CN211789368U

CN211789368U - Vehicle-mounted battery cooling device

Info

Publication number: CN211789368U
Application number: CN202020274740.5U
Authority: CN
Inventors: 马勇; 陈剑波; 罗宝兵
Original assignee: Shanghai Ouxing Air Conditioner Science & Technology Co ltd
Current assignee: Shanghai Ouxing Air Conditioner Science & Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-10-27
Anticipated expiration: 2030-03-09

Abstract

The utility model relates to a vehicle-mounted battery cooling device, wherein a chassis is arranged at the inner bottom of a machine set frame, and a compressor, a water pump, a water storage tank, a first heat exchanger and a second heat exchanger are directly fixed on the chassis; the electric heating device is fixed at the bottom of the side surface of the water storage tank through a flange, and the upper part of the water storage tank is provided with a liquid feeding port; a liquid level meter is arranged on the side surface; a liquid level switch is arranged in the tank; the cooling fan is fixed on a top plate at the upper part of the first heat exchanger, and a circular flange opening is arranged on the top plate and is connected with a ventilation pipeline in the vehicle; the control panel is arranged on the upright post at the front side of the machine set frame; the compressor, the first heat exchanger, the second heat exchanger, the low-temperature expansion valve, the high-temperature expansion valve, the low-temperature electromagnetic valve, the high-temperature electromagnetic valve and the like are connected through copper pipelines to form a refrigerating system; the water inlet and outlet, the water pump and the second heat exchanger are connected through pipelines to form a water circulation system. The utility model discloses compact structure, change and maintain convenient, the liquid that provides, a large amount of heats that make on-vehicle battery produce in the work are in time got rid of, guarantee the best charge-discharge efficiency of battery.

Description

Vehicle-mounted battery cooling device

Technical Field

The utility model relates to a vehicle-mounted battery cooling device. Belong to new forms of energy battery liquid cooling technical field.

Background

With the exhaustion of traditional energy sources such as fossil fuel, in recent years, the understanding of China in terms of coping with climate change, guaranteeing energy safety, reducing greenhouse gas emission, preventing and treating urban air pollution and the like is gradually strengthened, and new energy automobiles become important emerging industries which encourage development of the country. The mobile charging power supply vehicle is a mobile 'charger baby' for meeting the requirement of emergency charging of a new energy automobile. As is known, the charging and discharging process of a battery is an electrochemical process between positive and negative ions, a large amount of heat is generated in the process, and if the heat cannot be discharged in time, the local temperature inside a battery cell is increased too fast, so that the safety of the battery is seriously affected. The battery liquid cooling technology takes away internal heat through continuous circulation of cooling liquid in the battery. At present, no vehicle-mounted battery cooling device specially developed for a mobile charging vehicle exists in the market.

Disclosure of Invention

The utility model discloses an on-vehicle battery cooling device, to in the new energy automobile market of rapid development day by day, remove the design of the automobile-used battery constant temperature liquid cooling requirement that charges to satisfy on-vehicle battery at-20 ~ 45 ℃ ambient temperature within range, provide constant temperature's liquid, make a large amount of heats that on-vehicle battery produced in charging process in time get rid of, with the best charge-discharge efficiency of assurance battery, fill the market vacancy that brings because new energy technology at present.

The utility model discloses technical scheme realizes like this:

a vehicle-mounted battery cooling device mainly comprises a compressor, a control panel, a cooling fan, a water pump, a water inlet, a water outlet, a drain valve, a water storage tank, an electric heating device, a first heat exchanger, a second heat exchanger, a low-temperature expansion valve, a high-temperature expansion valve, a low-temperature electromagnetic valve, a high-temperature electromagnetic valve, a door panel switch, a quick plug, a chassis, a unit frame and the like; a chassis is arranged at the bottom in the unit frame, and the compressor, the water pump, the water storage tank, the first heat exchanger and the second heat exchanger are directly fixed on the chassis; the electric heating device is fixed at the bottom of the side surface of the water storage tank through a flange, a liquid filling port is arranged at the upper part of the water storage tank, so that liquid can be conveniently filled into the system and air in the system can be conveniently removed, a liquid level meter is arranged on the side surface of the water storage tank, so that the liquid level in the water storage tank can be conveniently observed, and a liquid level switch is arranged in the water storage tank to prevent the electric heating overheating dry burning caused by too; the cooling fan is fixed on a top plate at the upper part of the first heat exchanger, and a circular flange opening is arranged on the top plate and is conveniently connected with a ventilation pipeline in the vehicle; the control panel is arranged on the upright post at the front side of the machine set frame; the compressor, the first heat exchanger, the second heat exchanger, the low-temperature expansion valve, the high-temperature expansion valve, the low-temperature electromagnetic valve, the high-temperature electromagnetic valve and the like are connected together through copper pipelines to form a refrigerating system, refrigerant liquid flows out of the first heat exchanger and then is divided into two paths to be connected in parallel with the high-temperature electromagnetic valve, the high-temperature expansion valve, the low-temperature electromagnetic valve and the low-temperature expansion valve respectively, and then is connected with the second heat exchanger through; the water inlet and outlet, the water pump and the second heat exchanger are connected together through a pipeline to form a water circulation system; the water inlet and the water outlet are divided into two groups and simultaneously respectively carry out temperature regulation on the two batteries; a water drain valve is arranged at the bottom of the water pipeline; the quick plug is installed on the upright column on the right side of the unit frame, so that the unit can be conveniently and quickly electrically connected and replaced on a vehicle.

The refrigerating system is respectively provided with a high-temperature electromagnetic valve, a high-temperature expansion valve, a low-temperature electromagnetic valve and a low-temperature expansion valve, can adapt to running under different environmental temperature conditions, and the system selects the high-temperature or low-temperature electromagnetic valve to be opened through program control.

A pressing door switch is installed on a front side upright post of the unit frame, so that the cooling fan can be prevented from running when the panel is opened, and the system reliability is improved.

The water storage tank has the functions of supplementing cooling liquid, exhausting air, displaying liquid level, alarming liquid level and the like.

The utility model has the advantages of compact structure, light in weight, energy regulation performance are good, change maintain convenient, operating temperature wide range, reliability height. The liquid with constant temperature is provided within the ambient temperature range of-20-45 ℃ of the vehicle-mounted battery, so that a large amount of heat generated by the vehicle-mounted battery in the charging and discharging process is timely discharged, the optimal charging and discharging efficiency of the battery is ensured, and the market vacancy brought by the new energy technology at present is filled.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of FIG. 1, rotated 90 degrees to the left after the cooling fan is disassembled;

fig. 3 is a schematic diagram of the cooling cycle of the present invention.

1. Cooling blower, 2, circular flange mouth, 3, roof, 4, inlet outlet, 5, electric heater unit, 6, control panel, 7, drain valve, 8, second heat exchanger, 9, front side stand, 10, door plant switch, 11, water pump, 12, chassis, 13, compressor, 14, unit frame, 15, quick plug, 16, high temperature expansion valve, 17, low temperature expansion valve, 18, high temperature solenoid valve, 19, low temperature solenoid valve, 20, first heat exchanger, 21, water storage box, 22, level gauge.

Detailed Description

The present invention is described in detail below with reference to the attached drawings and embodiments, but the present invention is not limited to the embodiments, and all similar structures and similar variations thereof that adopt the present invention are included in the scope of the claims of the present invention.

As shown in fig. 1 and 2, the vehicle-mounted battery cooling device comprises a compressor 13, a control panel 6, a cooling fan 1, a water pump 11, a water inlet and outlet 4, a drain valve 7, a water storage tank 21, an electric heating device 5, a first heat exchanger 20, a second heat exchanger 8, a low-temperature expansion valve 17, a high-temperature expansion valve 16, a low-temperature electromagnetic valve 19, a high-temperature electromagnetic valve 18, a door panel switch 10, a quick plug 15, a chassis 12, a unit frame 14 and the like.

The compressor 13, the water pump 11, the water storage tank 21, the first heat exchanger 20 and the second heat exchanger 8 are directly fixed on the chassis 12; the electric heating device 5 is fixed at the bottom of the side surface of the water storage tank 21 through a flange, a liquid filling port is arranged at the upper part of the water storage tank 21, so that liquid can be conveniently filled into the system and air in the system can be conveniently removed, the liquid level meter 22 is arranged on the side surface of the water storage tank 21, so that the liquid level in the water storage tank can be conveniently observed, and the liquid level switch is arranged in the water storage tank to prevent the electric heating device 5 from being overheated and dried due to too; the cooling fan 1 is fixed on a top plate 3 at the upper part of the first heat exchanger 20, and a circular flange port 2 is arranged on the top plate and is conveniently connected with a ventilation pipeline in the vehicle; the control panel 6 is arranged on the front side upright post 9 of the unit frame 14; the door panel switch 10 is arranged on the front side upright post 9 of the unit frame 14 to prevent the front panel from being opened when the unit runs; the compressor 13, the first heat exchanger 20, the second heat exchanger 8, the low-temperature expansion valve 17, the high-temperature expansion valve 16, the low-temperature electromagnetic valve 19, the high-temperature electromagnetic valve 18 and the like are connected together through copper pipelines to form a refrigeration system; the water inlet and outlet 4, the water pump 11 and the second heat exchanger 8 are connected together through pipelines to form a water circulation system; the water inlet and outlet 4 can be divided into two groups to respectively adjust the temperature of the two batteries at the same time. The bottom of the water pipeline is provided with a drain valve 7. The quick connector 15 mounted on the right side post of the unit frame 14 of fig. 2 facilitates quick electrical connection and replacement of the unit on the vehicle.

As shown in fig. 3, when the cooling unit is operated, the compressor 13 compresses a low-pressure refrigerant sucked therein into a high-temperature high-pressure gas, and then the high-temperature high-pressure gas flows into the first heat exchanger 20. The cooling fan 1 condenses the high-temperature and high-pressure refrigerant vapor in the first heat exchanger 20 into a supercooled liquid by forced convection heat exchange of air. Supercooling refrigerant liquid is divided into two paths which are connected in parallel with a high-temperature electromagnetic valve and a high-temperature expansion valve, the low-temperature electromagnetic valve and the low-temperature expansion valve are connected and then enter a second heat exchanger 8, the low-temperature refrigerant absorbs heat in the second heat exchanger 8 and then becomes saturated steam, the saturated steam is sucked back into a compressor through a pipeline and enters the next cycle, meanwhile, high-temperature cooling liquid in the battery enters a water storage tank 21 and then is sucked by a water pump 11 and then is sent to the second heat exchanger 8 to be cooled, and the low-temperature cooling liquid is sent to a battery pack to take away heat in the battery. When the temperature of the cooling liquid is too low, the electric heating device 5 in the water tank can heat the cooling liquid, and the temperature of the battery is not too low. During the charging and discharging process of the battery, the battery generates certain heat, so that the temperature is increased, and the temperature increase affects many characteristic parameters of the battery, such as internal resistance, voltage, SOC, available capacity, charging and discharging efficiency and battery life. The battery liquid cooling technology takes away internal heat through continuous circulation of cooling liquid in the battery. The battery core temperature is kept within a reasonable temperature range, and the battery has very important positive significance for improving the service efficiency of the battery and prolonging the service life of the battery.

Claims

1. A vehicle-mounted battery cooling device mainly comprises a compressor, a control panel, a cooling fan, a water pump, a water inlet, a water outlet, a drain valve, a water storage tank, an electric heating device, a first heat exchanger, a second heat exchanger, a low-temperature expansion valve, a high-temperature expansion valve, a low-temperature electromagnetic valve, a high-temperature electromagnetic valve, a door panel switch, a quick plug, a chassis, a unit frame and the like; a chassis is arranged at the bottom in the unit frame, and the compressor, the water pump, the water storage tank, the first heat exchanger and the second heat exchanger are directly fixed on the chassis; the electric heating device is fixed at the bottom of the side surface of the water storage tank through a flange, a liquid filling port is arranged at the upper part of the water storage tank, so that liquid can be conveniently filled into the system and air in the system can be conveniently removed, a liquid level meter is arranged on the side surface of the water storage tank, so that the liquid level in the water storage tank can be conveniently observed, and a liquid level switch is arranged in the water storage tank, so that the phenomenon that the system is overheated and; the cooling fan is fixed on a top plate at the upper part of the first heat exchanger, and a circular flange opening is arranged on the top plate and is conveniently connected with a ventilation pipeline in the vehicle; the control panel is arranged on the upright post at the front side of the machine set frame; the compressor, the first heat exchanger, the second heat exchanger, the low-temperature expansion valve, the high-temperature expansion valve, the low-temperature electromagnetic valve, the high-temperature electromagnetic valve and the like are connected together through copper pipelines to form a refrigerating system, refrigerant liquid flows out of the first heat exchanger and then is divided into two paths to be connected in parallel with the high-temperature electromagnetic valve, the high-temperature expansion valve, the low-temperature electromagnetic valve and the low-temperature expansion valve respectively, and then is connected with the second heat exchanger through; the water inlet and outlet, the water pump and the second heat exchanger are connected together through a pipeline to form a water circulation system; the water inlet and the water outlet are divided into two groups and simultaneously respectively carry out temperature regulation on the two batteries; a water drain valve is arranged at the bottom of the water pipeline; the quick plug is installed on the upright column on the right side of the unit frame, so that the unit can be conveniently and quickly electrically connected and replaced on a vehicle.

2. The on-vehicle battery cooling device according to claim 1, characterized in that: the refrigeration system is respectively provided with a high-temperature electromagnetic valve, a high-temperature expansion valve, a low-temperature electromagnetic valve and a low-temperature expansion valve so as to adapt to running under different environmental temperature conditions, and the system selects the high-temperature or low-temperature electromagnetic valve to be opened through program control.

3. The on-vehicle battery cooling device according to claim 1, characterized in that: the front side upright post of the unit frame is provided with a pressing door switch, so that the cooling fan can be prevented from running when the panel is opened, and the system reliability is improved.