WO2023011313A1 - Power supply device and control method thereof - Google Patents

Abstract

The present application discloses a power supply device and a control method thereof. The power supply device comprises: a housing; a first energy storage device, which comprises at least one first energy storage element detachably mounted to the housing; a second energy storage device, which comprises at least one second energy storage element disposed in the housing; a power output interface, which is configured to output power to an external electrical device; a discharging circuit, which is electrically connected to the power output interface, and is further electrically connected to the second energy storage device and the first energy storage device; and a controller, which controls a discharge state of the discharging circuit. The controller controls the discharging circuit such that the first energy storage device discharges and the second energy storage device does not discharge when a first power parameter value of the first energy storage device is higher than a first preset value, and the first energy storage device does not discharge and the second energy storage device discharges when the first power parameter value of the first energy storage device is lower than the first preset value.

Description

Power supply device and control method thereof

This application claims priority to a Chinese patent application with application number 202110903836.2 filed with the China Patent Office on August 6, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to a power supply device, for example, to a power supply device and a control method thereof.

Background technique

With the development of battery technology, portable power supply components have entered people's lives. Generally, there are two types of power supply units, one is a power supply unit including a built-in battery, and the other is a power supply unit including an external battery. For a power supply device that only includes a built-in battery, its battery life is limited, and its load capacity is also limited, which cannot meet the user's needs for using high-power devices or using electricity for a long time. Especially when the user needs to live or play outdoors, the electric energy stored in the power supply device including the built-in battery is far from meeting the needs of the user. Moreover, after the built-in battery is discharged many times, it will have a great impact on the life of the power supply unit. And for the power supply unit that only includes the external battery, the weight of the external battery is relatively heavy, and sometimes the external battery power is insufficient. The power supply device cannot output electric energy in time.

Contents of the invention

The present application provides a power supply device and a control method thereof that can meet both the user's demand for urgent power consumption and the user's demand for long-term power consumption.

This application adopts following technical scheme:

A power supply device, comprising: a casing; a first energy storage device, including at least one first energy storage element, the first energy storage device is detachably mounted to the casing; a second energy storage device, including at least one second energy storage device The energy element, the second energy storage element is set in the housing; the electric energy output interface is set to output power to the external electric equipment; the discharge circuit is electrically connected with the electric energy output interface, and the discharge circuit is also connected with the second energy storage device and the first energy storage device. The energy device is electrically connected; the controller controls the discharge state of the discharge circuit; the controller controls the discharge circuit to control the discharge of the first energy storage device when the first power parameter value of the first energy storage device is higher than the first preset value and the second The second energy storage device is not discharged, and 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 controlled not to discharge and the second energy storage device is discharged.

In some embodiments, the second energy storage device is fixedly disposed in the casing.

In some embodiments, the discharge circuit is configured to control the discharge of the second energy storage device when the first energy storage device is not mounted to the housing.

In some embodiments, the power output interface includes a DC output interface, 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 includes an AC output interface, the power supply device further includes an inverter for converting direct current into alternating current, and the inverter is electrically connected to the AC output interface and the discharge circuit.

In some embodiments, the power supply device further includes a boost circuit, and the boost circuit is electrically connected to the discharge circuit and the inverter.

In some embodiments, the maximum output power of the power supply device is greater than or equal to 500W and less than or equal to 6000W.

In some embodiments, the power supply device further includes: a power input interface and a charging circuit, the charging circuit is electrically connected to the power input interface and the second energy storage device, the charging circuit is electrically connected to the power input interface and the first energy storage device, the charging circuit and the control The device is electrically connected, 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 charge the first energy storage device when the second power parameter value of the second energy storage device is lower than a second preset value.

In some embodiments, the charging circuit is configured not to charge the second energy storage device but 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 includes a first positive electrode made of a first material, and the second energy storage element includes 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 casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.

In some embodiments, when the first energy storage device is coupled to the mounting portion, the first energy storage device is disposed outside the housing.

In some embodiments, the casing provides two mounting portions, and the two mounting portions are respectively disposed on two opposite surfaces of the casing.

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 includes: a communication module, which can receive information sent by a remote device or can send information to a remote device.

In some embodiments, the power supply device further includes a power input interface and an adapter provided separately from the casing, and the adapter includes an adapter output interface matching the power input interface.

In some embodiments, the adapter includes an adapter input interface connectable to a mains grid and a rectification circuit connected between the adapter input interface and the adapter output interface.

In some embodiments, the adapter includes an adapter input interface connectable to a 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 as a discharge cut-off voltage of the first energy storage device.

A power supply device, comprising: a casing; a first energy storage device, including at least one first energy storage element, the first energy storage device is detachably mounted to the casing, and the first energy storage device is also configured to be able to be removed from the casing The body is disassembled to supply power to an electric tool; the second energy storage device includes at least one second energy storage element, and the second energy storage element is arranged in the casing; the electric energy output interface is arranged to output electric power to external electrical equipment; discharge The circuit is electrically connected to the electric energy output interface, and the discharge circuit is also electrically connected to the second energy storage device and the first energy storage device; the controller controls the discharge state of the discharge circuit; the controller controls the discharge circuit to When the first power parameter value is higher than the first preset value, the first energy storage device is controlled to discharge and the second energy storage device is not discharged, and when the first power parameter value of the first energy storage device is lower than the first preset value Control the first energy storage device not to discharge and the second energy storage device to discharge.

In some embodiments, the second energy storage device is fixedly disposed in the casing.

In some embodiments, the discharge circuit is configured to control the 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 greater than or equal to 500W and less than or equal to 6000W.

In some embodiments, the power supply device further includes a charging circuit, and the charging circuit is configured to charge the second energy storage device and not charge the first energy storage device when the second power parameter value of the second energy storage device is lower than a second preset value. The energy storage device is charged.

In some embodiments, the charging circuit is configured not to charge the second energy storage device but 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 casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.

In some embodiments, when the first energy storage device is coupled to the mounting portion, the first energy storage device is disposed outside the housing.

In some embodiments, the casing provides two mounting portions, and the two mounting portions are symmetrically arranged on opposite sides of the casing.

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 as a discharge cut-off voltage of the first energy storage device.

A power supply system, including a power supply device and a charger, the power supply device includes: a housing; a first energy storage device, including at least one first energy storage element, the first energy storage device is detachably mounted to the housing; a second energy storage device The energy device includes at least one second energy storage element, the second energy storage element is at least partly arranged in the casing; the electric energy output interface is configured to output electric power to external electrical equipment; the discharge circuit is electrically connected to the electric energy output interface, and the discharge circuit It is also electrically connected with the second energy storage device and the first energy storage device; the controller controls the discharge state of the discharge circuit; the controller controls the discharge circuit so that the first power parameter value of the first energy storage device is higher than the first preset When the value of the first energy storage device is controlled to discharge and the second energy storage device is not discharged, and 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 controlled not to discharge and the second The energy storage device is discharged; the first energy storage device is also configured to be detachably mounted to a charger configured to charge the first energy storage device when coupled to the first energy storage device.

In some embodiments, the first energy storage device is further configured to be detachable from the housing to power an electric tool.

In some embodiments, the housing is formed with a first mounting portion, the first energy storage device is configured to be slidably connected to the first mounting portion, the charger is formed with a second mounting portion, and the first energy storage device is configured to be capable of being slidably connected to the first mounting portion. Slidingly connected to the second mounting portion.

In some embodiments, the second energy storage device is fixedly disposed in the casing.

In some embodiments, the discharge circuit is configured to control the 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 greater than or equal to 500W and less than or equal to 6000W.

In some embodiments, the power supply device further includes a charging circuit, and the charging circuit is configured to charge the second energy storage device and not charge the first energy storage device when the second power parameter value of the second energy storage device is lower than a second preset value. The energy storage device is charged.

In some embodiments, the charging circuit is configured not to charge the second energy storage device but 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 casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.

In some embodiments, when the first energy storage device is coupled to the mounting portion, the first energy storage device is disposed outside the housing.

In some embodiments, the casing provides two mounting portions, and the two mounting portions are symmetrically arranged on opposite sides of the casing.

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 as a discharge cut-off voltage of the first energy storage device.

A method for controlling a power supply device. The power supply device includes: a housing, a first energy storage device, a second energy storage device, a discharge circuit, and a controller. The first energy storage device includes at least one first energy storage element, and the first energy storage device The energy device is detachably mounted to the casing, the second energy storage device includes at least one second energy storage element, and the second energy storage element is arranged in the casing; the control method includes the steps of: judging the first power parameter of the first energy storage device Whether the value is higher than the first preset value; control the discharge state of the discharge circuit according to whether the first power parameter value is higher than the first preset value; wherein, the first power parameter value of the first energy storage device is higher than the first preset value When the value is set, the first energy storage device is controlled to discharge and the second energy storage device is not discharged; 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 controlled not to discharge and the second energy storage device is not discharged. The energy storage device is discharged.

The power supply device of the present application has strong battery life, and can ensure that the power supply device has power with a high probability, and has a long service life.

Description of drawings

Fig. 1 is a perspective view of a power supply device of an embodiment;

Fig. 2 is a perspective view of the main part of the power supply device and the first energy storage device in Fig. 1;

Fig. 3 is a perspective view of the main part of the power supply device in Fig. 1;

Fig. 4 is an internal view of the first energy storage device in Fig. 2;

Fig. 5 is an internal view of the main part of the power supply device in Fig. 1;

Fig. 6 is a perspective view of the main body shown in Fig. 5 when the second housing is removed;

Fig. 7 is a structural diagram of the main part of the power supply device and the electric tool in Fig. 1;

Fig. 8 is a circuit block diagram of the power supply device in Fig. 1;

Fig. 9 is a circuit diagram of the power management module in Fig. 8;

Fig. 10 is a control logic diagram of the power management module in Fig. 8;

Figure 11 is a perspective view of a power supply system of an embodiment;

Fig. 12 is a plan view of the power supply system in Fig. 11 when a battery pack is combined with 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 .

Detailed ways

The power supply device 100 shown in FIG. 1 is used as a power station, which is convenient for users to carry. The power supply device 100 can be used indoors or moved outdoors. In this embodiment, the power supply device 100 is convenient for users to carry, for example, it is a portable power supply device that is convenient for users to carry. For example, when there is no power supply in an indoor power failure, it can provide power to lighting devices or other necessary household appliances. Or, when the user needs to go camping or hiking outdoors, there is usually no power supply in the surrounding environment. At this time, the power supply device 100 can be used to provide lighting requirements, or to supply power to other electrical equipment, so as to meet the needs of the user in the environment. outdoor living needs. These electrical equipment can be, for example, lamps, mosquito control equipment, fans, mobile phones, computers, living equipment, etc. Alternatively, when the user needs to work outdoors, he needs to use the electric tool 200 as shown in FIG.

In fact, as long as the power supply device 100 adopts the essence of the technical solutions described below in this application, it falls within the protection scope of this application.

As shown in FIGS. 1 to 5 , the power supply device 100 includes: a casing 11 , a first energy storage device 12 , a second energy storage device 13 and an electric energy output interface 14 .

The casing 11 forms the main body of the power supply device 100 , and the casing 11 may be substantially in the shape of a cube, but of course it is not limited thereto. In order to facilitate the user's operation, a handle may also be provided on the casing 11 to facilitate the user to lift the power supply device 100 . Alternatively, in other embodiments, wheels may be provided under the housing 11 to support the housing 11 , and the handle may be configured as a telescopic handle, so that the user can easily walk with the power supply unit 100 in a labor-saving manner. Some frames for protecting the power supply device 100 may also be provided on the casing 11, and the frames may be set as metal frames.

The first energy storage device 12 is arranged to store energy, and the second energy storage device 13 is also arranged to store energy. The first energy storage device 12 includes at least one first energy storage element 121 . The second energy storage device 13 includes at least one second energy storage element 131 . The first energy storage device 12 is connected to the housing 11 in a first installation manner, and the first installation manner enables the first energy storage device 12 to be detachably mounted to the housing 11 . The first energy storage device 12 can be disassembled from the casing 11 by the user, so that the user can also carry the power supply device 100 without the first energy storage device 12 installed. When the user needs to use less power, the user can carry the power supply device 100 with less effort, and it is also convenient for the user to carry the power supply device 100 . For example, in this embodiment, the first energy storage device 12 includes a battery pack 122 , and the battery pack 122 is detachably mounted to the casing 11 . The second energy storage device 13 is connected to the casing 11 in a second installation manner different from the first installation manner. The second installation method is different from the first installation method. The first installation method enables the first energy storage device 12 to be detachably installed to the housing 11 , for example, the battery pack 122 is pluggably installed to the housing 11 . The battery pack 122 includes a battery pack case 122a and a first energy storage element 121 disposed in the battery pack case 122a, and the first energy storage element 121 may be, for example, a cylindrical cell element. The battery pack housing 122 a is provided with a battery pack interface 122 b for pluggably installing the battery pack 122 to the housing 11 , and the housing 11 is formed with a mounting portion 111 corresponding to the battery pack 122 . The cooperation between the battery pack interface 122 b and the mounting portion 111 enables the battery pack 122 to form not only a mechanical connection with the housing 11 but also an electrical connection between the battery pack 122 and the housing 11 . A slide rail 122c is also provided at the battery pack interface 122b, and the slide rail 122c guides the battery pack 122 to be slidably installed to the casing 11 .

The second energy storage device 13 is connected to the casing 11 in a second installation manner. The second installation method is different from the first installation method. The first energy storage device 12 is detachably mounted to the casing 11, and the second energy storage device 13 is then It may be connected to the housing 11 in a fixed installation other than a detachable installation. Of course, it should be noted that the second installation method does not limit that the second energy storage device 13 cannot be detachably installed on the housing 11. For example, both the first energy storage device 12 and the second energy storage device 13 can be The first energy storage device 12 is installed to the housing 11 in a plug-in manner, while the second energy storage device 13 is installed in a detachable connection mode different from the plug-in mode. The housing 11, for example, the second energy storage device 13 is detachably installed inside the housing 11 in a snap-fit manner. At this time, it can also be considered that the plugging method of the first energy storage device 12 is the same as that of the second energy storage device 13. The way of snap connection is different, that is to say, at this time, the first installation method of the first energy storage device 12 and the second installation method of the second energy storage device 13 are also different.

In this embodiment, the second installation manner is such that the second energy storage device 13 is fixedly installed on the housing 11 , and the second energy storage element 131 of the second energy storage device 13 is located in the housing 11 . When the first energy storage device 12 is combined with the installation part 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 time, it can be understood that the first energy storage device 12 can be considered as an external power supply, and the second energy storage device 13 is a built-in power supply.

The second energy storage device 13 is configured to be fixedly installed to the housing 11 , and here, the ways of fixed connection include but not limited to welding, screwing, clipping or non-movable connection. When the second energy storage device 13 is fixedly installed on the housing 11, the second energy storage device 13 may not be disassembled, or the user may disassemble it from the housing 11 with the help of an external tool, so that the second energy storage device 13 may be conveniently installed. Energy device 13 is maintained. 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 cell. Of course, it can be understood that the shape of the second energy storage element 131 may also be a rectangle or other shapes.

The power output interface 14 is configured to output power to external electrical equipment. The power 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 power output interface 14 . The power output interface 14 is arranged on the casing 11 . External electrical equipment can be pluggably connected to the power output interface 14 to supply power through the power supply device 100 .

The power supply device 100 also includes a circuit board assembly 15 disposed in the casing 11 . As shown in FIGS. 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 arranged 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: a heat dissipation element 16 connected to or in contact with the circuit board assembly 15 to dissipate heat from the circuit board assembly 15 . The power supply device 100 may further include a fan, which can generate a heat dissipation airflow flowing through the circuit board assembly 15 and the heat dissipation element 16 when rotating.

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 discharge circuit 18 is configured to output the power stored in the first energy storage device 12 and the second energy storage device 13 to the power output interface 14 , and then output the power to external electrical equipment through the power output interface 14 . The controller 19 is electrically connected to the discharge circuit 18 to control the 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 discharge circuit 18 to be in the first discharge state so that the first energy storage device 12 is discharged and the second energy storage device 13 No discharge. 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 so that the first energy storage device 12 is not discharged and the second energy storage device 13 discharge. The discharge 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 can be ensured that the second energy storage device 13 fixedly installed on the casing 11 is charged with a high probability. When the power supply device 100 needs to be used suddenly, even if the first energy storage device 12 is out of power at this time, the user can carry the power supply device 100 to supply power to external electrical equipment, and at the same time make the first energy storage device 12 pass through other The device is charged, so that when returning again, the power of the first energy storage device 12 has met a certain work demand, and will not affect the user's demand for continuous power consumption, thereby improving work efficiency.

If the detachable first energy storage device 12 is discharged first and then the built-in second energy storage device 13 is discharged, after a period of time, the number of discharges of the first energy storage device 12 is much greater than that of the second energy storage device. The discharge times of 13 reduces the decay speed of the second energy storage device 13 and improves the durability of the power supply device 100 . Or, when the number of discharges of the first energy storage device 12 reaches the limit, but the number of discharges of the second energy storage device 13 has not reached the limit, at this moment, the power supply device 100 can still discharge, which improves 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 can be simply replaced, and at this time, the service life of the power supply device 100 can be extended.

It should be noted that as long as the discharge circuit 18 of the power supply device 100 has the above-mentioned first discharge state and the second discharge state, it belongs to the protection scope of the present application. When the first energy storage device 12 is not installed on the casing 11, on the one hand, it can be understood that the first power parameter value of the first energy storage device 12 at this time is lower than the first preset value, so that the discharge circuit 18 enters the first In the second state, the discharge circuit 18 is configured to control the discharge of the second energy storage device 13 when the first energy storage device 12 is not installed in the housing 11 . Alternatively, when the first energy storage device 12 is not installed on the housing 11, the discharge circuit 18 still has the first discharge state and the second discharge state when the first energy storage device 12 is installed on the housing 11, the first discharge state and the second discharge state are inherent characteristics of the discharge circuit 18 . That is to say, as long as the discharge circuit 18 can be switched to the first discharge state or the second discharge state when the first energy storage device 12 is installed in the housing 11, it is within the scope of protection of this application, and the first energy storage device 12 Actually, it does not matter whether it is attached to the case 11 or not, as long as the discharge circuit 18 has the functions of the above-mentioned first discharge state and the second discharge state.

The controller 19 is disposed on the circuit board assembly 15, and the discharge circuit 18 is at least partially disposed on the circuit board assembly 15, which facilitates the management and heat dissipation of various electronic components. Alternatively, the circuit on the circuit board assembly 15 for managing the first energy storage device 12 and the second energy storage device 13 may also be called a power management module. In this way, the modular arrangement of the circuit board assembly 15 is realized, which is convenient for installation and maintenance.

In this embodiment, the first energy storage device 12 includes two battery packs 122 , two mounting portions 111 are provided on the housing 11 , and the two battery packs 122 are respectively slidably mounted to the two mounting portions 111 . The two mounting portions 111 are respectively disposed on two opposite surfaces of the housing 11 . The two installation parts 111 are arranged symmetrically, and the two battery packs 122 are also arranged symmetrically, which can ensure the stability of the power supply device 100 . In this embodiment, the whole formed by the two battery packs 122 is understood as the first energy storage device 12 . It can be understood that one of the two battery packs 122 can also be understood as the first energy storage device 12 , and the other can be understood as the third energy storage device that is the same as 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 includes at least two battery packs 122 , and the total energy of the first energy storage device 12 is greater than the total energy of the second energy storage device 13 . Of course, it can be understood that the total energy of the first energy storage device 12 may also be smaller than the total energy of the second energy storage device 13 . In this embodiment, the total energy of the first energy storage device 12 is greater than or equal to 100 Wh and less than or equal to 2000 Wh. 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 greater than or equal to 400Wh and less than or equal to 1000Wh. In this way, the power supply device 100 can not only meet the user's demand for power consumption time, but also avoid the problems of the power supply device 100 being too heavy and bulky. The total capacity of the second energy storage device 13 is greater than or equal to 100Wh and less than or equal to 1000Wh. Alternatively, the total capacity of the second energy storage device 13 is greater than or equal to 100Wh and less than or equal to 500Wh. In this way, the portable power supply device can not only meet the user's urgent demand for electricity, but also avoid the problems of the power supply device 100 being too heavy and bulky.

As shown in FIG. 7 , in this embodiment, the first energy storage device 12 is also configured to be detachable from the housing 11 to supply power to the electric tool 200 . In this way, when the user works outdoors, he can directly supply power to the electric tool 200 through the power supply device 100 , but this will limit the moving range of the electric tool 200 and reduce the working efficiency. However, if the first energy storage device 12 is disassembled to supply power to the electric tool 200, the electric tool 200 can be moved freely and conveniently, thereby facilitating the user's operation. Alternatively, when the power of the first energy storage device 12 of the power supply device 100 is insufficient, the power supply device on the electric tool 200 can be used as the first energy storage device 12 , thereby prolonging the service life of the power supply device 100 . The first energy storage device 12 on the power supply device 100 is configured as a platform-based power supply device, which improves the applicability of the power supply device 100 and reduces the user's use cost. The electric tool 200 can be, for example, a hair dryer as shown in FIG. 7 . The electric tool 200 can also be other gardening tools, such as lawn mowers, mowers, chain saws, pruners and the like. The electric tool 200 can also be a torque output tool such as an electric drill or an electric hammer, or a sawing tool such as an electric circular saw, a jig saw, a reciprocating saw, or a grinding tool such as an angle grinder or a sander. . Certainly, in other implementation manners, the electric tool 200 can also be configured to be able to supply power to the hand-push electric tool 200 , such as a hand-push lawn mower, a hand-push snowplow, and the like. In other embodiments, the electric tool 200 can also be a smart device, such as a smart lawn mower. In other embodiments, the power tool 200 can also be a riding vehicle, such as a riding lawn mower. Certainly, in other implementation manners, the electric tool 200 can also be other electric tools, such as a lamp, a washing machine, and the like.

As shown in Figure 2 and Figure 8, the power output interface 14 includes a DC output interface 141 and an AC output interface 142, the DC output interface 141 is set to output DC power to DC electrical equipment, and the AC output interface 142 is set to output AC power to AC power equipment. In this way, the power supply device 100 can be used as a DC energy storage device to output DC power, and can also replace the mains grid to output AC power, which improves the application range of the power supply device 100 .

The discharge circuit 18 is electrically connected to the DC output interface 141 and the first energy storage device 12 , and the discharge circuit 18 is also electrically connected to the DC output interface 141 and the second energy storage device 13 . When it is necessary to output direct current to external direct current electrical equipment, the first energy storage device 12 first outputs electric power until the first power parameter value drops to the first preset value and then stops outputting electric power, and then the second energy storage device 13 continues to output electricity.

The DC output interface 141 can be a USB (Universal Serial Bus) output interface, and the USB output interface can output DC with a relatively low voltage, for example, a DC with a voltage of 5V and a current not greater than 500 mA. The USB output interface can be connected with devices such as mobile phones and computers to charge the mobile phones and computers. Alternatively, the USB output interface can also be connected with other USB devices to supply power to the USB devices, and the USB devices are usually some devices with less power consumption and lower power, such as recording pens, music players, and the like. In this embodiment, the USB output interface may be a Type-A interface or a Type-c interface. The DC output interface 141 may also include both a Type-A interface and a Type-c interface, which can improve the scope of application of the power supply device 100 .

The AC output interface 142 is configured to output AC power to AC electrical equipment. 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 boost circuit 21 . The inverter 20 is configured to convert DC power into AC power. The booster circuit 21 is electrically connected to the discharge circuit 18 and the inverter 20 . The inverter 20 is arranged between the booster circuit 21 and the AC output interface 142 . When it is necessary to output alternating current to the outside world, the first energy storage device 12 or the second energy storage device 13 outputs direct current, and the direct current is input to the booster circuit 21. After passing through the booster circuit 21, the output voltage of the direct current output by the booster circuit 21 is high. at the input voltage. The inverter 20 converts the DC power output by the booster circuit 21 into AC power and outputs it to the AC output interface 142 , and the AC output interface 142 supplies power to AC electrical equipment.

In this 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. Of course it can be understood that the nominal voltage of the first energy storage device 12 can 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 can be greater than or equal to 36V and less than or equal to 80V, or the first energy storage device The nominal voltage of 12 can 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 can be understood 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 .

The AC output interface 142 may include a socket, and the AC output interface 142 can output 120V AC power. In other embodiments, the AC output interface 142 can also output 100V AC, or 110V AC, or 127V AC, or 220V AC, or 230V AC, or 240V AC. Generally speaking, the voltage of the alternating current outputted by the alternating current output interface can be basically the same as the voltage of the municipal power grid in the area, which can meet the electricity demand of most of the alternating current electric equipment.

In this embodiment, the boost module converts the 56V direct current output by the first energy storage device 12 or the second energy storage device 13 into high voltage direct current, and then the inverter 20 converts the high voltage direct current into alternating current. When it is necessary to supply power to external AC power equipment, the controller 19 controls the discharge state of the discharge circuit 18 so that the first energy storage device 12 is first discharged to the AC output interface 142 until the first power parameter value of the first energy storage device 12 When the first preset value is reached, the discharge of the first energy storage device 12 is stopped and the discharge of the second energy storage device 13 is started.

The maximum output power of the power supply device 100 is greater than or equal to 500W and less than or equal to 6000W. In this way, the power supply device 100 can supply power to high-power electrical equipment, and at the same time, the efficiency of the electric energy of the power supply device 100 can be ensured. In other embodiments, the maximum output power of the power supply device 100 is greater than or equal to 1000W and less than or equal to 1500W, which can improve the efficiency of the power supply device 100 . Or, in other embodiments, the maximum output power of the power supply device 100 is greater than or equal to 1500W and less than or equal to 3000W, so that the load capacity of the power supply device 100 can be improved.

The power supply device 100 also includes a charging circuit 22 and a power input interface 23 , the charging circuit 22 is electrically connected to the power input interface 23 and the first energy storage device 12 , and the charging circuit 22 is also electrically connected to the power input interface 23 and the second energy storage device 13 . The charging circuit 22 outputs the electric energy output by the charging equipment 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 charging state of the charging circuit 22 . The controller 19 can control the charging circuit 22 to be in the first charging state and the 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. At this time, the charging circuit 22 charges the second energy storage device 13 without charging. Charge the first energy storage device 12 . And 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 at this time. And charge the first energy storage device 12 . That is to say, when the power supply device 100 needs to be charged, the built-in second energy storage device 13 can be charged first, and the first energy storage device 12 can be charged after the second energy storage device 13 is charged to a certain state. This can ensure that the power of the second energy storage device 13 of the power supply device 100 is relatively sufficient. When the user urgently needs to use the power supply device 100, the second energy storage device 13 can be charged to a certain state in a short time, and then the power supply device 100 can be used for work. The device 12 is charged by other equipment, and after working for a period of time, the first energy storage device 12 is installed on the casing 11 to use the power supply device 100, which not only ensures the user's urgent need for electricity, but also prolongs the The user's power consumption time.

As shown in FIGS. 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 this embodiment, the functions of the discharging circuit 18 and the charging circuit 22 are both implemented by the driving circuit 24 . The driving circuit 24 includes a plurality of driving switches, and the driving switches form a bridge circuit. The first energy storage device 12 may be provided with a plurality of battery packs 122, taking the first energy storage device 12 as an example with two battery packs 122, 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 this embodiment, the driving circuit 24 includes driving switches Q1 , Q2 , Q3 , Q4 , Q5 and Q6 . The driving switches Q1 - 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 the discharge switch of the first battery pack 122d, the driving switch Q4 is the charging switch of the first battery pack 122d, the driving switch Q2 is the discharging switch of the second battery pack 122e, and the driving switch Q5 is the charging switch of the second battery pack 122e. Switches, the drive switch Q3 is a discharge switch of the second energy storage device 13 , and the drive switch Q6 is a charge switch of the second energy storage device 13 . In this embodiment, the whole formed by the driving circuit 24 can be considered as the discharge circuit 18, and can also be considered as the charging circuit 22. The circuits included in the discharging circuit 18 and the circuits included in the charging circuit 22 can overlap. In fact, as long as A circuit module that can realize the first discharge state and the second discharge state can be regarded as the discharge circuit 18 , and similarly, a circuit module that can realize the first charge state and the second charge state can also be regarded as the charge circuit 22 .

During the discharge process, the discharge 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 . Exemplarily, when the first power parameter value of the first energy storage device 12 is higher than a first preset value, the controller 19 controls the discharge circuit 18 to be in the first discharge state. That is to say, when the first battery pack 122d or the second battery pack 122e still has power, here taking the first battery pack 122d and the second battery pack 122e as an example, the discharge circuit 18 is in the first discharge state. At this time, the controller 19 controls the driving switch Q3 to be turned off, and at the same time 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 will flow through the first battery pack in sequence. The positive pole of 122d, drive switch Q4 and drive switch Q1 to make the first battery pack 122d discharge, the current of the second battery pack 122e will flow through the positive pole of the second battery pack 122e, drive switch Q5 and drive switch Q2 in order to make the second battery pack 122d The battery pack 122e is discharged, and the circuit connected in series with the second energy storage device 13 is disconnected, so that the first battery pack 122d and the second battery pack 122e can discharge, while 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 both the first battery pack 122d and the second battery pack 122e are discharged, the discharge circuit 18 is in the second discharge state. At this time, the controller 19 controls the drive switch Q1 and the drive switch Q2 to be turned off, and controls the drive switch Q3 and the drive switch Q6 to be turned on. At this time, the current of the second energy storage device 13 will flow through the positive pole of the second energy storage device 13 in sequence. 1. Driving the switch Q6 and driving the switch Q3 to discharge the second energy storage device 13 , while 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, usually, the voltage of the second energy storage device 12 is higher than that of the first energy storage device 13 at this time. The device 12, the first energy storage device 12 is also basically unable to discharge. At this time, it is also considered that the first energy storage device 12 stops discharging and the second energy storage device 13 starts discharging. 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 discharge amount of the first energy storage device 12 is much smaller than that of the second energy storage device 13 , it is also considered that the first energy storage device 12 stops discharging at this time.

Likewise, during the charging process, the charging 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 . Exemplarily, 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. When the charging circuit 22 is in the first charging state, the charging circuit 22 only charges the second energy storage device 13 . At this time, the controller 19 controls the drive switch Q5 and the drive switch Q4 to be turned off, and at the same time controls the drive switch Q3 and the drive switch Q6 to be turned on. At this time, the current will flow through the drive switch Q3, the drive switch Q6, and the second energy storage device 13 in sequence. to charge the second energy storage device 13, the circuit connected in series with the first battery pack 122d is disconnected, and the circuit connected in series with the second battery pack 122e is also disconnected. And 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 starts to charge the first energy storage device 12 at this time, and the controller 19 controls the charging Circuit 22 is in the second state of charge. Exemplarily, the controller 19 controls the driving switch Q6 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, a current can flow through the driving switch Q1, the driving switch Q4, the first The positive pole of the battery pack 122d is used to charge the first battery pack 122d, another current may flow through the drive switch Q2, the drive switch Q5, and the positive pole of the second battery pack 122e in order to charge the second battery pack 122e, and the second energy storage The circuit connected in series with device 13 is in an open state.

In this embodiment, a transition stage is also included in the process of switching the discharge circuit 18 from the first discharge state to the second discharge state. In this transition stage, when the first energy storage device 12 is discharged to the first preset value, firstly Allow the second energy storage device 13 to start discharging for a preset period of time, and then make 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 at the millisecond level. Therefore, it can be understood that although the first energy storage device 12 did not stop discharging during the transition period, because this time is very short and the discharge current or discharge capacity of the first energy storage device 12 is very small at this time, it can also be considered as a transition period. The first energy storage device 12 in the stage stops discharging, and the state of the discharge circuit 18 in the transition stage may be equivalent to the second discharge state of the discharge circuit 18 . Setting the transition stage can make the discharge from the first energy storage device 12 seamlessly switch to the discharge from the second energy storage device 13, which avoids the need to stop the discharge of the first energy storage device 12 while the discharge of the second energy storage device 13 has not yet started. The situation of the pause appears, so as to avoid bringing a bad experience to the user.

Exemplarily, the working process of the discharge circuit 18 in the transition stage will be described below. As shown in Figure 9, when the discharge circuit 18 is in the first discharge state, the first energy storage device 12 is discharged first, taking the first battery pack 122d as an example, at this time, the drive switch Q4 and the drive switch Q1 are turned on, and the first The battery pack 122d is discharged. When the first energy storage device 12 is discharged until the first power parameter value reaches the first preset value, the controller 19 controls the discharge circuit 18 to enter the transition stage. At this time, the controller 19 controls the drive switch Q4 to be turned off and the drive switch Q1 to be turned on. , while controlling the drive switch Q3 and the drive switch Q6 to be turned on, at this time the second energy storage device 13 starts to discharge, but the first energy storage device 12 does not stop discharging immediately at this time. Next, when the second energy storage device 13 has been continuously discharging, the controller 19 may control the driving switch Q1 to be turned off. The process of this transition stage is very short, and it can be considered that in this transition stage, the first energy storage device 12 is also equivalent to stopping the discharge, but the setting of this transition stage does realize the discharge from the first energy storage device 12 and the discharge from the first energy storage device 12. The seamless docking of the discharge of the second energy storage device 13 .

As shown in FIG. 8 , the power supply device 100 also includes a current detection module 25. 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. The current detection module 25 can detect the current The direction of the current through the sense resistor 26. In this way, the safety risk caused by the failure of the driving switch can be avoided. Taking the first battery pack 122d and the second battery pack 122e as an example, if the drive switch Q4 is short-circuited, if the voltage of the second battery pack 122e is higher than the voltage of the first battery pack 122d, a huge current will flow from the second battery pack. The pack 122e flows to the first battery pack 122d, causing great danger to the power supply device 100 . The current detection module 25 detects the current flowing through the first battery pack 122d. When a large current is detected, the controller 19 controls the drive switch Q2 to turn off, and the large current will not continue to flow to the first battery pack 122d. , to avoid the occurrence of dangerous situations.

In this embodiment, the first power parameter value is the 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 . In this way, when the power supply device 100 is discharging, the first energy storage device 12 is preferentially discharged until its voltage reaches the discharge cut-off voltage, and then the second energy storage device 13 is started to discharge. That is to say, the first energy storage device 12 is first discharged until its power is exhausted, and then the second energy storage device 13 is discharged. In this way, the discharge times of the second energy storage device 13 can be reduced, the service life of the power supply device 100 can be prolonged, and the decay rate of the total energy of the second energy storage device 13 can be reduced. Furthermore, the power supply device 100 can meet the requirements of sudden power consumption and long-term power consumption. The second power parameter value can also be set as the voltage value of the second energy storage device 13 , and the second preset value can be set as the full voltage of the second energy storage device 13 . In this way, when the power supply device 100 is charging, the second energy storage device 13 is preferentially charged until its voltage value reaches the full voltage, and then the first energy storage device 12 is charged. That is to say, when the power supply device 100 is charging, it can give priority to fully charging the second energy storage device 13 before charging the first energy storage device 12 .

For example, in this embodiment, the first energy storage element 121 is a lithium battery, and the second energy storage element 131 is also a lithium battery. Exemplarily, the first energy storage element 121 is an 18650 cell, and the second energy storage element 131 is also an 18650 cell. Certainly, in other embodiments, the first energy storage element 121 may also be a 21700 battery cell. In other embodiments, the second energy storage element 131 may also be a 21700 battery cell. The discharge cut-off voltage of the first energy storage device 12 is also the discharge cut-off voltage of the first energy storage element 121. The discharge cut-off voltage of the first energy storage element 121 can be set to the conventional discharge cut-off voltage of the 18650 cell, for example, 2.75V or 2.5V. And the full voltage of the second energy storage device 13 can be set as the full voltage of the second energy storage element 131, such as the full voltage of the second energy storage element 131 can be set as the full voltage of the 18650 cell, for example, it can be set as 4.2V. It can be understood that as long as the first preset value is set to be substantially equal to the discharge cut-off voltage, the first preset value is considered to be the discharge cut-off voltage of the first energy storage device 12 . As long as the second preset value is set to be substantially equal to the full voltage, the second preset value is considered to be the full voltage of the second energy storage device 13 .

It can be understood that, in other embodiments, the first power parameter value can also be other parameters that can reflect the amount of electric energy stored in the first energy storage device 12, or the first power parameter value can also be set to other parameters that can reflect the first energy storage device 12. A parameter of fully discharging the energy storage device 12 . For example, the first power parameter value may be the remaining power of the first energy storage device 12 . The second power parameter value can also be other parameters that can reflect the amount of electric energy stored in the second energy storage device 13 , or the second power parameter value can also be set to other parameters that can reflect that the second energy storage device 13 is fully charged. For example, the second power parameter value may be the remaining power 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 cell unit, for example, both are lithium 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, and the second energy storage element 131 is a lithium iron phosphate battery, or a nickel-chromium battery, or a lead storage battery, or a pouch battery.

In other embodiments, the first energy storage element 121 will include a first anode made of a first material, and the second energy storage element 131 will include a second anode made of a second material, such as the first energy storage element 121 It is a lithium battery cell, and the second energy storage element 131 is a lithium iron phosphate battery cell. At this time, 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 supercapacitor, also known as an electrochemical capacitor. Exemplarily, it is an asymmetric supercapacitor. Electrochemical capacitors based on the principle of bipolar plate capacitance generally adopt a symmetrical design. The positive and negative electrodes use two identical materials and quality matching, such as activated carbon electrodes. Symmetrical capacitors generally have no positive and negative electrodes, although their power density And cycle life is excellent, but its energy density is much lower than lithium-ion batteries, nickel-metal hydride batteries, etc. Asymmetric capacitance, the two poles use different materials, such as carbon material/transition metal oxide system electrode material, carbon material/conductive polymer system electrode material, or two activated carbon electrodes with different electrochemical properties, which improves the performance of electrochemical capacitors. The energy density has reached 80-120Wh/kg, so that it can be used as the 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. In this way, the efficiency of discharging the first energy storage device 12 can be improved.

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 exchange information with the remote device, for example, the communication module 27 can receive the information sent by the remote device, and can also send the information to the remote device. The remote device may be a client terminal device such as a user's mobile phone or a computer. The user may manage the power supply device 100 through the remote device, and may also know the status of the power supply device 100 at any time. The communication module 27 can be, for example, a WIFI module, a Bluetooth module and the like.

The display module 28 can be a display screen arranged on the housing 11 , and the display screen can display status parameters or performance parameters of the power supply device 100 . The input module 29 can be operated by the user to input some information, and the input module 29 can be connected with some keys that can be operated by the user. The input module 29 may also include touch keys arranged on the display screen.

As shown in FIG. 9 , the discharge sequence of the power management module is specifically introduced below.

Step S1, detecting whether the first energy storage device is installed on the installation part. If the first energy storage device 12 is not installed on the installation part 111, go to step S2. If the first energy storage device 12 is installed to the installation part 111, then go to step S3.

Step S2, controlling only the second energy storage device to discharge. At this time, the controller 19 only controls the second energy storage device 13 to discharge, and the first energy storage device 12 does not discharge.

Step S3, judging 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 discharge circuit 18 to enter the first discharge state, that is, enter step S4. If the first power parameter value is lower than the first preset value, the controller 19 controls the discharge circuit 18 to enter the second discharge state, that is, enter step S2.

Step S4, controlling only the first energy storage device to discharge. At this time, the controller 19 controls the first energy storage device 12 to discharge and the second energy storage device 13 not to discharge.

Repeat step S3.

In other embodiments, the first preset value can also be set higher than the discharge cut-off voltage, so that the first energy storage device 12 can be discharged when it has a relatively large amount of electricity, which can ensure that the first energy storage device 12 12 can store less electricity, so as to reduce the decay speed of the first energy storage device 12 . If the first preset value is set higher than the discharge cut-off voltage, at this time, during the discharge process of the first energy storage device 12, it can be detected again whether the first power parameter value of the first energy storage device 12 reaches the discharge cut-off voltage. It is judged whether the first energy storage device 12 is completely discharged. That is to say, the voltage value for judging whether the first energy storage device 12 can be discharged can be set higher than the voltage value for judging whether the first energy storage device 12 is fully discharged.

As shown in FIG. 1 , the power supply device 100 further includes a first adapter 30 and a second adapter 31 disposed separately from the housing 11 . The first adapter 30 includes a first adapter output interface 30 a that can match the power input interface 23 , and the second adapter 31 includes a second adapter output interface 31 a that can match the power input interface 23 . The first adapter 30 includes a first adapter input interface 30b, the first adapter input interface 30b is configured to be connected to the mains grid to electrically connect the mains grid to the power input interface 23, the first adapter input interface 30b can be connected to the mains grid socket connected to the plug. The first adapter 30 also includes a rectification circuit connected between the first adapter input interface 30b and the first adapter output interface 30a, and the rectification circuit can convert the alternating current output from the mains grid into direct current.

The second adapter 31 includes a second adapter input interface 31 b capable of being connected to the solar device 300 . The second adapter 31 can output the electric energy converted from solar 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 FIG. 12 includes the power supply device 100 and the charger 41 in FIG. 1 . The first energy storage device 12 in the power supply device 100 can be disassembled from the housing 11 , and the first energy storage device 12 can also be detachably installed on the charger 41 . When the first energy storage device 12 is combined with the charger 41 , the charger 41 can charge the first energy storage device 12 .

Exemplarily, the charger 41 includes a charger main body 411, on which a second mounting part 412 matching the battery pack interface 122b is provided, and the shape and structure of the second mounting part 412 are consistent with the installation of the power supply device 100. The shape and structure of the portion 111 are basically the same. In this way, the battery pack 122 can be slidably connected to the installation portion 111 on the casing 11 , and can also be slidably connected to the second installation portion 412 on the charger 41 . That is to say, 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 also be charged through the charger 41 , thereby improving the application range of the battery pack 122 . When the power supply device 100 is used by the user to work and it is inconvenient to charge, the user can also 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 user's work efficiency. efficiency.

In one embodiment, the boosting circuit 21 in the power supply device 100 may require a higher boosting gain, but components such as semiconductor elements or electrolytic capacitors in the general boosting circuit cannot support a higher boosting gain.

Referring to the boost circuit 21 shown in FIG. 13 , without adding semiconductor elements or electrolytic capacitors with higher withstand voltage performance, the direct current output by the first energy storage device 12 or the second energy storage device 13 can be passed through After the isolated voltage conversion circuit 211, the target voltage value is obtained. 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, the two circuits include two sets of transformers, and the primary sides of the two circuits are connected in parallel And the secondary sides are connected in series. Exemplarily, the DC voltage output by the first energy storage device 12 or the second energy storage device 13 is a voltage of 30V-60V, and a DC voltage of 300V-600V can be obtained after passing through the isolated voltage conversion circuit 211, wherein the isolated voltage The conversion circuit 211 may be composed of two electrically isolated boost circuits with a boost gain of 5 times, so as to achieve the effect of a boost gain of 10 times.

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 discharge circuit 18 may include a voltage conversion module 181 and a first step-down module 182 connected to the Type-A interface, a second step-up/down module 183 connected to the bidirectional Type-c interface, and a unidirectional Type-c interface. The third step-up/down module 184. In this embodiment, the controller 19 can first detect the effective USB interface connected to the electric device in the DC output interface 141, and then control the voltage conversion module 181 and the USB interface connected to the effective USB interface according to the working voltage required by the connected device. The first step-down module 182 or the second step-up/step-down module 183 or the third step-up/step-down module 184 performs 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 being stepped down by the voltage conversion module 181 . The controller 19 can control the first step-down module 182 or the second step-up/step-down module 183 or the third step-up/step-down module 184 to perform voltage conversion again according to the difference of each USB interface connected to the electric device.

Claims (58)

1. A power supply device, comprising:

   case;

   a first energy storage device, including at least one first energy storage element, the first energy storage device is detachably mounted to the housing;

   A second energy storage device, including at least one second energy storage element, the second energy storage element is arranged in the housing;

   Power output interface, set to output power to external electrical equipment;

   A discharge circuit, electrically connected to the electric energy output interface, and electrically connected to the second energy storage device and the first energy storage device;

   a controller, controlling the discharge state of the discharge circuit;

   The controller controls the discharge circuit to control the first energy storage device to discharge when the first power parameter value of the first energy storage device is higher than a first preset value and the second energy storage device does not discharging, and controlling the first energy storage device not to 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.
2. The power supply device according to claim 1, wherein the second energy storage device is fixedly arranged in the housing.
3. The power supply device according to claim 1, wherein the discharge circuit is configured to control the discharge of the second energy storage device when the first energy storage device is not installed in the housing.
4. The power supply device according to claim 1, wherein the power output interface includes a DC output interface, 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.
5. The power supply device according to claim 1, wherein the power output interface includes an AC output interface, and the power supply device further includes an inverter for converting direct current into alternating current, and the inverter is electrically connected to the alternating current output interface and the discharge circuit.
6. The power supply device according to claim 5, further comprising a voltage boosting circuit electrically connecting the discharging circuit and the inverter.
7. The power supply device according to claim 1, wherein the maximum output power of the power supply device is greater than or equal to 500W and less than or equal to 6000W.
8. The power supply device according to claim 1, further comprising: a power input interface and a charging circuit, the charging circuit is electrically connected to the power input interface and the second energy storage device, and the charging circuit is electrically connected to the power input The interface is connected to the first energy storage device, the charging circuit is electrically connected to the controller, and the controller controls the charging state of the charging circuit.
9. The power supply device according to claim 8, wherein the charging circuit is configured to charge the second energy storage device when the second power parameter value of the second energy storage device is lower than a second preset value And the first energy storage device is not charged.
10. The power supply device according to claim 9, wherein the charging circuit is configured not to charge the second energy storage device when the second power parameter value of the second energy storage device is higher than the second preset value. The second energy storage device charges and charges the first energy storage device.
11. The power supply device according to claim 1, wherein the first power parameter value is a voltage value.
12. The power supply device according to claim 1, wherein the first power parameter value is a remaining power value.
13. The power supply device according to 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.
14. The power supply device according to claim 1, wherein the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
15. The power supply device according to claim 1, wherein the first energy storage element includes a first positive electrode made of a first material, and the second energy storage element includes a second positive electrode made of a second material.
16. The power supply device according to claim 1, wherein the energy density of the first energy storage element is different from the energy density of the second energy storage element.
17. The power supply device according to claim 1, wherein the casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.
18. The power supply device according to claim 17, wherein when the first energy storage device is coupled to the installation part, the first energy storage device is disposed outside the housing.
19. The power supply device according to claim 17, wherein the casing provides two mounting portions, and the two mounting portions are respectively disposed on two opposite surfaces of the casing.
20. The power supply device according to claim 1, 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.
21. The power supply device according to claim 1, further comprising: a communication module capable of receiving information sent by a remote device or sending information to the remote device.
22. The power supply device according to claim 1, further comprising a power input interface and an adapter provided separately from the housing, the adapter comprising an adapter output interface matching the power input interface.
23. The power supply device according to claim 22, wherein the adapter includes an adapter input interface connectable to a mains power grid and a rectification circuit connected between the adapter input interface and the adapter output interface.
24. The power supply unit of claim 22, wherein the adapter includes an adapter input interface connectable to a solar device.
25. The power supply device according to claim 1, wherein the first power parameter value is the voltage value of the first energy storage device, and the first preset value is set as a discharge cut-off of the first energy storage device Voltage.
26. A power supply device, comprising:

    case;

    The first energy storage device includes at least one first energy storage element, the first energy storage device is detachably mounted to the housing, and the first energy storage device is also configured to be detachable from the housing disassembled to power a power tool;

    A second energy storage device, including at least one second energy storage element, the second energy storage element is arranged in the housing;

    Power output interface, set to output power to external electrical equipment;

    A discharge circuit, electrically connected to the electric energy output interface, and electrically connected to the second energy storage device and the first energy storage device;

    a controller, controlling the discharge state of the discharge circuit;

    The controller controls the discharge circuit to control the first energy storage device to discharge when the first power parameter value of the first energy storage device is higher than a first preset value and the second energy storage device does not discharging, and controlling the first energy storage device not to 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.
27. The power supply device according to claim 26, wherein the second energy storage device is fixedly arranged in the housing.
28. The power supply device according to claim 26, wherein the discharge circuit is configured to control the discharge of the second energy storage device when the first energy storage device is not installed in the housing.
29. The power supply device according to claim 26, wherein the maximum output power of the power supply device is greater than or equal to 500W and less than or equal to 6000W.
30. The power supply device according to claim 26, further comprising a charging circuit configured to charge the second energy storage device when the second power parameter value of the second energy storage device is lower than a second preset value. charging the first energy storage device and not charging the first energy storage device.
31. The power supply device according to claim 30, wherein the charging circuit is configured not to charge the second energy storage device when the second power parameter value of the second energy storage device is higher than the second preset value. The second energy storage device charges and charges the first energy storage device.
32. The power supply device according to claim 26, wherein the first power parameter value is a voltage value.
33. The power supply device according to claim 26, wherein the first power parameter value is a remaining power value.
34. The power supply device according to 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.
35. The power supply device according to claim 26, wherein the total energy of the first energy storage device is greater than the total energy of the second energy storage device.
36. The power supply device according to claim 26, wherein the casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.
37. The power supply device according to claim 36, wherein when the first energy storage device is coupled to the installation part, the first energy storage device is disposed outside the housing.
38. The power supply device according to claim 36, wherein the casing provides two mounting portions, and the two mounting portions are arranged symmetrically on opposite sides of the casing.
39. The power supply device according to claim 26, 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.
40. The power supply device according to claim 26, wherein the first power parameter value is the voltage value of the first energy storage device, and the first preset value is set as the discharge cut-off of the first energy storage device Voltage.
41. A power supply system, comprising a power supply unit and a charger, the power supply unit comprising:

    case;

    a first energy storage device, including at least one first energy storage element, the first energy storage device is detachably mounted to the housing;

    a second energy storage device comprising at least one second energy storage element at least partially disposed within the housing;

    Power output interface, set to output power to external electrical equipment;

    A discharge circuit, electrically connected to the electric energy output interface, and electrically connected to the second energy storage device and the first energy storage device;

    a controller, controlling the discharge state of the discharge circuit;

    The controller controls the discharge circuit to control the first energy storage device to discharge when the first power parameter value of the first energy storage device is higher than a first preset value and the second energy storage device does not Discharging, and controlling the first energy storage device not to 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 detachably mounted to the charger, the charger configured to charge the first energy storage device when coupled to the first energy storage device.
42. The power system of claim 41, wherein said first energy storage device is further configured to be detachable from said housing to power a power tool.
43. The power supply system according to claim 41, wherein the housing is formed with a first mounting portion, the first energy storage device is configured to be slidably connected to the first mounting portion, and the charger is formed with a The second installation part, the first energy storage device is configured to be slidably connected to the second installation part.
44. The power supply system according to claim 41, wherein the second energy storage device is fixedly arranged in the housing.
45. The power system according to claim 41, wherein the discharge circuit is configured to control the discharge of the second energy storage device when the first energy storage device is not mounted to the housing.
46. The power supply system according to claim 41, wherein the maximum output power of the power supply device is greater than or equal to 500W and less than or equal to 6000W.
47. The power supply system according to claim 41, wherein the power supply device further includes a charging circuit, and the charging circuit is configured to be lower than a second preset value when the second power parameter value of the second energy storage device is lower than a second preset value The second energy storage device is charged and the first energy storage device is not charged.
48. The power supply system according to claim 41, wherein the charging circuit is configured not 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 second energy storage device charges and charges the first energy storage device.
49. The power supply system according to claim 41, wherein the first power parameter value is a voltage value.
50. The power supply system according to claim 41, wherein the first power parameter value is a remaining power value.
51. 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.
52. 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.
53. The power supply system according to claim 41, wherein the casing is formed with a mounting portion, and the first energy storage device is slidably mounted to the mounting portion.
54. The power supply system according to claim 53, wherein when the first energy storage device is coupled to the mounting portion, the first energy storage device is disposed outside the housing.
55. The power supply system according to claim 53, wherein the casing provides two mounting portions, and the two mounting portions are arranged symmetrically on opposite sides of the casing.
56. The power supply system according to 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.
57. The power supply system according to claim 41, wherein the first power parameter value is the voltage value of the first energy storage device, and the first preset value is set as the discharge cut-off of the first energy storage device Voltage.
58. A method for controlling a power supply device, the power supply device comprising: a housing, a first energy storage device, a second energy storage device, a discharge circuit, and a controller, the first energy storage device including at least one first energy storage element , the first energy storage device is detachably mounted to the housing, the second energy storage device includes at least one second energy storage element, and the second energy storage element is arranged in the housing; The control method includes the steps of:

    judging whether the first power parameter value of the first energy storage device is higher than a first preset value;

    controlling the discharge state of the discharge circuit according to whether the first power parameter value is higher than the first preset value;

    Wherein, when the first power parameter value of the first energy storage device is higher than the first preset value, the first energy storage device is controlled to discharge and the second energy storage device is not discharged, and the second energy storage device is controlled to discharge. When the first power parameter value of an energy storage device is lower than the first preset value, the first energy storage device is controlled not to discharge and the second energy storage device is discharged.

Images