Battery heat dissipation system

Abstract

The utility model relates to a battery heat dissipation system, and belongs to the technical field of port hoisting equipment. Comprising an expansion water tank, a battery pack, a BTMS, a heat dissipation pipeline, a water supplementing pipe, a ventilation pipe, a water inlet steel pipe and a water outlet steel pipe, the expansion water tank is located at the highest position of the whole heat dissipation system, the BTMS is higher than the battery pack, the heat dissipation pipeline is arranged around the battery pack, the water inlet steel pipe and the water outlet steel pipe are arranged at the BTMS, the expansion water tank is connected with the water supplementing pipe and the ventilation pipe, and the water supplementing pipe is connected with the water inlet steel pipe. And the bottoms of the water inlet steel pipe and the water outlet steel pipe are respectively connected with a radiating pipeline. The utility model has the beneficial effects that an exhaust switch is omitted, so that the production cost is reduced, and the complexity of assembly operation is reduced; and when the cooling liquid is replaced, extra exhaust operation is not needed, so that the convenience of maintenance is improved.

Description

Technical Field

[0001] The utility model relates to a battery heat dissipation system, belonging to the technical field of port lifting equipment. Background Art

[0002] With the gradual maturity of the "three electrics" technology, which brings about the continuous reduction of the manufacturing cost of electrified products, electrification has become one of the important directions for the green development of construction machinery. As the main power source of electric products, the battery needs to dissipate heat during the charging and discharging process. Therefore, a battery heat dissipation system must be installed in pure electric products. The purpose of this patent is to cancel the exhaust operation after system installation, reduce assembly complexity, and provide convenience for later maintenance.

[0003] Currently, the commonly used battery heat dissipation system mainly includes an expansion tank, a battery pack, a thermal management unit (BTMS), heat dissipation pipelines, a make-up water pipe, and two ventilation pipes. According to the height of the BTMS layout position, there are two schemes: Scheme 1: Height position: expansion tank > battery pack > BTMS. The BTMS is located at the lowest position of the system, the ventilation pipe is arranged at the highest point of the battery pack heat dissipation branch, and the water replenishing port and the ventilation pipe are higher than the BTMS inlet and outlet. When the coolant is initially filled, affected by gravity, the BTMS inlet and outlet will be filled with coolant. At this time, the BTMS water pump can operate normally, and the air in the pipeline is squeezed into the ventilation pipe through the water flow to realize the circulation of the system. Scheme 2: Height position: expansion tank > BTMS > battery pack. The BTMS is located at the highest point of the system pipeline, the ventilation pipe is arranged at the highest point of the battery pack heat dissipation branch, and the water replenishing port and the ventilation pipe are lower than the BTMS inlet and outlet. During the process of filling the coolant, as the liquid level gradually rises, the air in the branch is discharged through the ventilation pipe. When the liquid level is higher than the ventilation pipe interface, the air in the pipe cannot be discharged, so it will accumulate at the BTMS inlet and outlet, resulting in the inability of the water pump to operate. Scheme 1: Since the BTMS is located at the bottom of the vehicle, close to the ground dust area, it is easy to adsorb ground dust, and it is easy to cause the internal sensor to short-circuit and malfunction information to appear in case of water. Scheme 2: There is air at the water pump inlet and it cannot operate normally. An exhaust switch needs to be installed in front of the BTMS water inlet to remove the air at the water pump inlet, which increases the complexity of the assembly operation; every time the coolant is replaced, an exhaust operation is required, which increases the inconvenience of maintenance. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a battery heat dissipation system, which cancels the exhaust switch, reduces the production cost, and reduces the complexity of assembly operations; no additional exhaust operation is required when replacing the coolant, which improves the convenience of maintenance.

[0005] The present utility model is achieved through the following technical solutions: A battery heat dissipation system includes an expansion water tank, a battery pack, a BTMS, heat dissipation pipelines, a makeup water pipe, a vent pipe, an inlet steel pipe, and an outlet steel pipe. The expansion water tank is located at the highest position of the entire heat dissipation system. The BTMS is higher than the battery pack. The heat dissipation pipelines are arranged around the battery pack. The inlet steel pipe and the outlet steel pipe are provided at the BTMS. The expansion water tank is connected to the makeup water pipe and the vent pipe. The makeup water pipe is connected to the inlet steel pipe. The vent pipe is connected to the outlet steel pipe. The bottoms of the inlet steel pipe and the outlet steel pipe are respectively connected to the heat dissipation pipelines.

[0006] An auxiliary vent joint, a BTMS water inlet joint, and a makeup water pipe joint are provided on the inlet steel pipe. The water inlet of the BTMS is horizontal with the BTMS water inlet joint on the inlet steel pipe and is connected by a rubber hose. The auxiliary vent joint is located above the BTMS water inlet joint. The auxiliary vent joint is connected to an auxiliary vent pipe. The makeup water pipe joint is located below the BTMS water inlet joint and is connected to the makeup water pipe.

[0007] A vent joint and a BTMS water outlet joint are provided on the outlet steel pipe. The vent joint is located above the BTMS water outlet joint. The vent joint is connected to the vent pipe. The BTMS water outlet joint is horizontal with the water outlet of the BTMS and is connected by a rubber hose.

[0008] The expansion water tank participates in the circulation of the heat dissipation system through the makeup water pipe and the vent pipe.

[0009] The coolant filled in the expansion water tank enters the heat dissipation pipelines through the makeup water pipe and the inlet steel pipe.

[0010] The beneficial effects of the present utility model are as follows: The exhaust switch is cancelled, reducing the production cost and the complexity of the assembly operation; no additional exhaust operation is required when replacing the coolant, improving the convenience of maintenance. Description of the Drawings

[0011] The present utility model will be further described below with reference to the drawings and embodiments.

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the inlet steel pipe of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the outlet steel pipe of the present utility model.

[0015] In the figure: 1. Expansion water tank; 2. BTMS; 3. Heat dissipation pipelines; 4. Makeup water pipe; 5. Vent pipe; 6. Inlet steel pipe; 7. Outlet steel pipe; 8. Auxiliary vent joint; 9. BTMS water inlet joint; 10. Makeup water pipe joint; 11. Vent joint; 12. BTMS water outlet joint; 13. Auxiliary vent pipe. Detailed implementation manners

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0018] As Figure 1 shown, a battery heat dissipation system includes an expansion tank 1, a battery pack, a BTMS 2, a heat dissipation pipeline 3, a make-up water pipe 4, a ventilation pipe 5, an inlet steel pipe 6, and an outlet steel pipe 7. The expansion tank 1 is located at the highest position of the entire heat dissipation system. The BTMS 2 is higher than the battery pack. The heat dissipation pipeline 3 is arranged around the battery pack. The inlet steel pipe 6 and the outlet steel pipe 7 are provided at the BTMS 2. The expansion tank 1 is connected to the make-up water pipe 4 and the ventilation pipe 5. The make-up water pipe 4 is connected to the inlet steel pipe 6. The ventilation pipe 5 is connected to the outlet steel pipe 7. The bottoms of the inlet steel pipe 6 and the outlet steel pipe 7 are respectively connected to the heat dissipation pipeline 3. The BTMS is a heat management unit.

[0019] As Figure 2 shown, an auxiliary ventilation joint 8, a BTMS water inlet joint 9, and a make-up water pipe joint 10 are provided on the inlet steel pipe 6. The water inlet of the BTMS 2 is horizontal with the BTMS water inlet joint 9 on the inlet steel pipe 6 and is connected by a rubber hose. The auxiliary ventilation joint 8 is located above the BTMS water inlet joint 9, and the auxiliary ventilation joint 8 is connected to an auxiliary ventilation pipe 13. The make-up water pipe joint 10 is located below the BTMS water inlet joint 9 and is connected to the make-up water pipe 4.

[0020] As Figure 3 shown, an air vent joint 11 and a BTMS water outlet joint 12 are provided on the water outlet steel pipe 7. The air vent joint 11 is located above the BTMS water outlet joint 12, and the air vent joint 11 is connected to the air vent pipe 5; the BTMS water outlet joint 12 is horizontal with the water outlet of the BTMS and is connected by a rubber hose.

[0021] The expansion tank 1 participates in the heat dissipation system cycle through the make-up water pipe 4 and the air vent pipe 5.

[0022] The coolant filled in the expansion tank 1 enters the heat dissipation pipeline 3 through the make-up water pipe 4 and the water inlet steel pipe 6. The air in the heat dissipation pipeline 3 slowly enters the expansion tank 1 through the water outlet steel pipe 7 and the air vent pipe 5 as the coolant is filled. After the coolant level exceeds the BTMS water inlet and the BTMS water outlet, the air remaining in the water inlet steel pipe 6 is discharged through the auxiliary air vent pipe 13. When the coolant flows out of the auxiliary air vent pipe 13, the switch on the auxiliary air vent pipe 13 is closed. At this time, it means that the coolant filling is completed. Since the water inlet steel pipe 6 is connected to the BTMS water inlet and there is no air residue, there is no need to perform the exhaust operation again, and the water pump can operate successfully.

[0023] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery cooling system, characterized in that: The heat dissipation system comprises an expansion water tank (1), a battery pack, a BTMS (2), a heat dissipation pipeline (3), a water supply pipe (4), a vent pipe (5), a water inlet steel pipe (6) and a water outlet steel pipe (7). The expansion water tank (1) is located at the highest point of the entire heat dissipation system, the BTMS (2) is higher than the battery pack, the heat dissipation pipeline (3) is arranged around the battery pack, the BTMS (2) is provided with a water inlet steel pipe (6) and a water outlet steel pipe (7), the expansion water tank (1) is connected to the water supply pipe (4) and the vent pipe (5), the water supply pipe (4) is connected to the water inlet steel pipe (6), the vent pipe (5) is connected to the water outlet steel pipe (7), and the bottoms of the water inlet steel pipe (6) and the water outlet steel pipe (7) are respectively connected to the heat dissipation pipeline (3).

2. A battery cooling system according to claim 1, characterized in that: The water inlet steel pipe (6) is provided with an auxiliary ventilation joint (8), a BTMS water inlet joint (9) and a water supply pipe joint (10); the water inlet of the BTMS (2) is horizontal with the BTMS water inlet joint (9) on the water inlet steel pipe (6) and is connected via a rubber hose; the auxiliary ventilation joint (8) is located above the BTMS water inlet joint (9), and the auxiliary ventilation joint (8) is connected to the auxiliary ventilation pipe (13); the water supply pipe joint (10) is located below the BTMS water inlet joint (9) and is connected to the water supply pipe (4).

3. A battery cooling system according to claim 1, characterized in that: The water outlet steel pipe (7) is provided with a vent joint (11) and a BTMS water outlet joint (12); the vent joint (11) is located above the BTMS water outlet joint (12); the vent joint (11) is connected to the vent pipe (5); and the BTMS water outlet joint (12) is horizontally connected to the water outlet of the BTMS via a rubber hose.

4. A battery cooling system according to claim 1, characterized in that: The expansion water tank (1) participates in the heat dissipation system circulation through the water supply pipe (4) and the ventilation pipe (5).

5. A battery cooling system according to claim 1, characterized in that: The coolant filled in the expansion water tank (1) enters the heat dissipation pipeline (3) through the water supply pipe (4) and the water inlet steel pipe (6).

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