CN114268156A - Charging and battery-replacing cabinet - Google Patents
Charging and battery-replacing cabinet Download PDFInfo
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- CN114268156A CN114268156A CN202111623762.3A CN202111623762A CN114268156A CN 114268156 A CN114268156 A CN 114268156A CN 202111623762 A CN202111623762 A CN 202111623762A CN 114268156 A CN114268156 A CN 114268156A
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- 238000007600 charging Methods 0.000 title claims abstract description 118
- 238000004891 communication Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010278 pulse charging Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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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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- 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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention provides a charging and power-exchanging cabinet, which is used for charging a plurality of battery packs and comprises: a cabinet body; a converter group including m AC/DC converters and m DC/DC converter groups, each DC/DC converter group including n DC/DC converters; the battery bin group comprises m multiplied by n battery bins, and each battery bin is internally provided with a charging interface; the switch group comprises m series switch groups and m parallel switch groups, each series switch group comprises n series switches, and each parallel switch group comprises n-1 parallel switches; and the control device is in communication connection with the battery pack placed in the battery bin and is used for controlling the converter group and the switch group to work according to the performance state of the battery pack so as to charge the battery pack. The invention can lead the converter group to be used in a centralized way by controlling the switch group on the premise of not increasing the input power of the charging and converting cabinet, and can carry out the prior and rapid full charging on the battery pack with high electric quantity, thereby avoiding the user from waiting for the battery to be charged for a long time.
Description
Technical Field
The invention belongs to the technical field of battery charging, and particularly relates to a charging and power-exchanging cabinet with a quick charging function.
Background
The progress of battery technology provides a strong material base for the popularization of electric vehicles, but the problems of slow battery charging and short endurance mileage always bother the further development of the electric vehicles. When the battery can not completely meet the driving range, especially the driving range of the electric vehicle for terminal distribution, the quick power change is the most effective solution for meeting the driving range of the electric vehicle.
The existing charging and replacing battery cabinets in the current market mainly use low-current independent slow charging as a main part and are difficult to meet the charging requirement of the quick-change electricity market. For example, in chinese patent CN109677288A, charging devices corresponding to the number of charging bins are installed in the charging cabinet; in chinese patent CN210390821U, a fast charging unit and a slow charging unit are installed in a charging cabinet at the same time, and the power of part of the charging units is increased to meet the fast charging requirement of part of the batteries, so the power supply load and investment of the charging equipment are increased, which is not an intensive fast charging mode. In chinese patent CN107465222A, CN107719156A, when the total power of the battery charging demand is greater than the rated power of the charging unit, the charging unit enters the output mode of limited power, the charging unit preferentially charges the first kind of battery with higher residual power, and when the power consumption peak is reached, if the full capacity battery number is greater than a certain value, the charging unit does not work, so as to ensure that the power consumption is as low as possible during the power consumption peak, and reduce the power consumption cost. The patent only lets some batteries with higher electric quantity be fully charged first from the perspective of saving cost, and does not accelerate and charge the batteries. In chinese patent CN110406407A, the alternate conduction of the fast charging main circuit is realized by controlling the transistor switch, so as to realize the fast charging process of the battery. In chinese patent CN112104048A, a plurality of relays control a plurality of chargers to supply power to a plurality of battery compartments together, which solves the problem that each battery compartment can still work normally after one charger fails, and can also realize fast charging to a certain battery compartment in principle, but the factors such as battery heating and safety during fast charging are not considered.
It should be noted that, to realize the quick charge of the battery, the battery generally needs to be at the optimal temperature of 15-35 ℃ to be quickly charged, when the temperature is too low, the quick charge will cause the lithium precipitation of the battery cathode, and when the temperature is too high, the quick charge will cause the battery temperature to be higher, which not only affects the battery life, but also can cause safety accidents such as thermal runaway and the like. Therefore, in Chinese patents CN110406407A, CN110588398A, CN210126450U, CN210652726U and CN212765825U, the battery is cooled by an air cooling mode; in chinese patent CN210608600U, cold air or hot air is used to keep the temperature of the battery in the charging and exchanging cabinet at a suitable temperature for charging; in chinese patent CN214014700U, the temperature inside the charging and replacing cabinet is always in a safe range by air cooling and temperature limiting heating elements. However, the air cooling method greatly increases the volume of the battery charging and replacing cabinet, has poor cooling effect and is easy to pollute the battery compartment. In chinese patent CN209852106U, when the battery temperature is low, the battery is heated by discharging, and this temperature control method cannot heat up and charge the battery when the battery is not charged. In chinese patent CN202435108U, in the charging cabinet mentioned in the patent, the battery in a low temperature state is heated by positive and negative pulse charging and discharging, and this way is actually to increase the battery temperature by the ohmic resistance and polarization resistance inside the battery generating heat during pulse charging and discharging, and also to damage the battery.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a charging and exchanging cabinet capable of preferentially and quickly charging a part of a high-power battery pack.
In order to achieve the purpose, the invention adopts the following technical scheme:
the present invention provides a charging and power-exchanging cabinet for charging a plurality of battery packs, each battery pack including a battery management system and a battery pack side communication unit, the charging and power-exchanging cabinet comprising: a cabinet body; the converter group is arranged in the cabinet body and comprises m AC/DC converters and m DC/DC converter groups which are in one-to-one correspondence with the m AC/DC converters, each DC/DC converter group comprises n DC/DC converters, the input end of each AC/DC converter is connected with commercial power, and the input end of each DC/DC converter is connected with the output end of the corresponding AC/DC converter; the battery bin group is arranged in the cabinet body and comprises m multiplied by n battery bins, a charging interface is arranged in each battery bin, and all the charging interfaces are correspondingly connected with the output ends of all the DC/DC converters one by one; the switch group comprises m series switch groups and m parallel switch groups, wherein the m series switch groups correspond to the m DC/DC converter groups one by one, each series switch group comprises n series switches corresponding to the n DC/DC converters one by one, each series switch is connected between the output end of the corresponding DC/DC converter and the charging interface in series, each parallel switch group comprises n-1 parallel switches, and each parallel opening is connected between the output ends of two adjacent DC/DC converters in parallel; and a control device connected in communication with the battery pack placed in the battery compartment, for controlling the operation of the converter group and the switch group according to the performance state of the battery pack placed in the battery compartment, thereby charging the battery pack, wherein the control device comprises a preset parameter storage section, a battery pack performance information acquisition request generation section, a control device side communication section, a chargeable rate judgment section, an SOC judgment section, a temperature judgment section, a DC/DC converter number calculation section, a switch control section, and a converter control section, the preset parameter storage section stores a preset chargeable rate, a preset SOC range, a preset temperature range, and a preset maximum output current of the DC/DC converter, and the battery pack performance information acquisition request generation section generates an acquisition request for acquiring the performance information of the battery pack once the battery pack is connected to a corresponding charging interface and is connected in communication with the control device, the battery pack performance information at least comprises a chargeable rate, a maximum chargeable current, a current SOC value and a current temperature value of the battery pack, the control device side communication part sends an acquisition request to the battery pack and receives the battery pack performance information from the battery pack, the chargeable rate judgment part judges whether the chargeable rate of the battery pack is not less than a preset chargeable rate, once the chargeable rate judgment part judges that the chargeable rate is not less than the preset chargeable rate, the SOC judgment part further judges whether the current SOC value is in a preset SOC range, the temperature judgment part judges whether the current temperature value is in a preset temperature range, once the SOC judgment part judges that the current SOC value is in the preset SOC range and the temperature judgment part judges that the current temperature value is in the preset temperature range, the DC/DC converter number calculation part calculates the maximum chargeable current of the battery pack and the preset maximum output current of the DC/DC converter according to the maximum chargeable current of the battery pack and the preset maximum output current of the DC/DC converter, the number of the DC/DC converters required for fast charging the battery pack is obtained through calculation, the switch control part controls the switch group to work, the output ends of the DC/DC converters in the required number are connected in parallel and then connected with the charging interfaces corresponding to the battery pack, the converter control part controls the corresponding AC/DC converters and the DC/DC converters to work, so that the battery pack is fast charged, m is an integer not less than 1, and n is an integer not less than 2.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: further comprising: heat transfer device for making the temperature control of battery package in predetermineeing the temperature range, wherein, heat transfer device contains the water tank, the heater, the water chilling unit, and the heat transfer board that contacts with the surface of battery package, controlling means still contains temperature control portion, in case carry out quick charge to the battery package, temperature judgement portion just judges whether the current temperature value of battery package is in predetermineeing the temperature range, when the current temperature value of judgement battery package of temperature judgement portion is higher than predetermineeing the temperature range, the work of temperature control portion control water chilling unit, cool off the battery package, when the current temperature value of judgement battery package of temperature judgement portion is less than predetermineeing the temperature range, the work of temperature control portion control heater, thereby heat the battery package.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: wherein, the heat transfer board sets up on the bulkhead of battery compartment.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: wherein, the surface of heat transfer board still pastes the heat conduction insulating strip.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: when the chargeable multiplying power judging part judges that the chargeable multiplying power is smaller than the preset chargeable multiplying power, the switch control part controls the switch group to work, so that the output end of the corresponding DC/DC converter is connected with the charging interface, and the converter control part controls the corresponding AC/DC converter and the corresponding DC/DC converter to work, so that the battery pack is charged slowly.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: wherein the preset chargeable multiplying power is 1-3C.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: wherein the preset SOC range is 5-95%.
In the charging and converting cabinet provided by the invention, the charging and converting cabinet can further have the following characteristics: wherein the preset temperature range is 15-35 ℃.
Action and Effect of the invention
According to the charging and exchanging cabinet of the present invention, once the chargeable multiplying power judging part judges that the chargeable multiplying power is not less than the preset chargeable multiplying power, the SOC judging part further judges whether the current SOC value is within the preset SOC range, the temperature judging part judges whether the current temperature value is within the preset temperature range, once the SOC judging part judges that the current SOC value is within the preset SOC range and the temperature judging part judges that the current temperature value is within the preset temperature range, the DC/DC converter number calculating part calculates the number of DC/DC converters required for fast charging the battery pack according to the maximum chargeable current of the battery pack and the preset maximum output current of the DC/DC converter, the switch control part controls the switch group to operate, connects the output terminals of the required number of DC/DC converters in parallel with the charging interfaces corresponding to the battery pack, the converter control part controls the corresponding AC/DC converter and DC/DC converter to work so as to rapidly charge the battery pack, so that the invention can realize the integrated use of the converter groups by controlling the switch group on the premise of not increasing the input power of the charging and converting cabinet, preferentially and rapidly fully charge the battery pack with high electric quantity, and avoid a user from waiting for the battery to charge for a long time.
Drawings
Fig. 1 is a block diagram of a charging and converting cabinet according to an embodiment of the present invention;
fig. 2 is a front view of a charging and recharging cabinet in an embodiment of the invention;
fig. 3 is a rear view of a charging and exchange cabinet in an embodiment of the invention;
FIG. 4 is an electrical schematic of a charging and conversion cabinet in an embodiment of the invention;
FIG. 5 is a block diagram showing the configuration of a control device according to an embodiment of the present invention; and
fig. 6 is a flowchart illustrating the operation of the charging and discharging cabinet to charge the battery pack according to the embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following embodiments are specifically described with reference to the attached drawings.
< example >
Fig. 1 is a block diagram of a charging and converting cabinet according to an embodiment of the present invention; fig. 2 is a front view of a charging and recharging cabinet in an embodiment of the invention; fig. 3 is a rear view of a charging and exchange cabinet in an embodiment of the invention; fig. 4 is an electrical schematic diagram of a charging and charging cabinet in an embodiment of the invention.
As shown in fig. 1 to 4, in the present embodiment, the charging and replacing cabinet 100 is used for charging a plurality of battery packs 200, and each battery pack 200 includes a battery management system and a battery pack side communication unit. The charging and exchanging cabinet 100 includes a cabinet 10, an inverter group 20, a battery compartment group 30, a switch group 40, a heat exchanging device 50, and a control device 60.
As shown in fig. 2 and 3, the cabinet 10 is a rectangular parallelepiped structure, and is used for installing the converter group 20, the battery compartment group 30, the switch group 40, the heat exchanger 50, and the controller 60.
As shown in fig. 4, the inverter group 20 is disposed in the cabinet 10, and includes m AC/DC converters 21 and m DC/DC inverter groups 22, where m is an integer not less than 1. In the present embodiment, m is 2.
The input of each AC/DC converter 21 is connected to the mains. In the present embodiment, the AC/DC converter 21 is connected to the commercial power through an AC input section including an input, a surge protector, an electricity meter, and the like.
The m DC/DC converter groups 22 correspond to the m AC/DC converters 21 one by one, each DC/DC converter group 22 includes n DC/DC converters 221, n is an integer not less than 2, and in the present embodiment, n is 3. The input of each DC/DC converter 221 is connected to the output of the corresponding AC/DC converter 21.
As shown in fig. 2 and 3, the battery compartment group 30 is disposed in the cabinet 10 and includes m × n battery compartments 31. Each battery compartment 31 is provided with a charging interface 311, and all the charging interfaces 311 are connected with the output ends of all the DC/DC converters 221 in a one-to-one correspondence manner.
As shown in fig. 4, the switch group 40 includes m series switch groups 41 and m parallel switch groups 42 corresponding to the m DC/DC converter groups 22 one to one.
Each series switch group 41 includes n series switches 411 in one-to-one correspondence with the n DC/DC converters 221, and each series switch 411 is connected in series between the output terminal of the corresponding DC/DC converter 221 and the charging interface 311 of the battery compartment 31.
Each parallel switch group 42 includes n-1 parallel switches 421, and each parallel switch 421 is connected in parallel between the output terminals of two adjacent DC/DC converters 221.
As shown in fig. 2 and 3, the heat exchanging device 50 is used for controlling the temperature of the battery pack within a preset temperature range, and includes a water tank 51, a heater (not shown), a water chiller 52, m × n heat exchanging plates 53, and a pipe 54.
The water tank 51 is fixedly arranged at the top of the cabinet body 10 and is used for containing water for heat exchange.
The heater is used to heat the water flowing into the heat exchanging plate 53, and in the present embodiment, the heater is provided in the water tank 51.
The water cooling unit 52 is fixedly disposed at the top of the cabinet 10 for cooling water flowing into the heat exchanging plate 53.
The m × n heat exchange plates 53 are disposed on the walls of the m × n battery compartments 31 in a one-to-one correspondence, and are configured to contact the outer surfaces of the battery packs 200, so as to heat or cool the battery packs 200 placed in the battery compartments 31. In this embodiment, the heat exchange plate 53 is further attached with a heat conductive insulating strip 531 on the outer surface thereof to prevent the surface of the battery pack 200 from being directly contacted and worn or even short-circuited with the surface of the heat exchange plate 53.
The pipe 54 is used to communicate the water tank 51, the heater, the water chiller unit 52, and the heat exchange plate 53 with each other.
Fig. 5 is a block diagram showing a configuration of a control device according to an embodiment of the present invention.
As shown in fig. 1, 4 and 5, the control device 60 is used for being connected with the battery pack 200 placed in the battery compartment 31 in a communication manner, and controlling the converter group 20 and the switch group 40 to operate according to the performance state of the battery pack 200 placed in the battery compartment 31, so as to charge the battery pack 200; and is also used for communicating with the heat exchanging device 50 to control the heat exchanging device 50 to work, so that the temperature of the battery pack 200 is controlled within a preset temperature range. The control device 60 includes a preset parameter storage unit 61, a battery pack performance information acquisition request generation unit 62, a chargeable rate determination unit 63, an SOC determination unit 64, a temperature determination unit 65, a DC/DC converter number calculation unit 66, a switch control unit 67, an converter control unit 68, a temperature control unit 69, a control device side communication unit 70, a temporary storage unit 71, and a control unit 72.
The preset parameter storage unit 61 stores a preset chargeable magnification, a preset SOC range, a preset temperature range, and a preset maximum output current of the DC/DC converter. In this embodiment, the preset chargeable multiplying power is 1C-3C, the preset SOC range is 5% -95%, and the preset temperature range is 15 ℃ -35 ℃.
The battery pack performance information acquisition request generation section 62 is configured to generate an acquisition request for acquiring battery pack performance information, which includes at least a chargeable rate, a maximum chargeable current, a current SOC value, and a current temperature value of the battery pack. When the battery pack 200 is connected to the corresponding charging interface 311 and is connected to the control device 60 by communication, the battery pack performance information acquisition request generation unit 62 generates an acquisition request for acquiring the battery pack performance information, and the control device side communication unit 70 transmits the acquisition request to the battery pack 200 and receives the battery pack performance information from the battery pack 200.
The chargeable rate determining part 63 is configured to determine whether the chargeable rate of the battery pack 200 is not less than a preset chargeable rate.
The SOC determination portion 64 is configured to determine whether the current SOC value is within a preset SOC range.
The temperature determination part 65 is used for determining whether the current temperature value is within a preset temperature range.
The DC/DC converter number calculation unit 66 calculates the number of DC/DC converters 221 required to quickly charge the battery pack 200, based on the maximum chargeable current of the battery pack 200 and the preset maximum output current of the DC/DC converter 221.
The switch control unit 67 controls the operation of the switch group 40, connects the output terminals of a required number of DC/DC converters 221 in parallel, and connects the output terminals to the charging interfaces 311 corresponding to the battery packs 200.
The inverter control unit 68 is configured to control the corresponding AC/DC converter 21 and DC/DC converter 221 to operate, thereby charging the battery pack.
The temperature control unit 69 is used for controlling the operation of the water chiller unit 52 to cool the battery pack; and also for controlling the heater to heat the water in the water tank 51 and then to heat the battery pack 200 by circulating the hot water. Once the battery pack is rapidly charged, the temperature judging part 65 judges whether the current temperature value of the battery pack is within a preset temperature range, and when the temperature judging part 65 judges that the current temperature value of the battery pack is higher than the preset temperature range, the temperature control part 69 controls the water cooling unit to work, so as to cool the water in the water tank 51, and then the battery pack 200 is cooled by circulating cooling water; when the temperature judging part 65 judges that the current temperature value of the battery pack is lower than the preset temperature range, the temperature control part 69 controls the heater to operate, heats the water in the water tank 51, and then heats the battery pack by circulating hot water.
The control device side communication unit 70 exchanges data information between the respective components in the control device 60 and between the control device 60 and the respective battery packs 200. For example, an acquisition request to acquire the battery pack performance information is sent to the battery pack 200, and the battery pack performance information is received from the battery pack 200.
The temporary storage section 71 is used to temporarily store data information exchanged between the respective constituent parts in the control device 60 and between the control device 60 and the respective battery packs 200, including acquisition requests transmitted to the battery packs 200 and battery pack performance information received from the battery packs 200.
The control unit 72 controls operations of the respective components of the control device 60.
The following describes the operation process of the charging and converting cabinet 100 for charging the battery pack 200 in detail with reference to the flowchart.
Fig. 6 is a flowchart illustrating the operation of the charging and discharging cabinet to charge the battery pack according to the embodiment of the present invention.
As shown in fig. 6, in this embodiment, the operation flow of the charging and converting cabinet 100 to charge the battery pack 200 includes the following steps:
in step S1, when the battery pack 200 is connected to the corresponding charging interface 311 and is communicatively connected to the control device 60, the battery pack performance information acquisition request generation unit 62 generates an acquisition request for acquiring the battery pack performance information, and the process proceeds to step S2.
In step S2, the control device side communication section 70 transmits an acquisition request to the battery pack 200, and receives the battery pack performance information from the battery pack 200, and then proceeds to step S3.
Step S3, the chargeable multiplying power judging part 63 judges whether the chargeable multiplying power of the battery pack is not less than the preset chargeable multiplying power, and if the judgment result is yes, the step S4 is proceeded; if the determination result is no, the process proceeds to step S8.
Step S4, the SOC determination part 64 determines whether the current SOC value is within the preset SOC range, the temperature determination part 65 determines whether the current temperature value is within the preset temperature range, and when the current SOC value is determined to be within the preset SOC range and the temperature determination part determines that the current temperature value is within the preset temperature range, the process goes to step S5; otherwise, the loop executes step S4.
In step S5, the DC/DC converter number calculation unit 66 calculates the number of DC/DC converters 221 required to perform the quick charge of the battery pack 200 based on the maximum chargeable current of the battery pack 200 and the preset maximum output current of the DC/DC converter 221, and then proceeds to step S6.
In step S6, the switch control unit 67 controls the operation of the switch group 40 so that the output terminals of the DC/DC converters 221, the number of which is calculated by the DC/DC converter number calculating unit 66, are connected in parallel to the charging interface 311 corresponding to the battery pack 200, and the process proceeds to step S7.
In step S7, the inverter control unit 68 controls the AC/DC converter 21 and the DC/DC converter 221 to operate, and quickly charges the battery pack, and enters the end state after full charge.
In step S8, the switch controller 67 controls the switch group 40 to operate so that the output terminal of the corresponding DC/DC converter 221 is connected to the charging interface 331, and the process proceeds to step S9.
In step S9, the inverter control unit 68 controls the AC/DC converter 21 and the DC/DC converter 221 to operate, and performs slow charging of the battery pack 200, and enters the end state after full charging.
Effects and effects of the embodiments
According to the charging and converting cabinet of the present embodiment, once the chargeable multiplying power determining portion determines that the chargeable multiplying power of the battery pack is not less than the preset chargeable multiplying power, the SOC determining portion further determines whether the current SOC value is within the preset SOC range, the temperature determining portion determines whether the current temperature value is within the preset temperature range, once the SOC determining portion determines that the current SOC value is within the preset SOC range and the temperature determining portion determines that the current temperature value is within the preset temperature range, the DC/DC converter number calculating portion calculates the number of DC/DC converters required for fast charging the battery pack according to the maximum chargeable current of the battery pack and the preset maximum output current of the DC/DC converter, the switch control portion controls the switch set to operate, and the output terminals of the DC/DC converters of the calculated number are connected in parallel to the charging interface corresponding to the battery pack, converter control portion control corresponding AC/DC converter and DC/DC converter work to for this battery package carries out quick charge, so, this embodiment can be under the prerequisite that does not increase the cabinet input power that charges, through the control to the switch block, make converter group collection antithetical couplet use, carry out the priority to the battery package of high electric quantity and be full of the electricity fast, avoid the user to wait for a long time that the battery charges.
In addition, once the battery pack is charged quickly, the temperature judging part judges whether the current temperature value of the battery pack is within a preset temperature range, and when the temperature judging part judges that the current temperature value of the battery pack is higher than the preset temperature range, the temperature control part controls the water cooling unit to work to cool the battery pack; when the temperature judging part judges that the current temperature value of the battery pack is lower than the preset temperature range, the temperature control part controls the heater to work to heat the battery pack, so that the temperature of the battery pack can be controlled in a proper range, and thermal runaway of the battery pack is effectively prevented when quick charging is carried out.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (8)
1. A charging and power-exchanging cabinet for charging a plurality of battery packs, each of the battery packs including a battery management system and a battery pack side communication unit, comprising:
a cabinet body;
the converter group is arranged in the cabinet body and comprises m AC/DC converters and m DC/DC converter groups in one-to-one correspondence with the m AC/DC converters, each DC/DC converter group comprises n DC/DC converters, the input end of each AC/DC converter is connected with commercial power, and the input end of each DC/DC converter is connected with the output end of the corresponding AC/DC converter;
the battery bin group is arranged in the cabinet body and comprises m multiplied by n battery bins, a charging interface is arranged in each battery bin, and all the charging interfaces are correspondingly connected with the output ends of all the DC/DC converters one by one;
a switch group including m series switch groups and m parallel switch groups, each series switch group including n series switches corresponding to the n DC/DC converters one by one, each series switch group being connected in series between an output terminal of the corresponding DC/DC converter and the charging interface, each parallel switch group including n-1 parallel switches, each parallel switch group being connected in parallel between output terminals of two adjacent DC/DC converters; and
the control device is in communication connection with the battery pack placed in the battery bin and is used for controlling the converter group and the switch group to work according to the performance state of the battery pack placed in the battery bin so as to charge the battery pack,
wherein the control device comprises a preset parameter storage part, a battery pack performance information acquisition request generation part, a control device side communication part, a chargeable rate judgment part, an SOC judgment part, a temperature judgment part, a DC/DC converter number calculation part, a switch control part and an converter control part,
the preset parameter storage part stores a preset chargeable multiplying power, a preset SOC range, a preset temperature range and a preset maximum output current of the DC/DC converter,
the battery pack performance information acquisition request generation section generates an acquisition request for acquiring battery pack performance information including at least a chargeable rate, a maximum chargeable current, a current SOC value, and a current temperature value of the battery pack, upon the battery pack being connected to the corresponding charging interface and being in communication with the control device,
the control device side communication section transmits the acquisition request to the battery pack and receives the battery pack performance information from the battery pack,
the chargeable multiplying power judging part judges whether the chargeable multiplying power of the battery pack is not less than the preset chargeable multiplying power,
once the chargeable multiplying power judging part judges that the chargeable multiplying power is not less than the preset chargeable multiplying power, the SOC judging part further judges whether the current SOC value is within the preset SOC range, the temperature judging part judges whether the current temperature value is within the preset temperature range,
once the SOC determination part determines that the current SOC value is within the preset SOC range and the temperature determination part determines that the current temperature value is within the preset temperature range, the DC/DC converter number calculation part calculates the number of DC/DC converters required for fast charging the battery pack according to the maximum chargeable current of the battery pack and a preset maximum output current of the DC/DC converter,
the switch control part controls the switch group to work, so that the output ends of the DC/DC converters in the number are connected in parallel and then are connected with the charging interfaces corresponding to the battery packs,
the converter control part controls the corresponding AC/DC converter and the DC/DC converter to work so as to rapidly charge the battery pack,
m is an integer not less than 1, and n is an integer not less than 2.
2. The charging and conversion cabinet of claim 1, further comprising:
the heat exchange device is used for controlling the temperature of the battery pack within the preset temperature range,
wherein the heat exchange device comprises a water tank, a heater, a water cooling unit and a heat exchange plate contacted with the outer surface of the battery pack,
the control device also comprises a temperature control part,
once the battery pack is rapidly charged, the temperature judging part judges whether the current temperature value of the battery pack is within the preset temperature range,
when the temperature judging part judges that the current temperature value of the battery pack is higher than the preset temperature range, the temperature control part controls the water cooling unit to work to cool the battery pack,
when the temperature judging part judges that the current temperature value of the battery pack is lower than the preset temperature range, the temperature control part controls the heater to work, so that the battery pack is heated.
3. The charging and conversion cabinet according to claim 2, wherein:
wherein, the heat exchange plate is arranged on the bin wall of the battery bin.
4. The charging and conversion cabinet according to claim 3, wherein:
and the outer surface of the heat exchange plate is also adhered with a heat conduction insulating strip.
5. The charging and conversion cabinet according to claim 1, wherein:
wherein, when the chargeable multiplying power judging part judges that the chargeable multiplying power is smaller than the preset chargeable multiplying power, the switch control part controls the switch group to work so as to connect the output end of the corresponding DC/DC converter with the charging interface,
the converter control unit controls the corresponding AC/DC converter and the DC/DC converter to operate, thereby charging the battery pack at a slow speed.
6. The charging and conversion cabinet according to claim 1, wherein:
wherein the preset chargeable multiplying power is 1-3C.
7. The charging and conversion cabinet according to claim 1, wherein:
wherein the preset SOC range is 5-95%.
8. The charging and conversion cabinet according to claim 1, wherein:
wherein the preset temperature range is 15-35 ℃.
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| CN202111623762.3A CN114268156B (en) | 2021-12-28 | 2021-12-28 | Charging and changing cabinet |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015012641A (en) * | 2013-06-27 | 2015-01-19 | 三菱自動車工業株式会社 | Charge controller |
| CN109286233A (en) * | 2018-12-10 | 2019-01-29 | 上海锦督智能科技有限公司 | Charging unit and charging system |
| CN111864778A (en) * | 2020-07-14 | 2020-10-30 | 易事特集团股份有限公司 | Charging and battery replacing control system and charging and battery replacing cabinet |
| US20210078431A1 (en) * | 2018-05-31 | 2021-03-18 | Honda Motor Co.,Ltd. | Charge control device, transportation device, and computer readable storage medium |
| CN214798999U (en) * | 2021-06-02 | 2021-11-19 | 上海钧正网络科技有限公司 | Energy storage based charging and battery replacing system and charging and battery replacing cabinet |
-
2021
- 2021-12-28 CN CN202111623762.3A patent/CN114268156B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015012641A (en) * | 2013-06-27 | 2015-01-19 | 三菱自動車工業株式会社 | Charge controller |
| US20210078431A1 (en) * | 2018-05-31 | 2021-03-18 | Honda Motor Co.,Ltd. | Charge control device, transportation device, and computer readable storage medium |
| CN109286233A (en) * | 2018-12-10 | 2019-01-29 | 上海锦督智能科技有限公司 | Charging unit and charging system |
| CN111864778A (en) * | 2020-07-14 | 2020-10-30 | 易事特集团股份有限公司 | Charging and battery replacing control system and charging and battery replacing cabinet |
| CN214798999U (en) * | 2021-06-02 | 2021-11-19 | 上海钧正网络科技有限公司 | Energy storage based charging and battery replacing system and charging and battery replacing cabinet |
Non-Patent Citations (1)
| Title |
|---|
| 袁瑞铭;钟侃;李顺昕;孟学东;杨晓波;孙贝贝;: "交直流一体电动汽车充电站模拟试验平台设计", 电测与仪表, no. 11, 25 November 2013 (2013-11-25) * |
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Effective date of registration: 20240429 Address after: No. 58, Yihu West Road, High tech Industrial Development Zone, Lujiang County, Hefei City, Anhui Province, 231501 Patentee after: Anhui Yizeng Power New Energy Technology Co.,Ltd. Country or region after: China Address before: 215133 room 801-3, 8th floor, HD media building, No. 28, nantiancheng Road, high speed railway new town, Xiangcheng District, Suzhou, Jiangsu Province Patentee before: Suzhou Yichu Energy Technology Co.,Ltd. Country or region before: China Patentee before: Shanghai binei Information Technology Co.,Ltd. |