CN217427732U - Remote control charging control circuit - Google Patents
Remote control charging control circuit Download PDFInfo
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- CN217427732U CN217427732U CN202221156520.8U CN202221156520U CN217427732U CN 217427732 U CN217427732 U CN 217427732U CN 202221156520 U CN202221156520 U CN 202221156520U CN 217427732 U CN217427732 U CN 217427732U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a remote control charging control circuit, which comprises a charging and discharging interface, a charging and discharging switch, a charging and discharging protection chip, a wireless communication module and a charging and discharging control circuit, wherein the charging and discharging circuit is used for controlling the charging and discharging circuit of a lithium battery pack; the wireless communication module is used for being in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal; the charging and discharging control circuit is respectively connected with the wireless communication module and the charging and discharging switch, and the wireless communication module is also used for controlling the charging and discharging circuit of the lithium battery pack through the charging and discharging control circuit according to the wireless control signal. Thus, under the condition of unattended charging, the lithium battery pack is in alternating current connection with the mains supply through the charger for a long time. The charging loop can be closed in a wireless mode, various fault conditions that short circuit and the like can be caused due to various unknown reasons are reduced, and therefore the danger that the lithium battery is on fire is reduced.
Description
Technical Field
The utility model relates to a lithium battery protection technical field especially relates to a remote control charge control circuit.
Background
In recent years, secondary batteries such as lithium (Li) ion batteries have been widely used. After the electric quantity of the lithium battery pack is discharged once, the lithium battery pack can be continuously charged in a charging mode, so that repeated recycling is realized. Because the lithium battery pack is charged by converting the voltage of the alternating current of the commercial power at present. Under the condition of no one's supervision, the lithium battery pack is electrically connected with commercial power alternating current through the charger for a long time. Various fault conditions such as short circuits may occur due to various unknown reasons, thereby increasing the risk of fire in the lithium battery.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the present invention is to provide a remote control charging control circuit.
In order to achieve the above object, according to the utility model discloses a remote control charge control circuit, include:
the charging and discharging interface is used for connecting charging equipment or electric equipment;
the charge and discharge switch is respectively connected with the charge and discharge interface and the lithium battery pack;
the charge and discharge protection chip is connected with the control end of the charge and discharge switch so as to control the charge and discharge circuit of the lithium battery pack through the charge and discharge switch;
the wireless communication module is in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal;
and the charge and discharge control circuit is respectively connected with the wireless communication module and the charge and discharge switch, and the wireless communication module is also used for controlling the charge and discharge circuit of the lithium battery pack through the charge and discharge control circuit according to the wireless control signal.
Further, according to the utility model discloses an embodiment, charge and discharge control circuit includes:
a signal input end of the charging control circuit is connected with a control end of the wireless communication module, and a signal output end of the charging control circuit is connected with a charging control end of the charging and discharging switch;
and a signal input end of the discharge control circuit is connected with the other control end of the wireless communication module, and a signal output end of the discharge control circuit is connected with the discharge control end of the charge and discharge switch.
Further, according to the utility model discloses an embodiment, the charge control circuit includes:
a base electrode of the triode Q1 is connected with a control end of the wireless communication module through a resistor R40, an emitter electrode of the triode Q1 is connected with a reference ground, and a collector electrode of the triode Q1 is connected with a charging control end of the charging and discharging switch.
Further, according to the utility model discloses an embodiment, the charge control circuit still includes:
one end of the capacitor C23 is connected with the base of the triode Q1, and the other end of the capacitor C23 is connected with the reference ground, so as to filter interference signals of the base of the triode Q1.
Further, according to an embodiment of the present invention, the discharge control circuit includes:
a base electrode of the triode Q2 is connected with a control end of the wireless communication module through a resistor R41, an emitter electrode of the triode Q2 is connected with a reference ground, and a collector electrode of the triode Q1 is connected with a discharge control end of the charge and discharge switch.
Further, according to an embodiment of the present invention, the discharge control circuit further includes:
and one end of the capacitor C25 is connected with the base of the triode Q2, and the other end of the capacitor C25 is connected with the reference ground and is used for filtering interference signals of the base of the triode Q2.
Further, according to an embodiment of the present invention, the wireless communication module includes:
a Zigbee wireless communication chip;
a radio frequency filter circuit comprising a capacitance C15, a capacitance C16, an inductance L2, a capacitance C14, a capacitance C13, an inductance L3, and a capacitance C41, one end of the capacitor C15 is connected to the inverted signal input end of the Zigbee wireless communication chip, the other end of the capacitor C15 is connected with one end of the inductor L2, the other end of the inductor L2 is connected with the reference ground, the other end of the inductor L2 is further connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13 and one end of the inductor L3 respectively, the other end of the inductor L3 is connected with one end of the capacitor C41, the other end of the capacitor C41 is connected with the reference ground, the one end of the capacitor C41 is further connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to a positive phase signal input end of the Zigbee wireless communication chip;
and one end of the wireless antenna is connected with the other end of the capacitor C13.
Further, according to an embodiment of the present invention, the wireless antenna is a PCB on-board microwave antenna.
Further, according to the utility model discloses an embodiment, wireless communication module still with charge-discharge control circuit communication connection, with pass through charge-discharge control circuit acquires the charging current and the voltage information of lithium cell group, and will charging current and voltage information send to wireless control terminal.
The embodiment of the utility model provides a remote control charge control circuit, carry out charge-discharge circuit control to the lithium cell group through the charge-discharge switch; the wireless communication module is used for being in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal; the charging and discharging control circuit is respectively connected with the wireless communication module and the charging and discharging switch, and the wireless communication module is further used for controlling the charging and discharging circuit of the lithium battery pack through the charging and discharging control circuit according to the wireless control signal. Thus, under the condition of unattended charging, the lithium battery pack is in alternating current connection with the mains supply through the charger for a long time. The charging loop can be closed in a wireless mode, various fault conditions that short circuit and the like can be caused due to various unknown reasons are reduced, and therefore the danger that the lithium battery is on fire is reduced.
Drawings
Fig. 1 is a block diagram of a remote control charging control circuit provided in an embodiment of the present invention;
fig. 2 is a circuit diagram of a remote control charging control circuit provided by an embodiment of the present invention.
Reference numerals:
the purpose of the present invention is to provide a portable electronic device, which can be easily and conveniently operated.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 and 2, the utility model provides a remote control charging control circuit, include: the charging and discharging protection circuit comprises a charging and discharging interface, a charging and discharging switch, a charging and discharging protection chip, a wireless communication module and a charging and discharging control circuit, wherein the charging and discharging interface is used for connecting charging equipment or electric equipment; and the charging and discharging interface can be connected with a charging device, so that the lithium battery pack is charged through the charging device. Meanwhile, the charging and discharging interface can be connected with electric equipment so as to supply power to the electric equipment.
The charge and discharge switch is respectively connected with the charge and discharge interface and the lithium battery pack; the main charge-discharge switch is arranged on a charge-discharge circuit loop of the lithium battery pack so as to carry out on-off control on the charge and discharge of the lithium battery pack.
The charge and discharge protection chip is connected with the control end of the charge and discharge switch so as to control the charge and discharge circuit of the lithium battery pack through the charge and discharge switch; the charging and discharging protection chip outputs a discharging control signal through the discharging control end (4) and outputs a charging control signal through the charging control end (2). The discharging control signal and the charging control signal are respectively applied to the controlled ends of the charging switch and the discharging switch. Thereby realizing on-control of the charge switch and the discharge switch.
The wireless communication module is used for being in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal; the wireless communication module can be in communication connection with the control terminal. In this way, control information of the user can be received in a wireless manner. For example, the user may input control information via the application software APP when using it. The control information may include timed charge information, charge on or charge off information. The wireless communication module can be a near field communication module, and the near field communication module can be any one of a WIFI module, a Zigbee module or a Bluetooth module. In other embodiments, a long-range wireless module, such as mobile 3G/4G/5G wireless communication, may also be employed.
The charging and discharging control circuit is respectively connected with the wireless communication module and the charging and discharging switch, and the wireless communication module is also used for controlling the charging and discharging circuit of the lithium battery pack through the charging and discharging control circuit according to the wireless control signal. After receiving control information of a user, the wireless communication module can realize charging and discharging control of the lithium battery pack according to the control information. Referring to fig. 2, after the wireless communication module receives the charge cut-off signal, the wireless communication module may output the charge cut-off signal to the charge and discharge control circuit, and the charge and discharge control circuit may perform turn-off control on the charge switching tube. Similarly, after the wireless communication module receives the discharge cut-off signal, the wireless communication module can output the discharge cut-off signal to the charge and discharge control circuit, and the charge and discharge control circuit is used for carrying out turn-off control on the discharge switch tube.
The embodiment of the utility model provides a remote control charge control circuit, carry out charge-discharge circuit control to the lithium cell group through charge-discharge switch; the wireless communication module is used for being in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal; the charging and discharging control circuit is respectively connected with the wireless communication module and the charging and discharging switch, and the wireless communication module is also used for controlling the charging and discharging circuit of the lithium battery pack through the charging and discharging control circuit according to the wireless control signal. Thus, under the condition of unattended charging, the lithium battery pack is in alternating current connection with the mains supply through the charger for a long time. The charging loop can be closed in a wireless mode, various fault conditions that short circuit and the like can be caused due to various unknown reasons are reduced, and therefore the danger that the lithium battery is on fire is reduced.
The charge and discharge control circuit includes: the signal input end of the charging control circuit is connected with one control end of the wireless communication module, and the signal output end of the charging control circuit is connected with the charging control end of the charging and discharging switch; as shown in fig. 2, the charge control circuit includes: a base electrode of the triode Q1 is connected with a control end of the wireless communication module through a resistor R40, an emitter electrode of the triode Q1 is connected with a reference ground, and a collector electrode of the triode Q1 is connected with a charging control end of the charging and discharging switch. When the charging control terminal of the wireless communication module outputs a high level, the transistor Q1 is turned on, so as to output a low level to the charging MOS transistor Q3, and at this time, the charging MOS transistor Q3 is turned off. Under normal conditions, the wireless communication module charging control terminal does not output high level signals. At this time, the charging MOS transistor Q3 is controlled to be turned on or off by a charging/discharging protection chip. Only, when the user needs to turn off the charging MOS transistor Q3 to stop charging, emergency charging shutdown control is implemented through the wireless communication module.
The charge control circuit further includes: and one end of the capacitor C23 is connected with the base of the triode Q1, and the other end of the capacitor C23 is connected with the reference ground and is used for filtering interference signals of the base of the triode Q1. The capacitor C23 can filter out interference signals of the base electrode of the triode Q1, ensure the stability of the signals of the base electrode of the triode Q1 and avoid charging error closing control caused by interference.
And the signal input end of the discharge control circuit is connected with the other control end of the wireless communication module, and the signal output end of the discharge control circuit is connected with the discharge control end of the charge and discharge switch. The discharge control circuit includes: the base electrode of the triode Q2 is connected with one control end of the wireless communication module through a resistor R41, the emitter of the triode Q2 is connected with the reference ground, and the collector of the triode Q1 is connected with the discharge control end of the charge-discharge switch. When the discharge control terminal of the wireless communication module outputs a high level, the transistor Q2 is turned on, so as to output a low level to the discharge MOS transistor Q4, and at this time, the discharge MOS transistor Q4 is turned off. Under normal conditions, the wireless communication module discharge control end does not output high-level signals. At this time, the on/off of the discharge MOS transistor Q4 is controlled by the charge/discharge protection chip. Only, when the user needs to turn off the discharging MOS transistor Q4 to stop discharging, the emergency discharging shutdown control is implemented by the wireless communication module.
The discharge control circuit further includes: and one end of the capacitor C25 is connected with the base of the triode Q2, and the other end of the capacitor C25 is connected with the reference ground and is used for filtering interference signals of the base of the triode Q2. The capacitor C25 can filter out interference signals of the base electrode of the triode Q2, ensure the stability of the signals of the base electrode of the triode Q2 and avoid charging error closing control caused by interference.
The wireless communication module includes: the Zigbee wireless communication chip comprises a Zigbee wireless communication chip, a radio frequency filter circuit and a wireless antenna, wherein the radio frequency filter circuit comprises a capacitor C15, a capacitor C16, an inductor L2, a capacitor C14, a capacitor C13, an inductor L3 and a capacitor C41, one end of the capacitor C15 is connected with the inverted signal input end of the Zigbee wireless communication chip, the other end of the capacitor C15 is connected with one end of the inductor L2, the other end of the inductor L2 is connected with the reference ground, the other end of the inductor L2 is further connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13 and one end of the inductor L3 respectively, the other end of the inductor L3 is connected with one end of the capacitor C41, the other end of the capacitor C41 is connected with the reference ground, the one end of the capacitor C41 is further connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to a positive phase signal input end of the Zigbee wireless communication chip;
one end of the wireless antenna is connected to the other end of the capacitor C13. As shown in fig. 2, the capacitor C15, the capacitor C16, the inductor L2, the capacitor C14, the capacitor C13, the inductor L3, and the capacitor C41 form a band-pass filter circuit, so as to filter out the wireless signal received by the wireless antenna, and output the wireless signal to the wireless communication module. And filtering out interference high-frequency signals and invalid direct-current signals.
The wireless antenna is a PCB onboard microwave antenna. The onboard microwave antenna has the characteristics of small volume and low cost, and has higher integration degree. Can meet the application requirement of small volume of the protection plate. Of course, in other embodiments, off-board microwave antennas may also be employed.
The wireless communication module is also in communication connection with the charging and discharging control circuit so as to acquire charging current and voltage information of the lithium battery pack through the charging and discharging control circuit and send the charging current and voltage information to the wireless control terminal. Therefore, a user can acquire the charging or discharging state of the lithium battery pack through the wireless control terminal. And when the output is abnormal, a charging or discharging cut-off instruction is sent in time through the wireless control terminal. And the lithium battery pack is charged or discharged and is turned off in time. The communication connection may be UART or IIC mode communication.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily 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 more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the invention, and that those skilled in the art may make variations, modifications, substitutions and alterations herein without departing from the spirit and scope of the invention.
Claims (9)
1. A remote control charge control circuit, comprising:
the charging and discharging interface is used for connecting charging equipment or electric equipment;
the charge and discharge switch is respectively connected with the charge and discharge interface and the lithium battery pack;
the charge and discharge protection chip is connected with the control end of the charge and discharge switch so as to control the charge and discharge circuit of the lithium battery pack through the charge and discharge switch;
the wireless communication module is in communication connection with a wireless control terminal so as to receive a wireless control signal of the wireless control terminal;
and the charge and discharge control circuit is respectively connected with the wireless communication module and the charge and discharge switch, and the wireless communication module is also used for controlling the charge and discharge circuit of the lithium battery pack through the charge and discharge control circuit according to the wireless control signal.
2. The remote control charge control circuit of claim 1, wherein the charge and discharge control circuit comprises:
a signal input end of the charging control circuit is connected with a control end of the wireless communication module, and a signal output end of the charging control circuit is connected with a charging control end of the charging and discharging switch;
and a signal input end of the discharge control circuit is connected with the other control end of the wireless communication module, and a signal output end of the discharge control circuit is connected with the discharge control end of the charge and discharge switch.
3. The remote control charge control circuit of claim 2, wherein the charge control circuit comprises:
the base electrode of the triode Q1 is connected with one control end of the wireless communication module through a resistor R40, the emitter of the triode Q1 is connected with the reference ground, and the collector of the triode Q1 is connected with the charging control end of the charging and discharging switch.
4. The remote control charge control circuit of claim 3, further comprising:
one end of the capacitor C23 is connected with the base of the triode Q1, and the other end of the capacitor C23 is connected with the reference ground, so as to filter interference signals of the base of the triode Q1.
5. The remote-controlled charge control circuit according to claim 2, wherein the discharge control circuit comprises:
a base electrode of the triode Q2 is connected with a control end of the wireless communication module through a resistor R41, an emitter electrode of the triode Q2 is connected with a reference ground, and a collector electrode of the triode Q1 is connected with a discharge control end of the charge and discharge switch.
6. The remote-controlled charge control circuit according to claim 5, wherein the discharge control circuit further comprises:
and one end of the capacitor C25 is connected with the base of the triode Q2, and the other end of the capacitor C25 is connected with the reference ground and is used for filtering interference signals of the base of the triode Q2.
7. The remote charging control circuit according to claim 1, wherein the wireless communication module comprises:
a Zigbee wireless communication chip;
a radio frequency filter circuit comprising a capacitance C15, a capacitance C16, an inductance L2, a capacitance C14, a capacitance C13, an inductance L3, and a capacitance C41, one end of the capacitor C15 is connected to the inverted signal input end of the Zigbee wireless communication chip, the other end of the capacitor C15 is connected with one end of the inductor L2, the other end of the inductor L2 is connected with the reference ground, the other end of the inductor L2 is further connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13 and one end of the inductor L3 respectively, the other end of the inductor L3 is connected with one end of the capacitor C41, the other end of the capacitor C41 is connected with the reference ground, the one end of the capacitor C41 is further connected to one end of the capacitor C16, and the other end of the capacitor C16 is connected to a positive phase signal input end of the Zigbee wireless communication chip;
and one end of the wireless antenna is connected with the other end of the capacitor C13.
8. The remote charge control circuit of claim 7, wherein the wireless antenna is a PCB on-board microwave antenna.
9. The remote control charging control circuit according to claim 1, wherein the wireless communication module is further in communication connection with the charging and discharging control circuit, so as to obtain charging current and voltage information of the lithium battery pack through the charging and discharging control circuit and send the charging current and voltage information to the wireless control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221156520.8U CN217427732U (en) | 2022-05-13 | 2022-05-13 | Remote control charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221156520.8U CN217427732U (en) | 2022-05-13 | 2022-05-13 | Remote control charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217427732U true CN217427732U (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221156520.8U Active CN217427732U (en) | 2022-05-13 | 2022-05-13 | Remote control charging control circuit |
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| CN (1) | CN217427732U (en) |
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2022
- 2022-05-13 CN CN202221156520.8U patent/CN217427732U/en active Active
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