CN113178903A - Power supply system and electronic equipment - Google Patents

Power supply system and electronic equipment Download PDF

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Publication number
CN113178903A
CN113178903A CN202110379323.6A CN202110379323A CN113178903A CN 113178903 A CN113178903 A CN 113178903A CN 202110379323 A CN202110379323 A CN 202110379323A CN 113178903 A CN113178903 A CN 113178903A
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CN
China
Prior art keywords
power
module
terminal
control module
bms control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110379323.6A
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Chinese (zh)
Inventor
徐新祥
张锦兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Topband Lithium Battery Co ltd
Original Assignee
Shenzhen Topband Lithium Battery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Topband Lithium Battery Co ltd filed Critical Shenzhen Topband Lithium Battery Co ltd
Priority to CN202110379323.6A priority Critical patent/CN113178903A/en
Publication of CN113178903A publication Critical patent/CN113178903A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to a power supply system and an electronic device, including: the battery pack, the BMS control module and the connecting end, a first power supply path for connecting the battery pack and the BMS control module, a second power supply path for connecting the connecting end and the BMS control module, a third power supply path for connecting the battery pack and the connecting end and a data path for connecting the battery pack and the BMS control module; the first power path comprises a first power conversion module, a first switch and a first isolation module which are connected with each other in a cascade way, wherein the first switch is connected with a first level output end of the BMS control module; the second power supply path comprises a second power supply conversion module, a power-on detection module and a second isolation module which are connected in a cascade mode, wherein the BMS control module is connected with the power-on detection module; the third power path includes a second switch and a bidirectional inverter module cascade-connected to each other, the second switch being connected to the BMS control module. The invention can prolong the service life of the battery, and has simple circuit and low cost.

Description

Power supply system and electronic equipment
Technical Field
The present invention relates to the field of power electronics technologies, and in particular, to a power supply system and an electronic device.
Background
Currently, the off-grid energy storage system usually needs to be started electrically above the external UPS, which results in complex system circuit and increased cost. In addition, when the off-grid state of the currently-used off-grid energy storage system is in the off-grid state, the internal working module is usually powered by an internal battery to work, and long-term work of the internal working module can cause consumption of electric energy of the battery, so that the service life of the battery is reduced.
Disclosure of Invention
The present invention is directed to a power supply system and an electronic device, which overcome some of the above technical drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a power supply system comprising: a battery pack, a BMS control module and a connection terminal for connecting a load or a grid input, an
A first power path connecting a power terminal of the battery pack and a power terminal of the BMS control module, a second power path connecting the connection terminal and a power terminal of the BMS control module, a third power path connecting a power terminal of the battery pack and the connection terminal, and a data path connecting a data terminal of the battery pack and a data terminal of the BMS control module;
the first power path includes a first power conversion module, a first switch and a first isolation module which are cascade-connected to each other, wherein the first switch is connected to a first level output terminal of the BMS control module and configured to be turned off when the BMS control module outputs a first level;
the second power path includes a second power conversion module, a power-on detection module, and a second isolation module, which are cascade-connected to each other, wherein the BMS control module is connected to the power-on detection module and configured to output the first level upon receiving a power-on detection level of the power-on detection module;
the third power path includes a second switch and a bidirectional inverter module cascade-connected to each other, wherein the second switch is connected to a second level output terminal of the BMS control module and configured to be turned on when the BMS control module outputs the second level.
Preferably, the second switch includes a first normally open contactor and a second normally open contactor;
a first contact connecting end of the first normally open contactor is connected with a positive power supply output end of the battery pack, a second contact connecting end of the first normally open contactor is connected with the bidirectional inverter module, and a coil of the first normally open contactor is connected with a second level output end of the BMS control module;
and a first contact connecting end of the second normally open contactor is connected with a negative power output end of the battery pack, a second contact connecting end of the second normally open contactor is connected with the bidirectional inversion module, and a coil of the second normally open contactor is connected with a second level output end of the BMS control module.
Preferably, the first power path further comprises a first circuit breaker,
the first end of the first circuit breaker is connected with the power end of the battery pack, and the second end of the first circuit breaker is connected with the input end of the first power conversion module.
Preferably, the first switch includes a first relay,
the first relay is connected with the output end of the first power conversion module through a first contact connecting end, the first isolation module is connected with a second contact connecting end of the first relay, and a coil of the first relay is connected with a first level output end of the BMS control module.
Preferably, the first power conversion module includes a DCDC converter, and the first contact connection end of the first relay is connected to the positive output end of the DCDC converter.
Preferably, the first isolation module includes a first diode, an anode of the first diode is connected to the first contact connection terminal of the first relay, and a cathode of the first diode is connected to a power supply terminal of the BMS control module.
Preferably, the second power supply path further comprises a second circuit breaker;
the first end of the second circuit breaker is connected with the connecting end, and the second end of the second circuit breaker is connected with the input end of the second power supply conversion module.
Preferably, the second power conversion module includes an ACDC converter, an input end of the ACDC converter is connected to the second end of the second circuit breaker, a positive output end of the ACDC converter is connected to the first end of the second isolation module and the first end of the power-on detection module, a negative output end of the ACDC converter is connected to the second end of the power-on detection module, and the second end of the second isolation module is connected to a power supply end of the BMS control module.
Preferably, the power-on detection module includes a second relay, a first end of a coil of the second relay is connected to the positive output end of the ACDC converter, a second end of the coil of the second relay is connected to the negative output end of the ACDC converter, and a first contact connection end and a second contact connection end of the second relay are respectively connected to the BMS control module.
Preferably, the second isolation module comprises a second diode, an anode of the second diode is connected to the positive output terminal of the ACDC converter, and a cathode of the second diode is connected to the power supply terminal of the BMS control module.
The present invention also provides an electronic device including the power supply system as described in any one of the above.
The power supply system and the electronic equipment have the following beneficial effects: the service life of the battery is prolonged, and the circuit is simple and low in cost.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of an embodiment of a power system;
fig. 2 is a schematic circuit diagram of an embodiment of a power system according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, in a first embodiment of a power supply system of the present invention, includes: a battery pack 110, a BMS control module 120, and a connection terminal 160 for connecting the load 200 or the grid input 300, as well as a first power path 130 connecting the power terminal of the battery pack 110 with the power terminal of the BMS control module 120, a second power path 140 connecting the connection terminal 160 with the power terminal of the BMS control module 120, a third power path 150 connecting the power terminal of the battery pack 110 with the connection terminal 160, and a data path 170 connecting the data terminal of the battery pack 110 with the data terminal of the BMS control module 120; the first power path 130 includes a first power conversion module 131, a first switch 132, and a first isolation module 133 cascade-connected to each other, wherein the first switch 132 is connected to a first level output terminal of the BMS control module 120 and is configured to be turned off when the BMS control module 120 outputs a first level; the second power path 140 includes a second power conversion module 141, a power-on detection module 142, and a second isolation module 143 cascade-connected to each other, wherein the BMS control module 120 is connected to the power-on detection module 142 and configured to output a first level upon receiving a power-on detection level of the power-on detection module 142; the third power path 150 includes a second switch 151 and a bidirectional inverter module 152 cascade-connected to each other, wherein the second switch 151 is connected to a second level output terminal of the BMS control module 120 and is configured to be turned on when the BMS control module 120 outputs the second level. Specifically, when the system is operated, the battery pack 110 is connected and the connection terminal 160 thereof is connected to the load 200, the power output of the battery pack 110 supplies power to the BMS control module 120 through the first power path 130 formed by cascade-connecting the first power conversion module 131, the first switch 132, and the first isolation module 133. The power output of the battery pack 110 is converted by the first power conversion module 131 to obtain the required operating voltage of the BMS control module 120 to supply power to the BMS control module 120, and specifically, the power output is converted by the first power conversion module 131 and then sequentially input to the BMS control module through the first switch 132 and the first isolation module 133. After the BMS control module 120 is powered into an operating state through the first power path 130, it may receive data of the battery pack 110 through the data path 170 and output a corresponding control level according to an analysis result of the data, i.e., it may output a second level through its second level output terminal. The data path 170 may be a path formed by connecting a data terminal of the battery pack 110 to a data terminal of the BMS control module 120, and may include battery voltage acquisition data of the battery pack, temperature acquisition data of the battery pack, and current acquisition data of the battery pack, and the data acquisition process may adopt a currently commonly used acquisition technology. The second switch 151 in the third power path 150 is turned on after receiving the second level, and the third power path 150 starts to be turned on, at this time, the power output of the battery pack 110 supplies power to the load 200 through the third power path 150, so that the load 200 operates normally. Specifically, the bidirectional inverter module 152 in the third power path 150 performs voltage conversion to obtain the working voltage of the load 200 required by the operation of the load 200, so as to maintain the normal operation of the load 200. In one scenario, when the BMS control module 120 determines that the battery pack 110 is abnormal through the data of the battery pack 110 received by the data path 170 or determines that the battery pack 110 is in a long-term standby state through the data, the BMS control module outputs a first level through the first level output terminal to trigger the first switch 132 to be turned off, at this time, the first power path 130 is turned off, and the battery pack 110 stops supplying power to the BMS control module 120, so as to reduce power consumption of the battery pack 110. When the connection terminal 160 is connected to the grid input 300, the second power path 140 is turned on, and at this time, the ac input of the connection terminal 160 outputs the required power supply voltage to the BMS control module 120 after performing power conversion through the second power conversion module 141 in the second power path 140, and may be the output of the second power conversion module 141 sequentially input to the BMS control module 120 after passing through the power-on detection module 142 and the second isolation module 143. The BMS control module 120 operates at this time by the voltage provided by the second power path 140, which can also be understood as the BMS control module 120 operates by supplying power through the ac input at this time. When the second power path 140 is turned on, the power-on detection module 142 in the second power path 140 detects that the second power path 140 is in the on state at this time, and outputs a corresponding level to the BMS control module 120, and the BMS control module 120 outputs a first level through its first level output terminal when receiving the level, i.e., the power-on detection level, to trigger the first switch 132 to turn off, i.e., to turn off the first power path 130, and at this time, the power supply of the battery pack 110 to the BMS control module 120 through the first power path 130 is cut off. When the BMS control module 120 operates, the output of the second level triggers the second switch 151 to be turned on, and the ac input of the connection terminal 160 charges the battery pack 110 through the third power path 150. The bidirectional inverter module 152 converts an ac input of the power grid to obtain a charging voltage of the battery pack 110.
Alternatively, as shown in fig. 2, the second switch 151 includes a first normally open contactor 1511 and a second normally open contactor 1512; a first contact connection end of the first normally open contactor 1511 is connected to the positive power output end of the battery pack 110, a second contact connection end of the first normally open contactor 1511 is connected to the bidirectional inverter module 152, and a coil of the first normally open contactor 1511 is connected to a second level output end of the BMS control module 120; a first contact connection end of the second normally open contactor 1512 is connected to the negative power output end of the battery pack 110, a second contact connection end of the second normally open contactor 1512 is connected to the bidirectional inverter module 152, and a coil of the second normally open contactor 1512 is connected to a second level output end of the BMS control module 120. Specifically, the second switch 151 is composed of two normally open contactors, wherein the contact of the first normally open contactor 1511 is connected to the positive power output terminal of the battery pack 110, the contact of the second normally open contactor 1512 is connected to the negative power output terminal of the battery pack 110, and the coils of the first normally open contactor 1511 and the second normally open contactor are connected to the BMS control module 120, and are powered on at the second level output by the second level output terminal of the BMS control module 120. After the coils of the first normally open contactor 1511 and the second normally open contactor 1512 are powered on by the second level, the contacts thereof are respectively switched from the normally open state to the closed state.
Optionally, the first power path 130 further includes a first circuit breaker 134, a first end of the first circuit breaker 134 is connected to the power end of the battery pack 110, and a second end of the first circuit breaker 134 is connected to the input end of the first power conversion module 131. Specifically, the first power path 130 can be triggered to turn on or off by providing the first breaker 134. I.e. the operation of the power supply system can be triggered by closing the first circuit breaker 134.
Optionally, the first switch 132 includes a first relay K1, a first contact connection terminal of the first relay K1 is connected to the output terminal of the first power conversion module 131, a second contact connection terminal of the first relay K1 is connected to the first isolation module 133, and a coil of the first relay K1 is connected to the first level output terminal of the BMS control module 120. Specifically, the first switch 132 may employ a relay, i.e., a first relay K1, and the first power path 130 may be controlled to be in an on or off state by the closing or opening of a contact of a first relay K1, wherein a coil of the first relay K1 is connected to the BMS control module 120, which is powered on by a first level output by the BMS control module 120 to trigger the contact thereof to be closed or opened.
Optionally, the first power conversion module 131 includes a DCDC converter, and the first contact connection terminal of the first relay K1 is connected to the positive output terminal of the DCDC converter. Specifically, in the first power path 130, it performs voltage conversion on the power output of the battery pack 110 through the DCDC converter to obtain +24V and-24V voltage outputs, wherein the contact of the first relay K1 is connected to the +24V power output.
Alternatively, the first isolation module 133 includes a first diode, an anode of which is connected to the first contact connection terminal of the first relay K1, and a cathode of which is connected to the power supply terminal of the BMS control module 120. Specifically, the first power path 130 isolates the second power path 140 through the first isolation module 133, so as to prevent the power input in the second power path 140 from flowing backward to the first power path 130.
Optionally, the second power path 140 further comprises a second circuit breaker 144; a first end of the second breaker 144 is connected to the connection end 160, and a second end of the second breaker 144 is connected to an input end of the second power conversion module 141. Specifically, the second power path 140 can be triggered to turn on or off by providing a second circuit breaker 144. I.e. when the connection 160 is connected to the grid, it may trigger the operation of the power supply system by closing the second circuit breaker 144.
Optionally, the second power conversion module 141 includes an ACDC converter, an input terminal of the ACDC converter is connected to the second terminal of the second circuit breaker 144, a positive output terminal of the ACDC converter is connected to the first terminal of the second isolation module 143 and the first terminal of the power-on detection module 142, a negative output terminal of the ACDC converter is connected to the second terminal of the power-on detection module 142, and a second terminal of the second isolation module 143 is connected to the power terminal of the BMS control module 120. Specifically, the ac input of the connection terminal 160 is converted by the ACDC converter to obtain +24V and-24V voltage outputs, wherein the second isolation module 143 is connected to the positive output terminal of the ACDC converter, and the power-on detection module 142 is connected between the positive output terminal and the negative output terminal of the ACDC converter, and is configured to power on and output a power-on detection level when the ACDC converter outputs.
Optionally, the power-on detection module 142 includes a second relay K2, a first end of a coil of the second relay K2 is connected to the positive output terminal of the ACDC converter, a second end of a coil of the second relay K2 is connected to the negative output terminal of the ACDC converter, and a first contact connection end and a second contact connection end of the second relay K2 are respectively connected to the BMS control module 120. Specifically, in the power-on detection module 142, a coil of the second relay K2 is connected to the positive output end of the ACDC converter, a contact of the second relay K2 is connected to the BMS control module 120, and when the ACDC converter has a voltage output, the coil is powered on to trigger a contact action thereof to generate a corresponding level signal, i.e., a power-on detection level.
Optionally, the second isolation module 143 includes a second diode, an anode of the second diode is connected to the positive output terminal of the ACDC converter, and a cathode of the second diode is connected to the power supply terminal of the BMS control module 120. Specifically, the second power path 140 isolates the first power path 130 through the second isolation module 143, so as to prevent the power input in the first power path 130 from flowing backward to the second power path 140. Which is specifically isolated by a diode.
In addition, an electronic device of the present invention includes any of the above power supply systems, that is, it can supply power to an internal operating circuit through any of the above systems.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims (11)

1. A power supply system, comprising: a battery pack, a BMS control module and a connection terminal for connecting a load or a grid input, an
A first power path connecting a power terminal of the battery pack and a power terminal of the BMS control module, a second power path connecting the connection terminal and a power terminal of the BMS control module, a third power path connecting a power terminal of the battery pack and the connection terminal, and a data path connecting a data terminal of the battery pack and a data terminal of the BMS control module;
the first power path includes a first power conversion module, a first switch, and a first isolation module cascade-connected to each other, wherein the first switch is connected to a first level output terminal of the BMS control module and configured to be turned off when the BMS control module outputs a first level;
the second power path includes a second power conversion module, a power-on detection module, and a second isolation module, which are cascade-connected to each other, wherein the BMS control module is connected to the power-on detection module and configured to output the first level upon receiving a power-on detection level of the power-on detection module;
the third power path includes a second switch and a bidirectional inverter module cascade-connected to each other, wherein the second switch is connected to a second level output terminal of the BMS control module and configured to be turned on when the BMS control module outputs the second level.
2. The power system of claim 1, wherein the second switch comprises a first normally open contactor and a second normally open contactor;
a first contact connecting end of the first normally open contactor is connected with a positive power supply output end of the battery pack, a second contact connecting end of the first normally open contactor is connected with the bidirectional inverter module, and a coil of the first normally open contactor is connected with a second level output end of the BMS control module;
and a first contact connecting end of the second normally open contactor is connected with a negative power output end of the battery pack, a second contact connecting end of the second normally open contactor is connected with the bidirectional inversion module, and a coil of the second normally open contactor is connected with a second level output end of the BMS control module.
3. The power system of claim 1, wherein the first power path further comprises a first circuit breaker,
the first end of the first circuit breaker is connected with the power end of the battery pack, and the second end of the first circuit breaker is connected with the input end of the first power conversion module.
4. The power supply system of claim 1, wherein the first switch comprises a first relay,
the first relay is connected with the output end of the first power conversion module through a first contact connecting end, the first isolation module is connected with a second contact connecting end of the first relay, and a coil of the first relay is connected with a first level output end of the BMS control module.
5. The power system of claim 4, wherein the first power conversion module comprises a DCDC converter, and the first contact connection end of the first relay is connected to a positive output end of the DCDC converter.
6. The power supply system according to claim 4, wherein the first isolation module includes a first diode, an anode of the first diode is connected to the first contact connection terminal of the first relay, and a cathode of the first diode is connected to a power supply terminal of the BMS control module.
7. The power system of claim 1, wherein the second power path further comprises a second circuit breaker;
the first end of the second circuit breaker is connected with the connecting end, and the second end of the second circuit breaker is connected with the input end of the second power supply conversion module.
8. The power system of claim 7, wherein the second power conversion module comprises an ACDC converter, an input terminal of the ACDC converter is connected to the second terminal of the second circuit breaker, a positive output terminal of the ACDC converter is connected to the first terminal of the second isolation module and the first terminal of the power-on detection module, a negative output terminal of the ACDC converter is connected to the second terminal of the power-on detection module, and a second terminal of the second isolation module is connected to the power terminal of the BMS control module.
9. The power supply system according to claim 8,
the power-on detection module comprises a second relay, a first end of a coil of the second relay is connected with a positive output end of the ACDC converter, a second end of the coil of the second relay is connected with a negative output end of the ACDC converter, and a first contact connecting end and a second contact connecting end of the second relay are respectively connected with the BMS control module.
10. The power system of claim 8, wherein the second isolation module comprises a second diode, an anode of the second diode is connected to the positive output terminal of the ACDC converter, and a cathode of the second diode is connected to a power supply terminal of the BMS control module.
11. An electronic device characterized by comprising a power supply system according to any one of claims 1 to 10.
CN202110379323.6A 2021-04-08 2021-04-08 Power supply system and electronic equipment Pending CN113178903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110379323.6A CN113178903A (en) 2021-04-08 2021-04-08 Power supply system and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110379323.6A CN113178903A (en) 2021-04-08 2021-04-08 Power supply system and electronic equipment

Publications (1)

Publication Number Publication Date
CN113178903A true CN113178903A (en) 2021-07-27

Family

ID=76924799

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110379323.6A Pending CN113178903A (en) 2021-04-08 2021-04-08 Power supply system and electronic equipment

Country Status (1)

Country Link
CN (1) CN113178903A (en)

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