CN113741592A - Control method for temperature control system of energy storage converter - Google Patents
Control method for temperature control system of energy storage converter Download PDFInfo
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- CN113741592A CN113741592A CN202110989128.5A CN202110989128A CN113741592A CN 113741592 A CN113741592 A CN 113741592A CN 202110989128 A CN202110989128 A CN 202110989128A CN 113741592 A CN113741592 A CN 113741592A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Abstract
The invention discloses a control method of a temperature control system of an energy storage converter, which comprises the steps of detecting the working state of the energy storage converter through a working state detection module of the energy storage converter, adjusting the temperature of a temperature adjusting device according to the environmental temperature of the working state of a battery when the energy storage converter is in the running state, and performing heating and refrigerating control on the temperature adjusting device according to the lower limit of the refrigerating temperature and the upper limit of the heating temperature of the temperature range of the normal working state of the battery; and when the energy storage converter is in a non-operation state, the temperature of the temperature adjusting device is adjusted according to the storage temperature requirement of the battery in a non-operation state. According to the control method of the energy storage converter temperature control system, on the basis of detecting and distinguishing the working state of the energy storage converter in the energy storage system, the temperature control system is controlled in different temperature ranges, the requirements of the environment temperature of the working state of a battery and the storage temperature of the non-working state are met, the power consumption of the temperature control system is reduced, and therefore the overall efficiency of the energy storage system is improved.
Description
Technical Field
The invention relates to the technical field of energy storage control, in particular to a control method of a temperature control system of an energy storage converter.
Background
In the existing energy storage system, as shown in fig. 1, due to the operating characteristics of the lithium battery, a temperature control system for cooling/heating the battery is basically adopted to control the ambient temperature of the battery to be about 23 ℃, and the temperature of the battery is between 18 ℃ and 28 ℃ in consideration of the cooling return difference of the temperature control device of 5 ℃. And the suitable storage temperature of the battery under the non-working state is between 5 and 35 ℃. Therefore, the state of the battery is not distinguished, great electric energy loss can be caused to a certain extent, and fine management of the energy storage temperature control system cannot be achieved, so that the overall efficiency of the energy storage system is reduced.
Therefore, on the basis of detecting and distinguishing the working state of the energy storage converter in the energy storage system, different temperature ranges are adopted for controlling the temperature control system, the requirements of the environment temperature of the working state of the battery and the storage temperature of the non-working state are met, the power consumption of the temperature control system is reduced, and the overall efficiency of the energy storage system is improved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method of a temperature control system of an energy storage converter, the control method of the temperature control system of the energy storage converter adopts different temperature ranges for the temperature control system on the basis of detecting and distinguishing the working state of the energy storage converter in the energy storage system, the requirements of the environmental temperature of the working state of a battery and the storage temperature of the non-working state are ensured, the power consumption of the temperature control system is reduced, and the overall efficiency of the energy storage system is improved.
In order to solve the technical problem, the invention provides a control method of a temperature control system of an energy storage converter, which comprises the energy storage converter, an energy storage energy management system and a temperature adjusting device for adjusting the temperature of a battery of the energy storage converter, and is characterized in that: the control method further comprises the following steps: the working state of the energy storage converter is detected through a working state detection module of the energy storage converter, the working state detection module sends the detected working state to the energy storage energy management system, when the energy storage converter is in a running state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, and the lower cooling temperature limit and the upper heating temperature limit of the temperature adjusting device are set according to the temperature range of the normal working state of the battery, so that the temperature adjusting device is subjected to a heating and cooling control range;
when the energy storage converter is in a non-operation state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature requirement of the battery in a non-operation state, and sets the lower cooling temperature limit and the upper heating temperature limit of the temperature adjusting device according to the temperature range of the battery in the non-operation state, so that the temperature adjusting device is heated and cooled within a control range.
Preferably, the step of setting the lower cooling temperature limit and the upper heating temperature limit of the temperature adjustment device according to the temperature range of the normal working state of the battery, so as to perform the heating and cooling control range on the temperature adjustment device specifically includes: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower refrigeration temperature limit T1 of the temperature range of the normal working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T2 of the temperature range of the normal working state of the battery, the temperature adjusting device stops heating operation.
Preferably, the "setting of the lower cooling temperature limit and the upper heating temperature limit of the temperature adjustment device according to the temperature range of the non-operating state of the battery, so as to perform the heating and cooling control range on the temperature adjustment device" specifically includes: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower refrigeration temperature limit T3 set by EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T4 set by EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops heating operation.
Preferably, the parameter range set by the temperature adjusting device in the normal working state of the battery further comprises refrigeration sensitivity and heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, and the temperature adjusting device is subjected to heating and refrigeration control according to the lower limit of the refrigeration temperature, the refrigeration sensitivity, the upper limit of the heating temperature and the heating sensitivity of the temperature range in the normal working state of the battery. The lower limit of the cooling temperature T1 is equal to the upper limit of the normal operating state temperature of the battery-cooling sensitivity, and the upper limit of the heating temperature T2 is equal to the lower limit of the normal operating state temperature of the battery + heating sensitivity.
Preferably, the parameter range set by the temperature adjusting device in the non-working state of the battery further includes a refrigeration sensitivity and a heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature in the non-working state of the battery, and performs heating and refrigeration control on the temperature adjusting device according to the lower limit of the refrigeration temperature, the refrigeration sensitivity, the upper limit of the heating temperature and the heating sensitivity in the non-working state of the battery. The lower cooling temperature limit T3 is the upper limit of the battery non-operating state temperature-cooling sensitivity, and the upper heating temperature limit T4 is the lower limit of the battery non-operating state temperature + heating sensitivity.
Preferably, the temperature range of the normal working state of the battery is controlled between 18 ℃ and 28 ℃.
Preferably, the temperature range of the non-operating state of the battery is controlled to be between 25 ℃ and 35 ℃ when the internal temperature detected by the temperature adjusting device is too high.
Preferably, the temperature range of the non-working state of the battery is controlled between 5 ℃ and 15 ℃ when the internal temperature detected by the temperature adjusting device is too low.
After the method is adopted, the temperature control system of the energy storage converter is controlled in different temperature ranges on the basis of detecting and distinguishing the working state of the energy storage converter in the energy storage system, so that the requirements of the environmental temperature of the working state of the battery and the storage temperature of the non-working state are met, the power consumption of the temperature control system is reduced, and the overall efficiency of the energy storage system is improved.
Drawings
FIG. 1 is a flow chart of a prior art energy storage temperature control start-stop control method;
FIG. 2 is a communication connection diagram of a temperature control system control method of an energy storage converter according to the present invention;
fig. 3 is a control flow chart of a control method of a temperature control system of an energy storage converter according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 2 and fig. 3, fig. 2 is a communication connection diagram of a method for controlling a temperature control system of an energy storage converter according to the present invention; fig. 3 is a control flowchart of a method for controlling a temperature control system of an energy storage converter according to the present invention, and this embodiment discloses a method for controlling a temperature control system of an energy storage converter, which includes an energy storage converter, an energy storage energy management system, and a temperature adjustment device for adjusting the temperature of a battery of the energy storage converter, and the method further includes: the working state of the energy storage converter is detected by a working state detection module of the energy storage converter, the working state detection module sends the detected working state to the energy storage energy management system,
when the energy storage converter is in an operating state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, and sets the lower cooling temperature limit and the upper heating temperature limit of the temperature adjusting device according to the temperature range of the normal working state of the battery, so that the temperature adjusting device is subjected to heating and cooling control; the ranges specifically include: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower refrigeration temperature limit T1 of the temperature range of the normal working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T2 of the temperature range of the normal working state of the battery, the temperature adjusting device stops heating operation. The parameters set by the temperature adjusting device in the normal working state of the battery further comprise refrigerating sensitivity and heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, and the temperature adjusting device is subjected to heating and refrigerating control according to the refrigerating temperature lower limit, the refrigerating sensitivity, the heating temperature upper limit and the heating sensitivity of the temperature range in the normal working state of the battery. The lower limit of the cooling temperature T1 is equal to the upper limit of the normal operating state temperature of the battery-cooling sensitivity, and the upper limit of the heating temperature T2 is equal to the lower limit of the normal operating state temperature of the battery + heating sensitivity.
When the energy storage converter is in a non-operation state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature requirement of the battery in a non-operation state, and sets a lower cooling temperature limit and an upper heating temperature limit of the temperature adjusting device according to the temperature range of the battery in the non-operation state, so that the temperature adjusting device is subjected to a heating and cooling control range; the method specifically comprises the following steps: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower refrigeration temperature limit T3 set by EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T4 set by EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops heating operation. The parameters set by the temperature adjusting device in the non-working state of the battery further comprise refrigeration sensitivity and heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature in the non-working state of the battery, and the temperature adjusting device is subjected to heating and refrigeration control according to the lower refrigeration temperature limit, the refrigeration sensitivity, the upper heating temperature limit and the heating sensitivity of the temperature range in the non-working state of the battery. The lower cooling temperature limit T3 is the upper limit of the battery non-operating state temperature-cooling sensitivity, and the upper heating temperature limit T4 is the lower limit of the battery non-operating state temperature + heating sensitivity.
The working state detection of the energy storage converter is transmitted to the energy storage energy management system by the energy storage converter through communication, the energy storage energy management system reads the working state of the energy storage converter, and as shown in fig. 3, the working state of the energy storage converter can be divided into two types: an operational state and a non-operational state.
Example two
Because the comfortable temperature of the battery of the energy storage converter during working is between 18 ℃ and 28 ℃, in this embodiment, when the energy storage energy management system judges that the energy storage converter is in the operating state, the lower limit of the refrigeration temperature T1 is set to be 18 ℃, and the refrigeration sensitivity is set to be 10 ℃; when the energy storage energy management system judges that the energy storage converter is in the running state, the upper limit T2 of the heating temperature is set to be 28 ℃, and the heating sensitivity is set to be 10 ℃.
When the energy storage converter is in an operating state and the temperature adjusting device detects that the internal temperature is higher than 28 ℃, the temperature adjusting device automatically starts up for refrigeration, and when the temperature adjusting device detects that the internal temperature is lower than 18 ℃, the temperature adjusting device automatically shuts down; when the energy storage converter is in an operating state and the temperature adjusting device detects that the internal temperature is lower than 18 ℃, the temperature adjusting device automatically starts to heat, and when the temperature adjusting device detects that the internal temperature is higher than 28 ℃, the temperature adjusting device automatically shuts down.
EXAMPLE III
The suitable storage temperature of the battery in the non-working state is between 5 ℃ and 35 ℃,
in the embodiment, when the energy storage energy management system judges that the energy storage converter is in a non-operation state, the lower limit of the refrigeration temperature T3 is set to be 25 ℃, and the refrigeration sensitivity is set to be 10 ℃;
when the energy storage converter is in a non-operation state and the temperature adjusting device detects that the internal temperature is higher than 35 ℃, the temperature adjusting device automatically starts up for refrigeration, and when the temperature adjusting device detects that the internal temperature is lower than 25 ℃, the temperature adjusting device automatically shuts down.
Example four
In the embodiment, when the energy storage energy management system judges that the energy storage converter is in a non-operation state, the upper heating temperature limit T4 is set to be 15 ℃, and the heating sensitivity is set to be 10 ℃.
When the energy storage converter is in a non-operation state and the temperature adjusting device detects that the internal temperature is lower than 5 ℃, the temperature adjusting device automatically starts up to heat, and when the temperature adjusting device detects that the internal temperature is higher than 15 ℃, the temperature adjusting device automatically shuts down.
It should be understood that the above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by the present specification and drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A control method of a temperature control system of an energy storage converter comprises the energy storage converter, an energy storage energy management system and a temperature adjusting device for adjusting the temperature of a battery of the energy storage converter, and is characterized in that: the control method further comprises the following steps: the working state of the energy storage converter is detected through a working state detection module of the energy storage converter, the working state detection module sends the detected working state to the energy storage energy management system, when the energy storage converter is in a running state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, and the lower cooling temperature limit and the upper heating temperature limit of the temperature adjusting device are set according to the temperature range of the normal working state of the battery, so that the temperature adjusting device is subjected to heating and cooling control;
when the energy storage converter is in a non-operation state, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature requirement of the battery in a non-operation state, and sets the lower cooling temperature limit and the upper heating temperature limit of the temperature adjusting device according to the temperature range of the battery in the non-operation state, so that the temperature adjusting device is subjected to heating and cooling control.
2. The method for controlling the temperature control system of the energy storage converter according to claim 1, wherein: "set up temperature adjusting device's refrigeration temperature lower limit and heating temperature upper limit according to battery normal operating condition temperature range to carry out heating refrigeration control range to temperature adjusting device" specifically includes: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower refrigeration temperature limit T1 of the temperature range of the normal working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the normal working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T2 of the temperature range of the normal working state of the battery, the temperature adjusting device stops heating operation.
3. The method for controlling the temperature control system of the energy storage converter according to claim 1, wherein: "set up the refrigeration temperature lower limit and the heating temperature upper limit of temperature regulation apparatus according to battery non-operating condition temperature range to carry out heating refrigeration control range to temperature regulation apparatus" specifically includes: when the temperature adjusting device detects that the temperature in the temperature adjusting device is higher than the upper temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts the refrigeration work, and when the temperature adjusting device detects that the temperature in the temperature adjusting device is lower than the lower cooling temperature limit T3 set by the EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops the refrigeration work; when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is lower than the lower temperature limit of the temperature range of the non-working state of the battery, the temperature adjusting device starts heating operation, and when the temperature adjusting device detects that the internal temperature of the temperature adjusting device is higher than the upper heating temperature limit T4 set by EMS in the temperature range of the non-working state of the battery, the temperature adjusting device stops heating operation.
4. The method for controlling the temperature control system of the energy storage converter according to claim 1, wherein: the parameters set by the temperature adjusting device in the normal working state of the battery further comprise refrigerating sensitivity and heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the ambient temperature of the working state of the battery, sets the lower refrigerating temperature limit, the refrigerating sensitivity, the upper heating temperature limit and the heating sensitivity of the temperature adjusting device according to the temperature range of the normal working state of the battery, and controls the heating and the refrigerating of the temperature adjusting device. The lower limit of the cooling temperature T1 is equal to the upper limit of the normal operating state temperature of the battery-cooling sensitivity, and the upper limit of the heating temperature T2 is equal to the lower limit of the normal operating state temperature of the battery + heating sensitivity.
5. The method for controlling the temperature control system of the energy storage converter according to claim 1, wherein: the parameters set by the temperature adjusting device in the non-working state of the battery further comprise refrigerating sensitivity and heating sensitivity, the energy storage energy management system adjusts the temperature of the temperature adjusting device according to the storage temperature of the non-working state of the battery, sets the lower refrigerating temperature limit, the refrigerating sensitivity, the upper heating temperature limit and the heating sensitivity of the temperature adjusting device according to the temperature range of the non-working state of the battery, and controls the heating and the refrigerating of the temperature adjusting device. The lower cooling temperature limit T3 is the upper limit of the battery non-operating state temperature-cooling sensitivity, and the upper heating temperature limit T4 is the lower limit of the battery non-operating state temperature + heating sensitivity.
6. The method for controlling the temperature control system of the energy storage converter according to claim 4, wherein: the temperature range of the normal working state of the battery is controlled between 18 ℃ and 28 ℃.
7. The method for controlling the temperature control system of the energy storage converter according to claim 5, wherein: when the internal temperature detected by the temperature adjusting device is too high, the temperature range of the non-working state of the battery is controlled between 25 ℃ and 35 ℃.
8. The method for controlling the temperature control system of the energy storage converter according to claim 5, wherein: when the temperature detected by the temperature adjusting device is too low, the temperature range of the non-working state of the battery is controlled between 5 ℃ and 15 ℃.
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