CN220286018U - Charger fan detection circuit - Google Patents
Charger fan detection circuit Download PDFInfo
- Publication number
- CN220286018U CN220286018U CN202321691532.5U CN202321691532U CN220286018U CN 220286018 U CN220286018 U CN 220286018U CN 202321691532 U CN202321691532 U CN 202321691532U CN 220286018 U CN220286018 U CN 220286018U
- Authority
- CN
- China
- Prior art keywords
- detection
- resistor
- fan
- triode
- collector
- 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.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 8
- 230000010349 pulsation Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a charger fan detection circuit, which comprises an existing fan working circuit and a detection circuit, wherein the detection circuit is connected with the existing fan working circuit; the existing fan working circuit consists of a power supply, a current limiting resistor and a fan; the detection circuit consists of a detection triode, a base resistor, a detection resistor, a collector resistor and a voltage stabilizing tube. The beneficial effects of the utility model are as follows: the base of the detection triode is connected with the fan through the base resistor, the collector of the detection triode is connected with the negative end of the power supply through the collector resistor, one end of the detection resistor is connected with the collector of the detection triode, the other end of the detection resistor is connected with the detection signal end, the electronic reversing current can generate pulsation, the base of the detection triode can generate pulsation through the base resistor, the emitter and the collector of the detection triode can flow through the pulsating current in real time, and the detection resistor can generate pulsation signals on the detection signal end, so that whether the fan works normally can be detected in real time.
Description
Technical Field
The utility model relates to a detection circuit, in particular to a charger fan detection circuit, and belongs to the technical field of charging equipment.
Background
The heat dissipation of the fan is needed for the charger because the charger has longer working time when the charger transmits current to the battery, larger heat can be generated, the heat can suddenly rise, if the heat dissipation of the fan is not available, the damage to the parts of the charger is easily caused, therefore, most of the chargers are provided with the fan for heat dissipation, the fan is arranged for the charger, the temperature of the charger in working can be reduced, the damage of the charger is avoided, and once the cooling fan is in fault such as open circuit, short circuit, blocking and the like, the charger is possibly damaged, so that the fault detection function is needed to be set for the charger fan.
For the existing charger fan fault detection mode, a novel charger fan detection circuit disclosed in publication number CN205297996U is provided with a main control chip U2, a fan U1, a first triode Q1, a first resistor R3, a second resistor R5, a third resistor R6, a fourth resistor R7, a first capacitor C2, a fan driving module and a fan control module; the problem of the fault detection of fan has been solved, whether can not have the damage by very accurate detection fan, can also lead to the fan not pivoted trouble information to detect to this information is sent to the control unit, although it can realize accurate fault detection, the circuit that involves is comparatively complicated, and adopted accurate electrical components such as control chip and control module, and the charger of electric motor car often can fall subaerial, consequently can lead to the damage of inside accurate part easily, and then can't realize the detection, secondly, because the charger is in electric bicycle's accessory, if be provided with more accurate components and parts, can greatly increase manufacturing cost, and then lead to the selling price also higher, can influence sales volume.
Disclosure of Invention
The present utility model is directed to a charger fan detection circuit for solving at least one of the above problems.
The utility model realizes the above purpose through the following technical scheme: a charger fan detection circuit comprises an existing fan working circuit and a detection circuit, wherein the detection circuit is connected with the existing fan working circuit;
the existing fan working circuit consists of a power supply, a current limiting resistor and a fan, wherein the power supply, the current limiting resistor and the fan are connected in series;
the detection circuit consists of a detection triode, a base resistor, a detection resistor, a collector resistor and a voltage stabilizing tube.
As still further aspects of the utility model: the emitter of the detection triode is connected with the positive end of the power supply.
As still further aspects of the utility model: the base electrode of the detection triode is connected with the fan through a base electrode resistor.
As still further aspects of the utility model: the collector of the detection triode is connected with the negative end of the power supply through a collector resistor.
As still further aspects of the utility model: one end of the detection resistor is connected with the collector electrode of the detection triode, and the other end of the detection resistor is connected with the detection signal end.
As still further aspects of the utility model: the voltage stabilizing tube is connected between the detection signal end and the negative electrode of the power supply.
The beneficial effects of the utility model are as follows: the base of the detection triode is connected with the fan through the base resistor, the collector of the detection triode is connected with the negative end of the power supply through the collector resistor, one end of the detection resistor is connected with the collector of the detection triode, the other end of the detection resistor is connected with the detection signal end electronic reversing current to generate pulsation, the base of the detection triode is enabled to generate pulsation through the base resistor, so that pulsating current can flow between the emitter and the collector of the detection triode in real time, and a pulsation signal can be generated on the detection signal end through the detection resistor, so that whether the fan works normally can be detected in real time.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: v1, a power supply, M1, a fan, R1, a current limiting resistor, R2, a base resistor, R3, a detection resistor, R4, a collector resistor, Q1, a detection triode, D1, a voltage stabilizing tube, X1 and a detection signal end.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
As shown in fig. 1, a charger fan detection circuit comprises an existing fan working circuit and a detection circuit, wherein the detection circuit is connected with the existing fan working circuit;
the existing fan working circuit consists of a power supply V1, a current-limiting resistor R1 and a fan M1, wherein the power supply V1, the current-limiting resistor R1 and the fan M1 are connected in series;
the detection circuit consists of a detection triode Q1, a base resistor R2, a detection resistor R3, a collector resistor R4 and a voltage stabilizing tube D1.
Examples
In addition to all the technical features in the first embodiment, the present embodiment further includes:
the emitter of the detection triode Q1 is connected with the positive electrode end of the power supply V1; the base electrode of the detection triode Q1 is connected with the fan M1 through a base electrode resistor R2; the collector of the detection triode Q1 is connected with the negative end of the power supply V1 through the collector resistor R4, when the cooling fan works, the electronic reversing current can generate pulsation, and the base of the detection triode Q1 can generate pulsation along with the electronic reversing current through the base resistor R2, so that the pulsating current can flow between the emitter and the collector of the detection triode Q1 in real time, and whether the fan works normally can be detected in real time.
Examples
In addition to all the technical features in the first embodiment, the present embodiment further includes:
one end of the detection resistor R3 is connected with the collector electrode of the detection triode Q1, the other end of the detection resistor R3 is connected with the detection signal end X1, and a pulse signal is generated on the detection signal end X1 through the detection resistor R3.
The voltage stabilizing tube D1 is connected between the detection signal end X1 and the negative electrode of the power supply V1 and is used for limiting the upper limit of the pulse signal on the detection signal end X1.
Working principle: when the cooling fan works, because the electronic reversing current can generate pulsation, the base electrode of the detection triode Q1 can generate pulsation along with the electronic reversing current through the base electrode resistor R2, so that the pulsating current can flow between the emitter electrode and the collector electrode of the detection triode Q1 in real time, and a pulsating signal can be generated on the detection signal end X1 through the detection resistor R3, and whether the fan works normally can be detected in real time.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a charger fan detection circuitry, includes current fan operating circuit and detection circuitry, its characterized in that: the detection circuit is connected with the existing fan working circuit;
the existing fan working circuit consists of a power supply (V1), a current-limiting resistor (R1) and a fan (M1), wherein the power supply (V1), the current-limiting resistor (R1) and the fan (M1) are connected in series;
the detection circuit is composed of a detection triode (Q1), a base resistor (R2), a detection resistor (R3), a collector resistor (R4) and a voltage stabilizing tube (D1).
2. The charger fan detection circuit of claim 1, wherein: the emitter of the detection triode (Q1) is connected with the positive electrode end of the power supply (V1).
3. The charger fan detection circuit of claim 2, wherein: the base electrode of the detection triode (Q1) is connected with the fan (M1) through a base electrode resistor (R2).
4. The charger fan detection circuit of claim 2, wherein: the collector of the detection triode (Q1) is connected with the negative end of the power supply (V1) through a collector resistor (R4).
5. The charger fan detection circuit of claim 1, wherein: one end of the detection resistor (R3) is connected with the collector electrode of the detection triode (Q1), and the other end of the detection resistor (R3) is connected with the detection signal end (X1).
6. The charger fan detection circuit of claim 1, wherein: the voltage stabilizing tube (D1) is connected between the detection signal end (X1) and the negative electrode of the power supply (V1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321691532.5U CN220286018U (en) | 2023-06-30 | 2023-06-30 | Charger fan detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321691532.5U CN220286018U (en) | 2023-06-30 | 2023-06-30 | Charger fan detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220286018U true CN220286018U (en) | 2024-01-02 |
Family
ID=89342165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321691532.5U Active CN220286018U (en) | 2023-06-30 | 2023-06-30 | Charger fan detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220286018U (en) |
-
2023
- 2023-06-30 CN CN202321691532.5U patent/CN220286018U/en active Active
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