DCDC heat dissipation system of mine car

Abstract

The invention discloses a mine car DCDC heat dissipation system which comprises a power module, a boosting module, a radiator, a water pump, an expansion water tank and a connecting water pipe, and the radiator, the power module, the boosting module and the water pump form a waterway circulation system; connecting water pipes of the power module and the boosting module are connected in parallel; the parallel connection water pipes of the power module and the boosting module are gathered to a water outlet pipe to be connected with a water inlet of the radiator; cold water cooled by the radiator is distributed to the power module and the boosting module in a parallel connection mode under the action of the water pump; the expansion tank is connected with the radiator through a connecting water pipe. The problem that protection and the service life of a DC cabinet of an existing mine car are affected by the working environment of the mine car is solved.

Description

Technical Field

[0001] The invention belongs to the field of vehicle cooling systems, and in particular relates to a DCDC cooling system for a mining vehicle. Background Art

[0002] At present, hydrogen fuel cells and lithium batteries are generally 540V voltage platforms, while for high-power hydrogen mining cars, their drive motors are generally 1650V voltage platforms. In order to meet the voltage requirements of the mining cars, a boost DCDC device needs to be added between the power system and the drive system. Generally, the cooling method of the DCDC module is air cooling. The volume of a single module is large, resulting in a large volume of the DC cabinet, which affects the layout of the entire vehicle; on the other hand, ventilation holes need to be set around the DC cabinet to ensure ventilation and heat dissipation of the air cooling system. For mining cars with more complex operating conditions, a large amount of dust or rainwater will enter the DC cabinet through the ventilation holes, causing the DC cabinet to fail to meet the protection level requirements and affect the service life of the DC cabinet. On the other hand, the DCDC module of the fuel cell generally adopts a water cooling system, and cannot share the cooling system with the air-cooled boost DCDC. Summary of the invention

[0003] Aiming at the problem that the protection and life of the DC cabinet of the existing mine car will be affected by the working environment of the mine car, the present invention provides a DCDC heat dissipation system for the mine car.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A DCDC cooling system for a mining vehicle comprises a power module, a boost module, a radiator, a water pump, an expansion water tank and a connecting water pipe.

[0006] The radiator, power module, boost module and water pump form a water circulation system;

[0007] The connecting water pipes of the power module and the boost module are connected in parallel;

[0008] The parallel connection water pipes of the power module and the boost module are gathered into one water outlet pipe connected to the water inlet of the radiator;

[0009] The cold water cooled by the radiator is distributed to the power module and the boost module in parallel under the action of the water pump;

[0010] The expansion tank is connected to the radiator through a connecting water pipe.

[0011] Further, the power module includes three fuel DCDC modules.

[0012] Furthermore, the boost module is arranged inside the boost device, and the boost module includes six boost DCDC modules.

[0013] Furthermore, each boost DCDC module is provided with a water cooling plate.

[0014] Furthermore, the water inlet pipes and the water outlet pipes of the three fuel DCDC modules and the six boost DCDC modules are connected in parallel.

[0015] Furthermore, the diameters of the inlet and outlet water pipes of the boost DCDC module and the inlet and outlet water pipes of the fuel DCDC module are different.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The boost DCDC module is changed from air cooling to water cooling, and the fan inside the DC cabinet and the ventilation holes around it are eliminated, which not only reduces the size of the DC cabinet but also improves the protection level and extends the product life;

[0018] The boost DCDC and fuel cell DCDC can share a water cooling system to save costs;

[0019] The water inlet and outlet pipes of the boost DCDC and fuel cell DCDC are connected in parallel to ensure that the inlet and outlet water temperatures of each DCDC are consistent;

[0020] Since the internal flow resistance and flow requirements of the 6 boost DCDCs and 3 fuel-electric DCDCs are different, differentiated pipe diameter designs are adopted to ensure their respective flow requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is an overall structural block diagram of a DCDC cooling system for a mining vehicle in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0023] like Figure 1 As shown, this embodiment provides a DCDC cooling system for a mining vehicle, including a power module, a boost module, a radiator, a water pump, an expansion water tank and a connecting water pipe.

[0024] The radiator, power module, boost module and water pump form a water circulation system;

[0025] The connecting water pipes of the power module and the boost module are connected in parallel;

[0026] The parallel connecting water pipes of the power module and the boost module are gathered into one water outlet pipe connected to the water inlet of the radiator; the hot water is brought into the radiator.

[0027] The cold water cooled by the radiator is distributed to the power module and the boost module in parallel under the action of the water pump;

[0028] The expansion tank is connected to the radiator through a connecting water pipe. Its main function is to accommodate the water expansion of the closed-loop water cooling system and also serves as a filling port to replenish water for the system.

[0029] Further, the power module includes three fuel DCDC modules.

[0030] Furthermore, the boost module is arranged inside the boost device, and the boost module includes six boost DCDC modules.

[0031] Furthermore, each boost DCDC module is provided with a water cooling plate.

[0032] Furthermore, the water inlet and outlet pipes of the three fuel DCDC modules and the six boost DCDC modules are connected in parallel to ensure that the inlet and outlet water temperatures of the modules are consistent. The cold water cooled by the radiator is distributed to the nine DCDC modules in parallel under the action of the water pump to dissipate the heat of the DCDC modules, thus realizing a closed-loop water cooling system.

[0033] Furthermore, the diameters of the inlet and outlet water pipes of the boost DCDC module and the inlet and outlet water pipes of the fuel DCDC module are different. Since the internal flow resistance and flow requirements of the 6 boost DCDCs and 3 fuel-electric DCDCs are different, a differentiated pipe diameter design is adopted to ensure their respective flow requirements.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The boost DCDC module is changed from air cooling to water cooling, and the fan inside the DC cabinet and the ventilation holes around it are eliminated, which not only reduces the size of the DC cabinet but also improves the protection level and extends the product life;

[0036] The boost DCDC and fuel cell DCDC can share a water cooling system to save costs;

[0037] The water inlet and outlet pipes of the boost DCDC and fuel cell DCDC are connected in parallel to ensure that the inlet and outlet water temperatures of each DCDC are consistent;

[0038] Since the internal flow resistance and flow requirements of the 6 boost DCDCs and 3 fuel-electric DCDCs are different, differentiated pipe diameter designs are adopted to ensure their respective flow requirements.

[0039] The above is a detailed introduction to a mine car DCDC cooling system provided by the present application. The description of the specific embodiment is only used to help understand the method and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A DCDC cooling system for a mine car, characterized in that: Including power module, boost module, radiator, water pump, expansion tank and connecting water pipes, The radiator, power module, boost module and water pump form a water circulation system; The connecting water pipes of the power module and the boost module are connected in parallel; The parallel connection water pipes of the power module and the boost module are gathered into one water outlet pipe connected to the water inlet of the radiator; The cold water cooled by the radiator is distributed to the power module and the boost module in parallel under the action of the water pump; The expansion tank is connected to the radiator through a connecting water pipe.

2. A mining vehicle DCDC cooling system according to claim 1, characterized in that: The power module includes three fuel DCDC modules.

3. A mining car DCDC cooling system according to claim 2, characterized in that: The boost module is arranged inside the boost device, and the boost module includes six boost DCDC modules.

4. A mine car DCDC cooling system according to claim 3, characterized in that: Each boost DCDC module is equipped with a water cooling plate.

5. A mining vehicle DCDC cooling system according to claim 4, characterized in that: The water inlet pipes and the water outlet pipes of the three fuel DCDC modules and the six boost DCDC modules are connected in parallel.

6. A mining vehicle DCDC cooling system according to claim 5, characterized in that: The diameters of the boost DCDC module's inlet and outlet water pipes are different from those of the fuel DCDC module's inlet and outlet water pipes.

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