Energy storage power supply circuit and energy storage power supply

Abstract

The utility model discloses an energy storage power supply circuit and an energy storage power supply. The energy storage and power supply circuit is applied to the portable energy storage equipment and comprises a microcontroller, a bidirectional DC-DC circuit, a battery module, a charging and discharging interface and a voltage regulating knob, the microcontroller is connected with the bidirectional DC-DC circuit, the voltage regulating knob is connected with the microcontroller, the microcontroller controls the bidirectional DC-DC circuit through an enable signal, the bidirectional DC-DC circuit outputs a first voltage according to a first gear of the voltage regulating knob, and the bidirectional DC-DC circuit is further used for outputting a second voltage according to a second gear of the voltage regulating knob. The battery module supplies power to a load inserted into the charging and discharging interface through the first voltage or the second voltage; the charging and discharging interface is further used for being inserted into a photovoltaic power source or a vehicle-mounted power source, and the photovoltaic power source or the vehicle-mounted power source charges the battery module through the charging and discharging interface. According to the utility model, the circuit cost is reduced, the vehicle charging output voltage range is adjustable, and the requirements of most electric equipment are met.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of energy storage charging and discharging, and particularly relates to an energy storage power supply circuit and an energy storage power supply. BACKGROUND

[0002] At present, there are many models of portable energy storage devices on the market, but the car charging output function is relatively single, and most of them only support single output function of 12V output. Most portable energy storage devices have photovoltaic charging and 12V car charging input functions, and the functions of the two circuits are relatively independent. Some portable energy storage devices integrate TYPE-C interface and photovoltaic charging and 12V car charging functions, but due to the characteristics of TYPE-C interface, the maximum current input can only be compatible with 5A at present. Therefore, when photovoltaic charging is shared, the maximum input power cannot be reached, and the photovoltaic charging line is made into a TYPE-C interface compatible form, and there is a risk of burning other devices due to user's wrong place and misoperation.

[0003] Some portable energy storage devices on the market integrate TYPE-C interface and photovoltaic charging and 12V car charging functions as a bidirectional charging and discharging port, but there is a limit to the maximum input power. There is also a limit to the maximum input voltage, generally not more than 30V input voltage, otherwise it is easy to cause circuit damage or cannot charge, resulting in that high-voltage photovoltaic on the market cannot be applied. Therefore, the existing portable energy storage devices have a single function and voltage of car charging output, and cannot meet the needs of most electrical equipment. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of energy storage power supply circuit and energy storage power supply, increase the function of car charging output, realize the adjustable of circuit cost reduction and car charging output voltage range, meet the needs of most electrical equipment.

[0005] According to one aspect of the utility model, an energy storage power supply circuit is provided, which is applied to a portable energy storage device. The energy storage power supply circuit includes a battery module, a microcontroller, a bidirectional DC-DC circuit, a charging and discharging interface, and a voltage regulating knob.

[0006] The microcontroller is connected to the bidirectional DC-DC circuit, the bidirectional DC-DC circuit is connected to the battery module and the charging and discharging interface, the voltage regulating knob is connected to the microcontroller, the microcontroller is used to control the bidirectional DC-DC circuit through an enable signal, the bidirectional DC-DC circuit is used to output a first voltage according to a first gear of the voltage regulating knob, the bidirectional DC-DC circuit is also used to output a second voltage according to a second gear of the voltage regulating knob, and the battery module supplies power to a load inserted into the charging and discharging interface through the first voltage or the second voltage.

[0007] The charge-discharge interface is also used for inserting a photovoltaic power supply or a vehicle-mounted power supply, and the photovoltaic power supply or the vehicle-mounted power supply charges the battery module through the charge-discharge interface.

[0008] Optionally, the working state of the bidirectional DC-DC circuit includes at least one of a discharging state, a charging state and an off state.

[0009] Optionally, the first voltage is 12V-14V, and the second voltage is 5V-48V.

[0010] Optionally, the charging input voltage of the charge-discharge interface is 9V-60V, and the charging input current of the charge-discharge interface is 5A-10A.

[0011] Optionally, the energy storage power supply circuit further comprises a display screen, the display screen is in communication connection with the microcontroller, and the display screen is used to display the first voltage and the second voltage output by the bidirectional DC-DC circuit.

[0012] Optionally, the energy storage power supply circuit further comprises a key, the key is connected with the microcontroller, and the key is used to control the microcontroller to generate the enable signal.

[0013] Optionally, the energy storage power supply circuit further comprises a voltage acquisition circuit, the voltage acquisition circuit is connected with the microcontroller, the bidirectional DC-DC circuit and the charge-discharge interface, and the microcontroller is used to acquire a ready-to-charge state through the voltage acquisition circuit and enable the bidirectional DC-DC circuit.

[0014] Optionally, the battery module is connected with the microcontroller, and the battery module is further used to provide power supply for the microcontroller and the bidirectional DC-DC circuit.

[0015] Optionally, the energy storage power supply circuit further comprises a power supply circuit, the power supply circuit is connected with the microcontroller, the battery module, the voltage acquisition circuit and the charge-discharge interface, and the power supply circuit is used to convert the voltage of the battery module into a preset voltage and supply power for the microcontroller when the bidirectional DC-DC circuit is in a discharging state.

[0016] The power supply circuit is also used to obtain a second voltage of external charging input through the charge-discharge interface and supply power for the microcontroller when the bidirectional DC-DC circuit is in a charging state or an off state, or when the portable energy storage device is in a shutdown state.

[0017] According to another aspect of the utility model, a kind of energy storage power supply is provided, and the energy storage power supply includes the energy storage power supply circuit of any one in the above one aspect.

[0018] The technical scheme of the embodiment of the utility model discloses, the function of the photovoltaic charging interface, the car charging charging interface and the car charging output interface is integrated in one interface, the function of the car charging output is increased, the circuit cost reduction is realized, the range of the output voltage of the two-way DCDC circuit is adjusted through the rotation voltage regulating knob, the configurable of the car charging output voltage power supply range is realized, the equipment practicability of the car charging interface is increased, the range of the charging power and the charging voltage is increased, and the demand of most electrical equipment is compatible.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, and is not used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0021] Figure 1 It is a structure schematic view of a kind of energy storage power supply circuit provided according to the utility model embodiment;

[0022] Figure 2 It is a structure schematic view of another energy storage power supply circuit provided according to the utility model embodiment. DETAILED DESCRIPTION

[0023] In order to make those skilled in the art better understand the utility model scheme, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0024] It should be noted that the terms "first", "second", and the like in the description and in the claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Figure 1 It is a structural schematic diagram of a kind of energy storage power supply circuit provided according to the utility model embodiments, reference Figure 1 The embodiment of the utility model provides a kind of energy storage power supply circuit, energy storage power supply circuit is applied to portable energy storage equipment, energy storage power supply circuit includes: microcontroller 10, bidirectional DC-DC circuit 20, battery module 50, charge-discharge interface 30 and voltage regulating knob 40;

[0026] Microcontroller 10 is connected with bidirectional DC-DC circuit 20, bidirectional DC-DC circuit 20 is connected with battery module 50 and charge-discharge interface 30, voltage regulating knob 40 is connected with microcontroller 10, microcontroller 10 is used to control bidirectional DC-DC circuit 20 by enabling signal, bidirectional DC-DC circuit 20 is used to output first voltage according to the first gear of voltage regulating knob 40, bidirectional DC-DC circuit 20 is also used to output second voltage according to the second gear of voltage regulating knob 40, battery module 50 is powered by first voltage or second voltage to load inserted in charge-discharge interface 30;

[0027] Charge-discharge interface 30 is also used to insert photovoltaic power supply or vehicle-mounted power supply, photovoltaic power supply or vehicle-mounted power supply is charged to battery module 50 by charge-discharge interface 30.

[0028] Specifically, the microcontroller 10 controls the bidirectional DCDC circuit 20 switch through the enable signal, the microcontroller 10 enables the bidirectional DCDC circuit 20, and the bidirectional DCDC circuit 20 starts to work by default as an output function. At this time, the microcontroller 10 can communicate with the control chip in the bidirectional DCDC circuit 20 through the inter-integrated circuit (IIC) bus to control the output voltage of the bidirectional DCDC circuit 20. Alternatively, the first voltage is 12V-14V, and the second voltage is 5V-48V. The bidirectional DCDC circuit 20 outputs the first voltage by default according to the first gear of the voltage regulating knob 40, and the first voltage can be 13V. After default output, the user can adjust the first voltage output by the bidirectional DCDC circuit 20 by rotating the second gear of the voltage regulating knob 40, and the output voltage after adjustment is the second voltage, and the range of the second voltage is 5V-48V. The battery module 50 supplies power to the load inserted into the charge-discharge interface 30 through the first voltage or the second voltage. The microcontroller 10 controls the bidirectional DCDC circuit 20 to output the required voltage that needs to be adjusted, and the voltage regulating knob 40 increases the range of the output voltage, improving the applicability and experience of the outdoor power supply.

[0029] The charge-discharge interface 30 can be inserted into the photovoltaic charging interface of the photovoltaic power supply or the vehicle charging interface of the vehicle power supply to charge the battery module 50 in the portable energy storage device. The charge-discharge interface 30 integrates the photovoltaic charging interface and the DC charging interface, which can reduce the cost of the portable energy storage device. If the bidirectional DCDC circuit 20 is in the default output state, at this time the charge-discharge interface 30 is inserted into the photovoltaic charging interface to charge the battery module 50, the bidirectional DCDC circuit 20 automatically adjusts to the charging mode, and notifies the microcontroller 10 to enter the charging mode through IIC communication, and the microcontroller 10 obtains the allowed charging power and current according to the communication with the internal BMS of the battery module 50, adjusts the charging power and current of the bidirectional DCDC circuit 20. When the photovoltaic charging interface is pulled out, the bidirectional DCDC circuit 20 automatically restores to the output mode and outputs the first voltage of 13V. Thus, the automatic discharging and charging can be seamlessly switched, and the user's usage habit is facilitated.

[0030] Optionally, the charging input voltage of the charge-discharge interface is 9V-60V, and the charging input current of the charge-discharge interface is 5A-10A. Since the charge-discharge interface 30 uses the interface and circuit of the vehicle charger, it is not subject to the power and voltage and current limit of the circuit and interface connector, and theoretically can achieve compatibility with photovoltaic charging of up to 60V, and the maximum charging current can support the 10A charging current (600W) of the vehicle charging interface, which can meet the charging power requirements of most portable energy storage devices. Far exceeding the current TYPE-C interface compatible photovoltaic charging power of 100W, increasing the charging power, and by integrating the vehicle charging interface and photovoltaic charging interface, reducing the overall cost of the portable energy storage device.

[0031] The technical scheme of the embodiment of the utility model, the charge-discharge interface integrates the functions of the photovoltaic charging interface, the vehicle charging interface and the vehicle charging output interface in one interface, increases the function of the vehicle charging output, realizes the reduction of the circuit cost; by rotating the voltage regulating knob, the range of the output voltage of the bidirectional DCDC circuit is adjusted, the configurable range of the vehicle charging output voltage power supply is realized, the device practicability of the vehicle charging interface is increased, the range of the charging power and the charging voltage is increased, and the demand of most electrical equipment is compatible. In summary, the utility model solves the problem that the existing portable energy storage device has a single function and voltage of vehicle charging output, and cannot be compatible with the demand of most electrical equipment.

[0032] Figure 2 is another structure diagram of an energy storage power supply circuit according to the embodiment of the utility model, referring to Figure 2 Optionally, the energy storage power supply circuit further comprises a display screen 60, the display screen 60 is in communication connection with the microcontroller 10, and the display screen 60 is used for displaying the first voltage and the second voltage output by the bidirectional DCDC circuit 20.

[0033] Specifically, the microcontroller 10 communicates with the display screen 60 through I2C communication, displays the first voltage and the second voltage data output by the bidirectional DCDC circuit 20 on the screen for the user to confirm the output voltage.

[0034] Continuing to refer to Figure 2 Optionally, the energy storage power supply circuit further comprises a button 70, the button 70 is connected with the microcontroller 10, and the button 70 is used for controlling the microcontroller 10 to generate an enable signal.

[0035] Continuing to refer to Figure 2 The working state of the bidirectional DC-DC circuit 20 includes at least one of a discharging state, a charging state and an off state.

[0036] Specifically, the microcontroller 10 controls the bidirectional DCDC circuit 20 switch through the enable signal. When the button 70 is pressed, the microcontroller 10 generates an enable signal to control the bidirectional DCDC circuit 20, and the bidirectional DCDC circuit 20 starts to work and defaults to an output function. At this time, the microcontroller 10 can communicate with the control chip in the bidirectional DCDC circuit 20 through IIC to control the bidirectional DCDC circuit 20 to output the first voltage.

[0037] If it is necessary to close the vehicle charging output at the charge-discharge interface 30, the microcontroller 10 obtains the instruction to close the output of the bidirectional DCDC circuit 20 by pressing the button 70 again, and then the enable signal is closed, and the bidirectional DCDC circuit 20 enters a closed state.

[0038] After the bidirectional DCDC circuit 20 is enabled each time, it enters a default output state, and the output voltage is a default 13V output. After the output function is closed or enters a charging state, if the output function is restored or reopened by the button 70, the default output voltage is restored, and the last adjusted output voltage state is not retained. If the user adjusts the output voltage through the APP of the portable energy storage device or double-clicks the button 70 after adjusting the output voltage, the microcontroller 10 records the current output voltage, and the output voltage is adjusted in the subsequent output function of the bidirectional DCDC circuit 20.

[0039] With reference to Figure 2 Optionally, the energy storage power supply circuit further comprises a voltage acquisition circuit 80 connected with the microcontroller 10, the bidirectional DCDC circuit 20 and the charge-discharge interface 30. The microcontroller 10 is configured to obtain a charging preparation state through the voltage acquisition circuit 80, enable the bidirectional DCDC circuit 20, and control the charging power and current of the bidirectional DCDC circuit 20.

[0040] Specifically, when the bidirectional DCDC circuit 20 is in a closed state, if a photovoltaic charging interface or a vehicle 12V charging interface is inserted for charging at this time, the microcontroller 10 obtains a charging preparation state through the voltage acquisition circuit 80, enables the bidirectional DCDC circuit 20, and the bidirectional DCDC circuit 20 starts to work and controls the charging power and current of the bidirectional DCDC circuit 20 through IIC communication.

[0041] With reference to Figure 2 Optionally, the battery module 80 is connected with the microcontroller 10, and the battery module 80 is configured to provide power supply for the microcontroller 10 and the bidirectional DCDC circuit 20.

[0042] With reference to Figure 2Optionally, the energy storage power supply circuit further comprises a power supply circuit 90 connected with the microcontroller 10, the battery module 80, the voltage collection circuit 80 and the charge-discharge interface 30, and the power supply circuit 90 is used for converting the voltage of the battery module 80 or the voltage of the external charging input into a preset voltage and supplying power to the microcontroller 10.

[0043] The power supply circuit 90 is also used for obtaining the second voltage of the external charging input through the charge-discharge interface 30 and supplying power to the microcontroller when the bidirectional DC-DC circuit 20 is in the charging state or the closed state, or when the portable energy storage device is in the shutdown state.

[0044] Specifically, the power supply circuit 90 converts the voltage of the battery module 80 or the second voltage of the external charging input into 5V and supplies the voltage to the microcontroller 10 for power supply.

[0045] When the portable energy storage device is in the shutdown state, if the photovoltaic charging interface or the 12V vehicle charging interface is inserted for charging, the power supply circuit 90 obtains the second voltage through the charge-discharge interface 30, supplies power to the microcontroller 10, wakes up the whole machine, and after the whole machine is started, enters the step flow of the above-mentioned state that the bidirectional DC-DC circuit 20 is in the closed state.

[0046] The embodiment provides an energy storage power supply circuit applied to a portable energy storage device, integrates the vehicle charging output, the photovoltaic charging and the 12V vehicle charging interface on the same BUCK-BOOST circuit, realizes the bidirectional step-up and step-down charging and discharging function, and can control the switching of the bidirectional DC-DC circuit by the microcontroller. When the bidirectional DC-DC circuit needs to be turned on, the button is pressed, the microcontroller generates an enable signal to control the bidirectional DC-DC circuit, the bidirectional DC-DC circuit is by default in the output function, and the first voltage of 13V is output.

[0047] If the photovoltaic power charging interface or other DC charging interface is inserted during the output process, the charging mode is automatically switched, the portable energy storage device is charged, the charging interface is pulled out, the output function is automatically switched again within a set time, the output voltage is controllable and adjustable, the output voltage can be adjusted by adjusting the external voltage regulating knob, and the output voltage can be adjusted in the range of 5V-48V. The photovoltaic charging input voltage can reach 9V-60V, the corresponding photovoltaic charging input current can reach 5A-10A, the overall charging and discharging power is improved, the power supply demand of most existing DC electrical equipment is met, the charging application of most existing portable photovoltaic equipment and DC charging interfaces is met, and the market application of the portable energy storage device is improved.

[0048] The embodiment of the utility model further provides a kind of energy storage power supply, and the energy storage power supply includes the energy storage power supply circuit provided in any embodiment of the utility model.

[0049] Since the energy storage power supply comprises the energy storage power supply circuit provided by any embodiment of the utility model, the energy storage power supply and the energy storage power supply circuit have the same beneficial effects, which will not be described herein again.

[0050] The above specific embodiments do not constitute a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An energy storage power supply circuit for use in a portable energy storage device, comprising: a power supply; a power storage device; a power supply controller; a power storage device controller; and a power supply device controller interface. The application relates to a portable energy storage device, which comprises the following components: a microcontroller, a bidirectional DC-DC circuit, a battery module, a charge-discharge interface and a voltage regulating knob; the microcontroller is connected with the bidirectional DC-DC circuit, the bidirectional DC-DC circuit is connected with the battery module and the charge-discharge interface, the voltage regulating knob is connected with the microcontroller, the microcontroller is used for controlling the bidirectional DC-DC circuit through an enabling signal, the bidirectional DC-DC circuit is used for outputting a first voltage according to a first gear of the voltage regulating knob, the bidirectional DC-DC circuit is also used for outputting a second voltage according to a second gear of the voltage regulating knob, and the battery module supplies power to a load inserted into the charge-discharge interface through the first voltage or the second voltage; the charge-discharge interface is also used for inserting a photovoltaic power supply or a vehicle-mounted power supply, and the photovoltaic power supply or the vehicle-mounted power supply charges the battery module through the charge-discharge interface.

2. The energy storage power supply circuit of claim 1, wherein, The working state of the bidirectional DC-DC circuit comprises at least one of a discharging state, a charging state and a closed state.

3. The energy storage power supply circuit of claim 1, wherein, The first voltage is 12V-14V, and the second voltage is 5V-48V.

4. The energy storage power supply circuit of claim 1, wherein, The charging input voltage of the charge-discharge interface is 9V-60V, and the charging input current of the charge-discharge interface is 5A-10A.

5. The energy storage power supply circuit of claim 1, wherein, The application further comprises a display screen, which is in communication connection with the microcontroller and is used for displaying the first voltage and the second voltage output by the bidirectional DC-DC circuit.

6. The energy storage power supply circuit of claim 1, wherein, The application further comprises a key, which is connected with the microcontroller and is used for controlling the microcontroller to generate the enabling signal.

7. The energy storage power supply circuit of claim 2, wherein, The application further comprises a voltage acquisition circuit, which is connected with the microcontroller, the bidirectional DC-DC circuit and the charge-discharge interface, and the microcontroller is used for enabling the bidirectional DC-DC circuit through the voltage acquisition circuit to obtain a ready-to-charge state.

8. The energy storage power supply circuit of claim 7, wherein, The battery module is connected with the microcontroller and is also used for providing power supply for the microcontroller and the bidirectional DC-DC circuit.

9. The energy storage power supply circuit of claim 8, wherein, The application further comprises a power supply circuit, which is connected with the microcontroller, the battery module, the voltage acquisition circuit and the charge-discharge interface, and the power supply circuit is used for converting the voltage of the battery module into a preset voltage and supplying power for the microcontroller when the bidirectional DC-DC circuit is in a discharging state; the power supply circuit is also used for obtaining a second voltage of external charging input through the charge-discharge interface and supplying power for the microcontroller when the bidirectional DC-DC circuit is in a charging state or a closed state or when the whole portable energy storage device is in a shutdown state.

10. An energy storage power supply, characterized by, The application further comprises the energy storage power supply circuit according to any one of claims 1-9.

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