Liquid cooling heat dissipation system

Abstract

The utility model provides a liquid cooling heat dissipation system, and belongs to the technical field of equipment cooling. The liquid cooling heat dissipation system comprises an electric voltage monitoring module, a battery cell temperature monitoring module, a liquid cooling circulation module, a first liquid temperature monitoring module, a second liquid temperature monitoring module and a central control module, the central control module is connected with the voltage monitoring module, the cell temperature monitoring module, the liquid cooling circulation module, the first liquid temperature monitoring module and the second liquid temperature monitoring module. The voltage monitoring module is configured to monitor the voltage of the cylindrical battery cell; the battery cell temperature monitoring module is configured to monitor the temperature of the cylindrical battery cell, and the liquid cooling circulation module is configured to dissipate heat of the cylindrical battery cell; the first liquid temperature monitoring module is arranged at the input end of the liquid cooling circulation module, and the second liquid temperature monitoring module is arranged at the output end of the liquid cooling circulation module. The problem that a traditional liquid cooling system is poor in heat dissipation effect can be solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of equipment cooling, and in particular to a liquid cooling system. Background Art

[0002] Cylindrical battery cells are widely used in today's electronic devices, energy storage devices, and other fields. However, existing heat dissipation technologies have many shortcomings. Traditional air cooling has limited heat dissipation efficiency, especially in high-power, high-heat density scenarios, and it is difficult to meet heat dissipation requirements. Some simple liquid cooling systems often suffer from insufficient contact between the coolant and the battery cell and poor temperature uniformity, resulting in poor heat dissipation. This not only affects the performance of the battery cell, but also causes localized aging of the battery cell due to uneven temperature, shortening the battery cell's service life. Utility Model Content

[0003] The embodiments of the present disclosure provide a liquid cooling system to solve the problem of poor heat dissipation effect of traditional liquid cooling systems.

[0004] The embodiment of the present disclosure provides a liquid cooling and heat dissipation system, comprising: a voltage monitoring module, a battery core temperature monitoring module, a liquid cooling circulation module, a first liquid temperature monitoring module, a second liquid temperature monitoring module and a central control module;

[0005] The central control module is connected to the voltage monitoring module, the battery cell temperature monitoring module, the liquid cooling circulation module, the first liquid temperature monitoring module and the second liquid temperature monitoring module respectively; the voltage monitoring module is configured to monitor the voltage of the cylindrical battery cell; the battery cell temperature monitoring module is configured to monitor the temperature of the cylindrical battery cell, and the liquid cooling circulation module is configured to dissipate heat from the cylindrical battery cell;

[0006] The first liquid temperature monitoring module is arranged at the input end of the liquid cooling circulation module, and the second liquid temperature monitoring module is arranged at the output end of the liquid cooling circulation module; the first liquid temperature monitoring module and the second liquid temperature monitoring module are both configured to monitor the temperature of the coolant in the liquid cooling circulation module.

[0007] In an exemplary embodiment of the present disclosure, a liquid cooling circulation module includes:

[0008] Liquid cooling circulation pipe and radiator; the liquid cooling circulation pipe surrounds the surface of the cylindrical battery cell;

[0009] The output end of the liquid cooling circulation pipeline is connected to the input end of the radiator, and the input end of the liquid cooling circulation pipeline is connected to the output end of the radiator;

[0010] The first liquid temperature monitoring module is arranged at the input end of the radiator, and the second liquid temperature monitoring module is arranged at the output end of the radiator.

[0011] In an exemplary embodiment of the present disclosure, the liquid cooling circulation module further includes:

[0012] Flow control valve and liquid cooling circulation pump;

[0013] The flow regulating valve is arranged at the input end of the liquid cooling circulation pipeline;

[0014] The liquid cooling circulation pump is arranged at the output end of the radiator.

[0015] In an exemplary embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0016] The third liquid temperature monitoring module;

[0017] The third liquid temperature monitoring module is connected to the central control module;

[0018] The third liquid temperature monitoring module includes multiple temperature sensors, which are arranged at pipeline positions between the input end and the output end of different liquid cooling circulation pipelines and are configured to monitor the temperature of the coolant in the liquid cooling circulation pipelines.

[0019] In an exemplary embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0020] Early warning module and communication module;

[0021] The early warning module and the communication module are both connected to the central control module.

[0022] In an exemplary embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0023] Display module;

[0024] The display module is connected to the central control module.

[0025] In an exemplary embodiment of the present disclosure, a battery cell temperature monitoring module includes:

[0026] Multiple temperature sensors, multiple temperature sensors are set on different cylindrical battery cells;

[0027] Each temperature sensor is configured to monitor the temperature of a corresponding cylindrical battery cell.

[0028] The beneficial effects of the liquid cooling and heat dissipation system provided by the embodiments of the present disclosure are:

[0029] On the one hand, the disclosed embodiments can precisely locate high-temperature areas by monitoring temperature changes in different parts of the battery cell through the battery cell temperature monitoring module. This allows for targeted cooling during heat dissipation, avoiding resource waste caused by indiscriminate heat dissipation, effectively improving heat dissipation efficiency, making the overall battery cell temperature more uniform, and extending the battery cell's service life.

[0030] On the other hand, the voltage monitoring module monitors the voltage changes of the battery cells in real time to determine the charging and discharging conditions, predicts the temperature change trends of the battery cells in advance, and controls the liquid cooling circulation module in advance to prepare for heat dissipation and cooling operations. The first and second liquid temperature monitoring modules can provide information on coolant temperature changes to evaluate the heat dissipation effect. Based on a comprehensive analysis of this information, the central control module can precisely control the liquid cooling circulation module, such as adjusting the coolant flow rate and flow rate in a timely manner. This allows the liquid cooling system to be dynamically optimized according to actual conditions, maintaining optimal heat dissipation under different operating conditions, ensuring that the battery cells operate in a suitable temperature environment, and extending the service life of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 Schematic diagram of a liquid cooling system according to an embodiment of the present disclosure;

[0033] Figure 2 It is a structural schematic diagram of another liquid cooling and heat dissipation system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.

[0035] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.

[0036] The following describes the implementation of the present disclosure in detail with reference to the accompanying drawings:

[0037] Figure 1 This is a schematic diagram of the structure of a liquid cooling system provided by an embodiment of the present disclosure. Figure 1, a liquid cooling and heat dissipation system includes: a voltage monitoring module 101, a battery core temperature monitoring module 102, a liquid cooling circulation module 103, a first liquid temperature monitoring module 104, a second liquid temperature monitoring module 105 and a central control module 106;

[0038] The central control module 106 is connected to the voltage monitoring module 101, the battery cell temperature monitoring module, the liquid cooling circulation module 103, the first liquid temperature monitoring module 104, and the second liquid temperature monitoring module 105 respectively; the voltage monitoring module 101 is configured to monitor the voltage of the cylindrical battery cell; the battery cell temperature monitoring module is configured to monitor the temperature of the cylindrical battery cell, and the liquid cooling circulation module 103 is configured to dissipate heat from the cylindrical battery cell;

[0039] The first liquid temperature monitoring module 104 is set at the input end of the liquid cooling circulation module 103, and the second liquid temperature monitoring module 105 is set at the output end of the liquid cooling circulation module 103; the first liquid temperature monitoring module 104 and the second liquid temperature monitoring module 105 are both configured to monitor the temperature of the coolant in the liquid cooling circulation module 103.

[0040] In this embodiment, the battery cell temperature monitoring module 102 collects temperature data of various positions of the battery cell in real time through temperature sensors distributed at different positions of the battery cell. These temperature data can reflect the distribution of the surface temperature of the battery cell, thereby identifying the high temperature area.

[0041] The voltage monitoring module 101 continuously monitors the voltage of the cylindrical battery cell. Since there is a certain correlation between the voltage and temperature of the battery cell during the charging and discharging process, the temperature change trend of the battery cell can be estimated through real-time voltage data.

[0042] The first liquid temperature monitoring module 104 and the second liquid temperature monitoring module 105 respectively monitor the temperature of the coolant at the input and output ends of the liquid cooling circulation module 103. By comparing the temperatures at these two locations, the heat absorption of the coolant during its flow through the battery cells can be understood.

[0043] The central control module 106 receives information collected by each of the aforementioned modules. Regarding battery cell temperature information, it determines the location and temperature level of high-temperature areas; predicts the changing trend of battery cell temperature based on voltage; and, based on the temperature difference between the coolant inlet and outlet, evaluates the current heat dissipation efficiency of the liquid cooling circulation module 103. Based on the results of this comprehensive analysis, the central control module 106 controls and regulates the liquid cooling circulation module 103. If the temperature of a battery cell area is greater than or equal to the safety temperature threshold (i.e., the temperature is too high), the central control module 106 controls the liquid cooling circulation module 103 to increase the coolant flow rate or adjust the coolant flow rate corresponding to that area to achieve targeted cooling. If voltage changes indicate that the battery cell temperature is about to rise, the central control module 106 preemptively adjusts the operating parameters of the liquid cooling circulation module 103 to prepare for heat dissipation. Operating parameters may include coolant flow rate, coolant flow rate, and coolant circulation time.

[0044] For example, the liquid cooling circulation module 103 may include components such as a liquid cooling circulation pump, multiple liquid cooling pipes, and a radiator 108. The liquid cooling circulation pump can precisely adjust the flow rate and flow velocity according to the instructions of the central control module 106; the cooling fins of the radiator 108 are optimized to improve heat dissipation efficiency.

[0045] For example, there's a time delay between changes in battery cell temperature and voltage. For example, during charging, the battery cell's temperature gradually rises only after its voltage rises. By monitoring the voltage, the temperature trend can be estimated in advance, allowing the liquid cooling module 103 to be prepared in advance. When the temperature begins to rise, the liquid cooling module 103 is already in optimal working condition, able to quickly transfer heat and prevent overheating from damaging the battery cells.

[0046] For example, the operating environment and load conditions of the battery cells are constantly changing. Under different operating conditions, the heating conditions of the battery cells vary, and the heat dissipation requirements are also different. For example, during the acceleration of an electric vehicle, the load on the battery cells increases rapidly, and the battery cell temperature rises rapidly; while during constant speed driving, the heating of the battery cells is relatively stable. By monitoring the coolant temperature, battery cell temperature, and voltage data in real time and dynamically adjusting the operating parameters of the liquid cooling circulation module 103, it is possible to ensure that the battery cells can obtain appropriate heat dissipation under various operating conditions and maintain a suitable temperature environment.

[0047] For example, in a large-scale energy storage power station, energy storage batteries generate a large amount of heat during the charging and discharging process. In the hot summer, the ambient temperature is high, and the heat dissipation burden of the energy storage batteries is heavy. Through this embodiment, the voltage monitoring module 101 monitors the battery cell voltage in real time. When it is found that the voltage rises abnormally during the charging process, it indicates that the temperature will rise. The central control module 106 generates corresponding control instructions to increase the power of the liquid cooling circulation pump and increase the coolant flow rate and flow. At the same time, the battery cell temperature monitoring module finds that the temperature of some battery cell areas exceeds the safety threshold, and the central control module 106 adjusts the flow of the corresponding liquid cooling pipe to enhance heat dissipation.

[0048] For example, if the first and second liquid temperature monitoring modules 104 and 105 detect a decrease in the coolant inlet and outlet temperature difference, indicating a decrease in heat dissipation, the central control module 106 immediately adjusts the liquid cooling circulation module 103 to increase the coolant flow rate and activates the backup cooling fan to enhance heat dissipation.

[0049] For example, when charging at night, due to the lower ambient temperature and relatively small charging power, the battery cell temperature is low. The central control module 106 reduces the coolant flow and the radiator 108 fan speed based on real-time monitoring data to save energy, while ensuring that the energy storage battery operates at an appropriate temperature, thereby improving the efficiency and safety of the energy storage system.

[0050] This embodiment adds voltage monitoring of the battery cell and temperature monitoring of the coolant on the basis of monitoring the battery cell temperature. The voltage monitoring module 101 can grasp the voltage change of the battery cell in real time, and then judge the charge and discharge status of the battery cell. The battery cell temperature monitoring module 102 can comprehensively monitor the temperature change information of different parts of the battery cell, grasp the temperature distribution of the battery cell, and then provide a data basis for targeted cooling of the battery cell. Through the setting of the first liquid temperature monitoring module 104 and the second liquid temperature monitoring module 105, the temperature change information of the coolant can be grasped in time, and the heat dissipation effect of the liquid cooling circulation module 103 can be evaluated, providing a data basis for precise control of heat dissipation.

[0051] On the one hand, this embodiment can precisely locate high-temperature areas by monitoring the temperature changes of different parts of the battery cell through the battery cell temperature monitoring module 102. Targeted cooling can be performed during heat dissipation, avoiding resource waste caused by indiscriminate heat dissipation, effectively improving heat dissipation efficiency, making the overall temperature of the battery cell more uniform, and extending the battery cell life.

[0052] On the other hand, this embodiment uses the voltage monitoring module 101 to grasp the battery cell voltage changes in real time and then judge the charging and discharging conditions, estimate the temperature change trend of the battery cell in advance, and control the liquid cooling circulation module 103 in advance to prepare for heat dissipation and cooling operations. The first liquid temperature monitoring module 104 and the second liquid temperature monitoring module 105 can provide coolant temperature change information to evaluate the heat dissipation effect. Based on the comprehensive analysis of this information, the central control module 106 can accurately control the liquid cooling circulation module 103, such as adjusting the coolant flow rate, flow rate, etc. in a timely manner. This enables the liquid cooling heat dissipation system to be dynamically optimized according to actual conditions, maintain the best heat dissipation state under different working conditions, ensure that the battery cell operates in a suitable temperature environment, and extend the service life of the battery cell.

[0053] like Figure 2 As shown, in one embodiment of the present disclosure, the liquid cooling circulation module 103 includes:

[0054] Liquid cooling circulation pipe 107 and radiator 108; Liquid cooling circulation pipe 107 surrounds the surface of the cylindrical battery core;

[0055] The output end of the liquid cooling circulation pipe 107 is connected to the input end of the radiator 108, and the input end of the liquid cooling circulation pipe 107 is connected to the output end of the radiator 108;

[0056] The first liquid temperature monitoring module 104 is disposed at the input end of the radiator 108 , and the second liquid temperature monitoring module 105 is disposed at the output end of the radiator 108 .

[0057] In this embodiment, the cylindrical battery cell generates heat during operation. Since the liquid cooling circulation pipe 107 surrounds the surface of the cylindrical battery cell, the heat of the battery cell will be transferred to the coolant in the pipe. The coolant after absorbing the heat flows out from the output end of the liquid cooling circulation pipe 107 and flows to the input end of the radiator 108. In the radiator 108, the coolant transfers the heat to the radiator 108, and exchanges heat with the external environment through the cooling fins of the radiator 108, thereby reducing its own temperature. The cooled coolant flows out from the output end of the radiator 108, and then returns to the circulation pipe through the input end of the liquid cooling circulation pipe 107, and continues to circulate to take away the heat generated by the battery cell.

[0058] The first liquid temperature monitoring module 104 monitors the temperature of the coolant before it enters the radiator 108 at the input end, and the second liquid temperature monitoring module 105 monitors the temperature of the coolant after it flows out of the radiator 108 at the output end. The difference between these two temperatures can be used to understand the heat dissipation efficiency of the radiator 108.

[0059] For example, core components such as the CPU in a server generate a large amount of heat during operation. A cylindrical heat dissipation module (similar in structure to a cylindrical battery cell) is used in conjunction with the liquid cooling circulation module 103. During high-load operation, the first liquid temperature monitoring module 104 detects that the temperature of the coolant entering the radiator 108 reaches 45°C. After heat dissipation by the radiator 108, the second liquid temperature monitoring module 105 detects that the temperature of the coolant exiting the radiator 108 drops to 35°C. This difference in temperature is 10°C, indicating that the radiator 108 is achieving the desired heat dissipation effect.

[0060] If the ambient temperature of the data center rises or the server load further increases, resulting in a decrease in heat dissipation efficiency, the operating parameters of the liquid cooling circulation module 103 can be adjusted in time by monitoring the changes in the temperature difference, such as increasing the flow rate of the coolant or increasing the fan speed of the radiator 108, to ensure that the server operates at an appropriate temperature and avoid performance degradation or failure due to overheating.

[0061] In this embodiment, there may be multiple liquid cooling circulation pipes 107, and the liquid cooling circulation pipes 107 are designed to tightly surround the cylindrical battery core, and may include a spiral or multi-layer surrounding structure to increase the contact area with the battery core and achieve full coverage of the cylindrical battery core.

[0062] For example, a plurality of liquid cooling circulation pipes 107 can be provided according to the number, size and heat dissipation requirements of the cylindrical battery cells. A liquid cooling circulation pipe 107 can be provided for each cylindrical battery cell. If the cylindrical battery cell is larger in size or the heat dissipation requirement is higher, 1-2 liquid cooling circulation pipes 107 can be added. Multiple pipes can improve the efficiency of heat absorption and transfer. The liquid cooling circulation pipe 107 can surround the surface of the cylindrical battery cell in a spiral manner. Starting from one end of the cylindrical battery cell, the pipe is evenly wound around the battery cell, and a certain distance is maintained between adjacent spiral turns, such as 2-5 mm, to ensure that the coolant fully contacts the surface of the battery cell during the flow process and absorbs heat evenly.

[0063] Alternatively, multiple liquid cooling circulation pipes 107 can be arranged in layers. For example, a layer of spiral pipes can be placed on a cylindrical battery cell, and then another layer of pipes can be placed a certain distance (e.g., 5-10 mm) above it. This allows heat to be absorbed and transferred from different depths of the battery cell, further improving the heat dissipation effect.

[0064] The liquid cooling circulation module 103 designed in this embodiment significantly improves the heat dissipation efficiency and stability of the cylindrical battery cells. The liquid cooling circulation pipe 107 structure tightly surrounds the battery cells, achieving efficient absorption and transfer of heat. The multi-layer surrounding or spiral pipe layout increases the contact area with the battery cells, ensuring that heat is evenly and quickly absorbed by the coolant. At the same time, the application of two liquid temperature monitoring modules provides real-time feedback on the temperature difference of the coolant, providing an accurate basis for timely adjustment of the heat dissipation strategy, ensuring that the battery cells can still operate stably under high load or harsh environment, and effectively avoiding performance degradation or failure caused by overheating.

[0065] In one embodiment of the present disclosure, the liquid cooling circulation module 103 further includes:

[0066] Flow control valve and liquid cooling circulation pump;

[0067] The flow regulating valve is provided at the input end of the liquid cooling circulation pipe 107;

[0068] The liquid cooling circulation pump is provided at the output end of the radiator 108 .

[0069] In this embodiment, the input and output of radiator 108 are determined by the direction of coolant flow. The end where coolant flows into the radiator is the input end of radiator 108, and the end where coolant flows out of radiator 108 is the output end of radiator 108. The number of flow control valves is the same as or slightly greater than the number of liquid cooling circulation pipes 107. For example, if there are four liquid cooling circulation pipes 107, four to six flow control valves can be installed, with one to two valves per pipe.

[0070] In this embodiment, the liquid cooling circulation pump serves as the power source of the liquid cooling circulation module 103 and starts working after being powered on. Its motor drives the impeller to rotate at high speed, providing power for the flow of the coolant. Driven by the liquid cooling circulation pump, the coolant flows out of the radiator 108. The radiator 108 cools the coolant, reducing its temperature to a preset state suitable for absorbing heat. The cooled coolant is pumped out by the liquid cooling circulation pump and pushed along the liquid cooling circulation pipe 107. During the flow of the coolant in the pipe, it passes around the cylindrical battery cells and exchanges heat with the cylindrical battery cells. The heat generated by the cylindrical battery cells during operation is transferred to the coolant, causing the temperature of the coolant to increase. The coolant that has absorbed the heat of the cylindrical battery cells continues to flow back to the radiator 108 under the push of the liquid cooling circulation pump. In the radiator, the high-temperature coolant exchanges heat with the external environment, dissipating heat to the external environment, and the temperature of the coolant is reduced again, completing a complete liquid cooling cycle process. This cycle continues to take away the heat generated by the cylindrical battery cells, thereby achieving heat dissipation for the cylindrical battery cells.

[0071] For example, the liquid cooling circulation pump can be provided at a certain section of the liquid cooling circulation pipe 107, for example, near the output end of the radiator 108. The coolant cooled by the radiator 108 can be transported back to the liquid cooling circulation pipe 107 by the liquid cooling circulation pump to start the next round of heat dissipation cycle.

[0072] This embodiment achieves precise control of the coolant flow rate through the provision of a flow regulating valve and a liquid cooling circulation pump, thereby optimizing heat dissipation efficiency, effectively reducing the operating temperature of the equipment, extending the service life of the equipment, and improving the stability of equipment operation.

[0073] like Figure 2 As shown, in one embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0074] The third liquid temperature monitoring module 109;

[0075] The third liquid temperature monitoring module 109 is connected to the central control module 106;

[0076] The third liquid temperature monitoring module 109 includes a plurality of temperature sensors, which are arranged at different pipe positions between the input end and the output end of the liquid cooling circulation pipe and are configured to monitor the temperature of the coolant in the liquid cooling circulation pipe 107 .

[0077] In this embodiment, the number of temperature sensors can be set according to the number, length and complexity of the liquid-cooling circulation pipes 107. A temperature sensor is set at the middle section of each liquid-cooling circulation pipe 107. The temperature sensor can be set near the contact area between the liquid-cooling circulation pipe 107 and the cylindrical battery cell, so as to more accurately monitor the temperature change after the coolant absorbs the heat of the battery cell. For example, for a spiral liquid-cooling circulation pipe 107, a temperature sensor can be set in the middle position of each spiral; for a liquid-cooling circulation pipe 107 with a multi-layer surrounding structure, a temperature sensor can be set in the middle position of each layer of liquid-cooling circulation pipe 107 and on one side close to the battery cell. The installation method can be threaded connection, clamp fixation or gluing, etc., to ensure that the temperature sensor is in close contact with the liquid-cooling circulation pipe 107 and does not affect the flow of the coolant.

[0078] In a cylindrical electric vehicle battery pack, multiple temperature sensors monitor the coolant temperature in the liquid cooling circulation pipe 107 in real time while the vehicle is driving or charging. If a temperature sensor detects an abnormally high temperature, the central control module determines that the battery cells in that area are generating excessive heat or the pipe is clogged. For example, if a temperature sensor detects a temperature of 45°C, higher than temperatures elsewhere, the central control module 106 can adjust the liquid cooling circulation pump to increase the coolant flow in that area or check for blockages in the pipe to ensure proper heat dissipation from the battery pack, thereby improving battery safety and service life.

[0079] In this embodiment, the third liquid temperature monitoring module 109 monitors the coolant temperature in the liquid cooling circulation pipeline 107 in real time to ensure the heat dissipation efficiency of the battery pack. The presence of multiple temperature sensors allows for timely detection of coolant temperature changes and anomalies. Central control module 106 then adjusts the coolant flow rate or checks the pipeline condition accordingly, effectively preventing overheating of the battery cells, ensuring battery safety, and extending battery life.

[0080] like Figure 2 As shown, in one embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0081] Early warning module 110 and communication module 111;

[0082] The early warning module 110 and the communication module 111 are both connected to the central control module 106 .

[0083] In this embodiment, the central control module 106 receives data from various monitoring modules (such as the battery cell temperature monitoring module 102, the liquid temperature monitoring module, and the voltage monitoring module 101). When this data indicates an abnormality, such as a battery cell temperature exceeding a set safety threshold or a coolant temperature difference exceeding a normal range, the central control module 106 generates a corresponding warning signal and transmits it to the warning module 110 or to an external terminal via the communication module 111. Upon receiving the warning signal from the central control module 106, the warning module 110 issues an alarm through sound (such as a buzzer alarm), light (such as a flashing red indicator light), or a pop-up warning message on the relevant device interface, alerting personnel.

[0084] Upon receiving the warning signal, the communication module 111 transmits the warning information and related system data (such as current battery cell temperature, coolant temperature, and operating parameters) to a remote monitoring center or to a mobile terminal (such as a mobile phone or tablet) used by relevant personnel. This allows personnel to promptly learn of equipment abnormalities even if they are not at the equipment site.

[0085] This embodiment significantly enhances the device's security monitoring and remote management capabilities by integrating the early warning module 110 with the communication module 111. This embodiment can immediately detect and respond to abnormal situations, effectively preventing escalation of faults and ensuring the stable operation of the liquid cooling system. Furthermore, the remote communication function ensures the instantaneous transmission of information, allowing personnel to quickly monitor the status of the liquid cooling system and battery cells regardless of their location and respond quickly, significantly improving maintenance efficiency and safety.

[0086] like Figure 2 As shown, in one embodiment of the present disclosure, a liquid cooling heat dissipation system further includes:

[0087] Display module 112;

[0088] The display module 112 is connected to the central control module 106 .

[0089] In this embodiment, the central control module 106 integrates and processes the data collected from various submodules (such as the cell temperature monitoring module 102, the coolant temperature monitoring module, and the voltage monitoring module 101). This data may include relevant parameters such as the real-time temperature of the cylindrical cell, the coolant temperature, and the cell voltage. The processed information is transmitted to the connected display module 112. After receiving the data, the display module 112 displays this data in an intuitive manner. For example, the display screen can display information such as cell temperature curves, real-time coolant temperature values, and voltage fluctuations in various formats, including numbers, charts, or graphs.

[0090] For example, cylindrical cells generate heat during vehicle operation and charging. Display module 112 can display the temperature of each cylindrical cell in the battery pack in real time, such as when some cells are 35°C and some are 38°C, and simultaneously display the coolant inlet and outlet temperatures of 30°C and 40°C, respectively, as well as information such as the cell voltage.

[0091] This embodiment uses the display module 112 to present key operating data, such as cell temperature, coolant temperature, and voltage, in an intuitive, real-time manner, providing operators with comprehensive, immediate equipment status monitoring. This not only enhances system transparency and manageability, but also facilitates rapid fault diagnosis and prevention, ensuring safe and efficient operation of electric vehicles, and improving user experience and overall system reliability.

[0092] like Figure 2 As shown, in one embodiment of the present disclosure, the battery cell temperature monitoring module includes:

[0093] Multiple temperature sensors, multiple temperature sensors are set on different cylindrical battery cells;

[0094] Each temperature sensor is configured to monitor the temperature of a corresponding cylindrical battery cell.

[0095] In this embodiment, a temperature sensor is provided on each cylindrical battery core, and the position of the temperature sensor may be consistent with the position of the temperature sensor provided in the middle section of the liquid cooling circulation pipe 107 .

[0096] For example, the battery pack of an electric vehicle is composed of multiple cylindrical battery cells. Each cylindrical battery cell is equipped with a temperature sensor. When the vehicle is driving or charging, the temperature sensor monitors the temperature of the battery cell in real time. If the temperature sensor of a battery cell detects that the temperature is too high, for example, reaching 50°C, which exceeds the battery cell temperature safety threshold, the vehicle's central control system will sound an alarm to alert the driver. At the same time, the central control module can adjust the parameters of the liquid cooling system by controlling, such as increasing the coolant flow rate or flow rate, to carry out targeted heat dissipation of the battery cell to prevent overheating and damage to the battery cell, thereby ensuring the safe operation of the vehicle and the service life of the battery.

[0097] On the one hand, this embodiment can directly establish a corresponding relationship between the temperature of the cylindrical battery cell and the temperature of the coolant at key locations. By comparing the temperatures at these two locations, the coolant's heat dissipation effect on the battery cell can be more accurately determined. For example, when the battery cell temperature sensor indicates an increase in temperature, combined with the data from the temperature sensor in the middle section of the liquid cooling circulation pipeline, it can be quickly determined whether the high coolant temperature itself is causing poor heat dissipation, or whether insufficient coolant flow at that location is the cause.

[0098] On the other hand, when an anomaly occurs, it helps quickly locate the problem. If the temperature of a battery cell rises abnormally, but the coolant temperature in the middle section of the corresponding liquid cooling circulation pipe does not change significantly, it can be preliminarily determined that there is a problem with heat transfer between the battery cell and the coolant. This may be due to poor contact between the battery cell surface and the pipe, or a faulty temperature sensor at that location, greatly improving troubleshooting efficiency.

[0099] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A liquid cooling system, characterized in that: include: Voltage monitoring module, battery cell temperature monitoring module, liquid cooling circulation module, first liquid temperature monitoring module, second liquid temperature monitoring module and central control module; The central control module is respectively connected to the voltage monitoring module, the battery cell temperature monitoring module, the liquid cooling circulation module, the first liquid temperature monitoring module and the second liquid temperature monitoring module; the voltage monitoring module is configured to monitor the voltage of the cylindrical battery cell; the battery cell temperature monitoring module is configured to monitor the temperature of the cylindrical battery cell, and the liquid cooling circulation module is configured to dissipate heat for the cylindrical battery cell; The first liquid temperature monitoring module is provided at the input end of the liquid cooling circulation module, and the second liquid temperature monitoring module is provided at the output end of the liquid cooling circulation module; The first liquid temperature monitoring module and the second liquid temperature monitoring module are both configured to monitor the temperature of the coolant in the liquid cooling circulation module.

2. The liquid cooling system according to claim 1, wherein: The liquid cooling circulation module comprises: Liquid cooling circulation pipe and radiator; the liquid cooling circulation pipe surrounds the surface of the cylindrical battery core; The output end of the liquid cooling circulation pipe is connected to the input end of the radiator, and the input end of the liquid cooling circulation pipe is connected to the output end of the radiator; The first liquid temperature monitoring module is arranged at the input end of the radiator, and the second liquid temperature monitoring module is arranged at the output end of the radiator.

3. The liquid cooling system according to claim 2, wherein: The liquid cooling circulation module further includes: Flow control valve and liquid cooling circulation pump; The flow regulating valve is arranged at the input end of the liquid cooling circulation pipeline; The liquid cooling circulation pump is arranged at the output end of the radiator.

4. The liquid cooling system according to claim 2, wherein: Also includes: The third liquid temperature monitoring module; The third liquid temperature monitoring module is connected to the central control module; The third liquid temperature monitoring module includes a plurality of temperature sensors, which are arranged at pipeline positions between the input end and the output end of different liquid cooling circulation pipelines and are configured to monitor the temperature of the coolant in the liquid cooling circulation pipelines.

5. The liquid cooling system according to claim 1, wherein: Also includes: Early warning module and communication module; The early warning module and the communication module are both connected to the central control module.

6. The liquid cooling system according to claim 1, wherein: Also includes: Display module; The display module is connected to the central control module.

7. The liquid cooling system according to claim 1, wherein: The battery cell temperature monitoring module includes: A plurality of temperature sensors, wherein the plurality of temperature sensors are arranged on different cylindrical battery cells; Each temperature sensor is configured to monitor the temperature of a corresponding cylindrical battery cell.

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