CN111525667A - Charging control circuit - Google Patents
Charging control circuit Download PDFInfo
- Publication number
- CN111525667A CN111525667A CN202010483083.XA CN202010483083A CN111525667A CN 111525667 A CN111525667 A CN 111525667A CN 202010483083 A CN202010483083 A CN 202010483083A CN 111525667 A CN111525667 A CN 111525667A
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- Prior art keywords
- control
- switch circuit
- node
- electrically connected
- circuit
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention provides a charging control circuit. The charging circuit comprises a charging circuit, a first switch circuit and a second switch circuit; the first end of the charging circuit is electrically connected with the first node, and the second end of the charging circuit is electrically connected with the second node. The first switch circuit comprises a first end, a second end and a control end, the first end of the first switch circuit is electrically connected with a first node, the second end of the first switch circuit is electrically connected with a second node, the control end of the first switch circuit is electrically connected with a third node, the second switch circuit comprises a first end, a second end and a control end, the first end of the second switch circuit is electrically connected with the third node, the second end of the second switch circuit is connected with a ground wire, and the control end of the second switch circuit is electrically connected with a control signal end. The first node is electrically connected with the electric signal input end, and the second node is electrically connected with the charging control end. The invention can effectively control the charging process and reduce the possibility of element damage in the first switch circuit.
Description
Technical Field
The invention relates to the technical field of circuit management, in particular to a charging control circuit.
Background
The electrolytic capacitor is a commonly used electrical element in a direct current motor control system, and in the process of charging the electrolytic capacitor, the impact current has the problem of instability, and the impact current at some moments is too large, so that other elements in a circuit can be affected, and the stability of the circuit is affected.
Disclosure of Invention
The embodiment of the invention provides a charging control circuit cabinet, which aims to solve the problem that stability is influenced by overlarge impact current in the charging process of the conventional electrolytic capacitor.
In order to solve the technical problem, the invention is realized as follows:
the embodiment of the invention provides a charging control circuit, which comprises a charging circuit, a first switch circuit and a second switch circuit, wherein the charging circuit comprises a first switch circuit and a second switch circuit;
a first end of the charging circuit is electrically connected with the first node, and a second end of the charging circuit is electrically connected with the second node;
the first switch circuit comprises a first end, a second end and a control end, the first end of the first switch circuit is electrically connected with the first node, the second end of the first switch circuit is electrically connected with the second node, the control end of the first switch circuit is electrically connected with a third node, and the first end of the first switch circuit and the second end of the first switch circuit can be disconnected or conducted along the direction from the second node to the first node under the control of a control signal of the control end of the first switch circuit;
the second switch circuit comprises a first end, a second end and a control end, the first end of the second switch circuit is electrically connected with a third node, the second end of the second switch circuit is connected with a ground wire, the control end of the second switch circuit is electrically connected with a control signal end, the control end of the second switch circuit is electrically connected with a control signal source, and the first end of the second switch circuit and the second end of the second switch circuit can be switched on or off under the control of a control signal of the control end of the second switch circuit;
the first node is electrically connected with the electric signal input end, and the second node is electrically connected with the charging control end.
Optionally, the charging circuit includes a first resistor and a second resistor arranged in parallel.
Optionally, the first switch circuit includes a PMOS transistor, a control sub-circuit is further included between the first node and the third node, the control sub-circuit includes a diode and a third resistor which are arranged in parallel, an anode of the diode is electrically connected to the third node, and a cathode of the diode is electrically connected to the first node.
Optionally, the second switch circuit includes a triode, the triode has a first end, a second end and a control end, and the first end of the triode is electrically connected to the third node.
Optionally, a fourth resistor is further disposed between the first end of the triode and the third node.
Optionally, the second end of the triode is connected to a ground wire, and the control end of the triode is electrically connected to the control signal end.
Optionally, a fifth resistor is further disposed between the control end of the triode and the control signal end.
Optionally, the power supply further comprises a sixth resistor, wherein one end of the sixth resistor is connected to a ground wire, and the other end of the sixth resistor is electrically connected to the control end of the triode.
According to the embodiment of the invention, the charging circuit, the first switch circuit and the second switch circuit are arranged, when the charging circuit is used, the element to be charged is charged by the charging circuit, and then the second switch circuit controls the first switch circuit to be switched on and off after the charging is finished, so that the overlarge impact circuit in the first switch circuit is avoided, the charging process can be effectively controlled, and the possibility of damaging the element in the first switch circuit can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention 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 that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a circuit diagram of a charge control circuit according to an embodiment of the present invention.
Detailed Description
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 some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a charging control circuit, as shown in fig. 1, and in one embodiment, the charging control circuit includes a charging circuit, a first switch circuit, and a second switch circuit.
A first terminal of the charging circuit is electrically connected to the first node N1, and a second terminal of the charging circuit is electrically connected to the second node N2.
The first switch circuit comprises a first terminal, a second terminal and a control terminal, the first terminal of the first switch circuit is electrically connected with the first node N1, the second terminal of the first switch circuit is electrically connected with the second node N2, the control terminal of the first switch circuit is electrically connected with the third node N3, and the first terminal of the first switch circuit and the second terminal of the first switch circuit can be disconnected or conducted along the direction from the second node N2 to the first node N1 under the control of a control signal of the control terminal of the first switch circuit.
The second switch circuit comprises a first end, a second end and a control end, the first end of the second switch circuit is electrically connected with the third node N3, the second end of the second switch circuit is connected with the ground wire, the control end of the second switch circuit is electrically connected with the control signal end, the control end of the second switch circuit is electrically connected with the control signal source, and the first end of the second switch circuit and the second end of the second switch circuit can be switched on or off under the control of the control signal of the control end of the second switch circuit.
The first node N1 is electrically connected to the electrical signal input terminal, and the second node N2 is electrically connected to the charging control terminal.
According to the embodiment of the invention, the charging circuit, the first switch circuit and the second switch circuit are arranged, when the charging circuit is used, the element to be charged is charged by the charging circuit, and then the second switch circuit controls the first switch circuit to be switched on and off after the charging is finished, so that the overlarge impact circuit in the first switch circuit is avoided, the charging process can be effectively controlled, and the possibility of damaging the element in the first switch circuit can be reduced.
Optionally, the charging circuit includes a first resistor R1 and a second resistor R2 arranged in parallel.
Optionally, the first switch circuit includes a PMOS transistor Q2, a control sub-circuit is further included between the first node N1 and the third node N3, the control sub-circuit includes a diode D1 and a third resistor R3, which are arranged in parallel, an anode of the diode D1 is electrically connected to the third node N3, and a cathode of the diode D1 is electrically connected to the first node N1.
The control sub-circuit is used for adjusting the connection state between the first node N1 and the second node N2, that is, applying a control signal between the first terminal and the control terminal of the PMOS transistor Q2, thereby controlling the conduction and the cut-off between the first terminal and the second terminal of the PMOS transistor Q2.
Optionally, the second switching circuit includes a transistor Q1, the transistor Q1 has a first terminal, a second terminal, and a control terminal, and the first terminal of the transistor Q1 is electrically connected to the third node N3.
Optionally, a fourth resistor R4 is further disposed between the first terminal of the transistor Q1 and the third node N3.
Optionally, a second end of the transistor Q1 is connected to a ground line, and a control end of the transistor Q1 is electrically connected to the control signal end.
Optionally, a fifth resistor R5 is further disposed between the control end and the control signal end of the transistor Q1.
Optionally, the transistor further includes a sixth resistor R6, where one end of the sixth resistor R6 is connected to the ground, and the other end is electrically connected to the control terminal of the transistor Q1.
In the present embodiment, the usage process of the charging control circuit can be summarized as that, in use, the first node N1 is electrically connected to the electrical signal input terminal, that is, to the input power source, and the second node N2 is electrically connected to the charging control terminal, so as to illustrate the charging of the point-capacitance, and the second node N2 is electrically connected to the point-capacitance, the power module, and the like. The control terminal of the second switch circuit is electrically connected to a control signal source, and the control signal may be provided by a processor (CPU) or the like, for example.
In the charging process, firstly, the PMOS transistor Q2 is in a cut-off state, the electrolytic capacitor is charged through the charging circuit, and after the charging is completed, the processor controls the signal of the control terminal of the transistor Q1 to conduct the first terminal and the second terminal of the transistor Q1, so as to generate a control signal between the first node N1 and the third node N3, that is, the control signal of the first terminal and the control terminal of the PMOS transistor Q2, and thus, the control of the conduction state and the cut-off state of the PMOS transistor Q2 can be realized through the control signal provided by the processor.
Like this, through setting up charging circuit, the rush current when can showing reduction electrolytic capacitor charges reduces the risk of electronic components damage, simultaneously, controls switching on of PMOS pipe Q2 through the treater, can let electronic components strictly carry out work according to the condition of setting for, and then has improved the stability and the reliability of controller.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A charging control circuit is characterized by comprising a charging circuit, a first switch circuit and a second switch circuit;
a first end of the charging circuit is electrically connected with the first node, and a second end of the charging circuit is electrically connected with the second node;
the first switch circuit comprises a first end, a second end and a control end, the first end of the first switch circuit is electrically connected with the first node, the second end of the first switch circuit is electrically connected with the second node, the control end of the first switch circuit is electrically connected with a third node, and the first end of the first switch circuit and the second end of the first switch circuit can be disconnected or conducted along the direction from the second node to the first node under the control of a control signal of the control end of the first switch circuit;
the second switch circuit comprises a first end, a second end and a control end, the first end of the second switch circuit is electrically connected with a third node, the second end of the second switch circuit is connected with a ground wire, the control end of the second switch circuit is electrically connected with a control signal end, the control end of the second switch circuit is electrically connected with a control signal source, and the first end of the second switch circuit and the second end of the second switch circuit can be switched on or off under the control of a control signal of the control end of the second switch circuit;
the first node is electrically connected with the electric signal input end, and the second node is electrically connected with the charging control end.
2. The charge control circuit of claim 1, wherein the charging circuit comprises a first resistor and a second resistor arranged in parallel.
3. The charge control circuit of claim 1, wherein the first switch circuit comprises a PMOS transistor, and further comprising a control sub-circuit between the first node and the third node, the control sub-circuit comprising a diode and a third resistor arranged in parallel, wherein an anode of the diode is electrically connected to the third node, and a cathode of the diode is electrically connected to the first node.
4. The charge control circuit of claim 1, wherein the second switching circuit comprises a transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the transistor being electrically connected to the third node.
5. The charge control circuit of claim 4, wherein a fourth resistor is further disposed between the first terminal of the transistor and the third node.
6. The charge control circuit of claim 4, wherein the second terminal of the transistor is connected to ground, and the control terminal of the transistor is electrically connected to the control signal terminal.
7. The charge control circuit of claim 6, wherein a fifth resistor is further disposed between the control terminal of the transistor and the control signal terminal.
8. The charge control circuit according to claim 6, further comprising a sixth resistor, wherein one end of the sixth resistor is connected to a ground line, and the other end of the sixth resistor is electrically connected to the control terminal of the triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483083.XA CN111525667A (en) | 2020-06-01 | 2020-06-01 | Charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483083.XA CN111525667A (en) | 2020-06-01 | 2020-06-01 | Charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111525667A true CN111525667A (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010483083.XA Pending CN111525667A (en) | 2020-06-01 | 2020-06-01 | Charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111525667A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000023357A (en) * | 1998-06-29 | 2000-01-21 | Sony Corp | Rush current limiter for power circuit |
| CN202455116U (en) * | 2012-02-15 | 2012-09-26 | 杭州万好万家动力电池有限公司 | Novel discharge control circuit |
| CN105208703A (en) * | 2014-05-30 | 2015-12-30 | 英飞特电子（杭州）股份有限公司 | Device for inhibiting impact current |
| CN206922644U (en) * | 2017-07-19 | 2018-01-23 | 惠州市德合盛科技有限公司 | A kind of anti-firing circuit of Switching Power Supply and Switching Power Supply |
| CN108899955A (en) * | 2018-07-27 | 2018-11-27 | 上海联影医疗科技有限公司 | A kind of power-down control device and active medical equipment |
-
2020
- 2020-06-01 CN CN202010483083.XA patent/CN111525667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000023357A (en) * | 1998-06-29 | 2000-01-21 | Sony Corp | Rush current limiter for power circuit |
| CN202455116U (en) * | 2012-02-15 | 2012-09-26 | 杭州万好万家动力电池有限公司 | Novel discharge control circuit |
| CN105208703A (en) * | 2014-05-30 | 2015-12-30 | 英飞特电子（杭州）股份有限公司 | Device for inhibiting impact current |
| CN206922644U (en) * | 2017-07-19 | 2018-01-23 | 惠州市德合盛科技有限公司 | A kind of anti-firing circuit of Switching Power Supply and Switching Power Supply |
| CN108899955A (en) * | 2018-07-27 | 2018-11-27 | 上海联影医疗科技有限公司 | A kind of power-down control device and active medical equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200811 |