A heat dissipation structure of a nickel-hydrogen battery pack for a hybrid vehicle

Abstract

The application provides a heat dissipation structure of a nickel-hydrogen battery pack for a hybrid vehicle, and belongs to the technical field of battery heat dissipation structures. The heat dissipation structure is used to solve the problem that the existing heat dissipation structure is difficult to quickly take out the heat at the bottom of the nickel-hydrogen battery pack from the shell, thereby affecting the heat dissipation efficiency of the bottom of the nickel-hydrogen battery pack. The heat dissipation structure comprises a shell, two blowing mechanisms arranged on the rear side of the shell, a sealing plate arranged on the top of the shell, and a heat dissipation piece arranged on the rear side of the upper end surface of the sealing plate. The heat dissipation piece is a rectangular box structure, and a transfer box, a pressing mechanism, a buzzer, a warning sign and a controller are arranged on the front of the heat dissipation piece and on the upper end surface of the sealing plate. By starting the small heat dissipation fan, external air is introduced into the blowing mechanism and then uniformly blown to the heat absorption pieces on the opposite surfaces of the two heat conduction plates, so that the heat on the two heat conduction plates and the heat absorption pieces is blown out from the shell, thereby greatly improving the heat dissipation efficiency of the top and bottom of the nickel-hydrogen battery pack.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery heat dissipation structure, more particularly, relates to a heat dissipation structure of a nickel-hydrogen battery pack for a hybrid electric vehicle. BACKGROUND

[0002] The hybrid electric vehicle refers to a vehicle whose driving system is composed of two or more single driving systems which can operate simultaneously, and the driving power of the vehicle is provided by the single driving system alone or jointly according to the actual driving state of the vehicle.

[0003] For example, the application number CN201410300226.3 discloses a pure electric bus nickel-hydrogen battery pack heat dissipation structure, and belongs to the technical field of electric vehicle power supply. It comprises a battery pack box, a battery pack, a connecting hose and a cooling fan. The battery pack is composed of single batteries, a partition plate, a connecting end plate and a stay. The upper part of the battery box is an open structure. When forced cooling is needed, air passes through the gap between the partition plates, the space at the bottom of the battery box, the rectangular tube inner cavity channel of the bottom plate frame, the exhaust port connector, the connecting hose and the cooling fan, forming an air flow channel, and the heat in the battery pack is discharged out of the vehicle body through the air circulation. In addition, the battery pack is in an open environment, and the heat of the battery is exchanged with air through heat radiation and convection. The working temperature of the battery is ensured to be within the technical requirements. The structure is simple and easy to assemble. The cooling fan can be placed arbitrarily according to the installation environment of the battery box due to the connection through the connecting hose, and the exhaust outlet can be designed freely.

[0004] At present, when the nickel-hydrogen battery pack is cooled, a heat dissipation structure is usually arranged on the battery pack in the shell. However, the existing heat dissipation structure for the nickel-hydrogen battery pack has the following disadvantages in actual use, such as: the existing heat dissipation structure, whether it is an air cooling structure or a water cooling structure, is arranged outside the nickel-hydrogen battery pack, and the heat at the bottom of the nickel-hydrogen battery pack is difficult to be quickly taken out from the shell only through the heat conduction sheet, thereby affecting the heat dissipation efficiency of the bottom of the nickel-hydrogen battery pack. Moreover, the existing water cooling heat dissipation structure cannot effectively warn people when the amount of cooling liquid inside is insufficient, so that the cooling liquid cannot be supplemented in time when the amount of cooling liquid inside the water cooling heat dissipation structure is insufficient, thereby greatly reducing the reliability of the heat dissipation structure. SUMMARY

[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 structures, whether it is an air-cooled structure or a water-cooled structure, since they are arranged outside the nickel-metal hydride battery pack, and only a heat-conducting film is used for heat conduction at the bottom of the nickel-metal hydride battery pack, 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, and further greatly reduces 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 shell. Two blowing mechanisms are provided at the rear side of the shell, a sealing plate is provided at the top of the shell, 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 shell, and six nickel-metal hydride battery packs are provided in the middle side of the shell. Two heat absorption pipe fittings are provided outside the six nickel-metal hydride battery packs in the shell, and the front ends of the two heat absorption pipe fittings penetrate through the front side wall of the shell 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 cooling fan. Three air inlet pipes communicating with its interior 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 shell structure, and blowing holes are evenly provided on the front end surface of the blowing mechanism;

[0009] Further, the shell 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 at the upper and lower positions on the rear end surface of the shell, and one blowing mechanism is connected to the rear end of each of the two air inlet pipe members. A rectangular air outlet is opened at each of the upper and lower sides of the front end surface of the shell; the number of the heat conduction support plates is two, and the cross sections of the two heat conduction support plates are both in the shape of "E", and the two heat conduction support plates are respectively fixed at the upper and lower ends inside the shell. 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 comprises a liquid adding pipe and a connecting rope, the left end surface of the transfer box body is connected with the liquid adding pipe, and the liquid adding pipe is a transparent tubular structure; the liquid adding port of the liquid adding pipe is distributed in a upward 90-degree bending shape, the liquid adding port of the liquid adding pipe is a funnel-shaped structure, a sealing cover is connected with the liquid adding port of the liquid adding pipe through screw threads, one connecting rope is rotationally connected to the top end surface of the sealing cover, the other end of the connecting rope is sleeved to the outside of the liquid adding pipe below the funnel-shaped liquid adding port, and the height of the liquid adding port on the liquid adding pipe is higher than the upper end surface of the transfer box body by 2-3 cm;

[0011] Further, the heat dissipation piece comprises fins and partitions, the upper end surface of the heat dissipation piece is uniformly provided with fins; the inside of the heat dissipation piece is uniformly provided with fifteen partitions, the length of each partition accounts for 90% of the width of the bottom end surface of the inside of the heat dissipation piece, and the inside of the heat dissipation piece forms a serpentine water channel through the fifteen partitions;

[0012] Further, the circulation mechanism comprises a circulating water pump, a flow dividing piece and a flow guiding block, the circulating water pump is fixedly installed on the front end surface of the shell, the liquid inlet of the circulating water pump is connected with the front side of the transfer box body through a water pipe, the liquid outlet of the circulating water pump is connected with the flow dividing piece through a water pipe, the flow dividing piece is connected with the front ends of the two heat absorbing pipes, the circulating water pump and the small-sized heat dissipation fan are both connected with the nickel-hydrogen battery pack through the vehicle controller of the power automobile; the flow dividing piece is a U-shaped shell structure, the inside of the flow dividing piece is provided with a flow guiding block at the middle of the rear surface, and the flow guiding block is an isosceles triangular columnar structure;

[0013] Further, the pressing mechanism comprises a sliding plate, a first sliding cylinder, a pressing rack, a pressing plate and a pressing switch, the front and rear sides of the sliding plate are both provided with a first sliding cylinder, each first sliding cylinder is slidably connected with a vertical sliding rod fixed to the upper part of the sealing plate on the shell, and the pressing switch is arranged on the upper part of the sealing plate on the shell; the left and right end surfaces of the sliding plate are respectively provided with a pressing rack and a pressing plate, the pressing plate is an L-shaped plate structure, the pressing plate is located above the pressing switch, and the left side of the pressing rack is provided with a transmission assembly;

[0014] Further, the transmission assembly comprises a rotating shaft support, a first gear and a second gear, the number of the rotating shaft supports is two, the two rotating shaft supports are both fixed to the front end surface of the transfer box body, each rotating shaft support is rotationally connected with a rotating shaft inside, the left rotating shaft penetrates through the front side wall of the transfer box body, the left rotating shaft is externally provided with a waterproof shaft seal fixed to the inside of the front end surface of the transfer box body, each rotating shaft support is provided with a first gear at the front and rear ends of the left rotating shaft, and the right rotating shaft is provided with a second gear engaged with the first gear at the front end; when the transmission assembly, the pressing mechanism and the floating plate piece are in the installed state, the second gear is engaged with the pressing rack, and the rear first gear is engaged with the driving rack;

[0015] Further, the floating plate member comprises a second sliding cylinder, a counterweight and a driving rack, the floating plate member is a rectangular plate structure, and a rectangular opening is formed at the left and right ends of the upper end face of the floating plate member, a second sliding cylinder is arranged at each of the four corners of the upper end face of the floating plate member, a limiting sliding rod fixed in the transfer box body is slidably connected in each second sliding cylinder, and the four limiting sliding rods penetrate the floating plate member; the upper end face of the floating plate member is provided with a counterweight in the middle, and a rectangular notch is formed in the front side of the upper end face of the floating plate member, and the driving rack is fixed to the left side of the rectangular notch in the floating plate member.

[0016] Further, the cooling liquid is filled in the heat dissipation member, the transfer box body and the heat absorption pipe member, when the liquid level of the cooling liquid in the transfer box body accounts for one half of the height of the transfer box body, the floating plate member is located in the middle of the transfer box body, and the bottom end face of the pressing plate is in close contact with the button of the pressing switch.

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

[0018] 1. By arranging the blowing mechanism and the heat conduction branch plate, the small heat dissipation fan is started to make the external air enter the blowing mechanism, and then the air is uniformly blown to the heat absorption fins on the opposite sides of the two heat conduction branch plates through the blowing holes in the front side of the blowing mechanism, so that the heat on the two heat conduction branch plates and the heat absorption fins is blown out from the shell, and the heat dissipation efficiency of the top and bottom of the nickel-hydrogen battery pack is greatly improved.

[0019] 2. By cooperating the floating plate member, the transmission assembly and the pressing mechanism, when the amount of the cooling liquid in the transfer box body is too small, the floating plate member slides downward, then the sliding plate is driven to slide downward by the transmission assembly, and then the button of the pressing switch is pressed downward by the bottom end face of the pressing plate, so that the controller starts the buzzer, and under the warning of the buzzer and the warning sign nearby, people can quickly realize that the amount of the cooling liquid in the transfer box body is too small, so that the cooling liquid can be supplemented in time, and the reliability of the heat dissipation structure is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the first perspective view of the structure of the present application.

[0021] Figure 2 is the second perspective view of the structure of the present application.

[0022] Figure 3 is the structure schematic view of the present application in the disassembled state.

[0023] Figure 4 is the structure schematic view of the heat conduction branch plate and the heat absorption pipe member of the present application.

[0024] Figure 5 is the structure schematic diagram of the casing and the blowing mechanism of the present application after being disassembled.

[0025] Figure 6 is the structure schematic diagram of the heat radiating member of the present application.

[0026] Figure 7 is the structure schematic diagram of the transfer box of the present application.

[0027] Figure 8 is the structure schematic diagram of the transfer box of the present application. Figure 1 is the structure schematic diagram of the transfer box of the present application.

[0028] Figure 9 is the structure schematic diagram of the transfer box of the present application.

[0029] In the figure, the corresponding relationship between the component name and the figure number is as follows:

[0030] 1, casing; 101, air inlet pipe; 102, rectangular air outlet; 103, heat conduction branch plate; 104, heat absorbing sheet; 2, blowing mechanism; 201, air inlet pipe; 202, small heat radiating fan; 3, heat radiating member; 301, heat radiating sheet; 302, partition plate; 4, transfer box; 401, liquid adding pipe; 402, connecting rope; 5, pressing mechanism; 501, sliding plate; 502, first sliding cylinder; 503, pressing rack; 504, pressing plate; 505, pressing switch; 6, circulating mechanism; 601, circulating water pump; 602, flow dividing member; 603, flow guiding block; 7, heat absorbing pipe; 8, buzzer; 9, warning board; 10, controller; 11, nickel-hydrogen battery pack; 12, floating plate; 1201, second sliding cylinder; 1202, counterweight; 1203, driving rack; 13, transmission assembly; 1301, rotating shaft support; 1302, first gear; 1303, second gear; 14, three-way pipe head. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

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

[0033] ​The application provides a heat dissipation structure of a nickel-hydrogen battery pack for a hybrid vehicle, which comprises a shell 1, two blowing mechanisms 2 arranged on the rear side of the shell 1, each blowing mechanism 2 comprising an air inlet pipe 201 and a small-sized heat dissipation fan 202, the rear end face of each blowing mechanism 2 being uniformly provided with three air inlet pipes 201 in communication with the inside of the blowing mechanism 2, and each air inlet pipe 201 being internally provided with one small-sized heat dissipation fan 202, each blowing mechanism 2 being in the form of a rectangular shell structure and being uniformly provided with blowing holes on the front end face, so that the blowing mechanism 2 has good uniformity when blowing, the top of the shell 1 being provided with a sealing plate, the rear side of the upper end face of the sealing plate being provided with a heat dissipation member 3, the heat dissipation member 3 being in the form of a rectangular box structure, the heat dissipation member 3 comprising heat dissipation fins 301 and partitions 302, the upper end face of the heat dissipation member 3 being uniformly provided with the heat dissipation fins 301, the inside of the heat dissipation member 3 being uniformly provided with fifteen partitions 302, the length of each partition 302 accounting for nine-tenths of the width of the bottom end face of the inside of the heat dissipation member 3, and the inside of the heat dissipation member 3 forming a serpentine water channel through the fifteen partitions 302, so as to increase the flow distance of the cooling liquid in the heat dissipation member 3 and improve the cooling effect of the cooling liquid in the heat dissipation member 3, the front of the heat dissipation member 3 being provided with a transfer box 4, a pressing mechanism 5, a buzzer 8, a warning sign 9 and a controller 10 on the upper end face of the sealing plate, the transfer box 4 comprising a liquid adding pipe 401 and a connecting rope 402, the left end face of the transfer box 4 being connected with the liquid adding pipe 401, the liquid adding pipe 401 being in the form of a transparent tube structure, so that the liquid level of the cooling liquid in the transfer box 4 can be more intuitively observed, the liquid adding port of the liquid adding pipe 401 being in the form of a ninety-degree upward bending distribution and being in the form of a funnel structure, a sealing cover being threadedly connected to the liquid adding port of the liquid adding pipe 401, one connecting rope 402 being rotatably connected to the top end face of the sealing cover, the other end of the connecting rope 402 being sleeved to the outside of the liquid adding pipe 401 below the funnel-shaped liquid adding port, so as to avoid the loss of the sealing cover after being unscrewed, the height of the liquid adding port of the liquid adding pipe 401 being two to three centimeters higher than the upper end face of the transfer box 4, the pressing mechanism 5 comprising a sliding plate 501, a first sliding cylinder 502, a pressing rack 503, a pressing plate 504 and a pressing switch 505, each first sliding cylinder 502 being arranged on the front and rear sides of the sliding plate 501, each first sliding cylinder 502 being internally and slidably connected with one vertical sliding rod fixed to the upper part of the sealing plate on the shell 1, the pressing switch 505 being arranged on the upper part of the sealing plate on the shell 1, the pressing rack 503 and the pressing plate 504 being arranged on the left and right end faces of the sliding plate 501, the pressing plate 504 being in the form of an L-shaped plate structure and being arranged above the pressing switch 505, the left side of the pressing rack 503 being provided with a transmission assembly 13, the buzzer 8 being in common electrical connection with the pressing mechanism 5 through the controller 10, and the shell 1 being provided with a circulating mechanism 6 on the front end face.The circulating mechanism 6 comprises a circulating water pump 601, a flow dividing piece 602 and a flow guiding block 603. The circulating water pump 601 is fixedly installed at the front end face of the shell 1, and the liquid inlet of the circulating water pump 601 is connected with the front side of the transfer box 4 through a water pipe. The liquid outlet of the circulating water pump 601 is connected with the flow dividing piece 602 through a water pipe, and the flow dividing piece 602 is connected with the front ends of the two heat absorbing pipe pieces 7. The circulating water pump 601 and the small-sized heat dissipation fan 202 are both connected with the nickel-hydrogen battery pack 11 through the vehicle controller on the power automobile. The flow dividing piece 602 is a U-shaped shell structure, and the flow guiding block 603 is arranged at the middle end of the rear side face inside the flow dividing piece 602. The flow guiding block 603 is an isosceles triangular column structure, so that the cold region liquid entering the flow dividing piece 602 can be uniformly divided. Six nickel-hydrogen battery packs 11 are arranged at the middle side inside the shell 1. Two heat absorbing pipe pieces 7 are arranged at the outside of the six nickel-hydrogen battery packs 11 inside the shell 1. The front ends of the two heat absorbing pipe pieces 7 penetrate through the front side wall of the shell 1 and are connected with the tee pipe head 14. The controller 10 is connected with the six nickel-hydrogen battery packs 11 through ordinary electricity. The transfer box 4 is internally provided with a floating plate piece 12. The floating plate piece 12 comprises a second sliding cylinder 1201, a counterweight 1202 and a driving rack 1203. The floating plate piece 12 is a rectangular plate structure, and a rectangular through hole is arranged at each of the left and right ends of the upper end face of the floating plate piece 12. A second sliding cylinder 1201 is arranged at each of the four corners of the upper end face of the floating plate piece 12. A limiting sliding rod fixedly arranged inside the transfer box 4 is slidably connected inside each second sliding cylinder 1201, and the four limiting sliding rods penetrate through the floating plate piece 12. The counterweight 1202 is arranged at the middle part of the upper end face of the floating plate piece 12, and a rectangular notch is arranged at the middle part of the front side of the upper end face of the floating plate piece 12. The driving rack 1203 is fixedly arranged at the left side face inside the rectangular notch of the floating plate piece 12. The transfer box 4 is provided with a transmission assembly 13. The heat dissipation piece 3, the transfer box 4 and the heat absorbing pipe piece 7 are all filled with cooling liquid. When the liquid level of the cooling liquid inside the transfer box 4 reaches one half of the height of the transfer box 4, the floating plate piece 12 is located at the middle side inside the transfer box 4, and the bottom end face of the pressing plate 504 is in close contact with the button of the pressing switch 505, so that the button of the pressing switch 505 is pressed.

[0034] Among them, the housing 1 includes an air inlet pipe member 101, a rectangular air outlet 102, a heat conduction support plate 103, and a heat absorption fin 104. Two air inlet pipe members 101 communicating with the inside thereof are symmetrically arranged up and down on the rear end face of the housing 1, 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 conduction support plates 103 is two, and the cross-sections of both heat conduction support plates 103 are in the shape of "E", and the two heat conduction support plates 103 are respectively fixed at the upper and lower ends inside the housing 1. Six nickel-metal hydride battery packs 11 are installed on the opposite surfaces of the two heat conduction support plates 103, and eighteen heat absorption fins 104 are evenly arranged on the opposite surfaces of the two heat conduction support plates 103. Each heat absorption fin 104 is in the shape of "丰" (a Chinese character), so that the heat absorption fin 104 has a better heat absorption effect.

[0035] Among them, the transmission component 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 transfer box body 4. A rotating shaft is rotatably connected inside both rotating shaft supports 1301. The left rotating shaft penetrates the front side wall of the transfer box body 4. A waterproof shaft seal fixed inside the front end face of the transfer box body 4 is provided on the outside of 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 component 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 component 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 component 3. The blowing cover is in the shape of a rectangular lofting, and a blower is installed inside the blowing cover. Thus, after the blower is started, the heat dissipation fins 301 at the top of the heat dissipation component 3 can have a more efficient heat dissipation efficiency.

[0037] In use: when the six nickel-hydrogen battery packs 11 generate heat during operation, the heat generated outside the six nickel-hydrogen battery packs 11 is transferred to the internal cooling liquid through the two heat absorption pipes 7, and then the internal cooling liquid of the heat dissipation part 3 and the transfer box 4 is transported to the internal part of the two heat absorption pipes 7 through the shunt part 602, so that the cooling liquid with heat in the two heat absorption pipes 7 is converged through the tee pipe head 14 and then flows into the internal part of the heat dissipation part 3, and then the cooling liquid is cooled through the outer wall and the top heat dissipation fin 301 of the heat dissipation part 3, and then the cooled cooling liquid is transported to the two heat absorption pipes 7 through the circulating water pump 601 to complete the circulating cooling effect, at this time, the heat at the top and bottom of the six nickel-hydrogen battery packs 11 is transferred to the upper and lower heat conduction branch plates 103 respectively, and then the small heat dissipation fan 202 is started to make the external air enter the internal part of the blowing mechanism 2, and then the air is evenly blown to the heat absorption fins 104 on the opposite sides of the two heat conduction branch plates 103 through the blowing holes on the front side of the blowing mechanism 2, so that the heat on the heat absorption fins 104 on the opposite sides of the two heat conduction branch plates 103 is blown out from the internal part of the shell 1, so that the two heat conduction branch plates 103 are quickly and effectively cooled, and thus the heat at the top and bottom of the six nickel-hydrogen battery packs 11 can be quickly dissipated, thereby greatly improving the heat dissipation efficiency of the top and bottom of the nickel-hydrogen battery packs 11.

[0038] When the internal cooling liquid of the transfer box 4 is too little, the floating plate 12 slides downward under the gravity of the counterweight 1202 due to the lowering of the cooling liquid level, and then drives the rear first gear 1302 to rotate counterclockwise through the driving rack 1203, and then drives the second gear 1303 to rotate clockwise through the front first gear 1302, so that the sliding plate 501 moves downward through the pressing rack 503, and then the button on the pressing switch 505 is pressed downward through the bottom end face of the pressing plate 504, so that the controller 10 starts the buzzer 8, so that the buzzer 8 starts to emit warning sound, so that people find the buzzer 8 following the warning sound, and then people quickly realize that the internal cooling liquid of the transfer box 4 is too little under the warning of the buzzer 8 and the warning sign 9 near the buzzer 8, so that the internal cooling liquid of the transfer box 4 is supplemented in time, thereby greatly improving the reliability of the heat dissipation structure.

[0039] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for a hybrid electric vehicle, characterized in that: It includes a housing, with two blowing mechanisms provided at the rear side of the housing, a sealing plate provided at the top of the housing, and a heat dissipation component provided at the rear side of the upper end surface of the sealing plate; The heat dissipation component is of a rectangular box structure. In front of the heat dissipation component, 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. The buzzer and the pressing mechanism are in a general electrical connection through the controller; A circulation mechanism is installed on the front end surface of the housing. Six nickel-metal hydride battery packs are provided in the middle side of the housing interior. A total of two heat absorption pipe fittings are provided outside the six nickel-metal hydride battery packs in the housing interior. 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 and the six nickel-metal hydride battery packs are in a general electrical connection; A floating plate component is provided inside the transfer box body, and a transmission component is provided on the front end surface of the transfer box body; 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 interior are provided symmetrically up and down 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 provided 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 structure. 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. Each heat absorption fin is in a "丰" shape structure; The blowing mechanism includes an air inlet pipe and a small cooling fan. Three air inlet pipes communicating with the interior 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; The circulation mechanism includes a circulation water pump, a flow dividing component, and a diversion block. The circulation water pump is fixedly installed on the front end surface of the housing. 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 the flow dividing component through a water pipe, and the flow dividing component is connected to the front ends of the two heat absorption pipe fittings. The circulation water pump and the small cooling fan are both in a general electrical connection with the nickel-metal hydride battery packs through the vehicle-mounted controller on the power vehicle; The flow dividing component is of a 匚-shaped housing structure, and a diversion block is provided at the middle of the rear side surface inside the flow dividing component. The diversion block is of an isosceles triangle columnar structure.

2. The heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for a hybrid electric vehicle as described in claim 1, characterized in that: The heat dissipation component includes heat dissipation fins and partitions. Heat dissipation fins are evenly provided on the upper end surface of the heat dissipation component; Fifteen partitions are evenly provided inside the heat dissipation component, and the length of each partition accounts for nine-tenths of the width of the bottom end surface inside the heat dissipation component. A serpentine water channel is formed inside the heat dissipation component through the fifteen partitions; 3. The heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for hybrid electric vehicles as described 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 filling port of the liquid filling pipe is distributed in an upward 90-degree bend and has a funnel-shaped structure. A sealing cap is connected to the liquid filling port of the liquid filling pipe by thread, and a connecting rope is rotatably connected to the top surface of the sealing cap. The other end of the connecting rope is sleeved on the outside of the liquid filling pipe and located below the funnel-shaped liquid filling port. The height of the liquid filling port on the liquid filling pipe is two to three centimeters higher than the upper surface of the transfer box.

4. The heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for a hybrid electric vehicle as described 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. The sliding plate has a first sliding cylinder on both the front and rear sides, and each first sliding cylinder has a vertical sliding rod slidably connected inside to the upper part of a sealing plate fixed on the housing. The pressing switch is located on the upper part of the sealing plate on the housing. The sliding plate has a pressing rack and a pressing plate on its left and right ends, respectively. The pressing plate has an L-shaped plate structure and is located above the push-button switch. A transmission component is provided on the left side of the pressing rack.

5. The heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for a hybrid electric vehicle as described in claim 1, characterized in that: The floating plate includes a second slide cylinder, a counterweight, and a drive rack. The floating plate is a rectangular plate structure, and a rectangular opening is provided at both the left and right ends of the upper surface of the floating plate. A second slide cylinder is provided at each of the four included corners of the upper surface of the floating plate, and a limiting slide rod fixed inside the transfer box is slidably connected inside each second slide cylinder. All four limiting slide rods penetrate the floating plate. The floating plate has a counterweight block in the middle of the upper end face, and a rectangular notch is opened on the front side of the middle of the upper end face. A drive rack is fixed inside the left side of the rectangular notch on the floating plate.

6. The heat dissipation structure for the thermal resistance of a nickel-metal hydride battery pack for a hybrid electric vehicle as described in claim 4, 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 face of the transfer box. A rotating shaft is rotatably connected inside each of the two rotating shaft supports. The left rotating shaft passes through the front side wall of the transfer box. A waterproof shaft seal is fixed inside the front end face of the transfer box on the outside of the left rotating shaft. A first gear is provided at both the front and rear ends of the left rotating shaft, and a second gear that meshes with the first gear is provided at the front end of the right rotating shaft. When the transmission assembly is installed with the pressing mechanism and the floating plate, the second gear meshes with the pressing rack, and the rear first gear meshes with the drive rack.

7. The heat dissipation structure for thermal resistance of a nickel-metal hydride battery pack for hybrid electric vehicles as described in claim 1, characterized in that: The heat dissipation components, transfer box, and heat absorption pipe are all filled with coolant. When the coolant level inside the transfer box is half the height of the transfer box, the float plate is located in the middle part of the transfer box, and the bottom end of the press plate is in close contact with the button on the press switch.

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