Liquid supplementing device

Abstract

The utility model relates to the technical field of thermal management systems, and particularly discloses a liquid supplementing device which comprises an anti-freezing liquid barrel, a liquid storage assembly and a liquid supplementing assembly, and anti-freezing liquid is stored in the anti-freezing liquid barrel; the liquid storage assembly comprises a liquid storage box and an exhaust box, the liquid storage box is provided with a liquid storage groove, the exhaust box is arranged in the liquid storage groove, the exhaust box is provided with an exhaust groove, and a groove opening of the exhaust groove is lower than a groove opening of the liquid storage groove in the vertical direction; the liquid supplementing assembly comprises a liquid supplementing pump and a liquid supplementing pipe, one end of the liquid supplementing pipe is used for being communicated with a liquid discharging opening of a liquid discharging three-way valve of the heat management system, the other end of the liquid supplementing pipe extends into the air discharging groove, the liquid supplementing pump is arranged in the liquid storage box, and a liquid inlet of the liquid supplementing pump is lower than a groove opening of the air discharging groove in the vertical direction; a liquid outlet of the liquid supplementing pump is used for being communicated with a liquid supplementing opening of the liquid cooling unit. According to the liquid supplementing device, the extreme consequences of frequent liquid shortage report, unbalanced refrigeration and heating, loss of the service life of a battery cell, thermal runaway and the like caused by incomplete exhaust of a liquid cooling pipeline are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management systems, in particular to a fluid replenishing device. Background Art

[0002] Currently, there are two mainstream thermal management methods for energy storage systems, air cooling and liquid cooling. Compared with air cooling, liquid cooling has higher heat dissipation speed and efficiency, and has the characteristics of large heat load, low flow resistance and high heat exchange efficiency. It is widely used in occasions with high battery energy density and fast charging and discharging speed.

[0003] For thermal management systems, liquid cooling pipes are one of the necessary functional structural components. After the cabinet / container is assembled or the relevant liquid cooling pipe parts are replaced, antifreeze needs to be added to meet the circulation cooling / heating needs.

[0004] The thermal management system usually includes a liquid cooling unit 101, a cold plate 102 and a three-way drain valve 103. The liquid outlet of the liquid cooling unit 101 is connected to the liquid inlet of the cold plate 102, the liquid outlet of the cold plate 102 is connected to the liquid inlet of the three-way drain valve 103, and the liquid outlet of the three-way drain valve 103 is connected to the liquid inlet of the liquid cooling unit 101. When liquid replenishment is needed, the liquid outlet of the liquid replenishment device is connected to the liquid replenishment port of the liquid cooling unit 101, and the liquid discharge port of the three-way drain valve 103 is connected to the liquid return port of the liquid replenishment device, so as to realize the filling of the antifreeze liquid 11.

[0005] During the filling process, some free bubbles in the antifreeze 11 are difficult to exhaust and enter the liquid cooling pipeline, resulting in incomplete exhaust of the liquid cooling pipeline, causing frequent liquid shortage reports, unbalanced cooling and heating, loss of battery cell life, thermal runaway and other extreme consequences. Utility Model Content

[0006] The purpose of the utility model is to provide a liquid replenishing device to solve the problem in the related art that some free bubbles in the antifreeze are difficult to exhaust and then enter the liquid cooling pipeline, resulting in incomplete exhaust of the liquid cooling pipeline, causing frequent liquid shortage reports, unbalanced cooling and heating, loss of battery life, and thermal runaway.

[0007] The utility model provides a fluid replenishing device, which comprises:

[0008] An antifreeze barrel, in which antifreeze is stored;

[0009] A liquid storage assembly, comprising a liquid storage box and an exhaust box, wherein the liquid storage box is provided with a liquid storage tank, the exhaust box is arranged in the liquid storage tank, and the exhaust box is provided with an exhaust groove, and along the vertical direction, the notch of the exhaust groove is lower than the notch of the liquid storage tank;

[0010] The rehydration assembly includes a rehydration pump and a rehydration tube, one end of the rehydration tube is used to connect with the discharge port of the discharge three-way valve of the thermal management system, and the other end of the rehydration tube extends into the exhaust groove. The rehydration pump is arranged in the liquid storage box, the liquid inlet of the rehydration pump is lower than the notch of the exhaust groove along the vertical direction, and the liquid outlet of the rehydration pump is used to connect with the rehydration port of the liquid cooling unit.

[0011] As a preferred technical solution of the liquid replenishing device, it also includes a gas-liquid separator, which is connected in series on the pipeline between the liquid replenishing pump and the liquid cooling unit.

[0012] As a preferred technical solution of the fluid infusion device, the fluid storage assembly further includes a fixed bracket, which is disposed in the fluid storage tank and fixedly connected to the fluid storage box, and is used to fix the fluid infusion pump.

[0013] As a preferred technical solution of the fluid replenishment device, the fluid replenishment component also includes a ball valve, and the ball valve is arranged on the pipeline between the fluid replenishment pump and the liquid cooling unit.

[0014] As a preferred technical solution of the fluid infusion device, the fluid infusion tube is a transparent tube.

[0015] As a preferred technical solution of the liquid replenishing device, the liquid storage assembly further includes two lifting ears, and the two lifting ears are respectively fixed to two opposite side walls of the liquid storage box.

[0016] As a preferred technical solution of the fluid replenishing device, the fluid storage assembly further includes an end cover, and the end cover is used to close the notch of the fluid storage tank.

[0017] As a preferred technical solution for the fluid replenishing device, it also includes a trolley, which includes a body and a handle. The antifreeze liquid barrel, the liquid storage assembly and the fluid replenishing assembly are all arranged on the body, and the handle is fixedly connected to the body.

[0018] As a preferred technical solution for the fluid replenishing device, the trolley further comprises a fence, which is fixed to the vehicle body and encloses a fixed groove, and the antifreeze liquid barrel and the liquid storage assembly are both inserted into the fixed groove.

[0019] As a preferred technical solution of the fluid replenishing device, the trolley further includes a mounting platform, and the mounting platform is fixed to the handle.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a fluid replenishing device, which comprises an antifreeze liquid barrel, a liquid storage component and a fluid replenishing component, wherein the antifreeze liquid is stored in the antifreeze liquid barrel; the liquid storage component comprises a liquid storage box and an exhaust box, the liquid storage box is provided with a liquid storage tank, the exhaust box is arranged in the liquid storage tank, the exhaust box is provided with an exhaust tank, and along the vertical direction, the notch of the exhaust tank is lower than the notch of the liquid storage tank; the fluid replenishing component comprises a fluid replenishing pump and a fluid replenishing pipe, one end of the fluid replenishing pipe is used to be connected with the discharge port of the discharge three-way valve of the thermal management system, and the other end of the fluid replenishing pipe extends into the exhaust tank, the fluid replenishing pump is arranged in the liquid storage box, the fluid inlet of the fluid replenishing pump is lower than the notch of the exhaust tank along the vertical direction, and the fluid outlet of the fluid replenishing pump is used to be connected with the fluid replenishing port of the liquid cooling unit. When replenishing the thermal management system, the replenishing device introduces part of the antifreeze in the antifreeze barrel into the liquid storage tank in advance, and the liquid level of the antifreeze at this time needs to be lower than the notch of the exhaust groove and higher than the liquid inlet of the replenishing pump, and the liquid inlet, liquid outlet and liquid discharge port of the drain three-way valve are connected in pairs. At this time, part of the coolant flowing out of the cold plate flows into the liquid cooling component, and the other part flows directly into the exhaust groove. The coolant level in the exhaust groove gradually rises until it overflows from the notch of the exhaust groove into the liquid storage tank. At this time The liquid with bubbles flowing out of the thermal management system converges with the antifreeze in the original liquid storage tank. Since the bubbles in the liquid storage tank are located on the surface of the antifreeze, the bubbles can be discharged from the surface of the antifreeze quickly. At the same time, the refilling pump works to add the antifreeze without bubbles in the lower layer of the liquid storage tank into the thermal management system through the refilling port of the liquid cooling unit until the antifreeze overflowing from the exhaust tank is free of bubbles. Only the inlet and outlet of the drain three-way valve are connected to complete the refilling of the thermal management system. This avoids incomplete exhaust of the liquid cooling pipeline, which leads to frequent reports of lack of liquid, unbalanced cooling and heating, loss of battery life, thermal runaway and other extreme consequences. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the liquid replenishing device in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure of the liquid replenishing device in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 The structure of the liquid replenishing device in the embodiment of the utility model is shown in FIG. Figure 3 ;

[0025] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0026] Figure 5 for Figure 4 Sectional view at the middle BB;

[0027] Figure 6Schematic diagram of the pipe connection between the liquid replenishing device and the thermal management system in the embodiment of the utility model Figure 1 ;

[0028] Figure 7 Schematic diagram of the pipe connection between the liquid replenishing device and the thermal management system in the embodiment of the utility model Figure 2 .

[0029] In the figure:

[0030] Z, vertical direction;

[0031] 101. Liquid cooling unit; 102. Cold plate; 103. Drain three-way valve;

[0032] 1. Antifreeze barrel; 11. Antifreeze;

[0033] 2. Liquid storage assembly; 21. Liquid storage box; 211. Liquid storage tank; 22. Exhaust box; 221. Exhaust tank; 23. Fixed bracket; 24. Lifting ear; 25. End cover;

[0034] 3. Fluid replenishment assembly; 31. Fluid replenishment pump; 32. Fluid replenishment tube; 33. Ball valve; 34. Right-angle elbow; 35. Conversion joint;

[0035] 4. Gas-liquid separator;

[0036] 5. Trolley; 51. Car body; 52. Handle; 53. Fence; 54. Installation platform. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] When the replenishing pump 31 runs at high speed and the liquid pump of the liquid cooling unit 101 runs at full speed, the impellers in the two pumps will beat the air into bubbles that are free in the antifreeze 11. Because the antifreeze 11 is 50% ethylene glycol + 50% deionized water and has a high viscosity, these free bubbles are difficult to separate quickly from the antifreeze 11 under high-speed movement.

[0042] To solve this problem, Figures 1 to 7As shown, the present embodiment provides a liquid replenishing device, which includes an antifreeze liquid barrel 1, a liquid storage component 2 and a liquid replenishing component 3. The antifreeze liquid barrel 1 stores antifreeze liquid 11; the liquid storage component 2 includes a liquid storage box 21 and an exhaust box 22. The liquid storage box 21 is provided with a liquid storage tank 211, and the exhaust box 22 is arranged in the liquid storage tank 211. The exhaust box 22 is provided with an exhaust groove 221. Along the vertical direction Z, the notch of the exhaust groove 221 is lower than the liquid storage tank 21. 1; the refilling assembly 3 includes a refilling pump 31 and a refilling tube 32, one end of the refilling tube 32 is used to communicate with the discharge port of the discharge three-way valve 103 of the thermal management system, and the other end of the refilling tube 32 extends into the exhaust groove 221, the refilling pump 31 is arranged in the liquid storage box 21, the liquid inlet of the refilling pump 31 is lower than the notch of the exhaust groove 221 along the vertical direction Z, and the liquid outlet of the refilling pump 31 is used to communicate with the refilling port of the liquid cooling unit 101. When replenishing the thermal management system, the replenishing device introduces part of the antifreeze 11 in the antifreeze barrel 1 into the liquid storage tank 211 in advance, and at this time the liquid level of the antifreeze 11 needs to be lower than the notch of the exhaust groove 221 and higher than the liquid inlet of the replenishing pump 31, and the liquid inlet, liquid outlet and liquid discharge port of the drain three-way valve 103 are connected in pairs. At this time, part of the coolant flowing out of the cold plate 102 flows into the liquid cooling component, and the other part directly flows into the exhaust groove 221. The coolant level in the exhaust groove 221 gradually rises until it overflows from the notch of the exhaust groove 221 into the liquid storage tank 211. At this time The liquid with bubbles flowing out of the thermal management system converges with the antifreeze 11 in the original liquid storage tank 211. Since the bubbles are located on the surface of the antifreeze 11 in the liquid storage tank 211, the bubbles can be quickly discharged from the surface of the antifreeze 11. At the same time, the refilling pump 31 works to replenish the antifreeze 11 without bubbles in the lower layer of the liquid storage tank 211 into the thermal management system through the refilling port of the liquid cooling unit 101, until the antifreeze 11 overflowing from the exhaust tank 221 is free of bubbles, and only the liquid inlet and liquid outlet of the drain three-way valve 103 are connected to complete the refilling of the thermal management system. This avoids incomplete exhaust of the liquid cooling pipeline, resulting in frequent reports of lack of liquid, unbalanced cooling and heating, loss of battery life, thermal runaway and other extreme consequences.

[0043] Optionally, the rehydration device further includes a gas-liquid separator 4, which is connected in series to the pipeline between the rehydration pump 31 and the liquid cooling unit 101. In this embodiment, the device has added an exhaust groove 221 inside the liquid storage box 21. Whenever the antifreeze 11 overflows from the exhaust groove 221 and falls into the liquid storage tank 211, most of the overflowed antifreeze 11 with bubbles can always be placed at the upper part of the liquid inlet of the rehydration pump 31, which can effectively reduce the air content in the pumped antifreeze 11. However, in order to achieve a more effective degassing effect, it is necessary to add another gas-liquid separator 4 at the rear end of the water pump outlet, which can more effectively make the antifreeze 11 entering the liquid cooling unit 101 basically degassed.

[0044] Optionally, the liquid storage assembly 2 further includes a fixing bracket 23, which is disposed in the liquid storage tank 211 and fixedly connected to the liquid storage box 21, and is used to fix the liquid infusion pump 31. In this embodiment, the fixing bracket 23 is fixed in the liquid storage box 21 by bolts, and the function of the fixing bracket 23 is to fix the liquid infusion pump 31 to reduce the vibration of the liquid infusion pump 31.

[0045] Optionally, the liquid replenishing assembly 3 further includes a ball valve 33, which is disposed on the pipeline between the liquid replenishing pump 31 and the liquid cooling unit 101. In this embodiment, the function of the ball valve 33 is to control the opening and closing of the pipeline between the liquid replenishing pump 31 and the liquid cooling assembly.

[0046] Optionally, the liquid replenishment component 3 further includes a right-angle elbow 34 and a conversion joint 35, and the liquid inlet of the liquid replenishment pump 31 is connected to the right-angle elbow 34 and the conversion joint 35 in sequence, and the conversion joint 35 is connected to the liquid replenishment port of the liquid cooling component. The function of the right-angle elbow 34 is to extend the liquid inlet of the liquid replenishment pump 31 above the notch of the liquid storage tank 211, and the function of the conversion joint 35 is to quickly connect the right-angle elbow 34 with the liquid replenishment port of the liquid cooling component.

[0047] Optionally, the liquid replenishing tube 32 is a transparent tube. In this embodiment, by observing whether the antifreeze liquid 11 in the transparent tube contains bubbles, it can be determined whether the liquid replenishing of the thermal management system can be completed.

[0048] Optionally, the liquid storage assembly 2 further includes two lifting ears 24, and the two lifting ears 24 are respectively fixed to two opposite side walls of the liquid storage box 21. In this embodiment, the two lifting ears 24 can facilitate the staff to carry the liquid storage box 21.

[0049] Optionally, the liquid storage assembly 2 further includes an end cap 25, which is used to close the notch of the liquid storage tank 211. In this embodiment, when the end cap 25 closes the notch of the liquid storage tank 211, it can prevent external dust from entering the liquid storage tank 211.

[0050] Optionally, the fluid replenishing device further comprises a trolley 5, the trolley 5 comprises a body 51 and a handle 52, the antifreeze liquid barrel 1, the liquid storage component 2 and the fluid replenishing component 3 are all arranged on the body 51, and the handle 52 is fixedly connected to the body 51. In this embodiment, the body 51 comprises a support plate and running wheels located at the bottom of the support plate, the handle 52 is fixedly connected to the support plate, the antifreeze liquid barrel 1, the liquid storage component 2 and the fluid replenishing component 3 are all arranged above the support plate, and the staff drags the body 51 to move by the handle 52, thereby realizing the rapid transportation of the antifreeze liquid barrel 1, the liquid storage component 2 and the fluid replenishing component 3, thereby reducing the workload of the staff.

[0051] Optionally, the trolley 5 further includes a fence 53, which is fixed to the vehicle body 51 and surrounds a fixed groove, in which the antifreeze liquid barrel 1 and the liquid storage assembly 2 are both inserted. In this embodiment, when encountering a bumpy road or an accident, the fence 53 can protect the antifreeze liquid 11 in the antifreeze liquid barrel 1 from overflowing, dumping, and the liquid storage assembly 2 from being thrown out and damaged.

[0052] Optionally, the trolley 5 further includes a mounting platform 54, which is fixed to the handle 52. In this embodiment, since the mounting platform 54 is disposed on the handle 52, it is convenient for the staff to operate the control device on the mounting platform 54. Specifically, the control switch of the infusion pump 31 is disposed on the mounting platform 54.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A fluid replenishing device, characterized in that: include: An antifreeze liquid barrel (1) storing antifreeze liquid (11); A liquid storage assembly (2), comprising a liquid storage box (21) and an exhaust box (22), wherein the liquid storage box (21) is provided with a liquid storage tank (211), the exhaust box (22) is arranged in the liquid storage tank (211), and the exhaust box (22) is provided with an exhaust groove (221), and along the vertical direction (Z), the notch of the exhaust groove (221) is lower than the notch of the liquid storage tank (211); A rehydration assembly (3) comprises a rehydration pump (31) and a rehydration tube (32), one end of the rehydration tube (32) being used to communicate with the discharge port of the discharge three-way valve (103) of the thermal management system, and the other end of the rehydration tube (32) extending into the exhaust groove (221), the rehydration pump (31) being arranged in the liquid storage box (21), the liquid inlet of the rehydration pump (31) being lower than the notch of the exhaust groove (221) along the vertical direction (Z), and the liquid outlet of the rehydration pump (31) being used to communicate with the rehydration port of the liquid cooling unit (101).

2. The fluid replenishing device according to claim 1, characterized in that: It also includes a gas-liquid separator (4), which is connected in series to the pipeline between the liquid replenishing pump (31) and the liquid cooling unit (101).

3. The fluid replenishing device according to claim 1, characterized in that: The liquid storage assembly (2) further comprises a fixing bracket (23), wherein the fixing bracket (23) is arranged in the liquid storage tank (211) and is fixedly connected to the liquid storage box (21), and the fixing bracket (23) is used to fix the liquid infusion pump (31).

4. The fluid replenishing device according to claim 1, characterized in that: The liquid replenishing assembly (3) further comprises a ball valve (33), wherein the ball valve (33) is arranged on a pipeline between the liquid replenishing pump (31) and the liquid cooling unit (101).

5. The fluid replenishing device according to claim 1, characterized in that: The liquid infusion tube (32) is a transparent tube.

6. The fluid replenishing device according to claim 1, characterized in that: The liquid storage assembly (2) further comprises two lifting ears (24), and the two lifting ears (24) are respectively fixed to two opposite side walls of the liquid storage box (21).

7. The fluid replenishing device according to claim 1, characterized in that: The liquid storage assembly (2) further comprises an end cover (25), wherein the end cover (25) is used to close the notch of the liquid storage tank (211).

8. The fluid infusion device according to any one of claims 1 to 7, characterized in that: The invention also comprises a trolley (5), wherein the trolley (5) comprises a trolley body (51) and a handle (52), wherein the antifreeze liquid barrel (1), the liquid storage assembly (2) and the liquid replenishing assembly (3) are all arranged on the trolley body (51), and the handle (52) is fixedly connected to the trolley body (51).

9. The fluid replenishing device according to claim 8, characterized in that: The trolley (5) further comprises a fence (53), wherein the fence (53) is fixedly mounted on the vehicle body (51) and is arranged to form a fixed groove, and the antifreeze liquid barrel (1) and the liquid storage assembly (2) are both inserted into the fixed groove.

10. The fluid replenishing device according to claim 9, characterized in that: The trolley (5) further comprises a mounting platform (54), wherein the mounting platform (54) is fixedly mounted on the handle (52).

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