IP67 super-long liquid-cooled battery pack

Abstract

The utility model discloses an IP67 super-long liquid-cooled battery pack, which comprises a shell, a battery arranged at the inner side of the shell and a cover plate arranged at the top of the shell, a water-cooled tube assembly positioned at the bottom of the battery is arranged at the inner side of the shell, and the water-cooled tube assembly comprises a third U-shaped tube fixedly arranged at one end of the bottom of the inner side of the shell; and the third U-shaped pipes are evenly arranged in the length direction of the shell, and the first U-shaped pipes are jointly arranged on the sides, close to the ends, of the adjacent third U-shaped pipes. According to the IP super-long liquid-cooled battery pack, the arranged telescopic water-cooled pipe assembly is matched with the thermal expansion and cold contraction piece, so that the pipeline can be automatically stretched or contracted when the temperature is changed, the heat dissipation effect is changed, the corresponding speed is high, the structure is simple, and the heat dissipation effect is always kept good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery pack, especially IP67 super long liquid cooling battery pack. BACKGROUND

[0002] With the rapid development of electric vehicles and energy storage technology, the performance requirements of battery packs are becoming higher and higher, especially in terms of heat dissipation and protection. IP67 super long liquid cooling battery pack emerged as the times required in this background, which combines efficient liquid cooling technology and high protection level design to meet the high performance requirements in complex environments. IP67 is a protection level standard for battery packs, where IP stands for Ingress Protection (Protection Level), and 6 represents the dustproof level, i.e. completely preventing foreign objects and dust from entering; 7 represents the waterproof level, i.e. can withstand immersion in water for a certain period of time (usually 1 meter deep for 30 minutes). Super long liquid cooling battery pack refers to the relatively long length of the battery pack, and the internal use of liquid cooling system.

[0003] The liquid cooling system circulates the cooling liquid inside the battery pack to remove the heat generated by the battery, thereby achieving effective heat dissipation. This cooling method has higher cooling efficiency and better temperature uniformity compared to traditional air cooling, which can significantly improve the performance and prolong the service life of the battery pack. However, the existing battery pack liquid cooling system has some limitations. Among them, the length and fixed position of the pipeline are fixed, which leads to poor self-adaptive performance in actual use. Specifically, the length and position of the pipeline of the existing system are determined according to the initial design of the battery pack, and cannot be dynamically adjusted according to the real-time working state or environmental conditions of the battery pack. In order to control the flow, the existing system usually needs to adjust the water pump or flow valve to achieve this. Although this method can adjust the cooling effect to some extent, it has the problems of slow response speed, high energy consumption, high maintenance cost, etc.

[0004] Therefore, it is necessary to propose an IP67 super long liquid cooling battery pack to solve the above problems. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide an IP67 super long liquid cooling battery pack, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] An IP super-long liquid-cooled battery pack, comprising a shell, a battery arranged inside the shell, and a cover plate arranged at the top of the shell, the inner side of the shell is provided with a water-cooled pipe assembly at the bottom of the battery, the water-cooled pipe assembly comprises a third U-shaped pipe fixedly arranged at one end of the bottom of the inner side of the shell, and the third U-shaped pipe is uniformly arranged along the length direction of the shell, the side of the adjacent third U-shaped pipe close to one end is commonly provided with a first U-shaped pipe, the end of the first U-shaped pipe close to the third U-shaped pipe is provided with a first inner pipe for movably and sealingly connecting with the inner side of the end of the adjacent two third U-shaped pipes, one end of one of the third U-shaped pipes at the most end is provided with a water inlet extending to the outer side of the shell, and the other end of the third U-shaped pipe at the most end is provided with a water outlet extending to the outer side of the shell.

[0008] The end of the L-shaped pipe away from the third U-shaped pipe is uniformly arranged along the length direction of the shell, and the upper end of the L-shaped pipe extends into the gap of the battery, two L-shaped pipes in each group are commonly provided with a second U-shaped pipe at the end away from the third U-shaped pipe, the end of the second U-shaped pipe close to the L-shaped pipe is provided with a pair of second inner pipes for movably and sealingly connecting with the inner side of the end of the L-shaped pipe away from the third U-shaped pipe, the upper ends of the L-shaped pipes close to one end in the adjacent two groups of L-shaped pipes are communicated, one end of one of the L-shaped pipes at the most end is communicated with one of the third U-shaped pipes at the most end, and the water inlet is arranged at one end of the other L-shaped pipe at the most end.

[0009] The bottom of the inner side of the shell is provided with a thermal expansion and contraction element for pushing the displacement of the second U-shaped pipe and the first U-shaped pipe.

[0010] Preferably, the thermal expansion and contraction element comprises a cylinder body fixedly arranged at the bottom of the inner side of the shell, one end of the inner side of the cylinder body is movably connected with a push rod, a thermal expansion and contraction spring is arranged between the end of the push rod and the inner wall of the cylinder body, the thermal expansion and contraction spring is a nickel-titanium alloy spring, and the end of the push rod away from the thermal expansion and contraction spring is used for fixedly connecting with the side wall of the first U-shaped pipe and the second U-shaped pipe.

[0011] Preferably, the thermal expansion and contraction element comprises a connecting seat fixedly arranged at the bottom of the inner side of the shell, a bimetallic strip is movably arranged on the side wall of the connecting seat, and one side of the bimetallic strip is used for movably connecting with the side wall of the first U-shaped pipe and the second U-shaped pipe.

[0012] Preferably, the upper ends of the L-shaped pipes close to one end in the adjacent two groups of L-shaped pipes are commonly provided with a fourth U-shaped pipe, and the bottom of the fourth U-shaped pipe is symmetrically provided with a third inner pipe for movably and sealingly connecting with the inner side of the upper end of the corresponding two L-shaped pipes.

[0013] Preferably, a linkage assembly for driving the fourth U-shaped tube lifting is arranged on the inner side of the shell, the linkage assembly comprises a guide post fixedly arranged on the inner side of the shell, a traction plate is vertically movably connected to the outer side of the upper end of the guide post, a pair of guide grooves are arranged on the two ends of the side of the traction plate in an inclined and parallel manner, the first U-shaped tube is provided with a second traction arm corresponding to the traction plate on one side, the second U-shaped tube is provided with a first traction arm corresponding to the traction plate on one side, the first traction arm and the second traction arm are both rotatably provided with a guide wheel for movably guiding connection with the guide groove on the end close to the traction plate, and the upper end of the traction plate is provided with a third traction arm, and the end of the third traction arm away from the traction plate is fixedly connected with the corresponding fourth U-shaped tube.

[0014] Preferably, the end of the barrel away from the push rod is provided with a through hole for exhaust.

[0015] Compared with the prior art, the IP67 super-long liquid-cooled battery pack has the following beneficial effects:

[0016] The IP67 super-long liquid-cooled battery pack can automatically expand or contract the pipeline when the temperature changes through the cooperation of the telescopic water-cooled pipe assembly and the thermal expansion and contraction piece, so as to change the heat dissipation effect, the corresponding speed is fast, the structure is simple, and the heat dissipation effect can always maintain a good effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 is a structural schematic view of the water-cooled pipe assembly of the utility model;

[0019] Figure 3 is a structural schematic view of part of the structure of the water-cooled pipe assembly in a split state;

[0020] Figure 4 is a structural schematic view of the push rod, the first traction arm and the traction plate in a split state;

[0021] Figure 5 is a structural schematic view of the first embodiment of the thermal expansion and contraction piece;

[0022] Figure 6 is a structural schematic view of the second embodiment of the thermal expansion and contraction piece.

[0023] In the diagram: 1. Cover plate; 2. Outer shell; 3. Battery; 4. Outlet; 5. Inlet; 6. First U-shaped tube; 7. Second U-shaped tube; 8. Third U-shaped tube; 9. Fourth U-shaped tube; 10. Traction plate; 11. First inner tube; 12. Second inner tube; 13. L-shaped tube; 14. Third inner tube; 15. Cylinder; 16. Push rod; 17. First traction arm; 18. Second traction arm; 19. Guide wheel; 20. Guide groove; 21. Guide post; 22. Third traction arm; 23. Thermal expansion and contraction spring; 24. Through hole; 25. Bimetallic strip; 26. Connecting seat. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-3 As shown, an IP67 ultra-long liquid-cooled battery pack includes a housing 2, a battery 3 disposed inside the housing 2, and a cover plate 1 disposed on the top of the housing 2. A water-cooling pipe assembly is disposed inside the housing 2 at the bottom of the battery 3. The water-cooling pipe assembly includes a third U-shaped tube 8 fixedly disposed at one end of the bottom of the inner side of the housing 2, and the third U-shaped tubes 8 are evenly arranged along the length of the housing 2. A first U-shaped tube 6 is disposed on the side of adjacent third U-shaped tubes 8 that are close to each other. A first inner tube 11 is disposed at the end of the first U-shaped tube 6 near the third U-shaped tube 8 for a movably sealed connection with the inner side of the adjacent ends of two adjacent third U-shaped tubes 8. One end of one of the third U-shaped tubes 8 at the outermost end has a water inlet 5 extending to the outside of the housing 2, and the other end of the third U-shaped tube 8 has a water outlet 4 extending to the outside of the housing 2. L-shaped tubes 13 are evenly arranged along the length of the outer casing 2 at the end away from the third U-shaped tube 8 on the inner side of the casing 2, and the upper end of the L-shaped tubes 13 extends into the gap of the battery 3. The L-shaped tubes 13 are arranged in pairs, and the ends of the two L-shaped tubes 13 in the same group away from the third U-shaped tube 8 are jointly provided with a second U-shaped tube 7. The end of the second U-shaped tube 7 near the L-shaped tube 13 is provided with a pair of second inner tubes 12 for movably sealing connection with the inner side of the end of the L-shaped tube 13 away from the third U-shaped tube 8. The upper ends of the L-shaped tubes 13 in the two adjacent groups of L-shaped tubes 13 are connected. One end of one of the L-shaped tubes 13 at the very end is connected to one of the third U-shaped tubes 8 at the very end. The water inlet 5 is provided at one end of the other L-shaped tube 13 at the very end. A thermal expansion and contraction component is provided at the bottom of the inner side of the casing 2 for pushing the second U-shaped tube 7 and the first U-shaped tube 6 to move.

[0026] like Figure 3 , Figure 5As shown in the figure, as an embodiment, the thermal expansion and contraction component includes a cylinder 15 fixedly arranged at the inner bottom of the shell 2, one end of the inner side of the cylinder 15 is movably connected with a push rod 16, a thermal expansion and contraction spring 23 is arranged between one end of the push rod 16 and the inner wall of the cylinder 15, and the thermal expansion and contraction spring 23 is a nickel-titanium alloy spring. The end of the cylinder 15 away from the push rod 16 is provided with a through hole 24 for exhaust, and the end of the push rod 16 away from the thermal expansion and contraction spring 23 is used for fixedly connecting with the side wall of the first U-shaped tube 6 and the second U-shaped tube 7.

[0027] As shown in the figure, Figure 6 As another embodiment, the thermal expansion and contraction component includes a connecting seat 26 fixedly arranged at the inner bottom of the shell 2, and a bimetallic strip 25 is movably arranged on the side wall of the connecting seat 26. The bimetallic strip 25 is composed of two metals of different materials and can bend towards one side when heated. When the temperature rises, the bimetallic strip 25 can push the first U-shaped tube 6 and the second U-shaped tube 7 to move outward. One side of the bimetallic strip 25 is used for movably connecting with the side wall of the first U-shaped tube 6 and the second U-shaped tube 7.

[0028] As shown in the figure, Figures 2-4 As shown in the figure, the upper ends of the L-shaped tubes 13 adjacent to each other in the two groups are commonly provided with a fourth U-shaped tube 9, and the bottom ends of the fourth U-shaped tube 9 are symmetrically provided with third inner tubes 14 for movably and sealingly connecting with the inner sides of the upper ends of the corresponding two L-shaped tubes 13.

[0029] Further, the inner side of the shell 2 is provided with a linkage assembly for driving the fourth U-shaped tube 9 to rise and fall. The linkage assembly includes a guide column 21 fixedly arranged at the inner side of the shell 2, a traction plate 10 vertically movably connected with the outer side of the upper end of the guide column 21, a pair of guide grooves 20 obliquely and parallelly arranged at the two ends of the side of the traction plate 10, a second traction arm 18 corresponding to the traction plate 10 arranged on one side of the first U-shaped tube 6, a first traction arm 17 corresponding to the traction plate 10 arranged on one side of the second U-shaped tube 7, a guide wheel 19 movably and guidingly connected with the guide groove 20 rotatably arranged at one end of the first traction arm 17 and the second traction arm 18 close to the traction plate 10, and a third traction arm 22 arranged at the upper end of the traction plate 10, and one end of the third traction arm 22 away from the traction plate 10 is fixedly connected with the corresponding fourth U-shaped tube 9.

[0030] When in use, the water outlet 4 and the water inlet 5 are used to connect a water pump, the water pump is used to draw and supply the cooling liquid, the specific method is adopted by using conventional technical means, and details are not described too much, the cooling liquid is drawn into the shell 2 through the water inlet 5, and then flows through the L-shaped pipe 13, the fourth U-shaped pipe 9, the second U-shaped pipe 7, the third U-shaped pipe 8 and the first U-shaped pipe 6, and finally is discharged through the water outlet 4, during the period, when the temperature in the shell 2 increases, the thermal expansion and cold contraction member is deformed to drive the first U-shaped pipe 6 and the second U-shaped pipe 7 to displace, and then the second inner pipe 12 and the first inner pipe 11 are extended, at the same time, the first U-shaped pipe 6 and the second U-shaped pipe 7 also drive the guide wheel 19 to displace through the second traction arm 18 and the first traction arm 17, and then the guide wheel 19 drives the traction plate 10 to rise through the guide groove 20, the traction plate 10 drives the fourth U-shaped pipe 9 to rise through the third traction arm 22, so that the length of the water cooling pipe assembly is increased, the contact area with the battery 3 is increased, and the flow is also increased, so that the heat dissipation effect is increased, and when the temperature in the shell 2 decreases, the length is shortened.

[0031] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An IP67 super-long liquid-cooled battery pack, comprising a shell (2), a battery (3) arranged inside the shell (2), and a cover plate (1) arranged on the top of the shell (2), characterized in that: The inner side of the outer shell (2) is provided with a water cooling pipe assembly located at the bottom of the battery (3). The water cooling pipe assembly includes a third U-shaped pipe (8) fixedly installed at one end of the bottom of the inner side of the outer shell (2). The third U-shaped pipe (8) is evenly arranged along the length direction of the outer shell (2). A first U-shaped pipe (6) is provided on the side of the adjacent third U-shaped pipe (8) that is close to one end. A first inner pipe (11) is provided at the end of the first U-shaped pipe (6) that is close to the third U-shaped pipe (8) for movably sealing connection with the inner side of the adjacent two third U-shaped pipes (8) that are close to one end. A water inlet (5) is provided at one end of one of the third U-shaped pipes (8) located at the outermost end, and a water outlet (4) is provided at one end of the other third U-shaped pipe (8) that extends to the outer side of the outer shell (2). L-shaped tubes (13) are evenly arranged along the length of the outer shell (2) at the end away from the third U-shaped tube (8), and the upper end of the L-shaped tubes (13) extends into the gap of the battery (3). The L-shaped tubes (13) are arranged in pairs. The two L-shaped tubes (13) in the same group are provided with a second U-shaped tube (7) at the end away from the third U-shaped tube (8). The end of the second U-shaped tube (7) near the L-shaped tube (13) is provided with a pair of second inner tubes (12) for movably sealing connection with the inner side of the end of the L-shaped tube (13) away from the third U-shaped tube (8). The upper ends of the L-shaped tubes (13) in two adjacent groups of L-shaped tubes (13) are connected. One end of one of the L-shaped tubes (13) at the far end is connected to one of the third U-shaped tubes (8) at the far end. The water inlet (5) is located at one end of the other L-shaped tube (13). The bottom inner side of the outer shell (2) is provided with a thermal expansion and contraction component for pushing the second U-shaped tube (7) and the first U-shaped tube (6) to move.

2. The IP67 ultra-long liquid-cooled battery pack of claim 1, wherein: The thermal expansion and contraction component includes a cylinder (15) fixedly disposed at the bottom of the inner side of the outer shell (2). A push rod (16) is movably connected to one end of the inner side of the cylinder (15). A thermal expansion and contraction spring (23) is disposed between one end of the push rod (16) and the inner wall of the cylinder (15). The thermal expansion and contraction spring (23) is a nickel-titanium alloy spring. The end of the push rod (16) away from the thermal expansion and contraction spring (23) is used to be fixedly connected to the side wall of the first U-shaped tube (6) and the second U-shaped tube (7).

3. The IP67 ultra-long liquid-cooled battery pack of claim 1, wherein: The thermal expansion and contraction component includes a connecting seat (26) fixedly disposed on the bottom inner side of the outer shell (2). A bimetallic strip (25) is movably disposed on the side wall of the connecting seat (26). One side of the bimetallic strip (25) is used to movably connect with the side walls of the first U-shaped tube (6) and the second U-shaped tube (7).

4. The IP67 ultra-long liquid-cooled battery pack of claim 3, wherein: The upper ends of the L-shaped tubes (13) of two adjacent groups of L-shaped tubes (13) are jointly provided with a fourth U-shaped tube (9), and the bottom ends of the fourth U-shaped tube (9) are symmetrically provided with a third inner tube (14) for movably sealingly connecting with the inner side of the upper end of the corresponding two L-shaped tubes (13).

5. The IP67 ultra-long liquid-cooled battery pack of claim 4, wherein: The inside of the shell (2) is provided with linkage assembly for driving the fourth U-shaped tube (9) lifting, the linkage assembly includes fixedly arranged in the inside of the shell (2) guide post (21), the upper end outside of the guide post (21) is vertically connected with traction plate (10), the both ends of the side of the traction plate (10) are obliquely and parallelly provided with a pair of guide slot (20), one side of the first U-shaped tube (6) is provided with the second traction arm (18) corresponding with the traction plate (10), one side of the second U-shaped tube (7) is provided with the first traction arm (17) corresponding with the traction plate (10), the first traction arm (17) and the second traction arm (18) are rotatably provided with the guide wheel (19) for being movably guided with the guide slot (20) at one end close to the traction plate (10), the upper end of the traction plate (10) is provided with the third traction arm (22), and one end away from the traction plate (10) of the third traction arm (22) is fixedly connected with the corresponding fourth U-shaped tube (9).

6. The IP67 ultra-long liquid-cooled battery pack of claim 2, wherein: The end away from the push rod (16) of the barrel (15) is provided with through hole (24) for exhaust.

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