Cooling liquid detection device and cooling system

Abstract

The utility model provides a cooling liquid detection device and a cooling system. The cooling liquid detection device comprises a cooling liquid detection box body and a detection device arranged in the cooling liquid detection box body, the cooling liquid mixing device comprises an inner cavity and an outer cavity, a hollow structure is formed between the inner cavity and the outer cavity, the cooling liquid detection box body is connected with the inner cavity through a connecting channel, and the cooling liquid detection box body is communicated with the outer cavity through a cooling liquid circulating pipeline; and the liquid adding device is connected with the inner cavity. According to the cooling liquid detection device provided by the utility model, the real-time detection of various cooling liquid performances is realized, the sufficient mixing of the cooling liquid is realized through the design of the inner cavity and the outer cavity, the liquid adding device is used for adding cooling liquid components and maintaining the cooling liquid performances, and the detection accuracy and the stable cooling liquid performances are improved through the independent design of the detection box body and the mixing device.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage systems, and in particular relates to a coolant detection device and a cooling system. Background Art

[0002] Liquid cooling technology is a heat dissipation technology that uses liquid to remove heat from batteries. It is used to improve the performance and energy efficiency of energy storage systems. Liquid cooling uses the high thermal conductivity and high heat capacity of liquid to replace air as a heat dissipation medium. Compared with traditional air cooling, liquid cooling has the advantages of low energy consumption and high heat dissipation. It is a key link in solving the heat dissipation pressure and energy-saving challenges of energy storage systems.

[0003] Liquid coolants for energy storage are generally based on antifreeze ethylene glycol and deionized water, with functional additives added, including metal preservatives, antibacterial and bactericides, scale inhibitors, foam inhibitors, and buffers. The addition of these functional additives addresses issues such as metal corrosion and compatibility with non-metallic materials, thereby increasing the lifespan of materials in direct contact with the coolant. However, due to the complex and ever-changing operating environment of energy storage system projects, the coolant can experience corresponding loss and deterioration over long periods of use, leading to changes in coolant performance. In later stages of use, rapid consumption of additives can cause corrosion and deposition in the liquid cooling system, potentially leading to system leakage and thermal runaway. This can result in poor temperature consistency in battery modules and cells, accelerating battery aging and shortening battery life.

[0004] In order to solve the above problems, it is necessary to monitor and maintain the coolant, but frequent replacement of the coolant during the life of the energy storage system will increase the maintenance cost of the energy storage system and the risk of system leakage. Therefore, it is necessary to develop a device that effectively monitors the performance of the coolant to ensure the efficient, safe and reliable operation of the energy storage system. For example, CN220473485U discloses a coolant detection device and a cooling system, wherein the coolant detection device includes a collection box and a detection device installed in the collection box. The device detects the coolant through the detection device of the collection box, and performs coolant maintenance directly in the collection box, which is prone to sudden changes in the composition or concentration of the local coolant, making the detection effect inaccurate, thereby affecting the stability and cooling effect of the entire cooling system. Therefore, it is necessary to provide a device for monitoring the performance of the coolant and improving the maintenance effect of the coolant. Utility Model Content

[0005] The purpose of the utility model is to provide a coolant detection device and a cooling system, which can realize real-time detection, monitoring and maintenance of coolant performance, and ensure the stable operation and cooling effect of the cooling system.

[0006] In order to achieve the purpose of this utility model, the utility model adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a coolant detection device, the coolant detection device comprising:

[0008] A coolant detection box, and a detection device arranged in the coolant detection box;

[0009] A coolant mixing device, the coolant mixing device comprising an inner cavity and an outer cavity, wherein a hollow structure is formed between the inner cavity and the outer cavity, the coolant detection box is connected to the inner cavity via a connecting channel, and the coolant detection box is in communication with the outer cavity via a coolant circulation pipeline;

[0010] A liquid adding device is connected to the inner cavity.

[0011] The coolant detection device provided by the utility model is respectively provided with a coolant detection structure and a coolant mixing structure. The detection device is set by the coolant detection structure to realize real-time detection of various coolant properties, including important parameters such as pH value, temperature, conductivity, turbidity, density, etc. The structural design of the inner and outer cavities of the coolant mixing structure is used to realize full mixing of the coolant. The liquid adding device is used to add antifreeze, composite additives, water and other components lost during the coolant circulation process to maintain the coolant performance. When adding liquid, it is added to the inner cavity and flows out after being fully mixed with the inner and outer cavities to ensure that the coolant composition is uniform. Then, it flows into the detection box for detection through the coolant circulation pipeline. The detection result is reliable and accurate. Through the comprehensive design of the detection box and the mixing device, the timeliness of the feedback of the performance change result is improved. The detection box and the mixing device are independently designed to avoid data mutation caused by simultaneous addition and detection, thereby improving the detection accuracy and the stability of the coolant performance.

[0012] Preferably, a fixing bracket is further provided in the coolant detection box, and the detection device is mounted on the fixing bracket.

[0013] Preferably, the detection device includes any one of a pH electrode, a turbidity electrode, a conductivity electrode, a TDS electrode or a density meter, or a combination of at least two of them.

[0014] Preferably, the coolant detection device includes an anti-backflow valve provided on the connecting channel.

[0015] Preferably, the inner cavity is communicated with the outer cavity through a first liquid outlet, and the outer cavity is communicated with a cooling liquid circulation pipeline through a second liquid outlet.

[0016] Preferably, the height of the connecting channel is higher than the first liquid outlet.

[0017] Preferably, the cross-sectional area of ​​the second liquid outlet is smaller than the cross-sectional area of ​​the first liquid outlet.

[0018] Preferably, the liquid adding device includes a solenoid valve provided on the liquid adding device.

[0019] Preferably, the coolant detection device further comprises a controller, and the controller is communicatively connected to the detection device and the solenoid valve respectively.

[0020] In a second aspect, the present invention provides a cooling system, comprising:

[0021] cooling device;

[0022] The coolant detection device described in the first aspect is connected to the cooling device through a coolant circulation pipeline.

[0023] The present invention also provides a coolant detection method using the coolant detection device, the coolant detection method comprising the following steps:

[0024] The coolant flows into the detection box through the coolant circulation pipeline from the liquid inlet of the coolant detection box body. The coolant gradually fills the detection box. The detection device performs real-time detection on the performance indicators of the coolant and transmits the collected data to the controller. The controller records the change curve of the coolant performance parameters. When the coolant level in the detection box reaches the connecting channel, the coolant flows into the inner cavity of the coolant mixing device through the connecting channel. When the coolant in the inner cavity is full, the coolant flows into the outer cavity through the first liquid outlet and then flows back to the coolant circulation pipeline through the second liquid outlet, forming a cycle.

[0025] The controller predicts the threshold for coolant performance degradation based on the coolant performance parameter change curve and sets a two-level alarm. The first level alarm is the safety threshold, warning that coolant maintenance is required. The second level alarm is the coolant critical value, requiring coolant replacement.

[0026] When the detection device detects that the coolant performance reaches the first level alarm, the controller controls the solenoid valve of the liquid adding device to open. After the required components are added, the controller controls the solenoid valve to close. The coolant after adding is mixed through the inner and outer cavities and flows back into the detection box through the coolant circulation pipeline. The detection device continues to detect the coolant. If it is detected that the performance parameters of the coolant have reached the standard, the liquid addition maintenance is stopped; if it is detected that the performance parameters of the coolant do not reach the standard, the controller controls the solenoid valve to open and add liquid again; until the coolant performance parameters reach the standard, the liquid addition maintenance is stopped.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The coolant detection device provided by the utility model realizes real-time detection of various coolant properties. The structural design of the inner and outer cavities of the coolant mixing structure realizes sufficient mixing of the coolant. The liquid adding device is used to add coolant components to maintain the coolant performance. The independent design of the detection box and the mixing device avoids data mutation caused by simultaneous addition and detection, thereby improving detection accuracy and coolant performance stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic top view of the coolant detection device provided in Example 1;

[0030] Figure 2 This is a schematic front view of the coolant detection device provided in Example 1;

[0031] Figure 3 A schematic diagram of the internal structure of the coolant detection device provided in Example 1;

[0032] Among them: 1-coolant detection box; 11-electrode fixing bracket; 12-detection device; 13-liquid inlet of the coolant detection box; 14-liquid outlet of the coolant detection box; 21-inner cavity; 22-outer cavity; 23-first liquid outlet; 24-second liquid outlet; 3-connecting channel; 4-liquid adding tank; 41-solenoid valve; 5-coolant circulation pipeline; 51-quick-plug liquid inlet connector; 52-quick-plug liquid outlet connector. DETAILED DESCRIPTION

[0033] It should be understood that, in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0034] It should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] Example 1

[0037] This embodiment provides a Figure 1-3 The coolant detection device shown in FIG. 1 includes:

[0038] The coolant detection box 1 is provided with an electrode fixing bracket 11, and the detection device 12 is installed and fixed on the electrode fixing bracket 11. The bottom surface of the coolant detection box is provided with a liquid inlet 13, and the side surface is provided with a liquid outlet 14.

[0039] The detection device 12 includes a pH electrode, a turbidity electrode, a conductivity electrode, a TDS electrode, and a density meter.

[0040] The coolant mixing device includes: an inner cavity 21 and an outer cavity 22, a hollow structure is formed between the inner cavity 21 and the outer cavity 22, a liquid inlet and a first liquid outlet 23 are provided on the side of the inner cavity, and a second liquid outlet 24 is provided on the bottom of the outer cavity.

[0041] The liquid outlet of the coolant detection box 1 is connected to the liquid inlet of the inner cavity 21 through a connecting channel 3. An anti-backflow valve is provided on the connecting channel 3 to prevent the liquid in the inner cavity from flowing back into the detection device.

[0042] The height of the connecting channel 3 from the bottom horizontal plane of the inner cavity 21 is higher than the height of the first liquid outlet 23 from the bottom horizontal plane of the inner cavity 21 .

[0043] The cross-sectional area of ​​the second liquid outlet 24 is smaller than the cross-sectional area of ​​the first liquid outlet 23 .

[0044] A liquid adding tank 4 is provided above the inner cavity 21 . The liquid adding tank 4 is in communication with the inner cavity 21 and adds liquid into the inner cavity 21 . A solenoid valve 41 is provided on the liquid outlet pipe of the liquid adding tank 4 .

[0045] The liquid inlet of the coolant detection box 1 is connected to the coolant circulation pipeline 5 through a quick-insert liquid inlet connector 51 .

[0046] The second liquid outlet 24 of the outer cavity 22 is connected to the coolant circulation pipeline 5 through a quick-insert liquid outlet connector 52 .

[0047] The coolant detection device further includes a controller (not shown in the figure), which is communicatively connected to the detection device and the solenoid valve respectively.

[0048] This embodiment also provides a coolant detection method using the coolant detection device, the coolant detection method comprising the following steps:

[0049] The coolant flows into the coolant detection box 1 from the liquid inlet 14 of the coolant detection box 1 through the coolant circulation pipeline 5. The coolant gradually fills the detection box. The detection device 12 performs real-time detection of the performance indicators of the coolant and transmits the collected data to the controller. The controller records the change curve of the coolant performance parameters. When the coolant level in the coolant detection box 1 reaches the connecting channel 3, the coolant flows from the connecting channel 3 into the inner cavity 21 of the coolant mixing device. When the coolant in the inner cavity 21 is full, the coolant flows into the outer cavity 22 through the first liquid outlet 23 and then flows back to the coolant circulation pipeline 5 through the second liquid outlet 24, forming a cycle.

[0050] The controller predicts the threshold for coolant performance degradation based on the coolant performance parameter change curve and sets a two-level alarm. The first level alarm is the safety threshold, warning that coolant maintenance is required. The second level alarm is the coolant critical value, requiring coolant replacement.

[0051] When the detection device 12 detects that the performance of the coolant reaches the first level alarm, the controller controls the solenoid valve 41 of the liquid adding tank 4 to open. After the required components are added, the controller controls the solenoid valve 14 to close. The coolant after adding is mixed through the inner cavity 21 and the outer cavity 22, and flows back into the coolant detection box 1 through the coolant circulation pipeline 5. The detection device 12 continues to detect the coolant. If it is detected that the performance parameters of the coolant have reached the standard, the liquid addition maintenance is stopped; if it is detected that the performance parameters of the coolant do not reach the standard, the controller controls the solenoid valve to open and add liquid again; until it is detected that the performance parameters of the coolant have reached the standard, the liquid addition maintenance is stopped.

[0052] Comparative Example 1

[0053] This comparative example provides a coolant detection device, which includes:

[0054] The coolant detection box body is provided with an electrode fixing bracket, the detection device is installed and fixed on the electrode fixing bracket, the bottom surface of the coolant detection box body is provided with a liquid inlet, and the side surface is provided with a liquid outlet.

[0055] Detection devices include pH electrodes, turbidity electrodes, conductivity electrodes, TDS electrodes and density meters.

[0056] The liquid adding tank is arranged above the coolant detection box and is connected to the coolant detection box. A solenoid valve is arranged on the liquid outlet pipeline of the liquid adding tank.

[0057] The coolant detection box is connected to the coolant circulation pipeline to form a loop.

[0058] That is, the coolant detection device provided in this comparative example, compared with Example 1, does not include a coolant mixing device, and the liquid adding tank is connected to the coolant detection box.

[0059] The coolant detection device further includes a controller, which is communicatively connected to the detection device and the solenoid valve respectively.

[0060] In this comparative example, the liquid adding tank directly adds coolant components into the detection box. After adding the liquid, the detection device directly performs detection. The coolant components are not fully mixed, the output results of the detection device fluctuate greatly, the liquid addition amount of the liquid adding tank is unstable, and the coolant components fluctuate, affecting the stability of the cooling system and the cooling effect.

[0061] In summary, the coolant detection device provided by the present invention realizes real-time detection of various coolant properties. Through the structural design of the inner and outer cavities of the coolant mixing structure, sufficient mixing of the coolant is achieved. The liquid adding device is used to add coolant components and maintain the coolant performance. Through the independent design of the detection box and the mixing device, data mutations caused by simultaneous addition and detection are avoided, thereby improving the detection accuracy and the stability of the coolant performance.

[0062] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A coolant detection device, characterized in that: The coolant detection device comprises: A coolant detection box, and a detection device arranged in the coolant detection box; A coolant mixing device, the coolant mixing device comprising an inner cavity and an outer cavity, wherein a hollow structure is formed between the inner cavity and the outer cavity, the coolant detection box is connected to the inner cavity via a connecting channel, and the coolant detection box is in communication with the outer cavity via a coolant circulation pipeline; A liquid adding device is connected to the inner cavity.

2. The coolant detection device according to claim 1, characterized in that: A fixing bracket is also provided in the coolant detection box, and the detection device is installed on the fixing bracket.

3. The coolant detection device according to claim 1, characterized in that: The detection device includes any one of a pH electrode, a turbidity electrode, a conductivity electrode, a TDS electrode or a density meter, or a combination of at least two of them.

4. The coolant detection device according to claim 1, characterized in that: The coolant detection device includes an anti-backflow valve arranged on the connecting channel.

5. The coolant detection device according to claim 1, characterized in that: The inner cavity is communicated with the outer cavity through the first liquid outlet, and the outer cavity is communicated with the cooling liquid circulation pipeline through the second liquid outlet.

6. The coolant detection device according to claim 5, characterized in that: The height of the connecting channel is higher than the first liquid outlet.

7. The coolant detection device according to claim 5, characterized in that: The cross-sectional area of ​​the second liquid outlet is smaller than the cross-sectional area of ​​the first liquid outlet.

8. The coolant detection device according to claim 1, characterized in that: The liquid adding device includes a solenoid valve arranged on the liquid adding device.

9. The coolant detection device according to claim 8, characterized in that: The coolant detection device further includes a controller, which is communicatively connected to the detection device and the solenoid valve respectively.

10. A cooling system, characterized in that: The cooling system comprises: cooling device; The coolant detection device according to any one of claims 1 to 9, wherein the coolant detection device is connected to the cooling device through a coolant circulation pipeline.

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