Water cooling mechanism for vehicle-mounted power supply of new energy automobile

Abstract

The utility model discloses a water cooling mechanism for a vehicle-mounted power supply of a new energy automobile, which relates to the field of new energy automobiles and comprises a shell, a plurality of groups of battery cells are arranged in the shell at intervals, a reinforcing frame is fixedly connected to the inner wall of the shell, and a water pipe is arranged in the reinforcing frame. A corrugated pipe of which the two ends are connected to the water pipes is arranged between the battery cells along the length direction, the two ends of the corrugated pipe are respectively connected with the water pipes on the two sides in the shell, a positioning frame for positioning the corrugated pipe is fixedly connected between the battery cells, and a heat-conducting filling layer for covering the corrugated pipe is filled between the battery cells. According to the cooling structure, the cooling pipelines parallel to the battery cells are arranged in the battery pack, so that cooling water can flow parallel to the battery cells during circulation, the battery cells in the battery pack are uniformly cooled, the heat exchange efficiency of the cooling water and the battery cells is effectively improved, and the cooling structure can efficiently and uniformly cool the battery pack.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, in particular to a water cooling mechanism for a vehicle-mounted power supply of a new energy vehicle. Background Art

[0002] New energy vehicles generally have a water cooling system in the battery pack, which is used to cool the battery when the battery is charging or discharging and generates heat, so that the lithium battery is maintained at a suitable temperature to avoid overheating and thermal runaway.

[0003] The on-board battery packs of existing new energy vehicles are generally equipped with serpentine cooling water pipes. The cooling water flowing in the pipes is connected to the on-board water pump and radiator. After absorbing heat in the battery pack, the water flows into the radiator to cool down and then flows back to the pipes in the battery pack. This cycle achieves cooling of the battery pack.

[0004] With respect to the above-mentioned related technologies, the water-cooling structure in the existing new energy vehicle battery pack exchanges heat with the battery cells in the battery pack through the pipe wall of the pipe. The contact area between the pipe wall and the battery cells in the battery pack is small, and the heat exchange efficiency is not high. In addition, since the existing cooling water pipe is arranged in a serpentine shape, the cooling water gradually heats up in the battery pack, and the cooling effect of the water inlet end on the battery cells is often higher than that of the water outlet end. Therefore, the existing new energy vehicle on-board battery water-cooling structure is not easy to cool the battery cells efficiently and evenly. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a water cooling mechanism for the on-board power supply of a new energy vehicle to solve the technical problem that the existing on-board battery water cooling structure of new energy vehicles is not easy to efficiently and evenly cool the battery cells.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooling mechanism for an on-board power supply of a new energy vehicle, comprising a shell, wherein a plurality of groups of battery cells are arranged at intervals in the shell, a reinforcement frame is fixedly connected to the inner wall of the shell, a water pipe is arranged in the reinforcement frame, a corrugated pipe with both ends connected to the water pipe is arranged between the battery cells along the length direction, the two ends of the corrugated pipe are respectively connected to the water pipes on both sides of the shell, a positioning frame for positioning the corrugated pipe is fixedly connected between the battery cells, and a thermal conductive filling layer covering the corrugated pipe is filled between the battery cells.

[0007] By adopting the above technical solution, a cooling pipe parallel to the battery cells is set in the battery pack, so that the cooling water can flow parallel to the battery cells during circulation, and the battery cells in the battery pack are evenly cooled, which effectively improves the heat exchange efficiency between the cooling water and the battery cells, so that the cooling structure can efficiently and evenly cool the battery pack.

[0008] The utility model is further configured that a flow valve and a one-way valve are respectively provided at both ends of the bellows.

[0009] By adopting the above technical solution, the flow rate of water flowing through the bellows is controlled by using the flow valves arranged at the ends of the bellows.

[0010] The utility model is further configured that the head and tail ends of the water pipe pass through one end of the shell and are respectively connected with a water inlet and a water outlet.

[0011] By adopting the above technical solution, a circulation pipeline of cooling water is connected through the water inlet and the water outlet.

[0012] The utility model is further configured that a booster pump is arranged at one end of the shell away from the water inlet and the water outlet, and both ends of the booster pump are connected to the water pipe.

[0013] By adopting the above technical solution, the booster pump provides additional pressure in the water pipe away from the water inlet, ensuring that the pressure of the cooling water at various locations in the water pipe tends to be balanced.

[0014] The utility model is further configured such that the water outlet of the water pipe is located at a side of the bellows provided with a one-way valve, and the water inlet of the water pipe is located at a side of the bellows provided with a flow valve.

[0015] By adopting the above technical solution, the cooling water flowing into the water pipe through the water inlet passes through the flow valve arranged at the end of each bellows, and then enters the bellows to generate heat exchange with the battery cell.

[0016] The utility model is further configured that reinforcing plates are arranged at intervals inside the reinforcing frame, and a hole for the water supply pipe to pass through is arranged at the center of the reinforcing plate.

[0017] By adopting the above technical solution, the reinforcing plate and the reinforcing frame can effectively improve the structural strength of the shell, and the water pipe is arranged inside the reinforcing frame.

[0018] The utility model is further configured such that the flow direction of water flowing through the booster pump is the same as the flow direction of water flowing through the bellows.

[0019] By adopting the above technical solution, the water pressure at the end of the water pipe far away from the water inlet can be increased by the operation of the booster pump, so that the water pressure in the water pipe tends to be balanced.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] 1. The utility model arranges cooling pipes parallel to the battery cells in the battery pack so that the cooling water can flow parallel to the battery cells during circulation, and cools the battery cells in the battery pack evenly. The water pipes between the battery cells are arranged in a bellows structure, and a support frame for supporting the water pipes is arranged between the battery cells and filled with thermal conductive silicone grease, which effectively improves the heat exchange efficiency between the cooling water and the battery cells, so that the cooling structure can efficiently and evenly cool the battery pack.

[0022] 2. The utility model respectively arranges a one-way valve and a flow valve at both ends of the bellows parallel to the battery cells. When the battery cells in a certain area of ​​the battery pack heat up rapidly, the cooling rate of the area can be increased by adjusting the flow of each flow valve. At the same time, the booster pump at the end of the water pipe away from the water inlet and the water outlet is turned on to fully deal with the temperature out of control of the battery pack and avoid the safety hazards that may be caused by the sudden temperature rise somewhere in the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is an internal stereogram of the utility model;

[0025] Figure 3 For the utility model Figure 2 A magnified view of middle;

[0026] Figure 4 It is a three-dimensional view of the interior of the utility model from another perspective;

[0027] Figure 5 For the utility model Figure 4 Enlarged view of middle B;

[0028] Figure 6 It is a three-dimensional diagram of the structure between the battery cells of the utility model;

[0029] Figure 7 For the utility model Figure 6 Enlarged view of C in the middle.

[0030] In the figure: 1. Shell; 2. Water pipe; 3. Water inlet; 4. Water outlet; 5. Reinforcement frame; 6. Reinforcement plate; 7. Flow valve; 8. Check valve; 9. Booster pump; 10. Battery cell; 11. Thermal conductive filling layer; 12. Bellows; 13. Positioning frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0032] The following describes an embodiment of the utility model based on its overall structure.

[0033] Embodiment 1

[0034] A water cooling mechanism for a new energy vehicle onboard power supply, such as Figure 1-7 As shown, it includes a shell 1, in which a plurality of groups of battery cells 10 are arranged at intervals. Specifically, the battery cells 10 are in a rectangular structure, and gaps for laying bellows 12 are left between adjacent battery cells 10. A reinforcing frame 5 is fixedly connected to the inner wall of the shell 1. Specifically, the reinforcing frame 5 is in a double-layer structure, and a water pipe 2 is laid in the reinforcing frame 5 with the double-layer structure. A bellows 12 with both ends connected to the water pipe 2 is arranged between the battery cells 10 along the length direction, and both ends of the bellows 12 are respectively connected to the water pipes 2 on both sides of the shell 1. A positioning frame 13 for positioning the bellows 12 is fixedly connected between the battery cells 10. A heat-conductive filling layer 11 covering the bellows 12 is filled between the battery cells 10. Both ends of the water pipe 2 pass through one end of the shell 1 and are respectively connected to a water inlet 3 and a water outlet 4. A circulating pipeline for cooling water is connected through the water inlet 3 and the water outlet 4.

[0035] See also Figure 2-6 , reinforcing plates 6 are arranged at intervals inside the reinforcing frame 5, and a hole for the water supply pipe 2 to pass through is arranged at the center of the reinforcing plate 6. The reinforcing plate 6 of the water pipe 2 and the reinforcing frame 5 can effectively improve the structural strength of the shell 1, and the water pipe 2 is arranged inside the reinforcing frame 5. The reinforcing frame 5 and the reinforcing plate 6 can also play a role in protecting the water pipe 2 at the same time, which can effectively prevent the water pipe 2 from being broken when the battery pack is hit, and further effectively prevent the inside of the battery pack from being soaked due to the rupture of the water pipe 2.

[0036] Embodiment 2

[0037] A water cooling mechanism for a new energy vehicle onboard power supply, such as Figure 1-7 As shown, on the basis of Example 1, the difference from Example 1 is that a flow valve 7 and a one-way valve 8 are respectively provided at both ends of the bellows 12. Specifically, the flow direction of the one-way valve 8 is from the inside of the bellows 12 to the inside of the water pipe 2, and the flow valve 7 is specifically a micro electric butterfly valve. The flow valve 7 provided at the end of each bellows 12 is used to control the water flow velocity flowing through the bellows 12. A booster pump 9 is provided at the end of the shell 1 away from the water inlet 3 and the water outlet 4. Both ends of the booster pump 9 are connected to the water pipe 2. The booster pump 9 works to provide additional pressure in the water pipe 2 away from the water inlet 3 to ensure that the pressure of the cooling water at various locations in the water pipe 2 tends to be balanced.

[0038] See also Figure 2-7The water outlet 4 of the water pipe 2 is located on the side of the bellows 12 where the one-way valve 8 is provided, and the water inlet 3 of the water pipe 2 is located on the side of the bellows 12 where the flow valve 7 is provided. The cooling water flows into the water pipe 2 through the water inlet 3, passes through the flow valve 7 provided at the end of each bellows 12, and then enters the bellows 12 to generate heat exchange with the battery cell 10. The flow direction of water flowing through the booster pump 9 is the same as that of water flowing through the bellows 12. The operation of the booster pump 9 can increase the water pressure at the end of the water pipe 2 away from the water inlet 3, so that the water pressure in the water pipe 2 tends to be balanced.

[0039] The working principle of the utility model is as follows: cooling water flows into the water pipe 2 through the water inlet 3, the cooling water flowing into the water pipe enters the interior of the bellows 12 after passing through the flow valves 7 of each bellows 12, the heat generated by the battery cell 10 is transferred to the water in the bellows 12 after passing through the heat-conducting medium in the heat-conducting filling layer 11, the water flowing through the bellows 12 finally passes through the one-way valve 8 and enters the water pipe 2 on the other side of the shell 1 and finally flows out from the water outlet 4. During the flow of water in the water pipe 2, the booster pump 9 can increase the water pressure in the end of the water pipe 2 away from the water inlet 3, thereby effectively maintaining the balance of water pressure at various locations in the water pipe 2.

[0040] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A water cooling mechanism for a new energy vehicle onboard power supply, comprising a housing (1), wherein a plurality of groups of battery cells (10) are arranged at intervals in the housing (1), characterized in that: The inner wall of the shell (1) is fixedly connected to a reinforcement frame (5), a water pipe (2) is arranged inside the reinforcement frame (5), a bellows (12) with both ends connected to the water pipe (2) is arranged between the battery cells (10) along the length direction, the two ends of the bellows (12) are respectively connected to the water pipes (2) on both sides of the shell (1), a positioning frame (13) for positioning the bellows (12) is fixedly connected between the battery cells (10), and a heat conductive filling layer (11) covering the bellows (12) is filled between the battery cells (10).

2. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 1 is characterized in that: A flow valve (7) and a one-way valve (8) are respectively provided at both ends of the bellows (12).

3. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 2 is characterized in that: The head and tail ends of the water pipe (2) pass through one end of the shell (1) and are respectively connected to a water inlet (3) and a water outlet (4).

4. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 3 is characterized in that: A booster pump (9) is provided inside the housing (1) at one end away from the water inlet (3) and the water outlet (4), and both ends of the booster pump (9) are connected to the water pipe (2).

5. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 3 is characterized in that: The water outlet (4) of the water pipe (2) is located on the side of the bellows (12) provided with a one-way valve (8), while the water inlet (3) of the water pipe (2) is located on the side of the bellows (12) provided with a flow valve (7).

6. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 1 is characterized in that: Reinforcement plates (6) are arranged at intervals inside the reinforcement frame (5), and a hole through which the water supply pipe (2) passes is arranged at the center of the reinforcement plate (6).

7. The water cooling mechanism for the on-board power supply of a new energy vehicle according to claim 4 is characterized in that: The flow direction of water flowing through the booster pump (9) is the same as the flow direction of water flowing through the bellows (12).

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