CN113054269B - Heat exchange comprehensive control method for battery changing station - Google Patents
Heat exchange comprehensive control method for battery changing station Download PDFInfo
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- CN113054269B CN113054269B CN201911368219.6A CN201911368219A CN113054269B CN 113054269 B CN113054269 B CN 113054269B CN 201911368219 A CN201911368219 A CN 201911368219A CN 113054269 B CN113054269 B CN 113054269B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a heat exchange comprehensive control method for a power conversion station, which comprises the following steps: respectively presetting normal temperature ranges of the battery and the charging module; the temperature of the charging module and the temperature of the battery are respectively collected, and the heat exchange control is carried out on the battery and/or the charging module according to the collected temperatures. In the invention, the charging modules are separately arranged corresponding to the batteries, thereby reducing the concentration of heat. In a normal temperature range, the temperature is uniform, and the temperature of the whole power station is controlled within a reasonable range by natural heat dissipation. When the temperature exceeds the normal temperature range, the internal heat can be discharged outwards through the external heat exchange unit to reduce the temperature of the battery replacement station, or the temperature of the battery replacement station is increased by absorbing the heat from the outside. In the control process, the trigger condition is reasonably set, and the switching frequency in operation is reduced.
Description
Technical Field
The invention relates to a comprehensive control method for heat exchange of a power conversion station.
Background
The conventional charging machine for the battery replacement station is installed in a cabinet type and is used for centralized power distribution. The charging cabinets are arranged in a centralized manner in a single space of the whole power conversion station (the space is used for arranging power distribution and air conditioning devices), and the battery rack is arranged in another space of the power conversion station, namely a charging room. Each charger in the charging cabinet outputs 2 direct current output power lines and a group of charging control lines (including new CAN communication and other control lines between the charger and the battery), and the lengths of the lines are 3-20 meters according to the number and arrangement conditions of the batteries in the station.
Because the alternating current is input into a charger (mainly a charging module), the alternating current is rectified by the charger to become direct current and finally reenters the battery. At the end of the process, about 10% of the electricity is lost and eventually converted to heat for entry into the environment. Estimated by 6 30KW chargers in each charging cabinet, about 20KW of power consumption is consumed. Although each charging cabinet is provided with an exhaust device, the charger adopts a drawer type layout, the exhaust effect is common, heat accumulation is caused, the temperature of the charger is increased, and the damage of the charger is caused.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, heat is easy to accumulate and a charging module is easy to heat up and is damaged due to centralized power distribution of the charging module, and provides a heat exchange comprehensive control method for a power exchanging station.
The invention solves the technical problems through the following technical scheme:
a heat exchange comprehensive control method for a power exchanging station comprises a plurality of charging bins for accommodating and charging batteries and a heat exchange control system, and is characterized in that the charging bins comprise charging modules for charging the batteries, and the heat exchange comprehensive control method comprises the following steps:
respectively presetting normal temperature ranges of the battery and the charging module;
the temperature of the charging module and the temperature of the battery are respectively collected, and the heat exchange control is carried out on the battery and/or the charging module according to the collected temperatures.
Preferably, the heat exchange control of the battery and/or the charging module according to the collected temperature comprises the following steps:
comparing the collected temperature with normal temperature ranges of the charging module and the battery;
if the collected temperature is kept within the normal temperature range, controlling a heat exchange medium to circularly flow through a battery or a charging module in the power conversion station;
if the collected temperature changes from the normal temperature range to exceed the normal temperature range, the heat exchange medium circularly flows through a battery or a charging module in the power conversion station and is connected into a heat exchange unit to actively exchange heat;
and if the acquired temperature is kept within the range exceeding the normal temperature, the heat exchange medium circularly flows through the battery or the charging module in the battery replacing station and is kept connected to the heat exchange unit for actively exchanging heat.
In the scheme, the charging modules are separately arranged corresponding to the batteries, so that the concentration of heat is reduced. Meanwhile, the heat generated by charging of the charging module is uniformly dissipated into the open space through the flowing of a heat exchange medium such as liquid in the whole charging station, and the temperature of the whole charging station is controlled within a reasonable range by means of natural heat dissipation, namely, internal circulation.
Under the lower circumstances of temperature, the heat that the module that charges produced not only is gived off, and the heat that heat transfer medium took away moreover can also carry out the heat with the battery and balance, improves the temperature of battery, avoids the battery reduction of charge efficiency under the low temperature state or even the unable circumstances of charging.
When the temperature exceeds the normal temperature range, the internal passive heat dissipation inside the charging unit cannot meet the requirements of the charging module and the battery. The temperature of the power conversion station can be reduced by discharging internal heat outwards through the external heat exchange unit, or the temperature of the power conversion station can be increased by absorbing heat from the outside. In addition, under the low temperature condition, select to charge the module and do not insert and absorb heat, avoid thermal waste.
Preferably, a switching threshold value of the battery and the charging module is preset, the switching threshold value is located in the normal temperature range, and the acquired temperature is compared with the switching threshold value;
if the temperature change exceeds the normal temperature range and reaches the switching threshold value, the heat exchange unit is closed, and the heat exchange medium circularly flows through the battery or the charging module in the battery changing station.
In the temperature change process, the change of the circulation state of the heat exchange medium is only carried out when the temperature changes from the normal temperature range to be beyond the normal temperature range and the temperature change reaches the switching threshold value, namely, the connection or the connection of the heat exchange unit is switched, so that the switching frequency in the operation process can be reduced, the energy loss caused by the starting and the stopping of equipment is reduced, and the faults are reduced.
Preferably, the switching threshold includes a high temperature threshold and/or a low temperature threshold, wherein the step of turning off the heat exchange unit and circulating the heat exchange medium through the battery or the charging module in the power conversion station includes:
at a low temperature threshold, the heat exchange unit is disconnected, external heat absorption is stopped, and a heat exchange medium circularly flows through a battery or a charging module in the power conversion station;
and at a high temperature threshold, the connection of the heat exchange unit is disconnected, external heat dissipation is stopped, and the heat exchange medium circularly flows through the battery or the charging module in the battery replacement station.
By setting the high temperature threshold and/or the low temperature threshold, the heat exchange unit can be disconnected in a high temperature range and in a low temperature range respectively. Therefore, the internal circulation of the heat exchanger can be realized in a sufficient time after the external heat exchange unit is disconnected no matter the heat dissipation is finished or the heat absorption is finished.
Preferably, the low temperature threshold is set to be lower than the high temperature threshold, wherein the low temperature threshold is higher than the lower limit of the normal temperature range, and the high temperature threshold is lower than the upper limit of the normal temperature range.
Preferably, a battery temperature sensor and/or a charging module temperature sensor are arranged in the battery replacement station, wherein the battery temperature sensor is used for detecting the temperature of the battery, the charging module temperature sensor is used for detecting the temperature of the charging module, and the temperature is determined according to the detection value of the battery temperature sensor and/or the charging module temperature sensor. The temperature condition of each battery or each charging module is grasped through the battery temperature sensor and/or the charging module temperature sensor, and a basis is provided for circulation of each battery or each charging module in a next step.
Preferably, if the temperature changes from the normal temperature range to exceed the normal temperature range, the battery and/or the charging module which needs to be connected with the heat exchange medium is selected according to the detection value of the battery temperature sensor and/or the charging module temperature sensor. For example, under the condition of low temperature, the charging module is selected not to be connected to absorb heat, so that the waste of heat is avoided.
Preferably, an external liquid pump is arranged, the heat exchange medium is made to circularly flow through the liquid pump, and the liquid pump is kept to continuously run in the circulation process of the heat exchange medium.
Preferably, if the temperature changes from the normal temperature range to a temperature exceeding the normal temperature range, the step of circulating the heat exchange medium through the battery or the charging module in the battery swapping station and accessing the heat exchange unit to actively exchange heat includes:
in the range higher than the normal temperature, the heat exchange medium circularly flows through a battery or a charging module in the power conversion station and is connected into the heat exchange unit to actively dissipate heat;
and in the range lower than the normal temperature, the heat exchange medium circularly flows through the batteries in the battery replacement station and is connected into the heat exchange unit to actively absorb heat.
Preferably, in a range higher than the normal temperature, the step of circulating the heat exchange medium through the battery or the charging module in the power conversion station and connecting the heat exchange medium to the heat exchange unit for active heat dissipation includes:
in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the charging module and/or an external heat dissipation plate of the charging module and is connected into the heat exchange unit to actively dissipate heat; or
And in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively dissipate heat.
Preferably, in a range lower than the normal temperature, the step of circulating the heat exchange medium through the battery in the power conversion station and entering the heat exchange unit to actively absorb heat includes:
and in the range lower than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively absorb heat.
The positive progress effects of the invention are as follows: in the invention, the charging modules are separately arranged corresponding to the batteries, thereby reducing the concentration of heat. In a normal temperature range, the heat is uniform, and the temperature of the whole power station is controlled within a reasonable range by natural heat dissipation. When the temperature exceeds the normal temperature range, the internal heat can be discharged outwards through the external heat exchange unit to reduce the temperature of the battery replacement station, or the temperature of the battery replacement station is increased by absorbing the heat from the outside. In the control process, the trigger condition is reasonably set, and the switching frequency in operation is reduced.
Drawings
Fig. 1 is a flowchart of a heat exchange comprehensive control method for a power conversion station according to a preferred embodiment of the present invention.
Fig. 2 is a structural diagram of a swapping station according to a preferred embodiment of the invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1-fig. 2, this embodiment discloses a comprehensive control method for heat exchange of a power exchanging station, where the comprehensive control method for heat exchange of the power exchanging station includes the following steps:
step S101, respectively presetting normal temperature ranges of a battery and a charging module;
step S102, collecting temperatures of a charging module and a battery respectively;
and S103, performing heat exchange control on the battery pack and/or the charging module according to the acquired temperature.
The embodiment further includes presetting a switching threshold of the battery pack and the charging module, where the switching threshold is located within the normal temperature range, and step S103 further includes comparing the collected temperature with the switching threshold, where step S103 specifically includes:
step S1030: comparing the obtained temperature with a switching threshold and a normal temperature range;
step S1031: and if the collected temperature changes from the normal temperature range to a temperature exceeding the normal temperature range, circulating a heat exchange medium through a battery or a charging module in the battery changing station, and accessing a heat exchange unit to actively exchange heat.
Step S1032: and if the temperature changes from the normal temperature range to a temperature exceeding the normal temperature range, the heat exchange medium circularly flows through a battery or a charging module in the battery changing station and is connected to the heat exchange unit for actively exchanging heat.
Step S1033: under other variation conditions, the original circulating state of the heat exchange medium is maintained.
Wherein step S1033 includes:
if the collected temperature is kept within the normal temperature range, controlling a heat exchange medium to circularly flow through a battery or a charging module in the power conversion station;
and if the acquired temperature is kept in a range exceeding the normal temperature, circulating the heat exchange medium through a battery or a charging module in the battery replacement station, and keeping the heat exchange medium connected to the heat exchange unit for actively exchanging heat.
In step S102, acquiring the temperatures of the charging module and the battery pack specifically includes: the temperature of a plurality of points in the charging module and the battery is detected by using an optical fiber temperature sensor or other temperature sensors, and judgment is carried out according to the highest temperature in the collected temperatures.
In the scheme, the charging modules are separately arranged corresponding to the batteries, so that the concentration of heat is reduced. Meanwhile, the heat generated by charging of the charging module is uniformly dissipated to an open space through the flowing of a liquid heat exchange medium in the whole charging station, the temperature of the whole charging station is controlled within a reasonable range by means of natural heat dissipation, and the circulation is also inner circulation.
Under the lower condition of temperature, the heat that the module that charges produced not only is gived off, and the heat that the heat transfer medium took away can also carry out the heat with the battery in addition and equalize, improves the temperature of battery, avoids the battery at the reduction of low temperature state charge efficiency or even the unable circumstances of charging.
When the temperature exceeds the normal temperature range, the internal passive heat dissipation inside the charging unit cannot meet the requirements of the charging module and the battery. The temperature of the power conversion station can be reduced by discharging the internal heat outwards through the external heat exchange unit, or the temperature of the power conversion station can be increased by absorbing the heat from the outside. In addition, under the low temperature condition, select to charge the module and do not insert and absorb heat, avoid thermal waste.
In addition, in the process of temperature change, the change of the circulation state of the heat exchange medium is only carried out when the temperature changes from the normal temperature range to be beyond the normal temperature range and the temperature change reaches the switching threshold value, namely, the connection or the disconnection of the heat exchange unit is switched, so that the switching frequency in the operation process can be reduced, the energy loss caused by the start and the stop of equipment can be reduced, and the faults can be reduced.
For example, the normal temperature range is set to a temperature of 10 degrees celsius to 30 degrees celsius. The switching threshold is set at 15 degrees celsius and 25 degrees celsius. In the low temperature range that is less than 10 degrees centigrade, insert heat transfer unit and heat the back, after reaching 15 degrees centigrade, have certain distance in the lower limit 10 degrees centigrade of normal temperature range, maintain the temperature through the inner loop that does not insert heat transfer unit this moment. The temperature does not drop to 10 degrees celsius for a significant period of time. At the high temperature range that is higher than 30 degrees centigrade, insert the heat transfer unit and dispel the heat back, after reaching 25 degrees centigrade, compare in the upper limit 30 degrees centigrade of normal temperature scope and have certain distance, maintain the temperature through the internal cycle that does not insert the heat transfer unit this moment. The temperature does not rise to 30 degrees celsius for a significant period of time.
In this embodiment, the switching threshold includes a high temperature threshold and/or a low temperature threshold, where the step S1032 of closing the access heat exchange unit and circulating the heat exchange medium through the battery or the charging module in the battery changing station includes:
at a low temperature threshold, the heat exchange unit is disconnected, external heat absorption is stopped, and a heat exchange medium circularly flows through a battery or a charging module in the power conversion station; or
And at a high temperature threshold, the connection of the heat exchange unit is disconnected, external heat dissipation is stopped, and the heat exchange medium circularly flows through the battery or the charging module in the battery replacement station.
By setting the high-temperature threshold and the low-temperature threshold, the disconnection of the heat exchange unit can be realized in a high-temperature range and in a low-temperature range respectively. Therefore, the internal circulation is performed within enough time after the external heat exchange unit is disconnected no matter the heat dissipation is completed or the heat absorption is completed.
In this embodiment, the low temperature threshold is set to be lower than the high temperature threshold, wherein the low temperature threshold is higher than the lower limit of the normal temperature range, and the high temperature threshold is lower than the upper limit of the normal temperature range. For example, the normal temperature range is set to a temperature of between 10 degrees celsius and 30 degrees celsius. When the high temperature range is greater than 30 degrees centigrade, it is more efficient to set the switching threshold to 25 degrees centigrade than to 15 degrees centigrade, so that the waste of unnecessary energy generated by reducing 25 degrees centigrade to 15 degrees centigrade can be reduced. When the low temperature range is less than 10 degrees centigrade, it is significantly more efficient to set the switching threshold to 15 degrees centigrade than to 25 degrees centigrade, thereby reducing the waste of unnecessary energy generated when the temperature rises from 15 degrees centigrade to 25 degrees centigrade.
In this embodiment, a battery temperature sensor and/or a charging module temperature sensor are disposed in the battery replacement station, wherein the battery temperature sensor is configured to detect a temperature of a battery, the charging module temperature sensor is configured to detect a temperature of a charging module, and the temperature is determined according to a detection value of the battery temperature sensor and/or the charging module temperature sensor. The temperature condition of each battery or charging module is grasped through the battery temperature sensor and/or the charging module temperature sensor, and a basis is provided for circulation of each battery or charging module in a targeted manner.
In this embodiment, if the temperature changes from the normal temperature range to a temperature exceeding the normal temperature range, the battery and/or the charging module that needs to be connected to the heat exchange medium is selected according to the detection values of the battery temperature sensor and/or the charging module temperature sensor. For example, under the condition of low temperature, the charging module is selected not to be connected to absorb heat, so that the waste of heat is avoided.
In this embodiment, an external liquid pump is provided, the heat exchange medium is circulated by the liquid pump, and the liquid pump is kept running continuously during the circulation of the heat exchange medium.
In this embodiment, if the temperature changes from the normal temperature range to a temperature exceeding the normal temperature range, the step S1031 of circulating the heat exchange medium through the battery or the charging module in the power conversion station and entering the heat exchange unit to actively perform heat exchange includes:
in the range higher than the normal temperature, the heat exchange medium circularly flows through a battery or a charging module in the power conversion station and is connected into the heat exchange unit to actively dissipate heat;
and in the range lower than the normal temperature, the heat exchange medium circularly flows through the battery in the power exchanging station and is connected into the heat exchange unit to actively absorb heat.
In this embodiment, in a range higher than the normal temperature, the step of circulating the heat exchange medium through the battery or the charging module in the power conversion station and entering the heat exchange unit to actively dissipate heat includes:
in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the charging module and/or an external heat dissipation plate of the charging module and is connected into the heat exchange unit to actively dissipate heat; or
And in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively dissipate heat.
In this embodiment, in a range lower than the normal temperature, the step of circulating a heat exchange medium through a battery in the power conversion station and entering the heat exchange unit to actively absorb heat includes:
and in the range lower than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively absorb heat.
Referring to fig. 2, this embodiment further discloses a power swapping station that can implement the method of this embodiment. The system comprises a liquid pump 100, a charging unit 200, an electromagnetic valve 210, an internal cooling pipeline 220 of a charging module, an external cooling plate 230 of the charging module, an internal cooling pipeline 240 of a battery, a charging heat exchange plate 250 connected with the battery and a heat exchange unit 300.
In step S103, the internal cooling circuit 220 of the charging module, the external heat dissipation plate 230 of the charging module, the internal cooling circuit 240 of the battery, and the charging heat exchange plate 250 connected to the battery are connected to perform internal circulation. After the heat exchange unit 300 is connected, the solenoid valve 210 can be selectively closed at low temperature, so that the battery can be heated independently.
In the invention, the charging modules are separately arranged corresponding to the batteries, thereby reducing the concentration of heat. In a normal temperature range, the temperature is uniform, and the temperature of the whole power station is controlled within a reasonable range by natural heat dissipation. When the temperature exceeds the normal temperature range, the internal heat can be discharged outwards through the external heat exchange unit to reduce the temperature of the battery replacement station, or the temperature of the battery replacement station is increased by absorbing the heat from the outside. In the control process, the trigger condition is reasonably set, and the switching frequency in operation is reduced.
While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The heat exchange comprehensive control method for the battery replacement station is characterized in that a charging module for charging the battery is arranged in the charging bin, and the heat exchange comprehensive control method comprises the following steps:
respectively presetting normal temperature ranges of the battery and the charging module;
respectively collecting the temperatures of the charging module and the battery, and performing heat exchange control on the battery and/or the charging module according to the collected temperatures;
wherein, according to the temperature of gathering to battery and/or charge the module and carry out heat transfer control including the following step: comparing the collected temperature with normal temperature ranges of the charging module and the battery; if the collected temperature changes from the normal temperature range to exceed the normal temperature range, the heat exchange medium circularly flows through a battery or a charging module in the power conversion station and is connected into a heat exchange unit to actively exchange heat;
presetting a switching threshold value of the battery and the charging module, wherein the switching threshold value is positioned in the normal temperature range, and comparing the acquired temperature with the switching threshold value;
if the temperature change exceeds the normal temperature range and reaches the switching threshold value, the heat exchange unit is closed, and the heat exchange medium circularly flows through the battery and the charging module in the battery changing station.
2. The control method according to claim 1, wherein the step of controlling the heat exchange of the battery and/or the charging module according to the collected temperature further comprises the steps of:
if the collected temperature is kept within the normal temperature range, controlling a heat exchange medium to circularly flow through a battery and a charging module in the power conversion station;
and if the acquired temperature is kept within the range exceeding the normal temperature, the heat exchange medium circularly flows through the battery and the charging module in the battery replacing station and is kept connected to the heat exchange unit for actively exchanging heat.
3. The power station heat exchange comprehensive control method as claimed in claim 1, wherein the switching threshold includes a high temperature threshold and/or a low temperature threshold, and wherein the step of turning off the heat exchange unit and circulating a heat exchange medium through a battery and a charging module in the power station comprises:
at a low temperature threshold, the heat exchange unit is disconnected, external heat absorption is stopped, and a heat exchange medium circularly flows through the battery and the charging module in the power conversion station;
and at a high temperature threshold, the connection of the heat exchange unit is disconnected, external heat dissipation is stopped, and a heat exchange medium circularly flows through the battery and the charging module in the battery replacing station.
4. The power station heat exchange integrated control method as claimed in claim 3, wherein the low temperature threshold is set to be lower than the high temperature threshold, wherein the low temperature threshold is higher than a lower limit of the normal temperature range, and the high temperature threshold is lower than an upper limit of the normal temperature range.
5. The power station heat exchange integrated control method as claimed in claim 1, wherein a battery temperature sensor and/or a charging module temperature sensor are/is provided in the power station, wherein the battery temperature sensor is used for detecting the temperature of a battery, the charging module temperature sensor is used for detecting the temperature of a charging module, and the temperature is determined according to the detection value of the battery temperature sensor and/or the charging module temperature sensor.
6. The power station heat exchange integrated control method according to claim 5, wherein if the temperature changes from the normal temperature range to exceed the normal temperature range, the battery and/or the charging module which needs to be accessed with the heat exchange medium is selected according to detection values of the battery temperature sensor and/or the charging module temperature sensor.
7. The integrated control method for heat exchange of the battery replacement station as claimed in claim 1, wherein an external liquid pump is arranged, the heat exchange medium is made to flow circularly through the liquid pump, and the liquid pump is kept to operate continuously during circulation of the heat exchange medium.
8. The integrated control method for heat exchange of the power conversion station as claimed in any one of claims 1 to 7, wherein the step of circulating a heat exchange medium through a battery and a charging module in the power conversion station and accessing a heat exchange unit to actively exchange heat comprises:
in the range higher than the normal temperature, the heat exchange medium circularly flows through the battery and the charging module in the battery replacement station and is connected into the heat exchange unit to actively dissipate heat;
and in the range lower than the normal temperature, the heat exchange medium circularly flows through the batteries in the battery replacement station and is connected into the heat exchange unit to actively absorb heat.
9. The integrated control method for heat exchange of the power conversion station as claimed in claim 8, wherein in the range higher than the normal temperature, the step of circulating the heat exchange medium through the battery and the charging module in the power conversion station and accessing the heat exchange unit to actively dissipate heat comprises:
in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the charging module and/or an external heat dissipation plate of the charging module and is connected into the heat exchange unit to actively dissipate heat; or
And in the range higher than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively dissipate heat.
10. The integrated control method for heat exchange of the power conversion station as claimed in claim 8, wherein in the range lower than the normal temperature, the step of circulating a heat exchange medium through the battery in the power conversion station and accessing the heat exchange unit to actively absorb heat comprises:
and in the range lower than the normal temperature, the heat exchange medium circularly flows through an internal cooling pipeline of the battery and/or a charging heat exchange plate connected with the battery, and is connected into the heat exchange unit to actively absorb heat.
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| CN201911368219.6A CN113054269B (en) | 2019-12-26 | 2019-12-26 | Heat exchange comprehensive control method for battery changing station |
| PCT/CN2020/139968 WO2021129858A1 (en) | 2019-12-26 | 2020-12-28 | Method for controlling heat exchange integration of battery changing station |
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| CN201911368219.6A CN113054269B (en) | 2019-12-26 | 2019-12-26 | Heat exchange comprehensive control method for battery changing station |
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| CN114552062A (en) * | 2022-02-24 | 2022-05-27 | 深圳威迈斯新能源股份有限公司 | Battery changing station waste heat utilization system and control method thereof |
| CN115332684B (en) * | 2022-10-13 | 2023-01-20 | 宇龙时代智能科技有限公司 | Temperature control method and temperature control system for new energy automobile power change station in alpine region |
| CN117458046B (en) * | 2023-12-21 | 2024-04-19 | 深圳市铂纳特斯智能装备股份有限公司 | Temperature control system and temperature control method in lithium battery formation step |
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| CN101247050A (en) * | 2007-04-13 | 2008-08-20 | 北京木牛电气技术有限责任公司 | DC power device and its charge and discharge monitoring method |
| CN104112883B (en) * | 2013-04-22 | 2016-09-07 | 南京德朔实业有限公司 | The cooling charging device of battery bag and method |
| US10355327B1 (en) * | 2015-10-30 | 2019-07-16 | Loon Llc | Dynamic battery pack thermal management |
| CN106972207B (en) * | 2016-11-11 | 2020-02-28 | 蔚来汽车有限公司 | Modular and expandable temperature regulation system |
| CN106485840A (en) * | 2016-11-14 | 2017-03-08 | 东莞市奇立电源有限公司 | A kind of unattended cabinet type change electric system and its change method for electrically |
| CN206195428U (en) * | 2016-12-02 | 2017-05-24 | 李簦芸 | Intelligent integrated charges and removes battery swapping station convenient to heat dissipation |
| CN206194923U (en) * | 2016-12-03 | 2017-05-24 | 深圳名飞远科技有限公司 | Heat management device for power batteries |
| CN108270047B (en) * | 2017-01-03 | 2019-12-13 | 北京科凌电动车辆股份有限公司 | Battery box system with automatic temperature adjustment function |
| CN206441840U (en) * | 2017-01-06 | 2017-08-25 | 四川绿鑫电源有限公司 | A kind of temperature control equipment of battery pack and the battery pack with the device |
| CN206490469U (en) * | 2017-02-16 | 2017-09-12 | 上海蔚来汽车有限公司 | Charging rack with heat recovery function |
| CN108539327B (en) * | 2018-05-25 | 2020-10-09 | 上海汽车集团股份有限公司 | Power battery liquid heating system based on liquid cooling system and control method thereof |
| CN109037831B (en) * | 2018-06-25 | 2021-03-19 | 蔚来(安徽)控股有限公司 | Heat management system, control method thereof and charging and battery replacing station |
| CN209496976U (en) * | 2018-12-24 | 2019-10-15 | 杭州烽正制冷科技有限公司 | A kind of power battery cooling device |
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