CN116418081A - Control method of power supply circuit, power supply circuit and electronic equipment - Google Patents
Control method of power supply circuit, power supply circuit and electronic equipment Download PDFInfo
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- CN116418081A CN116418081A CN202310340040.XA CN202310340040A CN116418081A CN 116418081 A CN116418081 A CN 116418081A CN 202310340040 A CN202310340040 A CN 202310340040A CN 116418081 A CN116418081 A CN 116418081A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004146 energy storage Methods 0.000 claims abstract description 134
- 238000006243 chemical reaction Methods 0.000 claims description 36
- 238000007599 discharging Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 description 7
- 238000012937 correction Methods 0.000 description 5
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- 238000012545 processing Methods 0.000 description 3
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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Abstract
The application belongs to the technical field of energy storage, and provides a control method of a power supply circuit, the power supply circuit and electronic equipment. Wherein, the power supply circuit includes: the control method comprises the steps of detecting the battery voltage of the energy storage device, judging the electric quantity state of the energy storage device, and controlling the output current of the first boost circuit to be reduced to a first preset current when the battery voltage is smaller than a first preset voltage, and controlling the output current of the second boost circuit to be increased to a second preset current so as to charge the energy storage device. The second boost circuit can be timely controlled to charge the energy storage device when the electric quantity of the energy storage device is low, so that the energy storage device can be rapidly charged when the energy storage device is in a power shortage mode, and the problem that the user cannot meet the use requirement when the user needs to use the energy storage device is avoided.
Description
Technical Field
The application belongs to the technical field of energy storage, and particularly relates to a control method of a power supply circuit, the power supply circuit and electronic equipment.
Background
In the related art, direct current output by solar energy can be supplied to a load through a bidirectional inverter circuit after being boosted, and can also be charged into energy storage equipment after being boosted. Of course, when the solar energy is not output, the bidirectional inverter circuit can be connected with the mains supply, so that the energy storage device can be charged by the mains supply, or when the solar energy output is insufficient to meet the electricity demand of the load, the energy storage device can be used as a supplement to supply power to the load. But when solar panel is in the low light state always, can lead to utilizing energy storage equipment to carry out the supplementary power supply for a long time, and then lead to energy storage equipment's reserve electric quantity lower unable demand of meeting the reserve electricity to seriously influence user's user demand and experience.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the application provides a control method of a power supply circuit, the power supply circuit and electronic equipment, which can solve the problem that the energy storage equipment is in a power shortage mode for a long time, so that a user cannot meet the use requirements when the energy storage equipment needs to be used.
A first aspect of an embodiment of the present application provides a control method of a power supply circuit, where the power supply circuit includes: a first booster circuit and a second booster circuit; the input end of the first booster circuit and the input end of the second booster circuit are both used for being connected with a direct current power supply, the output end of the first booster circuit is used for being connected with a direct current bus so as to supply power to a later-stage circuit through the direct current bus, and the output end of the second booster circuit is used for being connected with energy storage equipment; the control method comprises the following steps:
acquiring the battery voltage of the energy storage device;
when the battery voltage is smaller than a first preset voltage, a first driving signal is output to the first boost circuit so as to reduce the output current of the first boost circuit to a first preset current, and a second driving signal is output to the second boost circuit so as to control the output current of the second boost circuit to rise to a second preset current, so that the energy storage device is charged; the first preset current is the minimum current meeting the working requirement of the later-stage circuit.
In one embodiment, the control method further comprises:
stopping outputting the second driving signal to the second boost circuit when the battery voltage is greater than or equal to a second preset voltage so as to control the second boost circuit to stop charging the energy storage device; the second preset voltage is greater than the first preset voltage and less than the full-power voltage of the energy storage device.
In one embodiment, the control method further comprises:
when the battery voltage is greater than or equal to the second preset voltage, outputting a power supply driving signal to the first boost circuit so as to control the output current of the first boost circuit to rise to a third preset current; wherein the third preset current is greater than the first preset current.
In one embodiment, the control method further comprises:
acquiring the state of the second boost circuit when the battery voltage is greater than the first preset voltage and less than the second preset voltage;
and when the second booster circuit is in an operating state, the first driving signal and the second driving signal are kept to be output.
In one embodiment, the control method further comprises:
acquiring the state of the second boost circuit when the battery voltage is greater than the first preset voltage and less than the second preset voltage;
and when the second boost circuit is not in a working state, generating the power supply driving signal.
In one embodiment, the energy storage device is further connected to the dc bus; the control method further includes:
the required power of a later-stage circuit connected to the direct current bus is obtained;
acquiring the power supply power of the direct current power supply;
and when the power supply power is smaller than the required power, controlling the energy storage equipment to be in a discharging mode so as to supply power to the rear-stage circuit.
In one embodiment, the control method further comprises: and when the power supply power is greater than the required power and the battery voltage of the energy storage device is less than the full-charge voltage, controlling the energy storage device to be in a charging mode so as to charge by utilizing the electric energy output by the first boost circuit.
A second aspect of embodiments of the present application provides a power supply circuit, including: the first boost circuit, the second boost circuit and the main control circuit; the input end of the first boost circuit and the input end of the second boost circuit are both used for being connected with a direct current power supply, the output end of the first boost circuit is used for being connected with a direct current bus so as to supply power to a later-stage circuit through the direct current bus, the output end of the second boost circuit is used for being connected with energy storage equipment, the main control circuit is respectively connected with the first boost circuit and the second boost circuit, and the main control circuit is used for executing the control method according to any one of the above.
In one embodiment, the power supply circuit further comprises an AC/DC conversion circuit; the AC/DC conversion circuit includes:
the first end of the DC/DC conversion unit is connected with the first boost circuit through the direct current bus and is used for carrying out direct current-direct current conversion on the direct current output by the first boost circuit and then outputting the direct current;
and the AC/DC conversion unit is connected with the second end of the DC/DC conversion unit and is used for carrying out AC/DC conversion on the direct current output by the DC/DC conversion unit and then outputting the direct current.
A third aspect of embodiments of the present application provides an electronic device comprising a memory and a processor, the electronic device being configured to perform the steps of the control method as set forth in any one of the above, or
The electronic device comprising a power supply circuit as claimed in any one of the preceding claims.
The embodiment of the application provides a control method of a power supply circuit, which comprises the steps of detecting the battery voltage of energy storage equipment, judging the electric quantity state of the energy storage equipment, and controlling the output current of a first boost circuit to be reduced to a first preset current when the battery voltage is smaller than a first preset voltage, and controlling the output current of a second boost circuit to be increased to a second preset current so as to charge the energy storage equipment. The first preset current is the minimum current meeting the working requirement of the rear-stage circuit, so that the second preset current is the maximum current which can be supplied to the energy storage device in the current state, the second boost circuit can be controlled to charge the energy storage device by the maximum charging current in time when the minimum power supply requirement of the load is met when the electric quantity of the energy storage device is low, the energy storage device can be rapidly charged when the energy storage device is in the power shortage mode, and the problem that the user cannot meet the use requirement when the energy storage device needs to be used is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a control method of a power supply circuit according to an embodiment of the present application;
FIG. 3 is a flowchart of a control method of a power supply circuit according to another embodiment of the present application;
fig. 4 is a flowchart of a control method of a power supply circuit according to still another embodiment of the present application;
fig. 5 is a flowchart of a control method of a power supply circuit according to still another embodiment of the present application;
fig. 6 is a schematic structural diagram of a power supply circuit according to another embodiment of the present application;
fig. 7 is a schematic structural diagram of a power supply circuit according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of a power supply circuit according to another embodiment of the present application.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is one or more than one unless specifically defined otherwise.
In the related art, the direct current output by solar energy is boosted and then supplied to a load through a bidirectional inverter circuit, or the direct current output by solar energy is boosted and then supplied to a power grid through the bidirectional inverter circuit, and the direct current output by solar energy can also be boosted and then supplied to energy storage equipment for charging. Of course, when the solar energy is not output, the bidirectional inverter circuit can be connected with the mains supply, so that the energy storage device is charged by the mains supply, or when the solar energy output is insufficient to meet the electricity demand of the load, the energy storage device can be used as a supplement to supply power to the load. But when the bidirectional inverter circuit is connected with a load and a solar panel, and the solar panel is always in a low-light state, the bidirectional inverter circuit can be caused to supplement power for the connected load by using the energy storage device for a long time, and then the reserve electric quantity of the energy storage device is lower after the solar panel is in low light for a long time, so that the requirement of standby electricity cannot be met, and the use requirement and experience of a user are seriously influenced.
In order to solve the problem that the reserve power of the energy storage device is low and cannot meet the standby power demand, the embodiment of the application provides a control method of a power supply circuit, and referring to fig. 1, the power supply circuit includes: a first booster circuit 10 and a second booster circuit 20. The input end of the first boost circuit 10 and the input end of the second boost circuit 20 are both used for being connected with the dc power supply 100, the output end of the first boost circuit 10 is used for being connected with a dc bus to supply power to the post-stage circuit 40 through the dc bus, and the output end of the second boost circuit 20 is used for being connected with the energy storage device 30. The post-stage circuit 40 refers to all circuits connected to the output terminal of the first boost circuit 10, and may be a power consumption part inside the device, or may be a load or a power grid to which the device is connected.
Referring to fig. 2, the control method includes: step S10 to step S20.
The step S10 includes: the battery voltage of the energy storage device 30 is obtained.
Specifically, in this embodiment, the battery voltage of the energy storage device 30 may be obtained in real time, or the battery voltage of the energy storage device 30 may be obtained according to a certain frequency. For example, the battery voltage of the energy storage device 30 may be periodically acquired at a certain time frequency.
In this embodiment, by acquiring the battery voltage of the energy storage device 30 in real time or periodically, the battery voltage and the battery power have a corresponding mapping relationship, so that the real-time monitoring of the battery power is realized, and the corresponding operation can be performed according to the battery power. The working state of the first boost circuit 10 and/or the second boost circuit 20 can be timely adjusted according to the battery voltage by acquiring the battery voltage of the energy storage device 30 in real time, so that the first boost circuit and/or the second boost circuit can work more accurately, the performance of a power supply circuit can be improved, and the user experience is improved.
Step S20 includes: when the battery voltage is smaller than the first preset voltage, outputting a first driving signal to the first boost circuit 10 to reduce the output current of the first boost circuit 10 to a first preset current, and outputting a second driving signal to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to a second preset current, so as to charge the energy storage device 30; the first preset current is the minimum current meeting the working requirement of the later-stage circuit.
In this embodiment, when the battery voltage is smaller than the first preset voltage, it is indicated that the battery voltage is smaller, and if the user needs to use the energy storage device 30 as the standby power at this time, the user's requirement cannot be met easily due to insufficient electric quantity, and the battery of the energy storage device 30 needs to be charged at this time to maintain the electric quantity of the energy storage device 30 above a certain electric quantity.
For example, the first preset voltage is a battery voltage corresponding to 80% of the full capacity of the energy storage device 30. That is, when the battery voltage is detected to be lower than the first preset voltage, a first driving signal is outputted to control the output current of the first boost circuit 10 to gradually decrease to the first preset current, and a second driving signal is outputted to control the output current of the second boost circuit 20 to rise to the second preset current, thereby charging the energy storage device 30.
In this embodiment, since the input terminal of the first boost circuit 10 and the input terminal of the second boost circuit 20 are both used to connect to the dc power supply 100, when the battery voltage is detected to be smaller than the first preset voltage, the output current of the second boost circuit 20 is gradually reduced to the first preset current by controlling the output current of the first boost circuit 10 to rise to the second preset current, so as to charge the energy storage device 30. The first preset current is the minimum current meeting the working requirement of the rear-stage circuit 40, so that the second preset current is the maximum current that can be provided to the energy storage device 30 in the current state, and thus the second boost circuit can be controlled in time to charge the energy storage device with the maximum charging current while meeting the minimum power supply requirement of the load when the electric quantity of the energy storage device 30 is low. In this way, the energy storage device 30 can be charged rapidly during power shortage, so that the problem that the energy storage device 30 is in the power shortage mode for a long time and cannot meet the use requirement when a user needs to use the energy storage device is avoided.
In one embodiment, when the post-stage circuit 40 is a power grid, the ratio of the first preset current to the supply current provided by the dc power supply 100 may be close to 0, so as to stop feeding the power grid, and the ratio of the second preset current to the supply current provided by the dc power supply 100 may be close to 1, where the second preset current is greater than the first preset current. That is, in the range allowed by the circuit, the second preset current is as large as possible, so that the energy storage device 30 can be charged rapidly when charging is needed, the problem that the voltage of the energy storage device 30 is too low when a user needs to use the energy storage device 30 is avoided, and the user experience is improved.
In one embodiment, when the post-stage circuit 40 is a load, when the battery voltage is smaller than a first preset voltage, a first driving signal is output to the first boost circuit 10 to reduce the output current of the first boost circuit 10 to a first preset current, a second driving signal is output to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to a second preset current, so as to charge the energy storage device 30, wherein the first preset current can satisfy the minimum current required by the normal operation of the post-stage circuit 40, and the second preset current is the maximum current capable of charging the energy storage device 30 without affecting the normal operation of the post-stage circuit 40.
In this embodiment, the second preset current may be greater than the first preset current, or the second preset current may be less than or equal to the first preset current. It can be understood that when the output current of the first boost circuit 10 first meets the normal requirement of the load, then outputs the first driving signal to the first boost circuit 10 to reduce the output current of the first boost circuit 10 to the first preset current, and outputs the second driving signal to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to the second preset current, so as to charge the energy storage device 30, so that the energy storage device 30 can be charged quickly under the condition of ensuring the normal supply of the load, thereby meeting the requirement of the user. It should be noted that, in the embodiment of the present application, the change of the output currents of the first boost circuit 10 and the second boost circuit 20 is performed on the premise of ensuring that the post-stage circuit 40 can work normally, and will not be described in detail.
Specifically, when the battery voltage is less than the first preset voltage, a second driving signal is output to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to a second preset current, so as to charge the energy storage device 30. For example, when the energy storage device 30 needs to be charged, the first boost circuit 10 will also first meet the normal operating requirement of the post-stage circuit 40. Then, the second driving signal may control the on-off of the switching tube in the second boost circuit 20, so that the second boost circuit 20 outputs a second preset current. The first preset current is the minimum current meeting the working requirement of the later-stage circuit, so that the second boost circuit 20 can charge the energy storage device 30 with the maximum output current on the premise of ensuring the normal working of the later-stage circuit, the energy storage device 30 can be rapidly charged, and the user requirement is met.
In one embodiment, the first preset current may be 50% of the rated current of the back-end circuit 40, or the minimum operating current.
In one embodiment, referring to fig. 3, the control method further includes: step S30.
Specifically, step S30 includes: when the battery voltage is greater than or equal to the second preset voltage, stopping outputting the second driving signal to the second boost circuit 20 to control the second boost circuit 20 to stop charging the energy storage device 30; wherein the second preset voltage is greater than the first preset voltage and less than the full voltage of the energy storage device 30.
In this embodiment, after the battery voltage of the energy storage device 30 is obtained, the battery voltage is compared with the second preset voltage. When the battery voltage is greater than or equal to the second preset voltage, it is indicated that the battery voltage is greater at this time, the energy storage device 30 can meet the needs of the user, at this time, the energy storage device 30 does not need to be charged preferentially, and then the second driving control signal is output to control the second boost circuit 20 to stop working, that is, the second boost circuit 20 stops charging the energy storage device 30, when the electric energy of the energy storage device 30 can meet the emergency or standby power needs, the normal power supply of the rear-stage circuit 40 is ensured preferentially, and the power supply of the rear-stage circuit is ensured not to be affected. That is, when the electric quantity of the energy storage device 30 is lower than the electric quantity required by standby power, the energy storage device 30 is preferably charged with a large current, so that the energy storage device 30 meets the electric quantity required by standby power, and when the battery voltage of the energy storage device 30 reaches the second preset voltage, the power supply of the load is preferably performed.
In one embodiment application, the first predetermined voltage is a battery voltage of the energy storage device 30 at 80% of full capacity.
In one embodiment application, the deviation between the second preset voltage and the first preset voltage is greater than a certain value. For example, the second preset voltage may be greater than the first preset voltage by 5V. By setting a certain return difference, the problem that the service lives of the first booster circuit 10 and the second booster circuit 20 are reduced due to the fact that the second booster circuit 20 is repeatedly turned on can be avoided.
In one embodiment, referring to fig. 3, step S30 further includes: when the battery voltage is greater than or equal to the second preset voltage, a power supply driving signal is output to the first boost circuit 10 to control the output current of the first boost circuit 10 to rise to a third preset current.
In this embodiment, when the battery voltage is greater than or equal to the second preset voltage, it is indicated that the battery voltage of the energy storage device 30 is higher at this time, the battery capacity of the corresponding energy storage device 30 is higher, and the energy storage device 30 does not need to be charged preferentially, then the output of the second driving signal is stopped, and the power supply driving signal is output, so as to control the output current of the first boost circuit 10 to rise to the third preset current.
When the battery voltage is greater than or equal to the second preset voltage, the output of the second driving signal to the second boost circuit 20 is stopped, and the power supply driving signal is output to the first boost circuit 10, so that the second boost circuit 20 is controlled to stop charging the energy storage device 30, and the output current of the first boost circuit 10 is controlled to rise to the third preset current. The third preset current is set to be larger than the first preset current so as to supply power to the back-stage circuit 40, so that the normal operation of the back-stage circuit 40 is ensured.
In one embodiment, the third preset current is the maximum output current of the first boost circuit 10 when the load demand is met.
Specifically, when the battery voltage is greater than or equal to the second preset voltage, a power supply driving signal is output to the first boost circuit 10 to control the output current of the first boost circuit 10 to rise to the third preset current. For example, the power supply driving signal may cause the first boost circuit 10 to output a third preset current by controlling on/off of a switching transistor in the first boost circuit 10. The third preset current is the maximum output current of the first boost circuit 10 when the load requirement is met, so that the first boost circuit 10 can supply power for the post-stage circuit 40 with the maximum output current, so that the post-stage circuit 40 can normally operate, and the user requirement is met.
In one embodiment, referring to fig. 4, the control method further includes: and step S40.
Specifically, step S40 includes: when the battery voltage is greater than the first preset voltage and less than the second preset voltage, the state of the second boost circuit 20 is obtained. While the second booster circuit 20 is in the operation state, the first drive signal and the second drive signal are kept being output, that is, step S52 is performed, as shown in fig. 4.
In this embodiment, after the battery voltage of the energy storage device 30 is obtained, when the battery voltage is greater than the first preset voltage and less than the second preset voltage and the second boost circuit 20 is in the working state, it is indicated that the second boost circuit 20 is charging the energy storage device 30 at this time, but the battery voltage is not yet charged to the second preset voltage, and at this time, the energy storage device 30 needs to be continuously charged, the first driving signal and the second driving signal are kept output at this time, so that the current working mode of the first boost circuit 10 and the second boost circuit 20 is kept unchanged, and thus the operation avoids the situation that the second boost circuit 20 charges the energy storage device 30 to the first preset voltage and stops charging, but the situation that the energy storage device 30 is lower than the first preset voltage is easy to occur in a short time due to normal power consumption, and then the second boost circuit 20 is turned on, thereby causing the problems of frequent starting or turning off of the second boost circuit 20 and affecting the service life.
In one embodiment, when the second boost circuit 20 is not in the operating state, the power supply driving signal is generated, that is, step S54 is performed, as shown in fig. 4.
In this embodiment, when the battery voltage of the energy storage device 30 is greater than the first preset voltage and less than the second preset voltage and the second boost circuit 20 is not in the working state, it is indicated that the second boost circuit 20 is not working at this time, and the battery voltage of the energy storage device 30 is less than the second preset voltage but not to a degree lower than the first preset voltage, so that the energy storage device 30 does not need to be charged preferentially at present, the power supply of the back-stage circuit 40 is guaranteed to be prioritized, and a power supply driving signal is generated at this time to control the on-off of the switching tube in the first boost circuit 10 so as to enable the first boost circuit 10 to output a third preset current, so that the back-stage circuit 40 operates normally, and the user requirement is met.
In this embodiment, it should be noted that, both the step S52 and the step S54 are corresponding operations performed when the battery voltage is greater than the first preset voltage and less than the second preset voltage, and the difference is that when the step S52 is performed, it is explained that the battery voltage of the energy storage device 30 is greater than the first preset voltage and less than the second preset voltage at this time because the second boost circuit 20 is charging the energy storage device 30, but the battery voltage is not yet charging the second preset voltage, and at this time, the first driving signal and the second driving signal need to be continuously output, so that the first boost circuit 10 and the second boost circuit 20 keep the current operation mode unchanged, so that the operation avoids the second boost circuit 20 from charging the energy storage device 30 to the first preset voltage, i.e. stopping charging. When step S54 is executed, it is indicated that the second boost circuit 20 is not operated at this time, and the battery voltage of the energy storage device 30 is less than the second preset voltage but not yet lower than the first preset voltage, so that no priority charging is currently required, and the power supply of the subsequent stage circuit is guaranteed to be priority, and at this time, a power supply driving signal is generated to control the switching tube in the first boost circuit 10 to be turned on or off so that the first boost circuit 10 outputs the third preset current. Thus, the problem that the service life of the first booster circuit 10 and the second booster circuit is reduced due to frequent switching of the working modes is avoided.
In one embodiment, the energy storage device 30 is further connected to a dc bus, and referring to fig. 5, the control method further includes: step S60.
Specifically, step S60 includes: the required power of the rear stage circuit 40 connected to the dc bus is obtained, and the power supply of the dc power supply 100 is obtained.
Specifically, the required power of the post-stage circuit 40 is acquired while the power supply of the dc power supply 100 is acquired, the power supply and the required power are compared, and then steps S61 and S62 are performed according to the magnitudes of the power supply and the required power.
Step S61 includes: when the supply power is less than the demand power, the energy storage device 30 is controlled to be in a discharge mode to supply power to the post-stage circuit 40.
In the present embodiment, when the power supply is smaller than the required power, it is indicated that the power supply provided by the dc power supply 100 cannot meet the requirement of the post-stage circuit 40, and the energy storage device 30 is controlled to be in the discharging mode to supply power to the post-stage circuit 40. It can be understood that when the power supply is smaller than the required power, the energy storage device 30 is controlled to be in the discharging mode, and the power provided by the energy storage device 30 is the difference between the required power and the power supply, so that the required power of the rear stage circuit 40 can be satisfied, and the rear stage circuit 40 can operate normally.
Step S62 includes: when the supply power is greater than the demand power and the battery voltage of the energy storage device 30 is less than the full-charge voltage, the energy storage device 30 is controlled to be in the charging mode so as to be charged by the electric energy output by the first boost circuit 10.
In the present embodiment, when the supply power is greater than the demand power and the battery voltage of the energy storage device 30 is less than the full-charge voltage, the energy storage device 30 is controlled to be in the charging mode to be charged by the electric energy output by the first boost circuit 10. For example, when the power supply is greater than the required power and the battery voltage of the energy storage device 30 is less than the full-charge voltage, the battery voltage of the energy storage device is obtained, and when the battery voltage is less than the first preset voltage, a first driving signal is output to the first boost circuit 10 to reduce the output current of the first boost circuit 10 to a first preset current, and a second driving signal is output to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to a second preset current, so as to charge the energy storage device. When the battery voltage is greater than or equal to the first preset voltage, although the energy storage device 30 does not need to be charged with priority at this time, the redundant power supply can be directly charged into the energy storage device through the direct current bus at this time because the power supply is already greater than the required power, so that the waste of electric energy is avoided.
The embodiment of the application also provides a power supply circuit, referring to fig. 6, the power supply circuit includes: the first booster circuit 10, the second booster circuit 20 and the main control circuit 50. The input end of the first boost circuit 10 and the input end of the second boost circuit 20 are both used for being connected with the dc power supply 100, the output end of the first boost circuit 10 is used for being connected with a dc bus to supply power to the post-stage circuit 40 through the dc bus, the output end of the second boost circuit 20 is used for being connected with the energy storage device 30, the main control circuit 50 is respectively connected with the first boost circuit 10 and the second boost circuit 20, and the main control circuit 50 is used for executing the control method according to any one of the embodiments.
In this embodiment, the first boost circuit 10 is configured to boost the dc signal provided by the dc power supply 100 to generate a power supply signal to supply power to the post-stage circuit 40, and the second boost circuit 20 is configured to boost the dc signal provided by the dc power supply 100 to generate a charging signal to charge the energy storage device 30. The control method according to any one of the embodiments described above is performed by providing the main control circuit 50 in the present embodiment. Thus, when the battery voltage is smaller than the first preset voltage, the first driving signal is output to the first boost circuit 10 to reduce the output current of the first boost circuit 10 to the first preset current, and the second driving signal is output to the second boost circuit 20 to control the output current of the second boost circuit 20 to rise to the second preset current, so as to charge the energy storage device 30.
In this embodiment, since the input ends of the first boost circuit 10 and the second boost circuit 20 are commonly connected to the dc power supply 100, when the battery voltage is detected to be smaller than the first preset voltage, by controlling the output current of the first boost circuit 10 to gradually decrease to the first preset current, the output current of the second boost circuit 20 increases to the second preset current, so that the second boost circuit 20 charges the energy storage device 30 with the second preset current. Through setting up the second and predetermine the electric current and be greater than first and predetermine the electric current, can realize the output to energy storage device 30 of the maximum proportion of supply current that direct current power supply 100 provided for energy storage device 30 obtains the complementation fast under the condition of voltage loss, has avoided the user to take place when needs use energy storage device 30, and the problem that energy storage device 30 voltage is too low has promoted user experience.
In one embodiment, referring to FIG. 7, the power supply circuit further includes an AC/DC conversion circuit 60; the AC/DC conversion circuit 60 includes: a DC/DC (Direct Current/Direct Current) conversion unit 61 and an AC/DC (Alternating Current/Direct Current ) conversion unit 62.
Specifically, the first end of the DC/DC conversion unit 61 is connected to the first boost circuit 10 through a DC bus, and the DC/DC conversion unit 61 is configured to perform DC-DC conversion on the DC power output from the first boost circuit 10 and output the DC power. The AC/DC conversion unit 62 is connected to the second end of the DC/DC conversion unit 61, and the AC/DC conversion unit 62 is configured to perform AC/DC conversion on the DC power output from the DC/DC conversion unit 61 and output the DC power.
In this embodiment, the DC/DC conversion unit 61 is configured to perform DC conversion processing on a power supply signal on a DC bus, and the AC/DC conversion unit 62 is configured to perform AC conversion processing on the power supply signal obtained on the DC bus, so as to adjust the voltage of the power supply signal on the DC bus, so as to meet the requirements of different power loads connected to the later-stage circuit 40, and improve the application scenario of the power supply circuit.
In one particular embodiment application, the DC/DC conversion unit 61 may be an LLC resonant circuit.
In one particular embodiment application, the AC/DC conversion unit 62 may be a power correction circuit.
Specifically, the power correction circuit is connected with the resonance circuit, and the power correction circuit is used for performing power correction processing on the current at the output end of the resonance circuit. In this embodiment, the power correction circuit is configured to increase the conversion efficiency of the electric energy of the power supply circuit, and the larger the power factor value is, the higher the conversion efficiency is.
The embodiment of the application also provides electronic equipment, which comprises a memory and a processor, and is used for executing the steps of any control method.
In an embodiment, the electronic device comprises a power supply circuit as defined in any one of the above.
In this embodiment, the electronic device comprises a memory storing the steps of any of the control methods described above, and the processor is configured to perform the steps of any of the control methods described above.
In this embodiment, through integrating the steps of the control method or the power supply circuit in the electronic device, the battery voltage of the electronic device can be obtained in real time, the situation of the battery voltage can be known in real time, and when the battery voltage is smaller than the first preset voltage, the battery voltage is lower, if the user needs to use the electronic device at this time, the user's requirement cannot be met, and the battery of the electronic device needs to be charged at this time, so that the problem that the battery voltage of the electronic device is too low when the user needs to use the electronic device is avoided, and the user experience is improved.
In one embodiment, the electronic device may be an energy storage device.
In one embodiment, the electronic device may be a household appliance. For example: air conditioning, refrigerator, television, etc. The electronic device may also be an outdoor portable electric appliance or the like.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A control method of a power supply circuit, characterized in that the power supply circuit comprises: a first booster circuit and a second booster circuit; the input end of the first booster circuit and the input end of the second booster circuit are both used for being connected with a uniform direct current power supply, the output end of the first booster circuit is used for being connected with a direct current bus so as to supply power to a later-stage circuit through the direct current bus, and the output end of the second booster circuit is used for being connected with energy storage equipment; the control method comprises the following steps:
acquiring the battery voltage of the energy storage device;
when the battery voltage is smaller than a first preset voltage, a first driving signal is output to the first boost circuit so as to reduce the output current of the first boost circuit to a first preset current, and a second driving signal is output to the second boost circuit so as to control the output current of the second boost circuit to rise to a second preset current, so that the energy storage device is charged; the first preset current is the minimum current meeting the working requirement of the later-stage circuit.
2. The control method of a power supply circuit according to claim 1, characterized in that the control method further comprises:
stopping outputting the second driving signal to the second boost circuit when the battery voltage is greater than or equal to a second preset voltage so as to control the second boost circuit to stop charging the energy storage device; the second preset voltage is greater than the first preset voltage and less than the full-power voltage of the energy storage device.
3. The control method of the power supply circuit according to claim 2, characterized in that the control method further comprises:
when the battery voltage is greater than or equal to the second preset voltage, outputting a power supply driving signal to the first boost circuit so as to control the output current of the first boost circuit to rise to a third preset current; wherein the third preset current is greater than the first preset current.
4. A control method of a power supply circuit according to claim 3, characterized in that the control method further comprises:
acquiring the state of the second boost circuit when the battery voltage is greater than the first preset voltage and less than the second preset voltage;
and when the second booster circuit is in an operating state, the first driving signal and the second driving signal are kept to be output.
5. A control method of a power supply circuit according to claim 3, characterized in that the control method further comprises:
acquiring the state of the second boost circuit when the battery voltage is greater than the first preset voltage and less than the second preset voltage;
and when the second boost circuit is not in a working state, generating the power supply driving signal.
6. The method of controlling a power supply circuit according to claim 2, wherein the energy storage device is further connected to the dc bus; the control method further includes;
the required power of a later-stage circuit connected to the direct current bus is obtained;
acquiring the power supply power of the direct current power supply;
and when the power supply power is smaller than the required power, controlling the energy storage equipment to be in a discharging mode so as to supply power to the rear-stage circuit.
7. The control method of a power supply circuit according to claim 6, characterized in that the control method further comprises:
and when the power supply power is greater than the required power and the battery voltage of the energy storage device is less than the full-charge voltage, controlling the energy storage device to be in a charging mode so as to charge by utilizing the electric energy output by the first boost circuit.
8. A power supply circuit, the power supply circuit comprising: the first boost circuit, the second boost circuit and the main control circuit; the input end of the first boost circuit and the input end of the second boost circuit are both used for being connected with a direct current power supply, the output end of the first boost circuit is used for being connected with a direct current bus so as to supply power to a subsequent-stage circuit through the direct current bus, the output end of the second boost circuit is used for being connected with an energy storage device, the main control circuit is respectively connected with the first boost circuit and the second boost circuit, and the main control circuit is used for executing the control method according to any one of claims 1-7.
9. The power supply circuit of claim 8, wherein the power supply circuit further comprises an AC/DC conversion circuit; the AC/DC conversion circuit includes:
the first end of the DC/DC conversion unit is connected with the first boost circuit through the direct current bus and is used for carrying out direct current-direct current conversion on the direct current output by the first boost circuit and then outputting the direct current;
and the AC/DC conversion unit is connected with the second end of the DC/DC conversion unit and is used for carrying out AC/DC conversion on the direct current output by the DC/DC conversion unit and then outputting the direct current.
10. An electronic device comprising a memory and a processor, the electronic device being arranged to perform the steps of the control method according to any of claims 1-7, or to
The electronic device comprising a power supply circuit as claimed in any one of claims 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310340040.XA CN116418081A (en) | 2023-03-24 | 2023-03-24 | Control method of power supply circuit, power supply circuit and electronic equipment |
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| CN202310340040.XA CN116418081A (en) | 2023-03-24 | 2023-03-24 | Control method of power supply circuit, power supply circuit and electronic equipment |
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| CN202310340040.XA Pending CN116418081A (en) | 2023-03-24 | 2023-03-24 | Control method of power supply circuit, power supply circuit and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117039970A (en) * | 2023-10-08 | 2023-11-10 | 深圳鹏城新能科技有限公司 | Control method of energy storage circuit, energy storage circuit and energy storage equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117039970A (en) * | 2023-10-08 | 2023-11-10 | 深圳鹏城新能科技有限公司 | Control method of energy storage circuit, energy storage circuit and energy storage equipment |
| CN117039970B (en) * | 2023-10-08 | 2024-02-02 | 深圳鹏城新能科技有限公司 | Control method of energy storage circuit, energy storage circuit and energy storage equipment |
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