CN217036832U - Power supply device of terminal equipment and terminal equipment - Google Patents
Power supply device of terminal equipment and terminal equipment Download PDFInfo
- Publication number
- CN217036832U CN217036832U CN202220785847.5U CN202220785847U CN217036832U CN 217036832 U CN217036832 U CN 217036832U CN 202220785847 U CN202220785847 U CN 202220785847U CN 217036832 U CN217036832 U CN 217036832U
- Authority
- CN
- China
- Prior art keywords
- power supply
- resistor
- supply battery
- comparator
- battery
- 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
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a power supply device of terminal equipment and the terminal equipment, comprising: the first input end of the comparator is connected with the anode of the first power supply battery, and the second input end of the comparator is connected with the reference end of the reference voltage chip and used for outputting a first level signal or a second level signal according to the actual voltage of the first power supply battery; the first control circuit is used for switching off the power supply circuit of the first power supply battery according to the first level signal and switching on the power supply circuit of the first power supply battery by the second level signal; and the second control circuit is used for switching on the power supply circuit of the second power supply battery according to the first level signal and switching off the power supply circuit of the second power supply battery according to the second level signal. Therefore, the problems that convenience and user experience are poor due to the fact that the batteries of the terminal equipment adopting the double batteries are manually switched in the related technology are solved.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a power supply device for a terminal device and a terminal device.
Background
For some terminal devices, for example, mobile terminal devices, a single battery power supply scheme is generally adopted, a manual replacement mode is adopted when the battery power is insufficient, the use convenience is reduced, and once a spare battery is forgotten to be carried, the device cannot work easily.
The problem of forgetting to take a standby battery is solved by adopting a double-battery scheme in the related technology, and when the voltage of the current power supply battery is detected to be insufficient, a power shortage warning is sent out to prompt the replacement of the battery by adopting a voltage detection mode. However, the dual-battery power supply scheme in the related art still needs manual switching during battery switching, which reduces the convenience of use and causes poor user experience.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply device of terminal equipment and the terminal equipment, which are used for solving the problems of poor convenience and user experience and the like caused by manual battery switching of the terminal equipment adopting double batteries in the related technology.
The utility model provides a power supply device of terminal equipment, comprising: the power supply device comprises a plurality of power supply batteries and a reference voltage chip, wherein the plurality of power supply batteries comprise a first power supply battery and a second power supply battery; a first input end of the comparator is connected with the anode of the first power supply battery, a second input end of the comparator is connected with a reference end of the reference voltage chip, and the comparator is used for outputting a first level signal when the actual voltage of the first power supply battery is smaller than the power supply voltage and outputting a second level signal when the actual voltage of the first power supply battery is larger than or equal to the power supply voltage; the first control circuit is used for switching off the power supply circuit of the first power supply battery according to the first level signal and switching on the power supply circuit of the first power supply battery according to the second level signal; and the second control circuit is used for switching on the power supply circuit of the second power supply battery according to the first level signal and switching off the power supply circuit of the second power supply battery according to the second level signal.
Further, the method also comprises the following steps: one end of the first resistor is connected with the positive electrode of the first power supply battery, and the other end of the first resistor is connected with the first input end of the comparator; one end of the second resistor is grounded, and the other end of the second resistor is connected with the second input end of the comparator; and one end of the third resistor is connected with the anode of the first power supply battery, and the other end of the third resistor is connected with the cathode of the reference voltage chip.
Further, the cathode of the reference voltage chip is connected with the reference end of the reference voltage chip.
Further, the anode of the reference voltage chip is grounded.
Further, the anode of the comparator is connected with the anode of the first power supply battery, and the cathode of the comparator is grounded.
Further, the first control circuit includes: the anode of the diode is connected with the output end of the comparator; one end of the fourth resistor is connected with the cathode of the diode; one end of the fifth resistor is connected with the anode of the first power supply battery, the other end of the fifth resistor is connected with the other end of the fourth resistor, and the cathode of the first power supply battery is grounded; and the source electrode of the first MOS tube is connected with the anode of the first power supply battery, the drain electrode of the first MOS tube is connected with the other end of the fourth resistor, and the grid electrode of the first MOS tube is connected with the power management circuit.
Further, the second control circuit includes: one end of the sixth resistor is connected with the output end of the comparator; one end of the seventh resistor is connected with the anode of the second power supply battery, wherein the cathode of the second power supply battery is grounded; one end of the eighth resistor is connected with the other end of the seventh resistor; a collector of the triode is connected with the other end of the eighth resistor, a base of the triode is connected with the other end of the sixth resistor, and an emitter of the triode is grounded; and the source electrode of the second MOS tube is connected with the anode of the second power supply battery, the drain electrode of the second MOS tube is connected with one end of the eighth resistor, and the grid electrode of the second MOS tube is connected with the power management circuit.
The utility model also provides terminal equipment which comprises the power supply device of the terminal equipment.
Therefore, the utility model has at least the following beneficial effects:
can realize through comparator and control circuit that automatic switch-over is stand-by battery when current battery power is not enough, need not software program intervention or artifical change battery, it is nimble more convenient, improve the convenience that the battery switches, satisfy user's continuation of the journey demand, promote the use of usefulness and experience. Therefore, the technical problems that convenience and user experience are poor due to the fact that the batteries of the terminal equipment adopting the double batteries are manually switched in the related technology are solved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram illustrating a power supply apparatus of a terminal device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a power supply device of a terminal device according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a power supply apparatus of a terminal device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
A power supply device for a terminal device and a terminal device according to an embodiment of the present invention are described below with reference to the drawings. In the power supply device, when the current battery is insufficient, the battery can be automatically switched to a standby battery through a comparator and a control circuit, software program intervention or manual battery replacement is not needed, the power supply device is more flexible and convenient, the convenience of battery switching is improved, the endurance requirement of a user is met, and the use experience is improved. Therefore, the technical problems that the convenience and the user experience are poor due to the fact that the battery is manually switched by the terminal equipment adopting the double batteries in the related technology are solved.
Specifically, fig. 1 is a block schematic diagram of a power supply device of a terminal device according to an embodiment of the present invention.
As shown in fig. 1, the power supply device 10 of the terminal device includes: a plurality of power supply batteries 100, a first control circuit 200, a second control circuit 300, a reference voltage chip U1, and a comparator U2.
The number of the power supply batteries may be specifically set according to actual use requirements, and is not particularly limited. In the present embodiment, as shown in fig. 2, taking an example that the plurality of power supply batteries 100 may include a first power supply battery J1 and a second power supply battery J2 for explanation, the embodiment of the present invention may implement automatic switching between the first power supply battery J1 and the second power supply battery J2. A first input terminal of the comparator U2 is connected to the positive electrode of the first power supply battery J1, and a second input terminal of the comparator U2 is connected to the reference terminal of the reference voltage chip U1, and is configured to output a first level signal when the actual voltage of the first power supply battery J1 is lower than the power supply voltage, and output a second level signal when the actual voltage of the first power supply battery J1 is greater than or equal to the power supply voltage. The first control circuit 200 and the second control circuit 300 are respectively connected with the output end of the comparator U2, wherein the first control circuit 200 is used for disconnecting the power supply circuit of the first power supply battery J1 according to a first level signal and conducting the power supply circuit of the first power supply battery J1 by a second level signal; the second control circuit 300 is configured to turn on the power supply circuit of the second power supply battery J2 according to the first level signal, and turn off the power supply circuit of the second power supply battery J2 according to the second level signal.
The power supply voltage may be understood as a voltage required by the terminal device to operate normally, and may be specifically set according to an actual situation, which is not specifically limited.
It can be understood that the embodiment of the utility model can realize that the standby battery is automatically switched when the current power supply battery is insufficient in electric quantity, software program intervention or manual battery replacement is not needed, the operation is more flexible and convenient, and the requirement of endurance design can be met.
In this embodiment, as shown in fig. 2, the power supply device 10 according to the embodiment of the present application further includes: the circuit comprises a first resistor R1, a second resistor R2 and a third resistor R3. The third resistor R3 may be a current limiting resistor.
Specifically, as shown in fig. 3, one end of the first resistor R1 is connected to the positive electrode of the first power supply battery J1; one end of the second resistor R2 is grounded, and the other end of the second resistor R2 is connected with the second input end of the comparator U2; one end of the third resistor R3 is connected with the positive electrode of the first power supply battery J1, the other end of the third resistor R3 is connected with the cathode of the reference voltage chip U1, the cathode of the reference voltage chip U1 is connected with the reference end of the reference voltage chip U1, and the anode of the reference voltage chip U1 is grounded; the anode of the comparator U2 is connected with the anode of the first power supply battery J1, the cathode of the comparator U2 is grounded, the first input end of the comparator U2 is connected with the other end of the first resistor R1, the second input end of the comparator U2 is connected with the reference end of the reference voltage chip U1, and the comparator U2 is used for outputting a first level signal when the actual voltage of the first power supply battery J1 is smaller than the power supply voltage and outputting a second level signal when the actual voltage of the first power supply battery J1 is larger than or equal to the power supply voltage. The first level signal may be a high level signal, and the second level signal may be a low level signal.
In the present embodiment, as shown in fig. 3, the output terminals V of the first control circuit 200 and the second control circuit 300OUTAre all connected with electricityThe source management circuit is connected, wherein the power management circuit can be a power management IC.
In the present embodiment, as shown in fig. 3, the first control circuit 200 includes: the diode D1, the fourth resistor R4, the fifth resistor R5 and the first MOS transistor Q1. The first MOS transistor Q1 belongs to the control switch device, and the fourth resistor R4 and the fifth resistor R5 may be pull-up resistors.
Specifically, as shown in fig. 3, the anode of the diode D1 is connected to the output terminal of the comparator U2; one end of the fourth resistor R4 is connected with the cathode of the diode D1; one end of a fifth resistor R5 is connected with the positive electrode of the first power supply battery J1, the other end of the fifth resistor R5 is connected with the other end of the fourth resistor R4, and the negative electrode of the first power supply battery J1 is grounded; the source electrode of the first MOS transistor Q1 is connected with the positive electrode of the first power supply battery J1, the drain electrode of the first MOS transistor Q1 is connected with the other end of the fourth resistor R4, and the gate electrode of the first MOS transistor Q1 is connected with the power management circuit.
In the present embodiment, as shown in fig. 3, the second control circuit 300 includes: the circuit comprises a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a second MOS transistor Q2 and a triode Q3. The seventh resistor R7 and the eighth resistor R8 may be pull-up resistors, the sixth resistor R6 may be a bias resistor, and the second MOS transistor Q2 and the transistor Q3 belong to control switching devices.
Specifically, as shown in fig. 3, one end of the sixth resistor R6 is connected to the output end of the comparator U2; one end of the seventh resistor R7 is connected with the positive electrode of the second power supply battery J2, wherein the negative electrode of the second power supply battery J2 is grounded; one end of the eighth resistor R8 is connected with the other end of the seventh resistor R7; a collector of the triode Q3 is connected with the other end of the eighth resistor R8, a base of the triode Q3 is connected with the other end of the sixth resistor R6, and an emitter of the triode Q3 is grounded; the source of the second MOS transistor Q2 is connected to the positive terminal of the second power supply battery J2, the drain of the second MOS transistor Q2 is connected to one end of the eighth resistor R8, and the gate of the second MOS transistor Q2 is connected to the power management circuit.
The operation principle of the power supply device 10 of the terminal device will be explained below, and is shown in fig. 2 and 3, specifically as follows:
the reference voltage chip U1 outputs the reference voltage Vref, the actual voltage V1 of the first power supply battery is divided by the first resistor R1 and the second resistor R2 to generate V-, and the Vref and V-are compared by the comparator U2. The voltage value of V-is generated by dividing the voltage by the first resistor R1 and the second resistor R2, so the resistance value of the resistor can be specifically selected according to the actual requirement of the battery, which is not specifically limited.
If V-is not less than Vref, the actual voltage V1 of the first power supply battery J1 is greater than or equal to the power supply voltage, at this time, the comparator U2 outputs a low level, namely CTRL is equal to 0, a CTRL signal is output to the first control circuit 200, so that the first control circuit 200 is turned on, and the V1 supplies power to the power management circuit through the first MOS transistor Q1 and then supplies power to the power utilization module; at the same time, the CTRL signal is output to the second control circuit 300, causing the second control circuit 300 to disable.
If V- < Vref indicates that the actual voltage V1 of the first power supply battery J1 is smaller than the power supply voltage, and the power of the first power supply battery J1 is insufficient, at this time, the comparator U2 outputs a high level, that is, CTRL equals 1, the CTRL signal is output to the first control circuit 200, so that the first control circuit 200 is turned off; meanwhile, the CTRL signal is output to the second control circuit 310, so that the control circuit 2 is turned on, and the actual voltage V2 of the second power supply battery J2 is supplied to the power management circuit through the second MOS transistor Q2, and then supplied to the power utilization module.
According to the power supply device of the terminal equipment, provided by the embodiment of the utility model, the current battery can be automatically switched to the standby battery when the electric quantity of the battery is insufficient, software program intervention or manual battery replacement is not required, the power supply device is more flexible and convenient, the convenience of battery switching is improved, the cruising demand of a user is met, and the use experience is improved.
In addition, the embodiment of the application also provides a terminal device, which comprises the power supply device of the terminal device of the embodiment. Due to the fact that the power supply device of the terminal equipment is arranged, the terminal equipment can be used for replacing batteries without software program intervention or manual work, and is more flexible and convenient, convenience in battery switching is improved, endurance requirements of users are met, and use experience is improved.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A power supply apparatus for a terminal device, comprising:
the device comprises a plurality of power supply batteries and a reference voltage chip, wherein the plurality of power supply batteries comprise a first power supply battery and a second power supply battery;
a first input end of the comparator is connected with the anode of the first power supply battery, a second input end of the comparator is connected with a reference end of the reference voltage chip, and the comparator is used for outputting a first level signal when the actual voltage of the first power supply battery is smaller than the power supply voltage and outputting a second level signal when the actual voltage of the first power supply battery is larger than or equal to the power supply voltage; and
the first control circuit is used for switching off the power supply circuit of the first power supply battery according to the first level signal and switching on the power supply circuit of the first power supply battery according to the second level signal; and the second control circuit is used for switching on the power supply circuit of the second power supply battery according to the first level signal and switching off the power supply circuit of the second power supply battery according to the second level signal.
2. The apparatus of claim 1, further comprising:
one end of the first resistor is connected with the positive electrode of the first power supply battery, and the other end of the first resistor is connected with the first input end of the comparator;
one end of the second resistor is grounded, and the other end of the second resistor is connected with the second input end of the comparator;
and one end of the third resistor is connected with the anode of the first power supply battery, and the other end of the third resistor is connected with the cathode of the reference voltage chip.
3. The apparatus of claim 2, wherein the cathode of the voltage reference chip is connected to a reference terminal of the voltage reference chip.
4. The apparatus of claim 2, wherein the anode of the reference voltage chip is grounded.
5. The apparatus of claim 1, wherein an anode of the comparator is connected to a positive terminal of the first power supply cell and a cathode of the comparator is grounded.
6. The apparatus of claim 1, wherein the first control circuit comprises:
the anode of the diode is connected with the output end of the comparator;
one end of the fourth resistor is connected with the cathode of the diode;
one end of the fifth resistor is connected with the anode of the first power supply battery, the other end of the fifth resistor is connected with the other end of the fourth resistor, and the cathode of the first power supply battery is grounded;
and the source electrode of the first MOS tube is connected with the anode of the first power supply battery, the drain electrode of the first MOS tube is connected with the other end of the fourth resistor, and the grid electrode of the first MOS tube is connected with the power supply management circuit.
7. The apparatus of claim 1, wherein the second control circuit comprises:
one end of the sixth resistor is connected with the output end of the comparator;
one end of the seventh resistor is connected with the anode of the second power supply battery, wherein the cathode of the second power supply battery is grounded;
one end of the eighth resistor is connected with the other end of the seventh resistor;
a collector of the triode is connected with the other end of the eighth resistor, a base of the triode is connected with the other end of the sixth resistor, and an emitter of the triode is grounded;
and the source electrode of the second MOS tube is connected with the anode of the second power supply battery, the drain electrode of the second MOS tube is connected with one end of the eighth resistor, and the grid electrode of the second MOS tube is connected with the power management circuit.
8. A terminal device, characterized in that it comprises the power supply means of a terminal device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785847.5U CN217036832U (en) | 2022-03-30 | 2022-03-30 | Power supply device of terminal equipment and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785847.5U CN217036832U (en) | 2022-03-30 | 2022-03-30 | Power supply device of terminal equipment and terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217036832U true CN217036832U (en) | 2022-07-22 |
Family
ID=82415425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220785847.5U Active CN217036832U (en) | 2022-03-30 | 2022-03-30 | Power supply device of terminal equipment and terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217036832U (en) |
-
2022
- 2022-03-30 CN CN202220785847.5U patent/CN217036832U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11522369B2 (en) | Battery management device and mobile terminal | |
| CN102044906A (en) | Power supply switching circuit and electronic device capable of automatically switching power supply | |
| US20110025276A1 (en) | Charge control circuit | |
| CN109412255B (en) | Low-loss high-reliability double-circuit power supply switching circuit | |
| CN113741261B (en) | Power-on and power-off control circuit and signal output device | |
| CN217036832U (en) | Power supply device of terminal equipment and terminal equipment | |
| CN211405587U (en) | Automatic switching circuit for lithium battery power supply | |
| CN210780130U (en) | Power-off control circuit | |
| CN216904676U (en) | Power supply switching circuit and electronic equipment | |
| CN207782447U (en) | A kind of battery charging management circuit and bluetooth headset | |
| CN112600283B (en) | Startup and shutdown circuit | |
| CN213585190U (en) | Power control circuit with standby low power consumption | |
| CN212991994U (en) | Battery pack and electric tool | |
| CN111987775A (en) | Power supply control circuit and thermal printer | |
| CN217010387U (en) | RTC battery charge-discharge control circuit | |
| US20140217890A1 (en) | Handheld device and power supply circuit thereof | |
| US20120007566A1 (en) | Charging circuit | |
| CN219643636U (en) | Battery charging switching circuit and lithium battery charging device | |
| CN215498331U (en) | Lithium battery protection circuit | |
| CN209896740U (en) | Turn-off type battery power supply device, battery and electronic equipment | |
| CN219498991U (en) | Battery NTC charging switching circuit and PCB | |
| CN217956942U (en) | Low-power-consumption memory starting circuit | |
| CN218633389U (en) | Battery protection circuit and power supply circuit | |
| CN217215998U (en) | Battery charging management circuit and corresponding intelligent equipment | |
| KR100389964B1 (en) | Power supply for charging a storage battery by solar cells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221028 Address after: 201601 Room 209, Building 7, No. 351, Sizhuan Road, Sijing Town, Songjiang District, Shanghai Patentee after: Shanghai Ankelian Technology Co.,Ltd. Address before: Room 513, floor 5, No. 6, Lane 205, Gaoji Road, Sijing Town, Songjiang District, Shanghai 201601 Patentee before: QUECTEL WIRELESS SOLUTIONS Co.,Ltd. |
|
| TR01 | Transfer of patent right |