Current parameter acquisition method suitable for energy storage battery pack
A technology of current parameters and collection methods, applied in battery circuit devices, different battery charging, measuring electricity and other directions, can solve the problem of inability to accurately measure the trickle charging current of battery packs, and achieve the effect of accurate measurement
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specific Embodiment approach 1
[0032] Specific implementation mode one: the following combination Figure 1-Figure 3 Describe this embodiment, a current parameter acquisition method suitable for energy storage battery packs described in this embodiment, it includes:
[0033] During installation and commissioning, the energy storage element in the discharge excitation unit stores energy;
[0034] The main control unit controls the electronic switch of the discharge excitation unit to open, the energy storage element of the discharge excitation unit discharges, and the current generates a voltage drop on the connecting bar; at the same time, the main control unit collects and obtains the current value of the discharge;
[0035] The main control unit controls the connection bar voltage measurement circuit to collect the voltage drop at both ends of the connection bar, and outputs the obtained discharge voltage drop information to the main control unit;
[0036] The main control unit calculates and obtains the...
specific Embodiment approach 2
[0045] Specific implementation mode two: the following combination figure 1 Describe this embodiment, this embodiment will further explain Embodiment 1, the discharge excitation unit uses the electrolytic capacitor C2 as the energy storage unit to store the energy required for discharge;
[0046] The fuse FU1 is used as the insurance of the discharge circuit;
[0047] The electronic switch HSM3107 is used to control the on-off of the discharge circuit;
[0048] Resistor R10 is used as the current limiting resistor to ensure that the maximum current during the discharge process does not exceed the safety limit;
[0049] The resistance RS1 is used as the collection resistance of the discharge current, which is collected through a differential method.
[0050] Further, the discharge excitation unit discharges the battery connection bar in the following manner: direct current discharge.
[0051] In this embodiment, if figure 2 As shown, the discharge excitation unit includes ...
specific Embodiment approach 3
[0059] Specific implementation mode three: the following combination figure 2 This implementation mode is described. This implementation mode further describes the first implementation mode. The connection bar voltage measurement circuit uses a programmable gain instrumentation amplifier AD8231 to realize accurate measurement of small currents.
[0060] 4. In this embodiment, the connection bar voltage measurement circuit includes a programmable gain instrumentation amplifier AD8231, resistors R11, R13, R14, R16, R20, R22, R21, R24, capacitors C6, C7, C8, C9, C11, C19, CON4 pin J2, CON4 pin J3 and bent pin socket J4;
[0061] The No. 2 pin of the programmable gain instrumentation amplifier AD8231 is connected to one end of the resistor R21, at the same time connected to one end of the capacitor C9, and connected to one end of the capacitor C7 at the same time, the other end of the capacitor C9 is connected to the digital ground DGND, and the other end of the resistor R21 is c...
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