A high and low temperature integrated machine for testing new energy battery packs

Abstract

The present invention discloses a high and low temperature integrated machine for testing new energy battery packs, and relates to the technical field of battery testing devices. The present invention includes a transition chamber, and a low temperature chamber and a high temperature chamber are respectively arranged on both sides of the transition chamber, a refrigerator is fixedly installed on one side of the low temperature chamber, and a cold air pipe is fixedly installed on the output end of the refrigerator, and one end of the cold air pipe is connected to the interior of the low temperature chamber, and a heater is fixedly installed on one side of the high temperature chamber, and the same transmission rail is fixedly installed on the bottom inner wall of the transition chamber, the low temperature chamber and the high temperature chamber. The present invention sets a low temperature chamber and a high temperature chamber, so that the transport cart carries the battery pack and the testing equipment to move back and forth between the low temperature chamber and the high temperature chamber, so that the ambient temperature around the battery pack changes rapidly, the working state of the battery pack under the condition of drastic temperature changes is monitored, and the ability of the battery pack to resist ambient temperature changes is tested by continuously changing the ambient temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of battery testing devices, and in particular to a high and low temperature integrated machine for testing new energy battery packs. Background Art

[0002] With the development of the new energy vehicle industry, the research and development, production and product testing of battery packs, battery controllers and other related equipment have continuously put forward more and more demands on water-cooled temperature control equipment. In order to study and verify the performance of the battery pack during the charging and discharging process, it is necessary to simulate the performance of the battery pack and related components under different air environment conditions and different automotive antifreeze temperatures. In terms of the temperature range of automotive antifreeze, the current national standards and industry requirements for temperature testing range are generally between -40°C and 100°C.

[0003] At present, there are some special testing equipment for new energy battery packs in the market that can achieve large-scale temperature change regulation, precise control, and intelligent operation. They can test the working conditions of battery pack machine-related components under extreme temperatures. However, the current high and low temperature testing machines for battery packs can generally only test the performance of battery packs under high or low temperature conditions respectively, but cannot test the working performance of battery packs and related components under drastic changes in ambient temperature, and cannot test their ability to resist drastic changes in ambient temperature, resulting in incomplete actual test results. Therefore, a high and low temperature integrated machine for testing new energy battery packs is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that there are some special testing equipment for new energy battery packs in the current market that can achieve large-scale temperature change regulation, precise control, and intelligent operation, and can test the working conditions of related components of battery pack machines under extreme temperatures, but the current battery pack high and low temperature testing machines can generally only test the performance of the battery pack under high or low temperature conditions respectively, but cannot test the working performance of the battery pack and its related components under the condition of drastic changes in ambient temperature, and cannot test its ability to resist drastic changes in ambient temperature, resulting in the problem that the actual test results are not comprehensive. The present invention provides a new energy battery pack test high and low temperature integrated machine.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A high and low temperature integrated machine for testing new energy battery packs comprises a transition chamber, wherein a low temperature chamber and a high temperature chamber are respectively arranged on both sides of the transition chamber, a refrigerator is fixedly installed on one side of the low temperature chamber, a cold air pipe is fixedly installed on the output end of the refrigerator, one end of the cold air pipe is connected with the interior of the low temperature chamber, a heater is fixedly installed on one side of the high temperature chamber, the same transmission rail is fixedly installed on the bottom inner walls of the transition chamber, the low temperature chamber and the high temperature chamber, a transport flatbed truck is placed on the transmission rail, sealed door holes are opened on the inner walls of the low temperature chamber and the high temperature chamber on the sides close to each other, the transmission rail is arranged inside the two sealed door holes, and electric-driven sliding doors are arranged inside the sealed door holes.

[0007] Furthermore, vertically placed electric push rods are provided inside the low-temperature chamber and the high-temperature chamber, and main temperature control plates are fixedly installed at the bottom ends of the electric push rods, and the positions of the main temperature control plates correspond to the positions of the transmission rails.

[0008] Furthermore, side temperature control plates are provided on both sides of the main temperature control plate, a plurality of double-headed spring rods are fixed on the top of the main temperature control plate, hinge frames are fixedly installed on both ends of the double-headed spring rods, one end of the plurality of hinge frames located on both sides is respectively fixedly installed on one side of the two side temperature control plates, and steering motors are fixedly installed on both sides of the main temperature control plate, and the output shafts of the two steering motors are respectively fixedly installed on one side of two of the hinge frames.

[0009] Furthermore, a temperature regulating box is fixedly installed inside the low-temperature chamber and the high-temperature chamber, and the two electric push rods are respectively fixedly installed on one side of the two temperature regulating boxes, and an infusion pump and a return pipe connected with the interior of the temperature regulating box are fixedly installed on one side of the temperature regulating box, an infusion pipe is fixedly installed at the output end of the infusion pump, and a folded bellows is fixedly installed at the bottom end of the infusion pipe and the return pipe, two first main temperature regulating pipes are arranged inside the main temperature regulating plate, and the ends of the two first main temperature regulating pipes close to each other extend upward to the top of the main temperature regulating plate and are respectively fixedly connected to the two folded bellows, a second main temperature regulating pipe is arranged inside the main temperature regulating plate, and both ends of the second main temperature regulating pipe and the ends of the two first main temperature regulating pipes away from each other extend to the outside of the main temperature regulating plate and are fixedly installed with hoses, and hoses are arranged inside the side temperature regulating plates, and one end of the four hoses respectively extends to the interior of the two side temperature regulating plates and is respectively fixedly connected to the two ends of the two hoses.

[0010] Furthermore, a plurality of evenly distributed heat exchange fins are fixedly mounted on both sides of the temperature regulating box, and the interior of the heat exchange fins is a hollow structure and is connected to the interior of the temperature regulating box.

[0011] Furthermore, two symmetrically distributed supporting plates are fixedly installed on the top of the transport flatbed truck, and a plurality of evenly distributed polygonal slots are opened on the top of the supporting plate, and a fastening thread groove is opened on the bottom inner wall of the polygonal slots, wherein a polygonal rod is inserted into the interior of the plurality of polygonal slots, and a fastening screw matched with the fastening thread groove is rotatably provided at the bottom end of the polygonal rod, and a fastening shaft is rotatably installed on the top of the polygonal rod, and a rotating hole is opened inside the polygonal rod, and the bottom end of the fastening shaft passes through the rotating hole and is fixedly connected to the top end of the fastening screw, and an adjusting thread groove is opened at the other end of the polygonal rod, and an adjusting screw is threadedly connected to the interior of the adjusting thread groove, and a stop plate is fixedly installed on one end of the adjusting screw.

[0012] Furthermore, a hot air pipe is fixedly installed on the refrigerator, and one end of the hot air pipe is connected to the interior of the high temperature chamber.

[0013] Furthermore, an exhaust valve is fixedly installed on the top of the transition chamber.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention sets a low-temperature chamber and a high-temperature chamber, so that during the test, the transport truck carries the battery pack and the test equipment and moves back and forth between the low-temperature chamber and the high-temperature chamber, so that the ambient temperature around the battery pack changes rapidly, thereby monitoring the working state of the battery pack under the condition of drastic temperature changes, and by controlling the transport truck to move back and forth and continuously changing the ambient temperature, the ability of the battery pack to resist ambient temperature changes is tested;

[0016] 2. The present invention sets a main temperature control plate, so that when the transport truck carries the battery pack into the low-temperature room or high-temperature room, the temperature of the battery pack is still at room temperature or low-temperature or high-temperature state, and the electric push rod drives the main temperature control plate to descend and contact with the top of the battery pack, so that the main temperature control plate and the battery pack exchange heat, change the heat exchange medium of the battery pack, accelerate the temperature change of the battery pack, and improve the speed of change of the ambient temperature;

[0017] 3. The present invention sets a side thermostatic plate, so that after the main thermostatic plate descends and contacts the top of the battery pack, the steering motor will drive the side thermostatic plate to rotate and contact the two sides of the top of the battery pack, thereby increasing the area of ​​medium improvement and accelerating the heat exchange between the battery pack and the current environment. At the same time, during the rotation of the side thermostatic plate, the side thermostatic plate will contact the side of the top of the battery pack, and then drive the two ends of the double-headed spring rod to stretch through the hinge frame, which can not only increase the range of the battery pack to be adapted, but also increase the tightness of the side thermostatic plate and the side of the battery pack.

[0018] 4. The present invention provides a thermostatic box so that different heat exchange liquids are stored in the two thermostatic boxes. After the main thermostatic plate and the side thermostatic plate are close to the battery pack, the infusion pump extracts the heat exchange liquid from the thermostatic box and makes the heat exchange liquid flow through the main thermostatic plate and the side thermostatic plates on both sides, respectively, to exchange heat with the main thermostatic plate and the side thermostatic plates themselves, thereby improving the heat exchange effect of the main thermostatic plate and the side thermostatic plate on the battery pack and further accelerating the speed of battery temperature control;

[0019] 5. The present invention provides heat exchange fins so that a plurality of evenly arranged heat exchange fins can greatly increase the heat exchange area between the thermostat and the low-temperature chamber and the high-temperature chamber, so that the temperature of the heat exchange fluid inside the thermostat can be quickly restored to the current ambient temperature after the main thermostat and the side thermostat are heated, thus meeting the long-term heat exchange requirements;

[0020] 6. The present invention provides a polygonal rod, so that when the battery pack and the test equipment are placed on the supporting plate on the top of the transport flatbed truck, the polygonal rod can be inserted into the polygonal slots distributed around the battery pack, and the abutment plate is facing the battery pack. Then, the fastening shaft is rotated to drive the fastening screw to screw into the fastening thread groove to fix the polygonal rod. Then, the abutment plate is rotated to screw the adjusting screw out from the inside of the polygonal rod until the adjusting screw contacts the side wall of the battery pack, thereby fixing the battery pack and effectively preventing the battery pack and the test equipment from tipping over during transportation.

[0021] 7. The present invention provides an exhaust valve so that during testing, an external vacuum pump can extract the air inside the transition chamber through the exhaust pipe and the exhaust valve, thereby significantly reducing the air content inside the transition chamber, reducing the heat conduction rate of the transition chamber, and significantly reducing the heat exchange between the low-temperature chamber and the high-temperature chamber through the electric sliding door and the transition chamber, thereby avoiding affecting the ambient temperature of the low-temperature chamber and the high-temperature chamber during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the transition chamber, the low-temperature chamber and the high-temperature chamber of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the transport plate truck of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the thermostat box and the main thermostat plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the main temperature regulating plate and the side temperature regulating plate of the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the reflux tube and the infusion tube of the present invention;

[0028] Figure 7 It is a schematic diagram of the top three-dimensional structure of the transport flatbed truck of the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the polygonal rod of the present invention;

[0030] Figure numerals: 1. transition chamber; 2. low temperature chamber; 3. high temperature chamber; 4. refrigerator; 5. cold air pipe; 6. heater; 7. transmission rail; 8. transport cart; 9. electric sliding door; 10. electric push rod; 11. main temperature control plate; 12. side temperature control plate; 13. double-headed spring rod; 14. hinge frame; 15. steering motor; 16. temperature control box; 17. infusion pump; 18. return pipe; 19. infusion pipe; 20. folded bellows; 21. first main temperature control pipe; 22. second main temperature control pipe; 23. hose; 24. side temperature control pipe; 25. heat exchange fin; 26. support plate; 27. polygonal slot; 28. fastening thread groove; 29. ​​polygonal rod; 30. fastening screw; 31. fastening shaft; 32. adjusting screw; 33. abutment plate; 34. exhaust valve; 35. hot air pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] like Figures 1 to 8 As shown, a high and low temperature integrated machine for testing a new energy battery pack includes a transition chamber 1, a low temperature chamber 2 and a high temperature chamber 3 are respectively arranged on both sides of the transition chamber 1, a refrigerator 4 is fixedly installed on one side of the low temperature chamber 2, a cold air pipe 5 is fixedly installed on the output end of the refrigerator 4, one end of the cold air pipe 5 is connected to the interior of the low temperature chamber 2, and a heater 6 is fixedly installed on one side of the high temperature chamber 3. Figure 2 As shown, the same transmission rail 7 is fixedly installed on the bottom inner wall of the transition chamber 1, the low-temperature chamber 2 and the high-temperature chamber 3, and a transport cart 8 is placed on the transmission rail 7. Sealed door holes are opened on the inner walls of the low-temperature chamber 2 and the high-temperature chamber 3 on the side close to each other, and the transmission rail 7 is arranged inside the two sealed door holes, and an electric drive sliding door 9 is arranged inside the sealed door holes. In this embodiment, a sealed sliding door is arranged on one side of the transition chamber 1, which is used to put the battery pack and the test equipment to be tested into the transition chamber 1, and keep the interior of the transition chamber 1 sealed during the test. The transport cart 8 has its own power system and can carry the battery pack and the test equipment to move on the transmission rail 7; specifically, the new energy battery pack test high and low temperature integrated machine is provided with a low-temperature chamber 2 and a high-temperature chamber 3, so that the battery pack and the test equipment can be placed together during the test. It is placed on the transport cart 8, and then the refrigerator 4 and the heater 6 respectively adjust the temperatures inside the low-temperature chamber 2 and the high-temperature chamber 3, so that the interior of the low-temperature chamber 2 is in a low-temperature environment and the interior of the high-temperature chamber 3 is in a high-temperature environment. Then the electric-driven sliding door 9 on one side of the transition chamber 1 is opened, and the transport cart 8 carries the battery pack and the test equipment through the sealed door hole on this side to enter the low-temperature chamber 2 or the high-temperature chamber 3 for high and low temperature tests. When the temperature of the battery pack is adjusted to the current ambient temperature, the electric-driven sliding doors 9 on both sides are opened, and the transport cart 8 carries the battery pack and quickly passes through the two sealed door holes, so that the ambient temperature around the battery pack changes rapidly, thereby monitoring the working status of the battery pack under the condition of drastic temperature changes, and by controlling the transport cart 8 to move back and forth and constantly changing the ambient temperature, the battery pack's ability to resist changes in ambient temperature is tested.

[0036] like Figure 4As shown, the interior of the low-temperature chamber 2 and the high-temperature chamber 3 are both provided with a vertically placed electric push rod 10, and the bottom end of the electric push rod 10 is fixedly installed with a main temperature control plate 11, and the position of the main temperature control plate 11 corresponds to the position of the transmission rail 7; specifically, by setting the main temperature control plate 11, when the transport cart 8 carries the battery pack into the low-temperature chamber 2 or the high-temperature chamber 3, the temperature of the battery pack is still at room temperature or low temperature or high temperature state, and the electric push rod 10 will drive the main temperature control plate 11 to descend and contact with the top of the battery pack, so that the main temperature control plate 11 and the battery pack exchange heat, change the heat exchange medium of the battery pack, accelerate the temperature change of the battery pack, and increase the change speed of the ambient temperature.

[0037] like Figure 5 As shown, side temperature regulating plates 12 are arranged on both sides of the main temperature regulating plate 11, a plurality of double-headed spring rods 13 are fixed on the top of the main temperature regulating plate 11, hinge frames 14 are fixedly installed at both ends of the double-headed spring rods 13, one end of the plurality of hinge frames 14 located on both sides is respectively fixedly installed on one side of the two side temperature regulating plates 12, a steering motor 15 is fixedly installed on both sides of the main temperature regulating plate 11, and the output shafts of the two steering motors 15 are respectively fixedly installed on one side of two of the hinge frames 14. In this embodiment, the hinge frame 14 is composed of two hinge rods hinged to each other, and the two hinge rods are respectively fixedly connected to the double-headed spring rods 13 and the side temperature regulating plates 12, and the output shaft of the steering motor 15 is fixedly installed on the hinge fixedly connected to the side temperature regulating plates 12 On the side wall of the chain rod, the axial position of the output shaft of the steering motor 15 is consistent with the rotation axis position of the hinge frame 14; specifically, by setting the side temperature control plate 12, after the main temperature control plate 11 descends and contacts the top of the battery pack, the steering motor 15 will drive the hinge frames 14 on both sides to drive the side temperature control plates 12 to rotate until they contact the two sides of the top of the battery pack, thereby increasing the area of ​​medium improvement and accelerating the heat exchange between the battery pack and the current environment. At the same time, during the rotation of the side temperature control plate 12, the side temperature control plate 12 will contact the side of the top of the battery pack, and then drive the two ends of the double-headed spring rod 13 to stretch through the hinge frame 14, which can not only increase the range of adaptation of the battery pack, but also increase the tightness of the side temperature control plate 12 and the side of the battery pack.

[0038] like Figure 4 As shown, a temperature regulating box 16 is fixedly installed inside the low temperature chamber 2 and the high temperature chamber 3, and two electric push rods 10 are fixedly installed on one side of the two temperature regulating boxes 16, respectively. An infusion pump 17 and a return pipe 18 connected to the inside of the temperature regulating box 16 are fixedly installed on one side of the temperature regulating box 16, and an infusion pipe 19 is fixedly installed at the output end of the infusion pump 17. The bottom ends of the infusion pipe 19 and the return pipe 18 are fixedly installed with a folded corrugated pipe 20, as shown in FIG. Figure 6As shown, two first main temperature regulating tubes 21 are arranged inside the main temperature regulating plate 11, and the ends of the two first main temperature regulating tubes 21 close to each other extend upward to the top of the main temperature regulating plate 11 and are respectively fixedly connected to the two folded corrugated tubes 20, and a second main temperature regulating tube 22 is arranged inside the main temperature regulating plate 11, and both ends of the second main temperature regulating tube 22 and the ends of the two first main temperature regulating tubes 21 away from each other extend to the outside of the main temperature regulating plate 11 and are fixedly installed with hoses 23, and hoses 23 are arranged inside the side temperature regulating plates 12, and one end of the four hoses 23 extends to the inside of the two side temperature regulating plates 12 and is respectively fixedly connected to the two ends of the two hoses 23. In this embodiment, the length of the hose 23 is always greater than the length of the main temperature regulating plate 11 and the side temperature regulating plate 12. specifically, by setting a thermostat 16, different heat exchange fluids are stored in the two thermostats 16, which are used for cooling and heating respectively. After the main thermostat 11 and the side thermostat 12 are close to the battery pack, the infusion pump 17 draws the heat exchange fluid from the thermostat 16 and flows through the infusion pipe 19, the folded bellows 20, the first main thermostat 21, the second main thermostat 22, the hose 23, the side thermostat 24, etc., and flows back to the thermostat 16 through the reflux pipe 18, so that the heat exchange fluid flows through the main thermostat 11 and the side thermostats 12 on both sides respectively, and heat is exchanged with the main thermostat 11 and the side thermostat 12 themselves, thereby improving the heat exchange effect of the main thermostat 11 and the side thermostat 12 on the battery pack, and further accelerating the speed of battery temperature control.

[0039] like Figure 4 As shown, a plurality of evenly distributed heat exchange fins 25 are fixedly installed on both sides of the temperature control box 16, and the interior of the heat exchange fins 25 is a hollow structure and is connected with the interior of the temperature control box 16; specifically, by arranging the heat exchange fins 25, a plurality of evenly arranged heat exchange fins 25 can greatly increase the heat exchange area between the temperature control box 16 and the low-temperature chamber 2 and the high-temperature chamber 3, so that the temperature of the heat exchange liquid in the temperature control box 16 can also be quickly restored to the current ambient temperature after heat exchange with the main temperature control plate 11 and the side temperature control plate 12, thereby meeting the long-term heat exchange demand.

[0040] like Figure 3 As shown, two symmetrically distributed supporting plates 26 are fixedly installed on the top of the transport cart 8. Figure 7 As shown, the top of the support plate 26 is provided with a plurality of evenly distributed polygonal slots 27, and the bottom inner walls of the polygonal slots 27 are provided with fastening thread grooves 28, as shown in FIG. Figure 8As shown, a plurality of polygonal slots 27 are internally inserted with polygonal rods 29, the bottom end of the polygonal rods 29 is rotatably provided with a fastening screw 30 adapted to the fastening thread groove 28, the top of the polygonal rods 29 is rotatably provided with a fastening shaft 31, a rotating hole is provided inside the polygonal rods 29, the bottom end of the fastening shaft 31 passes through the rotating hole and is fixedly connected to the top end of the fastening screw 30, an adjusting thread groove is provided at the other end of the polygonal rods 29, an adjusting screw 32 is threadedly connected inside the adjusting thread groove, and a stop plate 33 is fixedly installed at one end of the adjusting screw 32. In this embodiment, the polygonal rods 29 are in an inverted "L" shape, and the adjusting screw 32 and the fastening screw 30 are adapted to the fastening thread groove 28. The axis of the screw 30 is vertical; specifically, by setting the polygonal rod 29, when the battery pack and the test equipment are placed on the supporting plate 26 on the top of the transport truck 8, the polygonal rod 29 can be inserted into the polygonal slots 27 distributed around the battery pack, and the abutment plate 33 is facing the battery pack. Then, the fastening shaft 31 is rotated to drive the fastening screw 30 to screw into the fastening thread groove 28 to fix the polygonal rod 29. Then, the abutment plate 33 is rotated to screw the adjusting screw 32 out from the inside of the polygonal rod 29 until the adjusting screw 32 contacts the side wall of the battery pack, thereby fixing the battery pack and effectively preventing the battery pack and the test equipment from tipping over during transportation.

[0041] like Figure 1 As shown, the refrigerator 4 is fixedly installed with a hot air pipe 35, one end of the hot air pipe 35 is connected to the interior of the high-temperature chamber 3. In the present embodiment, the exhaust end of the refrigerator 4 is connected to the hot air pipe 35. Specifically, by setting the exhaust valve 34, during the test, the external vacuum pump can extract the air inside the transition chamber 1 through the vacuum pipe and the exhaust valve 34, so that the air content inside the transition chamber 1 is greatly reduced, the heat conduction speed of the transition chamber 1 is reduced, and the heat exchange between the low-temperature chamber 2 and the high-temperature chamber 3 through the electric drive sliding door 9 and the transition chamber 1 is greatly reduced, so as to avoid affecting the ambient temperature of the test inside the low-temperature chamber 2 and the high-temperature chamber 3.

[0042] like Figure 1 As shown, an exhaust valve 34 is fixedly installed on the top of the transition chamber 1. In the present embodiment, the exhaust valve 34 is connected with an external exhaust pipe and an exhaust pump. Specifically, by setting a hot air pipe 35, a large amount of hot air generated by the refrigerator 4 during cooling can be transmitted to the interior of the high-temperature chamber 3 through the hot air pipe 35, and the auxiliary heater 6 heats the interior of the high-temperature chamber 3 to avoid heat consumption.

[0043] In summary: the new energy battery pack test high and low temperature integrated machine is provided with a low temperature chamber 2 and a high temperature chamber 3, so that during the test, the battery pack is placed together with the test equipment on a transport cart 8, and then the refrigerator 4 and the heater 6 respectively adjust the temperature inside the low temperature chamber 2 and the high temperature chamber 3, so that the inside of the low temperature chamber 2 is in a low temperature environment, and the inside of the high temperature chamber 3 is in a high temperature environment, and then the electric drive sliding door 9 on one side of the transition chamber 1 is opened, and the transport cart 8 carries the battery pack and the test equipment through the sealed door hole on this side to enter the low temperature chamber 2 or the high temperature chamber 3 for high and low temperature testing. When the battery pack temperature is adjusted to the current ambient temperature, the electric drive sliding doors 9 on both sides are opened, and the transport cart 8 carries the battery pack quickly through the two sealed door holes, so that the ambient temperature around the battery pack changes rapidly, thereby The working state of the battery pack under the condition of drastic temperature change is monitored, and the ambient temperature is constantly changed by controlling the transport cart 8 to move back and forth, and the ability of the battery pack to resist the change of ambient temperature is tested. By setting the main temperature control plate 11, when the transport cart 8 carries the battery pack into the low-temperature chamber 2 or the high-temperature chamber 3, the temperature of the battery pack is still at room temperature or low temperature or high temperature state, and the electric push rod 10 will drive the main temperature control plate 11 to descend and contact with the top of the battery pack, so that the main temperature control plate 11 and the battery pack exchange heat, change the heat exchange medium of the battery pack, accelerate the temperature change of the battery pack, and increase the speed of change of the ambient temperature. By setting the side temperature control plate 12, after the main temperature control plate 11 descends and contacts with the top of the battery pack, the steering motor 15 will drive the two The hinge frame 14 on the side drives the side temperature regulating plate 12 to rotate until it contacts the two sides of the top of the battery pack, thereby increasing the area of ​​medium improvement and accelerating the heat exchange between the battery pack and the current environment. At the same time, during the rotation of the side temperature regulating plate 12, the side temperature regulating plate 12 will contact the side of the top of the battery pack, and then drive the two ends of the double-headed spring rod 13 to stretch through the hinge frame 14, which can not only increase the range of adaptability to the battery pack, but also increase the tightness of the side temperature regulating plate 12 and the side of the battery pack. By setting the temperature regulating box 16, different heat exchange fluids are stored in the two temperature regulating boxes 16 for cooling and heating respectively. After the main temperature regulating plate 11 and the side temperature regulating plate 12 are close to the battery pack, the infusion pump 17 draws the heat exchange fluid from the temperature regulating box 16 and passes it through the infusion tube 19, the folded bellows 20, and the first main temperature regulating tube 21, the second main temperature regulating pipe 22, the hose 23, the side temperature regulating pipe 24, etc., and then flows back to the temperature regulating box 16 through the return pipe 18, so that the heat exchange liquid flows through the main temperature regulating plate 11 and the side temperature regulating plates 12 on both sides respectively, and heat is exchanged with the main temperature regulating plate 11 and the side temperature regulating plates 12 themselves, thereby improving the heat exchange effect of the main temperature regulating plate 11 and the side temperature regulating plates 12 on the battery pack, and further accelerating the speed of battery temperature control. By setting the heat exchange fins 25, multiple evenly arranged heat exchange fins 25 can greatly increase the heat exchange area between the temperature regulating box 16 and the low temperature chamber 2 and the high temperature chamber 3, so that the temperature of the heat exchange liquid in the temperature regulating box 16 can also be quickly restored to the current ambient temperature after heat is exchanged with the main temperature regulating plate 11 and the side temperature regulating plates 12, so as to meet the long-term heat exchange demand.By providing the polygonal rod 29, when the battery pack and the test equipment are placed on the supporting plate 26 on the top of the transport flatbed truck 8, the polygonal rod 29 can be inserted into the polygonal slots 27 distributed around the battery pack, and the abutment plate 33 is directed toward the battery pack. Then, the fastening shaft 31 is rotated to drive the fastening screw 30 to be screwed into the fastening thread groove 28 to fix the polygonal rod 29. Then, the abutment plate 33 is rotated to screw the adjusting screw 32 out from the inside of the polygonal rod 29 until the adjusting screw 32 contacts the side wall of the battery pack, thereby fixing the battery pack and effectively preventing the battery pack and the test equipment from tipping over during transportation. By providing the exhaust valve 34 , so that during the test, the external vacuum pump can extract the air inside the transition chamber 1 through the vacuum pipe and the exhaust valve 34, so that the air content inside the transition chamber 1 is greatly reduced, the heat conduction speed of the transition chamber 1 is reduced, and the heat exchange between the low-temperature chamber 2 and the high-temperature chamber 3 through the electric drive sliding door 9 and the transition chamber 1 is greatly reduced, so as to avoid affecting the ambient temperature of the test inside the low-temperature chamber 2 and the high-temperature chamber 3. By setting the hot air pipe 35, a large amount of hot air generated by the refrigerator 4 during cooling can be transmitted to the inside of the high-temperature chamber 3 through the hot air pipe 35, and the auxiliary heater 6 heats the inside of the high-temperature chamber 3 to avoid heat consumption. ,

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high and low temperature integrated machine for testing new energy battery packs, characterized in that: The invention comprises a transition chamber (1), wherein a low temperature chamber (2) and a high temperature chamber (3) are respectively arranged on both sides of the transition chamber (1), a refrigerator (4) is fixedly installed on one side of the low temperature chamber (2), a cold air pipe (5) is fixedly installed on the output end of the refrigerator (4), one end of the cold air pipe (5) is connected to the interior of the low temperature chamber (2), a heater (6) is fixedly installed on one side of the high temperature chamber (3), a same transmission rail (7) is fixedly installed on the bottom inner wall of the transition chamber (1), the low temperature chamber (2) and the high temperature chamber (3), a transport pallet (8) is placed on the transmission rail (7), a sealed door hole is opened on the inner wall of the low temperature chamber (2) and the high temperature chamber (3) on the side close to each other, the transmission rail (7) is arranged inside the two sealed door holes, and an electric drive sliding door (9) is arranged inside the sealed door holes; The low temperature chamber (2) and the high temperature chamber (3) are both provided with vertically placed electric push rods (10), the bottom ends of the electric push rods (10) are both fixedly mounted with main temperature control plates (11), the positions of the main temperature control plates (11) correspond to the positions of the transmission rails (7), side temperature control plates (12) are both provided on both sides of the main temperature control plates (11), a plurality of double-headed spring rods (13) are fixedly mounted on the top of the main temperature control plates (11), hinge frames (14) are both fixedly mounted on both ends of the double-headed spring rods (13), and the hinge frames (14) located on both sides are provided with hinge frames (15) on the top and bottom of the main temperature control plates (11). One end of the plurality of hinge frames (14) is respectively fixedly mounted on one side of the two side temperature control plates (12); a steering motor (15) is fixedly mounted on both sides of the main temperature control plate (11); the output shafts of the two steering motors (15) are respectively fixedly mounted on one side of two of the hinge frames (14); a temperature control box (16) is fixedly mounted inside the low temperature chamber (2) and the high temperature chamber (3); the two electric push rods (10) are respectively fixedly mounted on one side of the two temperature control boxes (16); one side of the temperature control box (16) An infusion pump (17) and a return pipe (18) which are in communication with the interior of the temperature regulating box (16) are fixedly installed on both sides of the main temperature regulating box (16); an infusion pipe (19) is fixedly installed on the output end of the infusion pump (17); and a folded corrugated pipe (20) is fixedly installed on the bottom ends of the infusion pipe (19) and the return pipe (18); two first main temperature regulating pipes (21) are arranged inside the main temperature regulating plate (11); the ends of the two first main temperature regulating pipes (21) which are close to each other extend upward to the top of the main temperature regulating plate (11) and are respectively connected to the two folded corrugated pipes. The main temperature regulating plate (11) is provided with a second main temperature regulating tube (22), both ends of the second main temperature regulating tube (22) and the ends of the two first main temperature regulating tubes (21) that are away from each other extend to the outside of the main temperature regulating plate (11) and are fixedly installed with hoses (23), and the side temperature regulating plates (12) are each provided with a hose (23), one end of the four hoses (23) respectively extends to the inside of the two side temperature regulating plates (12) and is fixedly connected to both ends of the two hoses (23).

2. The high and low temperature integrated machine for testing new energy battery packs according to claim 1, characterized in that: A plurality of evenly distributed heat exchange fins (25) are fixedly mounted on both sides of the temperature regulating box (16); the interior of the heat exchange fins (25) is a hollow structure and is in communication with the interior of the temperature regulating box (16).

3. The high and low temperature integrated machine for testing new energy battery packs according to claim 1, characterized in that: Two symmetrically distributed supporting plates (26) are fixedly installed on the top of the transport plate trolley (8), and a plurality of evenly distributed polygonal slots (27) are provided on the top of the supporting plate (26). A fastening threaded groove (28) is provided on the inner wall of the bottom of each polygonal slot (27), wherein a polygonal rod (29) is inserted into the interior of each polygonal slot (27), and a fastening screw (30) matching the fastening threaded groove (28) is rotatably provided at the bottom end of each polygonal rod (29). A fastening shaft (31) is rotatably installed on the top of each polygonal rod (29), and a rotating hole is provided inside the polygonal rod (29). The bottom end of the fastening shaft (31) passes through the rotating hole and is fixedly connected to the top end of the fastening screw (30). An adjusting threaded groove is provided at the other end of the polygonal rod (29), and an adjusting screw (32) is screwed into the interior of the adjusting threaded groove. A stop plate (33) is fixedly installed at one end of the adjusting screw (32).

4. The high and low temperature integrated machine for testing new energy battery packs according to claim 1, characterized in that: The refrigerator (4) is therefore fixedly mounted with a hot air pipe (35), one end of the hot air pipe (35) being in communication with the interior of the high temperature chamber (3).

5. The high and low temperature integrated machine for testing new energy battery packs according to claim 1, characterized in that: An exhaust valve (34) is fixedly mounted on the top of the transition chamber (1).

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