Thermal management system for marine battery

Abstract

The utility model discloses a thermal management system for a marine battery, which is characterized in that a refrigerant outlet of an electric compressor is communicated with one end of a first refrigerant flowing channel of a water-cooling condenser through a connecting pipeline, and two ends of a water-cooling flowing channel of the water-cooling condenser are communicated with a water-cooling device; the other end of the first refrigerant flowing channel of the water-cooling condenser is connected with an evaporator, the evaporator is connected with a refrigerant backflow port of the electric compressor, and the first refrigerant flowing channel of the water-cooling condenser is communicated with one end of a second refrigerant flowing channel of the battery cooler. The other end of the second refrigerant flowing channel of the battery cooler is connected with a refrigerant backflow port of the electric compressor, a first switch valve is arranged between the water-cooling condenser and the evaporator, and a second switch valve is arranged between the water-cooling condenser and the battery cooler. Two ends of a cooling liquid flowing channel of the battery cooler are connected with a battery cooling liquid loop device; the system can improve the refrigeration effect of the air conditioner in the ship, meanwhile, the temperature of the battery can be controlled, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery state control for electric boats, in particular to a battery thermal management system for boats Background Art

[0002] Boats are needed in rivers for operations such as salvaging debris. Currently, electric boats are used as boats. During the use of electric boats, when the weather is too hot and air conditioning is needed to cool the electric boat, the condenser inside the air conditioner uses air cooling during heat exchange, and the fan fan creates an air flow to dissipate the heat. The condenser is at room temperature. When the room temperature is too high, the temperature inside the condenser cannot exchange heat with the outside through airflow, resulting in poor cooling effect. In addition, the fan needs to be continuously fanned and needs to be connected to the battery in the electric boat, resulting in increased power consumption. The battery of the electric boat also needs to continuously power the electrical items of the electric boat and drive the boat to move. The battery temperature will continue to rise, and the battery temperature needs to be controlled to be constant. Utility Model Content

[0003] The technical problem to be solved by the utility model is: a marine battery thermal management system, which can improve the refrigeration effect of the air conditioner in the ship and can also control the temperature of the battery to improve the use effect.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a marine battery thermal management system, including an electric compressor, the refrigerant outlet of the electric compressor is connected to one end of the first refrigerant flow channel of the water-cooled condenser through a connecting pipeline, the two ends of the water-cooled flow channel of the water-cooled condenser are connected to the water cooling device, the other end of the first refrigerant flow channel of the water-cooled condenser is connected to the evaporator through a connecting pipeline, the evaporator is further connected to the refrigerant return port of the electric compressor through a connecting pipeline, the first refrigerant flow channel of the water-cooled condenser is also connected to one end of the second refrigerant flow channel of the battery cooler through a connecting pipeline, and the evaporator and the water-cooled condenser are connected. An expansion valve is provided on the connecting pipeline between the first refrigerant flow channel of the battery cooler and between the second refrigerant flow channel of the battery cooler and the first refrigerant flow channel of the water-cooled condenser. The other end of the second refrigerant flow channel of the battery cooler is connected to the refrigerant return port of the electric compressor through a connecting pipeline. A first switching valve of the switching connecting pipeline is provided between the water-cooled condenser and the evaporator. A second switching valve of the switching second refrigerant flow channel is provided between the water-cooled condenser and the battery cooler. Both ends of the coolant flow channel of the battery cooler are connected to a battery coolant circuit device for controlling the battery temperature. The battery coolant and the refrigerant perform heat exchange in the battery cooler.

[0005] As a preferred solution, the water cooling device includes a water-cooled liquid inlet pipeline and a water-cooled liquid outlet pipeline, the water-cooled liquid inlet pipeline and the water-cooled liquid outlet pipeline are connected to the water-cooled flow channel of the water-cooled condenser, the pipe mouth of the water-cooled liquid inlet pipeline extends into the river, and a water-cooled water pump and a filter are installed on the water-cooled liquid inlet pipeline.

[0006] As a preferred solution, the filter includes a connecting pipe connected to the water-cooled liquid inlet pipeline, a filter tube integrated with the connecting pipe is radially penetrated through the connecting pipe, a filter mesh tube for filtering impurities is detachably installed in the filter tube, and a holding portion for easy holding is provided on the filter mesh tube.

[0007] As a preferred solution, the battery coolant circuit device includes a coolant pipeline, which is connected to both ends of the coolant flow channel to form a loop, and a coolant water pump, an expansion water tank and a battery water cooling plate are installed in sequence on the coolant pipeline.

[0008] As a preferred solution, a battery heater is also provided on the coolant pipeline.

[0009] As a preferred solution, a liquid storage dryer is installed on the connecting pipeline between the water-cooled condenser and the expansion valve.

[0010] As a preferred solution, both the first switch valve and the second switch valve are solenoid valves.

[0011] After adopting the above technical scheme, the effect of the utility model is as follows: since the marine battery thermal management system includes an electric compressor, the refrigerant outlet of the electric compressor is connected to one end of the first refrigerant flow channel of the water-cooled condenser through a connecting pipeline, and the two ends of the water-cooled flow channel of the water-cooled condenser are connected to the water cooling device, the other end of the first refrigerant flow channel of the water-cooled condenser is connected to the evaporator through a connecting pipeline, and the evaporator is further connected to the refrigerant return port of the electric compressor through a connecting pipeline, the first refrigerant flow channel of the water-cooled condenser is also connected to one end of the second refrigerant flow channel of the battery cooler through a connecting pipeline, an expansion valve is provided on the connecting pipeline between the evaporator and the first refrigerant flow channel of the water-cooled condenser, and between the second refrigerant flow channel of the battery cooler and the first refrigerant flow channel of the water-cooled condenser, the other end of the second refrigerant flow channel of the battery cooler is connected to the refrigerant return port of the electric compressor through a connecting pipeline, a first switch valve of the switch connecting pipeline is provided between the water-cooled condenser and the evaporator, and a second switch valve of the switch second refrigerant flow channel is provided between the water-cooled condenser and the battery cooler, Both ends of the coolant flow channel of the battery cooler are connected to a battery coolant loop device for controlling the battery temperature. The battery coolant and the refrigerant perform heat exchange in the battery cooler. First, the refrigerant is compressed by an electric compressor and then transported to a water-cooled condenser. At this time, the water cooling device on the water-cooled condenser performs heat exchange on the refrigerant, causing the refrigerant to change from a high-temperature and high-pressure gas to a liquid state while cooling. Then, the refrigerant continues to pass through the expansion valve to continue cooling the refrigerant. At the same time, the refrigerant becomes a gas-liquid mixed state. When the first switch valve is opened, the refrigerant enters the evaporator. At this time, The evaporator vaporizes the liquid refrigerant, thereby absorbing the surrounding heat, and then blows out the air through the fan to cool it. The vaporized liquid refrigerant re-enters the electric compressor for circulation. When the second switch valve is opened, the refrigerant will enter the battery cooler. At this time, the refrigerant will exchange heat with the coolant, thereby cooling the coolant. In this way, the battery coolant circuit can cool the battery, and the refrigerant in the battery cooler also returns to the electric compressor. This system can improve the cooling effect of the air conditioning on board, and at the same time can control the temperature of the battery to improve the use effect.

[0012] Furthermore, since the water cooling device comprises a water-cooling liquid inlet pipeline and a water-cooling liquid outlet pipeline, the water-cooling liquid inlet pipeline and the water-cooling liquid outlet pipeline are connected to the water-cooling flow channel of the water-cooled condenser, the pipe mouth of the water-cooling liquid inlet pipeline extends into the river, and a water-cooling water pump and a filter are installed on the water-cooling liquid inlet pipeline; the water in the river can be effectively pumped by the water-cooling water pump, and filtered through the filter to prevent impurities from entering and affecting the use of the water-cooling water pump. At the same time, the water in the river can ensure the stability of heat exchange and improve the refrigeration effect.

[0013] Furthermore, since the filter includes a connecting tube connected to the water-cooled liquid inlet pipeline, a filter tube integrated with the connecting tube is radially penetrated through the connecting tube, a filter mesh tube for filtering impurities is detachably installed in the filter tube, and a holding portion for easy holding is provided on the filter mesh tube; this makes it easy to replace the filter mesh tube, ensures the filtering effect, and the holding portion can be easily held.

[0014] Furthermore, since the battery coolant circuit device includes a coolant pipeline, the coolant pipeline is connected to both ends of the coolant flow channel to form a loop, and a coolant water pump, an expansion water tank and a battery water cooling plate are installed on the coolant pipeline in sequence; the battery water cooling plate can facilitate the passage of the coolant to take away the heat generated by the battery, and then the heat exchange is carried out through the battery cooler to cool the coolant again, thereby ensuring that the battery is cooled quickly and stably.

[0015] Furthermore, since a battery heater is also provided on the coolant pipeline, when the battery needs to be heated, the flowing coolant can be heated by the battery heater on the coolant pipeline, so that the coolant can effectively heat the battery when on the battery water cooling plate, thus adapting to different usage environments.

[0016] Furthermore, a liquid storage dryer is installed on the connecting pipeline between the water-cooled condenser and the expansion valve; the moisture in the connecting pipeline is absorbed and tiny impurities in the pipeline are filtered out.

[0017] Furthermore, since both the first switch valve and the second switch valve are electromagnetic valves, it is convenient to remotely control the opening or closing of the valves, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a filter according to an embodiment of the utility model;

[0021] In the attached drawings: 1. electric compressor; 2. water-cooled condenser; 3. connecting pipeline; 4. evaporator; 5. battery cooler; 6. first switch valve; 7. second switch valve; 8. three-way valve; 9. water-cooled liquid inlet pipeline; 10. water-cooled liquid outlet pipeline; 11. water-cooled water pump; 12. filter; 13. connecting pipe; 14. filter pipe; 15. filter mesh pipe; 16. holding part; 17. coolant pipeline; 18. coolant water pump; 19. expansion water tank; 20. battery water cooling plate; 21. battery heater; 22. liquid storage dryer; 23. expansion valve; 24. refrigerant outlet; 25. refrigerant reflux port; 26. first refrigerant flow channel; 27. water-cooled flow channel; 28. second refrigerant flow channel; 29. ​​coolant flow channel. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below through specific embodiments.

[0023] like Figure 1 and Figure 2 As shown, a marine battery thermal management system comprises an electric compressor 1, wherein a refrigerant outlet 24 of the electric compressor 1 is connected to one end of a first refrigerant flow channel 26 of a water-cooled condenser 2 through a connecting pipe 3, and both ends of a water-cooled flow channel 27 of the water-cooled condenser 2 are connected to a water cooling device, and the other end of the first refrigerant flow channel 26 of the water-cooled condenser 2 is connected to an evaporator 4 through a connecting pipe 3, and the evaporator 4 is further connected to a refrigerant return port 25 of the electric compressor 1 through a connecting pipe 3, and the first refrigerant flow channel 26 of the water-cooled condenser 2 is also connected to one end of a second refrigerant flow channel 28 of a battery cooler 5 through a connecting pipe 3, and an expansion valve 23 is provided on the connecting pipe 3 between the evaporator 4 and the first refrigerant flow channel 26 of the water-cooled condenser 2 and between the second refrigerant flow channel 28 of the battery cooler 5 and the first refrigerant flow channel 26 of the water-cooled condenser 2. The other end of the second refrigerant flow channel 28 is connected to the refrigerant return port 25 of the electric compressor 1 through the connecting pipe 3. A first switch valve 6 for switching the connecting pipe 3 is provided between the water-cooled condenser 2 and the evaporator 4. A second switch valve 7 for switching the second refrigerant flow channel 28 is provided between the water-cooled condenser 2 and the battery cooler 5. Both ends of the coolant flow channel 29 of the battery cooler 5 are connected to a battery coolant loop device for controlling the battery temperature. The battery coolant and the refrigerant perform heat exchange in the battery cooler. After the refrigerant medium comes out of the first refrigerant flow channel 26 of the water-cooled condenser 2, it enters the connecting pipe 3 and is then divided into two connecting pipes 3 respectively connected to the evaporator 4 and the battery cooler 5 through a three-way valve 8. The first switch valve 6 and the second switch valve 7 are arranged on the two separated connecting pipes 3. Finally, another three-way valve 8 can be used to effectively summarize the refrigerant return port 25 connected to the electric compressor 1.

[0024] In this embodiment, the water cooling device includes a water-cooling inlet pipeline 9 and a water-cooling outlet pipeline 10, and the water-cooling inlet pipeline 9 and the water-cooling outlet pipeline 10 are connected to the water-cooling flow channel 27 of the water-cooled condenser 2, and the pipe mouth of the water-cooling inlet pipeline 9 extends into the river, and a water-cooling pump 11 and a filter 12 are installed on the water-cooling inlet pipeline 9; since the ship will always travel on the river, the water in the river is very easy to obtain and the temperature is not too high, so the refrigerant medium can be effectively heat exchanged, and the water-cooling inlet pipeline 9 is in the river to ensure that the extraction of river water is stable and effective; filtering is carried out through the filter 12 to prevent impurities from entering and affecting the use of the water-cooling pump 11.

[0025] like Figure 2 As shown, the filter 12 includes a connecting pipe 13 connected to the water-cooled liquid inlet pipeline 9, and a filter tube 14 is radially penetrated on the connecting pipe 13 and is integrated with the connecting pipe 13. A filter mesh tube 15 for filtering impurities is detachably installed in the filter tube 14, and a holding portion 16 for convenient holding is provided on the filter mesh tube 15; in this way, the filter mesh tube 15 can be easily replaced to ensure the filtering effect. The filter mesh tube 15 can ensure that the river water passing through the connecting pipe 13 is effectively filtered when used, and the filter mesh tube 15 is fixedly installed in the filter tube 14 by other detachable structures such as locks, and the holding portion 16 can also facilitate the holding of the filter mesh tube 15; the filter 12 is an existing structure available on the market, and filters 12 of other structural types can also be used.

[0026] like Figure 1 As shown, the battery coolant circuit device includes a coolant pipeline 17, and the coolant pipeline 17 is connected to both ends of the coolant flow channel 29 to form a loop. A coolant water pump 18, an expansion water tank 19 and a battery water cooling plate 20 are installed in sequence on the coolant pipeline 17; the battery water cooling plate 20 can facilitate the passage of the coolant to take away the heat generated by the battery, and then the coolant is cooled again through the battery cooler 5 for heat exchange, thereby ensuring that the battery is cooled quickly and stably.

[0027] In this embodiment, the coolant pipeline 17 is located downstream of the battery water cooling plate 20 and is also provided with a battery heater 21; when the battery needs to be heated, the battery heater 21 on the coolant pipeline 17 can heat the flowing coolant, so that the coolant can effectively heat the battery when it is on the battery water cooling plate 20, adapting to different usage environments.

[0028] A liquid storage dryer 22 is installed on the connecting pipeline 3 between the water-cooled condenser 2 and the expansion valve 23 to absorb the moisture in the connecting pipeline 3 and filter out tiny impurities in the pipeline.

[0029] The first switch valve 6 and the second switch valve 7 are both solenoid valves, which facilitate remote control to open or close the valves and improve convenience.

[0030] The system has five working modes:

[0031] 1. Air conditioning mode: the electric compressor 1 is turned on, the refrigerant enters the water-cooled condenser 2, the water-cooled water pump 11 starts pumping water, and the refrigerant then passes through the expansion valve 23 and opens the first switch valve 6 to enter the evaporator 4, where it vaporizes and absorbs heat, completes cooling, and then returns to the electric compressor 1 for circulation;

[0032] 2. Battery cooling mode; the electric compressor 1 is turned on, the refrigerant enters the water-cooled condenser 2, the water-cooled water pump 11 starts to pump water, and the refrigerant then passes through the expansion valve 23 and opens the second switch valve 7 to enter the battery cooler 5. The coolant pump 18 operates to circulate the coolant in the coolant pipeline 17, the battery water cooling plate 20 takes away the heat of the battery, and the coolant passes through the battery cooler 5 for heat exchange.

[0033] 3. Air conditioning and battery cooling mode: the electric compressor 1 is turned on, the refrigerant enters the water-cooled condenser 2, the water-cooled water pump 11 starts pumping water, and the refrigerant then passes through the expansion valve 23 and opens the first switch valve 6 and the second switch valve 7, and enters the evaporator 4 and the battery cooler 5 respectively. The evaporator 4 vaporizes and absorbs heat to complete the cooling. The coolant pump 18 operates to circulate the coolant in the coolant pipeline 17, and the battery water cooling plate 20 takes away the heat of the battery. The coolant passes through the battery cooler 5 for heat exchange, and finally the refrigerant is collected and re-enters the refrigerant return port 25 of the electric compressor 1;

[0034] 4. Battery heating mode: Turn on the battery heater 21 to increase the temperature of the coolant, thereby gradually heating the battery on the battery water cooling plate 20;

[0035] 5. Battery self-circulation mode: The coolant pump 18 is turned on to allow the coolant to circulate in the coolant pipeline 17.

[0036] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. A marine battery thermal management system, comprising an electric compressor, characterized in that: The refrigerant outlet of the electric compressor is connected to one end of the first refrigerant flow channel of the water-cooled condenser through a connecting pipeline, and both ends of the water-cooled flow channel of the water-cooled condenser are connected to the water cooling device. The other end of the first refrigerant flow channel of the water-cooled condenser is connected to the evaporator through a connecting pipeline, and the evaporator is further connected to the refrigerant return port of the electric compressor through a connecting pipeline. The first refrigerant flow channel of the water-cooled condenser is also connected to one end of the second refrigerant flow channel of the battery cooler through a connecting pipeline. The second refrigerant flow channel between the evaporator and the first refrigerant flow channel of the water-cooled condenser and the battery cooler An expansion valve is provided on the connecting pipeline between the refrigerant flow channel and the first refrigerant flow channel of the water-cooled condenser, and the other end of the second refrigerant flow channel of the battery cooler is connected to the refrigerant return port of the electric compressor through a connecting pipeline. A first switching valve of the switching connecting pipeline is provided between the water-cooled condenser and the evaporator, and a second switching valve for switching the second refrigerant flow channel is provided between the water-cooled condenser and the battery cooler. Both ends of the coolant flow channel of the battery cooler are connected to a battery coolant circuit device for controlling the battery temperature, and the battery coolant and the refrigerant perform heat exchange in the battery cooler.

2. A marine battery thermal management system as claimed in claim 1, characterized in that: The water cooling device includes a water cooling inlet pipeline and a water cooling outlet pipeline, the water cooling inlet pipeline and the water cooling outlet pipeline are connected to the water cooling flow channel of the water cooling condenser, the pipe mouth of the water cooling inlet pipeline extends into the river, and a water cooling water pump and a filter are installed on the water cooling inlet pipeline.

3. A marine battery thermal management system as claimed in claim 2, characterized in that: The filter comprises a connecting pipe connected to a water-cooled liquid inlet pipeline, a filter tube which is radially penetrated by the connecting pipe and is integrated with the connecting pipe, a filter mesh tube for filtering impurities is detachably installed in the filter tube, and a holding portion for convenient holding is provided on the filter mesh tube.

4. A marine battery thermal management system as claimed in claim 2, characterized in that: The battery coolant circuit device comprises a coolant pipeline, which is connected to both ends of a coolant flow channel to form a loop, and a coolant water pump, an expansion water tank and a battery water cooling plate are sequentially installed on the coolant pipeline.

5. A marine battery thermal management system as claimed in claim 4, characterized in that: The coolant pipeline is also provided with a battery heater.

6. A marine battery thermal management system as claimed in claim 5, characterized in that: A liquid storage dryer is installed on the connecting pipeline between the water-cooled condenser and the expansion valve.

7. A marine battery thermal management system as claimed in claim 6, characterized in that: The first switch valve and the second switch valve are both solenoid valves.

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