A control circuit of a bluetooth device
A technology for controlling circuits and bluetooth devices, applied in the electronic field, can solve problems such as wasting costs and failing to meet the requirements of charging and power supply
Active Publication Date: 2019-09-03
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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Problems solved by technology
[0005] This kind of control circuit in the prior art needs to use a charging IC to charge the lithium battery, but the Bluetooth modules on the market now have the function of charging the lithium battery, so there is a problem of wasting cost
However, if the Bluetooth module is used to charge the lithium battery, the control circuit for the connection relationship between the Bluetooth module and the lithium battery in the prior art cannot meet the requirements of charging and power supply in the on-off state.
Method used
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0036] see figure 2 , is a structural block diagram of a control circuit of a bluetooth device provided by the present invention; an embodiment of the present invention provides a control circuit of a bluetooth device, including an adapter interface 21, a lithium battery 22, a bluetooth module 23 and a switch circuit 24;
[0037] The switch circuit 24 includes a single-pole multi-throw switch SW1, and the single-pole multi-throw switch SW1 includes an input termin...
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The invention discloses a control circuit of Bluetooth equipment. The control circuit comprises an adapter interface, a lithium battery, a Bluetooth module and a switching circuit, wherein the switching circuit comprises a single-pole multi-throw switch; the single-pole multi-throw switch comprises an input end, a first output end and a second output end; the adapter interface is connected with the Bluetooth module; the Bluetooth module has a function of charging the lithium battery; and the switching circuit is used for switching on a connecting line between the Bluetooth module and the lithium battery when an external power supply is connected to the adapter interface so as to enable the Bluetooth module to charge the lithium battery. By adoption of the control circuit of the Bluetooth equipment disclosed by the invention, a charging IC is not required; when the external power supply is connected to the adapter interface, the Bluetooth module charges the lithium battery; and the connecting line between the Bluetooth module and the lithium battery is controlled by the single-pole multi-throw switch, so that the conditions are realized as follows: when there is no external power supply connected to the adapter interface, the Bluetooth module is powered off in a shutdown state, and the lithium battery supplies power for the Bluetooth module in a startup state.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular, to a control circuit of a bluetooth device. Background technique [0002] The control circuit of the bluetooth device in the prior art is such as figure 1 shown. Among them, SW1 is a single-pole three-throw switch. [0003] When the Bluetooth device is not connected to the adapter, the charging IC does not work, and the Bluetooth module is powered by a lithium battery. Specifically: when SW1 is switched to 1, Q1 is off, the Bluetooth module is powered off, and the system is in a shutdown state; when SW1 is switched At 2, Q1 is turned on, the Bluetooth module is powered on, the system is turned on, the Bluetooth module detects that ON / OFF is pulled high, and the boot process is executed; when SW1 switches to 4, the Bluetooth module detects that ON / OFF is pulled low , LIGHT is pulled high, and the corresponding process of LIGHT is executed (for example, start to light up or ma...
Claims
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IPC IPC(8): H02J7/00
Inventor 蒋炎松
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD