CN213547131U - Charging control circuit and battery pole - Google Patents
Charging control circuit and battery pole Download PDFInfo
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- CN213547131U CN213547131U CN202022053155.5U CN202022053155U CN213547131U CN 213547131 U CN213547131 U CN 213547131U CN 202022053155 U CN202022053155 U CN 202022053155U CN 213547131 U CN213547131 U CN 213547131U
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Abstract
The utility model provides a charge control circuit and battery pole, include: the charging chip comprises a configuration pin, wherein the charging chip configures a charging current according to the configuration current on the configuration pin so as to charge the charging element; the impedance network is connected with the configuration pins; and the control chip comprises a control pin, wherein the control pin is connected with the impedance network, and the control chip outputs a control signal through the control pin to control the effective configuration impedance provided by the impedance network to the configuration pin so as to adjust the configuration current on the configuration pin. Different charging currents can be configured in the charging process, so that the charging efficiency is improved, and the risk of overheating caused by charging is reduced.
Description
Technical Field
The utility model relates to an atomizing technical field especially relates to a charge control circuit and battery pole.
Background
With the development of the electronic atomization industry, consumers are more and more willing to use the electronic atomization device. For example: consumers use electronic cigarettes instead of traditional cigarettes. The electronic atomization device comprises a battery and an atomizer, wherein the atomizer atomizes tobacco tar to generate smoke for a user to suck through power supplied by the battery. The rechargeable electronic atomization device reduces the use cost of consumers due to the characteristic of recycling, and is favored by consumers.
In the conventional charging technology, when the battery voltage is lower than a first threshold, constant current charging is started, and when the battery voltage reaches the first threshold, constant voltage charging is started until the battery voltage reaches a full-charge voltage. This type of charging is time consuming and the user experience is not very good. The prior art also has a scheme of maximum current-limiting charging, but the charging mode is easy to cause overheating of products and cause danger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a charge control circuit and battery pole, it can dispose different charging current in charging process, both improves charge efficiency, also reduces because of the overheated risk of charging.
For solving the above technical problem, the utility model provides a first technical scheme does: provided is a charge control circuit including: the charging chip comprises a configuration pin, wherein the charging chip configures a charging current according to the configuration current on the configuration pin so as to charge the charging element; the impedance network is connected with the configuration pins; and the control chip comprises a control pin, wherein the control pin is connected with the impedance network, and the control chip outputs a control signal through the control pin to control the effective configuration impedance provided by the impedance network to the configuration pin so as to adjust the configuration current on the configuration pin. Different charging currents are configured in the charging process, so that the charging efficiency can be improved, and the risk of overheating caused by charging can be reduced.
The charging chip further comprises a charging pin, wherein the charging pin is connected with the charging element, and the charging current is output through the charging pin so as to charge the charging element.
The impedance network comprises a plurality of impedance branches, and the control signal controls at least one impedance branch to work so as to control the effective configuration impedance provided by the impedance network to the configuration pin.
The impedance network comprises a plurality of impedance elements which are connected in series and connected between the configuration pin and the ground voltage; wherein a node between any two adjacent impedance elements is connected to a ground voltage through a switching element to constitute a plurality of impedance branches.
The control pin comprises a plurality of control sub-pins, and each control sub-pin is connected to a corresponding switch element to determine whether the corresponding impedance branch works or not.
The impedance network comprises a plurality of impedance elements which are connected in series and connected between the configuration pin and the ground voltage; the control pin comprises a plurality of control sub-pins, and a node between any two adjacent impedance elements is connected to a corresponding control sub-pin to form a plurality of impedance branches, wherein the control chip determines whether the corresponding impedance branch works or not through a control signal output to the control sub-pin.
Wherein the impedance values of the plurality of impedance elements are at least partially different.
Wherein the impedance network comprises: the impedance element and the switch element are connected between the configuration pin and the ground voltage in series, and the control end of the switch element is connected with the control pin to receive the control signal; the control chip adjusts the effective configuration impedance provided by the impedance network to the configuration pin by adjusting the duty ratio of the control signal. Different charging currents are configured in the charging process, so that the charging efficiency can be improved, and the risk of overheating caused by charging can be reduced.
The control pin is connected with the control end of the switch element through the oscillating circuit so as to provide a control signal to the switch element.
In order to solve the above technical problem, the utility model provides a second technical scheme does: there is provided a battery pole comprising a charge control circuit as defined in any one of the preceding claims.
The utility model has the advantages that: be different from prior art, the utility model provides a charge control circuit includes: the charging device comprises a charging chip, an impedance network and a control chip, wherein the impedance network is connected with a configuration pin of the charging chip, and the charging chip configures charging current according to the configuration current on the configuration pin so as to charge a charging element; the control pin is connected with the impedance network, and the control chip outputs a control signal through the control pin to control the impedance network to provide effective configuration impedance for the configuration pin, so that the configuration current on the configuration pin is adjusted. Therefore, different charging currents can be configured in the charging process, so that the charging efficiency is improved, and the risk of overheating caused by charging is reduced.
Drawings
Fig. 1 is a schematic diagram of functional modules of the charging control circuit of the present invention;
fig. 2 is a schematic structural diagram of a first embodiment of the charging control circuit of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the charging control circuit of the present invention;
fig. 4 is a schematic structural diagram of a third embodiment of the charging control circuit of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of the battery rod of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Please refer to fig. 1, which is a schematic diagram of functional modules of the charging control circuit according to the present invention. Specifically, the charging control circuit includes a charging chip 11, an impedance network 12, a control chip 13, and a charging element 14.
The charging chip 11 includes a configuration pin n1, and the charging chip 11 configures a charging current according to the configuration current on the configuration pin n1 to charge the charging element 14 with the charging current. The impedance network 12 is connected to the configuration pin n 1; the control chip 13 includes a control pin n2, the control pin n2 is connected to the impedance network 12, and the control chip 13 outputs a control signal through the control pin n2 to control the effective configuration impedance provided by the impedance network 12 to the configuration pin n1, thereby regulating the configuration current on the configuration pin n 1.
In one embodiment, the charging chip 11 further includes a charging pin n3, the charging pin n3 is connected to the charging device 14, and a charging current is output through the charging pin n3 to charge the charging device 14.
Specifically, the charging element 14 may be a battery, such as a lithium battery, and the like, and the control chip 13 may be a micro control unit MCU and the like.
In one embodiment, the impedance network 12 includes a plurality of impedance branches, and the control signal controls at least one impedance branch to operate to control the effective configuration impedance provided by the impedance network 12 to the configuration pin n 1. For example, referring to fig. 2, the impedance network 12 includes a plurality of impedance elements connected in series and connected between the configuration pin n1 and the ground voltage GND. Wherein a node between any two adjacent impedance elements is connected to the ground voltage GND through a switching element to constitute a plurality of impedance branches.
Specifically, as shown in fig. 2, the impedance element specifically includes: resistor R1, resistor R2, and resistor R3. The resistor R1, the resistor R2, and the resistor R3 are connected in series between the configuration pin n1 and the ground voltage GND. The resistor R1 forms an impedance branch, the resistor R1 and the resistor R2 form an impedance branch, and the resistor R1, the resistor R2 and the resistor R3 form an impedance branch.
As shown in fig. 2, the control pin n2 includes a plurality of control sub-pins, such as control sub-pins n21, n 22. Each control sub-pin is connected to a corresponding switch element to determine whether the corresponding impedance branch is working. For example, the control sub-pin n21 is connected to the switching element Q1 for determining whether the impedance branch formed by the resistor R1 is working; the control sub-pin n22 is connected to the switching element Q2 for determining whether the impedance branch formed by the resistor R1 and the resistor R2 is working; the control sub-pin n21 and the control sub-pin n22 together determine whether the impedance branch formed by the resistor R1, the resistor R2 and the resistor R3 is working.
Specifically, in the embodiment shown in fig. 2, if the amount of power in the charging element 14 is low, a larger charging current needs to be configured to charge the charging element 14, that is, the effective configuration resistance provided by the impedance network 12 to the configuration pin n1 is a small resistance. Specifically, the control sub-pin n21 of the control chip 13 outputs a first level signal, the control switch Q1 is turned on, the control sub-pin n22 of the control chip 13 outputs a second level signal, the control switch Q2 is turned off, and the resistor R2 and the resistor R3 are short-circuited, at this time, the effective configuration resistor provided to the configuration pin n1 by the impedance network 12 is the impedance value of the resistor R1, that is, R ═ R1, and the charging current for charging the charging element 14 by the charging pin n3 of the charging chip 11 is I ═ 1/R1.
After the charging element 14 is charged for a certain time by the charging current corresponding to the effective configuration resistance R — R1, the charging current may be adjusted, and the charging element 14 is charged by the adjusted charging current, that is, the effective configuration resistance provided to the configuration pin n1 by the impedance network 12 is a large resistance. Specifically, the control sub-pin n21 of the control chip 13 outputs the second level signal, the control switch Q1 is turned off, the control sub-pin n22 of the control chip 13 outputs the first level signal, the control switch Q2 is turned on, and the resistor R3 is short-circuited, at this time, the effective configuration resistor provided by the impedance network 12 to the configuration pin n1 is the impedance value of the resistor R1 and the resistor R2, that is, R1+ R2, and the charging current charged by the charging element 14 through the charging pin n3 of the charging chip 11 is I1/(R1 + R2).
Specifically, in this embodiment, a temperature sensor or the like may be disposed in the control chip 13, the temperature sensor is used to detect the system temperature, when the temperature reaches a certain temperature value, the control sub-pin n21 of the control chip 13 may output the second level signal, the control switch Q1 is turned off, the control sub-pin n22 outputs the first level signal, the control switch Q2 is turned on, and the resistor R3 is short-circuited, at this time, the effective configuration resistor provided to the configuration pin n1 by the impedance network 12 is the impedance value of the resistor R1 and the resistor R2, that is, R1+ R2, and the charging current charged by the charging pin n3 of the charging chip 11 to the charging element 14 is I1/(R1 + R2).
After the charging element 14 is charged for a certain time by the charging current corresponding to the effective configuration resistor R1+ R2, the charging current may be adjusted, and the charging element 14 is charged by the adjusted charging current, that is, the effective configuration resistor provided to the configuration pin n1 by the impedance network 12 is a large resistor. Specifically, the control sub-pin n21 of the control chip 13 outputs the second level signal, the control switch Q1 is turned off, the control sub-pin n22 of the control chip 13 outputs the second level signal, and the control switch Q2 is turned off, at this time, the effective configuration resistors provided to the configuration pin n1 by the impedance network 12 are the resistance values of the resistor R1, the resistor R2, and the resistor R3, that is, R ═ R1+ R2+ R3, and the charging current for the charging element 14 by the charging pin n3 of the charging chip 11 is I ═ 1/(R1+ R2+ R3).
Specifically, in this embodiment, a temperature sensor or the like may be disposed in the control chip 13, the temperature sensor is used to detect the system temperature, and when the temperature exceeds a certain temperature value, the control sub-pin n21 of the control chip 13 may output the second level signal, the control switch Q1 may be turned off, the control sub-pin n22 may output the first level signal, the control switch Q2 may be turned on, and the resistor R3 may be short-circuited, at this time, the effective configuration resistor provided to the configuration pin n1 by the impedance network 12 is the resistance value of the resistor R1 and the resistor R2, that is, R1+ R2+ R3, and the charging current provided to the charging element 14 by the charging pin 3 of the charging chip 11 is I1/(R1 + R2+ R3).
In one embodiment, the first level signal is a high level signal and the second level signal is a low level signal. In one embodiment, the switches Q1 and Q2 may be N-type MOS switches.
The charging circuit shown in this embodiment can configure different charging currents during the charging process, thereby improving the charging efficiency and reducing the risk of overheating due to charging.
As shown in fig. 2, the impedance network 12 further includes a resistor R4 and a resistor R5. Specifically, a first end of the resistor R1 is connected to the configuration pin n1, a first end of the resistor R2 is connected to a second end of the resistor R1, a first end of the resistor R3 is connected to a second end of the resistor R2, and a second end of the resistor R3 is connected to the ground voltage GND; a first path end of the switch Q1 is connected with a second end of the resistor R1 and a first end of the resistor R2, and a second path end of the switch Q1 is connected with a ground voltage GND; a first path end of the switch Q2 is connected with a second end of the resistor R2 and a first end of the resistor R3, and a second path end of the switch Q2 is connected with a ground voltage GND; the first end of the resistor R4 is connected with the control end of the switch Q1, and the second end of the resistor R4 is connected with the control sub-pin n 21; the first end of the resistor R5 is connected with the control end of the switch Q2, and the second end of the resistor R4 is connected with the control sub-pin n 22.
The charging control circuit shown in this embodiment can configure different effective configuration impedances for the charging chip 11 through the impedance network 12, so that the charging chip 11 provides different charging currents for the charging element 14, and the charging current can be dynamically switched according to the electric quantity in the charging element or the use requirement in the charging process. Not only improves the charging efficiency, but also reduces the risk of overheating due to charging.
In another embodiment, as shown in fig. 3, the impedance network 12 includes a plurality of impedance elements connected in series and connected between the configuration pin n1 and the ground voltage GND. For example, the impedance element includes a resistor R1, a resistor R2, and a resistor R3, wherein the resistor R1, the resistor R2, and the resistor R3 are connected in series between the configuration pin n1 and the ground voltage GND.
The control pin n2 includes a plurality of control sub-pins, such as control sub-pins n21, n 22; the node between any two adjacent impedance elements is connected to a corresponding control sub-pin n21, n22 to form a plurality of impedance branches, and the control chip 13 determines whether the corresponding impedance branch operates according to the control signal output to the control sub-pin n21, n 22. Specifically, as shown in fig. 2, the resistor R1 forms a resistance branch, and the resistor R1 and the resistor R2 form a resistance branch.
Specifically, a first end of the resistor R1 is connected to the configuration pin n1, a first end of the resistor R2 is connected to a second end of the resistor R1, a first end of the resistor R3 is connected to a second end of the resistor R2, and a second end of the resistor R3 is connected to the ground voltage GND; the control sub pin n21 is connected with the second end of the resistor R1 and the first end of the resistor R2; the control sub-pin n22 is connected to the second terminal of the resistor R2 and the first terminal of the resistor R3.
In this embodiment, if the power of the charging element 14 is low, the control chip 13 pulls the signal of the control sub-pin n21 low, and at this time, the effective configuration impedance provided by the impedance network 12 to the configuration pin n1 is the impedance value of the resistor R1, that is, R is R1, and the charging current provided by the charging pin n3 of the charging chip 11 to the charging element 14 is I is 1/R1.
After a certain time, the temperature of the system will increase because the charging current of the charging element 14 is larger, and at this time, the control chip 13 pulls the signal of the control sub-pin n22 low, and at this time, the effective configuration impedance provided by the impedance network 12 to the configuration pin n1 is the impedance value of the resistor R1 and the resistor R2, that is, R1+ R2, and the charging current provided by the charging pin n3 of the charging chip 11 to charge the charging element 14 is I1/(R1 + R2).
Specifically, in this embodiment, a temperature sensor or the like may be disposed in the control chip 13, and when the temperature reaches a certain temperature value, the signal of the control sub-pin n22 may be pulled down, so that the effective configuration impedance provided by the impedance network 12 to the configuration pin n1 is the impedance value of the resistor R1 and the resistor R2, that is, R1+ R2, and the charging current for charging the charging element 14 through the charging pin n3 of the charging chip 11 is I1/(R1 + R2).
In an alternative embodiment, the control chip 13 may be configured with other detection devices, and the control chip 13 may control the charging process to be turned off when an unsafe temperature or other dangerous conditions are detected.
In an embodiment, the impedance values of the plurality of impedance elements are at least partially different. Specifically, for example, the resistance values of the resistor R1, the resistor R2, and the resistor R3 may be different.
The charging control circuit shown in this embodiment may configure different effective configuration impedances for the charging chip 11 through the impedance network 12, so that the charging chip 11 provides different charging currents for the charging element 14, and the charging current can be dynamically switched according to the electric quantity in the charging element or the use requirement in the charging process; in addition, compared with the first embodiment shown in fig. 2, the switch Q1, the switch Q2, the resistor R4 and the resistor R5 are omitted, and the material cost is reduced. In particular, compared to the embodiment shown in fig. 2, the present embodiment omits a switch and a part of the resistor, which can improve the charging efficiency, reduce the risk of overheating due to charging, and reduce the cost.
In another embodiment, as shown in fig. 4, the impedance network 12 includes: the impedance element and the switch element are connected in series between the configuration pin n1 and the ground voltage GND, and the control terminal of the switch element is connected to the control pin n2 to receive the control signal. The control pin n2 is connected to the control terminal of the switching element through an oscillation circuit to provide a control signal to the switching element.
Specifically, the impedance element includes a resistor R1 and the switching element includes a switch Q3.
In one embodiment, the oscillator circuit includes a resistor R2 and a capacitor C1. The control pin n2 is connected to the control terminal of the switching element through a resistor R2. Specifically, a first end of the resistor R1 is connected to the configuration pin n1, a first path end of the switch Q3 is connected to a second end of the resistor R1, a second path end of the switch Q3 is connected to the ground voltage GND, and a control end of the switch Q3 is connected to a first end of the resistor R2; the second end of the resistor R2 is connected to the control pin n2, the first end of the capacitor C1 is connected to the control end of the switch Q3 and the first end of the resistor R2, and the second end of the capacitor C1 is connected to the ground voltage GND.
In this embodiment, the control signal output from the control pin n2 is a pulse width modulation signal, and the control chip 13 adjusts the effective configuration impedance provided by the impedance network 12 to the configuration pin n1 by adjusting the duty ratio of the control signal.
Specifically, the switch Q3 is a transistor, which has very small resistance when operating in the amplification region and infinite resistance when operating in the cutoff region. The control signal output by the control pin n2 can therefore control the switch Q3 to switch between the amplification and cut-off regions to change the effective configuration resistance provided to the configuration pin n 1. Specifically, in the present embodiment, the effective configuration resistor R provided to the configuration pin n1 is R1+ Q3, wherein the resistance of Q3 may vary according to the duty cycle of the control signal. It can be understood that, if a large current is required for charging, the duty ratio of the control signal can be used to control the switch Q3 to operate in the amplification region, so that the Q3 exhibits a small resistance; if a small current charge is required, the switch Q3 can be controlled to operate in the off region by the duty cycle of the control signal, so that the Q3 exhibits a large resistance.
The charging control circuit shown in this embodiment can configure different effective configuration impedances for the charging chip 11 through the impedance network 12, so that the charging chip 11 provides different charging currents for the charging element 14, and the charging current can be dynamically switched according to the electric quantity or the use requirement in the charging element in the charging process. Specifically, compared with the embodiment shown in fig. 2, the embodiment omits a switch and a part of resistors, which can not only improve the charging efficiency, but also reduce the risk of overheating due to charging, and further reduce the cost by controlling the magnitude of the charging current to be continuously adjustable through the pulse width modulation signal.
Fig. 5 is a schematic structural diagram of a battery rod according to an embodiment of the present invention. Specifically, the battery post 41 includes a charging control circuit 42, and the charging control circuit 42 may be the charging control circuit of any of the embodiments of fig. 1 to 4. In particular, the battery rod 41 is used to power an atomizer inserted therein to atomize an atomized substrate in the atomizer.
The utility model provides a battery pole, it is when charging, can be through impedance network 12 for the different effective configuration impedance of charging chip 11 configuration, and then make charging chip 11 provide different charging current for charging element 14, and it can be in the charging process, according to the electric quantity in the original paper that charges or user demand dynamic switching charging current. In addition, as shown in the second embodiment shown in fig. 3, the switch Q1, the switch Q2, the resistor R4 and the resistor R5 are omitted, so that the material cost is reduced.
The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A charge control circuit, comprising:
the charging chip comprises a configuration pin, wherein the charging chip configures a charging current according to the configuration current on the configuration pin so as to charge a charging element;
the impedance network is connected with the configuration pin;
and the control chip comprises a control pin, wherein the control pin is connected with the impedance network, and the control chip outputs a control signal through the control pin to control the effective configuration impedance provided by the impedance network to the configuration pin so as to adjust the configuration current on the configuration pin.
2. The charge control circuit of claim 1, wherein the charging chip further comprises a charging pin, wherein the charging pin is connected to the charging element, and wherein the charging current is output through the charging pin to charge the charging element.
3. The charge control circuit of claim 1 wherein the impedance network comprises a plurality of impedance branches, the control signal controlling at least one of the impedance branches to operate to control an effective configuration impedance provided by the impedance network to the configuration pin.
4. The charge control circuit of claim 3, wherein the impedance network comprises a plurality of impedance elements connected together in series and connected between the configuration pin and a ground voltage;
wherein a node between any two adjacent impedance elements is connected to the ground voltage through a switching element to constitute the plurality of impedance branches.
5. The charge control circuit of claim 4, wherein the control pin comprises a plurality of control sub-pins, each of the control sub-pins is connected to a corresponding one of the switching elements to determine whether the corresponding impedance branch is operating.
6. The charge control circuit of claim 3, wherein the impedance network comprises a plurality of impedance elements connected together in series and connected between the configuration pin and a ground voltage;
the control pin comprises a plurality of control sub-pins, a node between any two adjacent impedance elements is connected to the corresponding control sub-pin to form a plurality of impedance branches, and the control chip determines whether the corresponding impedance branch works or not through a control signal output to the control sub-pin.
7. The charge control circuit according to any one of claims 4 to 6, wherein the impedance values of the plurality of impedance elements are at least partially different.
8. The charge control circuit of claim 1, wherein the impedance network comprises: the impedance element and the switch element are connected between the configuration pin and a ground voltage in series, and the control end of the switch element is connected with the control pin to receive the control signal;
the control signal is a pulse width modulation signal, and the control chip adjusts the effective configuration impedance provided by the impedance network to the configuration pin by adjusting the duty ratio of the control signal.
9. The charge control circuit of claim 8, wherein the control pin is connected to the control terminal of the switching element through an oscillating circuit to provide a control signal to the switching element.
10. A battery pole, characterized in that the battery pole comprises the charge control circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022053155.5U CN213547131U (en) | 2020-09-17 | 2020-09-17 | Charging control circuit and battery pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022053155.5U CN213547131U (en) | 2020-09-17 | 2020-09-17 | Charging control circuit and battery pole |
Publications (1)
| Publication Number | Publication Date |
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| CN213547131U true CN213547131U (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022053155.5U Active CN213547131U (en) | 2020-09-17 | 2020-09-17 | Charging control circuit and battery pole |
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| CN (1) | CN213547131U (en) |
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