Energy storage power supply
By adopting current limiting voltage and current current limiting circuits in energy storage power supply, combined with a bidirectional charge and discharge step-up control chip, the problems of current mismatch and voltage instability in the charging and discharging process of energy storage power supply are solved, achieving high efficiency , stable energy storage power output ensures the normal operation of the cigarette lighter and improves the reliability and energy-saving performance of the power supply.
Patent Information
- Application Number
- CN202420710279.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-08
AI Technical Summary
During the charging and discharging process, existing energy storage power supplies have problems such as current mismatch, voltage instability and fuse breakdown, resulting in increased battery loss and inability to work properly by the cigarette lighter.
An energy storage power supply is designed, including a MUC main control chip, a charging module, a discharge module and a cigarette lighter module, and a current limiting circuit is adopted, and is composed of a USB charging management chip, a MOS tube and an inductor capacitor. Achieve stable charging and prevent overcurrent, combine the bidirectional charge and discharge boost and buck control chip for solar charging, improving charging efficiency and stability.
The stability of the charging current and the stability of the output voltage are achieved, which prevents the output of the cigarette lighter from being overcurrent, improves the reliability and energy-saving performance of the energy storage power supply, and ensures the normal operation of the cigarette lighter.
Smart Images
Figure CN222147197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage power supply, in particular to an energy storage circuit capable of realizing multi-channel output, bidirectional charging and discharging energy storage, current limiting and voltage stabilizing protection. Background Art
[0002] With the development of energy storage technology, energy storage power supplies have broad application prospects, such as electronic products, automobiles, mechanical equipment and other fields. However, most energy storage power supplies only output the corresponding charging current according to the current demand value issued by the battery management system. As the battery ages, the mismatch between the charging and discharging currents received by the battery leads to accelerated battery loss and increased electricity costs. In addition, the cigarette lighter output often causes fuse breakdown due to excessive output current and unstable voltage, and the cigarette lighter cannot work. Patent CN110323810A discloses an energy storage power supply system and its charge and discharge control method. Although the scheme limits the derating coefficient of the energy storage battery, when the temperature and coefficient deviate, the charge and discharge of the energy storage battery will change, and there are problems such as unstable discharge and single charging method.
[0003] In addition, patent CN205355965U discloses a portable energy storage box, which uses a charging module to connect to a cigarette lighter and a USB module to a fuse. Although this can achieve a certain circuit protection effect, when the battery current output is too large, the fuse is easily broken, causing the cigarette lighter to fail to output normally. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an energy storage power supply that can perform solar energy charging and discharging, has fast charging efficiency, is more energy-saving, reliable, has higher output stability, can prevent cigarette lighter output overcurrent, ensure that the cigarette lighter can work normally, and can stabilize the charging circuit, limit the current, and improve the working stability of the charging circuit.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: an energy storage power supply, the energy storage power supply includes a power supply housing and an energy storage power supply control board built into the power supply housing, the back cover of the power supply housing is provided with a plurality of USB interfaces, the plurality of USB interfaces are spaced apart from each other, the energy storage power supply control board includes a MUC main control chip U5, a charging module, a discharging module, and a cigarette lighter module, the charging module, the discharging module, and the cigarette lighter module are electrically connected to the MCU main control module in sequence; the model of the MUC main control chip U5 is HK32F030K6T6; the discharging module includes a first USB output circuit, a current limiting voltage stabilizing circuit, a voltage stabilizing output circuit, a charging protocol The processing circuit, the current limiting and voltage stabilizing circuit, the voltage stabilizing output circuit, and the charging protocol processing circuit are all electrically connected to the first USB output circuit; the first USB output circuit includes a USB charging management chip U12, a TYPE-C interface chip USB4, a MOS tube Q16, a MOS tube Q17, an inductor L7, a capacitor C100, and a capacitor C99. The model of the USB charging management chip U12 is SC8002QDKR, and the models of the MOS tube Q16 and the MOS tube Q17 are both NCEP40T17AG. The first pin of the USB charging management chip U12 is a charging start signal pin, and the first pin of the USB charging management chip U12 is a charging start signal pin. The USB charging management chip U12 is electrically connected to the MOS tube Q16 and the MOS tube Q17 through its 12th pin. The gate S pin of the MOS tube Q16 and the drain D pin of the MOS tube Q17 are electrically connected to one end of the inductor L7. The capacitor C100 and the capacitor C99 are connected in parallel and electrically connected to the other end of the inductor L7. The current limiting and voltage stabilizing circuit includes a resistor R65, a resistor R75, and a resistor R6. The resistor R65, the resistor R75, and the resistor R6 are electrically connected to the MOS tube Q17 of the first USB output circuit to form a current limiting and voltage stabilizing circuit. The cigarette lighter module includes a cigarette lighter voltage feedback circuit and a current limiting The cigarette lighter voltage feedback circuit is electrically connected to the current limiting circuit; the cigarette lighter voltage feedback circuit includes a bidirectional charge and discharge control chip U1, a MOS tube Q1, a MOS tube Q2, an inductor L1, a capacitor C4, a capacitor C5, a cigarette lighter interface CN1, and a cigarette lighter interface CN3. The bidirectional charge and discharge control chip U1 is of model SC8002QDKR. The 15th pin of the bidirectional charge and discharge control chip U1 is electrically connected to the MOS tube Q1 and the MOS tube Q2. The gate S pin of the MOS tube Q1 and the drain D pin of the MOS tube Q2 are electrically connected to one end of the inductor L1. The capacitor C4 and the capacitor C5 are electrically connected to the other end of the inductor L1 after being connected in parallel.The current limiting circuit includes a resistor R3, a resistor R4, and a resistor R74. The resistor R4 is connected in parallel with the resistor R3 and is electrically connected to the resistor R74. The current limiting circuit is electrically connected to the cigarette lighter interface CN3 through the resistor R4. The current limiting circuit is electrically connected to the gate S pin of the MOS tube Q2 through the resistor R3 to form a current limiting circuit. ;
[0006] Preferably, the voltage-stabilized output circuit includes a resistor R123, a resistor R125, a capacitor C52, and a capacitor C109, and the USB charging management chip U12 is electrically connected to one end of the resistor R123, the resistor R125, the capacitor C52, and the capacitor C109 through its 9th pin to realize the electrical connection between the USB charging management chip U12 and the voltage-stabilized output circuit.
[0007] Preferably, the charging protocol processing circuit includes a charging protocol processing chip U13, a capacitor C7, and a capacitor C107. The first pin of the charging protocol processing chip U13 is electrically connected to the capacitor C7 and the capacitor C107. The charging protocol processing chip U13 is electrically connected to the USB charging management chip U12 through its second pin.
[0008] Preferably, the discharge module includes a second USB output circuit and a filtering circuit. The second USB output circuit includes a USB charging management chip U3, a TYPE-C interface USB3, a socket USB1, an inductor L3, a capacitor C39, a capacitor C40, and a capacitor C41. The USB charging management chip U3 is a dual-interface charging chip model IP6536. The USB charging management chip U3 is electrically connected to one end of the inductor L3 through its 7th pin, and the capacitor C39, the capacitor C40, and the capacitor C41 are electrically connected to the other end of the inductor L3 in parallel. The socket USB1 is electrically connected to the TYPE-C interface USB3 and the USB charging management chip U3 through its VCC pin. The filtering circuit is electrically connected to the 1st pin of the charging management chip U3 by capacitors C42 and C46 in parallel.
[0009] Preferably, the discharge module includes a third USB output circuit and a filtering circuit. The third USB output circuit includes a USB charging management chip U4, a socket USB2, an inductor L4, a capacitor C44, and a capacitor C48. The model of the USB charging management chip U4 is IP6525T. The second pin of the USB charging management chip U4 is electrically connected to one end of the inductor L4. The capacitor C44 and the capacitor C48 are electrically connected to the other end of the inductor L4 in parallel. The filtering circuit includes a capacitor C38 and a capacitor C47. The capacitor C38 and the capacitor C47 are electrically connected to the seventh pin of the charging management chip U4 in parallel.
[0010] Preferably, the charging module includes a solar charging circuit, which includes a bidirectional charging and discharging buck-boost control chip U2, a MOS tube Q3, a MOS tube Q4, a MOS tube Q5, a MOS tube Q6, an inductor L2, a capacitor C16, a capacitor C18, a capacitor C20, a capacitor C17, a capacitor C19, and a capacitor C21. The model of the bidirectional charging and discharging buck-boost control chip U2 is SC8802QDER, and the models of the MOS tubes Q3, Q4, Q5, and Q6 are all NCEP018N60GU. The bidirectional charging and discharging buck-boost control chip U2 is electrically connected to the MOS tubes Q3 and Q5 through their 26th and 28th pins, and the gate of the MOS tube Q3 is electrically connected to the MOS tube Q3. The S pin and the drain D pin of the MOS tube Q5 are electrically connected to one end of the inductor L2. The capacitors C16, C18 and C20 are electrically connected to the resistors R8 and R21 in parallel. The resistors R8 and R21 are electrically connected to the drain D pin of the MOS tube Q3. The bidirectional charge and discharge buck-boost control chip U2 is electrically connected to the MOS tubes Q4 and Q6 through its 21st and 23rd pins. The gate S pin of the MOS tube Q4 and the drain D pin of the MOS tube Q6 are electrically connected to the other end of the inductor L2. The capacitors C17, C19 and C21 are electrically connected to the resistors R15 and R22 in parallel. The resistors R15 and R22 are electrically connected to the drain D pin of the MOS tube Q4.
[0011] Preferably, the energy storage power supply control board includes a photovoltaic charging current detection module, which is electrically connected to the MCU main control module. The photovoltaic charging current detection module includes a fixed gain amplifier U11, a current sampling resistor R102, a resistor R98, a resistor R104, a resistor R101, a capacitor C93, a capacitor C94, and a capacitor C95. The current sampling resistor R102 is electrically connected to the resistor R98 and the resistor R104, and the capacitor C93 is electrically connected to the resistor R98 and the resistor R104. The third and fourth pins of the fixed gain amplifier U11 are electrically connected to the capacitor C93, and the capacitors C94 and C95 are electrically connected in parallel to the first pin of the fixed gain amplifier U11.
[0012] Preferably, the energy storage power supply control board includes an LCD display driver module, the LCD display driver module is electrically connected to the MCU main control module, the LCD display driver module includes an LCD display screen, an LCD display screen driver chip IC1, a capacitor C59, and a capacitor C60. The model of the LCD display screen driver chip IC1 is HT1621B, and the LCD display screen driver chip is electrically connected to the LCD display screen.
[0013] Preferably, the rear cover of the power supply housing is provided with a plurality of USB interfaces, and the plurality of USB interfaces are spaced apart from each other.
[0014] Beneficial effects of the utility model:
[0015] (1) The energy storage power supply control board of the utility model includes a MUC main control chip U5, a charging module, a discharging module, and a cigarette lighter module. The charging module, the discharging module, and the cigarette lighter module are electrically connected to the MCU main control module in sequence. The discharging module includes a first USB output circuit, a current limiting and voltage stabilizing circuit, a voltage stabilizing output circuit, and a charging protocol processing circuit. The current limiting and voltage stabilizing circuit, the voltage stabilizing output circuit, and the charging protocol processing circuit are all electrically connected to the first USB output circuit; the first USB output circuit includes a USB charging management chip U12, a TYPE -C interface chip USB4, MOS tube Q16, MOS tube Q17, inductor L7, capacitor C100, capacitor C99, the current limiting and voltage stabilizing circuit includes resistor R65, resistor R75, resistor R6, the resistor R65, and the resistor R75, and the resistor R6 are electrically connected to the MOS tube Q17 of the first USB output circuit to form a current limiting and voltage stabilizing circuit, the cigarette lighter module includes a cigarette lighter voltage feedback circuit and a current limiting circuit, and the utility model can stabilize the charging current and improve the charging stability by setting the current limiting and voltage stabilizing circuit. The energy storage power supply control board of the utility model can perform current limiting and voltage stabilizing protection on the cigarette lighter circuit through the current limiting circuit, and has the advantages of fast charging efficiency, strong reliability, higher output stability, and energy saving.
[0016] (2) The charging module described in the utility model can be charged and replaced by a solar charging circuit. The solar charging circuit includes a bidirectional charging and discharging buck-boost control chip U2, MOS tube Q3, MOS tube Q4, MOS tube Q5, MOS tube Q6, inductor L2, capacitor C16, capacitor C18, capacitor C20, capacitor C17, capacitor C19, and capacitor C21. The utility model configures the photovoltaic signal to form a buck-boost circuit to charge the battery through the bidirectional charging and discharging buck-boost chip. Charging through solar energy saves more energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the energy storage power supply of the utility model;
[0018] Figure 2 This is a schematic diagram of the exploded structure of the energy storage power supply of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the energy storage power supply housing of the utility model;
[0020] Figure 4 This is a circuit diagram of the MCU main control module of the utility model;
[0021] Figure 5This is a circuit diagram of the cigarette lighter module of the utility model;
[0022] Figure 6 This is a circuit diagram of the first USB output circuit in the discharge module of the utility model;
[0023] Figure 7 This is a circuit diagram of the second USB output circuit in the discharge module of the utility model;
[0024] Figure 8 This is a circuit diagram of the third USB output circuit in the discharge module of the utility model;
[0025] Fig. 9 This is a circuit diagram of a solar charging circuit in a charging module of the utility model;
[0026] Fig.10 This is a circuit diagram of the LCD display module of the utility model;
[0027] Fig.11 This is a circuit diagram of the photovoltaic charging current detection module of the utility model.
[0028] The symbols in the figure are:
[0029] 1 is the energy storage power supply, 2 is the energy storage power supply control board, and 3 is the USB interface. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] like Figure 1-11As shown, in this embodiment, the utility model provides an energy storage power supply 1, the energy storage power supply 1 includes a power supply housing and an energy storage power supply control board 2 built into the power supply housing, the back cover of the power supply housing is provided with a plurality of USB interfaces 3, and the plurality of USB interfaces 3 are spaced apart from each other, the energy storage power supply control board 2 includes a MUC main control chip U5, a charging module, a discharging module, and a cigarette lighter module, and the charging module, the discharging module, and the cigarette lighter module are electrically connected to the MCU main control module in sequence; the model of the MUC main control chip U5 is HK32F030K6T6; the discharging module includes a first USB output circuit, a current limiting voltage stabilizing circuit, a voltage stabilizing output circuit, a charging protocol The processing circuit, the current limiting and voltage stabilizing circuit, the voltage stabilizing output circuit, and the charging protocol processing circuit are all electrically connected to the first USB output circuit; the first USB output circuit includes a USB charging management chip U12, a TYPE-C interface chip USB4, a MOS tube Q16, a MOS tube Q17, an inductor L7, a capacitor C100, and a capacitor C99. The model of the USB charging management chip U12 is SC8002QDKR, and the models of the MOS tube Q16 and the MOS tube Q17 are both NCEP40T17AG. The first pin of the USB charging management chip U12 is a charging start signal pin, and the first pin of the USB charging management chip U12 is a charging start signal pin. The USB charging management chip U12 is electrically connected to the MOS tube Q16 and the MOS tube Q17 through its 12th pin. The gate S pin of the MOS tube Q16 and the drain D pin of the MOS tube Q17 are electrically connected to one end of the inductor L7. The capacitor C100 and the capacitor C99 are connected in parallel and electrically connected to the other end of the inductor L7. The current limiting and voltage stabilizing circuit includes a resistor R65, a resistor R75, and a resistor R6. The resistor R65, the resistor R75, and the resistor R6 are electrically connected to the MOS tube Q17 of the first USB output circuit to form a current limiting and voltage stabilizing circuit. The cigarette lighter module includes a cigarette lighter voltage feedback circuit and a current limiting The cigarette lighter voltage feedback circuit is electrically connected to the current limiting circuit; the cigarette lighter voltage feedback circuit includes a bidirectional charge and discharge control chip U1, a MOS tube Q1, a MOS tube Q2, an inductor L1, a capacitor C4, a capacitor C5, a cigarette lighter interface CN1, and a cigarette lighter interface CN3. The bidirectional charge and discharge control chip U1 is of model SC8002QDKR. The 15th pin of the bidirectional charge and discharge control chip U1 is electrically connected to the MOS tube Q1 and the MOS tube Q2. The gate S pin of the MOS tube Q1 and the drain D pin of the MOS tube Q2 are electrically connected to one end of the inductor L1. The capacitor C4 and the capacitor C5 are electrically connected to the other end of the inductor L1 after being connected in parallel.The current limiting circuit includes a resistor R3, a resistor R4, and a resistor R74. The resistor R4 is connected in parallel with the resistor R3 and is electrically connected to the resistor R74. The current limiting circuit is electrically connected to the cigarette lighter interface CN3 through the resistor R4. The current limiting circuit is electrically connected to the gate S pin of the MOS tube Q2 through the resistor R3 to form a current limiting circuit. ;
[0032] When the first pin of the USB charging management chip U12 receives the start signal USB+, it outputs two upper and lower complementary PWM signals HD and LD to drive the MOS tubes Q16 and Q17 to work. The USB+ voltage signal is chopped by the MOS tubes Q16 and Q17 to obtain the SW1 signal. The SW1 signal is stored by the inductor L7 and filtered by the capacitors C100 and C99 to output the charging voltage VOUT. The charging voltage VOUT is divided by the resistors R123 and R125 of the voltage stabilizing output circuit, and is filtered by the capacitors C52 and C109 and fed back to the 9th pin of the USB charging management chip U12 for voltage stabilization detection, so as to form a voltage stabilizing output circuit with the USB charging management chip U12. The resistors R65, R75 and R6 are electrically connected to the USB charging management chip U12 through the MOS tube Q17 to form a current limiting voltage stabilizing circuit to stabilize the charging current.
[0033] The battery voltage BAT+ of the battery charging circuit is transmitted to the MOS tube Q1 and the bidirectional charge and discharge control chip U1 for power supply. The bidirectional charge and discharge control chip U1 outputs a PWM signal to drive the MOS tubes Q1 and Q2 to chop the BAT+ electrical signal. Then, the MOS tubes Q1 and Q2 output SWD signals to store energy in the inductor L1. The voltage stored in the inductor L1 is filtered by the capacitors C5 and C4 and then transmitted to the cigarette lighter interface CN3. The resistor R17, the resistor R20, the capacitor C1, and the capacitor C14 form a cigarette lighter voltage feedback circuit, which controls the output voltage regulation with the internal circuit of the bidirectional charge and discharge control chip U1. The resistor R3, the resistor R4, and the resistor R74 form a current limiting circuit to provide a constant current loop with the internal circuit of the bidirectional charge and discharge control chip U1 to prevent overcurrent output beyond the cigarette lighter point.
[0034] The discharge module of the utility model includes a charging protocol processing circuit. The model of the charging protocol processing chip U13 is CX2965C. The first pin of the charging protocol processing chip U13 receives a charging voltage VOUT signal, which is filtered by capacitors C7 and C107 and then fed back to output to obtain an FB signal. The FB signal is input to the USB charging management chip, and the USB charging management chip U12 is fed back to control the output voltage to meet the charging demand.
[0035] The discharge module of the utility model includes a second USB output circuit, which includes a USB charging management chip U3, a TYPE-C interface chip USB3, a socket USB1, an inductor L3, a capacitor C39, a capacitor C40, and a capacitor C41. The USB charging management chip U3 is a dual-interface charging chip model IP6536. The USB charging management chip U3 is electrically connected to one end of the inductor L3 through its 7th pin, and the capacitor C39, the capacitor C40, and the capacitor C41 are electrically connected to the other end of the inductor L3 in parallel. The socket USB1 is electrically connected to the TYPE-C interface chip USB3 and the USB charging management chip U3 through its VCC pin. The filter circuit is electrically connected to the 1st pin of the charging management chip U3 by capacitors C42 and C46 in parallel. When the first pin of the USB charging management chip U3 receives the start signal USB+, it is filtered by capacitors C42 and C46, and then outputs a PWM signal through its seventh pin. The signal is stored in the inductor L3, filtered by capacitors C39, C40, and C41, and then a 5V voltage is obtained, which is then transmitted to the TYPE-C interface USB3.
[0036] The discharge module of the utility model includes a third USB output circuit and a filtering circuit. The third USB output circuit includes a USB charging management chip U4, a socket USB2, an inductor L4, a capacitor C44, and a capacitor C48. The model of the USB charging management chip U4 is IP6525T. The second pin of the USB charging management chip U4 is electrically connected to one end of the inductor L4. The capacitor C44 and the capacitor C48 are electrically connected to the other end of the inductor L4 after being connected in parallel. The filtering circuit includes a capacitor C38 and a capacitor C47. The capacitor C38 and the capacitor C47 are electrically connected to the seventh pin of the charging management chip U4 after being connected in parallel.
[0037] The 7th pin of the USB charging management chip U4 receives the start signal USB+, which is filtered by capacitors C38 and C47, and then outputs the PWM signal through its 2nd pin. The signal is stored in the inductor L4, filtered by capacitors C44 and C48, and then transmitted to the USB2 interface of the socket. The USB2 interface changes the output voltage according to the charging protocol fed back by the DM1 and DP1 signals.
[0038] The charging module of the utility model includes a solar charging circuit, which includes a bidirectional charging and discharging buck-boost control chip U2, a MOS tube Q3, a MOS tube Q4, a MOS tube Q5, a MOS tube Q6, an inductor L2, a capacitor C16, a capacitor C18, a capacitor C20, a capacitor C17, a capacitor C19, and a capacitor C21. The bidirectional charging and discharging buck-boost control chip U2 is of model SC8802QDER, and the models of the MOS tubes Q3, Q4, Q5, and Q6 are all NCEP018N60GU. The bidirectional charging and discharging buck-boost control chip U2 is electrically connected to the MOS tubes Q3 and Q5 through their 26th and 28th pins, and the gate of the MOS tube Q3 is electrically connected to the gate of the MOS tube Q5. The S pin and the drain D pin of the MOS tube Q5 are electrically connected to one end of the inductor L2. The capacitors C16, C18 and C20 are electrically connected to the resistors R8 and R21 in parallel. The resistors R8 and R21 are electrically connected to the drain D pin of the MOS tube Q3. The bidirectional charge and discharge buck-boost control chip U2 is electrically connected to the MOS tubes Q4 and Q6 through its 21st and 23rd pins. The gate S pin of the MOS tube Q4 and the drain D pin of the MOS tube Q6 are electrically connected to the other end of the inductor L2. The capacitors C17, C19 and C21 are electrically connected to the resistors R15 and R22 in parallel. The resistors R15 and R22 are electrically connected to the drain D pin of the MOS tube Q4.
[0039] In specific implementation, the photovoltaic signal in the solar charging circuit is input from CN2, filtered by capacitors C16, C18, and C20, and then sampled by resistors R8 and R21 before being transmitted to MOS tube Q3. The bidirectional charge and discharge buck-boost control chip U2 outputs two PWM drive signals LD and HD through its 26th and 28th pins to control MOS tubes Q3 and Q5 to chop the photovoltaic signal, and the SW1 signal is obtained and then stored in the inductor L2 to output the SW2 signal. The SW2 signal is sampled by MOS tubes Q4, Q6, resistors R22, and R15 for charging current, and then filtered by capacitors C17, C19, and C21 to charge the battery. At the same time, the bidirectional charge and discharge buck-boost control chip U2 has a buck-boost function, which automatically forms a buck-boost circuit with MOS tubes Q3, Q4, Q5, Q6, and inductor L2 according to different photovoltaic signals to charge the battery.
[0040] The energy storage power supply control board 2 of the utility model includes a photovoltaic charging current detection module, which is electrically connected to the MCU main control module. The photovoltaic charging current detection module includes a fixed gain amplifier U11, a current sampling resistor R102, a resistor R98, a resistor R104, a resistor R101, a capacitor C93, a capacitor C94, and a capacitor C95. The current sampling resistor R102 is electrically connected to the resistor R98 and the resistor R104, and the capacitor C93 is electrically connected to the resistor R98 and the resistor R104. The third and fourth pins of the fixed gain amplifier U11 are electrically connected to the capacitor C93, and the capacitors C94 and C95 are electrically connected in parallel to the first pin of the fixed gain amplifier U11.
[0041] When the photovoltaic charging current sampling resistor R102 transmits the sampled current signal "+" and "-" ends to the fixed gain amplifier U11 through resistors R98 and R104, it is amplified and filtered by resistors R101, capacitors C94 and C95 to output the ADC-PV-I signal, which is then transmitted to the MCU main control chip U5 for photovoltaic charging current detection.
[0042] The energy storage power supply control board 2 of the utility model includes an LCD display driver module, the LCD display driver module is electrically connected to the MCU main control module, the LCD display driver module includes an LCD display screen, an LCD display driver chip IC1, a capacitor C59, and a capacitor C60, the model of the LCD display driver chip IC1 is HT1621B, and the LCD display driver chip is electrically connected to the LCD display screen. The LCD display driver screen is a segment code screen, which is equivalent to one segment as one LCD lamp. The LCD display driver chip drives the corresponding segment of the LCD display screen to light up through the BAT+ signal, backlight signal, +5V signal, CS signal, WR signal, DATA signal, and VLCD signal transmitted by the MCU main control chip U5.
[0043] The present invention has been described in detail above. The above description is only the preferred working process of the present invention and cannot limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the scope of this application should still fall within the scope of the present invention.
Claims
1. An energy storage power supply, characterized in that: The energy storage power supply includes a power supply housing and an energy storage power supply control board built into the power supply housing, the energy storage power supply control board includes a MUC main control chip U5, a charging module, a discharging module, and a cigarette lighter module, and the charging module, the discharging module, and the cigarette lighter module are electrically connected to the MCU main control module in sequence; the model of the MUC main control chip U5 is HK32F030K6T6; the discharging module includes a first USB output circuit, a current limiting and voltage stabilizing circuit, a voltage stabilizing output circuit, and a charging protocol processing circuit, and the current limiting and voltage stabilizing circuit, the voltage stabilizing output circuit, and the charging protocol processing circuit are all electrically connected to the first USB output circuit; the first USB output circuit includes a USB Charging management chip U12, TYPE-C interface chip USB4, MOS tube Q16, MOS tube Q17, inductor L7, capacitor C100, capacitor C99, the model of the USB charging management chip U12 is SC8002QDKR, the first pin of the USB charging management chip U12 is electrically connected to the resistor R12, the USB charging management chip U12 is electrically connected to the MOS tube Q16 and the MOS tube Q17 through its 12th pin, the gate S pin of the MOS tube Q16 and the drain D pin of the MOS tube Q17 are electrically connected to one end of the inductor L7, and the capacitor C100 and the capacitor C99 are electrically connected to the other end of the inductor L7 in parallel. ; The current limiting and voltage stabilizing circuit includes a resistor R65, a resistor R75, and a resistor R6. The resistor R65, the resistor R75, and the resistor R6 are electrically connected to the MOS tube Q17 of the first USB output circuit to form a current limiting and voltage stabilizing circuit; The cigarette lighter module includes a cigarette lighter voltage feedback circuit and a current limiting circuit. The cigarette lighter voltage feedback circuit is electrically connected to the current limiting circuit; The cigarette lighter voltage feedback circuit includes a bidirectional charge and discharge control chip U1, a MOS tube Q1, a MOS tube Q2, an inductor L1, a capacitor C4, a capacitor C5, a cigarette lighter interface CN1, and a cigarette lighter interface CN3. The model of the bidirectional charge and discharge control chip U1 is SC800. 2QDKR, the 15th pin of the bidirectional charge and discharge control chip U1 is electrically connected to the MOS tube Q1 and the MOS tube Q2, the gate S pin of the MOS tube Q1 and the drain D pin of the MOS tube Q2 are electrically connected to one end of the inductor L1, and the capacitor C4 and the capacitor C5 are electrically connected to the other end of the inductor L1 after being connected in parallel; the current limiting circuit includes a resistor R3, a resistor R4, and a resistor R74, and the resistor R4 is electrically connected to the resistor R74 after being connected in parallel with the resistor R3, and the current limiting circuit is electrically connected to the cigarette lighter interface CN3 through the resistor R4, and the current limiting circuit is electrically connected to the gate S pin of the MOS tube Q2 through the resistor R3 to form a current limiting circuit.
2. An energy storage power supply according to claim 1, characterized in that: The voltage-stabilized output circuit includes a resistor R123, a resistor R125, a capacitor C52, and a capacitor C109. The USB charging management chip U12 is electrically connected to one end of the resistor R123, the resistor R125, the capacitor C52, and the capacitor C109 through its 9th pin to achieve electrical connection between the USB charging management chip U12 and the voltage-stabilized output circuit.
3. The energy storage power supply according to claim 1, characterized in that: The charging protocol processing circuit includes a charging protocol processing chip U13, a capacitor C7, and a capacitor C107. The first pin of the charging protocol processing chip U13 is electrically connected to the capacitor C7 and the capacitor C107. The charging protocol processing chip U13 is electrically connected to the USB charging management chip U12 through its second pin.
4. The energy storage power supply according to claim 1, characterized in that: The discharge module includes a second USB output circuit and a filtering circuit. The second USB output circuit includes a USB charging management chip U3, a TYPE-C interface chip USB3, a socket USB1, an inductor L3, a capacitor C39, a capacitor C40, and a capacitor C41. The USB charging management chip U3 is a dual-interface charging chip model IP6536. The USB charging management chip U3 is electrically connected to one end of the inductor L3 through its 7th pin. The capacitors C39, C40, and C41 are electrically connected in parallel to the other end of the inductor L3. The socket USB1 is electrically connected to the TYPE-C interface chip USB3 and the USB charging management chip U3 through its VCC pin. The filtering circuit is electrically connected to the 1st pin of the charging management chip U3 by capacitors C42 and C46 in parallel.
5. The energy storage power supply according to claim 1, characterized in that: The discharge module includes a third USB output circuit and a filtering circuit. The third USB output circuit includes a USB charging management chip U4, a socket USB2, an inductor L4, a capacitor C44, and a capacitor C48. The model of the USB charging management chip U4 is IP6525T. The second pin of the USB charging management chip U4 is electrically connected to one end of the inductor L4. The capacitor C44 and the capacitor C48 are electrically connected to the other end of the inductor L4 in parallel. The filtering circuit includes a capacitor C38 and a capacitor C47. The capacitor C38 and the capacitor C47 are electrically connected to the seventh pin of the charging management chip U4 in parallel.
6. The energy storage power supply according to claim 1, characterized in that: The charging module includes a solar charging circuit, which includes a bidirectional charging and discharging buck-boost control chip U2, a MOS tube Q3, a MOS tube Q4, a MOS tube Q5, a MOS tube Q6, an inductor L2, a capacitor C16, a capacitor C18, a capacitor C20, a capacitor C17, a capacitor C19, and a capacitor C21. The bidirectional charging and discharging buck-boost control chip U2 is of model SC8802QDER, and the models of the MOS tubes Q3, Q4, Q5, and Q6 are all NCEP018N60GU. The bidirectional charging and discharging buck-boost control chip U2 is electrically connected to the MOS tubes Q3 and Q5 through their 26th and 28th pins, and the gate S of the MOS tube Q3 is connected to the gate S of the MOS tube Q3. The gate S pin of the MOS tube Q4 and the drain D pin of the MOS tube Q6 are electrically connected to the other end of the inductor L2. The capacitors C17, C19 and C21 are electrically connected to the resistors R15 and R22 after being connected in parallel. The resistors R8 and R21 are electrically connected to the drain D pin of the MOS tube Q3. The bidirectional charge and discharge buck-boost control chip U2 is electrically connected to the MOS tubes Q4 and Q6 through its 21st and 23rd pins. The gate S pin of the MOS tube Q4 and the drain D pin of the MOS tube Q6 are electrically connected to the other end of the inductor L2. The capacitors C17, C19 and C21 are electrically connected to the resistors R15 and R22 after being connected in parallel. The resistors R15 and R22 are electrically connected to the drain D pin of the MOS tube Q4.
7. The energy storage power supply according to claim 1, characterized in that: The energy storage power supply control board includes a photovoltaic charging current detection module, which is electrically connected to the MCU main control module. The photovoltaic charging current detection module includes a fixed gain amplifier U11, a current sampling resistor R102, a resistor R98, a resistor R104, a resistor R101, a capacitor C93, a capacitor C94, and a capacitor C95. The current sampling resistor R102 is electrically connected to the resistor R98 and the resistor R104, and the capacitor C93 is electrically connected to the resistor R98 and the resistor R104. The third and fourth pins of the fixed gain amplifier U11 are electrically connected to the capacitor C93, and the capacitors C94 and C95 are electrically connected in parallel to the first pin of the fixed gain amplifier U11.
8. The energy storage power supply according to claim 1, characterized in that: The energy storage power supply control board includes an LCD display driver module, which is electrically connected to the MCU main control module. The LCD display driver module includes an LCD display screen, an LCD display screen driver chip IC1, a capacitor C59, and a capacitor C60. The model of the LCD display screen driver chip IC1 is HT1621B, and the LCD display screen driver chip is electrically connected to the LCD display screen.
9. The energy storage power supply according to claim 1, characterized in that: The rear cover of the power supply housing is provided with a plurality of USB interfaces, and the plurality of USB interfaces are distributed at intervals from each other.