CN117784851A - Temperature control method of liquid cooling charging gun, electronic equipment and storage medium - Google Patents
Temperature control method of liquid cooling charging gun, electronic equipment and storage medium Download PDFInfo
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- CN117784851A CN117784851A CN202410216662.6A CN202410216662A CN117784851A CN 117784851 A CN117784851 A CN 117784851A CN 202410216662 A CN202410216662 A CN 202410216662A CN 117784851 A CN117784851 A CN 117784851A
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- 239000007788 liquid Substances 0.000 title claims abstract description 137
- 238000001816 cooling Methods 0.000 title claims abstract description 134
- 238000000034 method Methods 0.000 title claims abstract description 69
- 239000000110 cooling liquid Substances 0.000 claims abstract description 88
- 239000002826 coolant Substances 0.000 claims abstract description 77
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000013507 mapping Methods 0.000 claims description 22
- 238000005086 pumping Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 3
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- 238000002679 ablation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention provides a temperature control method of a liquid cooling charging gun, electronic equipment and a storage medium, and relates to the technical field of new energy, wherein the method comprises the following steps: obtaining the current temperature T of the liquid cooling charging gun now Current carrying current I now The method comprises the steps of carrying out a first treatment on the surface of the Determining the heat exchange quantity mass ratio E of cooling liquid in liquid cooling charging gun c The method comprises the steps of carrying out a first treatment on the surface of the Determining the current carrying current of the liquid cooling charging gun as I now Corresponding heating power P now The method comprises the steps of carrying out a first treatment on the surface of the According to E c And P now Confirm to maintain T now The target passing flow v of the cooling liquid required by the liquid cooling charging gun is not lifted any more; determining a target hydraulic pressure intensity R corresponding to the cooling liquid; determining an operating current I required by a coolant pump to pump a coolant having a pressure R and a flow v p The method comprises the steps of carrying out a first treatment on the surface of the Controlling the working current of the cooling liquid pump to be I p The method comprises the steps of carrying out a first treatment on the surface of the The invention can avoid frequent opening and closing of the refrigeration equipment of the liquid cooling charging gun, and improve the temperature control effect of the liquid cooling charging gun.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a temperature control method of a liquid cooling charging gun, electronic equipment and a storage medium.
Background
With the rapid development of new energy industry, more and more charging equipment is used for liquid cooling charging guns, and because the liquid cooling charging guns generate heat in the process, heat generated by gun wires exceeds the bearing range of a carrier after heat accumulation, and the risks of ablation, electric leakage and the like can be caused, the temperature of the liquid cooling charging guns needs to be controlled within a reasonable range; the current industry has more temperature control methods for the liquid cooling charging gun, and the finer method is that a cooling starting temperature and a cooling closing temperature are set for the liquid cooling charging gun, then after the cooling charging gun reaches the starting temperature, a cooling liquid pump is started with maximum output capacity, the liquid cooling charging gun is rapidly cooled, the liquid cooling charging gun is closed after the temperature is reduced, and the liquid cooling charging gun is started after the temperature is increased again, so that the highest temperature is not over-safe; this scheme is although can control the temperature of liquid cooling rifle that charges, but, this scheme can lead to the liquid cooling rifle that charges's temperature to suddenly go up and down, and the refrigeration plant of liquid cooling rifle that charges can frequently open and close, and the temperature control effect of liquid cooling rifle that charges is relatively poor.
Disclosure of Invention
Aiming at the technical problems, the invention adopts the following technical scheme:
according to a first aspect of the present application, there is provided a temperature control method of a liquid-cooled charging gun, the method comprising the steps of:
s100, obtaining the current temperature T of the liquid cooling charging gun now Current carrying current I now 。
S200, if T now ＞T 0 Acquiring the temperature T of the coolant flowing into the liquid cooling charging gun in And temperature T of the coolant flowing out of the liquid-cooled charging gun out The method comprises the steps of carrying out a first treatment on the surface of the Wherein T is 0 Is a preset control temperature.
S300, according to T in 、T out And specific heat capacity C of the coolant l Determining the heat exchange quantity mass ratio E of cooling liquid in the liquid cooling charging gun c =（T out -T in ）×C l 。
S400, according to I now The current-carrying heating power function corresponding to the liquid cooling charging gun is used for determining that the current-carrying current of the liquid cooling charging gun is I now Corresponding heating power P now 。
S500 according to E c And P now Confirm to maintain T now The target through flow v of the coolant required for the liquid cooled charging gun is no longer raised.
S600, according to v, T in The cooling liquid corresponding to the liquid cooling charging gun passes through a flow mapping table to determine a target hydraulic pressure R corresponding to the cooling liquid; the cooling liquid passing flow mapping table comprises passing flow rates of cooling liquid corresponding to different temperature ranges and different inlet pressures.
S700, determining working current I required by the coolant pump for pumping the coolant with pressure R and flow v according to the pumped coolant flow mapping table corresponding to v, R and the coolant pump p The method comprises the steps of carrying out a first treatment on the surface of the The pumped-out coolant flow mapping table corresponding to the coolant pump comprises pumped-out coolant flow corresponding to different working currents and different hydraulic strengths of the coolant pump.
S800, controlling the working current of the coolant pump to be I p 。
According to another aspect of the present application, there is also provided a non-transitory computer readable storage medium storing at least one instruction or at least one program, where the at least one instruction or the at least one program is loaded and executed by a processor to implement the method for controlling a temperature of a liquid-cooled charging gun.
According to another aspect of the present application, there is also provided an electronic device comprising a processor and the above-described non-transitory computer-readable storage medium.
The invention has at least the following beneficial effects:
according to the temperature control method of the liquid cooling charging gun, the current temperature and current carrying current of the liquid cooling charging gun are obtained, and the temperature T when the cooling liquid flows into the liquid cooling charging gun is obtained in And temperature T of the coolant flowing out of the liquid-cooled charging gun out Determining the mass ratio of the heat exchange amount of the cooling liquid in the liquid cooling charging gun; according to I now The current-carrying heating power function corresponding to the liquid cooling charging gun is used for determining that the current-carrying current of the liquid cooling charging gun is I now Corresponding heating power P now The method comprises the steps of carrying out a first treatment on the surface of the And then according to E c And P now Confirm to maintain T now The target passing flow v of the cooling liquid required by the liquid cooling charging gun is not lifted any more; according to v, T in The method comprises the steps of determining target inlet pressure intensity R corresponding to cooling liquid through a flow mapping table by cooling liquid corresponding to a liquid cooling charging gun, and determining working current I required by the cooling liquid pump to pump the cooling liquid with pressure intensity R and flow v according to v, R and a pumped-out cooling liquid flow mapping table corresponding to the cooling liquid pump p The method comprises the steps of carrying out a first treatment on the surface of the Thereby realizing the accurate control of the temperature of the liquid cooling charging gun.
Furthermore, the working current of the liquid cooling charging gun is closely related to the related parameters of the liquid cooling charging gun and the cooling liquid according to the current carrying current, the temperature and the inlet and outlet temperatures of the cooling liquid, so that the working current of the cooling liquid pump is more consistent with the current temperature of the liquid cooling charging gun, the temperature of the liquid cooling charging gun is controlled within a smaller temperature fluctuation range, the temperature of the liquid cooling charging gun is prevented from being suddenly increased or decreased, the refrigerating equipment of the liquid cooling charging gun is frequently started and closed, and the temperature control effect of the liquid cooling charging gun is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a temperature control method of a liquid-cooled charging gun according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
Because the charging gun generates heat in the process, the heat of the gun line exceeds the bearing range of the carrier after heat accumulation, and thus the risks of ablation, electric leakage and the like are caused, the liquid cooling charging gun needs to be controlled in a preset temperature range, and the specific temperature depends on the design of the gun and the cooling medium, and the preset temperature range TD= (T) 0 -T 2 ，T 0 +T 1 ) The method comprises the steps of carrying out a first treatment on the surface of the When the temperature T of the liquid cooling charging gun is less than T 0 When the constant temperature management system is not intervened; when the temperature T of the liquid cooling charging gun is more than or equal to T 0 The constant temperature management system intervenes to control the temperature to be less than or equal to T 0 +T 1 Within the range; when the liquid cooling charging gun is under the action of the constant temperature management system, the liquid cooling charging gun is cooled by liquidThe temperature T of the charging gun is less than T 0 -T 2 And when the constant temperature management system exits the intervention state.
A method for controlling the temperature of a liquid-cooled charging gun will be described with reference to a flowchart of the method for controlling the temperature of a liquid-cooled charging gun shown in fig. 1, and the method for controlling the temperature of a liquid-cooled charging gun may include the steps of:
s100, obtaining the current temperature T of the liquid cooling charging gun now Current carrying current I now 。
In this embodiment, charging stake when charging the vehicle, the liquid cooling rifle that charges can produce heat for liquid cooling rifle self temperature rise that charges can obtain the current temperature T of liquid cooling rifle that charges through the temperature sensor that sets up in the liquid cooling rifle that charges now The method comprises the steps of carrying out a first treatment on the surface of the Current carrying current I of liquid cooling charging gun now It may be obtained by the management system of the charging stake.
S200, if T now ＞T 0 Acquiring the temperature T of the coolant flowing into the liquid cooling charging gun in And temperature T of the coolant flowing out of the liquid-cooled charging gun out 。
In this embodiment, the optimal temperature control state of the liquid cooling charging gun is to control the temperature of the liquid cooling charging gun to a preset control temperature T 0 The method comprises the steps of carrying out a first treatment on the surface of the I.e. T 0 A temperature threshold value for starting a constant temperature management system corresponding to the liquid cooling charging gun is set as T now ＞T 0 When the constant temperature management system is started immediately, the coolant pump is started; at this time, the coolant pump pumps the coolant into the liquid cooling gun, and the temperature T of the coolant flowing into the liquid cooling charging gun can be obtained by a preset temperature sensor in And temperature T of the coolant flowing out of the liquid-cooled charging gun out 。
S300, according to T in 、T out And specific heat capacity C of the coolant l Determining the heat exchange quantity mass ratio E of cooling liquid in the liquid cooling charging gun c =（T out -T in ）×C l 。
In this embodiment, different cooling liquids have different specific heat capacities, and the specific heat capacity C of the cooling liquid can be determined according to the cooling liquid used l In joules per kilogram Kelvin (J.kg -1 ·k -1 ）；E c In joules per kilogram (J.kg) -1 ) The heat exchange amount of the cooling liquid per unit mass can be understood.
S400, according to I now The current-carrying heating power function corresponding to the liquid cooling charging gun is used for determining that the current-carrying current of the liquid cooling charging gun is I now Corresponding heating power P now 。
In this embodiment, when the cooling system corresponding to the liquid cooling charging gun does not work, different currents are introduced, corresponding heating powers are also different, and the current-carrying heating power function corresponding to the liquid cooling charging gun can be determined by the following steps:
s410, obtaining heating power of the liquid cooling charging gun when each preset current is fed in to obtain a current power group list A= (A) 1 ，A 2 ，…，A i ，…，A n ) I=1, 2, …, n; wherein A is i For the obtained ith current power group, n is the number of preset currents; a is that i =（A i，1 ，A i，2 ）；A i，1 For the ith preset current, A i，2 And (5) heating power when the ith preset current is introduced into the liquid cooling charging gun.
In this embodiment, A i，2 =A i，1 2 X r; wherein r is the resistance corresponding to the liquid cooling charging gun.
And S420, fitting all the current power groups in the A through a preset function fitting algorithm to obtain a current-carrying heating power function corresponding to the liquid-cooling charging gun.
In this embodiment, a corresponding curve can be obtained according to a, and then a preset function fitting algorithm is used to fit the curve, so as to obtain a current-carrying heating power function corresponding to the liquid-cooling charging gun; the predetermined function fitting algorithm may be a least squares curve fitting algorithm, or other existing fitting algorithm.
S500 according to E c And P now Confirm to maintain T now The target through flow v of the coolant required for the liquid cooled charging gun is no longer raised.
In this embodiment, to prevent the temperature of the liquid cooling charging gun from rising, the heat taken away by the cooling liquid is not less than the heat productivity of the liquid cooling charging gun, so the heat exchanged in the time period t needs to satisfy the following relationship:
E c ×v×ρ×t≥P now ×t；
wherein ρ is the density of the cooling liquid in kg.L -1 The method comprises the steps of carrying out a first treatment on the surface of the The unit of the time period t is seconds (S), and the unit of the target passing flow v is L.S -1 The method comprises the steps of carrying out a first treatment on the surface of the According to the above relation, v.gtoreq.P can be obtained now /（E c X ρ); i.e. the minimum value of the target passing flow v is P now /（E c ×ρ）。
S600, according to v, T in The cooling liquid corresponding to the liquid cooling charging gun passes through a flow mapping table to determine a target hydraulic pressure R corresponding to the cooling liquid; the cooling liquid passing flow mapping table comprises passing flow rates of cooling liquid corresponding to different temperature ranges and different inlet pressures.
In this embodiment, the flow rate mapping table of the cooling liquid corresponding to the liquid cooling charging gun is shown in table 1:
in this embodiment, the flow mapping table of the cooling liquid corresponding to the liquid cooling charging gun may be obtained by:
will preset the temperature range-TQ min To TQ u Equally divided into u temperature intervals, as shown in the first column in table 1; will be 0 to R m Equally dividing the pressure range of (1) into m pressure intervals, as shown in the first row in table 1; the temperature of the cooling liquid is set to be TQ 1 The pressure of the cooling liquid entering the liquid cooling charging gun is set as R 1 The cooling liquid at the temperature TQ can be obtained 1 The liquid inlet pressure is R 1 Corresponding to the flow rate v (TQ 1 ，R 1 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the method, the passing flow of the cooling liquid at different temperatures and under the strong feed liquid pressure can be obtained, thereby obtaining the liquid cooling charge shown in Table 1And the cooling liquid corresponding to the electric gun passes through the flow mapping table.
The temperature interval and the pressure interval may be divided into a plurality of points, each of which may be approximately continuous, when the temperature interval and the pressure interval are sufficiently divided; thus, according to v and T in The corresponding target hydraulic pressure intensity R can be accurately determined, or the corresponding target hydraulic pressure intensity R can be approximately determined.
S700, determining working current I required by the coolant pump for pumping the coolant with pressure R and flow v according to the pumped coolant flow mapping table corresponding to v, R and the coolant pump p The method comprises the steps of carrying out a first treatment on the surface of the The pumped-out coolant flow mapping table corresponding to the coolant pump comprises pumped-out coolant flow corresponding to different working currents and different hydraulic strengths of the coolant pump.
In this embodiment, the pumped coolant flow mapping table corresponding to the coolant pump is shown in table 2:
in this embodiment, the pump-out coolant flow mapping table corresponding to the coolant pump can be obtained by:
equally dividing a preset current range into y current intervals, as shown in a first column of table 2; will be 0 to R m Equally dividing the pressure range of (2) into m pressure intervals, as shown in the first row in table 2; setting the working current of the coolant pump to I 1 Setting the liquid outlet pressure of the coolant pump as R 1 The working current of the coolant pump is I 1 The liquid outlet pressure is R 1 The coolant flow rate v (I) 1 ，R 1 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the method, the pumped cooling liquid flow of the cooling liquid pump under different working currents and different liquid outlet pressures can be obtained, so that the pumped cooling liquid flow mapping table corresponding to the cooling liquid pump shown in table 2 is obtained.
The current interval and the pressure interval may be divided into a sufficiently small interval, and may be approximated as a continuous point; therefore, the coolant pump can accurately determine the coolant with the pressure of the coolant pump pumping out of the coolant with the flow rate of the coolant v according to the flow rates of the coolant pump and the coolantRequired operating current I p Or approximately determining the operating current I required by the coolant pump to pump coolant at a pressure Rflow v p 。
S800, controlling the working current of the coolant pump to be I p 。
After obtaining I p Then, the working current of the cooling liquid pump is controlled to be I through a preset control module p And the temperature of the liquid cooling charging gun can be accurately controlled.
According to the temperature control method of the liquid cooling charging gun, the current temperature and current carrying current of the liquid cooling charging gun are obtained, and the temperature T when the cooling liquid flows into the liquid cooling charging gun is obtained in And temperature T of the coolant flowing out of the liquid-cooled charging gun out Determining the mass ratio of the heat exchange amount of the cooling liquid in the liquid cooling charging gun; according to I now The current-carrying heating power function corresponding to the liquid cooling charging gun is used for determining that the current-carrying current of the liquid cooling charging gun is I now Corresponding heating power P now The method comprises the steps of carrying out a first treatment on the surface of the And then according to E c And P now Confirm to maintain T now The target passing flow v of the cooling liquid required by the liquid cooling charging gun is not lifted any more; according to v, T in The method comprises the steps of determining target inlet pressure intensity R corresponding to cooling liquid through a flow mapping table by cooling liquid corresponding to a liquid cooling charging gun, and determining working current I required by the cooling liquid pump to pump the cooling liquid with pressure intensity R and flow v according to v, R and a pumped-out cooling liquid flow mapping table corresponding to the cooling liquid pump p The method comprises the steps of carrying out a first treatment on the surface of the Thereby realizing the accurate control of the temperature of the liquid cooling charging gun.
In addition, in the method, according to the current carrying current, the temperature and the inlet and outlet temperatures of the liquid cooling charging gun, the working current of the cooling liquid pump is closely related to the related parameters of the liquid cooling charging gun and the cooling liquid, so that the working current of the obtained cooling liquid pump is more consistent with the current temperature of the liquid cooling charging gun, the temperature of the liquid cooling charging gun is controlled in a smaller temperature fluctuation range, the problems that the temperature of the liquid cooling charging gun is suddenly high and suddenly low and the refrigerating equipment of the liquid cooling charging gun is frequently started and closed are avoided, and the temperature control effect of the liquid cooling charging gun is improved.
In an embodiment, since the current change of the liquid cooling charging gun is faster than the output change of the control result of the coolant pump, the output of the responsive refrigerating output is delayed relative to the temperature change of the liquid cooling charging gun, the temperature of the liquid cooling charging gun line will also have a rising trend within a period of time after the response of the coolant pump, and the accumulated temperature rise of the liquid cooling charging gun will occur in extreme cases, i.e. T exceeds T 1 Is a phenomenon of (2); on the other hand, when the current carrying current of the liquid cooling charging gun is changed frequently, the cooling liquid pump can also adjust the current frequently, and the service life of the cooling liquid pump is not friendly.
In addition, when the electric automobile is charged, the charging current required by the automobile end is relatively stable, so that the current passing through the charging gun is generally relatively stable; however, due to the charging strategy of the battery system of some vehicles, the request current is suddenly increased or decreased, so that the current flowing through the charging gun is also suddenly increased or decreased; according to the temperature control method in the above embodiment, because the current carrying current of the liquid cooling charging gun is changed, the changed working current of the cooling liquid pump can be output in real time, so that the working current of the cooling liquid pump is frequently switched, and the working jitter of the cooling liquid pump can be caused, so that the service life of the cooling liquid pump is shortened.
In view of the above, after step S800, the method may include the steps of:
s910, obtaining and generating the previous adjacent I p Time t1 of (1) and generating the current I p Is set, time t2 of (2).
In the present embodiment, I p Is continuously generated with the passage of time, thus, the generation of the previous adjacent I can be obtained p Time t1 of (1) and generating the current I p Is set, time t2 of (2).
S920, according to the wire mass m of the liquid cooling charging gun and the specific heat melt C of the liquid cooling charging gun c 、P now And E is c And determining the heat accumulated temperature rise delta T of the liquid cooling charging gun.
In this embodiment, the accumulated temperature rise Δt of the liquid cooling charging gun is mainly from after the current-carrying and heating of the liquid cooling charging gun wire, the heat is not completely transferred, and heat accumulation is formed in the gun body, so in the time interval of [ T1, T2], the accumulated temperature rise of the liquid cooling charging gun satisfies the following relationship:
；
and then obtain:。
s930 according to Delta T, T now And a preset temperature range td= (T 0 -T 2 ，T 0 +T 1 ) Adjusting the working current of the cooling liquid pump; wherein T is 1 For a preset first temperature threshold value, T 2 Is a preset second temperature threshold.
Further, step S930 may include the following steps:
s931, if DeltaT is not less than T 1 X alpha and T now ≥T 0 +TA, according to the increased current carrying current of the liquid cooling charging gun, increasing the working current of the cooling liquid pump; wherein alpha is a preset first weight, and 0 < alpha < 1; TA is a preset third temperature threshold.
In the present embodiment, if ΔT is not less than T 1 X alpha and T now ≥T 0 +TA indicates that the current accumulated temperature rise of the liquid cooling charging gun is higher, the flow of the cooling liquid output by the cooling liquid pump is slightly smaller, the working current of the cooling liquid pump can be adjusted to be increased according to the increased current carrying current of the liquid cooling charging gun, the cooling liquid pump can be increased to output the cooling liquid flow to cool the gun, and the temperature is prevented from exceeding the constant temperature control range.
S932, if DeltaT is less than or equal to-T 2 X beta and T now ≤T 0 -TB, reducing the operating current of the coolant pump in accordance with the reduced current carrying current of the liquid cooled charging gun; wherein beta is a preset second weight, and beta is more than 0 and less than 1; TB is a preset fourth temperature threshold.
In this embodiment, if ΔT is not more than-T 2 X beta and T now ≤T 0 TB, the flow rate of the cooling liquid output by the cooling liquid pump is overlarge, the working current of the cooling liquid pump can be regulated to be reduced according to the current carrying current of the reduced liquid cooling charging gun, and the cooling liquid pump can be reduced to outputThe cooling liquid flow cools the liquid cooling charging gun, so that the energy consumption is increased due to the fact that the cooling liquid pump works for a long time in a high power mode.
S933, if-T 2 ×β＜ΔT＜T 1 X alpha or T 0 -TB＜T now ＜T 0 +TA, the operating current of the coolant pump is not adjusted.
In the present embodiment, if-T 2 ×β＜ΔT＜T 1 X alpha or T 0 -TB＜T now ＜T 0 +TA indicates that the fluctuation of temperature is in a preset range, and the working current of the cooling liquid pump is not adjusted even though the current carrying current of the liquid cooling charging gun is changed, so that the adjustment times of the working current of the cooling liquid pump are reduced, and the service life of the cooling liquid pump is prolonged.
Further, according to practical experience, α=0.4, β=0.5 may be set; ta=3 ℃, tb=2 ℃; under the parameter, the method has better effect of inhibiting temperature fluctuation.
Further, after step S800, the method may further include the steps of:
s1000, if T now ＜T 0 -T 2 Controlling the coolant pump to stop working; wherein T is 2 Is a preset second temperature threshold.
In the present embodiment, if T now ＜T 0 -T 2 Indicating that the temperature of the liquid-cooled charging gun is too low, at this time, the coolant pump is controlled to stop working so as to reduce the electric energy consumption.
In this embodiment, by the above method, when the current carrying current of the liquid cooling charging gun changes frequently, the frequent adjustment of the current following by the coolant pump and the frequent switching of the working current of the coolant pump can be avoided, the working shake of the coolant pump is reduced, and the service life of the coolant pump is prolonged.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order or that all illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
Embodiments of the present invention also provide a non-transitory computer readable storage medium that may be disposed in an electronic device to store at least one instruction or at least one program for implementing one of the methods embodiments, the at least one instruction or the at least one program being loaded and executed by the processor to implement the methods provided by the embodiments described above.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
Embodiments of the present invention also provide an electronic device comprising a processor and the aforementioned non-transitory computer-readable storage medium.
An electronic device according to this embodiment of the present application. The electronic device is only one example and should not impose any limitation on the functionality and scope of use of the embodiments of the present application.
The electronic device is in the form of a general purpose computing device. Components of an electronic device may include, but are not limited to: the at least one processor, the at least one memory, and a bus connecting the various system components, including the memory and the processor.
Wherein the memory stores program code that is executable by the processor to cause the processor to perform steps according to various exemplary embodiments of the present application described in the above section of the "exemplary method" of the present specification.
The storage may include readable media in the form of volatile storage, such as Random Access Memory (RAM) and/or cache memory, and may further include Read Only Memory (ROM).
The storage may also include a program/utility having a set (at least one) of program modules including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The bus may be one or more of several types of bus structures including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures.
The electronic device may also communicate with one or more external devices (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device, and/or with any device (e.g., router, modem, etc.) that enables the electronic device to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface. And, the electronic device may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through a network adapter. The network adapter communicates with other modules of the electronic device via a bus. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with an electronic device, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
Embodiments of the present invention also provide a computer program product comprising program code for causing an electronic device to carry out the steps of the method according to the various exemplary embodiments of the invention as described in the specification, when said program product is run on the electronic device.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. Those skilled in the art will also appreciate that many modifications may be made to the embodiments without departing from the scope and spirit of the invention.
Claims (10)
1. A method for controlling the temperature of a liquid-cooled charging gun, the method comprising the steps of:
s100, obtaining the current temperature T of the liquid cooling charging gun now Current carrying current I now ；
S200, if T now ＞T 0 Acquiring the temperature T of the coolant flowing into the liquid cooling charging gun in And temperature T of the coolant flowing out of the liquid-cooled charging gun out The method comprises the steps of carrying out a first treatment on the surface of the Wherein T is 0 The temperature is preset;
s300, according to T in 、T out And specific heat capacity C of the coolant l Determining the heat exchange quantity mass ratio E of cooling liquid in the liquid cooling charging gun c =（T out -T in ）×C l ；
S400, according to I now The current-carrying heating power function corresponding to the liquid cooling charging gun is used for determining that the current-carrying current of the liquid cooling charging gun is I now Corresponding heating power P now ；
S500 according to E c And P now Confirm to maintain T now The target passing flow v of the cooling liquid required by the liquid cooling charging gun is not lifted any more;
s600, according to v, T in The cooling liquid corresponding to the liquid cooling charging gun passes through a flow mapping table to determine a target hydraulic pressure R corresponding to the cooling liquid; wherein the cooling liquid passing flow mapping table corresponding to the liquid cooling charging gun comprises cooling liquid in different temperature ranges and different inlet liquid pressure pairsThe corresponding flow rate;
s700, determining working current I required by the coolant pump for pumping the coolant with pressure R and flow v according to the pumped coolant flow mapping table corresponding to v, R and the coolant pump p The method comprises the steps of carrying out a first treatment on the surface of the The pumped-out coolant flow mapping table corresponding to the coolant pump comprises pumped-out coolant flow corresponding to different working currents and different hydraulic strengths of the coolant pump;
s800, controlling the working current of the coolant pump to be I p 。
2. The method of claim 1, wherein the current-carrying heating power function corresponding to the liquid-cooled charging gun is determined by:
s410, obtaining heating power of the liquid cooling charging gun when each preset current is fed in to obtain a current power group list A= (A) 1 ，A 2 ，…，A i ，…，A n ) I=1, 2, …, n; wherein A is i For the obtained ith current power group, n is the number of preset currents; a is that i =（A i，1 ，A i，2 ）；A i，1 For the ith preset current, A i，2 Heating power when the ith preset current is introduced into the liquid cooling charging gun;
and S420, fitting all the current power groups in the A through a preset function fitting algorithm to obtain a current-carrying heating power function corresponding to the liquid-cooling charging gun.
3. The method for controlling the temperature of a liquid-cooled charging gun according to claim 1, wherein the target passing flow v is equal to or greater than P now /（E c X ρ); where ρ is the density of the cooling liquid.
4. The method of controlling the temperature of a liquid-cooled charging gun according to claim 1, characterized in that after step S800, the method comprises the steps of:
s910, obtaining and generating the previous adjacent I p Time t1 of (1) and generating the current I p Time t2 of (2);
s920, according to the wire mass m of the liquid cooling charging gun and the specific heat melt C of the liquid cooling charging gun c 、P now And E is c Determining the heat accumulated temperature rise delta T of the liquid cooling charging gun;
s930 according to Delta T, T now And a preset temperature range td= (T 0 -T 2 ，T 0 +T 1 ) Adjusting the working current of the cooling liquid pump; wherein T is 1 For a preset first temperature threshold value, T 2 Is a preset second temperature threshold.
5. The method of controlling the temperature of a liquid-cooled charging gun according to claim 4, wherein step S930 comprises the steps of:
s931, if DeltaT is not less than T 1 X alpha and T now ≥T 0 +TA, according to the increased current carrying current of the liquid cooling charging gun, increasing the working current of the cooling liquid pump; wherein alpha is a preset first weight, and 0 < alpha < 1; TA is a preset third temperature threshold;
s932, if DeltaT is less than or equal to-T 2 X beta and T now ≤T 0 -TB, reducing the operating current of the coolant pump in accordance with the reduced current carrying current of the liquid cooled charging gun; wherein beta is a preset second weight, and beta is more than 0 and less than 1; TB is a preset fourth temperature threshold;
s933, if-T 2 ×β＜ΔT＜T 1 X alpha or T 0 -TB＜T now ＜T 0 +TA, the operating current of the coolant pump is not adjusted.
6. The method of controlling the temperature of a liquid-cooled charging gun according to claim 4 or 5, wherein Δt satisfies the following relationship:
；
where ρ is the density of the cooling liquid.
7. The method of controlling the temperature of a liquid-cooled charging gun according to claim 5, wherein α=0.4, β=0.5; ta=3 ℃, tb=2 ℃.
8. The method of controlling the temperature of a liquid-cooled charging gun according to claim 1, characterized in that after step S800, the method comprises the steps of:
s1000, if T now ＜T 0 -T 2 Controlling the coolant pump to stop working; wherein T is 2 Is a preset second temperature threshold.
9. A non-transitory computer readable storage medium having at least one instruction or at least one program stored therein, wherein the at least one instruction or the at least one program is loaded and executed by a processor to implement the method of controlling the temperature of a liquid-cooled charging gun according to any one of claims 1-8.
10. An electronic device comprising a processor and the non-transitory computer readable storage medium of claim 9.
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| CN202410216662.6A CN117784851A (en) | 2024-02-27 | 2024-02-27 | Temperature control method of liquid cooling charging gun, electronic equipment and storage medium |
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| CN202410216662.6A CN117784851A (en) | 2024-02-27 | 2024-02-27 | Temperature control method of liquid cooling charging gun, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114801808A (en) * | 2022-05-13 | 2022-07-29 | 广东天枢新能源科技有限公司 | High-power liquid-cooled super quick charging equipment |
| CN116069083A (en) * | 2023-01-12 | 2023-05-05 | 浙江极氪智能科技有限公司 | Temperature control method, device and equipment of charging equipment and storage medium |
| CN116494795A (en) * | 2023-02-21 | 2023-07-28 | 深圳市禾沐微科技有限公司 | Modularized liquid cooling system |
| CN116749797A (en) * | 2023-07-14 | 2023-09-15 | 青岛海汇德电气有限公司 | Liquid cooling heat dissipation control method and device and electronic equipment |
| CN117246163A (en) * | 2023-10-16 | 2023-12-19 | 汇工(河北)机械集团有限公司 | Control method of liquid cooling charging gun, controller and charging pile |
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- 2024-02-27 CN CN202410216662.6A patent/CN117784851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801808A (en) * | 2022-05-13 | 2022-07-29 | 广东天枢新能源科技有限公司 | High-power liquid-cooled super quick charging equipment |
| CN116069083A (en) * | 2023-01-12 | 2023-05-05 | 浙江极氪智能科技有限公司 | Temperature control method, device and equipment of charging equipment and storage medium |
| CN116494795A (en) * | 2023-02-21 | 2023-07-28 | 深圳市禾沐微科技有限公司 | Modularized liquid cooling system |
| CN116749797A (en) * | 2023-07-14 | 2023-09-15 | 青岛海汇德电气有限公司 | Liquid cooling heat dissipation control method and device and electronic equipment |
| CN117246163A (en) * | 2023-10-16 | 2023-12-19 | 汇工(河北)机械集团有限公司 | Control method of liquid cooling charging gun, controller and charging pile |
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