Flow control method and related device

Abstract

The embodiment of the present application provides a flow control method and related devices, wherein the method includes: obtaining a sampling signal corresponding to a flow demand index, determining the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current working condition based on the sampling signal, and sending the target demand flow to the control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage, and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current working condition based on the liquid inlet temperature, input voltage, and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually considers the working loss of the internal components of the liquid-cooled charging module for flow control, which is conducive to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

Description

Technical Field

[0001] The present application belongs to the field of liquid-cooled charging, and specifically relates to a flow control method and related devices. Background Art

[0002] With the rapid development of the new energy electric vehicle field, liquid-cooled charging modules and liquid-cooled charging piles are gradually being promoted and popularized in the market.

[0003] The heat dissipation method of the liquid-cooled charging module is to dissipate heat through the coolant, and the flow rate of the coolant determines the efficiency of the heat dissipation of the liquid-cooled charging module. At present, common liquid-cooled charging piles usually use a fixed flow rate to dissipate heat for the liquid-cooled charging module, but the heat generated by the liquid-cooled charging module varies in actual applications, that is, the heat generated by the liquid-cooled charging module often does not require a high flow rate of liquid for heat dissipation. At this time, the fixed flow rate heat dissipation method will bring unnecessary energy loss to the liquid cooling system. Summary of the invention

[0004] The embodiments of the present application provide a flow control method and related devices, wherein the liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually performs flow control taking into account the working loss of the internal components of the liquid-cooled charging module, which is beneficial to improving the accuracy and intelligence of the flow control and saving the energy cost of the liquid cooling system.

[0005] In a first aspect, an embodiment of the present application provides a flow control method, which is applied to a target liquid-cooled charging module in a liquid-cooled charging system, wherein the liquid-cooled charging system includes a plurality of liquid-cooled charging modules, a control module, a water pump, and a water pump speed control module, wherein the target liquid-cooled charging module is any one of the plurality of liquid-cooled charging modules, the control module is respectively connected to each liquid-cooled charging module and the water pump speed control module, and the water pump speed control module is connected to the water pump; the method includes:

[0006] Acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module;

[0007] Determine, according to the sampling signal, a target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition;

[0008] The target demand flow is sent to the control module, and the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules according to the target demand flow, generate a first water pump speed control instruction according to the total flow, and send the first water pump speed control instruction to the water pump speed control module.

[0009] In a second aspect, an embodiment of the present application provides a flow control device, which is applied to a target liquid-cooled charging module in a liquid-cooled charging system, wherein the liquid-cooled charging system includes a plurality of liquid-cooled charging modules, a control module, a water pump, and a water pump speed control module, wherein the target liquid-cooled charging module is any one of the plurality of liquid-cooled charging modules, the control module is respectively connected to each liquid-cooled charging module and the water pump speed control module, the water pump speed control module is connected to the water pump, and the device includes an acquisition unit, a determination unit, and a transmission unit; wherein,

[0010] The acquisition unit is used to acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module;

[0011] The determination unit is used to determine the target required flow rate required for the target liquid-cooled charging module to dissipate heat under the current working condition according to the sampling signal;

[0012] The transmission unit is used to send the target demand flow to the control module, and the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules based on the target demand flow, and generate a first water pump speed control instruction based on the total flow, and send the first water pump speed control instruction to the water pump speed control module.

[0013] A third aspect of the present application provides an electronic device, comprising: a processor and a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for some or all of the steps described in the first aspect.

[0014] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, wherein the computer program enables a computer to execute instructions of some or all of the steps described in the first aspect of the embodiment of the present application.

[0015] A fifth aspect of the embodiments of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

[0016] It can be seen that in the embodiment of the present application, the target liquid-cooled charging module in the liquid-cooled charging system first obtains a sampling signal corresponding to a flow demand index, and the flow demand index includes at least one of the following: the liquid inlet temperature, input voltage and output current of the target liquid-cooled charging module, the input voltage is associated with the working loss of the first device in the target liquid-cooled charging module, and the output current is associated with the working loss of the second device in the target liquid-cooled charging module. Then, based on the sampling signal, the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions is determined. Finally, the target demand flow is sent to the control module. The control module is used to determine the total flow required for heat dissipation of multiple liquid-cooled charging modules based on the target demand flow, and generate a first water pump speed control instruction based on the total flow, and send the first water pump speed control instruction to the water pump speed control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually takes into account the working loss of the internal components of the liquid-cooled charging module to perform flow control, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1A It is a schematic diagram of the architecture of a liquid-cooled charging system provided in an embodiment of the present application;

[0019] Figure 1B is a schematic diagram of the architecture of another liquid-cooled charging system provided in an embodiment of the present application;

[0020] Figure 2 It is a flow chart of a flow control method provided in an embodiment of the present application;

[0021] Figure 3It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0022] Figure 4 It is a block diagram of the functional units of a flow control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist at the same time; B exists alone. Among them, A and B can be singular or plural.

[0027] In the embodiment of the present application, the symbol " / " can indicate that the objects associated with each other are in an "or" relationship. In addition, the symbol " / " can also indicate a division sign, that is, performing a division operation. For example, A / B can indicate A divided by B.

[0028] In the embodiments of the present application, "at least one item" or similar expressions refer to any combination of these items, including any combination of single items or plural items, and refer to one or more, and multiple refers to two or more. For example, at least one item of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0029] In the embodiments of the present application, "equal to" can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when less than. When equal to is used in conjunction with greater than, it is not used in conjunction with less than; when equal to is used in conjunction with less than, it is not used in conjunction with greater than.

[0030] In order to better understand the solutions of the embodiments of the present application, the electronic devices, related concepts and backgrounds that may be involved in the embodiments of the present application are first introduced below.

[0031] The electronic device of the application embodiment is a device with wireless communication function, which can be called terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. The terminal device can be fixed or mobile. It should be noted that the terminal device can support at least one wireless communication technology, such as LTE, new radio (NR), wideband code division multiple access (WCDMA), etc. For example, the terminal device may be a mobile phone, a tablet computer (pad), a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, an electronic device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal device in a future evolved public mobile land network (PLMN), etc. The electronic device may be a liquid-cooled charging module in a liquid-cooled charging system.

[0032] See also Figure 1A , Figure 1A Schematic diagram of the structure of a liquid cooling charging system provided by an embodiment of the present application. Figure 1AAs shown, the liquid-cooled charging system 1 includes a liquid-cooled charging module 10, a control module 20, a water tank 30, a water pump 40, and a water pump speed control module 50, wherein the liquid-cooled charging module 10 is connected to the control module 20, the control module 20 is connected to the water pump speed control module 50, the water tank 30 is connected to the water pump 40, and the water pump 40 is connected to the water pump speed control module 50.

[0033] The water pump speed control module 50 includes a water pump speed control circuit, and the water pump speed control circuit can adjust the working power of the water pump 40 to achieve flow control.

[0034] Among them, the control module 20 is the main control of the liquid-cooled charging module 10. The control module 20 can generate a water pump speed control instruction and send the instruction to the water pump speed control module 50. The water pump speed control module 50 adjusts the working power of the water pump 40 according to the water pump speed control instruction.

[0035] Among them, the liquid-cooled charging system 1 may also include a first temperature sensor, a second temperature sensor, a voltage sampling device and a current sampling device. The first temperature sensor is used to collect the temperature of the liquid inlet of the liquid-cooled charging module 10, the second temperature sensor is used to collect the temperature of the liquid outlet of the liquid-cooled charging module 10, the voltage sampling device can be used to collect the input voltage of the liquid-cooled charging module 10, and the current sampling device can be used to collect the output current of the liquid-cooled charging module 10. The liquid-cooled charging module 10 is connected to the first temperature sensor, the second temperature sensor, the voltage sampling device and the current sampling device respectively.

[0036] Among them, the liquid-cooled charging module 10 includes a first device and a second device. The first device can be a PFC (Power Factor Correction) device. The device thermal stress of the first device mainly depends on the conduction loss and turn-off loss of the device in the PFC circuit. The PFC circuit adopts a three-phase Vienna topology. Its conduction loss and turn-off loss mainly depend on the size of the input voltage. The smaller the input voltage, the greater the conduction loss of the device; the second device can be a DC / DC converter. The DC / DC converter adopts a phase-shifted full-bridge topology. The primary side of its transformer adopts SiC-MOSFET. The loss is mainly conduction loss and switching loss. The secondary side bridge rectifier circuit adopts SiC diodes. The main loss is conduction loss. The greater the output current, the greater the device loss. The smaller the output current, the smaller the device loss. Among them, the greater the device loss, the more the coolant is required for high-flow heat dissipation, and the smaller the device loss, the lower the coolant is required for low-flow heat dissipation.

[0037] The liquid-cooled charging system 1 may include a plurality of liquid-cooled charging modules 10 connected in parallel. Figure 1B , Figure 1B is a schematic diagram of the architecture of another liquid-cooled charging system provided in an embodiment of the present application. Figure 1B As shown, the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n are connected in parallel, the control module 20 is respectively connected to the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n, the water pump 40 is respectively connected to the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n, the first temperature sensor is used to collect the temperature of the liquid inlet of each module in the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n, the second temperature sensor is used to collect the temperature of the liquid outlet of each module in the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n, the voltage sampling device can be used to collect the input voltage of each module in the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n, and the current sampling device can be used to collect the output current of each module in the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., and the liquid-cooled charging module 1n. The target liquid-cooled charging module is any one of the liquid-cooled charging module 11, the liquid-cooled charging module 12, ..., the liquid-cooled charging module 1n.

[0038] In one possible example, the target liquid-cooled charging module 10 in the liquid-cooled charging system 1 obtains a sampling signal corresponding to a flow demand indicator, where the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module 10, wherein the input voltage is associated with the working loss of a first device in the target liquid-cooled charging module 10, and the output current is associated with the working loss of a second device in the target liquid-cooled charging module. Then, the target liquid-cooled charging module 10 determines, based on the sampling signal, a target demand flow required for heat dissipation of the target liquid-cooled charging module under current operating conditions. Finally, the target liquid-cooled charging module 10 sends the target demand flow to the control module. The control module is used to determine, based on the target demand flow, a total flow required for heat dissipation of multiple liquid-cooled charging modules, and to generate a first water pump speed control instruction based on the total flow, and to send the first water pump speed control instruction to the water pump speed control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually takes into account the working loss of the internal components of the liquid-cooled charging module to perform flow control, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

[0039] See also Figure 2 , Figure 2 1 is a flow chart of a flow control method provided in an embodiment of the present application, which is applied to a server in an interactive job scheduling system, and the method includes:

[0040] Step S201, obtaining a sampling signal corresponding to a flow demand indicator.

[0041] Among them, the flow demand index includes at least one of the following: the liquid inlet temperature, input voltage and output current of the target liquid-cooled charging module, the input voltage is associated with the working loss of the first device in the target liquid-cooled charging module, and the output current is associated with the working loss of the second device in the target liquid-cooled charging module. The reason why flow control takes into account the liquid inlet temperature, input voltage and output current is that the liquid inlet temperature, input voltage and output current affect the loss of the internal devices of the liquid-cooled charging pile. The greater the loss, the higher the temperature of the internal devices, and the greater the demand for coolant flow.

[0042] Among them, the first device can be a PFC (Power Factor Correction) device, and the second device can be a DC / DC converter. The working loss of the first device is the conduction loss and turn-off loss of the device. The conduction loss mainly depends on the input voltage. The smaller the input voltage, the greater the loss of the first device and the corresponding heat dissipation requirement. The working loss of the second device is the loss of the transformer and the loss of the secondary bridge rectifier circuit. The loss of the transformer is mainly conduction loss and switching loss. The main loss of the secondary bridge rectifier circuit is conduction loss. The larger the output current, the greater the loss of the second device and the corresponding heat dissipation requirement.

[0043] Among them, liquid-cooled charging piles are mostly arranged outdoors. The outdoor ambient temperature will directly affect the coolant temperature. Usually the coolant temperature will be about 10° higher than the ambient temperature. Therefore, the liquid inlet temperature of the liquid-cooled charging module will be relatively high. The higher the liquid inlet temperature, the greater the loss of the internal components of the module, the higher the temperature of the internal components, and the greater the demand for coolant flow.

[0044] Step S202: determining the target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition according to the sampling signal.

[0045] Step S203, sending the target demand flow to the control module, the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules according to the target demand flow, and generate a first water pump speed control instruction according to the total flow, and send the first water pump speed control instruction to the water pump speed control module.

[0046] Among them, the liquid-cooled charging system includes multiple liquid-cooled charging modules. Each liquid-cooled charging module monitors its own liquid inlet temperature, input voltage and output current, determines the target demand flow, and reports them to the control module of the liquid-cooled charging system.

[0047] The control module determines the maximum flow rate among multiple target demand flows, and determines the total flow rate required for heat dissipation of multiple liquid-cooled charging modules based on the number and maximum flow rate of liquid-cooled charging modules, where total flow rate = number × maximum flow rate. The reason is that, considering that the working state of each liquid-cooled charging module will be different, the demand flow rate of each liquid-cooled charging module will also be different. The control module takes the larger target demand flow rate given by multiple liquid-cooled charging modules, and then performs total flow calculation according to the total flow rate = number × maximum flow rate formula to obtain the total flow rate that can ultimately meet the heat dissipation requirements of the liquid-cooled charging modules under the worst working state of all liquid-cooled charging modules; the larger the total flow rate, the first water pump speed control instruction generated by the control module instructs the water pump speed control module to adjust the water pump to a larger working power, and the smaller the total flow rate, the first water pump speed control instruction generated by the control module instructs the water pump speed control module to adjust the water pump to a smaller working power.

[0048] Optionally, the control module may include a memory storing a reference working power set, the reference working power set including the correspondence between the flow rate and the working power of the water pump, the reference working power set can be queried through the total flow rate to obtain the target working power corresponding to the total flow rate, and the control module can generate a first water pump speed control instruction including the target working power, and send the first water pump speed control instruction to the water pump speed control module.

[0049] It can be seen that in the embodiment of the present application, the target liquid-cooled charging module in the liquid-cooled charging system obtains a sampling signal corresponding to a flow demand index, and the flow demand index includes at least one of the following: the liquid inlet temperature, input voltage and output current of the target liquid-cooled charging module, the input voltage is associated with the working loss of the first device in the target liquid-cooled charging module, and the output current is associated with the working loss of the second device in the target liquid-cooled charging module. Then, based on the sampling signal, the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions is determined. Finally, the target demand flow is sent to the control module. The control module is used to determine the total flow required for heat dissipation of multiple liquid-cooled charging modules based on the target demand flow, and generate a first water pump speed control instruction based on the total flow, and send the first water pump speed control instruction to the water pump speed control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually takes into account the working loss of the internal components of the liquid-cooled charging module to perform flow control, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

[0050] In one possible example, the liquid-cooled charging system includes a first temperature sensor, a voltage sampling device and a current sampling device, and the target liquid-cooled charging module is respectively connected to the first temperature sensor, the voltage sampling device and the current sampling device; in terms of obtaining the sampling signal corresponding to the flow demand indicator, the above method may include the following steps: obtaining a first sampling signal from the first temperature sensor, the first sampling signal is a signal of the first temperature sensor sampling the liquid inlet temperature of the target liquid-cooled charging module; obtaining a second sampling signal from the voltage sampling device, the second sampling signal is a signal of the voltage sampling device sampling the input voltage of the target liquid-cooled charging module; obtaining a third sampling signal from the current sampling device, the third sampling signal is a signal of the current sampling device sampling the output current of the target liquid-cooled charging module.

[0051] Among them, the first temperature sensor can be used to collect the temperature of the liquid inlet of the target liquid-cooled charging module, and send the collected first sampling signal to the target liquid-cooled charging module, the voltage sampling device can be used to collect the input voltage of the target liquid-cooled charging module, and send the collected second sampling signal to the target liquid-cooled charging module, and the current sampling device can be used to collect the output current of the target liquid-cooled charging module, and send the collected third sampling signal to the target liquid-cooled charging module.

[0052] The voltage sampling device includes but is not limited to a voltage sensor, and the current sampling device includes but is not limited to a current sensor, a current transformer, and the like.

[0053] It can be seen that in this example, the target liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current by acquiring sampling signals from the first temperature sensor, the voltage sampling device and the current sampling device, which is beneficial to the subsequent determination of the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions, is beneficial to improving the accuracy and intelligence of flow control, and is beneficial to saving the energy cost of the liquid cooling system.

[0054] In one possible example, in terms of determining the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions according to the sampling signal, the above method may include the following steps: determining the first temperature of the liquid inlet of the target liquid-cooled charging module according to the first sampling signal; determining the first demand flow according to the first temperature, the temperature reference value and the liquid inlet temperature coefficient; determining the first input voltage of the target liquid-cooled charging module according to the second sampling signal; determining the second demand flow according to the first input voltage, the voltage reference value and the input voltage coefficient; determining the first output current of the target liquid-cooled charging module according to the third sampling signal; determining the third demand flow according to the first output current, the current reference value and the output current coefficient; determining the target demand flow according to the first demand flow, the second demand flow, the third demand flow and the basic flow.

[0055] Among them, the first required flow rate = liquid inlet temperature coefficient × (first temperature - temperature reference value), the liquid inlet temperature coefficient can be obtained through the actual test data of multiple liquid-cooled charging modules, the temperature reference value can be set manually or by system default, and is not limited here. For example, the temperature reference value is 25°C. When the first temperature of the liquid inlet of the target liquid-cooled charging module is lower than the temperature reference value, the required flow rate of the target liquid-cooled charging module decreases. At this time, the greater the difference between the first temperature and the temperature reference value, the lower the required flow rate. When the first temperature of the liquid inlet of the target liquid-cooled charging module is greater than the temperature reference value, the required flow rate of the target liquid-cooled charging module increases. At this time, the greater the difference between the first temperature and the temperature reference value, the greater the required flow rate.

[0056] The voltage reference value may be manually set or set by system default, and is not limited here. For example, the voltage reference value is 380V. When the first input voltage is greater than the voltage reference value, it indicates that the loss of the first device is low and the flow required for heat dissipation is low.

[0057] The current reference value may be manually set or set by the system default, and is not limited here. For example, the current reference value is 10A. When the first output current is less than the current reference value, it indicates that the loss of the second device is low and the flow required for heat dissipation is low.

[0058] Among them, target demand flow = basic flow + first demand flow + second demand flow + third demand flow.

[0059] It can be seen that in this example, the target liquid-cooled charging module can determine the target required flow of the target liquid-cooled charging module based on the first sampling signal, the second sampling signal, and the third sampling signal, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

[0060] In one possible example, in terms of determining the second required flow rate based on the first input voltage, the voltage reference value and the input voltage coefficient, the above method may include the following steps: when it is determined that the first input voltage is less than or equal to the voltage reference value, determining the difference between the first input voltage and the voltage reference value to obtain a first voltage difference; determining the second required flow rate based on the first voltage difference and the input voltage coefficient; when it is determined that the first input voltage is greater than the voltage reference value, determining a first preset flow rate, and using the first preset flow rate as the second required flow rate.

[0061] The first preset flow rate may be manually set or set by system default, which is not limited here. For example, the first preset flow rate is 0.

[0062] Among them, when the first input voltage is less than or equal to the voltage reference value, the second required flow rate = input voltage coefficient × (voltage reference value - first input voltage). At this time, it means that in order to meet the heat dissipation demand caused by the loss of the first device, it is necessary to increase the flow rate linearly under the premise of the basic flow rate; when the first input voltage is greater than the voltage reference value, the second required flow rate = the first preset flow rate. At this time, the loss of the first device is small, and there is no need to increase the flow rate of the coolant.

[0063] Among them, the input voltage coefficient is obtained based on actual test data of multiple liquid-cooled charging modules.

[0064] It can be seen that in this example, the target liquid-cooled charging module determines different second demand flow rates according to the size relationship between the first input voltage and the voltage reference value, which is beneficial to improving the accuracy of the target demand flow rate.

[0065] In one possible example, in terms of determining the third required flow rate based on the first output current, the current reference value and the output current coefficient, the above method may include the following steps: when it is determined that the first output current is greater than or equal to the current reference value, determining the difference between the first output current and the current reference value to obtain a first current difference; determining the third required flow rate based on the first current difference and the output current coefficient; when it is determined that the first output current is less than the current reference value, determining a second preset flow rate, and using the second preset flow rate as the third required flow rate.

[0066] Among them, the output current coefficient is obtained through actual test data of multiple liquid-cooled charging modules.

[0067] The second preset flow rate may be manually set or system default, which is not limited here. For example, the second preset flow rate is 0.

[0068] Among them, when the first output current is greater than or equal to the current reference value, the third required flow = output current coefficient × (first output current - current reference value). At this time, it means that in order to meet the heat dissipation requirements caused by the loss of the second device, it is necessary to increase the flow linearly under the premise of the basic flow; when the first output current is less than the current reference value, the third required flow = the second preset flow. At this time, the loss of the second device is small and there is no need to increase the flow.

[0069] It can be seen that in this example, the target liquid-cooled charging module can determine different third demand flow rates according to the magnitude relationship between the first output current and the current reference value, which is beneficial to improving the accuracy of the target demand flow rate.

[0070] In one possible example, after sending the target demand flow to the control module, the method may include the following steps: obtaining a fourth sampling signal corresponding to the liquid inlet temperature, and obtaining a fifth sampling signal of the target liquid outlet temperature of the liquid-cooled charging module; determining the second temperature of the liquid inlet of the liquid-cooled charging module according to the fourth sampling signal; determining the third temperature of the liquid outlet of the liquid-cooled charging module according to the fifth sampling signal; determining the difference between the second temperature and the third temperature to obtain the first temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module; determining the second temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module corresponding to the target demand flow; when it is determined that the first temperature difference is greater than the second temperature difference, compensating the target demand flow according to the first temperature difference and the second temperature difference to obtain a compensated fourth demand flow; and sending the fourth demand flow to the control module.

[0071] Among them, taking into account that there may be errors in the target demand flow controlled by the liquid-cooled charging system, there is a deviation from the actual demand flow of multiple liquid-cooled charging modules. Therefore, after the water pump speed control module adjusts the water pump according to the first water pump speed control instruction, the liquid-cooled charging module can monitor the temperature difference between its own liquid inlet and outlet to determine the liquid flow flowing through the liquid-cooled charging module at this time. When the actual monitored temperature difference between the liquid inlet and the liquid outlet deviates from the temperature difference between the liquid inlet and the liquid outlet corresponding to the target demand flow, it is necessary to compensate for the target demand flow.

[0072] Among them, the liquid-cooled charging system includes a second temperature sensor, which is used to collect the temperature of the liquid outlet of the target liquid-cooled charging module. After the water pump speed control module adjusts the water pump according to the first water pump speed control instruction, the first temperature sensor collects the temperature of the liquid inlet of the target liquid-cooled charging module at this time, obtains the fourth sampling signal, and sends the fourth sampling signal to the target liquid-cooled charging module. The second temperature sensor collects the temperature of the liquid outlet of the target liquid-cooled charging module at this time, obtains the fifth sampling signal, and sends the fifth sampling signal to the target liquid-cooled charging module.

[0073] Among them, the first temperature difference is greater than the second temperature difference, which means that the flow rate of the water pump is not enough to meet the heat dissipation demand of the target liquid-cooled charging module, and the flow rate of the coolant needs to be increased, and the greater the deviation between the first temperature difference and the second temperature difference, the greater the required flow rate that needs to be compensated. Specifically, the difference between the first temperature difference and the second temperature difference can be calculated to obtain the target temperature deviation value, and the target liquid-cooled charging module can query the reference compensation flow set to obtain the target compensation flow corresponding to the target temperature deviation value, and sum the target compensation flow and the target demand flow to obtain the fourth demand flow, wherein the target liquid-cooled charging module stores a reference compensation flow set, and the reference compensation flow set includes the corresponding relationship between the temperature deviation and the compensation flow, and the fourth demand flow = target compensation flow + target demand flow.

[0074] It can be seen that in this example, the target liquid-cooled charging module can monitor whether there is a deviation between the actual temperature difference between the liquid inlet and the liquid outlet and the temperature difference between the liquid inlet and the liquid outlet corresponding to the target demand flow rate, and when there is a deviation, compensate for the target demand flow rate, which is conducive to improving the intelligence of flow control.

[0075] In one possible example, in determining the second temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate, the above method may include the following steps: determining the total module loss of the target liquid-cooled charging module; determining the second temperature difference based on the total module loss, liquid working fluid density, liquid specific heat capacity and the target required flow rate.

[0076] Among them, the target liquid-cooled charging module can calculate the total module loss inside the module under the current operating conditions.

[0077] Among them, the second temperature difference = total module loss / (liquid working fluid density×liquid specific heat capacity×target required flow rate).

[0078] It can be seen that in this example, the target liquid-cooled charging module can determine the second temperature difference between the liquid inlet and the liquid outlet corresponding to the target required flow rate, which is conducive to improving the intelligence of determining the temperature difference between the liquid inlet and the liquid outlet.

[0079] See also Figure 3 , Figure 3 is a structural schematic diagram of an electronic device provided in an embodiment of the present application, which is applied to a target liquid-cooled charging module in a liquid-cooled charging system, wherein the liquid-cooled charging system includes a plurality of liquid-cooled charging modules, a control module, a water pump, and a water pump speed control module, wherein the target liquid-cooled charging module is any one of the plurality of liquid-cooled charging modules, the control module is respectively connected to each liquid-cooled charging module and the water pump speed control module, and the water pump speed control module is connected to the water pump; Figure 3 As shown, the electronic device includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory, and the one or more programs are configured to execute the following steps by the processor:

[0080] Acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module;

[0081] Determine, according to the sampling signal, a target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition;

[0082] The target demand flow is sent to the control module, and the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules according to the target demand flow, generate a first water pump speed control instruction according to the total flow, and send the first water pump speed control instruction to the water pump speed control module.

[0083] It can be seen that in the embodiment of the present application, the electronic device first obtains a sampling signal corresponding to a flow demand indicator, and the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of a target liquid-cooled charging module, the input voltage is associated with the working loss of a first device in the target liquid-cooled charging module, and the output current is associated with the working loss of a second device in the target liquid-cooled charging module. Then, based on the sampling signal, the target demand flow required for heat dissipation of the target liquid-cooled charging module under the current operating conditions is determined. Finally, the target demand flow is sent to a control module. The control module is used to determine the total flow required for heat dissipation of multiple liquid-cooled charging modules based on the target demand flow, and to generate a first water pump speed control instruction based on the total flow, and to send the first water pump speed control instruction to the water pump speed control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually takes into account the working loss of the internal components of the liquid-cooled charging module to perform flow control, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

[0084] In one possible example, the liquid-cooled charging system includes a first temperature sensor, a voltage sampling device, and a current sampling device, and the target liquid-cooled charging module is connected to the first temperature sensor, the voltage sampling device, and the current sampling device, respectively; in terms of obtaining a sampling signal corresponding to a flow demand indicator, the above program includes instructions for performing the following steps:

[0085] Acquire a first sampling signal from the first temperature sensor, where the first sampling signal is a signal of the first temperature sensor sampling the liquid inlet temperature of the target liquid-cooled charging module;

[0086] Acquire a second sampling signal from the voltage sampling device, where the second sampling signal is a signal of the voltage sampling device sampling the input voltage of the target liquid-cooled charging module;

[0087] A third sampling signal is obtained from the current sampling device, where the third sampling signal is a signal of the current sampling device sampling an output current of the target liquid-cooled charging module.

[0088] In one possible example, in determining, according to the sampled signal, a target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition, the program includes instructions for executing the following steps:

[0089] Determining a first temperature of a liquid inlet of the target liquid-cooled charging module according to the first sampling signal;

[0090] Determining a first required flow rate according to the first temperature, a temperature reference value and a liquid inlet temperature coefficient;

[0091] Determining a first input voltage of the target liquid-cooled charging module according to the second sampling signal;

[0092] determining a second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient;

[0093] Determining a first output current of the target liquid-cooled charging module according to the third sampling signal;

[0094] determining a third required flow rate according to the first output current, the current reference value and the output current coefficient;

[0095] The target demand flow is determined according to the first demand flow, the second demand flow, the third demand flow and a basic flow.

[0096] In a possible example, in determining the second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient, the program includes instructions for executing the following steps:

[0097] When it is determined that the first input voltage is less than or equal to the voltage reference value, determining a difference between the first input voltage and the voltage reference value to obtain a first voltage difference;

[0098] determining the second required flow rate according to the first voltage difference and the input voltage coefficient;

[0099] When it is determined that the first input voltage is greater than the voltage reference value, a first preset flow rate is determined, and the first preset flow rate is used as the second required flow rate.

[0100] In a possible example, in determining the third required flow rate according to the first output current, the current reference value and the output current coefficient, the program further includes instructions for executing the following steps:

[0101] When it is determined that the first output current is greater than or equal to the current reference value, determining a difference between the first output current and the current reference value to obtain a first current difference;

[0102] determining the third required flow rate according to the first current difference and the output current coefficient;

[0103] When it is determined that the first output current is less than the current reference value, a second preset flow rate is determined, and the second preset flow rate is used as the third required flow rate.

[0104] In a possible example, after sending the target demand flow to the control module, the program further includes instructions for executing the following steps:

[0105] Acquire a fourth sampling signal corresponding to the liquid inlet temperature, and acquire a fifth sampling signal corresponding to the liquid outlet temperature of the target liquid-cooled charging module;

[0106] Determining a second temperature of a liquid inlet of the liquid-cooled charging module according to the fourth sampling signal;

[0107] Determining a third temperature of a liquid outlet of the liquid-cooled charging module according to the fifth sampling signal;

[0108] Determine a difference between the second temperature and the third temperature to obtain a first temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module;

[0109] Determine a second temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate;

[0110] When it is determined that the first temperature difference is greater than the second temperature difference, the target demand flow is compensated according to the first temperature difference and the second temperature difference to obtain a compensated fourth demand flow;

[0111] The fourth required flow rate is sent to the control module.

[0112] In one possible example, in determining the second temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate, the program further includes instructions for executing the following steps:

[0113] Determining a total module loss of the target liquid-cooled charging module;

[0114] The second temperature difference is determined according to the total module loss, liquid working fluid density, liquid specific heat capacity and the target required flow rate.

[0115] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that, in order to realize the above functions, the electronic device includes a hardware structure and / or software module corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0116] The embodiment of the present application can divide the electronic device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0117] In the case of dividing each functional module into corresponding functional modules, Figure 4 A functional unit block diagram of a flow control device is given, such as Figure 4 As shown, a target liquid-cooled charging module is applied to a liquid-cooled charging system, the liquid-cooled charging system includes multiple liquid-cooled charging modules, a control module, a water pump and a water pump speed control module, the target liquid-cooled charging module is any one of the multiple liquid-cooled charging modules, the control module is respectively connected to each liquid-cooled charging module and the water pump speed control module, and the water pump speed control module is connected to the water pump; the device includes an acquisition unit 401, a determination unit 402 and a transmission unit 403; wherein,

[0118] The acquisition unit 401 is used to acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module;

[0119] The determination unit 402 is used to determine the target required flow rate required for the target liquid-cooled charging module to dissipate heat under the current working condition according to the sampling signal;

[0120] The transmission unit 403 is used to send the target demand flow to the control module, and the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules based on the target demand flow, and generate a first water pump speed control instruction based on the total flow, and send the first water pump speed control instruction to the water pump speed control module.

[0121] It can be seen that the flow control device described in the embodiment of the present application obtains a sampling signal corresponding to a flow demand indicator, and the flow demand indicator includes at least one of the following: the liquid inlet temperature, input voltage and output current of the target liquid-cooled charging module, the input voltage is associated with the working loss of the first device in the target liquid-cooled charging module, and the output current is associated with the working loss of the second device in the target liquid-cooled charging module. Then, based on the sampling signal, the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions is determined. Finally, the target demand flow is sent to the control module. The control module is used to determine the total flow required for heat dissipation of multiple liquid-cooled charging modules based on the target demand flow, and generate a first water pump speed control instruction based on the total flow, and send the first water pump speed control instruction to the water pump speed control module. The liquid-cooled charging module can monitor its own liquid inlet temperature, input voltage and output current, and determine the target demand flow required for the target liquid-cooled charging module to dissipate heat under the current operating conditions based on the liquid inlet temperature, input voltage and output current. The control module controls the water pump to adjust the speed according to the target demand flow reported by each liquid-cooled charging module, and actually takes into account the working loss of the internal components of the liquid-cooled charging module to perform flow control, which is beneficial to improving the accuracy and intelligence of flow control and saving the energy cost of the liquid cooling system.

[0122] In a possible example, the liquid-cooled charging system includes a first temperature sensor, a voltage sampling device, and a current sampling device, and the target liquid-cooled charging module is respectively connected to the first temperature sensor, the voltage sampling device, and the current sampling device; in terms of obtaining the sampling signal corresponding to the flow demand indicator, the acquisition unit 401 is specifically used to:

[0123] Acquire a first sampling signal from the first temperature sensor, where the first sampling signal is a signal of the first temperature sensor sampling the liquid inlet temperature of the target liquid-cooled charging module;

[0124] Acquire a second sampling signal from the voltage sampling device, where the second sampling signal is a signal of the voltage sampling device sampling the input voltage of the target liquid-cooled charging module;

[0125] A third sampling signal is obtained from the current sampling device, where the third sampling signal is a signal of the current sampling device sampling an output current of the target liquid-cooled charging module.

[0126] In a possible example, in determining, according to the sampling signal, the target required flow rate required for the target liquid-cooled charging module to dissipate heat under the current working condition, the determining unit 402 is specifically configured to:

[0127] Determining a first temperature of a liquid inlet of the target liquid-cooled charging module according to the first sampling signal;

[0128] Determining a first required flow rate according to the first temperature, a temperature reference value and a liquid inlet temperature coefficient;

[0129] Determining a first input voltage of the target liquid-cooled charging module according to the second sampling signal;

[0130] determining a second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient;

[0131] Determining a first output current of the target liquid-cooled charging module according to the third sampling signal;

[0132] determining a third required flow rate according to the first output current, the current reference value and the output current coefficient;

[0133] The target demand flow is determined according to the first demand flow, the second demand flow, the third demand flow and a basic flow.

[0134] In a possible example, in determining the second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient, the determining unit 402 is specifically configured to:

[0135] When it is determined that the first input voltage is less than or equal to the voltage reference value, determining a difference between the first input voltage and the voltage reference value to obtain a first voltage difference;

[0136] determining the second required flow rate according to the first voltage difference and the input voltage coefficient;

[0137] When it is determined that the first input voltage is greater than the voltage reference value, a first preset flow rate is determined, and the first preset flow rate is used as the second required flow rate.

[0138] In a possible example, in determining the third required flow rate according to the first output current, the current reference value and the output current coefficient, the determining unit 402 is specifically configured to:

[0139] When it is determined that the first output current is greater than or equal to the current reference value, determining a difference between the first output current and the current reference value to obtain a first current difference;

[0140] determining the third required flow rate according to the first current difference and the output current coefficient;

[0141] When it is determined that the first output current is less than the current reference value, a second preset flow rate is determined, and the second preset flow rate is used as the third required flow rate.

[0142] In a possible example, after sending the target required flow to the control module, the determining unit 402 is further specifically configured to:

[0143] Acquire a fourth sampling signal corresponding to the liquid inlet temperature, and acquire a fifth sampling signal corresponding to the liquid outlet temperature of the target liquid-cooled charging module;

[0144] Determining a second temperature of a liquid inlet of the liquid-cooled charging module according to the fourth sampling signal;

[0145] Determining a third temperature of a liquid outlet of the liquid-cooled charging module according to the fifth sampling signal;

[0146] Determine a difference between the second temperature and the third temperature to obtain a first temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module;

[0147] Determine a second temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate;

[0148] When it is determined that the first temperature difference is greater than the second temperature difference, the target demand flow is compensated according to the first temperature difference and the second temperature difference to obtain a compensated fourth demand flow;

[0149] The fourth required flow rate is sent to the control module.

[0150] In a possible example, in determining the second temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate, the determining unit 402 is further specifically configured to:

[0151] Determining a total module loss of the target liquid-cooled charging module;

[0152] The second temperature difference is determined according to the total module loss, liquid working fluid density, liquid specific heat capacity and the target required flow rate.

[0153] It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0154] The electronic device provided in this embodiment is used to execute the above-mentioned flow control method, and thus can achieve the same effect as the above-mentioned implementation method.

[0155] In the case of an integrated unit, the electronic device may include a processing module, a storage module and a communication module. The processing module may be used to control and manage the actions of the electronic device, for example, it may be used to support the electronic device to execute the steps performed by the above-mentioned functional unit. The storage module may be used to support the electronic device to execute stored program codes and data, etc. The communication module may be used to support the communication between the electronic device and other devices.

[0156] Among them, the processing module can be a processor or a controller. It can implement or execute various exemplary logic boxes, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module can be a memory. The communication module can specifically be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip, etc.

[0157] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps of any method described in the above method embodiments, and the above computer includes an electronic device.

[0158] The present application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps of any method described in the method embodiment. The computer program product may be a software installation package, and the computer includes a control platform.

[0159] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0160] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0161] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0162] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0163] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0164] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the above-mentioned methods in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0165] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory, a random access memory, a magnetic disk or an optical disk, etc.

[0166] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A flow control method, characterized in that: A target liquid-cooled charging module applied to a liquid-cooled charging system, the liquid-cooled charging system comprising a plurality of liquid-cooled charging modules, a control module, a water pump and a water pump speed control module, the target liquid-cooled charging module being any one of the plurality of liquid-cooled charging modules, the control module being respectively connected to each liquid-cooled charging module and the water pump speed control module, the water pump speed control module being connected to the water pump; the method comprising: Acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module; Determine, according to the sampling signal, a target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition; Sending the target demand flow rate to the control module, the control module is used to determine the total flow rate required for heat dissipation of the multiple liquid-cooled charging modules according to the target demand flow rate, generate a first water pump speed control instruction according to the total flow rate, and send the first water pump speed control instruction to the water pump speed control module; Acquire a fourth sampling signal corresponding to the liquid inlet temperature, and acquire a fifth sampling signal corresponding to the liquid outlet temperature of the target liquid-cooled charging module; Determining a second temperature of a liquid inlet of the liquid-cooled charging module according to the fourth sampling signal; Determining a third temperature of a liquid outlet of the liquid-cooled charging module according to the fifth sampling signal; Determine a difference between the second temperature and the third temperature to obtain a first temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module; Determine a second temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate; When it is determined that the first temperature difference is greater than the second temperature difference, the target demand flow is compensated according to the first temperature difference and the second temperature difference to obtain a compensated fourth demand flow; The fourth required flow rate is sent to the control module.

2. The method according to claim 1, characterized in that The liquid-cooled charging system includes a first temperature sensor, a voltage sampling device, and a current sampling device. The target liquid-cooled charging module is connected to the first temperature sensor, the voltage sampling device, and the current sampling device, respectively. The sampling signal corresponding to the flow demand indicator is obtained, including: Acquire a first sampling signal from the first temperature sensor, where the first sampling signal is a signal of the first temperature sensor sampling the liquid inlet temperature of the target liquid-cooled charging module; Acquire a second sampling signal from the voltage sampling device, where the second sampling signal is a signal of the voltage sampling device sampling the input voltage of the target liquid-cooled charging module; A third sampling signal is obtained from the current sampling device, where the third sampling signal is a signal of the current sampling device sampling an output current of the target liquid-cooled charging module.

3. The method according to claim 2, characterized in that Determining, according to the sampling signal, a target required flow rate for heat dissipation of the target liquid-cooled charging module under the current working condition includes: Determining a first temperature of a liquid inlet of the target liquid-cooled charging module according to the first sampling signal; Determining a first required flow rate according to the first temperature, a temperature reference value and a liquid inlet temperature coefficient; Determining a first input voltage of the target liquid-cooled charging module according to the second sampling signal; determining a second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient; Determining a first output current of the target liquid-cooled charging module according to the third sampling signal; determining a third required flow rate according to the first output current, the current reference value and the output current coefficient; The target demand flow is determined according to the first demand flow, the second demand flow, the third demand flow and a basic flow.

4. The method according to claim 3, characterized in that The step of determining a second required flow rate according to the first input voltage, the voltage reference value and the input voltage coefficient comprises: When it is determined that the first input voltage is less than or equal to the voltage reference value, determining a difference between the first input voltage and the voltage reference value to obtain a first voltage difference; determining the second required flow rate according to the first voltage difference and the input voltage coefficient; When it is determined that the first input voltage is greater than the voltage reference value, a first preset flow rate is determined, and the first preset flow rate is used as the second required flow rate.

5. The method according to claim 4, characterized in that The determining of a third required flow rate according to the first output current, the current reference value and the output current coefficient comprises: When it is determined that the first output current is greater than or equal to the current reference value, determining a difference between the first output current and the current reference value to obtain a first current difference; determining the third required flow rate according to the first current difference and the output current coefficient; When it is determined that the first output current is less than the current reference value, a second preset flow rate is determined, and the second preset flow rate is used as the third required flow rate.

6. The method according to claim 1, characterized in that The determining of a second temperature difference between a liquid inlet and a liquid outlet of the liquid-cooled charging module corresponding to the target required flow rate includes: Determining a total module loss of the target liquid-cooled charging module; The second temperature difference is determined according to the total module loss, liquid working fluid density, liquid specific heat capacity and the target required flow rate.

7. A flow control device, characterized in that: A target liquid-cooled charging module applied to a liquid-cooled charging system, the liquid-cooled charging system comprising a plurality of liquid-cooled charging modules, a control module, a water pump and a water pump speed control module, the target liquid-cooled charging module being any one of the plurality of liquid-cooled charging modules, the control module being respectively connected to each liquid-cooled charging module and the water pump speed control module, the water pump speed control module being connected to the water pump; the device comprising an acquisition unit, a determination unit and a transmission unit; wherein, The acquisition unit is used to acquire a sampling signal corresponding to a flow demand indicator, wherein the flow demand indicator includes at least one of the following: a liquid inlet temperature, an input voltage, and an output current of the target liquid-cooled charging module, wherein the input voltage is associated with a working loss of a first device in the target liquid-cooled charging module, and the output current is associated with a working loss of a second device in the target liquid-cooled charging module; The determination unit is used to determine the target required flow rate required for the target liquid-cooled charging module to dissipate heat under the current working condition according to the sampling signal; The transmission unit is used to send the target demand flow to the control module, and the control module is used to determine the total flow required for heat dissipation of the multiple liquid-cooled charging modules according to the target demand flow, and generate a first water pump speed control instruction according to the total flow, and send the first water pump speed control instruction to the water pump speed control module; The determination unit is also used to obtain a fourth sampling signal corresponding to the liquid inlet temperature, and to obtain a fifth sampling signal of the liquid outlet temperature of the target liquid-cooled charging module; determine the second temperature of the liquid inlet of the liquid-cooled charging module according to the fourth sampling signal; determine the third temperature of the liquid outlet of the liquid-cooled charging module according to the fifth sampling signal; determine the difference between the second temperature and the third temperature to obtain the first temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module; determine the second temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled charging module corresponding to the target demand flow; when it is determined that the first temperature difference is greater than the second temperature difference, compensate the target demand flow according to the first temperature difference and the second temperature difference to obtain a compensated fourth demand flow; and send the fourth demand flow to the control module.

8. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory is used to store one or more programs and is configured to be executed by the processor, wherein the program comprises instructions for executing the steps in the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: A computer program for electronic data exchange is stored, wherein the computer program enables a computer to execute the method according to any one of claims 1 to 6.

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