CN115347638A - Battery power supply starting circuit and welding machine - Google Patents

Battery power supply starting circuit and welding machine Download PDF

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Publication number
CN115347638A
CN115347638A CN202210957512.1A CN202210957512A CN115347638A CN 115347638 A CN115347638 A CN 115347638A CN 202210957512 A CN202210957512 A CN 202210957512A CN 115347638 A CN115347638 A CN 115347638A
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CN
China
Prior art keywords
module
battery
relay
electrically connected
control
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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
CN202210957512.1A
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Chinese (zh)
Inventor
不公告发明人
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.)
Hugong Intelligent Technology Suzhou Co ltd
Original Assignee
Hugong Intelligent Technology Suzhou 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 Hugong Intelligent Technology Suzhou Co ltd filed Critical Hugong Intelligent Technology Suzhou Co ltd
Priority to CN202210957512.1A priority Critical patent/CN115347638A/en
Publication of CN115347638A publication Critical patent/CN115347638A/en
Pending legal-status Critical Current

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    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • H02M1/344—Active dissipative snubbers
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention discloses a battery-powered starting circuit and a welding machine. The battery-powered startup circuit comprises: a battery connection port; a voltage regulation module; a control module; the slow starting branch comprises a current limiting module and a first switch module which are connected in series, and the switch module is configured to be conducted according to the first control signal; and the at least one second switch module is connected between the battery connecting port and the electric equipment and is configured to be conducted according to the second control signal. According to the embodiment of the invention, the first switch module and the second switch module are controlled through the first control signal and the second control signal generated by the control module, and different modules of the battery power supply starting circuit are controlled in a time-sharing manner according to different generation times of the first control signal and the second control signal, so that the influence of rear-stage power utilization equipment on the battery is avoided.

Description

Battery power supply starting circuit and welding machine
Technical Field
The invention relates to the technical field of battery power supply starting, in particular to a battery power supply starting circuit and a welding machine.
Background
With the development of inverter welding power source technology, the demand for inverter welding power sources is increasing. The domestic previous welding power supply only has a single power grid power supply mode, and the machine cannot be used in emergency outdoors or in a power failure state, so that the machine is inconvenient to use outdoors.
In order to meet the use requirements of products, a welder which can be powered by a battery needs to be developed. However, the battery powered welder generates reverse voltage to affect the battery during starting and working.
Disclosure of Invention
The invention provides a battery-powered starting circuit and a welding machine, which are used for avoiding the influence of the welding machine on a battery during starting and working.
According to an aspect of the present invention, there is provided a battery-powered startup circuit, comprising:
a battery connection port for connecting a battery;
the input end of the voltage regulating module is electrically connected with the battery connecting port, and the voltage regulating module is used for regulating and outputting the voltage value of the battery;
the control module is electrically connected with the output end of the voltage regulating module and used for outputting a first control signal within preset time after the voltage regulating module starts to output and outputting a second control signal after the preset time;
the slow starting branch is connected between the battery connecting port and the electric equipment and comprises a current limiting module and a first switch module which are connected in series, and the switch module is configured to be switched on according to the first control signal;
and the at least one second switch module is connected between the battery connecting port and the electric equipment and is configured to be conducted according to the second control signal.
Optionally, the first switch module comprises a first relay;
after the switch of the first relay is connected with the current limiting module in series, the switch of the first relay is connected between the battery connecting port and the electric equipment;
and the coil of the first relay is connected between the output end of the voltage regulating module and the control module.
Optionally, the battery powered start-up circuit further comprises:
a first control unit; the first end of the coil of the first relay is electrically connected with the output end of the voltage regulating module, the first end of the first control unit is electrically connected with the second end of the coil of the first relay, the second end of the first control unit is grounded, and the control end of the first control unit is electrically connected with the control module.
Optionally, the current limiting module comprises at least two thermistors connected in parallel.
Optionally, the battery power supply starting circuit further includes an anti-reflux module, and the slow starting branch and the second switch module are both electrically connected to the electric device through the anti-reflux module.
Optionally, the backflow prevention module comprises at least two first diodes connected in parallel;
the anode of the first diode is electrically connected with the slow start branch and the second switch module, and the cathode of the first diode is electrically connected with the electric equipment.
Optionally, the second switching unit comprises a second relay;
the switch of the second relay is connected between the battery connecting port and the electric equipment;
and the coil of the second relay is connected between the output end of the voltage regulating module and the control module.
Optionally, the battery powered start-up circuit further comprises:
a second control unit; the first end of the coil of the second relay is electrically connected with the output end of the voltage regulating module, the first end of the second control unit is electrically connected with the second end of the coil of the second relay, the second end of the second control unit is grounded, and the control end of the second control unit is electrically connected with the control module.
Optionally, the battery powered start-up circuit further comprises:
the input end of the voltage regulating module is electrically connected with the battery connecting port through the second diode;
wherein an anode of the second diode is electrically connected to the battery connection port, and a cathode of the second diode is electrically connected to the voltage regulation module.
According to another aspect of the present invention, a welder is provided. The welder includes the battery powered start-up circuit described in any of the above embodiments.
According to the technical scheme of the embodiment of the invention, the first switch module and the second switch module are controlled through the first control signal and the second control signal generated by the control module, different modules of the battery power supply starting circuit are subjected to time-sharing control according to different time generated by the first control signal and the second control signal, and the influence of rear-stage power utilization equipment on the battery is avoided.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a hardware structure of a battery-powered starting circuit according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a battery-powered startup circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a hardware structure of another battery-powered startup circuit according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic diagram of a hardware structure of a battery-powered startup circuit according to an embodiment of the present invention. The battery-powered startup circuit includes:
a battery connection port 120 for connecting the battery 110;
the input end of the voltage regulating module 130 is electrically connected with the battery connection port 120, and the voltage regulating module 130 is used for regulating and outputting the voltage value of the battery 110;
the control module 140 is electrically connected with the output end of the voltage regulating module 130, and is used for outputting a first control signal within a preset time after the voltage regulating module 130 starts outputting, and outputting a second control signal after the preset time;
the slow start branch 150 is connected between the battery connection port 120 and the electric device 190, the slow start branch 150 includes a current limiting module 160 and a first switch module 170 which are connected in series, and the switch module is configured to be turned on according to a first control signal;
and at least one second switching module 180 connected between the battery connection port 120 and the electric device 190 and configured to be turned on according to a second control signal.
Specifically, the battery 110 powers the battery powered startup circuitry. The battery 110 is connected to the voltage regulating module 130 through the battery connection port 120, and the voltage output by the battery 110 is regulated by the voltage regulating module 130 and then output to the control module 140 to supply power to the control module 140. Since the output voltage of the battery 110 is higher than the operating voltage of the control module 140. Therefore, the output voltage of the battery 110 needs to be adjusted by the voltage adjusting module 130 and then output to the control module 140. The voltage regulating module 140 may be composed of, for example, a battery-powered voltage boosting unit and a switching power supply, where an input end of the battery-powered voltage boosting unit is an input end of the voltage regulating module 140, an output end of the switching power supply is an output end of the voltage regulating module 140, and an output end of the battery-powered voltage boosting unit is electrically connected to the switching power supply; since the switching power supply has a high requirement for the input voltage during operation, the output voltage of the battery 110 is boosted by the boosting unit and then output to the switching power supply, and the switching power supply reduces the voltage and outputs the reduced voltage to the control module 140. When the control module 140 is in operation, it first detects the battery-powered startup circuit. Illustratively, a voltage detection unit is disposed at the battery connection port 120, and the control module 140 generates a first control signal when the voltage detection unit detects a voltage signal of the battery 110. The first control signal may include an on signal and an off signal. The first control signal may be a high-level signal, or may be a control signal of another form. The first switch module 170 in the slow start branch 150 responds to the turn-on signal of the first control signal, and the first switch module 170 turns on the slow start branch 150 according to the turn-on signal to charge the capacitor in the rear-stage electric device 190, so as to prepare for the work of the electric device 190. The control module 140 generates the turn-off signal of the first control signal within a preset time after the first switch module 170 is turned on. It should be noted that the preset time is the charging time required by the capacitor in the secondary electric device 190, and since the charging current needs to be limited when the capacitor is charged, the current limiting module 160 is disposed in the slow start branch 150 for limiting the charging current of the capacitor. The first switching module 170 turns off the soft start branch 150 in response to the turn-off signal of the first control signal. After the preset time, the control module 140 generates a second control signal. The second switch module 180 is turned on in response to the second control signal to supply power for the operation of the secondary electric device 190.
In the embodiment of the present invention, the first switch module 170 and the second switch module 180 are controlled by the first control signal and the second control signal generated by the control module 140, and different modules of the battery power supply starting circuit are controlled in a time-sharing manner according to different times of the first control signal and the second control signal, so as to avoid the influence of the rear-stage electric equipment 190 on the battery 110.
Optionally, the first switching module 170 includes a first relay;
the switch of the first relay is connected in series with the current limiting module 160 and then connected between the battery connection port 120 and the electric equipment 190;
the coil of the first relay is connected between the output of the voltage regulation module 120 and the control module 140.
Specifically, the first relay may be connected between the current limiting module 160 and the electric device 190, where the battery connection port 120 is connected to the current limiting module 160, the current limiting module 160 is connected to the first relay, and the first relay is connected to the electric device 190; the first relay may also be connected between the battery connection port 120 and the current limiting module 160, in which case the battery connection port 120 is connected to the first relay, the first relay is connected to the current limiting module 160, and the current limiting module 160 is connected to the electric device 190. The voltage regulation module 120 is used to power the operation of the first relay. The first relay is used for controlling the on and off of the soft start branch 150. A first relay may be coupled to the control module 140, and the first relay may be responsive to a control signal from the control module 140 to control the slow start branch 150 to be turned on and off. The current limiting module 160 is connected in series with the first relay, and when the capacitor of the electric device 190 is charged, the current in the slow start branch 150 is limited, so that the electric device 190 is prevented from being damaged.
Fig. 2 is a schematic circuit diagram of a battery-powered startup circuit according to an embodiment of the present invention. Referring to fig. 2, the battery powered start-up circuit further comprises:
a first control unit 210; a first end of the coil of the first relay is electrically connected to the output end of the voltage regulating module 130, a first end of the first control unit 210 is electrically connected to a second end of the coil of the first relay, a second end of the first control unit 210 is grounded, and a control end of the first control unit 210 is electrically connected to the control module 140.
Specifically, the first control unit 210 may be formed by a triode, or may be formed by a MOS transistor or another amplifying device, which is not limited in this embodiment. The first control unit 210 is connected between the voltage regulating module 130 and the first relay, and is configured to amplify the control signal output by the control module 140. Since the driving current of the control signal output by the control module 140 is small, the driving requirement of the first relay cannot be met. Therefore, the control signal output by the control module 140 needs to be amplified. For example, when the amplification factor of a single transistor cannot meet the requirement, the control signal may be amplified by connecting two transistors in series. Such an arrangement can amplify the driving current of the driving signal output by the control module 140, so as to satisfy the driving current required by the first relay.
Optionally, current limiting module 160 includes at least two thermistors connected in parallel.
Specifically, the consumer 190 has a capacitance. Since the capacitor can be considered as a short circuit state when charged, a large current is generated. Therefore, a thermistor is required in series with the powered device 190 to limit the current in the soft start branch 150. The thermistor is a positive temperature coefficient thermistor, the resistance value of which increases stepwise with the increase of the body temperature, and the resistance increases as the temperature increases. When the capacitor is charged, the current on the slow start branch 150 increases, the temperature of the thermistor increases, and the resistance value of the thermistor increases, so that the current flowing through the slow start branch 150 is reduced, and the capacitor in the electric equipment 190 is prevented from being damaged.
Fig. 3 is a schematic diagram of a hardware structure of another battery-powered startup circuit according to an embodiment of the present invention. Referring to fig. 3, the battery-powered starting circuit further includes a reverse-flow prevention module 310, and the slow starting branch 150 and the second switch module 180 are electrically connected to the electric device 190 through the reverse-flow prevention module 310.
Specifically, when the power consumption device 190 is damaged, a reverse current and an overvoltage may be generated, and when the reverse current and the overvoltage exist in the circuit, the reverse current and the overvoltage may affect the battery 110 and even damage the battery 110. Therefore, the reverse current prevention module 310 is disposed in the soft start branch 150, the second switch module 180 and the power consumption device 190 to prevent the reverse current and the overvoltage from impacting the battery 110.
Optionally, the anti-backflow module 310 comprises at least two first diodes connected in parallel;
the anode of the first diode is electrically connected to the slow start branch 150 and the second switch module 180, and the cathode of the first diode is electrically connected to the electric device 190.
Specifically, the diode is an electronic device made of semiconductor materials and has unidirectional conductivity, namely when forward voltage is applied to the anode of the diode, the diode is conducted; when a reverse voltage is applied to the anode, the diode is turned off. The anode of the first diode is electrically connected to the slow start branch 150 and the second switch module 180, and the cathode of the first diode is electrically connected to the electric device 190. When the boost circuit in the electric equipment 190 generates reverse current, the reverse voltage is applied to the first diode, and the first diode is cut off, so that the connection between the electric equipment 190 and the battery 110 is disconnected, and the battery 110 is prevented from being damaged.
Optionally, the second switching module 180 comprises a second relay;
the switch of the second relay is connected between the battery connection port 120 and the electric equipment 190;
the coil of the second relay is connected between the output of the voltage regulation module 130 and the control module 140.
Specifically, one end of the switch of the second relay is connected to the battery connection port 120, and the other end is connected to the electric device 190. Since the electric current of the electric device 190 is large when operating, the second relay is a large current relay. For example, when the current of a single relay cannot satisfy the working current of the electric device 190, the current requirement of the electric device 190 may be satisfied by connecting a plurality of relays in parallel. The switch of the second relay is used to turn on or off the connection of the battery connection port 120 to the electric device 190. One end of the coil of the second relay is connected to the output terminal of the voltage adjusting module 130, and the other end is connected to the control module 140. The voltage regulation module 120 powers the second relay. The coil of the second relay controls the switch of the second relay to be turned on in response to a second control signal of the control module 140.
In the embodiment of the present invention, the control module 140 controls the second relay, so as to control the on/off of the electric device 190 and the battery connection port 120. When the coil of the second relay receives the second control signal of the control module 140, the switch of the second relay is controlled to be turned on. The first control signal and the second control signal are generated at different time, and the second control signal is generated after the first control signal. Therefore, the second relay is conducted after the first relay is disconnected, and therefore time-sharing control over the battery power supply starting circuit is achieved.
Optionally, the battery powered start-up circuit further comprises:
a second control unit 220; a first end of a coil of the second relay is electrically connected to the output end of the voltage regulating module 130, a first end of the second control unit 220 is electrically connected to a second end of the coil of the second relay, a second end of the second control unit 220 is grounded, and a control end of the second control unit 220 is electrically connected to the control module 140.
Specifically, the second control unit 220 may be formed by a triode, or may be formed by a MOS transistor or other amplifying device, which is not limited in this embodiment. The second control unit 220 is connected between the voltage regulating module 130 and the second relay, and is configured to amplify the control signal output by the control module 140. Since the driving current of the control signal output by the control module 140 is small, the driving requirement of the second relay cannot be met. Therefore, the control signal output by the control module 140 needs to be amplified. For example, when the amplification factor of a single transistor cannot meet the requirement, the control signal may be amplified in a form of connecting two transistors in series. Such an arrangement can amplify the driving current of the driving signal output by the control module 140, and satisfy the driving current required by the second relay to operate.
Optionally, the battery powered start-up circuit further comprises:
a second diode through which an input terminal of the voltage adjusting module 130 is electrically connected to the battery connection port 120;
wherein the anode of the second diode is electrically connected to the battery connection port 120, and the cathode of the second diode is electrically connected to the voltage regulating module 130.
Specifically, the voltage regulation module 130 is connected between the voltage regulation module 130 and the battery connection port 120. Since the battery 110 may be damaged when it is reversely connected. Therefore, the second diode is disposed between the voltage regulating module 130 and the battery connection port 120 to prevent the reverse connection of the battery 110 and damage to the battery 110.
The embodiment of the invention also provides a welding machine. The welder includes the battery powered start-up circuit provided in any of the implementations above. The welding machine provided by the embodiment has the beneficial effects of the battery-powered starting circuit provided by any of the above embodiments, and the details are not repeated herein.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired result of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery-powered startup circuit, comprising:
a battery connection port for connecting a battery;
the input end of the voltage regulating module is electrically connected with the battery connecting port, and the voltage regulating module is used for regulating and outputting the voltage value of the battery;
the control module is electrically connected with the output end of the voltage regulating module and used for outputting a first control signal within preset time after the voltage regulating module starts to output and outputting a second control signal after the preset time;
the slow starting branch is connected between the battery connecting port and the electric equipment and comprises a current limiting module and a first switch module which are connected in series, and the switch module is configured to be switched on according to the first control signal;
and the at least one second switch module is connected between the battery connecting port and the electric equipment and is configured to be conducted according to the second control signal.
2. The battery-powered startup circuit of claim 1, wherein the first switching module comprises a first relay;
after the switch of the first relay is connected with the current limiting module in series, the first relay is connected between the battery connecting port and the electric equipment;
and the coil of the first relay is connected between the output end of the voltage regulating module and the control module.
3. The battery-powered startup circuit of claim 2, further comprising:
a first control unit; the first end of the coil of the first relay is electrically connected with the output end of the voltage regulating module, the first end of the first control unit is electrically connected with the second end of the coil of the first relay, the second end of the first control unit is grounded, and the control end of the first control unit is electrically connected with the control module.
4. The battery-powered startup circuit of claim 1, wherein the current limiting module comprises at least two thermistors connected in parallel.
5. The battery-powered starting circuit of claim 1, further comprising an anti-backflow module, wherein the slow start branch and the second switch module are electrically connected to the electrical device through the anti-backflow module.
6. The battery-powered startup circuit of claim 5, wherein the anti-backflow module comprises at least two first diodes connected in parallel;
the anode of the first diode is electrically connected with the slow start branch and the second switch module, and the cathode of the first diode is electrically connected with the electric equipment.
7. The battery-powered startup circuit of claim 1, wherein the second switching unit comprises a second relay;
the switch of the second relay is connected between the battery connecting port and the electric equipment;
and the coil of the second relay is connected between the output end of the voltage regulating module and the control module.
8. The battery-powered startup circuit of claim 7, wherein the battery-powered startup circuit further comprises:
a second control unit; the first end of the coil of the second relay is electrically connected with the output end of the voltage regulating module, the first end of the second control unit is electrically connected with the second end of the coil of the second relay, the second end of the second control unit is grounded, and the control end of the second control unit is electrically connected with the control module.
9. The battery-powered startup circuit of claim 1, further comprising:
the input end of the voltage regulating module is electrically connected with the battery connecting port through the second diode;
wherein an anode of the second diode is electrically connected to the battery connection port, and a cathode of the second diode is electrically connected to the voltage regulation module.
10. A welding machine comprising a battery powered start-up circuit as claimed in any one of claims 1 to 9.
CN202210957512.1A 2022-08-10 2022-08-10 Battery power supply starting circuit and welding machine Pending CN115347638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210957512.1A CN115347638A (en) 2022-08-10 2022-08-10 Battery power supply starting circuit and welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210957512.1A CN115347638A (en) 2022-08-10 2022-08-10 Battery power supply starting circuit and welding machine

Publications (1)

Publication Number Publication Date
CN115347638A true CN115347638A (en) 2022-11-15

Family

ID=83951800

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210957512.1A Pending CN115347638A (en) 2022-08-10 2022-08-10 Battery power supply starting circuit and welding machine

Country Status (1)

Country Link
CN (1) CN115347638A (en)

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