A load access identification method, charging control method and device
An identification method and a load-side technology, applied in circuit devices, load supply circuits, battery circuit devices, etc., can solve problems such as the inability to guarantee the safety of the charging environment, the hidden danger of the charging data cable of electronic equipment, and the damage of the charging head and the data cable.
Active Publication Date: 2021-08-31
ZHEJIANG GEOFORCECHIP TECH CO LTD
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Problems solved by technology
[0004] However, the safety certification IC can only ensure the originality of the data line, but cannot guarantee the safety of the charging environment. There are certain potential safety hazards, especially the user’s charging habit is that the charging head and the charging data cable are always connected to the wiring board. When the user wets his hands or knocks over the water glass on the table, it may cause the entire charging head and data to be damaged. line destroyed
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[0040] The main concept of the present invention is to judge whether there is a load connected to the load terminal based on the capacitive load access identification device integrated in the data line, charger or mobile power supply when using a data line to charge a terminal such as a mobile phone. , to decide whether to apply charging voltage or charging current to the load terminal, and the identification process for the connected load can be realized based on software calculation and hardware circuit, or it can be realized by pure hardware circuit.
[0041] Such as figure 1 As shown, the load access identification method of the present invention includes a detection step S11, an acquisition step S12 and a judgment step S13, as shown in figure 2 As shown, the charging control method constructed based on the load access identification method includes a detection step S21, an acquisition step S22, a judgment step S23 and a charging start step S24.
[0042] Such as image ...
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The invention relates to a load access identification method, a charging control method and a device, and belongs to the technical field of charging detection. The load access identification method includes: (1) intermittently applying a constant current detection current to the load terminal with the detection reference capacitor connected in parallel, and discharging the detection reference capacitor charged by the detection current; (2) obtaining the load terminal voltage Change characterization index in the process of applying the detection current; (3) If the difference between the voltage change characterization index and the reference index in the current detection current application period satisfies the preset reference, then there is a load connected at the load end. Based on the added detection reference capacitance, it is possible to identify whether there is a load connected to the load terminal by comparing the changes in the characterization indicators of the voltage boost process on the load terminal before and after the capacitive load is connected, so as to ensure the safety of charging equipment, etc. It is safe and can be widely used in devices such as charging.
Description
technical field [0001] The present invention relates to the technical field of charging, in particular to a charging control method, a charging control device, a charging device, a load access identification method, and a load access identification device. Background technique [0002] With the advancement and development of science and technology, the types of electronic products that use rechargeable batteries for offline office work are gradually increasing, and their functions are also gradually increasing, such as mobile phones, PADs, notebook computers, cameras, wireless earphones and other electronic devices; however, with mobile phones As the functions on the smart terminal gradually increase, the power consumption rate of the battery also gradually increases. In order to solve the problem of excessive power consumption of electronic equipment, generally by increasing the battery capacity, reducing the power consumption of the equipment, and speeding up the battery c...
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IPC IPC(8): H02J7/00
CPCH02J7/0036H02J7/00034H02J7/0029H02J7/00304H02J7/0063
Inventor 陈阳光
Owner ZHEJIANG GEOFORCECHIP TECH CO LTD