New energy vehicle battery tray supporting heat dissipation and heat preservation

Abstract

The invention discloses a new energy vehicle battery tray supporting heat dissipation and heat preservation, the new energy vehicle battery tray comprises a tray and a battery, a cooling structure and a heat insulation structure are installed in the tray, the cooling structure comprises a water-cooling heat conduction plate, the water-cooling heat conduction plate is arranged in the tray and located below the battery, and a flow guide pipe is arranged in the water-cooling heat conduction plate; a liquid inlet pipe and a liquid outlet pipe which are communicated with the flow guide pipe are mounted on one side of the water-cooling heat-conducting plate; the heat insulation structure comprises heat insulation pads attached to the inner side wall and the bottom face of the tray, and the water-cooling heat conduction plate and the battery are both located in the heat insulation pads. A plurality of heat conduction plates are further installed in the tray in a sliding mode, a plurality of batteries are arranged between every two adjacent heat conduction plates, and the heat conduction plates are connected with positioning adjusting mechanisms used for adjusting the distance between every two adjacent heat conduction plates. According to the battery tray, through the arrangement of the water-cooling heat conduction plate and the temperature conduction plate, the heat conduction area of a battery can be increased, heat conduction is more uniform and rapid, and meanwhile, the heat insulation structure is arranged, so that heat loss can be reduced in a low-temperature environment.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a battery tray for new energy vehicles that supports heat dissipation and heat preservation. Background Art

[0002] The new energy battery tray is the battery-carrying structure of new energy vehicles. As the skeleton of the battery system, the battery tray bears the weight of the battery pack and is used to ensure battery safety and performance.

[0003] Chinese patent publication number CN219017762U discloses a liquid-cooled battery tray, comprising: a support plate, the support plate being provided with a mounting groove, a liquid cooling groove being provided on the bottom surface of the mounting groove, the liquid cooling groove being provided with an inlet end and an outlet end; a heat conducting plate, the heat conducting plate being located in the mounting groove and forming a liquid cooling channel with the liquid cooling groove, the heat conducting plate being used to fit the battery module; a liquid inlet connector and a liquid outlet connector, the liquid inlet connector and the liquid outlet connector being plugged into the same end of the heat conducting plate and respectively connected to the inlet end and the outlet end; wherein the thermal conductivity of the support plate is smaller than that of the heat conducting plate. The liquid cooling channel adopts a combined structure of the support plate and the heat conducting plate, the thermal conductivity of the support plate being set smaller than that of the heat conducting plate, reducing the heat from the external environment being absorbed by the cooling medium in the cooling liquid channel, which is beneficial to reducing heat loss. The battery module is fitted on the heat conducting plate, and heat is transferred to the cooling medium in the liquid cooling channel through the heat conducting plate to achieve effective heat dissipation for the battery module.

[0004] The above-mentioned prior art mentions that the new energy vehicle battery is installed above the heat conducting plate to dissipate heat and cool the battery, but the heat conducting plate only contacts the bottom of the battery for heat transfer, and the contact area and heat dissipation effect are limited. The temperature on the top or side of the battery may be significantly higher than the bottom, affecting the overall temperature uniformity. Moreover, the device has a poor thermal insulation effect on the battery. Use in a low temperature environment will increase the internal resistance of the battery, resulting in a decrease in the operating voltage and discharge power of the battery. Therefore, a new energy vehicle battery tray that supports heat dissipation and heat preservation is needed to meet people's needs. Summary of the Invention

[0005] The purpose of the present invention is to provide a new energy vehicle battery tray that supports heat dissipation and heat preservation, so as to solve the problem in the prior art that the tray has limited heat dissipation effect, resulting in insufficient overall temperature uniformity and poor heat preservation effect for the battery.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: A battery tray for new energy vehicles that supports heat dissipation and heat preservation includes a tray with a plurality of batteries installed inside, and a cooling structure and a heat insulation structure installed inside the tray. The cooling structure includes a water-cooled heat conducting plate, which is placed in the tray and below the battery. A flow guide pipe is provided inside the water-cooled heat conducting plate, and a liquid inlet pipe and a liquid outlet pipe connected to the flow guide pipe are installed on one side of the water-cooled heat conducting plate. The thermal insulation structure includes a thermal insulation pad attached to the inner side wall and bottom surface of the tray, and the water-cooled heat conducting plate and the battery are located inside the thermal insulation pad; A plurality of heat conducting plates are slidably mounted inside the tray, a plurality of batteries are arranged between adjacent heat conducting plates, and a positioning adjustment mechanism is connected to the heat conducting plates to adjust the distance between two adjacent heat conducting plates.

[0007] As a specific embodiment, the positioning and adjustment mechanism includes a connecting frame group, an adjusting screw sleeve, and a fixed screw. The connecting frame group corresponds to the heat conduction plate in number and position. Each connecting frame group includes two connecting frames, which are symmetrically arranged on both sides of the width direction of the corresponding heat conduction plate; there are two fixed screws, which are fixedly installed on both sides of the length direction of the connecting frame, and through holes are opened on both end portions of the connecting frame. The connecting frame is sleeved on the fixed screw through the through holes. The adjusting screw sleeve corresponds to the connecting frame group in number and position. An adjusting screw sleeve is arranged between the two connecting frames in each connecting frame group, and the adjusting screw sleeve is threadedly connected to the fixed screw.

[0008] As a specific embodiment, each of the connecting frames includes two connecting plates at both ends, a positioning screw connected between the two connecting plates, and a plurality of limit nut groups sleeved on the positioning screw and threadedly connected to the positioning screw. The limit nut groups on the two connecting frames on both sides of the same heat conduction plate are symmetrically arranged. The positioning adjustment mechanism also includes a positioning plate group, and the positioning plate group corresponds to the heat conduction plate in number and position. Each group of the positioning plate groups includes a plurality of positioning plates movably clamped on the heat conduction plate at intervals along the length direction of the heat conduction plate. Each positioning plate corresponds to a pair of symmetrically arranged limit nut groups on both sides of the heat conduction plate. Each group of limit nut groups includes two limit nuts, and the two limit nuts are symmetrically pressed against the two sides of the corresponding positioning plate along the length direction of the positioning screw.

[0009] As a specific embodiment, two mutually parallel guide bars are installed on the inner wall of the tray, and guide holes matching with the guide bars are opened on the heat conduction plate. The heat conduction plate is slidably arranged along the length direction of the guide bars through the guide holes.

[0010] As a specific implementation, a temperature conducting pipe is provided inside the temperature conducting plate, and the temperature conducting pipe is connected to the flow conducting pipe on the water-cooled heat conducting plate through a flow conducting structure.

[0011] As a specific embodiment, the flow guide structure includes a connecting pipe, a shunt pipe, a transfer pipe and a bellows. The connecting pipe is arranged outside the heat conduction plate and is connected to the heat conduction pipe. The shunt pipe is connected to the flow guide pipe on the water-cooled heat conduction plate. The shunt pipe and the bellows, and the bellows and the connecting pipe are respectively connected through a transfer pipe.

[0012] As a specific embodiment, fixing parts are provided between the diverter pipe and the transfer pipe, and between the connecting pipe and the transfer pipe. The fixing parts include an umbrella-shaped ring and a sealing ring. The sealing ring is in contact with the inner wall of the transfer pipe, and the umbrella-shaped ring is pressed against the outer side of the sealing ring. The fixing parts also include a plurality of pressing screws. The plurality of pressing screws are evenly spaced along the circumference of the transfer pipe. Each pressing screw passes through the side wall of the transfer pipe along its own axial direction and presses on the side wall of the corresponding diverter pipe or connecting pipe, while contacting the inclined surface of the umbrella-shaped ring.

[0013] As a specific embodiment, the bellows is also provided with a reinforcement structure for fixing it, and the reinforcement structure includes a reinforcement sleeve, a connecting rod, a support sleeve rod and a mounting seat. The reinforcement sleeve fixing sleeve is arranged on the radial outer side of the bellows. There are two connecting rods, which are symmetrically installed on both sides of the reinforcement sleeve. The length extension direction of the connecting rod is arranged parallel to the axial centerline direction of the bellows. The upper and lower sides of each connecting rod are slidably sleeved with a support sleeve rod, and the end of the support sleeve rod away from the connecting rod is installed on the outer surface of the transfer tube on the corresponding side through the mounting seat.

[0014] As a specific embodiment, the tray further includes a heating rod inserted into the guide tube.

[0015] As a specific implementation method, the temperature conducting pipe is composed of a main pipe I and multiple branch pipes I with a feather-like network structure; the flow conducting pipe is composed of a main pipe II and multiple branch pipes II with an arc-shaped parallel vein structure.

[0016] Compared with the prior art, the present invention is beneficial in that: 1) The battery tray of the present invention allows the heat generated by the new energy vehicle battery during use to be transferred to the water-cooled heat conduction plate and the temperature conduction plate. The heat is exchanged with the medium in the flow guide tube in the water-cooled heat conduction plate and the temperature conduction tube in the temperature conduction plate, helping to cool the battery. The cooperation between the water-cooled heat conduction plate and the temperature conduction plate can increase the contact area and heat conduction area with the battery, making the heat conduction more uniform and further improving the cooling effect on the new energy vehicle battery. 2) When used in low-temperature environments, the heating rod can be turned on to heat the medium flowing through the guide tube, so that its temperature is transferred to the battery through the water-cooled heat conduction plate and the thermal conduction plate to heat the battery. In combination with the thermal insulation pad, heat loss can be reduced to meet the use requirements of the battery in low-temperature environments; 3) The battery is placed between the corresponding two temperature guide plates, the position of the temperature guide plate in the tray can be adjusted by rotating the adjusting sleeve, the distance between the adjacent temperature guide plates is changed and they are tightly attached to the two sides of the battery, at the same time, the position of the positioning plate can be adjusted by rotating the corresponding limiting nut, so that the positioning plate is tightly attached to the side of the battery, the positioning and installation of the battery can be realized under the cooperation of the temperature guide plate and the positioning plate, and various sizes of batteries can be installed and used at the same time; 4) Before adjusting the position of the temperature guide plate, the connecting restriction of the adapter pipe on the shunt pipe or the communication pipe can be released by rotating the pressing screw, at this time, the temperature guide plate will move the communication pipe, in the process, the adapter pipe will rotate on the corresponding shunt pipe or communication pipe and stretch the expansion pipe, so that the length of the expansion pipe can be stretched according to the moving distance of the temperature guide plate, at the same time, the normal transportation of water or cooling liquid will not be affected, and the normal use of the temperature guide function of the temperature guide plate is ensured; 5) The temperature guide pipe in the form of a feather-like net vein structure and the flow guide pipe in the form of an arc-shaped parallel vein structure are adopted, the heat exchange efficiency is high and the temperature distribution is uniform, and the local overheating phenomenon is avoided, thereby prolonging the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Figure 1 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 2 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 3 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 4 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 5 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 6 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 7 A three-dimensional structure schematic diagram of the new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application; Figure 8 A structure diagram of a guide structure of a new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application. Figure 9 A cross-sectional structure diagram of a guide structure of a new energy vehicle battery tray supporting heat dissipation and heat preservation is provided in the present application. Among them: 100, tray; 101, battery; 200, water-cooled heat conduction plate; 201, guide pipe; 202, liquid inlet pipe; 203, liquid outlet pipe; 204, heat insulation pad; 205, heating rod; 300, temperature guide plate; 301, connecting plate; 302, adjusting sleeve; 303, fixed screw; 304, guide bar; 305, guide hole; 306, positioning screw; 307, positioning plate; 308, limit nut; 400, shunt pipe; 401, communication pipe; 402, adapter pipe; 403, corrugated pipe; 404, umbrella-shaped collar; 405, sealing ring; 406, pressing screw; 407, reinforcing sleeve; 408, connecting rod; 409, support sleeve rod; 410, mounting seat; 411, temperature guide pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application: Referring to Figures 1 to 9 The present application discloses a new energy vehicle battery tray supporting heat dissipation and heat preservation, which comprises a tray 100, a plurality of batteries 101 are installed in the tray 100, a cooling structure and a temperature insulation structure are installed in the tray 100, and a plurality of temperature guide plates 300 are slidingly installed in the tray 100. A plurality of batteries 101 are arranged between adjacent temperature guide plates 300, and a positioning and adjusting mechanism is connected to the temperature guide plate 300 to adjust the distance between the two adjacent temperature guide plates 300.

[0019] Specifically, the cooling structure comprises a water-cooled heat conduction plate 200, which is arranged in the tray 100 below the battery 101. The water-cooled heat conduction plate 200 is internally provided with a guide pipe 201, and the water-cooled heat conduction plate 200 is provided with a liquid inlet pipe 202 and a liquid outlet pipe 203 on one side, which are in communication with the guide pipe 201. The guide pipe 201 is internally provided with a heating rod 205.

[0020] Here, the cooling structure adopts a flow guide tube 201 set in the water-cooled heat conductive plate 200, so that in a high-temperature environment, the cooling medium is transported to the flow guide tube 201 through the liquid inlet pipe 202. In this example, the cooling medium used is water, so that the heat generated by the battery 101 during use is transferred to the water-cooled heat conductive plate 200 in contact with its bottom surface. Through heat exchange with the cooling water in the flow guide tube 201, auxiliary heat dissipation of the battery 101 is achieved. In order to improve the heat transfer effect, thermal grease can be applied between the water-cooled heat conductive plate 200 and the battery 101.

[0021] When in a low temperature environment, the liquid flowing through the flow tube 201 can be heated by turning on the heating rod 205 , and the temperature is transferred to the battery 101 through the water-cooled heat conduction plate 200 to heat the battery 101 .

[0022] In this example, the thermal insulation structure includes a thermal pad 204 attached to the inner sidewalls and bottom surface of the tray 100. The water-cooled heat conducting plate 200 and the battery 101 are both located within the thermal pad 204. In this example, the thermal pad 204 is made of a polyurethane foam material or a ceramic silicone rubber insulation material, which can provide insulation and reduce heat loss.

[0023] In this example, the positioning and adjustment mechanism includes a connecting frame group, an adjusting screw sleeve 302, and a fixed screw 303. The connecting frame group corresponds to the heat conducting plate 300 in number and position. Each connecting frame group includes two connecting frames, which are symmetrically arranged on both sides of the width direction of the corresponding heat conducting plate 300; there are two fixed screws 303, which are fixedly installed on both sides of the length direction of the connecting frame. Through holes are provided on both end portions of the connecting frame, and the connecting frame is sleeved on the fixed screw 303 through the through holes. The adjusting screw sleeve 302 corresponds to the connecting frame group in number and position. An adjusting screw sleeve 302 is provided between the two connecting frames in each connecting frame group, and the adjusting screw sleeve 302 is threadedly connected to the fixed screw 303.

[0024] Each connecting frame includes two connecting plates 301 at both ends, a positioning screw 306 connected between the two connecting plates 301, and a plurality of limiting nuts 308 sleeved on the positioning screw 306 and threadedly connected to the positioning screw 306. The limiting nuts 308 on the two connecting frames on both sides of the same heat conducting plate 300 are symmetrically arranged, and the positioning adjustment mechanism also includes a group of positioning plates 307. The positioning plate 307 group corresponds to the heat conducting plate 300 in number and position. Each group of positioning plates 307 includes a plurality of positioning plates 307 that are movably clamped on the heat conducting plate 300 at intervals along the length direction of the heat conducting plate 300. Each positioning plate 307 corresponds to a pair of symmetrically arranged limiting nuts 308 on both sides of the heat conducting plate 300. Each group of limiting nuts 308 includes two limiting nuts 308. The two limiting nuts 308 are symmetrically pressed on both sides of the corresponding positioning plate 307 along the length direction of the positioning screw 306.

[0025] The spacing between two adjacent thermal conductive plates 300 is adjusted using a positioning adjustment mechanism based on the size of the battery 101 so that the thermal conductive plates 300 fit closely to the sides of the battery 101. Specifically, by rotating the adjusting screw 302, the corresponding connecting frame moves axially along the fixing screw 303, thereby moving the thermal conductive plate 300 along its width, ensuring that the thermal conductive plate 300 is in close contact with the corresponding battery 101.

[0026] After rotating the adjusting screw sleeve 302, the two limiting nuts 308 in the limiting nut 308 group on both sides of the rotating positioning plate 307 are contacted to limit the positioning plate 307, and the positioning plate 307 is pushed to adjust the distance between the two adjacent positioning plates 307 so that the two can fit the surface of the battery 101, and then the limiting nuts 308 are tightened to fix the positioning plate 307. During the specific adjustment process, the positioning plates 307 on the two adjacent heat conducting plates 300 need to be adjusted synchronously, so that the installation and positioning of the battery 101 can be achieved through the heat conducting plates 300 on both sides and the adjacent positioning plates 307, and it can adapt to the installation and use of batteries 101 of different sizes.

[0027] In this example, two parallel guide bars 304 are mounted on the inner wall of the tray 100. The heat conducting plate 300 is provided with guide holes 305 that mate with the guide bars 304. The heat conducting plate 300 slides along the length of the guide bars 304 through the guide holes 305. The guide bars 304 and guide holes 305 restrict the movement of the heat conducting plate 300, preventing it from shifting.

[0028] In this example, in order to improve the heat dissipation and heat preservation effect of the battery 101, a heat conducting pipe 411 is provided inside the heat conducting plate 300. The heat conducting pipe 411 is connected to the flow conducting pipe 201 on the water-cooled heat conducting plate 200 through a flow conducting structure.

[0029] Specifically, the diversion structure includes a connecting pipe 401, a diversion pipe 400, a transfer pipe 402 and a bellows 403. The connecting pipe 401 is arranged outside the heat conduction plate 300 and is connected to the heat conduction pipe 411. The diversion pipe 400 is connected to the diversion pipe 201 on the water-cooled heat conduction plate 200. The diversion pipe 400 and the bellows 403, and the bellows 403 and the connecting pipe 401 are respectively connected through a transfer pipe 402.

[0030] Fixing parts are also provided between the shunt pipe 400 and the transfer pipe 402, and between the connecting pipe 401 and the transfer pipe 402. The fixing parts include an umbrella-shaped ring 404 and a sealing ring 405. The sealing ring 405 is in contact with the inner wall of the transfer pipe 402, and the umbrella-shaped ring 404 is pressed against the outer side of the sealing ring 405. The fixing parts also include a plurality of pressing screws 406. The plurality of pressing screws 406 are evenly spaced along the circumference of the transfer pipe 402. Each pressing screw 406 passes through the side wall of the transfer pipe 402 along its own axial direction and presses against the side wall of the corresponding shunt pipe 400 or connecting pipe 401, while contacting the inclined surface of the umbrella-shaped ring.

[0031] Through the above technical solution, before adjusting the position of the heat conducting plate 300, the corresponding pressing screws 406 on both sides of the heat conducting plate 300 are rotated first. When the pressing screws 406 are rotated, they can move by cooperating with the threads of the transfer tube 402, so that the pressing screws 406 are separated from the extrusion of the surface of the shunt tube 400 or the connecting tube 401. At the same time, the pressing screws 406 will be separated from the contact with the inclined surface of the corresponding umbrella-shaped collar 404. At this time, the transfer tube 402 can have a certain amount of activity space on the shunt tube 400 or the connecting tube 401, and the heat conducting plate 300 can be moved. 0, the movement of the heat conducting plate 300 drives the corresponding connecting pipe 401 to move, thereby causing the corresponding two transfer pipes 402 to rotate on the shunt pipe 400 and the connecting pipe 401 respectively. At the same time, the distance between the two transfer pipes 402 will also change, thereby driving the bellows 403 to expand and contract to adapt. When the position of the heat conducting plate 300 is adjusted, the corresponding pressing screw 406 is rotated in the opposite direction to be squeezed against the inclined surface of the umbrella-shaped ring 404 again, so that the sealing ring 405 is tightly fitted with the inner wall of the transfer pipe 402 to improve the sealing performance.

[0032] In this example, the bellows 403 is also provided with a reinforcement structure for fixing it, and the reinforcement structure includes a reinforcement sleeve 407, a connecting rod 408, a support sleeve rod 409 and a mounting seat 401. The reinforcement sleeve 407 is fixedly sleeved on the radial outer side of the bellows 403. There are two connecting rods 408, which are symmetrically installed on both sides of the reinforcement sleeve 407. The length extension direction of the connecting rod 408 is set parallel to the axial center line direction of the bellows 403. A support sleeve rod 409 is slidably sleeved on the upper and lower sides of each connecting rod 408. The end of the support sleeve rod 409 away from the connecting rod 408 is installed on the outer surface of the transfer tube 402 on the corresponding side through the mounting seat 401.

[0033] By adopting the above technical solution, when the position of the transfer tube 402 changes during the movement of the heat conduction plate 300, the corresponding support sleeve rod 409 can be driven to slide on the connecting rod 408, and the connecting rod 408 and the support sleeve rod 409 are used to provide auxiliary support for the bellows 403 to prevent the bellows 403 from deforming.

[0034] In addition, in this example, the heat conducting tube 411 is composed of a main tube I and multiple branch tubes I with a pinnate network structure; the flow conduit 201 is composed of a main tube II and multiple branch tubes II with an arc-shaped parallel vein structure. Specifically, the heat conducting tube 411 adopts a topological structure similar to the pinnate network veins of the leaves of the genus Prunus in the Rosaceae family, dicotyledons, angiosperms, and the flow conduit 201 adopts a topological structure similar to the arc-shaped parallel veins of the leaves of the genus Melastoma in the Melastomataceae family, dicotyledons, angiosperms. The bionic leaf vein flow channel designs of the above two have the following advantages over traditional flow channel structures under the same coolant parameters: 1) High heat exchange efficiency: The leaf vein flow channel design mimics the leaf vein structure in nature, significantly reducing flow channel pressure drop, lowering flow resistance, and minimizing energy loss during liquid flow. This allows the liquid medium to flow faster, achieving higher heat exchange efficiency and more effectively controlling battery temperature. 2) Uniform temperature distribution: The bionic leaf vein flow channel design ensures that the liquid medium is evenly distributed in the thermal conductivity plate, ensuring uniform temperature in all parts of the battery pack, avoiding local overheating and extending the battery life.

[0035] In summary, the water-cooled heat conducting plate 200 with the built-in flow guide tube 201 and the heat conducting plate 300 with the built-in temperature conducting tube 411 achieve heat transfer to the side and bottom surfaces of the battery 101, making the heat dissipation or heat preservation of the battery 101 more uniform and improving the heat dissipation and heat preservation effects.

[0036] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the case.

Claims

1. A battery tray for a new energy vehicle supporting heat dissipation and heat preservation, comprising a tray (100), wherein a plurality of batteries (101) are installed in the tray (100), characterized in that: The tray (100) is internally installed with a cooling structure and a heat insulation structure. The cooling structure comprises a water-cooled heat conducting plate (200), the water-cooled heat conducting plate (200) being placed in the tray (100) and below the battery (101), a flow guide tube (201) being provided inside the water-cooled heat conducting plate (200), and a liquid inlet tube (202) and a liquid outlet tube (203) being installed on one side of the water-cooled heat conducting plate (200) and being connected to the flow guide tube (201); The thermal insulation structure includes a thermal insulation pad (204) attached to the inner side wall and bottom surface of the tray (100), and the water-cooled heat conducting plate (200) and the battery (101) are both located inside the thermal insulation pad (204); A plurality of heat conducting plates (300) are slidably mounted inside the tray (100), a plurality of batteries (101) are arranged between adjacent heat conducting plates (300), and a positioning adjustment mechanism is connected to the heat conducting plates (300) for adjusting the distance between two adjacent heat conducting plates (300).

2. A new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 1, characterized in that: The positioning adjustment mechanism comprises a connecting frame group, an adjusting screw sleeve (302), and a fixed screw rod (303). The connecting frame group corresponds to the heat conducting plate (300) in terms of number and position. Each connecting frame group comprises two connecting frames symmetrically arranged on both sides of the corresponding heat conducting plate (300) in the width direction. There are two fixed screw rods (303), which are respectively fixedly mounted on both sides of the connecting frame in the length direction. Through holes are provided on both end portions of the connecting frame. The connecting frame is sleeved on the fixed screw rod (303) through the through holes. The adjusting screw sleeve (302) corresponds to the connecting frame group in terms of number and position. An adjusting screw sleeve (302) is provided between the two connecting frames in each connecting frame group. The adjusting screw sleeve (302) is threadedly connected to the fixed screw rod (303).

3. A new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 2, characterized in that: Each of the connecting frames comprises two connecting plates (301) at both ends, a positioning screw (306) connected between the two connecting plates (301), and a plurality of limiting nut (308) groups sleeved on the positioning screw (306) and threadedly connected to the positioning screw (306). The limiting nut (308) groups on the two connecting frames on both sides of the same heat conducting plate (300) are symmetrically arranged. The positioning adjustment mechanism further comprises a positioning plate (307) group. The positioning plate (307) group corresponds to the heat conducting plate (300) in number and position. Correspondingly, each group of the positioning plates (307) includes a plurality of positioning plates (307) that are movably arranged on the heat conducting plate (300) at intervals along the length direction of the heat conducting plate (300), and each positioning plate (307) corresponds to a pair of symmetrically arranged limiting nuts (308) on both sides of the heat conducting plate (300), and each group of limiting nuts (308) includes two limiting nuts (308), and the two limiting nuts (308) are symmetrically pressed on both sides of the corresponding positioning plate (307) along the length direction of the positioning screw (306).

4. A new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 1, characterized in that: Two mutually parallel guide bars (304) are installed on the inner wall of the tray (100), and a guide hole (305) matching the guide bar (304) is opened on the heat conducting plate (300). The heat conducting plate (300) is slidably arranged along the length direction of the guide bar (304) through the guide hole (305).

5. The new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 1, characterized in that: A temperature conducting pipe (411) is provided inside the temperature conducting plate (300), and the temperature conducting pipe (411) is connected to the flow conducting pipe (201) on the water-cooled heat conducting plate (200) through a flow conducting structure.

6. A battery tray for new energy vehicles supporting heat dissipation and heat preservation according to claim 5, characterized in that: The flow guiding structure comprises a connecting pipe (401), a shunt pipe (400), a transfer pipe (402) and a bellows (403); the connecting pipe (401) is arranged outside the heat conducting plate (300) and is connected to the heat conducting pipe (411); the shunt pipe (400) is connected to the flow guiding pipe (201) on the water-cooled heat conducting plate (200); the shunt pipe (400) and the bellows (403), and the bellows (403) and the connecting pipe (401) are respectively connected via a transfer pipe (402).

7. A new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 6, characterized in that: A fixing member is provided between the diverter tube (400) and the transfer tube (402), and between the connecting tube (401) and the transfer tube (402). The fixing member includes an umbrella-shaped collar (404) and a sealing ring (405). The sealing ring (405) contacts the inner wall of the transfer tube (402), and the umbrella-shaped collar (404) presses against the outer side of the sealing ring (405). The fixing member also includes a plurality of pressing screws (406). The plurality of pressing screws (406) are evenly spaced along the circumference of the transfer tube (402). Each pressing screw (406) passes through the side wall of the transfer tube (402) along its own axial direction and presses against the side wall of the corresponding diverter tube (400) or connecting tube (401), while contacting the inclined surface of the umbrella-shaped collar.

8. The battery tray for new energy vehicles supporting heat dissipation and heat preservation according to claim 6, characterized in that: The bellows (403) is also provided with a reinforcement structure for fixing the bellows (403), the reinforcement structure comprising a reinforcement sleeve (407), a connecting rod (408), a support sleeve rod (409) and a mounting seat (410), the reinforcement sleeve (407) being fixedly mounted on the radial outer side of the bellows (403), two connecting rods (408) being symmetrically mounted on both sides of the reinforcement sleeve (407), the length extension direction of the connecting rod (408) being parallel to the axial centerline direction of the bellows (403), and a support sleeve rod (409) being slidably mounted on the upper and lower sides of each connecting rod (408), and the end of the support sleeve rod (409) away from the connecting rod (408) being mounted on the outer surface of the transfer tube (402) on the corresponding side thereof through the mounting seat (410).

9. The new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 1, characterized in that: The tray (100) further comprises a heating rod (205) inserted into the flow guide tube (201).

10. A new energy vehicle battery tray supporting heat dissipation and heat preservation according to claim 5, characterized in that: The temperature conducting pipe (411) is composed of a main pipe I and a plurality of branch pipes I with a feather-like network vein structure; the flow conducting pipe (201) is composed of a main pipe II and a plurality of branch pipes II with an arc-shaped parallel vein structure.

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