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Emergency power protection method and device
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A technology of emergency power supply and protection device, applied in circuit devices, battery circuit devices, transportation and packaging, etc., can solve problems such as reducing the utilization rate of emergency power supply
Active Publication Date: 2019-08-16
SHENZHEN LEDFRIEND OPTOELECTRONICS
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Abstract
Description
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Problems solved by technology
However, when the battery voltage is lower than the usable voltage value of the battery, the battery may be in an undervoltage state, but the battery is not damaged. Therefore, it is concluded that the battery is damaged, which will greatly reduce the utilization rate of the emergency power supply.
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Embodiment 1
[0047] figure 1 It is a flowchart of an emergency power supply protection method provided in Embodiment 1 of the present invention, and the method includes the following steps:
[0048] Step S11: Connect the charging circuit of the emergency power supply, and charge the emergency power supply for a first preset duration.
[0049] In the embodiment of the present invention, the emergency power supply in the emergency equipment may enter the state of undervoltage or damage after multiple discharges due to too many times of operation, and the voltage of the battery may be lower during the subsequent charging process. will rise, wherein the emergency power source includes a rechargeable battery. Therefore, after the emergency equipment is connected to the charging power supply and the emergency power supply is activated, before the emergency power supply is normalized, the charging circuit of the emergency power supply can be connected to charge the emergency power supply for the...
Embodiment 2
[0064] figure 2 It is a flow chart of an emergency power supply protection method provided by Embodiment 2 of the present invention, and the method includes the following steps:
[0065] Step S21: Connecting the charging circuit of the emergency power supply, and charging the emergency power supply for a first preset duration.
[0066] This step is consistent with the above step S11, and will not be repeated here.
[0067] Step S22: detecting the voltage of the emergency power supply, and judging whether the voltage of the emergency power supply is lower than a first preset low-voltage cut-off point.
[0068] This step is consistent with the above step S12, and will not be repeated here.
[0069] Step S23: When the voltage of the emergency power supply is lower than the first preset low-voltage cut-off point, disconnect the charging circuit of the emergency power supply.
[0070] This step is consistent with the above step S13, and will not be repeated here.
[0071] Step...
Embodiment 3
[0080] image 3 It is a flow chart of an emergency power supply protection method provided by Embodiment 3 of the present invention, and the method includes the following steps:
[0081] Step S301: Connect the charging circuit of the emergency power supply, and charge the emergency power supply for a first preset duration.
[0082] This step is consistent with the above step S11, and will not be repeated here.
[0083] Step S302: Detect the voltage of the emergency power supply, and determine whether the voltage of the emergency power supply is lower than a first preset low-voltage cut-off point.
[0084] This step is consistent with the above step S12, and will not be repeated here.
[0085] Step S303: When the voltage of the emergency power supply is lower than the first preset low-voltage cut-off point, disconnect the charging circuit of the emergency power supply.
[0086] This step is consistent with the above step S13, and will not be repeated here.
[0087] Step S30...
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Abstract
The invention provides an emergency power protection method and device. The emergency power protection method comprises a step of connecting a charging circuit of an emergency power supply and charging the emergency power supply for a first preset duration, a step of detecting the voltage of the emergency power supply and determining whether the voltage of the emergency power supply is smaller than a first preset low-voltagecut-off point or not, a step of disconnecting the charging circuit of the emergency power supply when the voltage of the emergency power supply is smaller than the first preset low-voltage cut-off point, a step of judging whether the charging frequency of the emergency power supply reaches a first preset number of times or whether a total charging time reaches a thirdpreset duration, a step of repeating the above steps after a second preset duration when the charging frequency does not reach the first preset number of times or the total charging time does not reach the third preset duration, and a step of determining the damage to the emergency power supply and disconnecting the charging circuit when the charging frequency is larger than the preset number of times. According to the method and the device, an under-voltage emergency power supply can be restored to a normal state, a condition that the under-voltage emergency power supply is mistakenly judgedto be a damaged battery is reduced, and the utilization rate of the emergency power supply is improved.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to an emergency power supply protection method and device. Background technique [0002] Existing emergency equipment is generally equipped with an emergency power supply, and the emergency power supply is prone to problems. The emergency equipment will be equipped with battery protection measures to avoid battery accidents caused by improper operation. [0003] The existing battery protection measures include battery damage protection, that is, the voltage of the battery is detected when the emergency equipment is connected to the battery, and if the detected voltage is lower than the usable voltage value of the battery, it will be permanently disconnected. However, when the battery voltage is lower than the usable voltage value of the battery, the battery may be in an undervoltage state and the battery is not damaged, so it is concluded that the battery is damaged and the utiliz...
Claims
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Application Information
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