Energy storage power supply and control method thereof

Abstract

The invention discloses an energy storage power supply and a control method thereof. The energy storage power supply comprises a battery module, a switch control module, a main control module and a voltage conversion module, the switch control module comprises a first switch circuit and a second switch circuit. The first switch circuit comprises a first switch control circuit and a first switch unit. The second switch circuit comprises a second switch control circuit and a second switch unit; the first switch control circuit responds to a first power-on request sent by the main control module to control the first switch unit to be closed, and the battery module supplies power to the main control module and the voltage conversion module through the first switch unit, so that the main control module is powered on; after the main control module is powered on, the second switch control circuit responds to a power supply request sent by the main control module to control the second switch unit to be closed, and the battery module supplies power to the voltage conversion module through the second switch unit. According to the technical scheme, the power-on speed of the whole machine system can be increased, and the cost of the energy storage power supply is reduced.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to an energy storage power supply and its control method. Background Art

[0002] Currently, portable energy storage power supplies typically consist of a battery management system (BMS), a voltage conversion module, and a main control module.

[0003] In existing technologies, when the entire system is powered on, the BMS is typically woken up by a power button. After the BMS powers on, it controls the battery module of the portable energy storage power supply to pre-charge the voltage conversion module and the main control module. Only after pre-charging is complete can the BMS send a wake-up signal to power on the main control module, thus completing the overall power-on process. It is understandable that since the main control module consumes power when it is operating, it cannot be powered on during the pre-charging process of the voltage conversion module and the main control module to prevent pre-charging failure. The aforementioned portable energy storage power supply has a relatively long power-on time, which cannot meet the needs of scenarios requiring rapid power-on. Summary of the Invention

[0004] This invention provides an energy storage power supply and its control method to solve the problems existing in the prior art, improve the power-on speed of the whole system, and reduce the cost of the energy storage power supply.

[0005] In a first aspect, the present invention provides an energy storage power supply, comprising: a battery module, a switch control module, a main control module, and a voltage conversion module;

[0006] The main control module and the voltage conversion module are electrically connected to the battery module through the switch control module;

[0007] The switch control module includes a first switch circuit and a second switch circuit. The first switch circuit includes a first switch control circuit and a first switch unit. The second switch circuit includes a second switch control circuit and a second switch unit. The first switch control circuit is electrically connected to the first switch unit, and the second switch control circuit is electrically connected to the second switch unit. The battery module is electrically connected to the main control module and the voltage conversion module through the first switch unit or the second switch unit, respectively. The current when the first switch unit is turned on is less than the current when the second switch unit is turned on.

[0008] The first switch control circuit responds to the first power-on request sent by the main control module and controls the first switch unit to close. The battery module supplies power to the main control module and the voltage conversion module through the first switch unit, so as to power on the main control module. After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close. The battery module supplies power to the voltage conversion module through the second switch unit.

[0009] Optionally, the main control module includes a switch signal transmitting unit; the switch signal transmitting unit is electrically connected to the first switch control circuit.

[0010] The switch signal sending unit is used to send a first power-on request to the first switch control circuit.

[0011] Optionally, the main control module includes a switch signal transmitting unit and a microcontroller unit; the switch signal transmitting unit is electrically connected to the microcontroller unit; the microcontroller unit is also electrically connected to the first switch control circuit;

[0012] The switch signal sending unit is used to send a first power-on request to the microcontroller unit; the microcontroller unit is used to respond to the first power-on request and send a second power-on request to the first switch control circuit.

[0013] Optionally, the main control module includes a first power supply unit and a microcontroller unit; the first power supply unit and the microcontroller unit are electrically connected.

[0014] When the first switching unit is turned on, the battery module provides an output power signal to the first power supply unit; the first power supply unit provides a first power signal to the microcontroller unit according to the output power signal, so as to power on the microcontroller unit.

[0015] Optionally, the main control module includes a first power supply unit and a microcontroller unit; the voltage conversion module includes a charging port and an auxiliary power supply unit.

[0016] The charging port is electrically connected to the auxiliary power supply unit, and the auxiliary power supply unit is electrically connected to the first power supply unit; the auxiliary power supply unit is used to provide an auxiliary power signal to the first power supply unit in response to the input signal of the charging port.

[0017] The first power supply unit and the microcontroller unit are electrically connected; the first power supply unit provides a first power signal to the microcontroller unit according to the auxiliary power signal, so as to power on the microcontroller unit.

[0018] Optionally, the voltage conversion module includes: an AC-DC module and / or a DC-DC module;

[0019] The input port is electrically connected to the auxiliary power supply unit via the AC-DC module and / or the DC-DC module.

[0020] Optionally, the switch control module may further include an analog front-end chip;

[0021] The microcontroller unit is electrically connected to the analog front-end chip; the microcontroller unit sends a wake-up signal to the analog front-end chip when powered on.

[0022] Optionally, when the microcontroller receives a power-down request, the microcontroller also sends a first power-down signal and a second power-down signal to the analog front-end chip, so that the analog front-end chip powers down under the control of the first power-down signal and the second power-down signal.

[0023] Optionally, the first power-down signal is a software instruction, and the second power-down signal is a hardware signal.

[0024] In a second aspect, the present invention provides a control method for an energy storage power source, used to control the energy storage power source described in any of the above claims, the control method comprising:

[0025] In response to a first power-on request sent by the main control module, the first switch control circuit controls the first switch unit to close, and the battery module supplies power to the main control module and the voltage conversion module through the first switch unit, so as to power on the main control module.

[0026] After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close, and the battery module supplies power to the voltage conversion module through the second switch unit.

[0027] The technical solution of this invention includes an energy storage power supply comprising a battery module, a switch control module, a main control module, and a voltage conversion module. The main control module and the voltage conversion module are electrically connected to the battery module via the switch control module. The switch control module includes a first switch circuit and a second switch circuit. The first switch circuit includes a first switch control circuit and a first switch unit. The second switch circuit includes a second switch control circuit and a second switch unit. The first switch control circuit is electrically connected to the first switch unit, and the second switch control circuit is electrically connected to the second switch unit. The battery module is electrically connected to the main control module and the voltage conversion module via the first switch unit or the second switch unit, respectively. The current when the first switch unit is turned on is less than the current when the second switch unit is turned on. The first switch control circuit responds to a first power-on request sent by the main control module and controls the first switch unit to close. The battery module then... The first switching unit supplies power to the main control module and the voltage conversion module, enabling the main control module to power on. After the main control module is powered on, the second switching control circuit responds to the power supply request sent by the main control module and controls the second switching unit to close. The battery module then supplies power to the voltage conversion module through the second switching unit. This allows the first switching control circuit to directly respond to the first power-on request sent by the main control module and control the first switching unit to close. As a result, the battery module pre-charges the main control module and the voltage conversion module without needing to wake up the switching control module first, which improves the power-on speed of the entire system. At the same time, since the first switching control circuit controls the first switching unit to conduct according to the first power-on request sent by the main control module, there is no need for the switching control module to set up a microcontroller unit to achieve the pre-charging of the main control module and the voltage conversion module, thereby reducing the cost of the energy storage power supply.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an energy storage power source provided in an embodiment of the present invention;

[0031] Figure 2 A flowchart of a control method for an energy storage power supply provided in an embodiment of the present invention. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0034] Figure 1 This is a schematic diagram of the structure of an energy storage power source provided in an embodiment of the present invention. This embodiment provides an energy storage power source, as shown in the reference diagram. Figure 1 As shown, the energy storage power supply includes: a battery module 1, a switch control module 2, a main control module 3, and a voltage conversion module 4; the main control module 3 and the voltage conversion module 4 are electrically connected to the battery module 1 through the switch control module 2; the switch control module 2 includes a first switch circuit 21 and a second switch circuit 22, the first switch circuit 21 includes a first switch control circuit 211 and a first switch unit 212, and the second switch circuit 22 includes a second switch control circuit 221 and a second switch unit 222; the first switch control circuit 211 is electrically connected to the first switch unit 212, and the second switch control circuit 221 is electrically connected to the second switch unit 222; the battery module 1 is electrically connected to the main control module 3 and the voltage conversion module 4 through the first switch unit 212 or the second switch unit 222 respectively, and the current when the first switch unit 212 is turned on is less than the current when the second switch unit 222 is turned on. The first switch control circuit 211 responds to the first power-on request sent by the main control module 3 and controls the first switch unit 212 to close. The battery module 1 supplies power to the main control module 3 and the voltage conversion module 4 through the first switch unit 212, so that the main control module 3 is powered on. After the main control module 3 is powered on, the second switch control circuit 221 responds to the power supply request sent by the main control module 3 and controls the second switch unit 222 to close. The battery module 1 supplies power to the voltage conversion module 4 through the second switch unit 222.

[0035] The battery module 1 is used to store and provide electrical energy. In an optional embodiment, the battery module 1 includes a plurality of cells connected in series and / or in parallel. The plurality of cells may include, but are not limited to, at least one of lithium-ion batteries, nickel-metal hydride batteries, and lead-acid batteries.

[0036] The switch control module 2 is used to control the charging and discharging process of the battery module 1. In addition, the switch control module 2 is also used to monitor and manage the status information of the battery module 1 during the charging and discharging process to ensure the safety and stable performance of the battery module 1.

[0037] The switch control module 2 includes a first switch circuit 21 and a second switch circuit 22. The first switch circuit 21 controls whether the circuit for pre-charging the main control module 3 and the voltage conversion module 4 by the battery module 1 is connected. The second switch circuit 22 controls whether the circuit for discharging the battery module 1 to the voltage conversion module 4 by the battery module 1 is connected. The first switch circuit 21 includes a first switch control circuit 211 and a first switch unit 212, which are electrically connected. The first switch control circuit 211 controls whether the first switch unit 212 is connected. The second switch circuit 22 includes a second switch control circuit 221 and a second switch unit 222, which are electrically connected. The second switch control circuit 221 controls whether the second switch unit 222 is connected. Since battery module 1 is electrically connected to main control module 3 and voltage conversion module 4 through first switch unit 212 or second switch unit 222, the current when first switch unit 212 is turned on is less than the current when second switch unit 222 is turned on. Therefore, when first switch unit 212 is turned on, battery module 1 is electrically connected to main control module 3 and voltage conversion module 4 through first switch unit 212, and at this time, battery module 1 pre-charges main control module 3 and voltage conversion module 4. When first switch unit 212 is not turned on, battery module 1 stops pre-charging main control module 3 and voltage conversion module 4. Similarly, when second switch unit 222 is turned on, battery module 1 is electrically connected to main control module 3 and voltage conversion module 4 through second switch unit 222. At this time, battery module 1 supplies power to external devices through voltage conversion module 4 under the control of main control module 3. When second switch unit 222 is not turned on, battery module 1 stops supplying power to external devices through voltage conversion module 4.

[0038] In an exemplary embodiment, the first switching unit 212 includes a first switch 2121 and a first resistor 2122, which are connected in series. When the first switch 2121 is turned on, the battery module 1 is pre-charged to the main control module 3 and the voltage conversion module 4. For example, the first switch 2121 includes a first MOSFET, which is a P-channel MOSFET. The drain of the first MOSFET is electrically connected to the battery module 1, and the source of the first MOSFET is electrically connected to the main control module 3 and the voltage conversion module 4 through the first resistor 2122. The gate of the first MOSFET is electrically connected to the first switch control circuit 211, thereby enabling the first switch control circuit 211 to control the on and off states of the first switch 2121. When the first switch 2121 is turned on, the battery module 1 can pre-charge the main control module 3 and the voltage conversion module 4.

[0039] The main control module 3 is used to control the status of the entire energy storage power system. For example, the main control module 3 is used to receive control commands (switching commands or charging commands from the charging port of the voltage conversion module 4, etc.), and according to the control commands, it controls the battery module 1 to precharge the main control module 3 and the voltage conversion module 4, so that the battery module supplies power to external electrical equipment through the voltage conversion module 4, or allows the external power supply equipment to charge the battery module 1 through the voltage conversion module 4. At the same time, the main control module 3 also communicates with the switch control module 2 to obtain the status information of the battery module 1, thereby ensuring the safe operation of the battery module 1.

[0040] In an optional embodiment, the main control module 3 includes a microcontroller unit 31 and a first power supply unit 32. The first power supply unit 32 is used to provide a first power signal to the microcontroller unit 31 so that the microcontroller unit 31 is powered on and controls the state of the entire energy storage power system.

[0041] The voltage conversion module 4 is used to control the charging and discharging process of the battery module 1 to achieve bidirectional flow of electrical energy between the battery module 1 and external power supply equipment (DC power supply equipment or AC power supply equipment) or external electrical equipment. The voltage conversion module 4 includes at least a maximum power point tracking unit 41 and an inverter unit 42 to improve charging and discharging efficiency.

[0042] The first power-on request can be understood as a request to power on the entire system via a switch command, while the power supply request can be understood as a request to power external devices via a switch command. The main control module 3 and voltage conversion module 4 are electrically connected to the battery module 1 through the switch control module 2. The first switch control circuit 211 is electrically connected to the first switch unit 212, enabling the first switch control circuit 211 of the switch control module 2 to respond to the first power-on request sent by the main control module 3 and control the first switch unit 212 to close. At this time, the battery module 1 is electrically connected to both the main control module 3 and the voltage conversion module 4 through the first switch unit 212, allowing the battery module 1 to supply power to both the main control module 3 and the voltage conversion module 4 via the first switch unit 212. The voltage conversion module 4 is pre-charged, and the main control module 3 is powered on. After the main control module 3 is powered on, the second switch control circuit 221 responds to the power supply request sent by the main control module 3 and controls the second switch unit 222 to close. At this time, the battery module 1 is electrically connected to the main control module 3 and the voltage conversion module 4 through the second switch unit 222, so that the battery module 1 supplies power to the voltage conversion module 4 through the second switch unit 222 under the control of the main control module 3. Then, the voltage conversion module 4 converts the voltage provided by the battery module 1 into a voltage that matches the external power supply to power the external power supply.

[0043] In this embodiment, the energy storage power supply includes a battery module, a switch control module, a main control module, and a voltage conversion module. The main control module and the voltage conversion module are electrically connected to the battery module through the switch control module. The switch control module includes a first switch circuit and a second switch circuit. The first switch circuit includes a first switch control circuit and a first switch unit. The second switch circuit includes a second switch control circuit and a second switch unit. The first switch control circuit is electrically connected to the first switch unit, and the second switch control circuit is electrically connected to the second switch unit. The battery module is electrically connected to the main control module and the voltage conversion module through the first switch unit or the second switch unit, respectively. The current when the first switch unit is turned on is less than the current when the second switch unit is turned on. The first switch control circuit responds to a first power-on request sent by the main control module and controls the first switch unit to close. The battery module is then connected to the main control module through the first switch unit. The switching unit supplies power to the main control module and the voltage conversion module to power on the main control module. After the main control module is powered on, the second switching control circuit responds to the power supply request sent by the main control module and controls the second switching unit to close. The battery module supplies power to the voltage conversion module through the second switching unit, so that the first switching control circuit directly responds to the first power-on request sent by the main control module and controls the first switching unit to close. Thus, the battery module pre-charges the main control module and the voltage conversion module without having to wake up the switching control module first, which helps to improve the power-on speed of the whole system. At the same time, since the first switching control circuit controls the first switching unit to conduct according to the first power-on request sent by the main control module, there is no need for the switching control module to set up a microcontroller unit to realize the pre-charging of the main control module and the voltage conversion module, thereby reducing the cost of the energy storage power supply.

[0044] Optional, continue to refer to Figure 1 As shown, the main control module 3 includes a switch signal sending unit 33, which is electrically connected to the first switch control circuit 211. The switch signal sending unit 33 is used to send a first power-on request to the first switch control circuit 211.

[0045] The switch signal transmitting unit 33 may include, but is not limited to, a switch button. In an exemplary embodiment, when the user presses the switch button, the switch signal transmitting unit 33 sends a first power-on request to the first switch control circuit 211.

[0046] Specifically, by including a switch signal sending unit 33 in the main control module 3, which is electrically connected to the first switch control circuit 211, the switch signal sending unit 33 can send a first power-on request to the first switch control circuit 211. This causes the first switch control circuit 211 to control the first switch unit 212 to turn on, thereby enabling the battery module 1 to supply power to the main control module 3 and the voltage conversion module 4 through the first switch unit 212. In other words, the battery module 1 pre-charges the main control module 3 and the voltage conversion module 4. Simultaneously, the battery module 1 outputs voltage to the main control module 3, powering on the microcontroller unit 31.

[0047] It should be noted that the first power-on request sent by the switch signal sending unit 33 to the first switch control circuit 211 is short, which results in a short time for the first switch control circuit 211 to control the first switch unit 212 to conduct. This leads to a short time for the battery module 1 to precharge the main control module 3 and the voltage conversion module 4, which may result in the main control module 3 and the voltage conversion module 4 failing to complete the precharging.

[0048] Optional, continue to refer to Figure 1 As shown, the main control module 3 includes a switch signal sending unit 33 and a microcontroller unit 31. The switch signal sending unit 33 is electrically connected to the microcontroller unit 31, and the microcontroller unit 31 is also electrically connected to the first switch control circuit 211. The switch signal sending unit 33 is used to send a first power-on request to the microcontroller unit 31; the microcontroller unit 31 is used to respond to the first power-on request and send a second power-on request to the first switch control circuit 211.

[0049] The microcontroller unit 31 controls the state of the entire energy storage power supply system upon power-up. The second power-up request can be understood as the microcontroller unit 31 responding to the first power-up request by sending a power-up request to the first switch control circuit 211 to turn on the first switch unit 212. Specifically, by electrically connecting the switch signal sending unit 33 to the microcontroller unit 31, and the microcontroller unit 31 to the first switch control circuit 211, the switch signal sending unit 33 can send the first power-up request to the microcontroller unit 31. Since the microcontroller unit 31 has already completed power-up after the switch signal sending unit 33 sends the first power-up request to the first switch control circuit 211 to turn on the first switch unit 212, when the switch signal sending unit 33 sends the first power-up request to the microcontroller unit 31, the microcontroller unit 31 can respond to the first power-up request and send the second power-up request to the first switch control circuit 211, so that the first switch control circuit 211 controls the first switch unit 212 to turn on, thereby enabling the battery module 1 to pre-charge the main control module 3 and the voltage conversion module 4. It should be noted that the microcontroller unit 31 continuously sends a second power-on request to the first switch control circuit 211, thereby the first switch control circuit 211 controls the first switch unit 212 to remain on until the main control module 3 and the voltage conversion module 4 complete pre-charging. This shortens the pre-charging time of the entire system.

[0050] Optional, continue to refer to Figure 1 As shown, the first power supply unit 32 and the microcontroller unit 31 are electrically connected. When the first switch unit 212 is turned on, the battery module 1 provides an output power signal to the first power supply unit 32, and the first power supply unit 32 provides a first power signal to the microcontroller unit 31 according to the output power signal, so as to power on the microcontroller unit 31.

[0051] The first power supply unit 32 can be understood as the power supply for the main control module 3. When the output power signal provided by the battery module 1 is provided to the main control module 3, the output power signal may differ from the power signal required by other components in the main control module 3, such as the microcontroller 31. Therefore, the first power supply unit 32 can be electrically connected to the microcontroller 31 so that the first power supply unit 32 provides a first power signal that matches the microcontroller 31 according to the output power signal provided by the battery module 1, thereby powering on the microcontroller 31.

[0052] Optional, continue to refer to Figure 1As shown, the switch control module 2 includes a third switch circuit 24, which includes a third switch control unit 241 and a third switch unit 242. The third switch control unit 241 and the third switch unit 242 are electrically connected. The second switch unit 222 is connected in parallel with the first switch unit 212, and the third switch unit 242 is connected in series between the battery module 1 and the first switch unit 212. After the microcontroller unit 31 is powered on, the third switch control circuit 241 responds to the discharge request sent by the microcontroller unit 31 and controls the third switch unit 242 to close. The voltage conversion module 4 supplies power to the battery module 1 through the third switch unit 242.

[0053] When the third switch unit 242 is turned on, the external power supply device of the charging port 43 supplies power to the battery module 1. When the second switch unit 222 is turned on, the battery module 1 discharges. In an optional embodiment, the third switch unit 242 includes a second MOSFET, which is an N-channel MOSFET. The source of the second MOSFET is electrically connected to the main control module 3 and the voltage conversion module 4, the drain of the second MOSFET is electrically connected to the second switch unit 222, and the gate of the second MOSFET is electrically connected to the third switch control circuit 241. This allows the third switch control circuit 241 to control the turning on and off of the third switch unit 242, and when the third switch unit 242 is turned on, the external power supply device can supply power to the battery module 1. In an optional embodiment, the second switching unit 222 includes a third MOSFET, which is an N-channel MOSFET. The source of the third MOSFET is electrically connected to the battery module 1, the drain of the third MOSFET is electrically connected to the first switching unit 212, and the gate of the third MOSFET is electrically connected to the second switching control circuit 221. This enables the second switching control circuit 221 to control the turning on and off of the second switching unit 222. When the second switching unit 222 is turned on, the battery module 1 can provide power to external electrical devices.

[0054] It should be noted that the second switch unit 222 and the third switch unit 242 are connected in series. When the second switch control circuit 221 controls the second switch unit 222 to conduct so that the battery module 1 discharges to the outside, the third switch control circuit 241 also controls the third switch unit 242 to conduct. Similarly, when the third switch control circuit 241 controls the third switch unit 242 to conduct so that the external power supply device charges the battery module 1, the second switch control circuit 221 also controls the second switch unit 222 to conduct, so that the battery module 1 can achieve discharge and charge.

[0055] Optional, continue to refer to Figure 1As shown, the voltage conversion module 4 includes a charging port 43 and an auxiliary power supply unit 44. The charging port 43 is electrically connected to the auxiliary power supply unit 44, and the auxiliary power supply unit 44 is electrically connected to the first power supply unit 32. The auxiliary power supply unit 44 is used to provide an auxiliary power signal to the first power supply unit 32 in response to the input signal from the charging port 43. The first power supply unit 32 provides a first power signal to the microcontroller unit 31 according to the auxiliary power signal, so as to power on the microcontroller unit 31.

[0056] The charging port 43 is used to connect to an external power supply device, such as a DC power supply device or an AC power supply device, to charge the battery module 1. In other embodiments, the charging port 43 can also be connected to an external electrical device so that the battery module 1 supplies power to the external electrical device when discharging. The auxiliary power supply unit 44 is used to convert the input signal with a wide input voltage range from the external power supply device into an auxiliary power supply signal with a stable voltage.

[0057] Specifically, the auxiliary power supply unit 44 is electrically connected to the charging port 43, which in turn is electrically connected to the first power supply unit 32. The first power supply unit 32 is also electrically connected to the microcontroller unit 31. This allows the input signal from the charging port 43 to be provided to the auxiliary power supply unit 44. Responding to the input signal from the charging port 43, the auxiliary power supply unit 44 provides an auxiliary power signal to the first power supply unit 32. The first power supply unit 32 then provides a first power signal to the microcontroller unit 31 based on the auxiliary power signal. This powers on the microcontroller unit 31, which then sends a third power-on request to the first switch control circuit 211. This causes the first switch control circuit 211 to control the first switch unit 212 to conduct, allowing the battery module 1 to be powered by the first switch unit 212, i.e., to pre-charge. The third power-on request can be understood as the request sent by the microcontroller unit 31 to the first switch control circuit 211 to turn on the first switch unit 212 when the microcontroller unit 31 is powered on based on the input signal from the charging port 43.

[0058] Optionally, the voltage conversion module 4 includes an AC-DC module 46 and / or a DC-DC module 47. The input port 43 is electrically connected to the auxiliary power supply unit 44 through the AC-DC module 46 and / or the DC-DC module 47, so that the AC-DC module 46 can convert the voltage provided by the external AC power supply device into the voltage adapted to the auxiliary power supply unit 44, and the DC-DC module 47 can convert the voltage provided by the external DC power supply device into the voltage adapted to the auxiliary power supply unit 44, thereby enabling the external DC power supply device and the external AC power supply device to charge the battery module 1.

[0059] It should be noted that, Figure 1This illustration only demonstrates the case where the voltage conversion module 4 includes either an AC-DC module 46 or a DC-DC module 47, and is not intended to limit the structure of the voltage conversion module 4. In an optional embodiment, the voltage conversion module 4 may further include an AC-DC module 46 and a DC-DC module 47. When the voltage conversion module 4 includes an AC-DC module 46 and a DC-DC module 47, the AC-DC module 46 or the DC-DC module 47 is connected in parallel, and the input port 43 is electrically connected to the auxiliary power supply unit 44 through the AC-DC module 46 or the DC-DC module 47.

[0060] Optional, continue to refer to Figure 1 As shown, the switch control module 2 also includes an analog front-end chip 23. The microcontroller unit 31 is electrically connected to the analog front-end chip 23. When powered on, the microcontroller unit 31 sends a wake-up signal to the analog front-end chip 23.

[0061] The analog front-end chip 23 is used to monitor and manage the status of the battery module 1, the charging and discharging process, and to protect the battery module 1 from overcharging, over-discharging, or short circuits. The analog front-end chip 23 is electrically connected to the microcontroller unit 31, enabling the microcontroller unit 31 to communicate with the analog front-end chip 23. When powered on, the microcontroller unit 31 sends a wake-up signal to the analog front-end chip 23, thus eliminating the need for a separate microcontroller unit 31 in the switch control module 2, which helps reduce the cost of the energy storage power supply.

[0062] It should be noted that the second switch control circuit 221 and the third switch control circuit 241 are integrated into the analog front-end chip 23, so that the microcontroller unit 31 can communicate with the analog front-end chip 23 to enable the second switch control circuit 221 to respond to the power supply request sent by the main control module 3, and enable the third switch control circuit 241 to respond to the discharge request sent by the main control module 3, thereby simplifying the structure and communication method of the energy storage power supply and saving communication resources.

[0063] In an optional embodiment, the microcontroller unit 31 includes a first I / O interface 311, and the analog front-end chip 23 includes a wake-up module 231 and an activation circuit 232. The first I / O interface 311 is electrically connected to the wake-up module 231 through the activation circuit 232, so that the microcontroller unit 31 sends a wake-up signal to the wake-up module 231 of the analog front-end chip 23 through the first I / O interface 311.

[0064] In an optional embodiment, the microcontroller unit 31 includes a second I / O interface 312, which is electrically connected to the switch signal transmitting unit 33, so that the switch signal transmitting unit 33 can send a first power-on request to the microcontroller unit 31 through the second I / O interface 312.

[0065] In an optional embodiment, the microcontroller 31 includes a third I / O interface 313, which is electrically connected to the first switch control circuit 211, enabling the microcontroller 31 to respond to a first power-on request sent by the switch signal sending unit 33 and send a second power-on request to the first switch control circuit 211 through the third I / O interface 313.

[0066] In an optional embodiment, the analog front-end chip 23 includes a cell voltage acquisition module 233, which is electrically connected to the battery module 1. The cell voltage acquisition module 233 is used to acquire the voltage of each cell in the battery module 1, thereby enabling the analog front-end chip 23 to monitor the voltage of each cell in the battery module 1.

[0067] In an optional embodiment, the analog front-end chip 23 includes a cell temperature sampling module 234 for collecting the temperature of each cell in the battery module 1.

[0068] In an optional embodiment, the analog front-end chip 23 includes a current sampling module 235 for collecting the current of the battery module 1.

[0069] In an optional embodiment, the analog front-end chip 23 includes a P+ voltage sampling module 2312 for acquiring the voltage at the positive output terminal P+ of the battery module 1.

[0070] In an optional embodiment, the analog front-end chip 23 includes an equalization control module 236 and an equalization circuit 237. The equalization control module 236 is electrically connected to the battery module 1 through the equalization circuit 237 to adjust the charging and discharging of each cell in the battery module 1 according to parameters such as voltage, current and / or temperature of each cell in the battery module 1, so that the voltage of each cell in the battery module 1 is balanced, thereby improving the charging and discharging stability and lifespan of the battery module 1.

[0071] Optional, continue to refer to Figure 1 As shown, when the microcontroller unit 31 receives a power-down request, the microcontroller unit 31 also sends a first power-down signal and a second power-down signal to the analog front-end chip 23 so that the analog front-end chip 23 powers down under the control of the first power-down signal and the second power-down signal.

[0072] The power-down request can be understood as a signal from the user requesting power-down via the switch signal sending unit 33. In an exemplary embodiment, when the entire system is powered on, the user presses and holds the switch signal sending unit 33, and the switch signal sending unit 33 sends a power-down request to the microcontroller unit 31.

[0073] Both the first and second power-down signals are signals that power down the analog chip. By having the microcontroller unit 31 also send the first and second power-down signals to the analog front-end chip 23, the analog front-end chip 23 is powered down under the control of the first and second power-down signals. This can, to some extent, avoid the problem of the analog front-end chip 23 failing to power down, causing the battery module 1 to continuously consume power, and is beneficial to improving the energy efficiency of the energy storage power supply. In an optional embodiment, the first power-down signal is a software instruction, and the second power-down signal is a hardware signal, which can further prevent the analog front-end chip 23 from failing to power down.

[0074] In one optional embodiment, the main control module 3 includes a fourth I / O interface 314 and a first communication interface 315, and the analog front-end chip 23 includes a power-down module 2310 and a second communication interface 2311. The fourth I / O interface 314 and the power-down module 2310 are electrically connected, and the first communication interface 315 and the second communication interface 2311 are electrically connected. This allows the main control module 3 to send a second power-down signal to the power-down module 2310 of the analog front-end chip 23 through the fourth I / O interface 314. Simultaneously, the main control module 3 can send a second power-down signal to the second communication interface 2311 of the analog front-end chip 23 through the first communication interface 315. In an exemplary embodiment, bidirectional communication is performed between the first communication interface 315 and the second communication interface 2311, and an isolation chip 26 is also included between the first communication interface 315 and the second communication interface 2311.

[0075] In an optional embodiment, when the analog front-end chip 23 is powered off, the charging switch unit 24 and the discharging switch unit 25 will also be turned off, thereby powering down the entire system.

[0076] In an optional embodiment, the main control module 3 further includes a third communication interface 316, and the voltage conversion module 4 includes a fourth communication interface 45. The third communication interface 316 and the fourth communication interface 45 are electrically connected, and bidirectional communication is performed between the third communication interface 316 and the fourth communication interface 45, so that the main control module 3 can communicate bidirectionally with the voltage conversion module 4.

[0077] Based on the same concept, this embodiment also provides a control method for an energy storage power supply, used to control the energy storage power supply provided in any embodiment of the present invention. Figure 2 A flowchart of a control method for an energy storage power supply provided in an embodiment of the present invention is shown below. Figure 2 As shown, the control method includes:

[0078] S10. In response to the first power-on request sent by the main control module, the first switch control circuit controls the first switch unit to close, and the battery module supplies power to the main control module and the voltage conversion module through the first switch unit so that the main control module is powered on.

[0079] S20. After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close, and the battery module supplies power to the voltage conversion module through the second switch unit.

[0080] In this embodiment, by responding to the first power-on request sent by the main control module, the first switch control circuit controls the first switch unit to close, and the battery module supplies power to the main control module and the voltage conversion module through the first switch unit, thereby powering on the main control module. After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close, and the battery module supplies power to the voltage conversion module through the second switch unit. This eliminates the need to wake up the switch control module before pre-charging, which helps to improve the power-on speed of the entire system. At the same time, since the first switch control circuit controls the first switch unit to conduct according to the power-on request sent by the main control module, there is no need for the switch control module to set up a microcontroller unit to realize the pre-charging of the main control module and the voltage conversion module, thereby reducing the cost of the energy storage power supply.

[0081] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. 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 modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An energy storage power source, characterized in that, include: Battery module, switch control module, main control module, and voltage conversion module; The main control module and the voltage conversion module are electrically connected to the battery module through the switch control module; The switch control module includes a first switch circuit and a second switch circuit. The first switch circuit includes a first switch control circuit and a first switch unit. The second switch circuit includes a second switch control circuit and a second switch unit. The first switch control circuit is electrically connected to the first switch unit, and the second switch control circuit is electrically connected to the second switch unit. The battery module is electrically connected to the main control module and the voltage conversion module through the first switch unit or the second switch unit, respectively. The current when the first switch unit is turned on is less than the current when the second switch unit is turned on. The first switch control circuit responds to the first power-on request sent by the main control module and controls the first switch unit to close. The battery module supplies power to the main control module and the voltage conversion module through the first switch unit, so as to power on the main control module. After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close. The battery module supplies power to the voltage conversion module through the second switch unit.

2. The energy storage power supply according to claim 1, characterized in that, The main control module includes a switch signal transmitting unit; the switch signal transmitting unit is electrically connected to the first switch control circuit. The switch signal sending unit is used to send a first power-on request to the first switch control circuit.

3. The energy storage power supply according to claim 1, characterized in that, The main control module includes a switch signal transmitting unit and a microcontroller unit; the switch signal transmitting unit is electrically connected to the microcontroller unit; the microcontroller unit is also electrically connected to the first switch control circuit. The switch signal sending unit is used to send a first power-on request to the microcontroller unit; the microcontroller unit is used to respond to the first power-on request and send a second power-on request to the first switch control circuit.

4. The energy storage power supply according to claim 1, characterized in that, The main control module includes a first power supply unit and a microcontroller unit; the first power supply unit and the microcontroller unit are electrically connected. When the first switching unit is turned on, the battery module provides an output power signal to the first power supply unit; The first power supply unit provides a first power signal to the microcontroller unit according to the output power signal, so as to power on the microcontroller unit.

5. The energy storage power supply according to claim 1, characterized in that, The main control module includes a first power supply unit and a microcontroller unit; the voltage conversion module includes a charging port and an auxiliary power supply unit. The charging port is electrically connected to the auxiliary power supply unit, and the auxiliary power supply unit is electrically connected to the first power supply unit; the auxiliary power supply unit is used to provide an auxiliary power signal to the first power supply unit in response to the input signal of the charging port. The first power supply unit and the microcontroller unit are electrically connected; the first power supply unit provides a first power signal to the microcontroller unit according to the auxiliary power signal, so as to power on the microcontroller unit.

6. The energy storage power supply according to claim 5, characterized in that, The voltage conversion module includes: an AC-DC module and / or a DC-DC module; The input port is electrically connected to the auxiliary power supply unit via the AC-DC module and / or the DC-DC module.

7. The energy storage power supply according to any one of claims 4 or 5, characterized in that, The switch control module also includes an analog front-end chip; The microcontroller unit is electrically connected to the analog front-end chip; the microcontroller unit sends a wake-up signal to the analog front-end chip when powered on.

8. The energy storage power supply according to claim 7, characterized in that, When the microcontroller receives a power-down request, the microcontroller also sends a first power-down signal and a second power-down signal to the analog front-end chip, so that the analog front-end chip powers down under the control of the first power-down signal and the second power-down signal.

9. The energy storage power supply according to claim 8, characterized in that, The first power-down signal is a software instruction, and the second power-down signal is a hardware signal.

10. A control method for an energy storage power source, characterized in that, The control method for controlling the energy storage power source according to any one of claims 1-9 includes: In response to a first power-on request sent by the main control module, the first switch control circuit controls the first switch unit to close, and the battery module supplies power to the main control module and the voltage conversion module through the first switch unit, so as to power on the main control module. After the main control module is powered on, the second switch control circuit responds to the power supply request sent by the main control module and controls the second switch unit to close, and the battery module supplies power to the voltage conversion module through the second switch unit.

Images