CN220874420U

CN220874420U - Power supply system

Info

Publication number: CN220874420U
Application number: CN202322413979.2U
Authority: CN
Inventors: 计爽
Original assignee: Siemens Shenzhen Magnetic Resonance Ltd
Current assignee: Siemens Shenzhen Magnetic Resonance Ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-04-30
Anticipated expiration: 2033-09-05

Abstract

The utility model discloses a power supply system, comprising: the PFC converter is connected with the mains supply circuit and used for converting the mains supply voltage into a first direct current voltage; the inversion module is connected with the PFC converter and the alternating current power utilization unit and is used for converting the first direct current voltage into first alternating current voltage so as to supply power to the alternating current power utilization unit; the bidirectional DC/DC module is connected with the PFC converter, the inversion module and the direct current power utilization unit and is used for converting the first direct current voltage into the second direct current voltage so as to supply power to the direct current power utilization unit; the energy storage module is connected with the bidirectional DC/DC module and the direct current power utilization unit and is used for storing electric energy when the PFC converter normally operates; and the power supply device is also used for supplying a third direct current voltage to the bidirectional DC/DC module and the direct current power utilization unit when the PFC converter is abnormal so as to supply power to the alternating current power utilization unit and the direct current power utilization unit. The utility model adopts a new design scheme, and the bidirectional DC/DC module can be multiplexed to the maximum extent through the cooperation of the PFC converter and the bidirectional DC/DC module so as to optimize the configuration of a power supply system.

Description

Power supply system

Technical Field

The utility model relates to the technical field of power supply, in particular to a power supply system.

Background

The existing AT (Automatic Transfer) power supply system adopts a traditional mode: the commercial power is isolated and transformed by a single-phase transformer to supply power for the alternating current power utilization unit at the rear end; meanwhile, an AC/DC converter is used in the circuit to convert alternating current voltage into direct current voltage for supplying power to a direct current power utilization unit at the rear end. To prevent accidental power outages, the AT power system is also configured with uninterruptible power supply (UPS, uninterruptible Power Supply) devices. With many years of technical precipitation, conventional power supply systems have been optimized in terms of cost and volume, and it has been difficult to make larger volume and cost optimizations over existing designs.

Disclosure of utility model

The utility model aims to provide a power supply system, which adopts a new design scheme, and can furthest multiplex a bidirectional DC/DC module through the cooperation of a PFC converter and the bidirectional DC/DC module, thereby optimizing the configuration of the power supply system.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme:

A power supply system, comprising:

The PFC converter is connected with the mains supply circuit and used for converting the mains supply voltage into a first direct current voltage;

The inversion module is connected with the PFC converter and the alternating current power utilization unit and used for converting the first direct current voltage into first alternating current voltage so as to supply power to the alternating current power utilization unit;

The bidirectional DC/DC module is connected with the PFC converter, the inversion module and the direct current power utilization unit and is used for converting the first direct current voltage into a second direct current voltage so as to supply power to the direct current power utilization unit;

The energy storage module is connected with the bidirectional DC/DC module and the direct current power utilization unit and is used for storing electric energy when the PFC converter normally operates; and the power supply device is also used for supplying a third direct current voltage to the bidirectional DC/DC module and the direct current power utilization unit when the PFC converter is abnormal so as to supply power to the alternating current power utilization unit and the direct current power utilization unit.

Optionally, the bidirectional DC/DC module includes a first end and a second end, the first end is connected with the PFC converter and the inversion module, and the second end is connected with the energy storage module and the direct current power consumption unit; and one of the first end and the second end is an input end of the bidirectional DC/DC module, and the other is an output end of the bidirectional DC/DC module; the technical scheme enables the bidirectional DC/DC module to be multiplexed.

Optionally, when the PFC converter is operating normally, the first end is used as an input end of the bidirectional DC/DC module, and the second end is used as an output end of the bidirectional DC/DC module; the bidirectional DC/DC module is used for converting the first direct-current voltage into the second direct-current voltage and transmitting the second direct-current voltage to the direct-current power utilization unit and the energy storage module so as to supply power to the direct-current power utilization unit and enable the energy storage module to store electric energy; according to the technical scheme, the direct current power utilization unit, the energy storage module and the alternating current power utilization unit can work normally when the PFC converter operates normally.

Optionally, the second dc voltage is lower than the first dc voltage; according to the technical scheme, the working mode of the bidirectional DC/DC module is a step-down mode, so that the second direct-current voltage output by the bidirectional DC/DC module is the working voltage of the direct-current power utilization unit and the energy storage module.

Optionally, the priority of electricity consumption of the direct current electricity consumption unit is higher than the priority of electricity storage of the energy storage module; the technical scheme can preferentially ensure that the direct current power utilization unit works normally.

Optionally, the electricity storage efficiency of the energy storage module is inversely proportional to the electricity utilization efficiency of the direct current electricity utilization unit; the technical scheme can further ensure that the direct current power utilization unit works normally.

Optionally, when the PFC converter is abnormal, the second end is used as an input end of the bidirectional DC/DC module, and the first end is used as an output end of the bidirectional DC/DC module; the bidirectional DC/DC module is used for converting the third direct-current voltage into a fourth direct-current voltage and transmitting the fourth direct-current voltage to the inversion module so as to supply power to the alternating-current power utilization unit through the inversion module; according to the technical scheme, the alternating current power utilization unit and the direct current power utilization unit can still work normally when the PFC converter is abnormal.

Optionally, the third dc voltage is lower than the fourth dc voltage, and the third dc voltage is equal to the second dc voltage, and the fourth dc voltage is equal to the first dc voltage; according to the technical scheme, the working mode of the bidirectional DC/DC module is a boosting mode, so that the fourth direct-current voltage output by the bidirectional DC/DC module is the working voltage of the inversion module.

Optionally, the inverter module is further configured to convert the fourth dc voltage into a second ac voltage to power the ac power unit; and the second alternating voltage is equal to the first alternating voltage; according to the technical scheme, the inversion module can supply power to the alternating current power utilization unit when the PFC converter is abnormal.

Optionally, the PFC converter includes:

The input end of the filtering unit is connected with the mains supply circuit and is used for filtering noise in the mains supply voltage;

The input end of the rectifying unit is connected with the filtering unit, the output end of the rectifying unit is connected with the inversion module and the bidirectional DC/DC module, and the rectifying unit is used for converting the mains voltage with noise filtered into the first direct current voltage; according to the technical scheme, the mains voltage can be smoothed, and the PFC converter can output the first direct-current voltage.

Optionally, the power supply system further includes: one end of the bidirectional Buck Boost module is connected with the energy storage module, and the other end of the bidirectional Buck Boost module is connected with the bidirectional DC/DC module and the direct current power utilization unit; according to the technical scheme, when the PFC converter is abnormal, the energy storage module transmits the third direct-current voltage to the bidirectional DC/DC module and the direct-current power utilization unit to be constant voltage, and the third direct-current voltage cannot be reduced or increased along with the change of electric quantity in the energy storage module.

Optionally, the power supply system further includes: a battery management system connected with the energy storage module; the technical scheme can monitor the electric quantity of the energy storage module and switch the electricity storage mode and the discharging mode of the energy storage module.

Optionally, the energy storage module comprises one or a combination of a storage battery and a super capacitor; the technical scheme enables the energy storage module to have strong electric energy storage capacity.

In summary, compared with the prior art, the power supply system provided by the utility model has the following beneficial effects:

1. By adopting a new design scheme, the PFC converter can replace a traditional single-phase transformer, and can convert the mains voltage into the first direct-current voltage. When the PFC converter normally operates, the inversion module can convert the first direct-current voltage into first alternating-current voltage so as to supply power to the alternating-current power utilization unit; meanwhile, the bidirectional DC/DC module can convert the first direct-current voltage into the second direct-current voltage so as to supply power to the direct-current power utilization unit and enable the energy storage module to store power. When the PFC converter is abnormal, the energy storage module can be used for conveying third direct current voltage to the bidirectional DC/DC module and the direct current power utilization unit so as to supply power to the direct current power utilization unit and supply power to the alternating current power utilization unit through the bidirectional DC/DC module and the inversion module connected with the bidirectional DC/DC module. According to the utility model, through the cooperation of the PFC converter and the bidirectional DC/DC module, the bidirectional DC/DC module can be multiplexed to the maximum extent, so that the configuration of a power supply system is optimized.

2. The power supply system provided by the utility model can only comprise four components, namely the PFC converter, the inversion module, the bidirectional DC/DC module and the energy storage module, so that the number of the components in the power supply system is effectively reduced, and meanwhile, the manufacturing cost of the power supply system can be reduced and the volume of the power supply system can be reduced.

3. Compared with the design scheme in the prior art, the power supply system provided by the utility model has the characteristics of low material cost, simple structure and convenience in installation.

4. The power supply system provided by the utility model has the advantages that the number of components is small, the power loss can be reduced, and the power supply efficiency is effectively improved.

Drawings

The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

Fig. 1 is a schematic structural diagram of a power supply system according to the present utility model.

Wherein, the reference numerals are as follows:

Reference numerals	Meaning of
		110	PFC converter
120	Inversion module
		101	AC power consumption unit
130	Bidirectional DC/DC module
		102	DC power consumption unit
140	Energy storage module
		1101	Filtering unit
1102	Rectifying unit
		150	Bidirectional Buck Boost module
160	Battery management system

Detailed Description

The present utility model will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

In the existing AT power supply system, when the commercial power is normally supplied, the commercial power is isolated and transformed into alternating voltage through a single-phase transformer so as to supply power to an alternating current power utilization unit AT the rear end; meanwhile, an AC/DC converter connected with the single-phase transformer converts the alternating voltage into direct voltage so as to supply power to the direct-current power utilization unit at the rear end. When the mains supply is accidentally disconnected, the power supply system can be automatically switched to a UPS power supply mode; the conventional UPS device mainly comprises an AC/DC converter, a battery pack, and a DC/AC converter, and inputs an AC voltage of 230VAC, that is, 230V, and outputs an AC voltage of 230V; the alternating voltage output by the UPS can directly supply power to the alternating current power utilization unit at the rear end, and the alternating current voltage can be converted into direct current voltage through an AC/DC converter connected with UPS equipment to supply power to the direct current power utilization unit at the rear end. As can be seen, the existing AT power supply system AT least includes six components, i.e., a single-phase transformer, an AC/DC converter connected to the single-phase transformer, an AC/DC converter in UPS equipment, a battery pack and a DC/AC converter, and an AC/DC converter connected to the UPS equipment, so that the existing AT power supply system is relatively large in size and relatively high in cost; meanwhile, on the basis of the design scheme of the existing power supply system, the optimization of large volume and cost is difficult to make.

In view of the above, referring to fig. 1, the present utility model provides a power supply system with a new design scheme. As shown in fig. 1, the power supply system includes: a PFC (power factor correction ) converter 110 connected to a mains circuit for converting a mains voltage into a first dc voltage; an inverter module 120, connected to the PFC converter 110 and the ac power unit 101, for converting the first dc voltage into a first ac voltage to supply power to the ac power unit 101; a bidirectional DC/DC module 130, connected to the PFC converter 110, the inverter module 120, and the DC power unit 102, for converting the first DC voltage into a second DC voltage to supply power to the DC power unit 102; the energy storage module 140 is connected with the bidirectional DC/DC module 130 and the direct current power utilization unit 102, and is used for storing electric energy, namely electricity, when the PFC converter 110 operates normally; the energy storage module 140 is further configured to supply a third direct current voltage to the bidirectional DC/DC module 130 and the direct current power consumption unit 102 when the PFC converter 110 is abnormal, so as to supply power to the direct current power consumption unit 102 and supply power to the alternating current power consumption unit 101 through the bidirectional DC/DC module 130 and the inverter module 120 connected to the bidirectional DC/DC module 130.

As can be appreciated, the PFC converter 110 includes: the input end of the filtering unit 1101 is connected with the mains supply circuit, and is used for filtering noise in the mains supply voltage; and the rectification unit 1102 has an input end connected with the filtering unit 1101, and an output end connected with the inversion module 120 and the bidirectional DC/DC module 130, and is configured to convert the mains voltage with noise filtered into the first direct current voltage.

Specifically, in this embodiment, the utility circuit may provide utility power, where the utility power is ac, the utility voltage is typically 220V, and the frequency of the utility power is typically 50HZ. After filtering noise in the mains voltage by the filtering unit 1101 in the PFC converter 110, the mains voltage may be smoothed; the PFC converter 110 may output the first dc voltage through the rectifying unit 1102. Optionally, the PFC converter 110 has the following parameters: the input voltage is 100-240V alternating current, the input voltage frequency is 50-60 HZ, the output voltage is 400V direct current, and the output power is 2.5KVA. Optionally, the first dc voltage is 400V, but the utility model is not limited thereto.

With continued reference to fig. 1, the bidirectional DC/DC module 130 includes a first end and a second end, the first end is connected to the PFC converter 110 and the inverter module 120, and the second end is connected to the energy storage module 140 and the DC power utilization unit 102; and one of the first end and the second end is an input end of the bidirectional DC/DC module 130, the other is an output end of the bidirectional DC/DC module 130. Alternatively, the bidirectional DC/DC module 130 may have a circuit structure of bidirectional half-bridge Boost-Buck circuit, bidirectional Buck-Boost circuit, bidirectional Cuk circuit, bidirectional Zate-Sepic circuit, or the like.

It will be appreciated that, in normal operation of the PFC converter 110, the first terminal is used as an input terminal of the bidirectional DC/DC module 130, and the second terminal is used as an output terminal of the bidirectional DC/DC module 130; the bidirectional DC/DC module 130 is configured to convert the first DC voltage into the second DC voltage and send the second DC voltage to the DC power unit 102 and the energy storage module 140, so as to supply power to the DC power unit 102 and enable the energy storage module 140 to store electric energy.

It can be appreciated that, when the PFC converter 110 is abnormal, the second terminal is used as an input terminal of the bidirectional DC/DC module 130, and the first terminal is used as an output terminal of the bidirectional DC/DC module 130; the bidirectional DC/DC module 130 is configured to convert the third DC voltage into a fourth DC voltage and send the fourth DC voltage to the inverter module 120, so as to supply power to the ac power unit 101 through the inverter module 120.

Specifically, in this embodiment, the utility power may be used as a main power source of the power supply system, and the energy storage module 140 may be used as a backup power source of the power supply system. When the utility power as the main power source is normally supplied and the PFC converter 110 is not damaged, the PFC converter 110 is normally operated, and the inverter module 120 inputs the first dc voltage and outputs the first ac voltage to the ac power unit 101, so that the ac power unit 101 may normally operate; the first end of the bidirectional DC/DC module 130 also inputs the first direct voltage, and the second end of the bidirectional DC/DC module 130 outputs the second direct voltage; and the second DC voltage is lower than the first DC voltage, that is, the working mode of the bidirectional DC/DC module 130 is a step-down mode when the PFC converter 110 is operating normally, so that the second DC voltage output by the bidirectional DC/DC module 130 is the working voltage of the DC power utilization unit 102 and the energy storage module 140, so that the DC power utilization unit 102 can work normally and the energy storage module 140 can store power normally. Optionally, the inverter module 120 is a DC/AC converter, and the second direct current voltage is 24V, but the utility model is not limited thereto.

More specifically, the priority of electricity consumption of the dc power consumption unit 102 is higher than the priority of electricity storage of the energy storage module 140, so as to ensure that the dc power consumption unit 102 works normally; and under the condition that the direct current power consumption unit 102 works normally, the bidirectional DC/DC module 130 transmits the second direct current voltage to the energy storage module 140, so that the energy storage module 140 stores electricity, and the energy storage module 140 can be used as a standby power source to supply power to the alternating current power consumption unit 101 and the direct current power consumption unit 102 when the PFC converter 110 is abnormal. Optionally, the electricity storage efficiency of the energy storage module 140 is inversely proportional to the electricity consumption efficiency of the dc electricity consumption unit 102, so as to preferentially meet the electricity consumption requirement of the dc electricity consumption unit 102, thereby further preferentially ensuring that the dc electricity consumption unit 102 works normally. Optionally, the energy storage module 140 includes one or a combination of a storage battery and a super capacitor, so that the energy storage module 140 has a strong energy storage capacity, thereby being capable of meeting the continuous power demand of the ac power utilization unit 101 and the dc power utilization unit 102 when the PFC converter 110 is abnormal; the number and the storage capacity of the storage battery and the super capacitor can be determined according to specific electricity requirements, but the utility model is not limited thereto.

Specifically, in this embodiment, when the utility power is disconnected and/or the PFC converter 110 is damaged, the PFC converter 110 is abnormal, and the energy storage module 140 serving as the backup power source transmits the third dc voltage to the dc power unit 102, so as to ensure that the dc power unit 102 can still work normally; meanwhile, the energy storage module 140 may further transmit the third DC voltage to the bidirectional DC/DC module 130, and the second end of the bidirectional DC/DC module 130 inputs the third DC voltage, and the first end of the bidirectional DC/DC module 130 outputs the fourth DC voltage to the inverter module 120. More specifically, the third DC voltage is lower than the fourth DC voltage, that is, the operation mode of the bidirectional DC/DC module 130 is a boost mode when the PFC converter 110 is abnormal, so that the fourth DC voltage output by the bidirectional DC/DC module 130 is the operation voltage of the inverter module 120, and the inverter module 120 can work normally. Optionally, the third dc voltage is equal to the second dc voltage, and is 24V; the fourth dc voltage is equal to the first dc voltage and is 400V, but the utility model is not limited thereto.

Further, when the PFC converter 110 is abnormal, the inverter module 120 is configured to convert the fourth dc voltage into a second ac voltage, so as to supply power to the ac power unit 101, thereby ensuring that the ac power unit 101 can still work normally. Optionally, the second ac voltage is equal to the first ac voltage, both of which are the working voltages of the ac power unit 101, but the utility model is not limited thereto.

As can be seen from the above, when the PFC converter 110 is abnormal, the energy storage module 140 and the bidirectional DC/DC module 130 can supply power to the DC power unit 102 and the ac power unit 101, that is, the energy storage module 140 and the bidirectional DC/DC module 130 can form a UPS device in this embodiment; unlike the prior art UPS device in which both the input and output are ac voltages, the UPS device in this embodiment has both dc voltages. More specifically, the bidirectional DC/DC module 130 may convert the first DC voltage output from the PFC converter 110 into the second DC voltage when the PFC converter 110 is operating normally, or may convert the third DC voltage output from the energy storage module 140 into the fourth DC voltage when the PFC converter 110 is operating abnormally; it can be seen that, in this embodiment, through the cooperation of the PFC converter 110 and the bidirectional DC/DC module 130, the bidirectional DC/DC module 130 can be multiplexed to the maximum extent, so as to optimize the configuration of the power supply system, so that the power supply system only includes four components of the PFC converter 110, the inverter module 120, the bidirectional DC/DC module 130 and the energy storage module 140, and can supply power to the DC power utilization unit 102 and the ac power utilization unit 101 in any case; compared with the design scheme that the existing power supply system at least comprises a single-phase transformer, an AC/DC converter connected with the single-phase transformer, an AC/DC converter in UPS equipment, a battery pack, a DC/AC converter and an AC/DC converter connected with the UPS equipment, the number of components in the power supply system can be effectively reduced, the manufacturing cost of the power supply system is reduced, and the size of the power supply system is reduced.

With continued reference to fig. 1, the power supply system further includes: one end of the bidirectional Buck Boost module 150 is connected with the energy storage module 140, and the other end of the bidirectional Buck Boost module is connected with the bidirectional DC/DC module 130 and the direct current power utilization unit 102; and the circuit structure of the bidirectional Buck Boost module 150 is a bidirectional Buck-Boost circuit.

Specifically, in this embodiment, when the PFC converter 110 is abnormal, and the energy storage module 140 as the backup power source outputs the third dc voltage, that is, discharges, the bidirectional Buck Boost module 150 may control the third dc voltage to be constant voltage and not to decrease or increase with the change of the electric quantity in the energy storage module 140, that is, the bidirectional Buck Boost module 150 plays a role in stabilizing voltage. When the PFC converter 110 operates normally, the bidirectional Buck Boost module 150 may adjust the second DC voltage to be input to the energy storage module 140 to be higher (for example, to DC 48V), so as to improve the power storage efficiency of the energy storage module 140 while ensuring that the energy storage module 140 operates normally, but the utility model is not limited thereto.

Furthermore, in some embodiments, the power supply system further comprises: a BATTERY Management System (BMS) MANAGEMENT SYSTEM, connected to the energy storage module 140, is configured to monitor the electric quantity of the energy storage module 140, and switch the power storage mode and the discharging mode of the energy storage module 160, but the utility model is not limited thereto.

In summary, according to the power supply system provided in the embodiment, a new design scheme is adopted, and the PFC converter is used to replace a traditional single-phase transformer, so that the mains voltage can be converted into the first dc voltage. When the PFC converter normally operates, the inversion module can convert the first direct-current voltage into first alternating-current voltage so as to supply power to the alternating-current power utilization unit; the bidirectional DC/DC module can convert the first direct current voltage into the second direct current voltage so as to supply power to the direct current power utilization unit and enable the energy storage module to store electricity. When the PFC converter is abnormal, the energy storage module can be used for conveying third direct-current voltage to the bidirectional DC/DC module and the direct-current power utilization unit so as to supply power to the alternating-current power utilization unit and the direct-current power utilization unit. In the embodiment, through the cooperation of the PFC converter and the bidirectional DC/DC module, the bidirectional DC/DC module can be multiplexed to the greatest extent, so that the configuration of the power supply system is optimized, the power supply system can only comprise four components, namely the PFC converter, the inversion module, the bidirectional DC/DC module and the energy storage module, the number of the components in the power supply system is effectively reduced, and meanwhile, the manufacturing cost of the power supply system and the size of the power supply system can be reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A power supply system, comprising:

2. The power supply system of claim 1, wherein the bi-directional DC/DC module comprises a first end and a second end, the first end being connected to the PFC converter and the inverter module, the second end being connected to the energy storage module and the direct current power unit; and one of the first end and the second end is an input end of the bidirectional DC/DC module, the other is an output end of the bidirectional DC/DC module.

3. The power supply system of claim 2, wherein the first terminal is an input terminal of the bi-directional DC/DC module and the second terminal is an output terminal of the bi-directional DC/DC module when the PFC converter is operating normally; the bidirectional DC/DC module is used for converting the first direct-current voltage into the second direct-current voltage and transmitting the second direct-current voltage to the direct-current power utilization unit and the energy storage module so as to supply power to the direct-current power utilization unit and enable the energy storage module to store electric energy.

4. A power supply system according to claim 3, characterized in that the second direct voltage is lower than the first direct voltage.

5. A power supply system according to claim 3, characterized in that the priority of the power consumption of the direct current power consumption unit is higher than the priority of the power storage of the energy storage module.

6. The power supply system of claim 5, wherein the energy storage efficiency of the energy storage module is inversely proportional to the power efficiency of the dc power unit.

7. The power supply system of claim 2, wherein the second terminal is an input terminal of the bidirectional DC/DC module and the first terminal is an output terminal of the bidirectional DC/DC module when the PFC converter is abnormal; the bidirectional DC/DC module is used for converting the third direct-current voltage into a fourth direct-current voltage and transmitting the fourth direct-current voltage to the inversion module so as to supply power to the alternating-current power utilization unit through the inversion module.

8. The power supply system of claim 7, wherein the third dc voltage is lower than the fourth dc voltage, and the third dc voltage is equal to the second dc voltage, and the fourth dc voltage is equal to the first dc voltage.

9. The power supply system of claim 7, wherein the inverter module is further configured to convert the fourth dc voltage to a second ac voltage to power the ac power unit; and the second alternating voltage is equal to the first alternating voltage.

10. The power supply system of claim 1, wherein the PFC converter comprises:

And the input end of the rectifying unit is connected with the filtering unit, and the output end of the rectifying unit is connected with the inversion module and the bidirectional DC/DC module and is used for converting the mains voltage with noise filtered into the first direct current voltage.

11. The power supply system of claim 1, further comprising: and one end of the bidirectional Buck Boost module is connected with the energy storage module, and the other end of the bidirectional Buck Boost module is connected with the bidirectional DC/DC module and the direct current power utilization unit.

12. The power supply system of claim 1, further comprising: and the battery management system is connected with the energy storage module.

13. The power supply system of claim 1, wherein the energy storage module comprises one or a combination of a battery and a supercapacitor.