CN209786846U - Charging device and multi-path charging panel - Google Patents
Charging device and multi-path charging panel Download PDFInfo
- Publication number
- CN209786846U CN209786846U CN201920880949.3U CN201920880949U CN209786846U CN 209786846 U CN209786846 U CN 209786846U CN 201920880949 U CN201920880949 U CN 201920880949U CN 209786846 U CN209786846 U CN 209786846U
- Authority
- CN
- China
- Prior art keywords
- charging
- electrically connected
- capacitor
- pin
- chip
- 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.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a charging device and multichannel charging panel, wherein, charging device includes more than one charging module group, and every charging module group includes: the charging chip is electrically connected with the input power line; the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs. The multi-path charging panel comprises the charging device, can charge batteries with various specifications at the same time, and is flexible, quick and convenient to charge.
Description
Technical Field
the utility model relates to a charging panel especially relates to a charging device and multichannel charging panel.
Background
Market sharing bicycle or other trades need a large amount of demands to use battery or lithium cell power supply, so need quick convenient charge to battery and lithium cell, need have the charging device of multichannel plug urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a charging device and multichannel charging panel for solve the problem that can not be quick among the prior art, convenient carry out the charging to the battery of multiple plug specification.
in order to achieve the above and other related objects, the present invention provides a charging device, including more than one charging module group, each charging module group includes: the charging chip is electrically connected with the input power line; the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs.
in an embodiment of the present invention, the charging connector includes at least two of a 2PIN charging connector, a 3PIN charging connector and a 4PIN charging connector.
In an embodiment of the present invention, the charging device includes a filtering module formed by connecting a plurality of capacitors in parallel.
In an embodiment of the present invention, the filtering module includes a plurality of resistors connected in series and/or in parallel.
in an embodiment of the present invention, the charging device includes a charging lamp, and the charging lamp is electrically connected to the charging chip.
in an embodiment of the present invention, in each charging module group, the charging connection ports of two or more different PIN PINs are connected to the charging chip through the same line.
In an embodiment of the present invention, in each charging module group, the charging connection ports of two or more different PIN PINs are grounded through the same line.
In an embodiment of the present invention, the first pin of the charging chip is electrically connected to the first input terminal of the input power line, the second terminal of the input power line is electrically connected to ground, and both ends of the element D104 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, respectively, the element D104 is a zener diode, both ends of the resistor R104 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, both ends of the capacitor C107 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, respectively, the first end of the resistor R105 is electrically connected to the first end of the capacitor C108, the second end of the resistor R105 is electrically connected to the first input terminal of the input power line, and the second end of the capacitor C108 is electrically connected to the second input terminal of the input power line, the first input end of the input power line is grounded through a capacitor C1, a capacitor C127, a capacitor C129, a capacitor C130, a capacitor C103, a capacitor C104, a capacitor C105 and a capacitor C106, respectively, the first PIN of the charging chip is further grounded through a capacitor C27, a capacitor C28 and a resistor R24 and a resistor R25 which are connected in series, respectively, the second PIN of the charging chip is grounded through a capacitor C29, the third PIN of the charging chip is electrically connected with the first end of a resistor R410, the second end of the resistor R410 is electrically connected with the first PIN of a 3PIN charging connector, the second PIN of the 3PIN charging connector is electrically connected with the fourth PIN of the charging chip, the second PIN of the 3PIN charging connector is further electrically connected with the cathode of a diode TVS109, the cathode of the diode TVS108, the cathode of the voltage regulator D103 and the first end of the capacitor C113, the anode of the diode TVS109, the anode of the diode TVS108, the anode of the diode D103 and the second end of the capacitor C113 are grounded, the cathode of the diode TVS109 is further connected to the test point TP106, the cathode of the diode TVS108 is further connected to the test point TP105, the second PIN of the 3PIN charging connector is electrically connected to the first PIN of the 4PIN charging connector, the first PIN of the 2PIN charging connector is electrically connected to the first PIN of the charging chip, the second PIN of the 4PIN charging connector and the second PIN of the 2PIN charging connector are grounded together with the third PIN of the 3PIN charging connector, the fifth PIN of the charging chip is electrically connected to the cathode of the light emitting diode D9, the sixth PIN of the charging chip is electrically connected to the cathode of the light emitting diode D10, the light emitting diode D9 and the light emitting diode D10 are electrically connected to the first end of the resistor R23, the second end of the resistor R23 is connected to the third PIN of the charging chip and the first end of the resistor R26, the second end of the resistor R26 is grounded, the seventh pin of the charging chip is electrically connected with the first end of the inductor L3, the second end of the inductor L3 is respectively connected with the first end of the capacitor C32, the first end of the capacitor C35 and the first end of the capacitor C36, and the second end of the capacitor C32, the second end of the capacitor C35 and the second end of the capacitor C36 are all grounded.
In order to achieve the above and other related objects, the present invention further provides a charging device, which includes a charging chip electrically connected to an input power line; and more than one charging module group, wherein, at least one charging module group includes: the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs.
To achieve the above objects and other related objects, the present invention also provides a multi-path charging panel, including: a substrate and a charging device as described in any of the above.
As described above, the utility model provides a charging device and multichannel charging panel, wherein, charging device includes more than one charging module group, and every charging module group includes: the charging chip is electrically connected with the input power line; the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs. The multi-path charging panel comprises the charging device, can charge batteries with various specifications at the same time, and is flexible, quick and convenient to charge.
Drawings
Fig. 1 is a schematic diagram of a charging device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a part of a circuit of a charging device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a part of a circuit of a charging device according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a part of a circuit of a charging device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a part of a circuit of a charging device according to an embodiment of the present invention.
Description of the element reference numerals
1 charging device
11 charging chip
12 charging connector
13 aluminium electrolysis
14 charging lamp
15 power inductor
Detailed Description
the following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
The utility model provides a charging device, including the more than one module group that charges, every module group that charges includes: charging chip, charging connector, aluminium electroloysis and power inductance.
The charging chip is electrically connected with an input power line; the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the charging lamp is electrically connected with the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs. In a specific embodiment, the charging device further comprises a charging light for indicating a charging status of the charging device. The present invention will be described below with reference to specific examples.
Please refer to fig. 1, which is a schematic diagram illustrating a charging device according to an embodiment of the present invention. The charging device 1 in fig. 1 includes a charging module group, and the charging device 1 includes a charging chip 11, a charging connector 12, an aluminum electrolysis 13, a charging lamp 14, and a power inductor 15.
The charging chip 11 is electrically connected with an input power line; wherein the maximum input current borne by the input power line is 40A.
The charging connector 12 is electrically connected with the charging chip 11; the charging connector 12 may be a plug-in vertical type snap connector with high stability.
The aluminum electrolysis 13 is electrically connected between the input power line and the charging chip 11; in some embodiments, the aluminum electrolysis 13 is an input protection capacitor with withstand voltage of 470UF/10V, and has the function of voltage stabilization.
The charging lamp 14 is electrically connected with the charging chip 11; in some embodiments, the charge lights 14 include at least a white charge light, a red charge light, and a green charge light, which may indicate a three color light, a first; and (3) power on display: white light, second kind; displaying red light during charging, and the third type; the charging is completed and the green light is displayed. In other embodiments, when different PIN charging connectors are charged externally, the charging lamp 14 correspondingly displays different colors.
the power inductor 15 is electrically connected between the charging connector 12 and the charging chip 11. The operating current of the power inductor 15 is 2A at most.
The charging connector 12 includes at least two of a 2PIN charging connector, a 3PIN charging connector, and a 4PIN charging connector. In some embodiments, the 2PIN charging connector is a 2PIN 2.0MM pitch connector, the 3PIN charging connector is a 3PIN 2.0MM pitch connector, and the 4PIN charging connector is a 4PIN 2.54MM pitch connector.
In some embodiments, a test point is further included to electrically connect the charging connector 12 to an external test device. Whether charging is normal or not can be detected by the external detection device during charging. The external test device is, for example, a multimeter or a test fixture.
In one embodiment, the charging device 1 includes a filtering module formed by connecting a plurality of capacitors in parallel. And the number of the capacitors connected in parallel can be selected according to the filtering requirement. The filtering module may further include a plurality of resistors connected in series and/or in parallel for adjusting the charging current and/or the charging voltage of the charging device 1.
In some embodiments, in each charging module group, the charging connection ports of the two or more different PIN PINs are connected to the charging chip 11 through the same line.
In other embodiments, in each charging module group, the charging connection ports of the two or more different PIN PINs are grounded through the same line.
In some embodiments, the present invention further provides a charging device, which includes a charging chip electrically connected to the input power line; and more than one charging module group, that is, a plurality of charging module groups share one charging chip, wherein at least one charging module group includes: charging connectors, aluminum electrolysis, and power inductors. The charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs.
Fig. 2 to 5 are schematic diagrams showing a part of a circuit of the charging device according to an embodiment of the present invention, and fig. 2 to 5 are complete schematic diagrams of the charging device.
As shown IN fig. 2 to 5, a first pin (e.g., pin IN fig. 2) of the charging chip 11 is electrically connected to a first input terminal of the input power line, a second terminal of the input power line is electrically connected to ground, two terminals of a component D104 are electrically connected to the first input terminal of the input power line (e.g., TP101 IN fig. 2) and the second input terminal of the input power line (e.g., TP102 IN fig. 2), the component D104 is a zener diode connected IN reverse series, the component D104 can discharge static electricity, two terminals of a resistor R104 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, two terminals of a capacitor C107 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, a first terminal of a resistor R105 is electrically connected to a first terminal of a capacitor C108, and a second terminal of the resistor R105 is electrically connected to the first input terminal of the input power line, the second end of the capacitor C108 is electrically connected to the second input end of the input power line, and the first input end of the input power line is grounded through a capacitor C1, a capacitor C127, a capacitor C129, a capacitor C130, a capacitor C103, a capacitor C104, a capacitor C105, and a capacitor C106, respectively, in this embodiment, the capacitor C1, the capacitor C127, the capacitor C129, the capacitor C130, the capacitor C103, the capacitor C104, the capacitor C105, and the capacitor C106 constitute the filtering module.
The first PIN of the charging chip 11 is further configured to be grounded through a capacitor C27, a capacitor C28, and a resistor R24 and a resistor R25 connected in series, respectively, the second PIN (e.g., PIN VCC in fig. 2) of the charging chip 11 is grounded through a capacitor C29, the third PIN (e.g., PIN NTC in fig. 2) of the charging chip 11 is electrically connected to the first end of the resistor R410, the second end of the resistor R410 is electrically connected to the first PIN of a 3PIN charging connector (e.g., CON110 in fig. 4), the second PIN of the 3PIN charging connector is electrically connected to the fourth PIN (e.g., PIN BATT in fig. 2) of the charging chip 11, the second PIN of the 3PIN charging connector is further electrically connected to the cathode of the diode TVS109, the cathode of the diode TVS108, the cathode of the regulator D103, and the first end of the capacitor C113, the anode of the diode TVS109, the anode of the diode TVS108, the anode of the regulator D103, and the second end of the capacitor C113 are electrically connected to the ground, the cathode of the diode TVS109 is further connected to a test point TP106, the cathode of the diode TVS108 is further connected to a test point TP105, the second PIN of the 3PIN charging connector is electrically connected to the first PIN of the 4PIN charging connector (e.g., CON101 in fig. 4), the first PIN of the 2PIN charging connector (e.g., CON111 in fig. 5) is electrically connected to the first PIN of the charging chip, the second PIN of the 4PIN charging connector and the second PIN of the 2PIN charging connector are grounded together with the third PIN of the 3PIN charging connector, the fifth PIN of the charging chip 11 (e.g., PIN ACOK in fig. 2) is electrically connected to the cathode of a light emitting diode D9, the sixth PIN of the charging chip 11 (e.g., PIN CHGOK in fig. 2) is electrically connected to the cathode of a light emitting diode D10, the light emitting diode D9 and the light emitting diode D10 are electrically connected to the first end of a resistor R23, the second end of the resistor R23 is connected to the third pin of the charging chip 11 and the first end of the resistor R26, the second end of the resistor R26 is grounded, the seventh pin (pin SW in fig. 2) of the charging chip 11 is electrically connected to the first end of the inductor L3, the second end of the inductor L3 is connected to the first end of the capacitor C32, the first end of the capacitor C35 and the first end of the capacitor C36, and the second end of the capacitor C32, the second end of the capacitor C35 and the second end of the capacitor C36 are all grounded.
The charging chip 11 may be any chip that can satisfy the circuit principle of the present application, and the model thereof is not limited herein.
The utility model also provides a multichannel charging panel, include: a substrate and a charging device 1 as shown in fig. 1. For example, the multi-way charging panel can comprise 10 groups of the charging module groups, and 10 batteries can be charged simultaneously. And the charging is carried out quickly in the early period of charging, and the charging is carried out on the rechargeable battery in a constant current charging mode after the charging is carried out to 3.8V. The charging connectors 12 of each set of the charging devices 1 include a 2PIN charging connector, a 3PIN charging connector, and a 4PIN charging connector. The charging lamps 14 of the charging device 1 include a white charging lamp, a red charging lamp, and a green charging lamp. And after the multi-path charging panel is supplied with 5V direct current, the white charging lamp of each group of charging devices 1 is always on. After a battery is inserted into a certain charging device 1, the red charging lamp of the charging device is highlighted, after the battery is fully charged, the corresponding red charging lamp is turned off, and the green charging lamp is turned on until the battery is disconnected from the charging device 1. (when the battery is not inserted, the red charge indicator light blinks slightly).
To sum up, the utility model provides a charging device and multichannel charging panel, wherein, charging device includes more than one charging module group, and every charging module group includes: the charging chip is electrically connected with the input power line; the charging connector is electrically connected with the charging chip; the aluminum electrolysis is electrically connected between the input power line and the charging chip; the power inductor is electrically connected between the charging connector and the charging chip; the charging connector at least comprises charging connection ports with more than two different PIN PINs. The multi-path charging panel comprises the charging device, can charge batteries with various specifications at the same time, and is flexible, quick and convenient to charge. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A charging device, comprising more than one charging module group, each charging module group comprising:
The charging chip is electrically connected with the input power line;
The charging connector is electrically connected with the charging chip;
The aluminum electrolysis is electrically connected between the input power line and the charging chip;
The power inductor is electrically connected between the charging connector and the charging chip;
The charging connector at least comprises charging connection ports with more than two different PIN PINs.
2. The charging device of claim 1, wherein the charging connector comprises at least two of a 2PIN charging connector, a 3PIN charging connector, and a 4PIN charging connector.
3. The charging device of claim 1, wherein the charging device comprises a filtering module consisting of a plurality of capacitors connected in parallel.
4. A charging arrangement as claimed in claim 3, in which the filtering module comprises a number of resistors connected in series and/or in parallel.
5. The charging device of claim 1, wherein the charging device comprises a charging light, the charging light being electrically connected to the charging chip.
6. The charging device of claim 1, wherein in each charging module group, the charging connection ports of the two or more different PIN PINs are connected with the charging chip through the same line.
7. The charging device of claim 1, wherein the charging connection ports of the two or more different PIN PINs in each charging module group are grounded through the same line.
8. The charging device according to claim 1, wherein the first pin of the charging chip is electrically connected to the first input terminal of the input power line, the second terminal of the input power line is electrically connected to ground, and two terminals of the element D104 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, respectively, the element D104 is a zener diode, two terminals of the resistor R104 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, two terminals of the capacitor C107 are electrically connected to the first input terminal of the input power line and the second input terminal of the input power line, respectively, a first terminal of the resistor R105 is electrically connected to a first terminal of the capacitor C108, a second terminal of the resistor R105 is electrically connected to the first input terminal of the input power line, and a second terminal of the capacitor C108 is electrically connected to the second input terminal of the input power line, the first input end of the input power line is grounded through a capacitor C1, a capacitor C127, a capacitor C129, a capacitor C130, a capacitor C103, a capacitor C104, a capacitor C105 and a capacitor C106, respectively, the first PIN of the charging chip is further grounded through a capacitor C27, a capacitor C28 and a resistor R24 and a resistor R25 which are connected in series, respectively, the second PIN of the charging chip is grounded through a capacitor C29, the third PIN of the charging chip is electrically connected with the first end of a resistor R410, the second end of the resistor R410 is electrically connected with the first PIN of a 3PIN charging connector, the second PIN of the 3PIN charging connector is electrically connected with the fourth PIN of the charging chip, the second PIN of the 3PIN charging connector is further electrically connected with the cathode of a diode TVS109, the cathode of the diode TVS108, the cathode of the voltage regulator D103 and the first end of the capacitor C113, the anode of the diode TVS109, the anode of the diode TVS108, the anode of the diode D103 and the second end of the capacitor C113 are grounded, the cathode of the diode TVS109 is further connected to the test point TP106, the cathode of the diode TVS108 is further connected to the test point TP105, the second PIN of the 3PIN charging connector is electrically connected to the first PIN of the 4PIN charging connector, the first PIN of the 2PIN charging connector is electrically connected to the first PIN of the charging chip, the second PIN of the 4PIN charging connector and the second PIN of the 2PIN charging connector are grounded together with the third PIN of the 3PIN charging connector, the fifth PIN of the charging chip is electrically connected to the cathode of the light emitting diode D9, the sixth PIN of the charging chip is electrically connected to the cathode of the light emitting diode D10, the light emitting diode D9 and the light emitting diode D10 are electrically connected to the first end of the resistor R23, the second end of the resistor R23 is connected to the third PIN of the charging chip and the first end of the resistor R26, the second end of the resistor R26 is grounded, the seventh pin of the charging chip is electrically connected with the first end of the inductor L3, the second end of the inductor L3 is respectively connected with the first end of the capacitor C32, the first end of the capacitor C35 and the first end of the capacitor C36, and the second end of the capacitor C32, the second end of the capacitor C35 and the second end of the capacitor C36 are all grounded.
9. A charging device is characterized by comprising a charging chip, a charging unit and a control unit, wherein the charging chip is electrically connected with an input power line; and more than one charging module group, wherein, at least one charging module group includes:
the charging connector is electrically connected with the charging chip;
The aluminum electrolysis is electrically connected between the input power line and the charging chip;
The power inductor is electrically connected between the charging connector and the charging chip;
The charging connector at least comprises charging connection ports with more than two different PIN PINs.
10. A multi-way charging pad, comprising: a substrate and a charging device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880949.3U CN209786846U (en) | 2019-06-12 | 2019-06-12 | Charging device and multi-path charging panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880949.3U CN209786846U (en) | 2019-06-12 | 2019-06-12 | Charging device and multi-path charging panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209786846U true CN209786846U (en) | 2019-12-13 |
Family
ID=68788926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920880949.3U Active CN209786846U (en) | 2019-06-12 | 2019-06-12 | Charging device and multi-path charging panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209786846U (en) |
-
2019
- 2019-06-12 CN CN201920880949.3U patent/CN209786846U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202488535U (en) | Mobile terminal for displaying state of electric quantity in real time | |
| CN206059872U (en) | A kind of data wire that can show charge capacity | |
| CN209786846U (en) | Charging device and multi-path charging panel | |
| CN206633837U (en) | A kind of electric automobile, charge indicator and its charging indication | |
| CN102148464A (en) | Power socket with USB (universal serial bus) interface | |
| US10534024B2 (en) | Single pole low-cost expandable smart panel monitoring and control system | |
| CN206650453U (en) | Multiplex roles quick charge cable | |
| CN207542819U (en) | A kind of USB charging wires with warning lamp | |
| CN209765850U (en) | Capacitor charging and discharging microscopic process demonstration instrument | |
| CN202172183U (en) | Power socket with circuit status indicating function | |
| CN105470758A (en) | USB connecting line | |
| CN212991495U (en) | Power plug capable of indicating current magnitude | |
| CN217642037U (en) | Plug board of weak current power supply system | |
| CN209375167U (en) | A kind of battery charge maintenance device | |
| EP0929130A1 (en) | An electric plug socket | |
| CN209390425U (en) | A kind of high evenness LED lamp bead circuit | |
| CN214539939U (en) | Capacitance pen | |
| CN107202295A (en) | Light pipe for emergent light pipe and for charging | |
| CN209358684U (en) | A kind of TV SKD test power supply | |
| CN220234213U (en) | Thermal imaging battery protection circuit | |
| CN215815122U (en) | Liquid crystal display screen detection device | |
| CN206060265U (en) | Bi-colour light battery capacity indication circuit | |
| CN212012191U (en) | Vehicle-mounted charger adapter with lamp display and automatic power-off functions | |
| CN210327016U (en) | Surge-proof overvoltage protection circuit and mobile terminal | |
| CN214846291U (en) | Energy efficiency controller circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |