CN111002861A - Voltage conversion method, device and equipment - Google Patents
Voltage conversion method, device and equipment Download PDFInfo
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- CN111002861A CN111002861A CN201911295367.XA CN201911295367A CN111002861A CN 111002861 A CN111002861 A CN 111002861A CN 201911295367 A CN201911295367 A CN 201911295367A CN 111002861 A CN111002861 A CN 111002861A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
- 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
- Y02T90/12—Electric charging stations
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- Transportation (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a voltage conversion method, a voltage conversion device and voltage conversion equipment. Wherein, the method comprises the following steps: acquiring the current state of charge of the storage battery; executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current; executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current; wherein the first predetermined state of charge is less than the second predetermined state of charge. The invention solves the technical problem that the electric vehicle cannot be started normally due to the fact that the storage battery has a feed phenomenon in the prior art.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a voltage conversion method, a voltage conversion device and voltage conversion equipment.
Background
The lead-acid storage battery has the advantages of mature technology, low cost, large battery capacity, good following load output characteristic, no memory effect and the like, so that the lead-acid storage battery is used on a pure electric bus, but because the charging method is unreasonable and the accurate after-sales maintenance is lacked, the feed phenomenon is easy to occur, and the starting of the bus is seriously influenced.
In the prior art, the vehicles with feed are mainly parked at a station, and emergency treatment has two modes, namely: the vehicle is started by external connection of a storage battery or an electric tool battery for emergency power supply; the second method comprises the following steps: the vehicle is provided with 24V power supply by using commercial power (alternating current 220V) and a switching power supply to start the vehicle in an emergency.
The two modes need to lap the power wires, but no special lap joint position is designed, the wires are directly pressed on the pile head by hands, poor contact can be caused due to the fact that the pile head is provided with the protective cover and coated with engine oil, electric sparks can occur due to large starting instant current, and the method is extremely unsafe. In addition, some vehicles are also anchored on half the way, and the problem cannot be solved if the computer is used up for diagnosis for too long time.
In view of the above-mentioned problem that the electric vehicle cannot be started normally due to the power feeding phenomenon of the storage battery in the related art, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a voltage conversion method, a voltage conversion device and voltage conversion equipment, which are used for at least solving the technical problem that the electric vehicle cannot be normally started due to the fact that a storage battery has a feeding phenomenon in the related art.
According to an aspect of an embodiment of the present invention, there is provided a voltage conversion method including: acquiring the current state of charge of the storage battery; executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current; executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current; wherein the first predetermined state of charge is less than the second predetermined state of charge.
Optionally, obtaining the current state of charge of the battery comprises: collecting battery parameters of the storage battery according to a preset time period; and determining the current state of charge according to the battery parameters.
Optionally, determining the current state of charge according to the battery parameter comprises: acquiring the battery parameters within a preset time threshold; and carrying out weighted average calculation on the battery parameters to obtain the current state of charge.
Optionally, in the case that the current state of charge is smaller than a first preset state of charge, then performing a first conversion operation includes: generating a first indication signal according to the current state of charge; triggering a first conversion signal according to the first indication signal, wherein the first conversion signal is used for controlling the alternating current to be converted into the direct current.
Optionally, in a case that the current state of charge is smaller than a first preset state of charge, performing a first conversion operation, further comprising: detecting whether the DC/DC converter is in a working state; charging the battery while the DC/DC converter is in operation.
Optionally, charging the storage battery with the DC/DC converter in operation comprises: detecting whether a target voltage during charging reaches a predetermined voltage threshold; generating a second indication signal when the target voltage reaches the predetermined voltage threshold; triggering a first disconnection signal according to the second indication signal, wherein the first disconnection signal is used for disconnecting the input alternating current.
Optionally, in the case that the current state of charge is greater than a second preset state of charge, performing a second conversion operation includes: generating a third indication signal according to the current state of charge; and triggering a second conversion signal according to the third indication signal, wherein the second conversion signal is used for controlling the conversion of the input direct current into the alternating current.
Optionally, in a case that the current state of charge is greater than a second preset state of charge, after performing a second conversion operation, the method further includes: generating a fourth indication signal under the condition that the current charge state is less than or equal to a second preset charge state; triggering a second disconnection signal according to the fourth indication signal, wherein the second disconnection signal is used for disconnecting the output of the alternating current.
According to another aspect of the embodiments of the present invention, there is also provided a voltage conversion apparatus including: the acquisition module is used for acquiring the current charge state of the storage battery; the first execution module is used for executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current; and the second execution module is used for executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus, including: a memory and a processor, the memory storing a computer program; the processor is configured to execute a computer program stored in the memory, and when the computer program runs, the processor is configured to execute the voltage conversion method according to any one of the above.
In the embodiment of the invention, the current charge state of the storage battery is acquired; executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current; executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current; the first preset state of charge is smaller than the second preset state of charge, the aim of accurately converting different voltages is fulfilled by judging the relation between the current state of charge and the preset state of charge of the storage battery and executing corresponding conversion operation according to a judgment result, so that the technical effects of effectively solving the problem that an electric vehicle cannot be normally started and improving the safety are achieved, and the technical problem that the electric vehicle cannot be normally started due to the fact that the storage battery has a feed phenomenon in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a voltage conversion method according to an embodiment of the invention;
fig. 2 is a flow diagram of a mains-connected emergency vehicle according to an alternative embodiment of the invention;
FIG. 3 is a flow chart of an alternate embodiment of the AC 220V power supply output according to the present invention;
fig. 4 is a schematic diagram of a voltage conversion device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a voltage conversion method, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a flowchart of a voltage conversion method according to an embodiment of the present invention, as shown in fig. 1, the voltage conversion method includes the steps of:
step S102, acquiring the current state of charge of the storage battery;
the above-mentioned current State Of Charge (SOC) is a ratio Of a remaining capacity Of the battery after being used for a certain period Of time or left unused for a long period Of time to a capacity thereof in a fully charged State, and is usually expressed in percentage. The value range of SOC is [0,1], where SOC is 0 indicating that the battery is completely discharged, and SOC is 1 indicating that the battery is completely charged. In a specific implementation process, the value of the current state of charge may be any value in the value range [0,1 ].
Step S104, executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current;
the first preset state of charge may be a default value or a preset value, and a value of the first preset state of charge is close to 0, for example: 1%, 5%, 10%, etc., which can be set according to the application scene in specific implementation.
Step S106, executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current;
as an alternative embodiment, the value of the second predetermined state of charge includes, but is not limited to, 80%.
Wherein the first predetermined state of charge is less than the second predetermined state of charge.
Since the state of charge can be expressed by percentage, in the above embodiment, the first preset state of charge is smaller than the second preset state of charge, the current state of charge of the battery can be compared with the first preset state of charge and the second preset state of charge respectively, and different conversion operations can be executed according to the comparison result.
The direct current and the alternating current have different voltages, and for example, the direct current may be 12V direct current, 24V direct current, 28V direct current, or the like, and the alternating current may be 220V alternating current, or the like.
For example, after the mains supply is connected, the input 220V ac power can be converted into 24V dc power through a first conversion operation. Therefore, after the commercial power is directly connected, the vehicle can be started in an emergency, the operation is simple and convenient, the reliability and the safety are realized, and the maintenance cost can be reduced. Similarly, the output of 220V alternating current can be realized, the input direct current can be converted into 220V alternating current through the second conversion operation, at the moment, the input direct current is provided for the storage battery, the notebook computer can be supplied with power under the emergency condition, the service time of the computer is prolonged, and meanwhile, the power can be supplied to low-power alternating current loads.
Through the steps, the current state of charge of the storage battery can be acquired; executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current; executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current; the method has the advantages that the first preset state of charge is smaller than the second preset state of charge, the aim of accurately converting different voltages is fulfilled by judging the relation between the current state of charge and the preset state of charge of the storage battery and executing corresponding conversion operation according to the judgment result, so that the technical effects of effectively solving the problem that the electric vehicle cannot be normally started due to the fact that the storage battery has a feed phenomenon and improving safety are achieved, and the technical problem that the electric vehicle cannot be normally started due to the fact that the storage battery has the feed phenomenon in the related technology is solved.
Optionally, obtaining the current state of charge of the battery comprises: collecting battery parameters of a storage battery according to a preset time period; and determining the current state of charge according to the battery parameters.
The predetermined time period may be set according to application requirements, and the collection of battery parameters of the storage battery at a predetermined time interval may be implemented, where the battery parameters include but are not limited to: current, voltage.
By the mode, the battery parameters of the storage battery can be collected and updated in time, so that the acquired collected data are more accurate and reliable.
As an alternative embodiment, the determination of the current state of charge according to the battery parameter may be performed by at least one of: internal resistance method, linear model method, Kalman filtering method. In the specific implementation process, one of the methods may be adopted, and a plurality of combinations may be adopted, which is not limited herein.
Optionally, determining the current state of charge from the battery parameter comprises: acquiring battery parameters within a preset time threshold; and carrying out weighted average calculation on the battery parameters to obtain the current state of charge.
The predetermined time threshold includes a first predetermined time threshold and a second predetermined time threshold, wherein the first predetermined time threshold is less than or equal to the second predetermined time threshold. By the method, the battery parameters in a period of time can be obtained, and weighted average calculation is carried out on the battery parameters in the period of time, so that the current state of charge is obtained.
It should be noted that the current state of charge obtained in the above manner is more accurate.
Optionally, in the case that the current state of charge is smaller than the first preset state of charge, then performing the first conversion operation includes: generating a first indication signal according to the current state of charge; and triggering a first conversion signal according to the first indication signal, wherein the first conversion signal is used for controlling the conversion of the alternating current into the direct current.
The first indicator signal may be displayed by a predetermined indicator light, for example, a red indicator light. In addition, the first transition signal may be triggered in a variety of ways, such as pressing a start button, voice recognition, and the like.
As an alternative embodiment, when the current state of charge of the battery is low, the red indicator light is turned on, and the start button can be pressed to output direct current. In the description, the present invention is not limited to the embodiment.
Optionally, in a case that the current state of charge is smaller than a first preset state of charge, performing a first conversion operation, further comprising: detecting whether the DC/DC converter is in a working state; the battery is charged while the DC/DC converter is in operation.
After the first conversion operation is performed, the direct current is output, and the DC/DC converter is in an operating state at the moment, so that the storage battery can be charged. Optionally, the output dc power is 24V dc power.
Optionally, charging the storage battery with the DC/DC converter in operation comprises: detecting whether a target voltage during charging reaches a predetermined voltage threshold; generating a second indication signal when the target voltage reaches a predetermined voltage threshold; and triggering a first disconnection signal according to the second indication signal, wherein the first disconnection signal is used for disconnecting the input alternating current.
In the implementation process, the setting of the predetermined voltage threshold is flexible and can be set according to application scenarios, wherein the setting of the predetermined voltage threshold can take the following factors into consideration, such as the capacity of the storage battery, the charging speed, the ambient temperature, and the like. Optionally, the predetermined voltage threshold is 28V.
The second indication signal may be displayed by a predetermined indicator light, for example, a green indicator light. In addition, the first off signal may be triggered in a variety of ways, such as pressing a start button, voice recognition, and the like.
As an alternative embodiment, when the current state of charge of the battery reaches a certain requirement, the green indicator light is turned on, and the start button can be pressed to turn off the input alternating current. In the description, the present invention is not limited to the embodiment.
Optionally, in the case that the current state of charge is greater than the second preset state of charge, then performing the second conversion operation includes: generating a third indication signal according to the current state of charge; and triggering a second conversion signal according to the third indication signal, wherein the second conversion signal is used for controlling the conversion of the input direct current into the alternating current.
The third indicator signal may be displayed by a predetermined indicator light, for example, a green indicator light. In addition, the second switching signal may be triggered in a variety of ways, such as pressing a start button, voice recognition, etc.
As an alternative embodiment, when the current state of charge of the battery is relatively high, the green indicator light is turned on, and the start button can be pressed to output alternating current. In the description, the present invention is not limited to the embodiment.
Optionally, in a case that the current state of charge is greater than the second preset state of charge, after the second conversion operation is executed, the method further includes: generating a fourth indication signal under the condition that the current charge state is less than or equal to a second preset charge state; and triggering a second disconnection signal according to the fourth indication signal, wherein the second disconnection signal is used for disconnecting the output alternating current.
The fourth indicator signal may be displayed by a predetermined indicator light, for example, a red indicator light. In addition, the second off signal may be triggered in a variety of ways, such as pressing a start button, voice recognition, and the like.
As an alternative embodiment, when the current state of charge of the battery reaches a certain requirement, the red indicator light is turned on, and the start button can be pressed to disconnect the output alternating current. In the description, the present invention is not limited to the embodiment.
A voltage conversion method according to an alternative embodiment of the present invention will be described below.
Fig. 2 is a flow chart of the commercial power access to the emergency vehicle according to the alternative embodiment of the present invention, as shown in fig. 2, the commercial power is connected to the junction box through the patch cord, and the power detection module is awakened. The capacity of the storage battery is detected firstly, the storage battery is determined to be in a feeding state, if the electric quantity of the storage battery is larger than a set value, the green light of the indicator light is on, if the electric quantity of the storage battery is lower than the set value, the red light is on, the power supply module can detect undervoltage, electric leakage and the like of the accessed commercial power, the starting button is pressed, the switching circuit can output a direct-current 24V power supply, the vehicle is electrified instantly, high-voltage electrification is successful, and the three-in-one DC/DC converter can charge the storage battery. When the power supply module detects that the charging voltage is 28V, the indicator light turns green, and the alternating current input can be disconnected only by turning off the starting button.
Fig. 3 is a flow chart of the 220V ac power output according to the alternative embodiment of the present invention, as shown in fig. 3, when the 220V ac power output is required to be provided by the junction box, the power indicator on the junction box is observed first, the indicator indicating that the SOC of the battery is greater than 80% is green, and when the start button is pressed, the ac power can be output. When the capacity of the storage battery is lower than a set value, the indicator light turns red, and the output of the alternating current can be cut off when the starting button needs to be turned off.
The power management module uses a special power chip and adopts a time interval method to collect the voltage of the storage battery, namely 2 seconds is an interval, the voltage can be accurately collected, and after the voltage is collected, an instruction is sent again to charge the DC/DC converter. The SOC of the storage battery can be calculated by adopting an internal resistance method, and the SOC value of a certain time period can be obtained by weighted averaging, and the value is relatively accurate.
It should be noted that: in the above method, the following is mainly involved:
1. and a power supply chip is adopted to acquire the relevant information of the storage battery, and the SOC of the storage battery is calculated by an advanced algorithm.
2. And a special singlechip is adopted to process data and send the data to the whole vehicle in a message form.
3. The output voltage of the switching power supply can be adjusted to charge the storage battery in an emergency.
4. The junction box can output a direct current 12V power supply.
5. After the starting vehicle detects that the DC/DC converter works, the commercial power can be disconnected.
6. When the capacity of the storage battery is detected to be lower than a set value, the alternating current output can be cut off.
The junction box is a central mechanism of a vehicle power supply, integrates a switching power supply (alternating current 220V is converted into direct current 24V) and an inverter circuit (direct current 24V is converted into alternating current 220V) into the junction box, can be switched into a mains supply directly to start the vehicle in an emergency, and can provide power for a notebook computer by the output of the alternating current power supply, so that maintenance and diagnosis are easier and safer.
The central junction box integrates the inverter circuit and the switching power supply circuit, the commercial power can be directly connected into the junction box, the vehicle can be started in an emergency, the operation is simple and convenient, the reliability and the safety are realized, and the maintenance cost can be reduced. The junction box can output an alternating-current 220V power supply, can supply power to the notebook computer in an emergency situation, prolongs the service time of the computer, and can also provide power supply for low-power alternating-current loads, thereby improving the after-sale efficiency and embodying humanized design.
In addition, in order to meet the requirement of vehicle load on power supply diversity, the junction box can also provide a direct-current 12V power supply for the whole vehicle. The direct-current output voltage of the switching power supply can be adjusted to directly charge the storage battery. Therefore, the function of the junction box is improved to a new height, and the requirement of technical development of the pure electric bus is met.
Example 2
According to another aspect of the embodiments of the present invention, there is also provided an embodiment of an apparatus for performing the voltage converting method in embodiment 1 above, and fig. 4 is a schematic diagram of a voltage converting apparatus according to an embodiment of the present invention, as shown in fig. 4, the voltage converting apparatus includes: an acquisition module 40, a first execution module 42, and a second execution module 44. The voltage conversion device will be described in detail below.
The acquisition module 40 is used for acquiring the current state of charge of the storage battery;
a first executing module 42, connected to the obtaining module 40, configured to execute a first converting operation when the current state of charge is smaller than a first preset state of charge, where the first converting operation is used to convert input ac power into dc power;
and a second executing module 44, connected to the obtaining module 40, for executing a second converting operation when the current state of charge is greater than a second preset state of charge, where the second converting operation is used to convert the input direct current into alternating current.
It should be noted that the acquiring module 40, the first executing module 42 and the second executing module 44 correspond to steps S102 to S106 in embodiment 1, and the modules are the same as the corresponding steps in the implementation example and application scenarios, but are not limited to the disclosure in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
Optionally, the obtaining module includes: the acquisition unit is used for acquiring battery parameters of the storage battery according to a preset time period; and the determining unit is used for determining the current state of charge according to the battery parameters.
Optionally, the determining unit includes: the acquisition subunit is used for acquiring the battery parameters within a preset time threshold; and the calculating subunit is used for performing weighted average calculation on the battery parameters to obtain the current state of charge.
Optionally, the first executing module includes: the first generating unit is used for generating a first indicating signal according to the current state of charge; the first trigger unit is used for triggering a first conversion signal according to the first indication signal, wherein the first conversion signal is used for controlling the conversion of the alternating current into the direct current.
Optionally, the first execution module further includes: a first detection unit for detecting whether the DC/DC converter is in an operating state; and the charging unit is used for charging the storage battery under the condition that the DC/DC converter is in operation.
Optionally, the charging unit includes: a detection subunit, configured to detect whether a target voltage during charging reaches a predetermined voltage threshold; a generation subunit, configured to generate a second indication signal when the target voltage reaches a predetermined voltage threshold; and triggering a first disconnection signal according to the second indication signal, wherein the first disconnection signal is used for disconnecting the input alternating current.
Optionally, the second executing module includes: the second generating unit is used for generating a third indicating signal according to the current state of charge; and the second trigger unit is used for triggering a second conversion signal according to the third indication signal, wherein the second conversion signal is used for controlling the input direct current to be converted into alternating current.
Optionally, in a case that the current state of charge is greater than the second preset state of charge, after the second converting operation is performed, the apparatus further includes: the third generating unit is used for generating a fourth indicating signal under the condition that the current charge state is less than or equal to a second preset charge state; and the third triggering unit is used for triggering a second disconnection signal according to the fourth indication signal, wherein the second disconnection signal is used for disconnecting the output alternating current.
Example 3
According to another aspect of the embodiments of the present invention, there is also provided an apparatus, including: a memory and a processor, the memory storing a computer program; a processor for executing a computer program stored in the memory, the computer program when executed causing the processor to perform any of the voltage conversion methods described above.
It should be noted that the above-mentioned device may be a computer device.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of voltage conversion, comprising:
acquiring the current state of charge of the storage battery;
executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current;
executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current;
wherein the first predetermined state of charge is less than the second predetermined state of charge.
2. The method of claim 1, wherein obtaining the current state of charge of the battery comprises:
collecting battery parameters of the storage battery according to a preset time period;
and determining the current state of charge according to the battery parameters.
3. The method of claim 2, wherein determining the current state of charge from the battery parameter comprises:
acquiring the battery parameters within a preset time threshold;
and carrying out weighted average calculation on the battery parameters to obtain the current state of charge.
4. The method of claim 1, wherein in the case that the current state of charge is less than a first preset state of charge, then performing a first conversion operation comprises:
generating a first indication signal according to the current state of charge;
triggering a first conversion signal according to the first indication signal, wherein the first conversion signal is used for controlling the alternating current to be converted into the direct current.
5. The method of claim 1, wherein if the current state of charge is less than a first predetermined state of charge, then performing a first conversion operation, further comprising:
detecting whether the DC/DC converter is in a working state;
charging the battery while the DC/DC converter is in operation.
6. The method of claim 5, wherein charging the battery with the DC/DC converter in operation comprises:
detecting whether a target voltage during charging reaches a predetermined voltage threshold;
generating a second indication signal when the target voltage reaches the predetermined voltage threshold;
triggering a first disconnection signal according to the second indication signal, wherein the first disconnection signal is used for disconnecting the input alternating current.
7. The method of claim 1, wherein in the event that the current state of charge is greater than a second predetermined state of charge, then performing a second transition operation comprises:
generating a third indication signal according to the current state of charge;
and triggering a second conversion signal according to the third indication signal, wherein the second conversion signal is used for controlling the conversion of the input direct current into the alternating current.
8. The method of claim 7, wherein after performing the second transition operation if the current state of charge is greater than the second predetermined state of charge, the method further comprises:
generating a fourth indication signal under the condition that the current charge state is less than or equal to a second preset charge state;
triggering a second disconnection signal according to the fourth indication signal, wherein the second disconnection signal is used for disconnecting the output of the alternating current.
9. A voltage conversion apparatus, comprising:
the acquisition module is used for acquiring the current charge state of the storage battery;
the first execution module is used for executing a first conversion operation under the condition that the current state of charge is smaller than a first preset state of charge, wherein the first conversion operation is used for converting input alternating current into direct current;
and the second execution module is used for executing a second conversion operation under the condition that the current state of charge is larger than a second preset state of charge, wherein the second conversion operation is used for converting the input direct current into alternating current.
10. An apparatus, comprising: a memory and a processor, wherein the processor is capable of,
the memory stores a computer program;
the processor configured to execute a computer program stored in the memory, the computer program when executed causing the processor to perform the voltage conversion method of any one of claims 1 to 8.
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