CN221042376U - Power supply circuit, main board and electronic equipment of fuel gauge - Google Patents
Power supply circuit, main board and electronic equipment of fuel gauge Download PDFInfo
- Publication number
- CN221042376U CN221042376U CN202323026070.8U CN202323026070U CN221042376U CN 221042376 U CN221042376 U CN 221042376U CN 202323026070 U CN202323026070 U CN 202323026070U CN 221042376 U CN221042376 U CN 221042376U
- Authority
- CN
- China
- Prior art keywords
- electricity
- battery
- electricity meter
- power supply
- storage module
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 38
- 230000005611 electricity Effects 0.000 claims abstract description 178
- 239000003990 capacitor Substances 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides an electricity meter power supply circuit, a main board and electronic equipment, wherein the electricity meter power supply circuit is used for being connected with a battery and comprises the following components: an electricity meter and an electricity storage module; the electricity meter comprises an input end, and the electricity storage module comprises a connecting end; the input end of the fuel gauge and the connecting end of the power storage module are connected with the first power supply end of the battery; when the battery is disassembled, the connecting end of the electricity storage module is communicated with the input end of the electricity meter, and the electricity storage module supplies stored electric energy to the electricity meter. The application can keep providing working power for the fuel gauge when the battery is dismounted, so that the fuel gauge can keep the recorded electric quantity data, and the technical effect that the fuel gauge can accurately record the electric quantity data of the battery mounted after the battery is dismounted is realized.
Description
Technical Field
The application relates to the technical field of power supply circuits of fuel gauges, in particular to a power supply circuit of a fuel gauge, a main board and electronic equipment.
Background
The fuel gauge is a component for recording the fuel level data of the battery. In the prior art, the fuel gauge is disposed on a motherboard of the electronic device, and when the battery is mounted to the electronic device, the battery provides an operating power supply for the fuel gauge, so that the fuel gauge can record the fuel data of the battery. However, when the electronic device removes the battery, the electricity meter loses its operating power, resulting in a loss of recorded electricity data. Therefore, when the battery is mounted to the electronic device again, the electricity meter cannot continue to accurately record the electricity data of the battery due to the loss of the previous electricity data.
Disclosure of utility model
The application aims to overcome the defects and shortcomings in the prior art and provide a power supply circuit, a main board and electronic equipment of an electricity meter, which can keep providing a working power supply for the electricity meter when a battery is disassembled, so that the electricity meter can keep recorded electricity data, and the technical effect that the electricity meter can accurately record the electricity data of the battery which is assembled after the battery is disassembled is realized.
A first embodiment of the present application provides an electricity meter power supply circuit for connection to a battery; the battery comprises a first power supply end; the circuit comprises: the electricity meter, the electricity receiving end and the electricity storage module; the electricity meter comprises an input end, and the electricity storage module comprises a connecting end;
The input end of the electricity meter and the connecting end of the electricity storage module are connected with the electricity receiving end, and the electricity receiving end is detachably connected with the first power supply end of the battery; when the battery is detached, the connection end of the electricity storage module is communicated with the input end of the electricity meter, and the electricity storage module can supply stored electric energy to the electricity meter.
A second embodiment of the application provides a motherboard comprising an electricity meter power supply circuit as described above.
The third embodiment of the application provides an electronic device, which comprises a main board; the main board is provided with the electricity meter power supply circuit.
Compared with the prior art, in the electricity meter power supply circuit, when the battery is installed, the input end of the electricity meter and the connecting end of the electricity storage module are connected with the electricity receiving end, the electricity receiving end is detachably connected with the first power supply end of the battery, the battery supplies power to the electricity meter and the electricity storage module respectively, when the battery is detached, the connecting end of the electricity storage module is communicated with the input end of the electricity meter, the electricity storage module can supply stored electric energy to the electricity meter, so that the electricity meter can keep recorded electric quantity data, and when the detached battery is installed again, the electricity meter can continuously record the electric quantity data of the battery, and the technical effect that the electricity meter can accurately record the electric quantity data of the battery installed again after the detachment is achieved.
In order that the application may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a circuit schematic of an electricity meter power supply circuit according to one embodiment of the application.
FIG. 2 is a circuit schematic of a power storage module of an electricity meter power circuit according to one embodiment of the application.
FIG. 3 is a circuit schematic of a buck module of an electricity meter power circuit according to one embodiment of the application.
FIG. 4 is a circuit schematic of the main chip of the electricity meter power circuit of one embodiment of the application.
Fig. 5 is a schematic structural diagram of a motherboard according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
1. An electricity meter power supply circuit; 11. an electricity meter; 12. an electric terminal; 13. a power storage module; 131. a storage capacitor; 133. a current limiting resistor; 14. a buck module; 15. a main chip; 3. a battery; 5. a main board; 7. an electronic device.
Detailed Description
The following description of the embodiments of the present application 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 application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to better understand the technical scheme of the application, the following describes related application scenarios of the application.
The application is applied to a power supply circuit of the fuel gauge, the fuel gauge is a component for recording the electric quantity data of the battery, and the main chip of the electronic equipment can read the electric quantity data of the battery from the fuel gauge so as to display the electric quantity data to a user, thereby being beneficial to the user to know the electric quantity information of the battery. In the related art, an electricity meter is provided on a main board of an electronic device, and when a battery is mounted to the electronic device, the battery provides an operating power for the electricity meter, so that the electricity meter can record electricity data of the battery. However, in the detachable battery type design in which the battery pack is separated from the electronic device, if the recording function of the battery power is to be maintained, the power meter is required to be provided in the battery pack or the electronic device to realize the recording function of the power meter.
For the scheme of installing the fuel gauge on the battery pack, the fuel gauge is continuously supplied by the battery pack, but a signal pin for transmitting a fuel gauge signal is required to be additionally reserved on the battery, and the cost of arranging the fuel gauge on each battery pack is too high.
For the scheme of setting up the fuel gauge in electronic equipment, when the battery is dismantled to electronic equipment, the fuel gauge can lose operating power, leads to the loss of the electric quantity data of record. Therefore, the power supply circuit, the main board and the electronic equipment of the fuel gauge are provided with the power storage module, so that a working power supply can be provided for the fuel gauge when the battery is detached, the time for storing the recorded electric quantity data of the fuel gauge is prolonged, and the fuel gauge can continuously and accurately record the electric quantity data of the battery when the detached battery is reinstalled.
Referring to fig. 1, a circuit configuration diagram of an electricity meter power supply circuit 1 according to an embodiment of the present application is shown, the electricity meter power supply circuit 1 being configured to be connected to a battery 3. The battery 3 may be a single battery, a battery module including a plurality of batteries, or a battery pack including a plurality of battery modules. Specifically, when the battery 3 is mounted, the electricity meter power supply circuit 1 is connected to the battery 3 in conduction, and when the battery 3 is detached, the electricity meter power supply circuit 1 is disconnected from the battery 3.
The electricity meter power supply circuit 1 of the embodiment of the application includes: an electricity meter 11, an electricity receiving terminal 12 and an electricity storage module 13; the electricity meter 11 comprises an input terminal and the electricity storage module 13 comprises a connection terminal; the input end of the electricity meter 11 and the connecting end of the electricity storage module 13 are connected with the electricity receiving end 12, and the electricity receiving end 12 is detachably connected with the first power supply end of the battery 3; when the battery 3 is detached, the connection terminal of the electricity storage module 13 is conducted with the input terminal of the electricity meter 11, and the electricity storage module 13 can supply stored electric energy to the electricity meter 11.
The power storage module 13 is an electronic module capable of storing and releasing electric energy, and may be an electronic element such as a capacitor or a super capacitor, or may be a circuit module having a function of storing and releasing electric energy. Wherein the more electrical energy the electricity storage module 13 stores, the longer the electricity meter 11 can keep the electricity data from losing after the battery 3 is detached.
Compared with the prior art, in the electricity meter power supply circuit 1, when the battery 3 is installed, the input end of the electricity meter 11 and the connecting end of the electricity storage module 13 are connected with the electricity receiving end 12, the electricity receiving end 12 is detachably connected with the first power supply end of the battery 3, the battery 3 supplies power to the electricity meter 11 and the electricity storage module 13 respectively through the electricity receiving end 12, when the battery 3 is detached, the connecting end of the electricity storage module 13 is communicated with the input end of the electricity meter 11, the electricity storage module 13 supplies stored electric energy to the electricity meter 11, so that the electricity meter 11 can keep recorded electric quantity data, and when the detached battery 3 is installed again, the electricity meter 11 can continuously record the electric quantity data of the battery 3, and the technical effect that the electricity meter 11 can accurately record the electric quantity data of the battery 3 installed again after the detachment is achieved.
In one possible embodiment, the power storage module 13 includes a power storage capacitor 131; the storage capacitor 131 includes a first terminal and a second terminal; the first end of the storage capacitor 131 is connected with the first power supply end of the battery 3, and the second end of the storage capacitor 131 is grounded.
The storage capacitor 131 may be a super capacitor that stores more electric energy, for example, the storage capacitor 131 is a super capacitor with a withstand voltage of 3.3V.
In the present embodiment, the electricity storage capacitor 131 may store the electric energy supplied from the battery 3 when the battery 3 is mounted, and the electricity storage capacitor 131 may supply the electricity to the electricity meter 11 instead of the battery 3 when the battery 3 is detached.
Referring to fig. 2, in one possible embodiment, the power storage module 13 further includes a current limiting resistor 133; the first end of the storage capacitor 131 is connected to the ground 12 via the current limiting resistor 133.
In this embodiment, since the input end of the electricity meter 11 is connected to the power connection end 12, the first end of the electricity storage capacitor 131 is connected to the power connection end 12 via the current limiting resistor 133, and therefore, the first end of the electricity storage capacitor 131 is also connected to the input end of the electricity meter 11 via the current limiting resistor 133, when the battery 3 is detached, the electricity storage capacitor 131 provides the working power to the electricity meter 11 via the current limiting resistor 133, and at this time, the current can be limited by the current limiting resistor 133, so as to improve the safety of the electricity storage capacitor 131 providing the working power to the electricity meter 11.
Referring to fig. 3, in one possible embodiment, the apparatus further comprises a buck module 14; the input of the electricity meter 11 and the connection of the electricity storage module 13 are connected to the electricity connection 12 via the voltage step-down module 14.
In the present embodiment, when the battery 3 supplies power to the electricity meter 11 and the electricity storage module 13 via the electricity receiving terminal 12, the power supply safety can be improved under the protection of the step-down module 14.
As a possible connection manner, when the electricity storage module 13 includes the electricity storage capacitor 131, the connection between the electricity receiving end 12 and the connection end of the electricity storage module 13 via the voltage reduction module 14 is as follows: the power connection end 12 is connected with a first end of the power storage capacitor 131 through the voltage reduction module 14, and a second end of the power storage capacitor 131 is grounded; when the electricity storage module 13 includes the electricity storage capacitor 131 and the current limiting resistor 133, the connection between the electricity receiving end 12 and the connection end of the electricity storage module 13 via the voltage reducing module 14 is as follows: the power connection end 12 is connected to a first end of a current limiting resistor 133 via the voltage dropping module 14, a second end of the current limiting resistor 133 is connected to a first end of the storage capacitor 131, and a second end of the storage capacitor 131 is grounded.
In a possible embodiment, the buck module 14 comprises at least one diode, the anode of which is connected to the electrical connection 12, and the cathode of which is connected to the input of the fuel gauge 11 and to the connection of the storage module 13, respectively.
When the step-down module 14 includes two or more diodes, the anode of the first diode is connected to the power connection terminal 12, the anode of the next diode is connected to the cathode of the last diode, and the cathode of the last diode is connected to the input terminal of the fuel gauge 11 and the connection terminal of the power storage module 13, respectively.
In this embodiment, when the battery 3 provides the working power to the electricity meter 11 via the power receiving terminal 12, the diode can limit the current to improve the safety of providing the working power to the electricity meter 11, and prevent the situation that the battery 3 or the electricity storage module 13 cannot stably provide the working power to the electricity meter 11 due to the current backflow when the electric energy of the battery 3 is far smaller than the electric energy of the electricity storage module 13.
When the electricity storage module 13 includes the electricity storage capacitor 131, the connection terminal 12 is connected to the input terminal of the electricity meter 11 and the connection terminal of the electricity storage module 13 via the voltage reduction module 14, respectively, as a possible connection manner: the power connection end 12 is respectively connected with the input end of the fuel gauge 11 and the first end of the electric storage capacitor 131 through the diode of the voltage reduction module 14, and the second end of the electric storage capacitor 131 is grounded; when the electricity storage module 13 includes the electricity storage capacitor 131 and the current limiting resistor 133, the connection terminal 12 is connected to the input terminal of the electricity meter 11 and the connection terminal of the electricity storage module 13 via the step-down module 14 respectively in the form of: the power connection terminal 12 is connected to the input terminal of the fuel gauge 11 and the first terminal of the current limiting resistor 133 via the diode of the voltage reducing module 14, respectively, and the second terminal of the current limiting resistor 133 is connected to the first terminal of the storage capacitor 131, and the second terminal of the storage capacitor 131 is grounded.
Referring to fig. 4, in one possible embodiment, the device further includes a main chip 15, where the main chip 15 includes an input terminal; the fuel gauge 11 includes an output; the input of the main chip 15 is connected to the output of the electricity meter 11 to read the electricity data recorded by the electricity meter 11.
The main chip 15 is an integrated chip capable of reading the electric quantity data recorded by the electric quantity meter 11, and the main chip 15 can also transmit the read data to the display module so as to convert the electric quantity data into electric quantity information for displaying to a user. The input of the main chip 15 may be connected to the output of the fuel gauge 11 through I2C (serial bus) or i2c+int (serial bus+interrupt signal) to obtain the power data recorded by the fuel gauge 11 and the operating state of the fuel gauge 11.
In this embodiment, the main chip 15 may be used to obtain the electric quantity data recorded by the electric quantity meter 11, which is beneficial for the user to obtain the current electric quantity information of the battery 3.
In one possible embodiment, the main chip 15 comprises a power supply terminal and the battery 3 comprises a second power supply terminal; an input terminal of the main chip 15 is detachably connected to a second power supply terminal of the battery 3.
In this embodiment, the battery 3 may also provide an operating power supply for the main chip 15 to support the operation of the main chip 15. The manner in which the input end of the main chip 15 is connected to the second power supply end of the battery 3 may be that the input end of the main chip 15 is connected to the second power supply end of the battery 3 through a power management module of the electronic device, so as to control the voltage and/or the current of the working power supplied to the main chip 15 through the power management module of the electronic device.
In one possible embodiment, the main chip 15 further includes a temperature detecting end, and the temperature detecting end of the main chip 15 is connected to a thermistor, and the thermistor is used for converting the temperature of the battery 3 into a resistance value, and the temperature detecting end of the main chip 15 detects the resistance value of the thermistor to obtain the temperature of the battery 3.
After the main chip 15 obtains the temperature of the battery 3, the temperature information may be transmitted to a display module to display the current temperature information of the battery 3 to a user. The thermistor may be an NTC thermistor (negative temperature coefficient thermistor), which is a type of sensor resistor whose resistance value decreases with an increase in temperature, and may be adjacent to the battery 3 or may be in contact with the battery 3 to detect the temperature of the environment in which the battery 3 is located or the surface temperature of the battery 3 as the temperature of the battery 3.
In the present embodiment, the main chip 15 can accurately sense the temperature of the battery 3 through the thermistor.
Referring to fig. 5, a second embodiment of the present application provides a motherboard 5, the motherboard 5 including an electricity meter power supply circuit 1 as described above.
It should be noted that, the main board 5 provided in the second embodiment of the present application and the electricity meter power supply circuit 1 in the first embodiment of the present application belong to the same concept, and the implementation process is detailed in the first embodiment, and will not be described herein.
Referring to fig. 6, a third embodiment of the present application provides an electronic device 7, wherein the electronic device 7 includes a motherboard 5; the main board 5 is provided with the electricity meter power supply circuit 1 as described above.
It should be noted that, the electronic device 7 provided in the third embodiment of the present application and the electricity meter power supply circuit 1 in the first embodiment of the present application belong to the same concept, and the implementation process is detailed in the first embodiment, and will not be described herein.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. An electricity meter power supply circuit for connection with a battery; the battery comprises a first power supply end; characterized in that the circuit comprises: the electricity meter, the electricity receiving end and the electricity storage module; the electricity meter comprises an input end, and the electricity storage module comprises a connecting end;
The input end of the electricity meter and the connecting end of the electricity storage module are connected with the electricity receiving end, and the electricity receiving end is detachably connected with the first power supply end of the battery; when the battery is detached, the connection end of the electricity storage module is communicated with the input end of the electricity meter, and the electricity storage module can supply stored electric energy to the electricity meter.
2. The electricity meter power circuit of claim 1, wherein: the electricity storage module comprises an electricity storage capacitor; the electricity storage capacitor comprises a first end and a second end; the first end of the electricity storage capacitor is connected with the first power supply end of the battery, the second end of the electricity storage capacitor is grounded, and the electricity storage capacitor is a 3.3V withstand voltage super capacitor.
3. The electricity meter power circuit of claim 2, wherein: the power storage module further comprises a current limiting resistor; the first end of the electricity storage capacitor is connected with the electricity receiving end through the current limiting resistor.
4. The electricity meter power circuit of claim 1, wherein: the system also comprises a depressurization module; the input end of the electricity meter and the connecting end of the electricity storage module are connected with the electricity receiving end through the voltage reduction module.
5. The electricity meter power circuit of claim 4, wherein: the voltage reduction module comprises at least one diode, wherein the anode of the diode is connected with the electric connection end, and the cathode of the diode is respectively connected with the input end of the fuel gauge and the connection end of the electric storage module.
6. The electricity meter power circuit of claim 1, wherein: the chip comprises an input end and a main chip; the electricity meter includes an output;
and the input end of the main chip is connected with the output end of the fuel gauge so as to read the electric quantity data recorded by the fuel gauge.
7. The electricity meter power circuit of claim 6, wherein: the main chip comprises a power supply end, and the battery comprises a second power supply end; the input end of the main chip is detachably connected with the second power supply end of the battery.
8. The electricity meter power circuit of claim 6, wherein: the main chip further comprises a temperature detection end, the temperature detection end of the main chip is connected with a thermistor, the thermistor is used for converting the temperature of the battery into a resistance value, and the temperature detection end of the main chip detects the resistance value of the thermistor so as to obtain the temperature of the battery.
9. A motherboard, characterized in that: the motherboard comprising the electricity meter power supply circuit of any one of claims 1-7.
10. An electronic device, characterized in that: the electronic equipment comprises a main board; the electricity meter power supply circuit of any one of claims 1-7 disposed on said motherboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026070.8U CN221042376U (en) | 2023-11-08 | 2023-11-08 | Power supply circuit, main board and electronic equipment of fuel gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323026070.8U CN221042376U (en) | 2023-11-08 | 2023-11-08 | Power supply circuit, main board and electronic equipment of fuel gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221042376U true CN221042376U (en) | 2024-05-28 |
Family
ID=91138669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323026070.8U Active CN221042376U (en) | 2023-11-08 | 2023-11-08 | Power supply circuit, main board and electronic equipment of fuel gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221042376U (en) |
-
2023
- 2023-11-08 CN CN202323026070.8U patent/CN221042376U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4553081A (en) | Portable battery powered system | |
| CN103427123B (en) | A kind of method and handheld terminal maximizing use battery capacity | |
| US11054850B2 (en) | Portable solar power management system | |
| US7977912B2 (en) | Electronic apparatus and battery unit | |
| CN112201011A (en) | Low-power consumption master control system with multiple sensor data acquisition and transmission | |
| CN221042376U (en) | Power supply circuit, main board and electronic equipment of fuel gauge | |
| CN203377352U (en) | Power management circuit and hand-held terminal | |
| CN102032860A (en) | Wireless displacement sensor | |
| CN212807336U (en) | Temperature recorder | |
| CN104160579B (en) | Charging a battery based on stored battery characteristics | |
| CN213934872U (en) | Serial port-to-FDCAN bus conversion recording device | |
| CN201788268U (en) | Capacity checking device for lithium batteries | |
| CN210270872U (en) | Portable serial port detector | |
| CN202995004U (en) | Sensor for parameter of storage battery pack | |
| CN217931967U (en) | Communication battery testing tool | |
| CN215728635U (en) | Battery chip test module | |
| CN220419443U (en) | Phase collector based on optical signal measurement | |
| CN218629982U (en) | Remote loop resistance tester | |
| CN201266209Y (en) | Electric energy meter | |
| CN2865099Y (en) | Breaking protection circuit | |
| CN113141050A (en) | Electronic device | |
| CN221804199U (en) | Test board for testing new energy vulnerable driving chip | |
| CN214954911U (en) | Abnormal power-off protection circuit | |
| CN218771257U (en) | Circuit and reactor integrated protection device | |
| CN218850419U (en) | Intelligent flying battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |