CN117203875A - Power supply device and control method thereof - Google Patents
Power supply device and control method thereof Download PDFInfo
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- CN117203875A CN117203875A CN202280011174.0A CN202280011174A CN117203875A CN 117203875 A CN117203875 A CN 117203875A CN 202280011174 A CN202280011174 A CN 202280011174A CN 117203875 A CN117203875 A CN 117203875A
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- power supply
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims abstract description 538
- 238000007599 discharging Methods 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- YZSKZXUDGLALTQ-UHFFFAOYSA-N [Li][C] Chemical compound [Li][C] YZSKZXUDGLALTQ-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008029 eradication Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- H02J7/36—Arrangements using end-cell switching
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a power supply device and a control method thereof. The power supply device includes: a housing; a first energy storage device comprising at least one first energy storage element removably mounted to the housing; a second energy storage device comprising at least one second energy storage element disposed in the housing; a power output interface configured to output power to an external powered device; the discharging circuit is electrically connected with the power output interface and is also electrically connected with the second energy storage device and the first energy storage device; and a controller that controls a discharge state of the discharge circuit. The controller controls the discharging circuit so that the first energy storage device discharges when the first electric quantity parameter value of the first energy storage device is higher than a first preset value, the second energy storage device does not discharge, and the first energy storage device does not discharge when the first electric quantity parameter value of the first energy storage device is lower than the first preset value, and the second energy storage device discharges.
Description
The present application claims priority from the chinese patent application of application number 202110903836.2, filed by the chinese patent office at month 8 and 6 of 2021, the entire contents of which are incorporated herein by reference.
The present application relates to a power supply device, and for example, to a power supply device and a control method thereof.
With the development of battery technology, portable power supply device components are moving into the lives of people. The power supply device generally has two types, one including an internal battery and the other including an external battery. The power supply device only comprising the built-in battery has limited endurance and limited load carrying capacity, and cannot meet the requirements of users for using high-power devices or long-time electricity. In particular, in the case where a user needs to live outdoors or play, the electric energy stored in the power supply device including the built-in battery is far from meeting the user's needs. And the service life of the power supply device is greatly influenced after the built-in battery is discharged for a plurality of times. For the power supply device only comprising the external battery, the weight of the external battery is heavy, and sometimes the situation of insufficient electric quantity of the external battery also exists, if the user needs to use the power supply device urgently, the power supply device cannot output electric energy timely because of the insufficient electric quantity of the external battery.
Disclosure of Invention
The application provides a power supply device and a control method thereof, which can meet the requirements of users for emergency power utilization and long-time power utilization.
The application adopts the following technical scheme:
a power supply device, comprising: a housing; a first energy storage device comprising at least one first energy storage element, the first energy storage device being detachably mounted to the housing; the second energy storage device comprises at least one second energy storage element, and the second energy storage element is arranged in the shell; the electric energy output interface is arranged to output electric power to external power utilization equipment; the discharging circuit is electrically connected with the electric energy output interface, and is also electrically connected with the second energy storage device and the first energy storage device; a controller controlling a discharge state of the discharge circuit; the controller controls the discharging circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when the first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value.
In some embodiments, the second energy storage device is fixedly disposed within the housing.
In some embodiments, the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
In some embodiments, the electrical energy output interface comprises a dc output interface, and the discharge circuit is electrically connected to the dc output interface and the second energy storage device, and the discharge circuit is electrically connected to the dc output interface and the first energy storage device.
In some embodiments, the power output interface further comprises an ac output interface, and the power supply device further comprises an inverter for converting dc power to ac power, the inverter electrically connecting the ac output interface and the discharge circuit.
In some embodiments, the power supply device further comprises a boost circuit electrically connecting the discharge circuit and the inverter.
In some embodiments, the maximum output power of the power supply device is 500W or more and 6000W or less.
In some embodiments, the power supply device further comprises: the charging circuit is electrically connected with the electric energy input interface and the second energy storage device, the charging circuit is electrically connected with the electric energy input interface and the first energy storage device, the charging circuit is electrically connected with the controller, and the controller controls the charging state of the charging circuit.
In some embodiments, the charging circuit is configured to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
In some embodiments, the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than a second preset value.
In some embodiments, the first power parameter value is a voltage value.
In some embodiments, the first power parameter value is a remaining power value.
In some embodiments, the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
In some embodiments, the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
In some embodiments, the first energy storage element comprises a first positive electrode made of a first material and the second energy storage element comprises a second positive electrode made of a second material.
In some embodiments, the energy density of the first energy storage element is different from the energy density of the second energy storage element.
In some embodiments, the housing is formed with a mounting portion to which the first energy storage device is slidably mounted.
In some embodiments, the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
In some embodiments, the housing provides two mounting portions, one disposed on each of two opposing surfaces of the housing.
In some embodiments, the maximum discharge power of the first energy storage device is greater than or equal to 1000W and less than or equal to 10000W.
In some embodiments, the power supply device further comprises: and the communication module can receive information sent by the remote equipment or can send the information to the remote equipment.
In some embodiments, the power supply device further comprises a power input interface and an adapter disposed separately from the housing, the adapter comprising an adapter output interface mated with the power input interface.
In some embodiments, the adapter includes an adapter input interface connectable to a utility grid and a rectifying circuit connected between the adapter input interface and the adapter output interface.
In some embodiments, the adapter includes an adapter input interface connectable to the solar device.
In some embodiments, the first power parameter value is a voltage value of the first energy storage device, and the first preset value is set to a discharge cutoff voltage of the first energy storage device.
A power supply device, comprising: a housing; a first energy storage device comprising at least one first energy storage element, the first energy storage device being removably mounted to the housing, the first energy storage device further being configured to be removable from the housing to power a power tool; the second energy storage device comprises at least one second energy storage element, and the second energy storage element is arranged in the shell; the electric energy output interface is arranged to output electric power to external electric equipment; the discharging circuit is electrically connected with the electric energy output interface, and is also electrically connected with the second energy storage device and the first energy storage device; a controller controlling a discharge state of the discharge circuit; the controller controls the discharging circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when the first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value.
In some embodiments, the second energy storage device is fixedly disposed within the housing.
In some embodiments, the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
In some embodiments, the maximum output power of the power supply device is 500W or more and 6000W or less.
In some embodiments, the power supply device further comprises a charging circuit arranged to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
In some embodiments, the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than a second preset value.
In some embodiments, the first power parameter value is a voltage value.
In some embodiments, the first power parameter value is a remaining power value.
In some embodiments, the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
In some embodiments, the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
In some embodiments, the housing is formed with a mounting portion to which the first energy storage device is slidably mounted.
In some embodiments, the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
In some embodiments, the housing provides two mounting portions that are symmetrically disposed on opposite sides of the housing.
In some embodiments, the maximum discharge power of the first energy storage device is greater than or equal to 1000W and less than or equal to 10000W.
In some embodiments, the first power parameter value is a voltage value of the first energy storage device, and the first preset value is set to a discharge cutoff voltage of the first energy storage device.
A power supply system including a power supply device and a charger, the power supply device comprising: a housing; a first energy storage device comprising at least one first energy storage element, the first energy storage device being detachably mounted to the housing; the second energy storage device comprises at least one second energy storage element, and the second energy storage element is at least partially arranged in the shell; the electric energy output interface is arranged to output electric power to external electric equipment; the discharging circuit is electrically connected with the electric energy output interface, and is also electrically connected with the second energy storage device and the first energy storage device; a controller controlling a discharge state of the discharge circuit; the controller controls the discharging circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when the first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value; the first energy storage device is also configured to be removably mounted to a charger configured to charge the first energy storage device when coupled thereto.
In some embodiments, the first energy storage device is further configured to be removable from the housing to power a power tool.
In some embodiments, the housing is formed with a first mounting portion, the first energy storage device is configured to be slidably coupled to the first mounting portion, the charger is formed with a second mounting portion, and the first energy storage device is configured to be slidably coupled to the second mounting portion.
In some embodiments, the second energy storage device is fixedly disposed within the housing.
In some embodiments, the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
In some embodiments, the maximum output power of the power supply device is 500W or more and 6000W or less.
In some embodiments, the power supply device further comprises a charging circuit arranged to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
In some embodiments, the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than a second preset value.
In some embodiments, the first power parameter value is a voltage value.
In some embodiments, the first power parameter value is a remaining power value.
In some embodiments, the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
In some embodiments, the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
In some embodiments, the housing is formed with a mounting portion to which the first energy storage device is slidably mounted.
In some embodiments, the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
In some embodiments, the housing provides two mounting portions that are symmetrically disposed on opposite sides of the housing.
In some embodiments, the maximum discharge power of the first energy storage device is greater than or equal to 1000W and less than or equal to 10000W.
In some embodiments, the first power parameter value is a voltage value of the first energy storage device, and the first preset value is set to a discharge cutoff voltage of the first energy storage device.
A control method of a power supply apparatus, the power supply apparatus comprising: the device comprises a shell, a first energy storage device, a second energy storage device, a discharging circuit and a controller, wherein the first energy storage device comprises at least one first energy storage element which is detachably arranged on the shell; the control method comprises the following steps: judging whether a first power parameter value of the first energy storage device is higher than a first preset value or not; controlling a discharge state of the discharge circuit according to whether the first power parameter value is higher than a first preset value; and when the first electric power parameter value of the first energy storage device is lower than the first preset value, controlling the first energy storage device to discharge and the second energy storage device to discharge.
The power supply device has strong endurance capability, can ensure the power supply device to have electricity with high probability, and has long service life.
FIG. 1 is a perspective view of a power supply device of one embodiment;
fig. 2 is a perspective view of a main body portion of the power supply device of fig. 1 and a first energy storage device;
fig. 3 is a perspective view of a main body portion of the power supply device of fig. 1;
FIG. 4 is an inside view of the first energy storage device of FIG. 2;
fig. 5 is an inner view of a main body portion of the power supply device of fig. 1;
FIG. 6 is a perspective view of the body portion shown in FIG. 5 with the second housing removed;
fig. 7 is a structural view of a main body portion of the power supply apparatus and the electric power tool in fig. 1;
FIG. 8 is a circuit block diagram of the power supply apparatus of FIG. 1;
FIG. 9 is a circuit diagram of the power management module of FIG. 8;
FIG. 10 is a control logic diagram of the power management module of FIG. 8;
FIG. 11 is a perspective view of a power supply system of one embodiment;
fig. 12 is a plan view of the power supply system of fig. 11 when a battery pack is coupled to a charger;
fig. 13 is a circuit diagram of the boost circuit in fig. 8;
fig. 14 is a circuit diagram of the discharge circuit in fig. 8.
The power supply apparatus 100 shown in fig. 1 serves as a power station that is convenient for a user to carry. The power supply device 100 may be used indoors or may be moved to outdoors. In this embodiment, the power supply device 100 is convenient for a user to carry, for example, a portable power supply device convenient for the user to carry. For example, it can provide electrical power to a lighting device or other necessary household appliances to power when there is a power outage in the room. Alternatively, when the user needs to go outdoors to camp or get far enough, no power supply is usually set in the surrounding environment, and the power supply device 100 can be used for providing illumination requirements or supplying power to other electric equipment, so as to meet the requirements of the user living outdoors. The electrical consumers can be, for example, lamps, mosquito eradication devices, fans, cell phones, computers, living equipment, etc. Alternatively, when the user needs to perform an operation outdoors, the user needs to use the electric power tool 200 shown in fig. 7, and at this time, the electric power tool 200 may be supplied with electric power by the power supply device 100 to satisfy the long-term operation requirement of the electric power tool 200.
In fact, the power supply device 100, which adopts the essential content of the following technical solutions of the present application, falls within the scope of the present application.
As shown in fig. 1 to 5, the power supply device 100 includes: the housing 11, the first energy storage device 12, the second energy storage device 13 and the electrical energy output interface 14.
The housing 11 forms a main body portion of the power supply device 100, and the housing 11 may have a substantially cubic shape, which is not limited thereto. In order to facilitate the operation of the user, a handle may be further provided on the housing 11 to facilitate the user to pull up the power supply device 100. Alternatively, in other embodiments, wheels may be disposed under the housing 11, and the wheels support the housing 11, and the handles may be configured as telescopic handles, so that a user may conveniently pull the power supply device 100 to walk in a labor-saving manner. The housing 11 may also be provided with some frames for protecting the power supply device 100, which may be provided as metal frames.
The first energy storage means 12 are arranged to store energy and the second energy storage means 13 are also arranged to store energy. The first energy storage means 12 comprise at least one first energy storage element 121. The second energy storage means 13 comprises at least one second energy storage element 131. The first energy storage device 12 is connected to the housing 11 in a first mounting manner such that the first energy storage device 12 is detachably mounted to the housing 11. The first energy storage device 12 may be detached from the housing 11 by the user, so that the user may also carry the power supply device 100 without the first energy storage device 12 mounted thereto. When the user needs to use less electric energy, the user can carry the power supply device 100 more effort-saving and also can carry the power supply device 100 conveniently. For example, in the present embodiment, the first energy storage device 12 includes a battery pack 122, and the battery pack 122 is detachably mounted to the housing 11. The second energy storage device 13 is connected to the housing 11 in a second mounting manner different from the first mounting manner. The second mounting manner is different from the first mounting manner in that the first energy storage device 12 is detachably mounted to the housing 11, for example, the battery pack 122 is detachably mounted to the housing 11. The battery pack 122 includes a battery pack case 122a and a first energy storage element 121 disposed within the battery pack case 122a, and the first energy storage element 121 may be, for example, a cylindrical cell element. The battery pack case 122a is provided with a battery pack interface 122b for removably attaching the battery pack 122 to the case 11, and the case 11 is provided with an attachment portion 111 corresponding to the battery pack 122. The cooperation of the battery pack interface 122b and the mounting portion 111 enables the battery pack 122 to be electrically connected to the housing 11 as well as to be mechanically connected to the housing 11. A slide rail 122c is further provided at the battery pack interface 122b, and the slide rail 122c guides the battery pack 122 to be slidably mounted to the housing 11.
The second energy storage device 13 is connected to the housing 11 in a second mounting manner, which is different from the first mounting manner, the first energy storage device 12 is detachably mounted to the housing 11, and the second energy storage device 13 may be connected to the housing 11 in a fixed mounting manner different from the detachable mounting. Of course, it should be noted that the second installation manner is not limited to the second energy storage device 13 being detachably installed to the housing 11, and the first energy storage device 12 and the second energy storage device 13 may be detachably installed to the housing 11, but the first energy storage device 12 is installed to the housing 11 in a pluggable manner, and the second energy storage device 13 is installed to the housing 11 in another detachable connection manner than the pluggable manner, for example, the second energy storage device 13 is detachably installed to the interior of the housing 11 in a snap connection manner, and then the pluggable manner of the first energy storage device 12 and the snap connection manner of the second energy storage device 13 may be considered to be different, that is, the first installation manner of the first energy storage device 12 and the second installation manner of the second energy storage device 13 are also different.
In the present embodiment, the second installation manner is such that the second energy storage device 13 is fixedly installed to the housing 11, and the second energy storage element 131 of the second energy storage device 13 is located in the housing 11. While the first energy storage device 12 is coupled to the mounting portion 111, the first energy storage device 12 is disposed outside the housing 11, and the first energy storage element 121 is also disposed outside the housing 11. At this point, it will be appreciated that the first energy storage device 12 may be considered an external power source, while the second energy storage device 13 may be considered an internal power source.
The second energy storage device 13 is configured to be fixedly mounted to the housing 11, where the means of fixedly coupling includes, but is not limited to, welding, bolting, clamping or non-articulating. When the second energy storage device 13 is fixedly mounted to the housing 11, the second energy storage device 13 may not be detachable, or the user may detach it from the housing 11 by means of an external tool, thereby facilitating maintenance of the second energy storage device 13. The second energy storage device 13 includes a second housing 132, the second energy storage element 131 is disposed in the second housing 132, and the second housing 132 can protect and fix the second energy storage element 131. In this embodiment, the second energy storage element 131 may also be a cylindrical battery cell. Of course, it is understood that the shape of the second energy storage element 131 may be rectangular or other shapes.
The power output interface 14 is configured to output power to an external powered device. The electric energy output interface 14 is electrically connected to the first energy storage device 12 and the second energy storage device 13, respectively, and the electric power stored in the first energy storage device 12 and the second energy storage device 13 is output through the electric energy output interface 14. The power output interface 14 is provided on the housing 11. External powered devices may be removably connected to power output interface 14 for supplying power via power supply device 100.
The power supply device 100 further includes a circuit board assembly 15, the circuit board assembly 15 being disposed within the housing 11. As shown in fig. 5 and 6, the circuit board assembly 15 may include at least one circuit board. In this embodiment, the circuit board assembly 15 includes two circuit boards disposed in parallel. The circuit board assembly 15 is disposed on the upper side of the second energy storage device 13. The power supply device 100 may further include: and a heat dissipation element 16, wherein the heat dissipation element 16 is connected or contacted with the circuit board assembly 15 to dissipate heat of the circuit board assembly 15. The power supply device 100 may further include a fan that generates a heat dissipating airflow through the circuit board assembly 15 and the heat dissipating element 16 when rotated.
As shown in fig. 8, the power supply device 100 further includes a discharge circuit 18 and a controller 19. The discharge circuit 18 is electrically connected to the power output interface 14, and the discharge circuit 18 is also electrically connected to the first energy storage device 12 and the second energy storage device 13. The discharging circuit 18 is configured to output the electric power stored by the first energy storage device 12 and the second energy storage device 13 to the electric power output interface 14, and then output the electric power to external electric equipment through the electric power output interface 14. The controller 19 is electrically connected to the discharge circuit 18 to control a discharge state of the discharge circuit 18. When the first power parameter value of the first energy storage device 12 is higher than the first preset value, the controller 19 controls the discharging circuit 18 to be in the first discharging state so that the first energy storage device 12 is discharged and the second energy storage device 13 is not discharged. When the first power parameter value of the first energy storage device 12 is lower than the first preset value, the controller 19 controls the discharging circuit 18 to be in the second discharging state so that the first energy storage device 12 is not discharged and the second energy storage device 13 is discharged. The discharging circuit 18 can discharge the first energy storage device 12 to a certain state before discharging the second energy storage device 13.
By controlling the discharge state of the discharge circuit 18 by the controller 19, it is ensured that the second energy storage means 13 fixedly mounted to the housing 11 is powered with a high probability. When some conditions need to use the power supply device 100 in an emergency, even if the first energy storage device 12 is not powered, a user can carry the power supply device 100 to supply power to external electric equipment, and meanwhile, the first energy storage device 12 charges through other equipment, so that when the power returns again, the electric quantity of the first energy storage device 12 meets a certain working requirement, the requirement of continuous power consumption of the user cannot be influenced, and the working efficiency is improved.
When the first detachable energy storage device 12 is discharged and the second built-in energy storage device 13 is discharged, the number of times of discharging the first energy storage device 12 is far greater than that of discharging the second energy storage device 13 after a period of time, so that the attenuation speed of the second energy storage device 13 is reduced, and the durability of the power supply device 100 is improved. Or, when the number of times of discharging the first energy storage device 12 reaches the limit, but the number of times of discharging the second energy storage device 13 does not reach the limit yet, at this time, the power supply device 100 can still perform discharging, thereby improving the service life of the power supply device 100. Alternatively, when the number of discharges of the first energy storage device 12 reaches the limit, a new first energy storage device 12 may be simply replaced, and the service life of the power supply device 100 may be prolonged.
It should be noted that, when the discharging circuit 18 of the power supply device 100 has the first discharging state and the second discharging state, both belong to the protection scope of the present application. When the first energy storage device 12 is not mounted to the housing 11, it is on the one hand understood that the first power parameter value of the first energy storage device 12 at this time is below the first preset value such that the discharge circuit 18 enters the second state, when the discharge circuit 18 is arranged to control the discharge of the second energy storage device 13 when the first energy storage device 12 is not mounted to the housing 11. Alternatively, when the first energy storage device 12 is not mounted to the housing 11, the discharge circuit 18 still has a first discharge state and a second discharge state when the first energy storage device 12 is mounted to the housing 11, the first discharge state and the second discharge state being inherent features of the discharge circuit 18. That is, as long as the discharging circuit 18 can be switched to the first discharging state or the second discharging state when the first energy storage device 12 is mounted to the housing 11, it is not related to whether the first energy storage device 12 is actually mounted to the housing 11, but only the discharging circuit 18 has the above-mentioned functions of the first discharging state and the second discharging state.
The controller 19 is disposed on the circuit board assembly 15, and the discharge circuit 18 is also disposed at least partially on the circuit board assembly 15, so as to facilitate management and heat dissipation of the various electronic components. Alternatively, the circuitry on the circuit board assembly 15 for managing the first energy storage device 12 and the second energy storage device 13 may also be referred to as a power management module. This achieves modular arrangement of the circuit board assembly 15 for ease of installation and maintenance.
In the present embodiment, the first energy storage device 12 includes two battery packs 122, and two mounting portions 111 are provided on the housing 11, and the two battery packs 122 are slidably mounted to the two mounting portions 111, respectively. The two mounting portions 111 are provided on two opposite surfaces of the housing 11, respectively. The two mounting portions 111 are symmetrically disposed, and the two battery packs 122 are also symmetrically disposed, so that stability of the power supply device 100 can be ensured. In the present embodiment, the entirety of the two battery packs 122 is understood as the first energy storage device 12. It will be appreciated that one of the two battery packs 122 may also be understood as a first energy storage device 12 and the other as a third energy storage device identical to the first energy storage device 12. In other embodiments, the first energy storage device 12 may also include more than two battery packs 122, and the number of battery packs 122 is not limited.
The first energy storage device 12 comprises at least two battery packs 122, the total energy of the first energy storage device 12 being greater than the total energy of the second energy storage device 13. Of course, it is understood that the total energy of the first energy storage means 12 may also be smaller than the total energy of the second energy storage means 13. In the present embodiment, the total energy of the first energy storage device 12 is greater than or equal to 100Wh and less than or equal to 2000Wh. Alternatively, the total energy of the first energy storage device 12 is greater than or equal to 200Wh and less than or equal to 1500Wh. Alternatively, the total energy of the first energy storage device 12 is 400Wh or more and 1000Wh or less. In this way, the power supply device 100 can meet the requirement of the user on the electricity consumption time, and the problems of overweight and overlarge volume of the power supply device 100 are avoided. The total capacity of the second energy storage device 13 is 100Wh or more and 1000Wh or less. Alternatively, the total capacity of the second energy storage device 13 is 100Wh or more and 500Wh or less. In this way, the portable power supply device can meet the requirement of users for urgent power consumption, and the problems of excessive weight and excessive volume of the power supply device 100 can be avoided.
As shown in fig. 7, in the present embodiment, the first energy storage device 12 is further provided to be detachable from the housing 11 to supply power to the power tool 200. In this way, when the user performs work outdoors, the power supply device 100 can directly supply power to the power tool 200, but this limits the movement range of the power tool 200, and reduces the work efficiency. And if the first energy storage device 12 is detached to supply power to the power tool 200, the power tool 200 can be moved at will, thereby facilitating the operation of the user. Alternatively, when the first energy storage device 12 of the power supply device 100 is not sufficiently charged, the power supply device on the electric tool 200 may be used as the first energy storage device 12, so that the service life of the power supply device 100 may be prolonged. The first energy storage device 12 on the power supply device 100 is configured as a platform power supply device, so that the applicability of the power supply device 100 is improved, and the use cost of a user is reduced. The power tool 200 may be, for example, a blower as shown in fig. 7. The power tool 200 may also be other garden tools, such as a lawnmower, a mower, a chain saw, a pruner, etc. The electric power tool 200 may be a torque output type tool such as an electric drill or an electric hammer, a sawing type tool such as an electric circular saw, a jig saw, a reciprocating saw, or a grinding type tool such as a corner grinder or a sander. Of course, in other embodiments, the power tool 200 may also be configured to provide power to a hand propelled power tool 200, such as a hand propelled mower, a hand propelled snowplow, and the like. In other embodiments, the power tool 200 may also be a smart device, such as a smart mower. In other embodiments, the power tool 200 may also be a riding vehicle, such as a riding lawn mower. Of course, in other embodiments, the power tool 200 may be other power tools, such as a light, a washer, etc.
As shown in fig. 2 and 8, the power output interface 14 includes a dc output interface 141 and an ac output interface 142, the dc output interface 141 is configured to output dc power to dc power consumers, and the ac output interface 142 is configured to output ac power to ac power consumers. Thus, the power supply device 100 can be used as a direct current energy storage device to output direct current, and can replace a commercial power grid to output alternating current, so that the application range of the power supply device 100 is increased.
The discharging circuit 18 is electrically connected to the dc output interface 141 and the first energy storage device 12, and the discharging circuit 18 is also electrically connected to the dc output interface 141 and the second energy storage device 13. When it is required to output dc power to the external dc power consumption device, the first energy storage device 12 outputs power first until the first power parameter value is reduced to the first preset value, and then the second energy storage device 13 outputs power.
The dc output interface 141 may be a USB (Universal Serial Bus) output interface, and the USB output interface may be capable of outputting dc with a relatively low voltage, for example, may output dc with a voltage of 5V and a current of not more than 500 milliamps. The USB output interface can be connected with devices such as a mobile phone and a computer to charge the mobile phone and the computer. Alternatively, the USB output interface may also be connected to other USB devices to supply power to the USB devices, which are typically some devices with less power consumption and less power, such as a sound recorder, a music player, etc. In this embodiment, the USB output interface may be a Type-A interface or a Type-c interface. The dc output interface 141 may include a Type-a interface and a Type-c interface, which may improve the application range of the power supply apparatus 100.
Ac output interface 142 is configured to output ac power to ac powered devices. The discharge circuit 18 is electrically connected to the ac output interface 142 and the first energy storage device 12, and the discharge circuit 18 is also electrically connected to the ac output interface 142 and the second energy storage device 13. The power supply device 100 further includes an inverter 20 and a booster circuit 21. The inverter 20 is provided to convert direct current into alternating current, the booster circuit 21 electrically connects the discharge circuit 18 and the inverter 20, and the inverter 20 is provided between the booster circuit 21 and the alternating current output interface 142. When the alternating current needs to be output to the outside, the first energy storage device 12 or the second energy storage device 13 outputs the direct current, the direct current is input to the boost circuit 21, and after passing through the boost circuit 21, the output voltage of the direct current output by the boost circuit 21 is higher than the input voltage. The inverter 20 converts the direct current output by the boost circuit 21 into alternating current and outputs the alternating current to the alternating current output interface 142, and the alternating current output interface 142 supplies power to the alternating current electric equipment.
In the present embodiment, the nominal voltage of the first energy storage device 12 is 56V, that is, the nominal voltage of the battery pack 122 included in the first energy storage device 12 is 56V. It is of course understood that the nominal voltage of the first energy storage device 12 may be greater than or equal to 20V and less than or equal to 100V, or the nominal voltage of the first energy storage device 12 may be greater than or equal to 36V and less than or equal to 80V, or the nominal voltage of the first energy storage device 12 may be greater than or equal to 40V and less than or equal to 60V. Or the nominal voltage of the first energy storage device 12 may be greater than or equal to 100V and less than or equal to 800V. It is appreciated that the nominal voltage of the first energy storage device 12 may be 20V, 24V, 36V, 40V, 48V, 56V, 60V, 80V, 100V, 400V, 800V. The nominal voltage of the second energy storage device 13 is the same as the nominal voltage of the first energy storage device 12.
Ac output interface 142 may include a socket, ac output interface 142 being capable of outputting 120V ac. In other embodiments, ac output interface 142 may also output 100V ac, or 110V ac, or 127V ac, or 220V ac, or 230V ac, or 240V ac. In general, the voltage of the alternating current output by the alternating current output interface can be basically the same as the voltage of the commercial power grid in the region, so that the power consumption requirement of most alternating current electric equipment can be met.
In this embodiment, the boost module converts the 56V dc power output by the first energy storage device 12 or the second energy storage device 13 into high voltage dc power, and then the inverter 20 converts the high voltage dc power into ac power. When the external ac power consumption device needs to be powered, the controller 19 controls the discharge state of the discharge circuit 18, so that the first energy storage device 12 is firstly discharged to the ac output interface 142 until the first power parameter value of the first energy storage device 12 reaches the first preset value, and then the first energy storage device 12 stops discharging and the second energy storage device 13 starts discharging.
The maximum output power of the power supply device 100 is 500W or more and 6000W or less. This enables the power supply apparatus 100 to supply power to high-power consumers while also ensuring the efficiency of the electrical energy of the power supply apparatus 100. In other embodiments, the maximum output power of the power supply device 100 is 1000W or more and 1500W or less, which may improve the efficiency of the power supply device 100. Alternatively, in other embodiments, the maximum output power of the power supply device 100 is 1500W or more and 3000W or less, and thus the load capacity of the power supply device 100 can be improved.
The power supply device 100 further comprises a charging circuit 22 and an electrical energy input interface 23, the charging circuit 22 is electrically connected to the electrical energy input interface 23 and the first energy storage device 12, and the charging circuit 22 is also electrically connected to the electrical energy input interface 23 and the second energy storage device 13. The charging circuit 22 outputs the electric energy output from the charging device connected to the electric energy input interface 23 to the first energy storage device 12 and the second energy storage device 13, thereby charging the first energy storage device 12 and the second energy storage device 13.
The controller 19 is also electrically connected to the charging circuit 22 to control the state of charge of the charging circuit 22. The controller 19 may control the charging circuit 22 to be in a first charging state and a second charging state. When the second power parameter value of the second energy storage device 13 is lower than the second preset value, the controller 19 controls the charging circuit 22 to be in the first charging state, and the charging circuit 22 charges the second energy storage device 13 and does not charge the first energy storage device 12. When the second power parameter value of the second energy storage device 13 is higher than the second preset value, the controller 19 controls the charging circuit 22 to be in the second charging state, and the charging circuit 22 does not charge the second energy storage device 13 and charges the first energy storage device 12. That is, when the power supply device 100 needs to be charged, the second energy storage device 13 can be charged with priority, and when the second energy storage device 13 is charged to a certain state, the first energy storage device 12 is charged. This ensures that the second energy storage means 13 of the power supply device 100 is relatively charged. When the user needs to use the power supply device 100 urgently, the second energy storage device 13 can be charged to a certain state for a short time, then the power supply device 100 can be used for working, at the same time, the first energy storage device 12 which is detachably connected can be charged through other equipment, and after a period of working, the first energy storage device 12 is installed on the shell 11 for using the power supply device 100, so that the user needs electricity urgently, and the electricity using time of the user is prolonged.
As shown in fig. 8 and 9, the power supply device 100 includes a driving circuit 24, and the driving circuit 24 includes a discharging circuit 18 and a charging circuit 22. In the present embodiment, the functions of the discharging circuit 18 and the charging circuit 22 are each implemented by the driving circuit 24. The drive circuit 24 includes a plurality of drive switches that constitute a bridge circuit. The first energy storage device 12 may be provided with a plurality of battery packs 122, for example, two battery packs 122 of the first energy storage device 12, namely, a first battery pack 122d and a second battery pack 122e. The first battery pack 122d, the second battery pack 122e, and the second energy storage device 13 are connected in parallel. In the present embodiment, the driving circuit 24 includes driving switches Q1, Q2, Q3, Q4, Q5, Q6. The driving switches Q1 to Q6 may be semiconductor devices, for example, metal-oxide semiconductor field effect transistors (MOSFETs) or Insulated Gate Bipolar Transistors (IGBTs). Each drive switch is connected in parallel with a diode. The driving switch Q1 is a discharging switch of the first battery pack 122d, the driving switch Q4 is a charging switch of the first battery pack 122d, the driving switch Q2 is a discharging switch of the second battery pack 122e, the driving switch Q5 is a charging switch of the second battery pack 122e, the driving switch Q3 is a discharging switch of the second energy storage device 13, and the driving switch Q6 is a charging switch of the second energy storage device 13. In the present embodiment, the entire driving circuit 24 may be regarded as the discharge circuit 18 or the charge circuit 22, and the circuit included in the discharge circuit 18 and the circuit included in the charge circuit 22 may overlap each other, and in fact, a circuit block that can achieve the first discharge state and the second discharge state may be regarded as the discharge circuit 18, and similarly, a circuit block that can achieve the first charge state and the second charge state may be regarded as the charge circuit 22.
During the discharging process, the discharging sequence of the first energy storage device 12 and the second energy storage device 13 is controlled by the controller 19 and the driving circuit 24. For example, the controller 19 controls the discharge circuit 18 to be in the first discharge state when the first power parameter value of the first energy storage device 12 is higher than the first preset value. That is, when the first battery pack 122d or the second battery pack 122e is still powered, the discharge circuit 18 is in the first discharge state, for example, when both the first battery pack 122d and the second battery pack 122e are powered. At this time, the controller 19 controls the driving switch Q3 to be turned off, and controls the driving switch Q1, the driving switch Q2, the driving switch Q4, and the driving switch Q5 to be turned on, at this time, the current of the first battery pack 122d sequentially flows through the positive electrode of the first battery pack 122d, the driving switch Q4, and the driving switch Q1 to discharge the first battery pack 122d, the current of the second battery pack 122e sequentially flows through the positive electrode of the second battery pack 122e, the driving switch Q5, and the driving switch Q2 to discharge the second battery pack 122e, and the circuit of the second energy storage device 13 connected in series is in an off state, so that the first battery pack 122d and the second battery pack 122e can be discharged, and the second energy storage device 13 stops discharging. When the first power parameter value of the first energy storage device 12 is lower than the first preset value, the controller 19 controls the discharge circuit 18 to be in the second discharge state. That is, when the electric charges of the first battery pack 122d and the second battery pack 122e are discharged, the discharging circuit 18 is in the second discharging state. At this time, the controller 19 controls the driving switch Q1 and the driving switch Q2 to be turned off, controls the driving switch Q3 and the driving switch Q6 to be turned on, and then the current of the second energy storage device 13 flows through the positive electrode of the second energy storage device 13, the driving switch Q6 and the driving switch Q3 in sequence, so that the second energy storage device 13 discharges, and the first battery pack 122d stops discharging and the second battery pack 122e also stops discharging. It should be noted that, when the second energy storage device 13 starts to discharge, if the driving switch Q1 and the driving switch Q2 are still in the on state, the voltage of the second energy storage device 12 is higher than that of the first energy storage device 12, and the first energy storage device 12 is also substantially unable to discharge, and the first energy storage device 12 is considered to stop discharging and the second energy storage device 13 starts to discharge. In other words, when the second energy storage device 13 starts to discharge, the voltage of the second energy storage device 13 is higher than the voltage of the first energy storage device 12, and the amount of discharge of the first energy storage device 12 is far smaller than that of the second energy storage device 13, and then the first energy storage device 12 is considered to stop discharging.
Likewise, during charging, the sequence of charging the first energy storage device 12 and the second energy storage device 13 is controlled by the controller 19 and the driving circuit 24. Illustratively, the controller 19 controls the charging circuit 22 to be in the first state of charge when the second power parameter value of the second energy storage device 13 is below a second preset value. When the charging circuit 22 is in the first charging state, the charging circuit 22 charges only the second energy storage device 13. At this time, the controller 19 controls the driving switch Q5 and the driving switch Q4 to be turned off, and controls the driving switch Q3 and the driving switch Q6 to be turned on, at this time, current flows through the driving switch Q3, the driving switch Q6 and the positive electrode of the second energy storage device 13 in order to charge the second energy storage device 13, the circuit in which the first battery pack 122d is connected in series is turned off, and the circuit in which the second battery pack 122e is connected in series is also turned off. When the second power parameter value of the second energy storage device 13 is higher than the second preset value, the second energy storage device 13 is fully charged, and the first energy storage device 12 is started to be charged, and the controller 19 controls the charging circuit 22 to be in the second charging state. For example, the controller 19 controls the driving switch Q6 to be turned off, controls the driving switch Q1, the driving switch Q2, the driving switch Q4, and the driving switch Q5 to be turned on, when a current may flow through the driving switch Q1, the driving switch Q4, and the positive electrode of the first battery pack 122d to charge the first battery pack 122d, another current may flow through the driving switch Q2, the driving switch Q5, and the positive electrode of the second battery pack 122e sequentially to charge the second battery pack 122e, and the circuit of the second energy storage device 13 connected in series is in an off state.
In this embodiment, a transition phase is further included in the switching process of the discharging circuit 18 from the first discharging state to the second discharging state, and the transition phase makes the first energy storage device 12 discharge to the first preset value, and makes the second energy storage device 13 start to discharge for a preset period of time before making the first energy storage device 12 stop discharging. It should be noted that the transition period is very short, and the preset duration is also very short, which is a duration of millisecond level. It will be appreciated, therefore, that although the first energy storage device 12 does not cease to discharge during the transition phase, the first energy storage device 12 may also be considered to be stopped from discharging during the transition phase because this time is very brief and the current or amount of discharge of the first energy storage device 12 is now very small, and the state of the discharge circuit 18 during the transition phase may be equivalent to the second state of discharge of the discharge circuit 18. The transition stage is set to enable the discharge of the first energy storage device 12 to be switched to the discharge of the second energy storage device 13 in a seamless manner, so that the situation that the first energy storage device 12 stops discharging and the second energy storage device 13 does not start discharging and stops is avoided, and bad experience is avoided for users.
Illustratively, the operation of the discharge circuit 18 during the transition phase is described below. As shown in fig. 9, when the discharging circuit 18 is in the first discharging state, the first energy storage device 12 is discharged first, and the first battery pack 122d is taken as an example, at this time, the driving switch Q4 and the driving switch Q1 are turned on, and the first battery pack 122d is discharged. When the first energy storage device 12 discharges until the first power parameter value reaches the first preset value, the controller 19 controls the discharge circuit 18 to enter a transition stage, at this time, the controller 19 controls the driving switch Q4 to be turned off, the driving switch Q1 to be turned on, and simultaneously controls the driving switch Q3 and the driving switch Q6 to be turned on, at this time, the second energy storage device 13 starts to discharge, and at this time, the first energy storage device 12 does not stop discharging immediately. Then, when the second energy storage device 13 is already continuously discharging, the controller 19 may control the driving switch Q1 to be turned off. This transition phase is very brief and it is considered that in this transition phase the first energy storage means 12 is also equivalent to stopping the discharge, but the arrangement of this transition phase does allow a seamless interface of the discharge by the first energy storage means 12 with the discharge by the second energy storage means 13.
As shown in fig. 8, the power supply device 100 further includes a current detection module 25, where the current detection module 25 includes a current detection resistor 26 connected in series to the first energy storage device 12 and the second energy storage device 13, respectively, and the current detection module 25 can detect a direction of a current flowing through the current detection resistor 26. In this way, safety risks due to failure of the drive switch can be avoided. Taking the first battery pack 122d and the second battery pack 122e as an example, if the driving switch Q4 is shorted, if the voltage of the second battery pack 122e is higher than that of the first battery pack 122d, a large current flows from the second battery pack 122e to the first battery pack 122d, which poses a great risk to the power supply apparatus 100. When the current detection module 25 detects that the current flowing through the first battery pack 122d is larger, the controller 19 controls the driving switch Q2 to be turned off, so that the larger current does not continue to flow to the first battery pack 122d, and dangerous situations are avoided.
In this embodiment, the first power parameter value is a voltage value of the first energy storage device 12, and the first preset value may be set as a discharge cut-off voltage of the first energy storage device 12. Thus, when the power supply device 100 performs discharging, the first energy storage device 12 performs discharging preferentially until the voltage thereof reaches the discharge cut-off voltage, and then the second energy storage device 13 is caused to start discharging. That is, the first energy storage device 12 is discharged until its electric charge is exhausted, and then the second energy storage device 13 is discharged. In this way, the number of discharges of the second energy storage device 13 can be reduced, the service life of the power supply device 100 can be prolonged, and the rate of decay of the total energy of the second energy storage device 13 can be reduced. Furthermore, the power supply device 100 can be made to meet the demands of burst power consumption and long-time power consumption. The second power parameter value may also be set to the voltage value of the second energy storage device 13, and the second preset value may be set to the full charge voltage of the second energy storage device 13. Thus, when the power supply device 100 is charged, the second energy storage device 13 is charged preferably until the voltage value thereof reaches the full voltage, and then the first energy storage device 12 is charged. That is, when the power supply device 100 performs charging, the second energy storage device 13 may be charged fully and then the first energy storage device 12 may be charged.
For example, in the present embodiment, the first energy storage element 121 is a lithium battery cell, and the second energy storage element 131 is also a lithium battery cell. Illustratively, the first energy storage element 121 is a 18650 cell and the second energy storage element 131 is also a 18650 cell. Of course, in other embodiments, the first energy storage element 121 may be a 21700 cell. In other embodiments, the second energy storage element 131 may also be a 21700 cell. The discharge cut-off voltage of the first energy storage device 12, that is, the discharge cut-off voltage of the first energy storage element 121 may be set to a conventional discharge cut-off voltage of 18650 cells, for example, may be 2.75V or 2.5V. While the charge voltage of the second energy storage device 13 may be set to the charge voltage of the second energy storage element 131, for example, the charge voltage of the second energy storage element 131 may be set to 18650, for example, 4.2V. It will be appreciated that the first preset value is considered to be the discharge cutoff voltage of the first energy storage device 12 as long as it is set substantially equal to the discharge cutoff voltage. The second preset value is considered to be the full charge voltage of the second energy storage device 13 as long as it is set substantially equal to the full charge voltage.
It will be appreciated that in other embodiments, the first power parameter value may be other parameters reflecting how much power is stored by the first energy storage device 12, or the first power parameter value may be set to other parameters reflecting the depletion of the discharge of the first energy storage device 12. For example, the first power parameter value may be a remaining amount of the first energy storage device 12. The second power parameter value may be another parameter reflecting how much electric energy is stored in the second energy storage device 13, or the second power parameter value may be set to another parameter reflecting that the second energy storage device 13 is fully charged. For example, the second power parameter value may be a remaining amount of the second energy storage device 13.
In this embodiment, the first energy storage element 121 and the second energy storage element 131 may use the same battery cell, for example, all are lithium battery cells. In other embodiments, the energy density of the first energy storage element 121 may also be different from the energy density of the second energy storage element 131. For example, the first energy storage element 121 is a lithium battery cell, and the second energy storage element 131 is a lithium iron phosphate battery cell, a nickel-chromium battery cell, a lead storage battery, a soft pack battery, or the like.
In other embodiments, the first energy storage element 121 will comprise a first positive electrode made of a first material and the second energy storage element 131 comprises a second positive electrode made of a second material, for example, the first energy storage element 121 is a lithium cell and the second energy storage element 131 is a lithium iron phosphate cell, where the first energy storage element 121 and the second energy storage element 131 have positive electrodes made of different materials.
In other embodiments, the second energy storage element 131 may also be a super capacitor, also referred to as an electrochemical capacitor. Illustratively, an asymmetric supercapacitor. The electrochemical capacitor based on the bipolar plate capacitance principle is generally designed symmetrically, the anode and the cathode are made of two identical materials and are matched in quality, such as an active carbon electrode, and the symmetrical capacitor is generally free of positive and negative electrodes, and has excellent power density and cycle life, but has energy density far lower than that of a lithium ion battery, a nickel-hydrogen battery and the like. The two electrodes of the asymmetric capacitor are made of different materials, such as a carbon material/transition metal oxide system electrode material, a carbon material/conductive polymer system electrode material or two active carbon electrodes with different electrochemical properties, so that the energy density of the electrochemical capacitor is improved to 80-120Wh/kg, and the electrochemical capacitor can be used as an energy supply unit of the electric tool 200. Optionally, the second energy storage element 131 may be a lithium carbon capacitor (Lithium Carbon Capacitor, LCC).
The maximum discharge power of the first energy storage device 12 is greater than or equal to 1000W and less than or equal to 10000W, or the maximum discharge power of the first energy storage device 12 is greater than or equal to 2000W and less than or equal to 8000W. This may increase the efficiency of the discharge of the first energy storage device 12.
As shown in fig. 8, the power supply device 100 further includes a communication module 27, a display module 28, and an input module 29. The communication module 27 can interact with the remote device, for example, the communication module 27 can receive information sent by the remote device, and can also send information to the remote device. The remote device may be a user terminal device such as a mobile phone or a computer, and the user may manage the power supply apparatus 100 through the remote device or may know the state of the power supply apparatus 100 at any time. The communication module 27 may be, for example, a WIFI module, a bluetooth module, or the like.
The display module 28 may be a display screen provided on the housing 11, which can display a status parameter or a performance parameter of the power supply device 100. The input module 29 may be operated by a user to input some information, and the input module 29 may be connected to some keys that can be operated by the user. The input module 29 may also include touch keys provided on the display screen.
As shown in fig. 9, the discharging sequence of the power management module is specifically described below.
Step S1, detecting whether the first energy storage device is mounted to the mounting portion. If the first energy storage device 12 is not mounted to the mounting portion 111, step S2 is performed. If the first energy storage device 12 is mounted to the mounting portion 111, step S3 is performed.
Step S2, only the second energy storage device is controlled to discharge. At this time, the controller 19 controls only the second energy storage device 13 to discharge, and the first energy storage device 12 does not discharge.
In step S3, it is determined whether the first power parameter value of the first energy storage device 12 is higher than a first preset value. The discharge state of the discharge circuit 18 is controlled according to whether the detected first power parameter value is higher than a first preset value. If the first power parameter value is higher than the first preset value, the controller 19 controls the discharging circuit 18 to enter the first discharging state, i.e., step S4. If the first power parameter value is lower than the first preset value, the controller 19 controls the discharging circuit 18 to enter the second discharging state, i.e., step S2.
Step S4, controlling only the first energy storage device to discharge. The controller 19 then controls the first energy storage device 12 to discharge and the second energy storage device 13 to not discharge.
And repeating the step S3.
In other embodiments, the first preset value may also be set higher than the discharge cutoff voltage, so that the first energy storage device 12 may be discharged with a relatively large amount of electricity, which may ensure that the first energy storage device 12 is capable of storing a relatively small amount of electricity to reduce the decay rate of the first energy storage device 12. If the first preset value is set to be higher than the discharge cutoff voltage, then during the discharging process of the first energy storage device 12, whether the first power parameter value of the first energy storage device 12 reaches the discharge cutoff voltage can be detected again to determine whether the first energy storage device 12 is completely discharged. That is, the voltage value when determining whether the first energy storage device 12 can be discharged may be set higher than the voltage value when determining whether the first energy storage device 12 is discharged completely.
As shown in fig. 1, the power supply device 100 further includes a first adapter 30 and a second adapter 31 provided separately from the housing 11. The first adapter 30 comprises a first adapter output interface 30a mateable with the power input interface 23 and the second adapter 31 comprises a second adapter output interface 31a mateable with the power input interface 23. The first adapter 30 comprises a first adapter input interface 30b, which first adapter input interface 30b is arranged to be connectable with the utility grid for electrically connecting the utility grid to the power input interface 23, which first adapter input interface 30b may be a plug connected to a socket in the utility grid. The first adapter 30 further comprises a rectifying circuit connected between the first adapter input interface 30b and the first adapter output interface 30a, the rectifying circuit being capable of converting alternating current output by the utility grid into direct current.
The second adapter 31 comprises a second adapter input interface 31b connectable to the solar device 300. The second adapter 31 can output the solar-converted electric energy to the power supply device 100 to charge the first energy storage device 12 and the second energy storage device 13.
The power supply system 400 shown in fig. 11 and 12 includes the power supply device 100 and the charger 41 as in fig. 1. The first energy storage device 12 in the power supply device 100 is detachable from the housing 11, and the first energy storage device 12 is also detachably mounted to the charger 41. When the first energy storage device 12 is coupled to the charger 41, the charger 41 can charge the first energy storage device 12.
Illustratively, the charger 41 includes a charger main body 411, and a second mounting portion 412 that mates with the battery pack interface 122b is provided on the charger main body 411, and the shape and structure of the second mounting portion 412 are substantially the same as those of the mounting portion 111 provided on the power supply device 100. Thus, the battery pack 122 may be slidably coupled to the mounting portion 111 on the housing 11 or to the second mounting portion 412 on the charger 41. That is, the battery pack 122 can be charged through the power input interface 23 of the power supply device 100, and the battery pack 122 can be charged through the charger 41, so that the application range of the battery pack 122 is improved. When the power supply device 100 is used by a user to perform work and is inconvenient to charge, the user can charge the battery pack 122 through the charger 41, so that the user can conveniently charge the battery pack 122 while working, thereby improving the work efficiency of the user.
In one embodiment, the boost circuit 21 in the power supply apparatus 100 may require a higher boost gain, but the semiconductor element or the electrolytic capacitor in the general boost circuit cannot support the higher boost gain.
Referring to the booster circuit 21 shown in fig. 13, the direct current output from the first energy storage device 12 or the second energy storage device 13 can be passed through the isolated voltage conversion circuit 211 to obtain a target voltage value without adding a semiconductor element or an electrolytic capacitor having higher withstand voltage. In one embodiment, the isolated voltage conversion circuit 211 may be composed of a first electrically isolated boost circuit 211a and a first electrically isolated boost circuit 211b, both circuits including two sets of transformers, the primary sides of the two circuits being connected in parallel and the secondary sides being connected in series. For example, the dc voltage output by the first energy storage device 12 or the second energy storage device 13 is 30V-60V, and the dc voltage of 300V-600V can be obtained after passing through the isolated voltage conversion circuit 211, where the isolated voltage conversion circuit 211 may be formed of two electrically isolated boost circuits with 5 times of boost gain, so that an effect of 10 times of boost gain can be achieved.
In one embodiment, as shown in FIG. 14, the DC output interface 141 may include a Type-A interface, a bidirectional Type-c interface, and a unidirectional Type-c interface. The discharging circuit 18 may include a voltage conversion module 181, a first buck module 182 connected to a Type-a interface, a second buck-boost module 183 connected to a bidirectional Type-c interface, and a third buck-boost module 184 connected to a unidirectional Type-c interface. In this embodiment, the controller 19 may detect the effective USB interface of the dc output interface 141 connected to the electric device, and then control the voltage conversion module 181 and the first step-down module 182, the second step-up/step-down module 183, or the third step-up/step-down module 184 connected to the effective USB interface according to the working voltage required by the connected device to perform step-down conversion, so as to supply power to the electric device connected to the effective USB interface. In this embodiment, a voltage of 15V-30V can be obtained after the voltage is reduced by the voltage conversion module 181. The controller 19 may control the first buck module 182, the second buck-boost module 183, or the third buck-boost module 184 to perform voltage conversion again according to the difference of each USB interface connected to the electric device.
Claims (58)
- A power supply device, comprising:a housing;a first energy storage device comprising at least one first energy storage element, the first energy storage device being detachably mounted to the housing;a second energy storage device comprising at least one second energy storage element disposed within the housing;the electric energy output interface is arranged to output electric power to external electric equipment;the discharging circuit is electrically connected with the electric energy output interface and is also electrically connected with the second energy storage device and the first energy storage device;a controller controlling a discharge state of the discharge circuit;the controller controls the discharge circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when a first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value.
- The power supply device of claim 1, wherein the second energy storage device is fixedly disposed within the housing.
- The power supply device of claim 1, wherein the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
- The power supply device of claim 1, wherein the electrical energy output interface comprises a dc output interface, the discharge circuit electrically connects the dc output interface and the second energy storage device, and the discharge circuit electrically connects the dc output interface and the first energy storage device.
- The power supply device of claim 1, wherein the power output interface comprises an ac output interface, the power supply device further comprising an inverter for converting dc power to ac power, the inverter electrically connecting the ac output interface and the discharge circuit.
- The power supply device according to claim 5, further comprising a booster circuit that electrically connects the discharge circuit and the inverter.
- The power supply device according to claim 1, wherein a maximum output power of the power supply device is 500W or more and 6000W or less.
- The power supply device according to claim 1, further comprising: the charging circuit is electrically connected with the electric energy input interface and the second energy storage device, the charging circuit is electrically connected with the electric energy input interface and the first energy storage device, the charging circuit is electrically connected with the controller, and the controller controls the charging state of the charging circuit.
- The power supply device of claim 8, wherein the charging circuit is configured to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
- The power supply device of claim 9, wherein the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than the second preset value.
- The power supply device according to claim 1, wherein the first power parameter value is a voltage value.
- The power supply device of claim 1, wherein the first power parameter value is a residual power value.
- The power supply device of claim 1, wherein the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
- The power supply device of claim 1, wherein the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
- The power supply device of claim 1, wherein the first energy storage element comprises a first positive electrode made of a first material and the second energy storage element comprises a second positive electrode made of a second material.
- The power supply device according to claim 1, wherein an energy density of the first energy storage element is different from an energy density of the second energy storage element.
- The power supply device according to claim 1, wherein the housing is formed with a mounting portion to which the first energy stocking device is slidably mounted.
- The power supply device of claim 17, wherein the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
- The power supply device according to claim 17, wherein the housing provides two of the mounting portions, the two mounting portions being provided on two opposite surfaces of the housing, respectively.
- The power supply device according to claim 1, wherein the maximum discharge power of the first energy storage device is 1000W or more and 10000W or less.
- The power supply device according to claim 1, further comprising: and the communication module can receive information sent by the remote equipment or can send the information to the remote equipment.
- The power supply device of claim 1, further comprising a power input interface and an adapter disposed separately from the housing, the adapter comprising an adapter output interface that mates with the power input interface.
- The power supply apparatus of claim 22, wherein the adapter comprises an adapter input interface connectable to a utility grid and a rectifying circuit connected between the adapter input interface and the adapter output interface.
- The power device of claim 22, wherein the adapter comprises an adapter input interface connectable to a solar device.
- The power supply device of claim 1, wherein the first power parameter value is a voltage value of the first energy storage device, and the first preset value is set to a discharge cutoff voltage of the first energy storage device.
- A power supply device, comprising:a housing;a first energy storage device comprising at least one first energy storage element, said first energy storage device being removably mounted to said housing, said first energy storage device further being configured to be removable from said housing to power a power tool;a second energy storage device comprising at least one second energy storage element disposed within the housing;the electric energy output interface is arranged to output electric power to external electric equipment;the discharging circuit is electrically connected with the electric energy output interface and is also electrically connected with the second energy storage device and the first energy storage device;A controller controlling a discharge state of the discharge circuit;the controller controls the discharge circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when a first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value.
- The power device of claim 26, wherein the second energy storage device is fixedly disposed within the housing.
- The power device of claim 26, wherein the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
- The power supply device according to claim 26, wherein a maximum output power of the power supply device is 500W or more and 6000W or less.
- The power supply device of claim 26, further comprising a charging circuit configured to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
- The power supply device of claim 30, wherein the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than the second preset value.
- The power supply device of claim 26, wherein the first power parameter value is a voltage value.
- The power supply device of claim 26, wherein the first power parameter value is a residual power value.
- The power device of claim 26, wherein the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
- The power device of claim 26, wherein the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
- The power supply device of claim 26, wherein the housing is formed with a mounting portion to which the first energy storage device is slidably mounted.
- The power device of claim 36, wherein the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
- The power supply device according to claim 36, wherein the housing provides two of the mounting portions symmetrically disposed on opposite sides of the housing.
- The power supply device of claim 26, wherein the maximum discharge power of the first energy storage device is 1000W or more and 10000W or less.
- The power device of claim 26, wherein the first power parameter value is a voltage value of the first energy storage device, the first preset value being set to a discharge cutoff voltage of the first energy storage device.
- A power supply system including a power supply device and a charger, the power supply device comprising:a housing;a first energy storage device comprising at least one first energy storage element, the first energy storage device being detachably mounted to the housing;a second energy storage device comprising at least one second energy storage element, the second energy storage element being at least partially disposed within the housing;the electric energy output interface is arranged to output electric power to external electric equipment;the discharging circuit is electrically connected with the electric energy output interface and is also electrically connected with the second energy storage device and the first energy storage device;A controller controlling a discharge state of the discharge circuit;the controller controls the discharge circuit to control the first energy storage device to discharge and the second energy storage device to not discharge when a first power parameter value of the first energy storage device is higher than a first preset value, and to control the first energy storage device to not discharge and the second energy storage device to discharge when the first power parameter value of the first energy storage device is lower than the first preset value;the first energy storage device is further configured to be removably mounted to the charger, the charger configured to charge the first energy storage device when coupled thereto.
- The power system of claim 41, wherein the first energy storage device is further configured to be removable from the housing to power a power tool.
- The power system of claim 41, wherein the housing is formed with a first mounting portion, the first energy storage device is configured to be slidably coupled to the first mounting portion, the charger is formed with a second mounting portion, and the first energy storage device is configured to be slidably coupled to the second mounting portion.
- The power system of claim 41, wherein the second energy storage device is fixedly disposed within the housing.
- The power system of claim 41, wherein the discharge circuit is configured to control discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
- The power supply system according to claim 41, wherein a maximum output power of the power supply device is 500W or more and 6000W or less.
- The power system of claim 41, wherein the power device further comprises a charging circuit configured to charge the second energy storage device and not to charge the first energy storage device when the second power parameter value of the second energy storage device is below a second preset value.
- The power system of claim 41, wherein the charging circuit is configured to not charge the second energy storage device and to charge the first energy storage device when the second power parameter value of the second energy storage device is higher than the second preset value.
- The power system of claim 41, wherein the first power parameter value is a voltage value.
- The power system of claim 41, wherein the first power parameter value is a residual power value.
- The power system of claim 41, wherein the nominal voltage of the first energy storage device is the same as the nominal voltage of the second energy storage device.
- The power system of claim 41, wherein the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
- The power system of claim 41, wherein the housing is formed with a mounting portion to which the first energy storage device is slidably mounted.
- The power system of claim 53, wherein the first energy storage device is disposed outside the housing when the first energy storage device is coupled to the mounting portion.
- The power system of claim 53, wherein the housing provides two of the mounting portions symmetrically disposed on opposite sides of the housing.
- The power system of claim 41, wherein the maximum discharge power of the first energy storage device is greater than or equal to 1000W and less than or equal to 10000W.
- The power system of claim 41, wherein the first power parameter value is a voltage value of the first energy storage device, and the first preset value is set to a discharge cutoff voltage of the first energy storage device.
- A control method of a power supply apparatus, the power supply apparatus comprising: a housing, a first energy storage device comprising at least one first energy storage element detachably mounted to the housing, a second energy storage device comprising at least one second energy storage element disposed within the housing, a discharge circuit, and a controller; the control method comprises the following steps:judging whether a first power parameter value of the first energy storage device is higher than a first preset value or not;controlling a discharge state of the discharge circuit according to whether the first power parameter value is higher than the first preset value;and when the first power parameter value of the first energy storage device is lower than the first preset value, controlling the first energy storage device to be not discharged and the second energy storage device to be discharged.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903836 | 2021-08-06 | ||
| CN2021109038362 | 2021-08-06 | ||
| PCT/CN2022/108626 WO2023011313A1 (en) | 2021-08-06 | 2022-07-28 | Power supply device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117203875A true CN117203875A (en) | 2023-12-08 |
Family
ID=85154260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280011174.0A Pending CN117203875A (en) | 2021-08-06 | 2022-07-28 | Power supply device and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117203875A (en) |
| WO (1) | WO2023011313A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10044197B2 (en) * | 2013-12-12 | 2018-08-07 | Milwaukee Electric Tool Corporation | Portable power supply and battery charger |
| CN106125897A (en) * | 2016-06-30 | 2016-11-16 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN107579588A (en) * | 2017-10-26 | 2018-01-12 | 青岛海信移动通信技术股份有限公司 | A kind of supply unit and mobile terminal for mobile terminal |
| CN210380316U (en) * | 2019-09-12 | 2020-04-21 | 浙江齐享科技有限公司 | Energy storage power station |
| CN210350863U (en) * | 2019-09-12 | 2020-04-17 | 浙江齐享科技有限公司 | Portable energy storage power station |
| CN112713582A (en) * | 2020-12-30 | 2021-04-27 | 株洲菲斯罗克光电技术有限公司 | Dual-power supply control system and method |
-
2022
- 2022-07-28 CN CN202280011174.0A patent/CN117203875A/en active Pending
- 2022-07-28 WO PCT/CN2022/108626 patent/WO2023011313A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2023011313A1 (en) | 2023-02-09 |
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