CN114421561B - Charging method and outdoor energy storage equipment - Google Patents
Charging method and outdoor energy storage equipment Download PDFInfo
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- CN114421561B CN114421561B CN202111683257.8A CN202111683257A CN114421561B CN 114421561 B CN114421561 B CN 114421561B CN 202111683257 A CN202111683257 A CN 202111683257A CN 114421561 B CN114421561 B CN 114421561B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 19
- 230000002457 bidirectional effect Effects 0.000 claims description 18
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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
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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
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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Abstract
The invention discloses a charging method and outdoor energy storage equipment, wherein the charging method comprises the following steps: acquiring power output power of a power output end and charging output power of a charging output end of a switch circuit; when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power; when the target input power is larger than the first preset power, the charging output power is adjusted to reduce the target input power to the first preset power. According to the invention, the input power of the power supply is always smaller than or equal to the first preset power by adjusting the charging output power, so that the equipment is prevented from being damaged by overlarge input power of the power supply, and the stability of the outdoor energy storage equipment is improved.
Description
Technical Field
The invention relates to outdoor energy storage equipment, in particular to a charging method and the outdoor energy storage equipment.
Background
When the outdoor energy storage equipment can be connected into a power grid for use, the load equipment is generally powered on while the internal energy storage device is charged when the outdoor energy storage equipment is connected into the power grid. The power input power of the outdoor energy storage device is equal to the sum of the power required by the load device and the power required by the energy storage device for charging. I.e., the power input power of the outdoor energy storage device increases as the power demand of the load device increases. When the power input power of the outdoor energy storage equipment exceeds the threshold value which can be borne by the input interface of the outdoor energy storage equipment, the equipment can be damaged.
Disclosure of Invention
The invention mainly aims to provide a charging method and outdoor energy storage equipment, and aims to improve the stability of the outdoor energy storage equipment.
In order to achieve the above object, the present invention provides a charging method applied to an outdoor energy storage device, where the outdoor energy storage device has a power input end and a power output end, the power input end of the outdoor energy storage device is used for accessing a power supply, the power output end of the outdoor energy storage device is used for connecting with a load device, the outdoor energy storage device includes an energy storage device and a switch circuit, the switch circuit has a first input end, a first output end, and a charging output end, the first input end of the switch circuit is connected with the power input end, the first output end of the switch circuit is connected with the power output end, and the charging output end of the switch circuit is connected with the energy storage device, the charging method includes the following steps:
acquiring target input power required to be input by a power supply input end and charging output power of a charging output end of a switch circuit;
when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power;
when the target input power is larger than the first preset power, the charging output power is adjusted to reduce the target input power to the first preset power.
In an embodiment, the obtaining of the target input power required to be input to the power input terminal and the charging output power of the charging output terminal of the switching circuit specifically includes:
acquiring power output power of a power output end and charging output power of a charging output end of a switch circuit, and calculating the sum of the power output power and the charging output power to obtain target input power required to be input by a power input end; or,
and acquiring a target input voltage and a target input current of the power input end, and determining the target input power required to be input by the power input end according to the target input voltage and the target input current of the power input end.
In an embodiment, when the target input power is greater than the first preset power, the adjusting the charging output power to reduce the target input power to the first preset power specifically includes:
calculating a difference value between the target input power and the first preset power, and determining an adjustment value of the charging output power;
and reducing the charging output power according to the adjustment value of the charging output power.
In one embodiment, the charging method further comprises:
and when the target input power is greater than or equal to the second preset power, stopping accessing the power supply.
In one embodiment, the charging method further comprises:
and when the power input end is not connected with the power supply, the energy storage device is controlled to output power supply voltage to the power output end.
The present invention also provides an outdoor energy storage device, comprising:
a power supply input terminal;
a power supply output terminal;
the charging circuit comprises a switching circuit and a charging circuit, wherein the switching circuit is provided with a controlled end, a first input end, a second input end, a first output end and a charging output end, the first input end of the switching circuit is connected with the power supply input end, and the first output end of the switching circuit is connected with the power supply output end;
the energy storage device is provided with a controlled end, an input end and an output end, the input end of the energy storage device is connected with the charging output end of the switch circuit, and the output end of the energy storage device is connected with the second input end of the switch circuit;
the control circuit is provided with a first control end, a second control end, a first detection end and a second detection end, the first control end of the control circuit is connected with the controlled end of the switch circuit, the second control end of the control circuit is connected with the controlled end of the energy storage device, the first detection end of the control circuit is connected with the power supply output end, and the second detection end of the control circuit is connected with the charging output end of the switch circuit;
the control circuit is used for controlling the power supply input end of the switch circuit to be respectively connected with the first output end and the charging output end of the switch circuit when the power supply input end of the switch circuit is connected with a power supply;
the control circuit is also used for detecting the power supply output power of the power supply output end and the charging output power of the charging output end of the switch circuit, and determining the target input power required to be input by the power supply input end of the switch circuit according to the power supply output power and the charging output power; when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power; when the target input power is larger than the first preset power, the equivalent internal resistance of the energy storage device is adjusted, and then the charging output power is adjusted, so that the target input power is reduced to the first preset power.
In one embodiment, the control circuit further has a third detection terminal;
the third detection end of the control circuit is connected with the power supply input end and used for detecting the target input power of the power supply input end, and when the target input power is smaller than or equal to the first preset power, the power supply input power is input according to the target input power; when the target input power is larger than the first preset power, the equivalent internal resistance of the energy storage device is adjusted, and then the charging output power is adjusted, so that the target input power is reduced to the first preset power.
In one embodiment, the energy storage device comprises a bidirectional inverter circuit, a battery pack and a power adjusting circuit;
the bidirectional inverter circuit is provided with a first input end, a second input end, a first output end and a second output end, the power adjusting circuit is provided with a controlled end, an input end and an output end, the first input end of the bidirectional inverter circuit is the input end of the energy storage device, and the first output end of the bidirectional inverter circuit is connected with the input end of the power adjusting circuit;
the controlled end of the power adjusting circuit is the controlled end of the energy storage device, the output end of the power adjusting circuit is connected with the input end of the battery pack, the second input end of the bidirectional inverter circuit is connected with the output end of the battery pack, and the second output end of the bidirectional inverter circuit is the output end of the energy storage device;
the control circuit is used for adjusting the resistance value of the power adjusting circuit when the input power of the power supply is larger than a first preset power so as to reduce the target input power to the first preset power.
In an embodiment, the control circuit is further configured to control the switching circuit to open a path between the input terminal and the first output terminal and between the input terminal and the charging output terminal when the power input power is greater than a second preset power.
In an embodiment, the control circuit is further configured to control the energy storage device to output a supply voltage to the power output terminal when the power input terminal is not connected to a power supply.
According to the invention, the input power of the power supply is always smaller than or equal to the first preset power by adjusting the charging output power, so that the equipment is prevented from being damaged by overlarge input power of the power supply, and the stability of the outdoor energy storage equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating steps of a charging method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an outdoor energy storage device according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of an outdoor energy storage device according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a charging method applied to an outdoor energy storage device, where the outdoor energy storage device has a power input end and a power output end, the power input end of the outdoor energy storage device is used for accessing a power supply, the power output end of the outdoor energy storage device is used for connecting with a load device, the outdoor energy storage device includes an energy storage device and a switching circuit, the switching circuit has a first input end, a first output end, and a charging output end, the first input end of the switching circuit is connected with the power input end, the first output end of the switching circuit is connected with the power output end, and the charging output end of the switching circuit is connected with the energy storage device, and the charging method includes the following steps:
s100: acquiring target input power required to be input by a power input end and charging output power of a charging output end of a switching circuit;
s200: when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power;
s300: when the target input power is larger than the first preset power, the charging output power is adjusted to reduce the target input power to the first preset power.
When the outdoor energy storage equipment is connected with a power grid power supply to supply power to the load equipment and the internal energy storage device is charged, the power grid power supply can deliver power with power as much as the power of the load equipment and the internal energy storage device need. If the power required by the load equipment is too large, the power of the power supply connected to the outdoor energy storage equipment is too large, and the outdoor energy storage equipment is damaged. Therefore, there is a need to ensure that the power supply input power of the outdoor energy storage device is within an acceptable power threshold.
Take the first predetermined power as 2000W for example. When the power output power of the power output end is 1000W and the charging output power of the charging output end of the switch circuit is 500W, determining that the target input power required to be input by the power input end is 1500W and is less than 2000W, and inputting the power input power according to 1500W; when the power output power of the power output end is 1000W and the charging output power of the charging output end of the switch circuit is 1000W, determining that the target input power required to be input by the power input end is 2000W and is equal to 2000W, and inputting the power input power according to 2000W; when the power output power of the power output end is 1200W and the charging output power of the charging output end of the switch circuit is 1000W, the target input power required to be input by the power input end is determined to be 2200W and is larger than 2000W, the charging output power is reduced, and the power input power is enabled to be 2000W.
According to the invention, the input power of the power supply is always smaller than or equal to the first preset power by adjusting the charging output power, so that the equipment is prevented from being damaged by overlarge input power of the power supply, and the stability of the outdoor energy storage equipment is improved.
In an embodiment, the obtaining of the target input power required to be input to the power input terminal and the charging output power of the charging output terminal of the switching circuit specifically includes:
the method comprises the steps of obtaining power output power of a power output end and charging output power of a charging output end of a switch circuit, calculating the sum of the power output power and the charging output power, and obtaining target input power required to be input by a power input end.
Take the first predetermined power as 2000W for example. When the power output power of the power output end is 1000W and the charging output power of the charging output end of the switch circuit is 500W, determining that the target input power required to be input by the power input end is 1500W; when the power output power of the power output end is 1000W and the charging output power of the charging output end of the switch circuit is 1000W, determining that the target input power required to be input by the power input end is 2000W; when the power output power of the power supply output end is 1200W and the charging output power of the charging output end of the switch circuit is 1000W, the target input power required to be input by the power supply input end is determined to be 2200W.
Or, acquiring a target input voltage and a target input current of the power input end, and determining the target input power required to be input by the power input end according to the target input voltage and the target input current of the power input end. When the target input power is larger than the first preset power, the charging output power is adjusted to reduce the target input power to the first preset power.
In this embodiment, the target input power of the power input terminal may be determined by detecting the power output power of the power output terminal and the charging output power of the charging output terminal of the switching circuit, or the target input power of the power input terminal may be directly obtained by detecting the target input voltage and the target input current of the power input terminal. The user can select a proper acquisition mode according to the actual application scene.
In an embodiment, when the target input power is greater than the first preset power, the adjusting the charging output power to reduce the target input power to the first preset power specifically includes:
calculating a difference value between the target input power and the first preset power, and determining an adjustment value of the charging output power;
and reducing the charging output power according to the adjustment value of the charging output power.
Take the first predetermined power as 2000W for example. When the power output power of the power supply output end is 1200W and the charging output power of the charging output end of the switch circuit is 1000W, the target input power required to be input by the power supply input end is 2200W and is more than 2000W. And calculating the difference value between the target input power and the first preset power to be 200W, and then reducing the charging output power to be 200W, namely adjusting the charging output power to be 800W.
In the embodiment, the input power of the power supply is always smaller than or equal to the first preset power by adjusting the charging output power, so that the equipment is prevented from being damaged by the overlarge input power of the power supply.
In one embodiment, the charging method further comprises:
and when the target input power is greater than or equal to the second preset power, stopping accessing the power supply.
The second preset power is larger than the first preset power. When the target input power is larger than or equal to the second preset power, the outdoor energy storage equipment starts a protection function, the switch circuit is controlled to cut off the power supply input, and the outdoor energy storage equipment is prevented from being damaged due to large voltage impact.
Take the second predetermined power as 2500W for example. When the power output power of the power output end is 2500W and the charging output power of the charging output end of the switch circuit is 1000W, the target input power required to be input by the power input end is determined to be 3500W which is larger than 2000W. The difference between the target input power and the first preset power is calculated to be 1500W. The charging output power can only be reduced by 1000W at most, and at this time, even after the charging output power is adjusted to zero, the target input power is 2500W and is equal to the second preset power. The outdoor energy storage equipment starts a protection function and controls the switching circuit to cut off the power supply input.
This embodiment is through in time breaking power input when target input power is greater than or equal to the second and predetermines power, avoids outdoor energy storage equipment to receive big voltage impact and damage, improves outdoor energy storage equipment's stability.
In one embodiment, the charging method further comprises:
and when the power input end is not connected with the power supply, the energy storage device is controlled to output power supply voltage to the power output end. The load device is powered by the energy storage device of the outdoor energy storage device.
Referring to fig. 2 to 3, the invention further provides an outdoor energy storage device, which includes a power input end 10, a power output end 11, a switch circuit 20, an energy storage device 30 and a control circuit 40.
The switch circuit 20 has a controlled end, a first input end, a second input end, a first output end and a charging output end, the first input end of the switch circuit 20 is connected with the power input end 10, and the first output end of the switch circuit 20 is connected with the power output end.
The energy storage device 30 has a controlled end, an input end and an output end, the input end of the energy storage device 30 is connected with the charging output end of the switch circuit 20, and the output end of the energy storage device 30 is connected with the second input end of the switch circuit 20.
The control circuit 40 has a first control end, a second control end, a first detection end and a second detection end, the first control end of the control circuit 40 is connected with the controlled end of the switch circuit 20, the second control end of the control circuit 40 is connected with the controlled end of the energy storage device 30, the first detection end of the control circuit 40 is connected with the power output end 11, and the second detection end of the control circuit 40 is connected with the charging output end of the switch circuit 20.
The control circuit 40 is configured to control the power input terminal 10 of the switch circuit 20 to be connected to the first output terminal and the charging output terminal of the switch circuit 20 when the power input terminal 10 of the switch circuit 20 is connected to a power supply.
The control circuit 40 is further configured to detect a power output power of the power output terminal 11 and a charging output power of the charging output terminal of the switch circuit 20, and determine a target input power required to be input by the power input terminal 10 of the switch circuit 20 according to the power output power and the charging output power; when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power; when the target input power is greater than the first preset power, the equivalent internal resistance of the energy storage device 30 is adjusted, and the charging output power is further adjusted, so that the target input power is reduced to the first preset power.
The energy storage device 30 may be an Uninterruptible Power Supply (UPS). The switching circuit 20 includes a first switch, a second switch, and a third switch. The control circuit 40 includes a microprocessor.
When the outdoor energy storage device is connected to the power supply of the power grid to supply power to the load device and the internal energy storage device 30 is charged, the power supply of the power grid can deliver power of the power grid according to the power required by the load device and the internal energy storage device 30. If the power required by the load equipment is too large, the power of the power supply connected to the outdoor energy storage equipment is too large, and the outdoor energy storage equipment is damaged. Therefore, there is a need to ensure that the power supply input power of the outdoor energy storage device is within an acceptable power threshold.
Take the first predetermined power as 2000W for example. When the power output power of the first output terminal of the switch circuit 20 is 1000W and the charging output power of the charging output terminal of the switch circuit 20 is 500W, determining that the target input power required to be input by the power input terminal 10 is 1500W and is less than 2000W, and inputting the power input power according to 1500W; when the power output power of the first output terminal of the switch circuit 20 is 1000W and the charging output power of the charging output terminal of the switch circuit 20 is 1000W, determining that the target input power required to be input by the power input terminal 10 is 2000W, and is equal to 2000W, inputting the power input power according to 2000W; when the power output of the first output terminal of the switch circuit 20 is 1200W and the charging output power of the charging output terminal of the switch circuit 20 is 1000W, it is determined that the target input power required to be input by the power input terminal 10 is 2200W and is greater than 2000W, and the charging output power is reduced to make the power input power be 2000W.
According to the invention, the target input power required to be input by the power input end is determined through the power output power and the charging output power, and the power input power is always smaller than or equal to the first preset power by adjusting the charging output power, so that the equipment is prevented from being damaged due to overlarge power input power, and the stability of the outdoor energy storage equipment is improved.
In one embodiment, the control circuit 40 further has a third detection terminal.
The third detection end of the control circuit 40 is connected to the power input end, the third detection end of the control circuit 40 is used for detecting the target input power of the power input end, and when the target input power is less than or equal to a first preset power, the power input power is input according to the target input power; when the target input power is greater than the first preset power, the equivalent internal resistance of the energy storage device 30 is adjusted, and the charging output power is further adjusted, so that the target input power is reduced to the first preset power.
The present embodiment can also directly detect the target input power at the power input terminal. Specifically, the target input voltage and the target input current of the power input end determine the target input power required to be input by the power input end according to the target input voltage and the target input current of the power input end. When the target input power is larger than the first preset power, the charging output power is adjusted to reduce the target input power to the first preset power.
In this embodiment, the target input power of the power input terminal may be determined by detecting the power output power of the power output terminal and the charging output power of the charging output terminal of the switching circuit, or the target input power of the power input terminal may be directly obtained by detecting the target input voltage and the target input current of the power input terminal. The user can select a proper acquisition mode according to the actual application scene.
In one embodiment, the energy storage device 30 includes a bidirectional inverter circuit, a battery pack, and a power regulation circuit;
the bidirectional inverter circuit is provided with a first input end, a second input end, a first output end and a second output end, the power adjusting circuit is provided with a controlled end, an input end and an output end, the first input end of the bidirectional inverter circuit is the input end of the energy storage device 30, and the first output end of the bidirectional inverter circuit is connected with the input end of the power adjusting circuit;
the controlled end of the power adjusting circuit is the controlled end of the energy storage device 30, the output end of the power adjusting circuit is connected with the input end of the battery pack, the second input end of the bidirectional inverter circuit is connected with the output end of the battery pack, and the second output end of the bidirectional inverter circuit is the output end of the energy storage device 30;
the control circuit 40 is configured to adjust the resistance of the power adjustment circuit when the power input power is greater than the first preset power, so as to reduce the target input power to the first preset power.
In the above embodiments, the power adjusting circuit may be a digital potentiometer. The battery pack further comprises a charging chip, and the digital potentiometer is connected with the charging chip. The control circuit 40 adjusts the equivalent resistance of the energy storage device 30 by controlling the resistance of the whole power adjusting circuit, so as to reduce the target input power to the first predetermined power.
In this embodiment, the equivalent resistance of the energy storage device 30 is adjusted by adjusting the resistance of the power adjusting circuit, so as to avoid directly adjusting the energy storage device 30, and the adjustment is more convenient.
In an embodiment, the control circuit 40 is further configured to control the switch circuit 20 to open a path between the input terminal and the first output terminal and the charging output terminal when the power input power is greater than a second predetermined power.
In an embodiment, the control circuit 40 is further configured to control the energy storage device to output a supply voltage to the power output terminal 11 when the power input terminal 10 is not powered on.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A charging method applied to an outdoor energy storage device, the outdoor energy storage device having a power input end and a power output end, the power input end of the outdoor energy storage device being used for accessing a power supply, the power output end of the outdoor energy storage device being used for connecting with a load device, the outdoor energy storage device including an energy storage device and a switch circuit, the switch circuit having a first input end, a first output end and a charging output end, the first input end of the switch circuit being connected with the power input end, the first output end of the switch circuit being connected with the power output end, the charging output end of the switch circuit being connected with the energy storage device, the charging method comprising the steps of:
acquiring target input power required to be input by a power supply input end and charging output power of a charging output end of a switch circuit;
when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power;
when the target input power is larger than the first preset power, adjusting the charging output power to reduce the target input power to the first preset power; the first preset power is a power threshold value which can be borne by the power supply input end.
2. The charging method according to claim 1, wherein the obtaining of the target input power required to be input to the power input terminal and the charging output power of the charging output terminal of the switching circuit specifically includes:
acquiring power output power of a power output end and charging output power of a charging output end of a switch circuit, and calculating the sum of the power output power and the charging output power to obtain target input power required to be input by a power input end; or,
and acquiring a target input voltage and a target input current of the power input end, and determining the target input power required to be input by the power input end according to the target input voltage and the target input current of the power input end.
3. The charging method according to claim 1, wherein when the target input power is greater than the first predetermined power, the adjusting the charging output power to reduce the target input power to the first predetermined power is specifically:
calculating a difference value between the target input power and the first preset power, and determining an adjustment value of the charging output power;
and reducing the charging output power according to the adjustment value of the charging output power.
4. The charging method according to claim 1, further comprising:
and when the target input power is greater than or equal to the second preset power, stopping accessing the power supply.
5. The charging method according to claim 1, further comprising:
and when the power input end is not connected with the power supply, the energy storage device is controlled to output the power supply voltage to the power output end.
6. An outdoor energy storage device, comprising:
a power supply input terminal;
a power supply output terminal;
the charging circuit comprises a switching circuit and a charging circuit, wherein the switching circuit is provided with a controlled end, a first input end, a second input end, a first output end and a charging output end, the first input end of the switching circuit is connected with the power supply input end, and the first output end of the switching circuit is connected with the power supply output end;
the energy storage device is provided with a controlled end, an input end and an output end, the input end of the energy storage device is connected with the charging output end of the switch circuit, and the output end of the energy storage device is connected with the second input end of the switch circuit;
the control circuit is provided with a first control end, a second control end, a first detection end and a second detection end, the first control end of the control circuit is connected with the controlled end of the switch circuit, the second control end of the control circuit is connected with the controlled end of the energy storage device, the first detection end of the control circuit is connected with the power supply output end, and the second detection end of the control circuit is connected with the charging output end of the switch circuit;
the control circuit is used for controlling the power supply input end of the switch circuit to be respectively connected with the first output end and the charging output end of the switch circuit when the power supply input end of the switch circuit is connected with a power supply;
the control circuit is also used for detecting the power supply output power of the power supply output end and the charging output power of the charging output end of the switch circuit, and determining the target input power required to be input by the power supply input end of the switch circuit according to the power supply output power and the charging output power; when the target input power is less than or equal to a first preset power, inputting the input power of the power supply according to the target input power; when the target input power is larger than the first preset power, adjusting the equivalent internal resistance of the energy storage device, and further adjusting the charging output power so as to reduce the target input power to the first preset power; the first preset power is a power threshold value which can be borne by the power supply input end.
7. The outdoor energy storage device of claim 6, wherein said control circuit further has a third detection terminal;
the third detection end of the control circuit is connected with the power supply input end and used for detecting the target input power of the power supply input end, and when the target input power is smaller than or equal to the first preset power, the power supply input power is input according to the target input power; when the target input power is larger than the first preset power, the equivalent internal resistance of the energy storage device is adjusted, and then the charging output power is adjusted, so that the target input power is reduced to the first preset power.
8. The outdoor energy storage device of claim 6, wherein said energy storage means comprises a bidirectional inverter circuit, a battery pack, and a power conditioning circuit;
the bidirectional inverter circuit is provided with a first input end, a second input end, a first output end and a second output end, the power adjusting circuit is provided with a controlled end, an input end and an output end, the first input end of the bidirectional inverter circuit is the input end of the energy storage device, and the first output end of the bidirectional inverter circuit is connected with the input end of the power adjusting circuit;
the controlled end of the power adjusting circuit is the controlled end of the energy storage device, the output end of the power adjusting circuit is connected with the input end of the battery pack, the second input end of the bidirectional inverter circuit is connected with the output end of the battery pack, and the second output end of the bidirectional inverter circuit is the output end of the energy storage device;
the control circuit is used for adjusting the resistance value of the power adjusting circuit when the input power of the power supply is larger than a first preset power so as to reduce the target input power to the first preset power.
9. The outdoor energy storage device of claim 6, wherein said control circuit is further configured to control said switching circuit to open a path between the first input of the switching circuit and the first output and charging output of the switching circuit when the power supply input power is greater than a second predetermined power.
10. The outdoor energy storage device of claim 6, wherein said control circuit is further configured to control said energy storage device to output a supply voltage to said power output when said power input is not coupled to a power source.
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| CN104009529A (en) * | 2014-06-13 | 2014-08-27 | 南京矽力杰半导体技术有限公司 | Control circuit, battery power supply device and control method |
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| EP0623985B1 (en) * | 1993-05-05 | 1998-07-29 | Sgs-Thomson Microelectronics Pte Ltd. | Power Sharing detector |
| CN1691459A (en) * | 2004-04-22 | 2005-11-02 | 日本电气株式会社 | Portable electronic device and mobile communication terminal |
| EP2299556B1 (en) * | 2009-09-18 | 2019-07-03 | CTEK Sweden AB | Battery charging and electrical energy delivery system and battery operated system |
| CN102629778B (en) * | 2011-11-09 | 2014-03-26 | 广东志成冠军集团有限公司 | Multi-system modularization emergency power supply (EPS) |
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| CN104009529A (en) * | 2014-06-13 | 2014-08-27 | 南京矽力杰半导体技术有限公司 | Control circuit, battery power supply device and control method |
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