Cell control device, and power system
A battery control and battery technology, applied in electric braking systems, battery/fuel cell control devices, control devices, etc., can solve the problems of dangerous battery current and large calculation errors, and achieve the effect of reliable protection
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no. 1 Embodiment approach
[0045] Next, use Figure 1-7 , the first embodiment of the present invention will be described.
[0046] figure 1 It is a diagram showing the configuration of a battery system using a battery control device according to an embodiment of the present invention. figure 1 The battery system 100 shown is connected to an inverter 110 and a higher-level controller 112 . The load 111 is connected with the inverter 110 together.
[0047] The inverter 110 is a bidirectional inverter that operates under the control of a host controller 112 . Inverter 110 converts DC power supplied from battery system 100 into AC power and outputs it to load 111 . Load 111 is, for example, a three-phase AC motor mounted on a vehicle, and is rotationally driven using AC power supplied from inverter 110 to generate driving force for the vehicle. Also, when regenerative power generation is performed by operating the load 111 as a generator by utilizing the kinetic energy of the vehicle, alternating curr...
no. 2 Embodiment approach
[0107] Next, a second embodiment of the present invention will be described. In this embodiment, the functional configuration of the battery controller 107 for calculating the allowable current that can flow through the battery module 101 for a certain period of time in consideration of the increase in the high load resistance on the one hand will be described differently from that in the first embodiment. Describe the content of the past content.
[0108] Figure 8 It is a functional block diagram of the battery controller 107 related to the calculation processing of the allowable current according to the second embodiment of the present invention. Figure 8 , for the same as already described in the first embodiment Figure 4 The parts common to the functional block diagram are marked with Figure 4 same symbol. The description of the common parts will be omitted below unless otherwise required.
[0109] Such as Figure 8 As shown, the battery controller 107 of this em...
no. 3 Embodiment approach
[0131] Next, a third embodiment of the present invention will be described. In this embodiment, to improve the equivalent Figure 5 The accuracy of the allowable current under the condition of the range 234 will be described by taking a weighted average of the allowable current for performance maintenance and the allowable current for battery protection described in the second embodiment to obtain the allowable current.
[0132] Figure 9 It is a functional block diagram of the battery controller 107 related to the calculation processing of the allowable current according to the third embodiment of the present invention. Figure 9 In the case of Figure 4 , Figure 8 Common parts in the functional block diagrams are marked with the same symbols as those in these diagrams. The description of the common parts will be omitted below unless otherwise required.
[0133] Such as Figure 9 As shown, the battery controller 107 of this embodiment is in addition to the ΔV effective...
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