Cooling liquid supplementing system and method

Abstract

The invention relates to the technical field of new energy vehicle charging, in particular to a cooling liquid supplementing system and method.The cooling liquid supplementing system comprises a monitoring module used for obtaining the liquid level of a working water tank; the cooling liquid supplementing module is used for starting the first water pump to pump cooling liquid in the liquid supplementing water tank into the working water tank through the water suction pipe when the liquid level in the working water tank is in a fault liquid level line; the cooling liquid circulation module is used for starting a second water pump to pump the cooling liquid in the working water tank into the cooling circulation loop when the liquid level in the working water tank is in a high liquid level line; the distance between the high liquid level line and the bottom of the working water tank is larger than that between the fault liquid level line and the bottom of the working water tank. The master control module is used for shutting down the first water pump and the second water pump when the time when the liquid level in the working water tank is in the high liquid level line exceeds the preset time; according to the system, the cooling liquid filling efficiency is improved, and the cooling liquid filling difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and particularly to a coolant replenishment system and method. Background Art

[0002] With the continuous development of new energy vehicles, the coverage of supporting facilities such as high-power charging equipment is also becoming wider. High-power charging equipment generates heat during operation. If heat dissipation is not carried out in a timely manner, it will affect the service life, and in severe cases, it may even cause a fire. Liquid cooling is the mainstream heat dissipation method currently adopted by high-power charging equipment. This method requires filling with coolant. In the prior art, when filling with coolant, due to the large amount of coolant required and the relatively high position of the water tank, professional personnel need to climb high and manually fill it multiple times. At the same time of filling, exhaust operation also needs to be carried out synchronously. Such a filling method has the disadvantages of low efficiency and high operation difficulty, and these disadvantages are particularly serious in public application scenarios such as charging stations. Summary of the Invention

[0003] The present invention provides a coolant replenishment system and method to solve the technical problems of low coolant filling efficiency and high operation difficulty in the prior art.

[0004] In a first aspect, a coolant replenishment system is provided. The coolant replenishment system includes a monitoring module, a coolant replenishment module, a coolant circulation module, a master control module, a working water tank, a replenishment water tank, a first water pump, a second water pump, a suction pipe, and a cooling circulation loop;

[0005] The monitoring module is used to obtain the liquid level of the working water tank;

[0006] The coolant replenishment module is used to start the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe when the liquid level in the working water tank is at the fault liquid level line;

[0007] The coolant circulation module is used to start the second water pump to pump the coolant in the working water tank into the cooling circulation loop when the liquid level in the working water tank is at the high liquid level line; the distance from the high liquid level line to the bottom of the working water tank is greater than the distance from the fault liquid level line to the bottom of the working water tank;

[0008] The master control module is used to shut down the first water pump and the second water pump when the time that the liquid level in the working water tank is at the high liquid level line exceeds a preset time.

[0009] Preferably, the monitoring module includes a water pressure monitoring unit, and the master control module includes a water pressure start / stop unit;

[0010] The water pressure monitoring unit is used to monitor the water pressure in the cooling circulation loop;

[0011] The water pressure start-stop unit is used to shut down the second water pump to make the first water pump work alone when the water pressure exceeds a preset threshold, shut down the first water pump when the liquid level in the working water tank is at the high liquid level line, and restart the second water pump; when the second water pump is working, if the liquid level in the working water tank drops to the fault liquid level line, repeat the above steps; if the time when the liquid level in the working water tank is above the fault liquid level line exceeds the preset time, shut down the second water pump and start the first water pump until the liquid level in the working water tank is at the high liquid level line.

[0012] Preferably, the coolant circulation module further includes a circulation protection unit;

[0013] The circulation protection unit is used to shut down the second water pump when the second water pump is working and the liquid level in the working water tank drops to the fault liquid level line, and start the second water pump when the liquid level in the working water tank reaches the high liquid level line again.

[0014] Preferably, the monitoring module includes an alarm unit;

[0015] The alarm unit is used to send an alarm signal when the liquid level in the working water tank is at the alarm liquid level line; the alarm liquid level line is located between the high liquid level line and the fault liquid level line.

[0016] Preferably, the coolant replenishment module includes an active liquid replenishment unit;

[0017] The active liquid replenishment unit is used to obtain a liquid replenishment instruction sent by the user according to the alarm signal, and start the first water pump according to the liquid replenishment instruction to pump the coolant in the replenishment water tank into the working water tank through the suction pipe.

[0018] In a second aspect, a coolant replenishment method is provided, and the coolant replenishment method includes:

[0019] Obtain the liquid level of the working water tank;

[0020] When the liquid level in the working water tank is at the fault liquid level line, start the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe;

[0021] When the liquid level in the working water tank is at the high liquid level line, start the second water pump to pump the coolant in the working water tank into the cooling circulation loop; the distance from the high liquid level line to the bottom of the working water tank is greater than the distance from the fault liquid level line to the bottom of the working water tank;

[0022] When the time when the liquid level in the working water tank is at the high liquid level line exceeds the preset time, shut down the first water pump and the second water pump.

[0023] In the solution implemented by the above coolant replenishment system and method, when the monitoring module monitors that the liquid level in the working water tank is at the fault liquid level, the coolant replenishment module starts the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe, which can achieve automatic replenishment, improve the efficiency of coolant filling and reduce the difficulty of coolant filling. After filling for a period of time, when the monitoring module monitors that the liquid level in the working water tank rises to a predetermined high liquid level line, a second signal is sent to the total control module. After receiving the second signal, the total control module starts the second water pump to pump the coolant into the cooling circulation loop. When the cooling circulation loop is filled with coolant, the air in the cooling circulation loop will be discharged through the one-way exhaust valve in the working water tank or the circulation loop. The sufficient coolant capacity ensures the reliability of liquid cooling heat dissipation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the coolant replenishment system provided by the embodiment of the present application.

[0026] Figure 2 It is a schematic flow chart of an implementation manner of the coolant replenishment method provided by the embodiment of the present application.

[0027] Reference numerals: 10 - monitoring module; 20 - coolant replenishment module; 30 - coolant circulation module; 40 - total control module; 100 - working water tank; 200 - replenishment water tank; 300 - first water pump; 400 - second water pump; 500 - suction pipe; 600 - cooling circulation loop; 700 - heat source. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Figure 1 It is a schematic diagram of the coolant replenishment system provided by the embodiment of the present application, as Figure 1As shown, the coolant replenishment system includes a monitoring module 10, a coolant replenishment module 20, a coolant circulation module 30, a master control module 40, a working water tank 100, a replenishment water tank 200, a first water pump 300, a second water pump 400, a suction pipe 500, and a cooling circulation circuit 600;

[0030] The monitoring module 10 is used to obtain the liquid level of the working water tank 100;

[0031] The coolant replenishment module 20 is used to start the first water pump 300 to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the suction pipe 500 when the liquid level in the working water tank 100 is at the fault liquid level line;

[0032] The coolant circulation module 30 is used to start the second water pump 400 to pump the coolant in the working water tank 100 into the cooling circulation circuit 600 when the liquid level in the working water tank 100 is at the high liquid level line; the distance from the high liquid level line to the bottom of the working water tank 100 is greater than the distance from the fault liquid level line to the bottom of the working water tank 100;

[0033] The master control module 40 is used to shut down the first water pump 300 and the second water pump 400 when the time that the liquid level in the working water tank 100 is at the high liquid level line exceeds a preset time.

[0034] In this embodiment, the monitoring module 10 is used to obtain the liquid level condition of the working water tank 100. When the monitoring module 10 monitors that the liquid level in the working water tank 100 is at the fault liquid level, it sends a first signal to the coolant replenishment module 20. After receiving the first signal, the coolant replenishment module 20 starts the first water pump 300 to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the suction pipe 500, which can achieve automatic liquid replenishment, improve the efficiency of coolant filling and reduce the difficulty of coolant filling. After filling for a period of time, when the monitoring module 10 monitors that the liquid level in the working water tank 100 rises to a predetermined high liquid level line, it sends a second signal to the coolant circulation module 30. After receiving the second signal, the coolant circulation module 30 starts the second water pump 400 to pump the coolant into the cooling circulation loop 600. When the cooling circulation loop 600 is filled with coolant, the air in the cooling circulation loop 600 will be discharged through the working water tank 100 or the one-way exhaust valve in the circulation loop 600. The sufficient coolant capacity ensures the reliability of the liquid cooling and heat dissipation of the system. When the monitoring module 10 monitors that the liquid level in the working water tank 100 is at the high liquid level line for more than the preset time, it means that the liquid level in the working water tank 100 has tended to be stable. At this time, a third signal is sent to the total control module 40 to shut down the first water pump 300 and the second water pump 400, completing the coolant replenishment and avoiding energy waste caused by the continuous operation of the first water pump 300 and the second water pump 400.

[0035] In the above embodiment, the cooling circulation loop 600 generally further includes a heat source 700, and the heat source 700 is usually the rectification module of the charging system. In some cases, it may also be the ultra-fast charging gun of the charging system. The fault liquid level line can be the liquid level line close to the bottom of the working water tank 100. Below this liquid level, the second water pump 400 cannot pump the coolant in the working water tank 100 into the cooling circulation loop 600 for a long time; the high liquid level can be the liquid level close to the maximum capacity of the working water tank 100. Below this liquid level, the second water pump 400 can pump the coolant in the working water tank 100 into the cooling circulation loop 600 for a long time.

[0036] In some embodiments, the monitoring module 10 includes a water pressure monitoring unit, and the total control module 40 includes a water pressure start-stop unit;

[0037] The water pressure monitoring unit is used to monitor the water pressure in the cooling circulation loop 600;

[0038] The water pressure start-stop unit is used to shut down the second water pump 400 when the water pressure exceeds a preset threshold, so that the first water pump 300 works alone. When the liquid level in the working water tank 100 is at the high liquid level line, the first water pump 300 is shut down and the second water pump 400 is restarted. When the second water pump 400 is working, if the liquid level in the working water tank 100 drops to the fault liquid level line, the above steps are repeated. If the time when the liquid level in the working water tank 100 is above the fault liquid level line exceeds the preset time, the second water pump 400 is shut down and the first water pump 300 is started until the liquid level in the working water tank 100 is at the high liquid level line.

[0039] In this embodiment, a threshold value is preset for the water pressure in the cooling circulation loop 600, and the water pressure monitoring unit is used to monitor the water pressure in the cooling circulation loop 600. When the water pressure monitoring unit monitors that the water pressure in the cooling circulation loop 600 exceeds the threshold value, a fourth signal is sent to the water pressure start-stop unit. After receiving the fourth signal, the water pressure start-stop unit shuts down the second water pump 400 to prevent the excessive water pressure in the cooling circulation loop 600 from causing harm to the cooling circulation loop 600 and the heat source 700. At this time, the first water pump 300 works alone for liquid supplement. When the working water tank 100 reaches the high liquid level line, the water pressure start-stop unit shuts down the first water pump 300 and stops pumping the coolant into the working water tank 100. At this time, the second water pump 400 is restarted to pump the coolant in the working water tank 100 into the cooling circulation loop 600. If the liquid level in the working water tank 100 drops to the liquid shortage fault line at this time, the above steps are repeated. If the time when the liquid level in the working water tank 100 is above the fault liquid level line exceeds the preset time, the water pressure start-stop unit shuts down the second water pump 400 and starts the first water pump 300 until the liquid level in the working water tank 100 is at the high liquid level line.

[0040] In some embodiments, the coolant circulation module 30 further includes a circulation protection unit;

[0041] The circulation protection unit is used to shut down the second water pump 400 when the second water pump 400 is working and the liquid level in the working water tank 100 drops to the fault liquid level line, and start the second water pump 400 when the liquid level in the working water tank 100 reaches the high liquid level line again.

[0042] In this embodiment, when the second water pump 400 is working, it pumps the coolant in the working water tank 100 into the cooling circulation loop 600. At this time, the liquid level line of the working water tank 100 may drop to the fault liquid level. When the liquid level in the working water tank 100 drops to the fault liquid level, to prevent the second water pump 400 from continuing to work and pumping air into the cooling circulation loop 600, a fifth signal is sent to the master control module 40 to shut down the second water pump 400. When the first water pump 300 injects the coolant back into the high liquid level line of the working water tank 100, a sixth signal is sent to the master control module 40 to restart the second water pump 400.

[0043] In some embodiments, the monitoring module 10 includes an alarm unit;

[0044] The alarm unit is configured to send an alarm signal when the liquid level in the working water tank 100 is at the alarm liquid level line; the alarm liquid level line is located between the high liquid level line and the fault liquid level line.

[0045] In this embodiment, the alarm liquid level line is located between the high liquid level line and the fault liquid level line. When the liquid level in the working water tank 100 is at the alarm liquid level line, it indicates that the coolant in the working water tank 100 is about to reach the fault liquid level line. At this time, an alarm signal is sent to alarm the user and notify the staff that the coolant in the working water tank 100 is about to run out.

[0046] In some embodiments, the coolant replenishment module 20 includes an active liquid replenishment unit;

[0047] The active liquid replenishment unit is configured to obtain the liquid replenishment instruction sent by the user according to the alarm signal, and start the first water pump 300 according to the liquid replenishment instruction to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the water suction pipe 500.

[0048] In this embodiment, when the user receives the alarm signal, they can actively send a liquid replenishment instruction to replenish the working water tank 100, preventing the liquid level in the working water tank 100 from continuing to drop to the fault liquid level line, and improving the flexibility and fault tolerance of the coolant replenishment system.

[0049] In a specific embodiment, a filter and a check valve are provided in the water suction pipe 500.

[0050] In this embodiment, since the replenishment water tank 200 needs to be opened frequently to add coolant from the outside, there is a risk of foreign objects falling in. The filter is used to prevent foreign objects from entering the working water tank 100 through the water suction pipe 500, protecting the system from foreign object damage and extending its service life. The check valve is used to prevent the coolant from flowing back into the replenishment water tank 200.

[0051] In a specific embodiment, a ball valve is further provided in the water suction pipe 500. The ball valve is a manual operating component and needs to be manually closed when the coolant replenishment system is not replenishing liquid. This is because the suction force of the second water pump 400 is relatively large. If the ball valve is not closed, when the second water pump 400 is performing heat dissipation work, it may suck the air in the water suction pipe 500 into the working water tank 100, and even suck the entire working water tank 100 empty, and then bring the outside air into the circulation system, polluting the coolant and reducing the heat dissipation effect. The ball valve can be installed in a place where it is convenient for the staff to operate.

[0052] In a specific embodiment, a one-way waterproof and breathable valve is provided in the cooling circulation circuit 600 and the working water tank 100.

[0053] In this embodiment, the one-way waterproof and breathable valve is arranged in the cooling circulation circuit 600 and the working water tank 100, and is used to discharge the air in the cooling circulation circuit 600 and the working water tank 100 while preventing the coolant from overflowing. The one-way waterproof and breathable valve can also prevent air from being sucked into the cooling circulation circuit 600 and the working water tank 100. Multiple waterproof and breathable valves can be set in the circulation circuit 600 and the working water tank 100 according to actual needs to accelerate the air discharge speed and shorten the working hours of adding and replenishing liquid.

[0054] A coolant replenishment method is also provided in this embodiment. Figure 2 It is a schematic flow chart of an implementation manner of the coolant replenishment method provided by the embodiment of the present application, as Figure 2 shown. The coolant replenishment method includes:

[0055] S10. Obtain the liquid level of the working water tank 100.

[0056] In this step, the liquid level line of the working water tank 100 is obtained in real time through the monitoring module 10.

[0057] S20. When the liquid level in the working water tank 100 is at the fault liquid level line, start the first water pump 300 to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the water suction pipe 500.

[0058] In this step, when it is monitored that the liquid level in the working water tank 100 is at the fault liquid level, start the first water pump 300 to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the water suction pipe 500, which can realize automatic liquid replenishment, improve the efficiency of coolant filling and reduce the difficulty of coolant filling.

[0059] S30. When the liquid level in the working water tank 100 is at the high liquid level line, start the second water pump 400 to pump the coolant in the working water tank 100 into the cooling circulation loop 600; the distance from the high liquid level line to the bottom of the working water tank 100 is greater than the distance from the fault liquid level line to the bottom of the working water tank 100.

[0060] In this step, after refueling for a period of time, when it is monitored that the liquid level in the working water tank 100 rises to a predetermined high liquid level line, start the second water pump 400 to pump the coolant into the cooling circulation loop 600. When the cooling circulation loop 600 is filled with the coolant, the air inside will be discharged, which not only ensures the stability of the system but also increases the coolant capacity in the whole system.

[0061] S40. When the time that the liquid level in the working water tank 100 is at the high liquid level line exceeds the preset time, shut down the first water pump 300 and the second water pump 400.

[0062] In this step, when it is monitored that the time that the liquid level in the working water tank 100 is at the high liquid level line exceeds the preset time, it means that the liquid level in the working water tank 100 has tended to be stable. At this time, shut down the first water pump 300 and the second water pump 400 to complete the coolant supplement and avoid energy waste caused by the continuous operation of the first water pump 300 and the second water pump 400.

[0063] In some embodiments, after step S30, the method further includes:

[0064] S301. Monitor the water pressure in the cooling circulation loop 600.

[0065] S302. When the water pressure exceeds the preset threshold, shut down the second water pump 400 to make the first water pump 300 work alone. When the liquid level in the working water tank 100 is at the high liquid level line, shut down the first water pump 300 and restart the second water pump 400.

[0066] S303. When the second water pump 400 is working, if the liquid level in the working water tank 100 drops to the fault liquid level line, repeat the above steps.

[0067] In this step, the repeated steps are "shut down the second water pump 400 to make the first water pump 300 work alone. When the liquid level in the working water tank 100 is at the high liquid level line, shut down the first water pump 300 and restart the second water pump 400" in S302.

[0068] S304. If the liquid level in the working water tank 100 is above the fault liquid level line for a time exceeding the preset time, shut down the second water pump 400 and start the first water pump 300 until the liquid level in the working water tank 100 reaches the high liquid level line.

[0069] In this step, there is a threshold preset for the water pressure in the cooling circulation loop 600. The simultaneous operation of the first water pump 300 and the second water pump 400 may cause the water pressure in the cooling circulation loop 600 to exceed the threshold, and at this time, the components of the weak links in the system may be damaged. Therefore, when the water pressure in the cooling circulation loop 600 exceeds the threshold, the first water pump 300 and the second water pump 400 cannot work simultaneously and need to cooperate alternately in switching. First, shut down the second water pump 400, and the first water pump 300 works alone for liquid supplement. When the working water tank 100 reaches the high liquid level line, shut down the first water pump 300 and stop pumping coolant into the working water tank 100. At this time, restart the second water pump 400 to pump the coolant in the working water tank 100 into the cooling circulation loop 600. If the liquid level in the working water tank 100 drops to the liquid shortage fault line at this time, repeat the above steps. If the liquid level in the working water tank 100 is above the fault liquid level line for a time exceeding the preset time, shut down the second water pump 400 and start the first water pump 300 until the liquid level in the working water tank 100 reaches the high liquid level line.

[0070] In some embodiments, after step S30, the method further includes:

[0071] S31. When the second water pump 400 is working and the liquid level in the working water tank 100 drops to the fault liquid level line, shut down the second water pump 400; when the liquid level in the working water tank 100 reaches the high liquid level line again, start the second water pump 400.

[0072] In this step, when the second water pump 400 is working, it will pump the coolant in the working water tank 100 into the cooling circulation loop 600. At this time, the liquid level line of the working water tank 100 may drop to the fault liquid level line. When the liquid level in the working water tank 100 drops to the fault liquid level line, to prevent the second water pump 400 from continuing to work and pumping air into the cooling circulation loop 600, shut down the second water pump 400. Wait until the first water pump 300 injects the coolant into the high liquid level line of the working water tank 100 again, and then restart the second water pump 400.

[0073] In some embodiments, after step S10, the method further includes:

[0074] S11. When the liquid level in the working water tank 100 is at the alarm liquid level line, send an alarm signal; the alarm liquid level line is between the high liquid level line and the fault liquid level line.

[0075] In this embodiment, the alarm liquid level line is located between the high liquid level line and the fault liquid level line. When the liquid level in the working water tank 100 is at the alarm liquid level line, it indicates that the coolant in the working water tank 100 is about to reach the fault liquid level line. At this time, an alarm signal is sent to alarm the user, notifying the staff that the coolant in the working water tank 100 is about to run out and notifying the staff to perform preventive maintenance to avoid shutdown failures.

[0076] In some embodiments, after step S11, the method further includes:

[0077] S12. Obtain a liquid supplement instruction sent by the user according to the alarm signal, and start the first water pump 300 according to the liquid supplement instruction to pump the coolant in the liquid supplement water tank 200 into the working water tank 100 through the suction pipe 500.

[0078] In this embodiment, when the user receives the alarm signal, the user can actively send a liquid supplement instruction to supplement the working water tank 100, preventing the liquid level in the working water tank 100 from continuing to drop to the fault liquid level line, and improving the flexibility and fault tolerance of the coolant replenishment system.

[0079] The coolant replenishment system and method provided by the present invention are not only applicable to the maintenance liquid replenishment of the daily charger system, but also applicable to the liquid filling of the empty charger system before leaving the factory, and can adapt to various scenarios. It is not only applicable to the liquid replenishment of the liquid cooling and heat dissipation systems of the charger AC / DC and DC / DC power module main cabinets with different power segments, but also applicable to the liquid replenishment of the small liquid cooling and heat dissipation systems of the liquid cooling guns with different current specifications.

[0080] In the solution implemented by the coolant replenishment system and method provided by the present invention, it includes a monitoring module 10, a coolant replenishment module 20, a coolant circulation module 30, a master control module 40, a working water tank 100, a replenishment water tank 200, a first water pump 300, a second water pump 400, a water suction pipe 500 and a cooling circulation loop 600. The monitoring module 10 is used to obtain the liquid level condition of the working water tank 100. When the monitoring module 10 monitors that the liquid level in the working water tank 100 is at the fault liquid level, it sends a first signal to the coolant replenishment module 20. After receiving the first signal, the coolant replenishment module 20 starts the first water pump 300 to pump the coolant in the replenishment water tank 200 into the working water tank 100 through the water suction pipe 500, which can realize automatic replenishment, improve the efficiency of coolant filling and reduce the difficulty of coolant filling. After filling for a period of time, when the monitoring module 10 monitors that the liquid level in the working water tank 100 rises to a predetermined high liquid level line, it sends a second signal to the coolant circulation module 30. After receiving the second signal, the coolant circulation module 30 starts the second water pump 400 to pump the coolant into the cooling circulation loop 600. When the cooling circulation loop 600 is filled with coolant, the air in the cooling circulation loop 600 will be discharged through the one-way exhaust valve in the working water tank 100 or the circulation loop 600. The sufficient coolant capacity ensures the reliability of the liquid cooling and heat dissipation of the system. When the monitoring module 10 monitors that the liquid level in the working water tank 100 is at the high liquid level line for more than the preset time, it means that the liquid level in the working water tank 100 has tended to be stable. At this time, it sends a third signal to the master control module 40 to shut down the first water pump 300 and the second water pump 400, completing the coolant replenishment and avoiding energy waste caused by the continuous operation of the first water pump 300 and the second water pump 400.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A coolant replenishment system, characterized in that, It includes a monitoring module, a coolant replenishment module, a coolant circulation module, a master control module, a working water tank, a replenishment water tank, a first water pump, a second water pump, a suction pipe, and a cooling circulation loop; The said monitoring module is used to obtain the liquid level of the working water tank; The said coolant replenishment module is used to start the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe when the liquid level in the working water tank is at the fault liquid level line; The said coolant circulation module is used to start the second water pump to pump the coolant in the working water tank into the cooling circulation loop when the liquid level in the working water tank is at the high liquid level line; the distance from the high liquid level line to the bottom of the working water tank is greater than the distance from the fault liquid level line to the bottom of the working water tank; The said master control module is used to shut down the first water pump and the second water pump when the time that the liquid level in the working water tank is at the high liquid level line exceeds the preset time.

2. The coolant replenishment system according to claim 1, characterized in that, The said monitoring module includes a water pressure monitoring unit, and the said master control module includes a water pressure start-stop unit; The said water pressure monitoring unit is used to monitor the water pressure in the cooling circulation loop; The said water pressure start-stop unit is used to shut down the second water pump to make the first water pump work alone when the water pressure exceeds the preset threshold, shut down the first water pump and restart the second water pump when the liquid level in the working water tank is at the high liquid level line; when the second water pump is working, if the liquid level in the working water tank drops to the fault liquid level line, repeat the above steps; if the time that the liquid level in the working water tank is above the fault liquid level line exceeds the preset time, shut down the second water pump and start the first water pump until the liquid level in the working water tank is at the high liquid level line.

3. The coolant replenishment system according to claim 1, wherein The said coolant circulation module further includes a circulation protection unit; The said circulation protection unit is used to shut down the second water pump when the second water pump is working and the liquid level in the working water tank drops to the fault liquid level line, and start the second water pump when the liquid level in the working water tank reaches the high liquid level line again.

4. The coolant replenishment system according to claim 1, characterized in that, The said monitoring module includes an alarm unit; The said alarm unit is used to send an alarm signal when the liquid level in the working water tank is at the alarm liquid level line; the alarm liquid level line is located between the high liquid level line and the fault liquid level line.

5. The coolant replenishment system according to claim 4, characterized in that, The said coolant replenishment module includes an active replenishment unit; The said active replenishment unit is used to obtain the replenishment instruction sent by the user according to the alarm signal, and start the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe according to the replenishment instruction.

6. A coolant replenishment method, characterized in that, It includes: Obtain the liquid level of the working water tank; When the liquid level in the working water tank is at the fault liquid level line, start the first water pump to pump the coolant in the replenishment water tank into the working water tank through the suction pipe; When the liquid level in the working water tank is at the high liquid level line, start the second water pump to pump the coolant in the working water tank into the cooling circulation loop; the distance from the high liquid level line to the bottom of the working water tank is greater than the distance from the fault liquid level line to the bottom of the working water tank; When the liquid level in the working water tank remains at the high liquid level line for a time exceeding the preset time, shut down the first water pump and the second water pump.

7. The coolant replenishment method according to claim 6, characterized in that, After starting the second water pump to pump the coolant in the working water tank into the cooling circulation loop, it further includes: Monitoring the water pressure in the cooling circulation loop; When the water pressure exceeds the preset threshold, shut down the second water pump to make the first water pump work alone. When the liquid level in the working water tank is at the high liquid level line, shut down the first water pump and restart the second water pump; When the second water pump is working, if the liquid level in the working water tank drops to the fault liquid level line, repeat the above steps; If the time when the liquid level in the working water tank is above the fault liquid level line exceeds the preset time, shut down the second water pump and start the first water pump until the liquid level in the working water tank is at the high liquid level line.

8. The coolant replenishing method according to claim 6, wherein After starting the second water pump to pump the coolant in the working water tank into the cooling circulation loop, the method further includes: When the second water pump is working and the liquid level in the working water tank drops to the fault liquid level line, shut down the second water pump; when the liquid level in the working water tank reaches the high liquid level line again, start the second water pump.

9. The coolant replenishment method according to claim 6, wherein After obtaining the liquid level of the working water tank, it further includes: When the liquid level in the working water tank is at the alarm liquid level line, send an alarm signal; the alarm liquid level line is located between the high liquid level line and the fault liquid level line.

10. The coolant replenishment method according to claim 9, characterized in that, The method further includes: Obtaining a liquid supplement instruction sent by the user according to the alarm signal, and starting the first water pump according to the liquid supplement instruction to pump the coolant in the liquid supplement water tank into the working water tank through the suction pipe.

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