Online detection apparatus for storage battery
An online detection apparatus for a storage battery is provided. The battery, serving as standby power, is connected in parallel with a power supply in an electric device circuit. The apparatus includes a control unit, a discharge circuit, and a battery monitoring unit. After detecting a trigger event, the control unit instructs the discharge circuit to boost the battery voltage to match or exceed the power supply, initiating discharge. During this state, the battery monitoring unit evaluates the battery's discharge performance. Both the discharge circuit and monitoring unit are electrically coupled to the control unit.
1 . An online detection apparatus for a storage battery, the storage battery being connected in parallel with a power supply in a working circuit of an electric device and being a standby power supply of the power supply, wherein the apparatus comprises:
a control unit comprising circuitry configured to send boost enable instruction when detecting a detection trigger event of the storage battery;
a discharge circuit connected in series with the storage battery and electrically coupled to the control unit, wherein the discharge circuit is configured to receive the boost enable instruction from the control unit and to control a voltage of the storage battery to be increased to greater than or equal to a voltage of the power supply according to the boost enable instruction to enable the storage battery to enter a discharge state, wherein the discharge unit further comprises:
a positive output terminal connected to a series connection path between a positive electrode of the power supply and the electric device,
a positive input terminal and a negative output terminal connected to a positive electrode of the storage battery,
a negative input terminal connected to a series connection path between a negative electrode of the storage battery and the electric device, and
a first controlled switch component provided between the positive output terminal and the positive input terminal and the negative output terminal, the first controlled switch component being configured to connect the positive output terminal of the discharge circuit to the positive input terminal and the negative output terminal of the discharge circuit according to the boost enable instruction; and
a battery monitoring unit comprising circuitry electrically coupled to the control unit and configured to detect discharge performance of the storage battery when the storage battery enters the discharge state.
2 . The apparatus according to claim 1 , wherein the control unit is further configured to output a discharge cut-off instruction to the discharge circuit when the storage battery meets a discharge cut-off condition; and
the first controlled switch component is further configured to disconnect the positive output terminal of the discharge circuit from the positive input terminal and the negative output terminal of the discharge circuit according to the discharge cut-off instruction.
3 . The apparatus according to claim 2 , wherein after the storage battery enters the discharge state, the control unit is further configured to output the discharge cut-off instruction to the discharge circuit when the voltage of the storage battery is decreased to a voltage threshold or the storage battery consumes a battery charge level of a capacity.
4 . The apparatus according to claim 2 , further comprising a charge circuit connected to the control unit; wherein
the control unit is further configured to output a charge enable instruction to the charge circuit when the storage battery meets the discharge cut-off condition;
the charge circuit is connected in series with the storage battery and configured to control the storage battery to enter a charge state according to the charge enable instruction of the control unit; and
the battery monitoring unit is further configured to detect charge performance of the storage battery when the storage battery enters the discharge state.
5 . The apparatus according to claim 4 , wherein the charge circuit comprises:
a positive input terminal connected to the positive electrode of the power supply;
a positive output terminal connected to the positive electrode of the storage battery;
a negative input terminal and a negative output terminal are connected to the negative electrode of the storage battery and a negative electrode of the power supply; and
a second controlled switch component provided between the positive input terminal and the positive output terminal, the second controlled switch component being configured to connect the positive output terminal of the charge circuit to the positive input terminal of the charge circuit according to the charge enable instruction.
6 . The apparatus according to claim 4 , wherein the control unit is further configured to: output a current-limiting voltage-regulating charge instruction to the charge circuit when the storage battery meets the discharge cut-off condition;
output a constant-voltage equalizing charge instruction to the charge circuit when the voltage of the storage battery reaches an equalizing charge voltage; and
output a float charge instruction to the charge circuit after a preset time length of equalizing charge.
7 . The apparatus according to claim 1 , further comprising a bypass module comprising circuitry electrically connected to the control unit and connected in series between the storage battery and the electric device; wherein
the control unit is further configured to send a power enable instruction to the bypass module when detecting that the power supply is abnormal; and
the bypass module is configured to connect a circuit between the electric device and the storage battery according to the power enable instruction of the control unit, so as to cause the storage battery to supply power to the electric device.
8 . The apparatus according to claim 1 , further comprising an external load circuit electrically connected to the control unit and connected in parallel with the electric device; wherein the control unit is further configured to send a load enable instruction to the external load circuit when a load rate of the electric device is less than a set load rate threshold; and
the external load circuit is configured to increase a load of the storage battery according to the load enable instruction.
9 . The apparatus according to claim 1 , further comprising an interaction unit comprising circuitry connected to the control unit and configured to acquire test parameters of the storage battery and send the test parameters to the control unit, wherein the test parameters comprise at least one of magnitude of a discharge current, a voltage of a battery cell, a charge current-limiting size, an upper limit of boost, a capacity of the battery cell, or a quantity of battery cells comprised in the storage battery; and the control unit is further configured to send a corresponding test control instruction according to the test parameters.