CN219643894U - Load switch circuit, device, chip and intelligent charger - Google Patents
Load switch circuit, device, chip and intelligent charger Download PDFInfo
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- CN219643894U CN219643894U CN202321362381.9U CN202321362381U CN219643894U CN 219643894 U CN219643894 U CN 219643894U CN 202321362381 U CN202321362381 U CN 202321362381U CN 219643894 U CN219643894 U CN 219643894U
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- 238000012546 transfer Methods 0.000 claims abstract description 8
- 230000005669 field effect Effects 0.000 claims description 22
- 238000005070 sampling Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a load switch circuit, a device, a chip and an intelligent charger, wherein a trigger component is conducted when inputting an external first control level and outputs a first control signal to a first switch component and a second switch component when conducting, so that the first switch component and the second switch component are conducted when inputting the first control signal, the first switch component is conducted to transfer an external input voltage to the second switch component, the second switch component is conducted to transfer the input voltage to a load and a voltage division component, the voltage division component determines the working voltage of the input voltage acting on the load, and because the voltage division component and the load are in series voltage division relation, the first switch component and the second switch component simplify the circuit through multiplexing the trigger component, and the hardware cost of the load switch circuit is reduced while the supply of the working voltage of a multi-switch control load is ensured.
Description
Technical Field
The utility model belongs to the technical field of switching circuits, and particularly relates to a load switching circuit, a device, a chip and an intelligent charger.
Background
The current market load switch circuit for battery charging generally needs a plurality of control switch modules of a main circuit to ensure the power failure in a non-charging state, and the control switch modules also need to be controlled respectively through a plurality of control modules, thus leading to complex overall circuit design.
Disclosure of Invention
In view of the above, the embodiment of the utility model provides a load switch circuit, which aims to solve the problem of complex design of the traditional load switch circuit.
A first aspect of an embodiment of the present utility model provides a load switching circuit, configured to be electrically connected to the load, and including a first switching component, a second switching component, a triggering component, and a voltage dividing component;
the trigger component is configured to be conducted when a first control level is input and output a first control signal;
the first switch assembly is respectively and electrically connected with the trigger assembly and the second switch assembly, and is configured to be conducted and transfer an input voltage to the second switch assembly when the first control signal is input;
the second switch assembly is electrically connected with the trigger assembly and is configured to be conducted when the first control signal is input and output the input voltage to the load;
the voltage dividing assembly is electrically connected with the load and is configured to adjust the working voltage of the input voltage applied to the load.
In one embodiment, the first switch assembly includes a first field effect transistor; the drain electrode of the first field effect transistor is used for being connected with the input voltage, the grid electrode and the source electrode of the first field effect transistor are used for inputting the first control signal, and the source electrode of the first field effect transistor is used for outputting the input voltage.
In one embodiment, the second switch assembly includes a second field effect transistor; the grid electrode and the source electrode of the second field effect tube are used for inputting the first control signal, the source electrode of the second field effect tube is used for being connected with the input voltage, and the drain electrode of the second field effect tube is used for outputting the input voltage.
In one embodiment, the trigger assembly includes a first resistor and a triode; the first end of the first resistor is connected in series between the first switch assembly and the second switch assembly, the second end of the first resistor is electrically connected with the collector electrode of the triode and used for outputting the first control signal, the emitter electrode of the triode is electrically connected with a power supply, and the base electrode of the triode is used for inputting the first control level.
In one embodiment, the voltage dividing component comprises a sampling resistor, a second resistor and a third resistor; the first end of the sampling resistor is electrically connected with a power supply, the second end of the sampling resistor is electrically connected with the negative electrode of the load and the first end of the third resistor, the second end of the third resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is electrically connected with the positive electrode of the load.
In a second aspect, there is provided a load switching device comprising a load switching circuit as claimed in any one of the first aspects.
In a third aspect, there is provided a load switch chip comprising a load switch circuit as claimed in any one of the first aspects.
In a fourth aspect, an intelligent charger is provided, including a load switch circuit and a single-chip microcomputer as described in any one of the first aspects; the single chip microcomputer is electrically connected with the load switch and used for outputting the first control signal.
The load switch circuit is at least conducted when the trigger component inputs an external first control level and outputs a first control signal to the first switch component and the second switch component when the trigger component is conducted, so that the first switch component and the second switch component are conducted when the first control signal is input, the external input voltage is transferred to the second switch component when the first switch component is conducted, the second switch component transfers the input voltage to the load and the voltage dividing component when the first switch component is conducted, the voltage dividing component determines the working voltage of the load when the input voltage acts on the load, and because the voltage dividing component and the load are in series connection and voltage division, the first switch component and the second switch component simplify the circuit through multiplexing the trigger component, and the hardware cost of the load switch circuit is reduced while the supply of the working voltage of the load is guaranteed to be controlled by multiple switches.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a load switch circuit according to an embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of a load switch circuit according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, a schematic flow chart of a load switch circuit provided in an embodiment of the present utility model, for convenience of explanation, only the portions related to the embodiment are shown, and detailed below:
a first aspect of an embodiment of the present utility model provides a load switching circuit for electrically connecting with the load 4, which is characterized by comprising a first switching component 2, a second switching component 3, a triggering component 1 and a voltage dividing component 5;
the trigger component 1 is configured to be conducted when a first control level is input and output a first control signal;
the first switch assembly 2 is electrically connected with the trigger assembly 1 and the second switch assembly 3 respectively, and is configured to be turned on and transfer an input voltage to the second switch assembly 3 when the first control signal is input;
the second switch assembly 3 is electrically connected with the trigger assembly 1, and is configured to be turned on when the first control signal is input and output the input voltage to the load 4;
the voltage dividing component 5 is electrically connected with the load 4 and is configured to adjust an operating voltage of the load 4 by the input voltage.
In this embodiment, the trigger component 1 is turned on when inputting the external first control level and outputs the first control signal to the first switch component 2 and the second switch component 3 when turned on, so that the first switch component 2 and the second switch component 3 are turned on when inputting the first control signal, the first switch component 2 transfers the external input voltage to the second switch component 3 when turned on, the second switch component 3 transfers the input voltage to the load 4 and the voltage dividing component 5 when turned on, the voltage dividing component 5 determines the working voltage of the input voltage acting on the load 4, and because the voltage dividing component 5 and the load 4 are in series voltage dividing relation, the first switch component 2 and the second switch component 3 simplify the circuit by multiplexing the trigger component 1, and reduce the hardware cost of the load switch circuit while ensuring the supply of the working voltage of the multi-switch control load 4.
The load 4 may be a rechargeable battery. The first control level may be a high level in the PWM signal output by the single chip microcomputer.
Referring to fig. 2, in one embodiment, the first switch assembly 2 includes a first fet Q1; the drain electrode of the first field effect transistor Q1 is used for accessing the input voltage, the gate electrode and the source electrode of the first field effect transistor Q1 are used for inputting the first control signal, and the source electrode of the first field effect transistor Q1 is used for outputting the input voltage.
In one embodiment, the second switch assembly 3 includes a second fet Q2; the grid electrode and the source electrode of the second field effect tube Q2 are used for inputting the first control signal, the source electrode of the second field effect tube Q2 is used for being connected with the input voltage, and the drain electrode of the second field effect tube Q2 is used for outputting the input voltage.
In one embodiment, the trigger component 1 includes a first resistor R1 and a transistor Q3; the first end of the first resistor R1 is connected in series between the first switch assembly 2 and the second switch assembly 3, the second end of the first resistor R1 is electrically connected with the collector of the triode Q3 and is used for outputting the first control signal, the emitter of the triode Q3 is electrically connected with a power supply, and the base of the triode Q3 is used for inputting the first control level.
Transistor Q3 may also be an NMOS transistor.
In one embodiment, the voltage dividing component 5 includes a sampling resistor RS1, a second resistor R2, and a third resistor R3; the first end of the sampling resistor RS1 is electrically connected with a power supply, the second end of the sampling resistor RS1 is electrically connected with the negative electrode of the load and the first end of the third resistor R3, the second end of the third resistor R3 is electrically connected with the first end of the second resistor R2 and used for outputting detection current, and the second end of the second resistor R2 is electrically connected with the positive electrode of the load.
In a third aspect, there is provided a load switch chip comprising a load switch circuit as claimed in any one of the first aspects.
In a fourth aspect, an intelligent charger is provided, including a load switch circuit and a single-chip microcomputer as described in any one of the first aspects; the single chip microcomputer is electrically connected with the load switch and used for outputting the first control signal.
The embodiment of the utility model also provides a load switching device, which comprises the load switching circuit according to any embodiment, and the load switching device of the embodiment at least comprises the beneficial effects corresponding to the load switching circuit according to any embodiment because the load switching device of the embodiment comprises the load switching circuit according to any embodiment.
The embodiment of the utility model also provides a load switch chip, which comprises the load switch circuit according to any embodiment, and the load switch chip of the embodiment at least comprises the load switch circuit according to any embodiment. The load switch chip can be manufactured into different packages according to different current limits, for example, the first switch component 2 and the second switch component 3 with the current less than 4A can be manufactured into SOT23-5 packages, and the first switch component 2 and the second switch component 3 with the current less than 12A can be manufactured into SO8 packages. The packaged sampling resistor RS1 of SO8 can be manufactured into an externally-hung form, SO that the resistance value of the sampling resistor RS1 can be conveniently adjusted.
The embodiment of the utility model also provides an intelligent charger, which comprises the load switch circuit and the singlechip according to any one of the first aspect; the single chip microcomputer is electrically connected with the load switch, and the single chip microcomputer is used for outputting the first control signal, and the intelligent charger of the embodiment at least comprises the beneficial effects corresponding to the load switch circuit of any embodiment because the intelligent charger of the embodiment comprises the load switch circuit of any embodiment.
It should be noted that, because the content of information interaction and execution process between the above devices/units is based on the same concept as the method embodiment of the present utility model, specific functions and technical effects thereof may be referred to in the method embodiment section, and will not be described herein.
It will be apparent to those skilled in the art that, for convenience and brevity, only the above-described division of the functional elements and circuits is illustrated, and that, in practical applications, the above-described functional allocations may be implemented by different functional elements and circuits, i.e., the internal structures of the circuits are divided into different functional elements or circuits to implement all or part of the above-described functions. The functional elements and circuits in the embodiments may be integrated in one processing element, or each element may exist alone physically, or two or more elements may be integrated in one element, where the integrated elements may be implemented in hardware or software functional elements. In addition, specific names of the functional elements and circuits are only for distinguishing from each other, and are not intended to limit the scope of the present utility model. The specific working process of the elements and circuits in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present utility model.
In the embodiments provided in the present utility model, it should be understood that the disclosed circuits/terminal devices and methods may be implemented in other manners. For example, the circuit/terminal device embodiments described above are merely illustrative, e.g., the division of the circuits or elements is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple elements or circuits may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, circuits or elements, which may be electrical, mechanical or otherwise.
The elements described as separate components may or may not be physically separate, and components shown as elements may or may not be physical elements, i.e., may be located in one place, or may be distributed over multiple network elements. Some or all of the elements may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (9)
1. A load switching circuit for electrical connection with the load, comprising a first switching assembly, a second switching assembly, a triggering assembly, and a voltage dividing assembly;
the trigger component is configured to be conducted when a first control level is input and output a first control signal;
the first switch assembly is respectively and electrically connected with the trigger assembly and the second switch assembly, and is configured to be conducted and transfer an input voltage to the second switch assembly when the first control signal is input;
the second switch assembly is electrically connected with the trigger assembly and is configured to be conducted when the first control signal is input and output the input voltage to the load and the voltage division assembly;
the voltage dividing assembly is electrically connected with the load and is configured to adjust the working voltage of the input voltage applied to the load.
2. The load switching circuit of claim 1, wherein the voltage divider assembly is further configured to detect a charging current.
3. The load switching circuit of claim 1, wherein the first switching component comprises a first field effect transistor; the drain electrode of the first field effect transistor is used for being connected with the input voltage, the grid electrode and the source electrode of the first field effect transistor are used for inputting the first control signal, and the source electrode of the first field effect transistor is used for outputting the input voltage.
4. The load switching circuit of claim 1 wherein the second switching assembly comprises a second field effect transistor; the grid electrode and the source electrode of the second field effect tube are used for inputting the first control signal, the source electrode of the second field effect tube is used for being connected with the input voltage, and the drain electrode of the second field effect tube is used for outputting the input voltage.
5. The load switching circuit of claim 1, wherein the trigger assembly comprises a first resistor and a triode; the first end of the first resistor is connected in series between the first switch assembly and the second switch assembly, the second end of the first resistor is electrically connected with the collector electrode of the triode and used for outputting the first control signal, the emitter electrode of the triode is electrically connected with a power supply, and the base electrode of the triode is used for inputting the first control level.
6. The load switching circuit of claim 2, wherein the voltage divider assembly comprises a sampling resistor, a second resistor, and a third resistor; the first end of the sampling resistor is electrically connected with a power supply, the second end of the sampling resistor is electrically connected with the negative electrode of the load and the first end of the third resistor, the second end of the third resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is electrically connected with the positive electrode of the load.
7. Load switching device, characterized by comprising a load switching circuit according to any of claims 1-5.
8. A load switch chip comprising a load switch circuit according to any one of claims 1-5.
9. An intelligent charger, characterized by comprising the load switch circuit and the single-chip microcomputer according to any one of claims 1-5; the single chip microcomputer is electrically connected with the load switch and used for outputting the first control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321362381.9U CN219643894U (en) | 2023-05-30 | 2023-05-30 | Load switch circuit, device, chip and intelligent charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321362381.9U CN219643894U (en) | 2023-05-30 | 2023-05-30 | Load switch circuit, device, chip and intelligent charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643894U true CN219643894U (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321362381.9U Active CN219643894U (en) | 2023-05-30 | 2023-05-30 | Load switch circuit, device, chip and intelligent charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643894U (en) |
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2023
- 2023-05-30 CN CN202321362381.9U patent/CN219643894U/en active Active
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