Liquid cooling flow detection method and liquid cooling interaction control system

Abstract

The invention relates to a liquid cooling flow detection method and a liquid cooling interaction control system, and the method comprises the steps: driving a liquid cooling interaction system to work to enable a cooling liquid to start to circulate under the condition that the liquid cooling interaction system and a target vehicle end construct a circulation loop; acquiring flow data of the cooling liquid at each section of the circulation loop; and the liquid leakage state of the circulation loop is determined according to the flow data of all the sections. By adopting the method, the problem that the liquid cooling interaction process of the charging pile and the automobile is difficult to detect can be solved.

Description

Technical Field

[0001] The present application relates to the field of liquid cooling interaction, and in particular to a liquid cooling flow detection method and a liquid cooling interaction control system. Background Art

[0002] With the development of new energy vehicles, the new energy vehicle industry has higher requirements for charging speed. From a few kilowatts of AC piles to hundreds of kilowatts of DC piles, the demand for charging speed is increasing day by day, and the heating problem caused by excessive power has also become prominent. At present, there are liquid-cooled super-charging piles, and the heat dissipation problem at the pile end has been solved, but the heat dissipation problem at the vehicle end is limited by the layout space and the heat dissipation of the whole vehicle, which makes it impossible to effectively solve it. For the same charging power, the higher the battery power, the higher the battery temperature. In order to prevent safety problems caused by high temperature, the charging rate will be greatly reduced after the battery capacity reaches 80%, ensuring that the battery temperature is within a safe range. In order to solve the above problems and break through the limit of only 80% of the fast charging strategy, the relevant technology proposes a method of providing coolant from the pile end to the vehicle end for heat dissipation, and provides corresponding interfaces, such as a separate liquid cooling interaction interface, a liquid cooling interaction interface combined with a charging gun, etc. However, the relevant technology only considers the high-temperature heat dissipation problem caused by the excessively fast charging rate of new energy vehicles, but does not focus on solving the derivative problems of the liquid cooling interaction control system, resulting in a lack of monitoring and detection of the liquid cooling interaction process between the charging pile and the car.

[0003] With regard to the problem in related technologies that it is difficult to detect the liquid cooling interaction process between the charging pile and the car, no effective solution has been proposed so far. Summary of the invention

[0004] Based on this, it is necessary to provide a liquid cooling flow detection method and a liquid cooling interaction control system that can solve the problem of detecting the liquid cooling interaction process between the charging pile and the car in response to the above technical problems.

[0005] In a first aspect, a liquid cooling flow detection method is provided in this embodiment, and the method includes: When a circulation loop is formed between the liquid cooling interactive system and the target vehicle end, the liquid cooling interactive system is driven to operate so that the coolant starts to circulate; Acquiring flow data of the coolant at each segment of the circulation loop; The leakage state of the circulation loop is determined according to the flow data at each segment.

[0006] In some embodiments, the liquid cooling interactive system includes a circulation pump, a cold plate and a heating plate of the cooling liquid, and driving the liquid cooling interactive system to work so that the cooling liquid starts to circulate includes: Acquiring temperature information of the target vehicle end; Obtaining the operating power of the cold plate or the operating power of the heating plate according to the temperature information; The circulation pump is driven to operate so that the coolant circulates in the circulation loop, and the corresponding cold plate or the heating plate is driven to operate according to the operating power.

[0007] In some of the embodiments, obtaining the leakage state of the liquid-cooling interactive system according to the flow data at each segment includes: Determine the pulse signal corresponding to each flow data and the operating power of the liquid cooling interactive system when each pulse signal is generated, wherein the pulse signal is associated with the flow size of the coolant; Compensating the generation time of the pulse signal according to the operating power; If a specified number of abnormal pulse signals with abnormal frequencies exist in the pulse signals, it is determined that there is leakage in the circulation loop.

[0008] In some embodiments, if there are a specified number of abnormal pulse signals with abnormal frequencies in the pulse signals, then it is determined that there is leakage in the circulation loop, including: In the pulse signal, if the abnormal pulse signal exists and the frequency of the abnormal pulse signal is greater than or equal to a preset value, then when it is determined that the intervals between the abnormal pulse signals are consistent, it is determined that there is leakage in the circulation loop.

[0009] In some embodiments, the step of obtaining flow data at each segment of the cooling liquid circulation loop includes: The flow rate data of the coolant in the pipeline that transports the coolant from the bottom to the top is obtained.

[0010] In some embodiments, after determining the leakage state of the circulation loop according to the flow data at each segment, the method further includes: According to the flow data, the outflow flow rate of the cooling liquid during the liquid cooling interaction and the recovery flow rate of the cooling liquid after the liquid cooling interaction are obtained; According to the liquid outlet flow rate and the recovery flow rate, the coolant loss during the liquid cooling interaction process is output.

[0011] In some embodiments, during the liquid cooling interaction, the liquid outlet interface and the liquid return interface of the coolant are connected to the target vehicle end, and after the liquid cooling interaction, the coolant recovery interface is connected to the target vehicle end; the method of obtaining the liquid outlet flow rate of the coolant during the liquid cooling interaction and the recovery flow rate of the coolant after the liquid cooling interaction according to the flow data includes: The liquid outlet flow rate is obtained according to flow data detected by the liquid outlet interface and / or the liquid return interface when the target vehicle end is connected to the liquid outlet interface and the liquid return interface; The recovery flow is obtained according to the flow data of the recovery interface when the target vehicle end is connected to the recovery interface.

[0012] In the second aspect, a liquid cooling interactive control system is provided in this embodiment, the system comprising: a control module, a liquid cooling interactive module, a recovery module, and a charging gun supporting module, the liquid cooling interactive module is connected to the recovery module and the charging gun supporting module, the recovery module is connected to the charging gun supporting module, and the charging gun supporting module is also connected to the gun end and the vehicle end of the charging gun respectively; wherein, The control module is used to implement the liquid cooling flow detection method described in the first aspect when executed; The liquid cooling interaction module is used to output the cooling liquid to the charging gun matching module and receive the refluxed cooling liquid from the charging gun matching module; The recovery module is used to recover the coolant from the charging gun matching module and input the recovered coolant into the liquid cooling interaction module; The charging gun supporting module is used to input coolant into the vehicle end and receive coolant output by the vehicle end.

[0013] In some of the embodiments, the charging gun supporting module includes a liquid outlet interface, a liquid return interface and a recovery interface of the coolant; wherein, The liquid outlet interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to output the cooling liquid of the liquid cooling interaction module to the vehicle end; The liquid return interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to receive the cooling liquid returned from the vehicle end to the vehicle end; The recovery interface is connected to the interface on the vehicle end after liquid cooling interaction, and is used to recover the coolant.

[0014] In some embodiments, the liquid cooling interaction module includes a liquid storage tank, a circulation pump and a temperature regulating plate, and the temperature regulating plate integrates a cold plate and a heating plate; wherein, The liquid storage tank is used to store coolant; The circulating pump is used to transport the coolant to the circulation loop constructed by the liquid cooling interactive control system and the vehicle end; The temperature regulating plate is used to adjust the temperature of the coolant.

[0015] The above-mentioned liquid cooling flow detection method and liquid cooling interaction control system realize the detection of the flow and power of the coolant during the liquid cooling interaction process by acquiring the flow data of multiple segments during the liquid cooling interaction process, thereby solving the problem of difficulty in detecting the liquid cooling interaction process between the charging pile and the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an application environment diagram of a liquid cooling flow detection method in an embodiment; Figure 2 A schematic diagram of a flow chart of a liquid cooling flow rate detection method in one embodiment; Figure 3 is a schematic diagram of a liquid cooling interactive control system in one embodiment; Figure 4 A schematic diagram of a charging gun supporting module connected to a charging gun in one embodiment; Figure 5 is a schematic diagram of a liquid cooling interactive control system in another embodiment; Figure 6 A schematic diagram of a liquid cooling flow rate detection method in another embodiment; Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0018] The liquid cooling flow detection method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. The liquid cooling interactive system can be driven to run and the coolant flow data can be obtained through the terminal, or the interaction between the terminal and the server, and the liquid cooling interactive system can be detected based on the flow data. Among them, the terminal 102 can be but is not limited to various personal computers, laptops, smart phones, tablet computers, and Internet of Things devices. The server 104 can be implemented with an independent server or a server cluster consisting of multiple servers.

[0019] In one embodiment, Figure 2 As shown, a liquid cooling flow detection method is provided, and the method is applied to Figure 1 The terminal 102 in the example is used as an example to illustrate the application of the liquid cooling interactive system, including the following steps: Step S202, when a circulation loop is formed between the liquid cooling interactive system and the target vehicle end, the liquid cooling interactive system is driven to operate so that the coolant starts to circulate.

[0020] The liquid interaction system absorbs the heat generated by the designated module of the target vehicle through circulating coolant and dissipates the heat to the air through the radiator. The liquid cooling interaction system can be connected to the target vehicle through a charging pile or directly to the target vehicle.

[0021] Optionally, the liquid cooling interactive system stores coolant and a circulation pump. After the circulation loop is constructed, the coolant is transported from the liquid cooling interactive system to the target vehicle end, lowers the temperature of a designated module of the target vehicle end, and then returns to the liquid cooling interactive system for the next cycle.

[0022] Step S204, during the liquid cooling interaction process, obtaining flow data at each segment of the cooling liquid circulation loop.

[0023] The flow rate of the coolant can be directly measured by a flow meter or sensor in the pipeline where the circulation loop is located to obtain flow data. The flow data may include the instantaneous flow rate of the fluid flowing through the pipeline, the total amount of fluid passing through the pipeline from a certain starting point to the current moment, and the flow rate, temperature, pressure, etc.

[0024] Optionally, flow data can be obtained at one or more of the following circuit segments: the segment where the circulating pump in the liquid-cooled interactive system is located, the liquid outlet interface where the liquid-cooled interactive system transports the coolant to the target vehicle end, the liquid return interface where the target vehicle end transports the coolant back to the liquid-cooled interactive system, the recovery interface where the liquid-cooled interactive system recovers the coolant after the liquid-cooling interaction is completed, and the segment of the circuit where the coolant is recovered to the liquid storage tank in the liquid-cooled interactive system.

[0025] Step S206, obtaining the leakage state of the circulation loop according to the flow data at each segment.

[0026] Among them, the leakage state includes: leakage in the circulation loop, no leakage in the circulation loop, and when there is leakage in the circulation loop, the segment where the leakage point may be located can also be confirmed. Optionally, it is determined whether the similarity between each flow data is greater than a preset degree. If the similarity between each flow data is less than or equal to the preset degree, it is determined that there is leakage in the liquid cooling interaction process. Among them, the instantaneous flow values ​​at each loop segment can be directly read and compared to see if they are consistent. If they are consistent, the flow data are similar, otherwise they are not similar. Considering that the flow rates between each loop may have slight differences due to the accuracy limitations of the flow detection device itself and the influence of environmental factors, the acceptable error range needs to be considered when comparing, that is, when the difference between each flow data is within a specified range, it is determined that the similarity is greater than the preset degree; otherwise, it is determined that the similarity is not greater than the preset degree. Optionally, the segment where the leakage point may be located can be determined based on the detection position corresponding to the flow data with a similarity less than or equal to the preset degree. Further, an alarm can be issued according to the specific interval of the leakage point and the operation of the liquid cooling interaction system can be stopped.

[0027] In the above-mentioned liquid cooling flow detection method, the flow data at multiple segments during the liquid cooling interaction process is obtained to detect the flow of the coolant during the liquid cooling interaction process, thereby avoiding the situation where the leakage status and loss measurement cannot be determined in time when the charging pile and the car are performing liquid cooling interaction, and solving the problem of difficulty in detecting the liquid cooling interaction process between the charging pile and the car.

[0028] In one embodiment, the related art only considers the problem of high-temperature heat dissipation caused by the excessively fast charging rate of new energy vehicles, but does not focus on solving the problems caused by low temperatures relative to high temperatures, such as slow battery charging, low battery capacity, and other problems. Based on this, the liquid-cooled interactive system includes a circulating pump, a cold plate and a heating plate for the coolant, wherein the circulating pump is used to transport the coolant to the circulation loop constructed by the liquid-cooled interactive system and the target vehicle end. The cold plate and the heating plate of the coolant are used to adjust the temperature of the coolant. Optionally, the cold plate and the heating plate of the coolant can adjust the temperature of the coolant flowing back from the target vehicle end to the liquid-cooled interactive system, and / or, the cold plate and the heating plate of the coolant can adjust the temperature of the coolant output from the liquid-cooled interactive system to the target vehicle end.

[0029] The liquid cooling interactive system is driven to operate so that the coolant starts to circulate, including: obtaining temperature information of the target vehicle end; obtaining the operating power of the cold plate or the operating power of the heating plate according to the temperature information; driving the circulation pump to operate so that the coolant circulates in the circulation loop, and driving the corresponding cold plate or heating plate to operate according to the operating power.

[0030] Among them, the temperature information of the target vehicle end includes the temperature of one or more components related to the battery module of the target vehicle end. Optionally, communication modules can be set at the target vehicle end and the liquid cooling interaction system respectively, and the power battery management system of the target vehicle end monitors the battery status of the vehicle, obtains the temperature information of the battery, and outputs the temperature information to the communication module of the liquid cooling interaction system through the communication module of the target vehicle end. When the liquid cooling interaction system is connected to the target vehicle end through the gun end of the charging gun, the temperature information can also be transmitted to the liquid cooling interaction system through the communication module of the target vehicle end and the communication module of the gun end.

[0031] Optionally, the temperature information includes the current temperature, the target temperature, or the temperature information includes the temperature difference between the current temperature and the target temperature. Based on the correlation between the temperature difference and the operating power, the operating power corresponding to the temperature information can be obtained. For example, when the current temperature is higher than the target temperature, the cold plate is driven to operate; when the current temperature is lower than the target temperature, the heating plate is driven to operate; when the current temperature is equal to the target temperature, the cold plate and the heating plate are not driven.

[0032] Further, when receiving a preset instruction outputted by the target vehicle, the temperature information of the target vehicle is obtained. The preset instruction is used to indicate that the liquid cooling interaction system needs to be turned on. Optionally, when the power battery management system of the target vehicle monitors the battery status of the vehicle and outputs a preset instruction to the liquid cooling interaction system, the power battery management system then outputs the temperature information to the liquid cooling interaction module.

[0033] In this embodiment, the cold plate and the heating plate are driven to operate according to the temperature information of the target vehicle to adjust the temperature of the coolant. While solving the high-temperature heat dissipation problem caused by the excessively fast charging rate of the new energy vehicle, it also avoids the problems of slow battery charging and low battery capacity caused by the excessively low charging temperature of the new energy vehicle, thereby realizing real-time detection and adjustment of the liquid cooling interactive system.

[0034] In one embodiment, the leakage status of the liquid-cooled interactive system is obtained according to the flow data at each segment, including: determining the pulse signal corresponding to each flow data and the operating power of the liquid-cooled interactive system when each pulse signal is generated, wherein the pulse signal is associated with the flow rate of the coolant; compensating the generation time of the pulse signal according to the operating power; if there are a specified number of abnormal pulse signals with abnormal frequencies in the pulse signal, it is determined that there is leakage in the circulation loop.

[0035] When the flow data is obtained through sensor detection, the flow sensor outputs in the form of a pulse signal. The size of the pulse signal changes with the change of the coolant flow rate. When the working power of the liquid-cooled interactive system changes, the flow rate of the coolant will be adjusted accordingly. Therefore, if the working power of the liquid-cooled interactive system is inconsistent when the pulse signal is collected, the interval time between the pulse signals can be compensated based on the power. After time compensation, the frequency of the pulse signals of each flow sensor should be consistent. Optionally, the relationship between the operating frequency and time compensation can be obtained by experiment or by building a model, thereby realizing compensation for the pulse signal generation time. An abnormal pulse signal with abnormal frequency indicates that the frequency of the pulse signal is different from the specified frequency, and / or the frequency of the pulse signal is different from the frequencies of most other pulse signals.

[0036] Further, in one embodiment, if there are a specified number of abnormal pulse signals with abnormal frequencies in the pulse signal, it is determined that there is leakage in the circulation loop, including: in the pulse signal, if there is an abnormal pulse signal and the frequency of the abnormal pulse signal is greater than or equal to a preset value, then when it is determined that the interval durations between the abnormal pulse signals are consistent, it is determined that there is leakage in the circulation loop.

[0037] Optionally, the specified number of abnormal pulse signals is 3 times as an example. When the frequency of abnormal pulses is low, the interval lengths of the three abnormal pulses are compared. If the interval time of the three abnormal pulses is consistent, leakage is determined. When the frequency of abnormal pulses is high and the frequency of the abnormal pulse signal is greater than or equal to a preset value, if the difference between the frequency of the three abnormal pulses and the preset value is greater than a specified value, the interval time may not be determined, and leakage may be directly determined. Among them, the specified number of abnormal pulse signals and the size of the preset value can be set or modified according to the test.

[0038] In this embodiment, whether there is leakage in the operation of the liquid-cooling interactive system can be accurately and quickly detected according to the frequency and interval time of the pulse signal.

[0039] In order to obtain more accurate flow data, in one embodiment, the flow data at each segment of the coolant circulation loop is obtained, including: obtaining the flow data of the coolant in the pipeline that transports the coolant from the bottom to the top.

[0040] Optionally, the flow detection device is placed in the rising stage of the pipeline to ensure that the coolant is transported from the bottom to the upper pipeline when monitoring the flow, and the pipeline is always full, thereby improving the flow monitoring accuracy. For example, the pipeline at the position where the coolant flow needs to be detected can be designed as a "J" shape, and the flow detection device is placed in the coolant rising stage in the "J" shape. The pipeline at the position where the coolant flow is detected can also be designed as other shapes, such as a step shape, etc., and the pipeline shape is not limited here. In this embodiment, by obtaining the flow data of the coolant in the pipeline that transports the coolant from the bottom to the top, the accuracy of the flow data can be improved.

[0041] In one embodiment, after determining the leakage state of the circulation loop according to the flow data at each segment, the method also includes: obtaining the outlet flow rate of the coolant during the liquid cooling interaction and the recovery flow rate of the coolant after the liquid cooling interaction according to the flow data; outputting the coolant loss during the liquid cooling interaction according to the outlet flow rate and the recovery flow rate.

[0042] Optionally, when the liquid cooling interaction system responds to the battery management system running, when the battery management system outputs a preset instruction to turn on the liquid cooling interaction system to the liquid cooling interaction system, it starts to obtain the flow data when the target vehicle end is connected to the liquid outlet interface and the liquid return interface, until the battery management system outputs an instruction to turn off the liquid cooling interaction system. Among them, the liquid outlet flow rate can be obtained according to the flow data detected by the liquid outlet interface or the liquid return interface during the liquid cooling interaction process, or the flow data detected at the liquid outlet interface and the liquid return interface can be combined by mathematical methods such as taking the average to obtain the liquid outlet flow rate. When the liquid cooling interaction ends, the recovery interface is connected to the target vehicle end and the recovery interface starts to recover the coolant, the flow data at the recovery interface starts to be obtained until the coolant recovery ends and the recovery flow rate is obtained.

[0043] Furthermore, the power consumption of the liquid-cooled interactive system can also be calculated: when the liquid-cooled interactive system responds to the operation of the battery management system, it starts to sample the operating current and voltage according to the internal circuit, and then calculates the power consumption of the liquid-cooled interactive system, and outputs the power consumption after the coolant is recovered. In commercial scenarios, the power consumption and coolant loss are combined to facilitate charging and billing. Optionally, when the liquid outlet flow rate and the recovery flow rate are consistent, the output power consumption during the liquid-cooled interaction process is output; when the liquid outlet flow rate and the recovery flow rate are inconsistent, the output power consumption during the liquid-cooled interaction process is output, and the coolant loss is obtained according to the difference between the liquid outlet flow rate and the recovery flow rate. It is understandable that only the coolant loss can also be output according to user needs.

[0044] In this embodiment, the cooling liquid loss in the liquid cooling interaction process is obtained according to the liquid outlet flow rate and the recovery flow rate, thereby intuitively reflecting the working status of the liquid cooling interaction system, which is conducive to the monitoring of the liquid cooling interaction system.

[0045] In one embodiment, during the liquid cooling interaction process, the liquid outlet interface and the liquid return interface of the coolant are connected to the target vehicle end, and after the liquid cooling interaction, the recovery interface of the coolant is connected to the target vehicle end; the liquid outlet flow rate of the coolant during the liquid cooling interaction and the recovery flow rate of the coolant after the liquid cooling interaction are obtained according to the flow data, including: obtaining the liquid outlet flow rate according to the flow data detected by the liquid outlet interface and / or the liquid return interface when the target vehicle end is connected to the liquid outlet interface and the liquid return interface; obtaining the recovery flow rate according to the flow data of the recovery interface when the target vehicle end is connected to the recovery interface.

[0046] Optionally, the liquid cooling interaction includes a liquid outlet interface, a liquid return interface and a recovery interface of the coolant. Among them, the liquid outlet interface is used to output the coolant of the liquid cooling interaction module to the target vehicle end; the liquid return interface is used to receive the coolant returned from the target receiving vehicle end to the target vehicle end; the recovery interface is used to recover the coolant. During the liquid cooling interaction process, the liquid outlet interface and the liquid return interface of the drive coolant are connected to the target vehicle end so that the coolant can circulate in the circulation pipeline; after the liquid cooling interaction ends, the recovery interface of the drive coolant is connected to the target vehicle end so that the coolant can be recovered.

[0047] In this embodiment, flow data is obtained according to the connection status between the target vehicle end and the liquid outlet interface, the liquid return interface and the recovery interface, so that after the liquid cooling interaction is completed, the remaining coolant in the target vehicle end pipeline can be recovered by the recovery pipeline, thereby making the detection of the recovery flow more accurate and improving the accuracy of liquid cooling system monitoring.

[0048] Based on the same inventive concept, the embodiment of the present application also provides a liquid cooling interactive control system for implementing the liquid cooling flow detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more liquid cooling interactive control system embodiments provided below can refer to the limitations of the liquid cooling flow detection method above, and will not be repeated here.

[0049] In one embodiment, Figure 3 As shown, a liquid cooling interactive control system is provided, the system includes: a control module, a liquid cooling interactive module, a recovery module, and a charging gun supporting module, the liquid cooling interactive module is connected to the recovery module and the charging gun supporting module, the recovery module is connected to the charging gun supporting module, and the charging gun supporting module is also connected to the gun end and the vehicle end of the charging gun respectively; wherein, The control module is used to implement one or more of the above-mentioned liquid cooling flow rate detection method embodiments when executed; The liquid cooling interaction module is used to output the cooling liquid to the charging gun supporting module and receive the cooling liquid returned from the charging gun supporting module; The recovery module is used to recover the coolant from the charging gun supporting module and input the recovered coolant into the liquid cooling interaction module; The charging gun supporting module is used to input coolant into the vehicle end and receive coolant output from the vehicle end.

[0050] Each module in the liquid cooling interactive control system can be implemented in whole or in part by software, hardware, or a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0051] In one embodiment, the liquid cooling interactive control system further includes a vehicle-side interface, through which the charging gun supporting module is connected to the vehicle-side battery management system. The vehicle-side interface is provided with a flow sensor and a communication module, and the flow sensor is used to detect the flow of the coolant at the vehicle-side interface.

[0052] Optionally, the charging gun supporting module also includes a flow sensor and a communication module, wherein the flow sensor is used to detect the flow of coolant at the vehicle-end interface.

[0053] Optionally, the communication module in the vehicle-side interface is used to communicate with the battery management system on the vehicle side and the communication module in the charging gun supporting module; correspondingly, the communication module in the charging gun supporting module is used to communicate with the communication module and the control module in the vehicle-side interface.

[0054] In one embodiment, the charging gun supporting module includes a liquid outlet interface, a liquid return interface and a recovery interface for the coolant; wherein the liquid outlet interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to output the coolant of the liquid cooling interaction module to the vehicle end; the liquid return interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to receive the coolant returned from the vehicle end to the vehicle end; the recovery interface is connected to the interface of the vehicle end after the liquid cooling interaction, and is used to recover the coolant.

[0055] Among them, the charging gun supporting module can be designed separately or integrated with the charging gun. Regardless of whether the charging gun supporting module is designed as an accessory separately or integrated with the charging gun, the liquid pipeline of the liquid-cooled interactive control system terminal is independent of the gun line pipeline outlet. In the absence of a charging gun, the liquid-cooled interactive control system can independently realize liquid cooling interaction and recycling based on the charging gun supporting module.

[0056] Optionally, Figure 4 A schematic diagram of a charging gun supporting module connected to a charging gun is provided. Figure 4As shown, points A, A', B and B' are all contact points between the charging gun supporting module and the charging gun. The charging gun supporting module adopts an open ring belt structure, based on the two pairs of fixed points of point A, point A', point B and B', to achieve fixation at the gun end, increasing the stability of the charging gun supporting module connected to the charging gun. Points C and C' are ring belt locks that firmly lock the accessories on the charging gun.

[0057] Optionally, the charging gun supporting module is equipped with flow sensors at the liquid outlet interface, liquid return interface and recovery interface. Since the flow sensor can only ensure accuracy when the tube is full of liquid, in order to ensure that the tube at the flow sensor is always full of liquid, the liquid cooling interactive pipelines at both ends of the ports corresponding to the liquid outlet interface, liquid return interface and recovery interface are designed to be in the shape of a "J", and the flow sensor is placed in the rising stage of the pipeline to ensure that the pipeline is always in a full pipe state when monitoring the flow, thereby ensuring the accuracy of flow monitoring.

[0058] Furthermore, the charging gun supporting module is configured as a rotatable interface, and the connection between the liquid outlet interface and the liquid return interface and the vehicle-end interface, or the connection between the recovery interface and the vehicle-end interface, is realized by rotation. In order to realize the rotation of the charging gun supporting module, a corresponding rotatable outer ring can be provided at the corresponding charging gun end, so that the charging gun end fits with the accessory ring in the charging gun supporting module to realize the rotation of the accessory; the rotatable outer ring at the charging gun end also has a self-locking structure, and the self-locking structure and the mechanical lock of the gun end are jointly controlled by key control to prevent the misuse of the charging gun supporting module. Optionally, after the liquid cooling interaction is completed, there must be residual coolant in the vehicle-end pipeline. In order to complete the recovery of the coolant, the charging gun supporting module can be provided with a rotatable ear-hanging interface, and the left and right ends of the charging gun supporting module are respectively the liquid cooling interaction interface and the recovery interface, wherein the liquid cooling interaction interface includes the liquid outlet interface and the liquid return interface. After the liquid cooling interaction is completed, the gun head can be pulled out, and the matching accessories in the charging gun supporting module can be rotated 180° and then reconnected to the socket at the vehicle end. If the liquid cooling interactive control system also includes a vehicle-side interface, then the vehicle-side interface will be connected to the recovery pipeline interface. After receiving a successful connection signal, the recovery module starts working to recover the remaining coolant in the vehicle-side pipeline.

[0059] In one embodiment, the liquid cooling interaction module includes a liquid storage tank, a circulation pump and a temperature regulating plate, wherein the temperature regulating plate integrates a cold plate and a heating plate; wherein the liquid storage tank is used to store coolant; the circulation pump is used to transport the coolant to a circulation loop constructed between the liquid cooling interaction system and the vehicle end; and the temperature regulating plate is used to adjust the temperature of the coolant. The cold plate may also include a cold plate based on air cooling and / or a cold plate based on liquid cooling. Optionally, the temperature regulating plate is connected to the coolant inlet and outlet of the circulation pump.

[0060] In one embodiment, another liquid cooling interactive control system is provided. Figure 5As shown, the liquid-cooled interactive control system includes: a liquid-cooled interactive system, accessories for charging guns, a vehicle-side interface, and a recovery module. The liquid-cooled interactive system includes: a liquid storage tank, a circulation pump, a cold plate and a heating plate, a flow sensor, and a liquid-cooled interactive control module. Among them, the liquid storage tank, the circulation pump, the cold plate and the heating plate, and the flow sensor in the liquid-cooled interactive system constitute the liquid-cooled interactive module in the above embodiment, and the liquid-cooled interactive control module is the control module in the above embodiment. The accessories for the charging gun constitute the charging gun supporting module in the above embodiment.

[0061] Figure 5 The thicker arrows in the figure are used to indicate the circulation process of the coolant. In the liquid cooling interaction system, the liquid storage tank is connected to the circulation pump, which controls the coolant discharge through the circulation pump and transmits it to the first cold plate and the first heating plate through the first flow sensor. The first cold plate and the first heating plate are connected to the charging gun accessories. After the temperature of the coolant is adjusted by the cold plate and the heating plate, the coolant is transported to the vehicle-end interface through the charging gun accessories. After the coolant circulates in the vehicle end, it returns to the charging gun accessories. During the liquid cooling interaction process, the charging gun accessories transport the return liquid to the second cold plate and the second heating plate, and the second cold plate and the second heating plate transport the coolant to the liquid storage tank after passing through the second sensor. After the liquid cooling interaction is completed, the charging gun accessories transport the coolant to the recovery module.

[0062] Figure 5 The thinner dashed arrows in the figure are used for the charging path of the charging gun. Figure 5The thinner solid arrow in the figure indicates the communication connection. The communication protocol can be set according to the needs, such as the CAN communication protocol commonly used on the vehicle side, or the RS485 communication protocol. Among them, the accessories of the charging gun are accessories that need to be added on the basis of the standard charging gun, including a rotatable ear-hanging interface; the rotatable ear-hanging interface includes a communication module, a liquid outlet and return interface, and a coolant recovery interface, and the interfaces are equipped with flow sensors. The vehicle-side interface is a new component and connection port added to the standard charging interface, which is set up in conjunction with the liquid cooling interactive system. The vehicle-side interface includes a flow sensor and a communication module. The vehicle-side BMS (Battery Management System) connected to the vehicle-side interface is the vehicle's power battery management system, which is responsible for monitoring various battery states, charge and discharge management, and interaction with the vehicle host. The vehicle-side BMS provides a basis for judging the switch state of the liquid cooling interactive control system; and provides a basis for judging whether the interface is successfully connected. The recovery module is used to apply air pressure to the pipeline in the recovery module after receiving the signal that the interface replacement of the vehicle-side BMS is completed, and the pressure supply is stopped after the coolant recovery is completed. The vehicle-side interface communication module is connected to the BMS. When the switch information of the liquid cooling interactive control system is interacted, the BMS sends the information whether the vehicle needs to turn on the liquid cooling interactive system to the liquid cooling interactive control module through the communication module of the vehicle-side interface and the communication module of the charging gun accessories; when the interface in the charging gun accessories is converted, the BMS sends the information whether the interface is successfully connected to the recovery module through the communication module of the vehicle-side interface and the communication module of the charging gun accessories.

[0063] The liquid-cooled interactive control system in this embodiment is suitable for charging pile scenarios, and can be applied to liquid-cooled supercharging scenarios, ordinary DC charging scenarios and AC charging scenarios. While the liquid-cooled interactive control system solves the problem of insufficient cooling effect of the vehicle-end battery temperature control system in the supercharging scenario, the setting of the recovery module in the liquid-cooled interactive control system solves the problem of coolant recovery after liquid cooling interaction; the setting of the cold plate and the heating plate solves the problem of slow charging of new energy vehicles without a temperature control module in a low temperature environment.

[0064] Figure 6 Another liquid cooling flow detection method is provided, which is applied to a liquid cooling interactive control system, wherein the liquid cooling interactive control system uses multiple flow sensors to monitor the flow of the system in sections.

[0065] The liquid cooling interactive control module determines whether it has received a signal output by the BMS that requires the liquid cooling interactive system to be turned on. If not, the liquid cooling interactive system will not be turned on; if so, the liquid cooling interactive system will be turned on, and the liquid cooling interactive control module will receive the demand information output by the BMS. The demand information is the temperature that the vehicle needs to lower or increase. According to the temperature that the vehicle needs to lower or increase, the liquid cooling interactive control module controls the circulation pump, cold plate or heating plate based on the preset program to start working according to the preset power; at the same time, each flow sensor starts to collect liquid output data and liquid return data, and receives the flow data of each flow sensor through multiple communication modules in the liquid cooling interactive control system, and starts to calculate the power consumption. The liquid cooling interactive control module compares the multiple flow data collected, and determines whether the flow is normal based on the comparison results.

[0066] If the flow rate is abnormal, it can be determined whether there is leakage in the entire circuit, and the liquid cooling interactive control system will stop working, and the alarm of the fault area will be output to the front end. The fault area refers to the specific interval where the leakage point is located. For example, if the leakage point is at the vehicle end, the corresponding alarm signal will be fed back to the vehicle end BMS through the communication module of the vehicle end interface.

[0067] If the flow is normal, it will work normally until the BMS outputs an end signal to determine that the liquid cooling interaction is completed, and then the collected flow data will be transmitted to the liquid cooling interaction control module through the communication module corresponding to the flow sensor. After unplugging the charging gun, rotate the matching accessories of the charging gun 180° and reinsert the charging gun. At this time, the interface rotates, and the vehicle-end interface is connected to the recovery interface. After receiving the signal of successful connection, the recovery module starts to work and supplies pressure to the pipeline to return all the coolant in the pipeline. After the coolant is recovered, the recovery module stops working and transmits the recovered flow data to the liquid cooling interaction control module. The liquid cooling interaction control module compares the total liquid outlet flow and the total return liquid flow to determine whether they are consistent. If so, only the power consumption data is output; if not, the power consumption data and coolant loss data are output.

[0068] The liquid cooling flow detection method and liquid cooling interactive control system in this embodiment are suitable for the charging pile scenario. The monitoring of liquid cooling interaction is realized during the liquid cooling interaction between the pile and the car, which solves the problem that the loss cannot be monitored and measured when the charging pile and the car are liquid cooling interactive. In commercial scenarios, the loss data can be transmitted to the billing module as a basis for billing. By acquiring and monitoring the flow data at multiple segments, the specific flow abnormality interval can be given, which is convenient for later maintenance; at the same time, the flow data at multiple segments provides multiple feedback quantities, which can effectively determine whether each acquisition module is normal or not.

[0069] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps. For example, the communication module receives flow data and calculates power consumption while controlling the circulating pump and the cold plate and the heating plate to start working according to the preset power.

[0070] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface and the display unit are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a liquid cooling flow detection method is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen or a projection device. The display screen can be a liquid crystal display screen or an electronic ink display screen.

[0071] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0072] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0073] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0074] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0075] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0076] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A liquid cooling flow detection method, characterized in that: The method comprises: When a circulation loop is formed between the liquid cooling interactive system and the target vehicle end, the liquid cooling interactive system is driven to operate so that the coolant starts to circulate; Acquiring flow data of the coolant at each segment of the circulation loop; The leakage state of the circulation loop is determined according to the flow data at each segment.

2. The method according to claim 1, characterized in that The liquid cooling interactive system includes a circulation pump, a cold plate and a heating plate of the coolant, and the driving of the liquid cooling interactive system to operate so that the coolant starts to circulate includes: Acquiring temperature information of the target vehicle end; Obtaining the operating power of the cold plate or the operating power of the heating plate according to the temperature information; The circulation pump is driven to operate so that the coolant circulates in the circulation loop, and the corresponding cold plate or the heating plate is driven to operate according to the operating power.

3. The method according to claim 1, characterized in that The obtaining of the leakage state of the liquid-cooling interactive system according to the flow data at each segment includes: Determine the pulse signal corresponding to each flow data and the operating power of the liquid cooling interactive system when each pulse signal is generated, wherein the pulse signal is associated with the flow size of the coolant; Compensating the generation time of the pulse signal according to the operating power; If a specified number of abnormal pulse signals with abnormal frequencies exist in the pulse signals, it is determined that there is leakage in the circulation loop.

4. The method according to claim 3, characterized in that If there are a specified number of abnormal pulse signals with abnormal frequencies in the pulse signals, then it is determined that there is leakage in the circulation loop, including: In the pulse signal, if the abnormal pulse signal exists and the frequency of the abnormal pulse signal is greater than or equal to a preset value, then when it is determined that the intervals between the abnormal pulse signals are consistent, it is determined that there is leakage in the circulation loop.

5. The method according to claim 1, characterized in that The step of obtaining flow rate data at each segment of the cooling liquid circulation loop includes: The flow rate data of the coolant in the pipeline that transports the coolant from the bottom to the top is obtained.

6. The method according to claim 1, characterized in that After determining the leakage state of the circulation loop according to the flow data at each segment, the method further includes: According to the flow data, the outflow flow rate of the cooling liquid during the liquid cooling interaction and the recovery flow rate of the cooling liquid after the liquid cooling interaction are obtained; According to the liquid outlet flow rate and the recovery flow rate, the coolant loss during the liquid cooling interaction process is output.

7. The method according to claim 6, characterized in that During the liquid cooling interaction, the liquid outlet interface and the liquid return interface of the coolant are connected to the target vehicle end, and after the liquid cooling interaction, the coolant recovery interface is connected to the target vehicle end; The obtaining, according to the flow data, the liquid outflow rate of the coolant during the liquid cooling interaction and the recovery flow rate of the coolant after the liquid cooling interaction, comprises: The liquid outlet flow rate is obtained according to flow data detected by the liquid outlet interface and / or the liquid return interface when the target vehicle end is connected to the liquid outlet interface and the liquid return interface; The recovery flow is obtained according to the flow data of the recovery interface when the target vehicle end is connected to the recovery interface.

8. A liquid cooling interactive control system, characterized in that: The system includes: a control module, a liquid cooling interaction module, a recovery module, and a charging gun supporting module. The liquid cooling interaction module is connected to the recovery module and the charging gun supporting module. The recovery module is connected to the charging gun supporting module. The charging gun supporting module is also connected to the gun end and the vehicle end of the charging gun respectively. The control module is used to implement the method according to any one of claims 1 to 7 when executed; The liquid cooling interaction module is used to output the cooling liquid to the charging gun matching module and receive the refluxed cooling liquid from the charging gun matching module; The recovery module is used to recover the coolant from the charging gun matching module and input the recovered coolant into the liquid cooling interaction module; The charging gun supporting module is used to input coolant into the vehicle end and receive coolant output by the vehicle end.

9. The system according to claim 8, characterized in that The charging gun supporting module includes a liquid outlet interface, a liquid return interface and a recovery interface of the coolant; wherein, The liquid outlet interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to output the cooling liquid of the liquid cooling interaction module to the vehicle end; The liquid return interface is connected to the interface of the vehicle end during the liquid cooling interaction process, and is used to receive the cooling liquid returned from the vehicle end to the vehicle end; The recovery interface is connected to the interface on the vehicle end after liquid cooling interaction, and is used to recover the coolant.

10. The system according to claim 8, characterized in that The liquid cooling interaction module includes a liquid storage tank, a circulation pump and a temperature regulating plate, wherein the temperature regulating plate integrates a cold plate and a heating plate; wherein, The liquid storage tank is used to store coolant; The circulating pump is used to transport the coolant to the circulation loop constructed by the liquid cooling interactive control system and the vehicle end; The temperature regulating plate is used to adjust the temperature of the coolant.

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