding cylinder. The push-button switch is arranged on the upper part of the sealing plate on the housing; the pressing rack and the pressing plate are respectively arranged on the left and right end faces of the sliding plate, and the pressing plate is of an L-shaped plate structure and is located above the push-button switch. A transmission component is arranged on the left side of the pressing rack.

[0014] Further, the transmission component includes a rotating shaft support, a first gear and a second gear. The number of the rotating shaft supports is two, and both rotating shaft supports are fixed on the front end face of the transfer box body. A rotating shaft is rotatably connected inside each of the two rotating shaft supports. The left rotating shaft penetrates through the front side wall of the transfer box body, and a waterproof shaft seal fixed inside the front end face of the transfer box body is arranged outside the left rotating shaft. A first gear is arranged at both the front and rear ends of the left rotating shaft, and a second gear meshing with the first gear is arranged at the front end of the right rotating shaft; when the transmission component is in an installed state with the pressing mechanism and the floating plate member, the second gear meshes with the pressing rack, and the rear first gear meshes with the driving rack.

[0015] Furthermore, the floating plate member includes a second sliding cylinder, a counterweight, and a driving rack. The floating plate member is of a rectangular plate structure, and rectangular through-holes are formed at both the left and right ends of the upper end surface of the floating plate member. Second sliding cylinders are provided at the four corners of the upper end surface of the floating plate member, and a limiting sliding rod fixed inside the transfer box body is slidably connected inside each second sliding cylinder, and all four limiting sliding rods penetrate through the floating plate member; a counterweight is provided in the middle of the upper end surface of the floating plate member, and a rectangular notch is formed in the front side of the middle of the upper end surface of the floating plate member, and a driving rack is fixed to the left side surface inside the rectangular notch of the floating plate member.

[0016] Furthermore, cooling liquid is filled in the heat dissipation member, the transfer box body, and the heat absorption pipe member. When the liquid level height of the cooling liquid inside the transfer box body accounts for one-half of the internal height of the transfer box body, the floating plate member is located in the middle side part inside the transfer box body, and the bottom end surface of the pressing plate is in close contact with the button on the push-button switch.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the setting of the blowing mechanism and the heat conduction support plate in the present invention, by starting the small cooling fan, external air enters the inside of the blowing mechanism, and then is evenly blown to the heat absorption fins on the opposite sides of the two heat conduction support plates through the blowing holes on the front side of the blowing mechanism, so that the heat on the two heat conduction support plates and the heat absorption fins is blown out from the inside of the housing, so that the heat at the top and bottom of the six nickel-metal hydride battery packs can be quickly dissipated, thus greatly improving the heat dissipation efficiency at the top and bottom of the nickel-metal hydride battery packs.

[0019] 2. Through the cooperation of the floating plate member, the transmission component and the pressing mechanism in the present invention, when the liquid amount of the cooling liquid inside the transfer box body is too small, the floating plate member slides down, and then drives the sliding plate to slide down through the transmission component, and then presses the button on the push-button switch downward through the bottom end surface of the pressing plate, so that the controller starts the buzzer. Under the warning of the buzzer and the warning sign nearby, people can quickly notice the phenomenon that the cooling liquid inside the transfer box body is too little, so as to make up for it in time, thus greatly improving the reliability of the present heat dissipation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first perspective structural schematic diagram of the present invention.

[0021] Figure 2 is the second perspective structural schematic diagram of the present invention.

[0022] Figure 3 is the structural schematic diagram of the present invention in a disassembled state.

[0023] Figure 4 is the structural schematic diagram of the heat conduction support plate and the heat absorption pipe member of the present invention.

[0024] Figure 5 It is a schematic structural diagram after the housing and the blowing mechanism of the present invention are disassembled.

[0025] Figure 6 It is a schematic partial sectional view of the heat dissipation component of the present invention.

[0026] Figure 7 It is a schematic partial sectional view of the transfer box body of the present invention.

[0027] Figure 8 It is of the present invention Figure 1 Schematic diagram of the partial enlarged structure at position A.

[0028] Figure 9 It is a schematic partial sectional view of the flow dividing component of the present invention.

[0029] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0030] 1. Housing; 101. Air inlet pipe component; 102. Rectangular air outlet; 103. Heat conduction support plate; 104. Heat absorption fin; 2. Blowing mechanism; 201. Air inlet pipe; 202. Small heat dissipation fan; 3. Heat dissipation component; 301. Heat dissipation fin; 302. Partition board; 4. Transfer box body; 401. Liquid adding pipe fitting; 402. Connecting rope; 5. Pressing mechanism; 501. Sliding plate; 502. First sliding cylinder; 503. Pressing rack; 504. Pressing plate; 505. Pressing type switch; 6. Circulation mechanism; 601. Circulation water pump; 602. Flow dividing component; 603. Flow guiding block; 7. Heat absorption pipe fitting; 8. Buzzer; 9. Warning sign; 10. Controller; 11. Nickel-metal hydride battery pack; 12. Floating plate component; 1201. Second sliding cylinder; 1202. Counterweight block; 1203. Driving rack; 13. Transmission component; 1301. Rotating shaft support; 1302. First gear; 1303. Second gear; 14. Three-way pipe head. Specific embodiments

[0031] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0032] As shown in the attached Figure 1 to the attached Figure 9 shown:

[0033] The present invention provides a heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle, including: a housing 1, and two blowing mechanisms 2 are provided at the rear side of the housing 1; the blowing mechanism 2 includes an air inlet pipe 201 and a small cooling fan 202. Three air inlet pipes 201 communicating with its interior are evenly arranged on the rear end face of the blowing mechanism 2, and a small cooling fan 202 is installed inside each air inlet pipe 201; the blowing mechanism 2 is a rectangular housing structure, and blowing holes are evenly arranged on the front end face of the blowing mechanism 2, so that the blowing mechanism 2 has better uniformity when blowing; a sealing plate is provided on the top of the housing 1, and a heat dissipation member 3 is provided at the rear side of the upper end face of the sealing plate; the heat dissipation member 3 is a rectangular box structure; the heat dissipation member 3 includes heat dissipation fins 301 and partition plates 302. Heat dissipation fins 301 are evenly arranged on the upper end face of the heat dissipation member 3; fifteen partition plates 302 are evenly arranged inside the heat dissipation member 3, and the length of each partition plate 302 accounts for nine-tenths of the width of the bottom end face inside the heat dissipation member 3. A serpentine water channel is formed inside the heat dissipation member 3 through fifteen partition plates 302, thereby increasing the flow stroke of the coolant inside the heat dissipation member 3 and improving the cooling effect of the coolant inside the heat dissipation member 3; in front of the heat dissipation member 3, a transfer box 4, a pressing mechanism 5, a buzzer 8, a warning sign 9 and a controller 10 are provided on the upper end face of the sealing plate; the transfer box 4 includes a liquid filling pipe fitting 401 and a connecting rope 402. A liquid filling pipe fitting 401 is connected to the left end face of the transfer box 4, and the liquid filling pipe fitting 401 is a transparent tubular structure, so that the liquid volume of the coolant inside the transfer box 4 can be observed more intuitively; the liquid filling ports of the liquid filling pipe fitting 401 are bent upward at 90 degrees, and the liquid filling ports of the liquid filling pipe fitting 401 are funnel-shaped structures. A sealing cover is connected to the liquid filling port of the liquid filling pipe fitting 401 by a thread, and a connecting rope 402 is rotatably connected to the top end face of the sealing cover. The other end of the connecting rope 402 is sleeved outside the liquid filling pipe fitting 401 below the funnel-shaped liquid filling port to prevent the sealing cover from being loosened and lost. The height of the liquid filling port on the liquid filling pipe fitting 401 is 2 to 3 centimeters higher than the upper end face of the transfer box 4; the pressing mechanism 5 includes a sliding plate 501, a first sliding cylinder 502, a pressing rack 503, a pressing plate 504 and a pressing switch 505. A first sliding cylinder 502 is provided on each of the front and rear sides of the sliding plate 501, and a vertical sliding rod fixed to the upper part of the sealing plate on the housing 1 is slidably connected inside each first sliding cylinder 502. The pressing switch 505 is arranged on the upper part of the sealing plate on the housing 1; the pressing rack 503 and the pressing plate 504 are respectively arranged on the left and right end faces of the sliding plate 501, and the pressing plate 504 is an L-shaped plate structure, and the pressing plate 504 is located above the pressing switch 505. A transmission component 13 is provided on the left side of the pressing rack 503; the buzzer 8 is commonly electrically connected to the pressing mechanism 5 through the controller 10; a circulation mechanism 6 is installed on the front end face of the housing 1;The circulation mechanism 6 includes a circulation water pump 601, a flow dividing member 602 and a flow guiding block 603. The circulation water pump 601 is fixedly installed on the front end face of the housing 1, and the liquid inlet of the circulation water pump 601 is connected to the front side of the transfer box body 4 through a water pipe. The liquid outlet of the circulation water pump 601 is connected with a flow dividing member 602 through a water pipe, and the flow dividing member 602 is connected to the front ends of two heat absorption pipe fittings 7. The circulation water pump 601 and the small cooling fan 202 are both commonly electrically connected to the nickel-metal hydride battery pack 11 through the vehicle controller on the power vehicle; the flow dividing member 602 is of a U-shaped housing structure, and a flow guiding block 603 is arranged in the middle of the rear side surface inside the flow dividing member 602, and the flow guiding block 603 is of an isosceles triangle columnar structure, so that the cold area liquid entering the flow dividing member 602 can be evenly distributed; six nickel-metal hydride battery packs 11 are arranged in the middle side of the housing 1. A total of two heat absorption pipe fittings 7 are arranged outside the six nickel-metal hydride battery packs 11 inside the housing 1, and the front ends of the two heat absorption pipe fittings 7 penetrate through the front side wall of the housing 1 and are connected with a three-way pipe head 14. The controller 10 is commonly electrically connected to the six nickel-metal hydride battery packs 11; a floating plate member 12 is arranged inside the transfer box body 4; the floating plate member 12 includes a second sliding cylinder 1201, a counterweight 1202 and a driving rack 1203. The floating plate member 12 is of a rectangular plate structure, and a rectangular through hole is opened at each of the left and right ends of the upper end surface of the floating plate member 12. A second sliding cylinder 1201 is arranged at each of the four corners of the upper end surface of the floating plate member 12, and a limiting slide rod fixed inside the transfer box body 4 is slidably connected inside each second sliding cylinder 1201, and the four limiting slide rods all penetrate through the floating plate member 12; a counterweight 1202 is arranged in the middle of the upper end surface of the floating plate member 12, and a rectangular notch is opened in the front side of the middle of the upper end surface of the floating plate member 12. A driving rack 1203 is fixed on the left side surface of the rectangular notch on the floating plate member 12; a transmission assembly 13 is arranged on the front end surface of the transfer box body 4; a coolant is filled in the heat dissipation member 3, the transfer box body 4 and the heat absorption pipe fitting 7. When the liquid level height of the coolant inside the transfer box body 4 accounts for half of the internal height of the transfer box body 4, the floating plate member 12 is located in the middle side part of the transfer box body 4, and the bottom end surface of the pressing plate 504 is in close contact with the button on the push-button switch 505, so that the button on the push-button switch 505 is pressed.

[0034] Among them, the housing 1 includes an air inlet pipe member 101, a rectangular air outlet 102, a heat-conducting support plate 103, and a heat-absorbing fin 104. The rear end face of the housing 1 is symmetrically provided with two air inlet pipe members 101 communicating with its interior up and down, and a blowing mechanism 2 is connected to the rear ends of both air inlet pipe members 101. Rectangular air outlets 102 are provided on both the upper and lower sides of the front end face of the housing 1; the number of heat-conducting support plates 103 is two, and the cross-sections of both heat-conducting support plates 103 are in the shape of "E", and the two heat-conducting support plates 103 are respectively fixed at the upper and lower ends inside the housing 1. Six groups of nickel-metal hydride battery packs 11 are installed on the opposite faces of the two heat-conducting support plates 103, and eighteen heat-absorbing fins 104 are evenly arranged on the opposite faces of the two heat-conducting support plates 103. Each heat-absorbing fin 104 is in the shape of "abundant", so that the heat-absorbing fin 104 has a better heat-absorbing effect.

[0035] Among them, the transmission assembly 13 includes a rotating shaft support 1301, a first gear 1302, and a second gear 1303. The number of rotating shaft supports 1301 is two, and both rotating shaft supports 1301 are fixed on the front end face of the middle transfer box 4. A rotating shaft is rotatably connected inside both rotating shaft supports 1301. The left rotating shaft penetrates the front side wall of the middle transfer box 4. A waterproof shaft seal fixed inside the front end face of the middle transfer box 4 is provided outside the left rotating shaft, and a first gear 1302 is provided at both the front and rear ends of the left rotating shaft. A second gear 1303 meshing with the first gear 1302 is provided at the front end of the right rotating shaft; when the transmission assembly 13 is in an installed state with the pressing mechanism 5 and the floating plate member 12, the second gear 1303 meshes with the pressing rack 503, and the rear first gear 1302 meshes with the driving rack 1203. Through the transmission assembly 13, the floating plate member 12 can drive the sliding plate 501 to press down when sliding down.

[0036] In another embodiment, a blowing cover is provided at the rear side of the top of the heat dissipation member 3, and the blowing cover is in the shape of a rectangular lofting, and a hair dryer is installed inside the blowing cover. Thus, after the hair dryer is started, the heat dissipation fins 301 at the top of the heat dissipation member 3 can have a more efficient heat dissipation efficiency.

[0037] During use: When heat is generated during the operation of the six nickel-metal hydride battery packs 11, the heat generated around the outside of the six nickel-metal hydride battery packs 11 is transferred to the internal coolant through the two heat absorption pipe fittings 7. Then, the coolant inside the heat dissipation member 3 and the transfer box body 4 is shunted by the shunt member 602 and transported into the two heat absorption pipe fittings 7 by the circulating water pump 601. Thus, the coolant with heat inside the two heat absorption pipe fittings 7 converges through the three-way pipe head 14 and flows into the heat dissipation member 3. Then, heat dissipation is carried out through the outer wall and the top heat dissipation fins 301 of the heat dissipation member 3. The cooled coolant is then transported to the two heat absorption pipe fittings 7 by the circulating water pump 601 to complete the cycle cooling function. At this time, the heat at the top and bottom of the six nickel-metal hydride battery packs 11 will be transferred to the upper and lower heat conduction support plates 103 respectively. Then, by starting the small cooling fan 202, external air enters the blowing mechanism 2, and then is evenly blown through the blowing holes on the front side of the blowing mechanism 2 onto the heat absorption fins 104 on the back sides of the two heat conduction support plates 103. Thus, the heat on the heat absorption fins 104 on the back sides of the two heat conduction support plates 103 is blown out from inside the housing 1, so that the two heat conduction support plates 103 are quickly and effectively cooled, so that the heat at the top and bottom of the six nickel-metal hydride battery packs 11 can be quickly dissipated, thus greatly improving the heat dissipation efficiency at the top and bottom of the nickel-metal hydride battery packs 11;

[0038] When the amount of coolant inside the transfer box body 4 is too small, due to the decrease in the coolant liquid level, the floating plate member 12 slides downward under the gravity of the counterweight 1202. Then, the driving rack 1203 drives the rear first gear 1302 to rotate counterclockwise, and then the front first gear 1302 drives the second gear 1303 to rotate clockwise. Thus, the pressing rack 503 drives the sliding plate 501 to move downward, and then the button on the pressing switch 505 is pressed downward by the bottom end surface of the pressing plate 504. Thus, the controller 10 starts the buzzer 8, so that the buzzer 8 starts to emit a warning sound. Thus, people can find the buzzer 8 following the warning sound. Then, under the warning effect of the buzzer 8 and the warning sign 9 nearby, people can quickly notice the phenomenon that the coolant inside the transfer box body 4 is too little, and thus make a timely supplement, which greatly improves the reliability of this heat dissipation structure.

[0039] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A heat dissipation structure of a nickel-metal hydride battery pack for a hybrid electric vehicle, characterized in that: A heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack used in a hybrid vehicle, comprising: a housing, two blowing mechanisms are provided at the rear side of the housing, a sealing plate is provided at the top of the housing, and a heat dissipation member is provided at the rear side of the upper end surface of the sealing plate; The heat dissipation member is of a rectangular box structure. In front of the heat dissipation member, a transfer box body, a pressing mechanism, a buzzer, a warning sign and a controller are provided on the upper end surface of the sealing plate, and the buzzer and the pressing mechanism are in ordinary electrical connection through the controller; A circulation mechanism is installed on the front end surface of the housing, and six nickel-metal hydride battery packs are provided in the middle side of the housing. A total of two heat absorption pipe fittings are provided outside the six nickel-metal hydride battery packs in the housing, and the front ends of the two heat absorption pipe fittings penetrate through the front side wall of the housing and are connected to a three-way pipe head. The controller is in ordinary electrical connection with the six nickel-metal hydride battery packs; A floating plate member is provided inside the transfer box body, and a transmission component is provided on the front end surface of the transfer box body.

2. A heat dissipation structure of a nickel-metal hydride battery pack for a hybrid vehicle as claimed in claim 1, characterized in that: The housing includes an air inlet pipe fitting, a rectangular air outlet, a heat conduction support plate and heat absorption fins. Two air inlet pipe fittings communicating with the inside are symmetrically provided at the upper and lower positions on the rear end surface of the housing, and a blowing mechanism is connected to the rear end of each of the two air inlet pipe fittings. Rectangular air outlets are opened on both the upper and lower sides of the front end surface of the housing; The number of the heat conduction support plates is two, and the cross sections of the two heat conduction support plates are both in an "E" shape. The two heat conduction support plates are respectively fixed at the upper and lower ends inside the housing. Six groups of nickel-metal hydride battery packs are installed on the opposite surfaces of the two heat conduction support plates. Eighteen heat absorption fins are evenly provided on the opposite surfaces of the two heat conduction support plates, and each heat absorption fin is of a "Feng" shape structure.

3. A heat dissipation structure of a nickel-metal hydride battery pack for a hybrid vehicle as claimed in claim 2, characterized in that: The blowing mechanism includes an air inlet pipe and a small cooling fan. Three air inlet pipes communicating with the inside are evenly provided on the rear end surface of the blowing mechanism, and a small cooling fan is installed inside each air inlet pipe; The blowing mechanism is of a rectangular housing structure, and blowing holes are evenly provided on the front end surface of the blowing mechanism.

4. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The heat dissipation member includes heat dissipation fins and partitions. Heat dissipation fins are evenly provided on the upper end surface of the heat dissipation member; Fifteen partitions are evenly provided inside the heat dissipation member, and the length of each partition accounts for nine-tenths of the width of the bottom end surface inside the heat dissipation member. A serpentine water channel is formed inside the heat dissipation member through the fifteen partitions.

5. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The transfer box body includes a liquid adding pipe fitting and a connecting rope. A liquid adding pipe fitting is connected to the left end surface of the transfer box body, and the liquid adding pipe fitting is of a transparent tubular structure; The liquid adding ports of the liquid adding pipe fitting are bent upward at 90 degrees, and the liquid adding ports of the liquid adding pipe fitting are of a funnel-shaped structure. A sealing cover is connected to the liquid adding port of the liquid adding pipe fitting through a thread, and a connecting rope is rotatably connected to the top end surface of the sealing cover. The other end of the connecting rope is sleeved outside the liquid adding pipe fitting and below the funnel-shaped liquid adding port. The height of the liquid adding port on the liquid adding pipe fitting is 2 to 3 centimeters higher than the upper end surface of the transfer box body.

6. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The pressing mechanism includes a sliding plate, a first sliding cylinder, a pressing rack, a pressing plate and a pressing switch. A first sliding cylinder is provided on each of the front and rear sides of the sliding plate, and a vertical sliding rod fixed to the upper part of the sealing plate on the housing is slidably connected inside each first sliding cylinder. The pressing switch is provided on the upper part of the sealing plate on the housing; The left and right end surfaces of the sliding plate are respectively provided with a pressing rack and a pressing plate, and the pressing plate is an L-shaped plate structure, and the pressing plate is located above the push switch, and a transmission component is provided on the left side of the pressing rack.

7. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The circulation mechanism includes a circulating water pump, a flow divider and a flow guide block. The circulating water pump is fixedly installed on the front end face of the housing, and the liquid inlet of the circulating water pump is connected to the front side of the transfer box through a water pipe. The liquid outlet of the circulating water pump is connected to the flow divider through a water pipe, and the flow divider is connected to the front ends of the two heat absorbing pipes. The circulating water pump and the small cooling fan are both electrically connected to the nickel-hydrogen battery pack through the vehicle controller on the power vehicle. The diverter is a U-shaped shell structure, and a guide block is provided at the middle end of the rear side surface inside the diverter, and the guide block is an isosceles triangle columnar structure.

8. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The floating plate comprises a second slide cylinder, a counterweight block and a driving rack. The floating plate is a rectangular plate-shaped structure, and a rectangular opening is provided at both ends of the upper end surface of the floating plate. A second slide cylinder is provided at each of the four included angles of the upper end surface of the floating plate. A limiting slide rod fixed to the inside of the transfer box is slidably connected inside each second slide cylinder, and the four limiting slide rods all penetrate the floating plate. A counterweight is arranged in the middle of the upper end surface of the floating plate, and a rectangular notch is opened at the front side of the middle of the upper end surface of the floating plate, and a driving rack is fixed on the left side of the rectangular notch of the floating plate.

9. A heat dissipation structure of a nickel-metal hydride battery pack for a hybrid vehicle as claimed in claim 6, characterized in that: The transmission assembly includes a rotating shaft support, a first gear and a second gear. There are two rotating shaft supports, and both rotating shaft supports are fixed to the front end surface of the transfer box. A rotating shaft is rotatably connected inside the two rotating shaft supports, and the left rotating shaft passes through the front side wall of the transfer box. A waterproof shaft seal fixed inside the front end surface of the transfer box is provided on the outside of the left rotating shaft, and a first gear is provided at both the front and rear ends of the left rotating shaft, and a second gear meshing with the first gear is provided at the front end of the right rotating shaft; When the transmission assembly is in an installed state with the pressing mechanism and the floating plate, the second gear is meshed with the pressing rack, and the first gear at the rear side is meshed with the driving rack.

10. The heat dissipation structure of the nickel-metal hydride battery pack for hybrid electric vehicles as claimed in claim 1, characterized in that: The heat sink, transfer box and heat absorbing pipe are all filled with coolant, and when the coolant level inside the transfer box accounts for half of the internal height of the transfer box, the floating plate is located in the middle side of the transfer box, and the bottom end surface of the pressing plate is in close contact with the button on the push switch.

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