Split type battery thermal management system

Abstract

The utility model discloses a split type battery thermal management system which comprises a compression evaporation module, a condensation module, an expansion water tank, an exhaust tee joint, a water replenishing tee joint and a battery pack liquid cooling plate, the compression evaporation module is provided with a heat exchange connector and a circulation connector, and the condensation module is connected with the heat exchange connector in the compression evaporation module through a pipeline to form a complete heat exchange loop. One circulating interface on the compression evaporation module is sequentially connected with a battery pack liquid cooling plate, an exhaust tee joint and a water replenishing tee joint through pipelines and is connected with the other circulating interface on the compression evaporation module to form a complete loop, and two interfaces on the expansion water tank are respectively connected with the exhaust tee joint and the water replenishing tee joint through pipelines; a compression evaporation module and a condensation module in an original common integrated battery heat management system are split, and the condensation module is placed in a good environment, so that the capacity of a heat exchange system is improved, and meanwhile, the heat dissipation performance of the battery heat management system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery thermal management system, concretely relates to a split type battery thermal management system. BACKGROUND

[0002] At present, the application of battery is more and more extensive, and the main power source of electric agricultural machine is battery, and the working environment temperature of battery directly influences the endurance and life of battery, a large amount of heat is generated in the working process of battery, and the performance of battery is directly influenced when battery continuously works under high temperature, and explosion may be caused under extreme temperature and safety accident may be caused. Therefore, it is particularly important to keep the working temperature of battery appropriate.

[0003] And because the working environment of electric agricultural machine is poor, the heat exchange capacity of ordinary integrated battery thermal management system is reduced because the integrated battery thermal management system is integrated, the cooling cannot be effectively carried out, and the demand of actual working condition cannot be met. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art, the utility model provides a split type battery thermal management system, the compression evaporation module and the condensation module in the original ordinary integrated battery thermal management system are split, the condensation module is placed in a good environment, the heat exchange capacity of battery thermal management system is improved, the heat exchange effect on battery is improved, and the battery can work normally.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme that a split type battery thermal management system, comprising: compression evaporation module, condensation module, expansion tank, exhaust tee, water supplement tee, battery pack liquid cooling plate, the heat exchange interface and the circulation interface are equipped on the compression evaporation module, the condensation module is connected with the heat exchange interface on the compression evaporation module through pipeline, forms complete heat exchange loop, one of the circulation interfaces on the compression evaporation module is connected with the battery pack liquid cooling plate, the exhaust tee, the water supplement tee and the other circulation interface on the compression evaporation module through pipeline in proper order, forms complete loop, and the two interfaces on the expansion tank are connected with the exhaust tee and the water supplement tee through pipeline respectively.

[0006] Further, it further includes: drain tee, drain valve, the drain tee is arranged on the pipeline between the battery pack liquid cooling plate and the exhaust tee, and the drain tee is connected with the drain valve through pipeline.

[0007] Further, it further includes: regulating valve, and the regulating valve is arranged on the pipeline between the exhaust tee and the water supplement tee.

[0008] Further, it further includes: high-pressure filling valve, and the high-pressure filling valve is arranged on the pipeline between the compression evaporation module and the condensation module.

[0009] Further, the pipeline between the compression evaporation module, the expansion water tank, the exhaust tee, the water supplement tee and the battery pack liquid cooling plate is a rubber hose.

[0010] Further, the pipe diameter of the pipeline from the exhaust tee to the expansion water tank is smaller than the pipe diameter of the pipeline from the water supplement tee to the expansion water tank.

[0011] Further, the height from the liquid level of the expansion water tank to the water inlet of the water pump in the compression evaporation module is greater than or equal to 500 mm.

[0012] The utility model discloses the beneficial effect is: split the compression evaporation module and condensing module in the original ordinary integrated battery heat management system, divide into two modules, are compression evaporation module and condensing module respectively, place the condensing module in good environment, improve heat exchange efficiency and speed, and then promote the ability of heat exchange system, improve the heat exchange effect to battery, make battery can work normally. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is system distribution structure schematic diagram of the utility model;

[0014] Fig. 2 It is system principle structure schematic diagram of the utility model;

[0015] In the drawing: 1, compression evaporation module;2, condensing module;3, expansion water tank;4, exhaust tee;5, water supplement tee;6, battery pack liquid cooling plate;7, drain tee;8, drain valve;9, regulating valve;10, high-pressure filling valve. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, below through the drawing and example, to the utility model carries out further detailed description.But it should be understood, the specific embodiment described here is only used to explain the utility model, and is not used to limit the scope of the utility model.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

[0018] As Figs. 1-2As shown, a split type battery thermal management system comprises: a compression and evaporation module 1, a condensation module 2, an expansion tank 3, an exhaust tee 4, a water supplement tee 5, a battery pack liquid cooling plate 6; the compression and evaporation module 1 is provided with a heat exchange interface and a circulation interface, the condensation module 2 is connected with the heat exchange interface on the compression and evaporation module 1 through a pipeline to form a complete heat exchange loop, one of the circulation interfaces on the compression and evaporation module 1 is connected with the battery pack liquid cooling plate 6, the exhaust tee 4, the water supplement tee 5 and the other circulation interface on the compression and evaporation module 1 through pipelines in sequence to form a complete loop, and the two interfaces on the expansion tank 3 are connected with the exhaust tee 4 and the water supplement tee 5 through pipelines respectively.

[0019] The battery pack liquid cooling plate 6 is arranged in the battery pack to dissipate heat for the batteries in the battery pack.

[0020] The split type battery thermal management system further comprises: a drainage tee 7 and a drainage valve 8, the drainage tee 7 is arranged on the pipeline between the battery pack liquid cooling plate 6 and the exhaust tee 4, and the drainage tee 7 is connected with the drainage valve 8 through a pipeline.

[0021] The split type battery thermal management system further comprises: a regulating valve 9, which is arranged on the pipeline between the exhaust tee 4 and the water supplement tee 5.

[0022] The split type battery thermal management system further comprises: a high-pressure charging valve 10, which is arranged on the pipeline between the compression and evaporation module 1 and the condensation module 2.

[0023] The pipelines between the compression and evaporation module 1, the expansion tank 3, the exhaust tee 4, the water supplement tee 5 and the battery pack liquid cooling plate 6 are rubber hoses.

[0024] The pipe diameter of the pipeline from the exhaust tee 4 to the expansion tank 3 is smaller than the pipe diameter of the pipeline from the water supplement tee 5 to the expansion tank 3.

[0025] The height of the liquid level of the expansion tank 3 to the water inlet of the water pump in the compression and evaporation module 1 is greater than or equal to 500 mm.

[0026] The compression and evaporation module 1 comprises:

[0027] The condensation module 2 comprises: a condensation shell, an evaporator and a fan, the evaporator and the fan are installed on the condensation shell, the heat exchange effect of the evaporator is accelerated by the fan, and the inlet and outlet of the evaporator are connected with the compression and evaporation module 1 through a pipeline.

[0028] The compression and evaporation module 1 comprises: a compression and evaporation shell, an electric compressor, a low-pressure charging valve, a plate heat exchanger, a thermal expansion valve, a dry liquid accumulator, a water pump, a water inlet temperature sensor, a PTC, a water outlet temperature sensor,

[0029] The electric compressor, the low-pressure charging valve, the plate heat exchanger, the thermal expansion valve, the dry liquid storage, the water pump, the inlet water temperature sensor, the PTC and the outlet water temperature sensor are arranged inside the compression and evaporation shell body, the heat exchange interface in the electric compressor, the low-pressure charging valve and the plate heat exchanger, the thermal expansion valve and the dry liquid storage are connected in series through pipelines, and then the complete circuit is formed with the compression and evaporation module 1, the refrigerant of the battery pack is heat exchanged through the plate heat exchanger, the inlet water temperature sensor, the water pump, the circulating interface of the plate heat exchanger, the PTC and the outlet water temperature sensor are connected in series through the pipelines, and then the circuit is formed with the battery pack liquid cooling plate 6, the refrigerant is circulated through the water pump, the refrigerant in the two circuits is heat exchanged through the plate heat exchanger, and then the battery pack liquid cooling plate 6 is cooled.

[0030] A three-state pressure switch is further arranged on the pipeline between the evaporator and the electric compressor.

[0031] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A split battery thermal management system, characterized by, Comprise: A compression evaporation module, a condensation module, an expansion tank, an exhaust tee, a water replenishment tee, a battery pack liquid cooling plate; The compression evaporation module is provided with a heat exchange interface and a circulation interface, the condensation module is connected with the heat exchange interface on the compression evaporation module through a pipeline, to form a complete heat exchange loop, one of the circulation interfaces on the compression evaporation module is connected with the battery pack liquid cooling plate, the exhaust tee, the water replenishment tee and the other circulation interface on the compression evaporation module through a pipeline in sequence, to form a complete loop, and the two interfaces on the expansion tank are connected with the exhaust tee and the water replenishment tee through pipelines respectively.

2. The split battery thermal management system of claim 1, wherein, Also comprise: A drainage tee and a drainage valve, the drainage tee is arranged on the pipeline between the battery pack liquid cooling plate and the exhaust tee, and the drainage tee is connected with the drainage valve through a pipeline.

3. The split battery thermal management system of claim 1, wherein, Also comprise: A regulating valve, which is arranged on the pipeline between the exhaust tee and the water replenishment tee.

4. The split battery thermal management system of claim 1, wherein, Also comprise: A high-pressure filling valve, which is arranged on the pipeline between the compression evaporation module and the condensation module.

5. The split battery thermal management system of claim 1, wherein, The pipeline between the compression evaporation module, the expansion tank, the exhaust tee, the water replenishment tee and the battery pack liquid cooling plate is a rubber hose.

6. The split battery thermal management system of claim 1, wherein, The pipe diameter of the pipeline from the exhaust tee to the expansion tank is smaller than the pipe diameter of the pipeline from the water replenishment tee to the expansion tank.

7. The split battery thermal management system of claim 1, wherein, The height from the liquid level of the expansion tank to the water inlet of the water pump in the compression evaporation module is greater than or equal to 500 mm.

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