Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed in the present application are a battery system, a driving system and an energy storage container. The battery system comprises: a plurality of battery packs, which are connected in series, wherein each battery pack corresponds to a first switch, which is connected thereto in series, and each battery pack corresponds to a second switch, which is connected thereto in parallel; each battery pack is connected to the second switch in parallel after being connected to the corresponding first switch in series; the first switch comprises a plurality of controllable switch tubes, which are connected in parallel, and the second switch comprises a plurality of controllable switch tubes, which are connected in parallel; and the plurality of controllable switch tubes comprised in the first switch correspond to at least two different switch-on moments, and the plurality of controllable switch tubes comprised in the second switch correspond to at least two different switch-on moments. The current is relatively large after the first switch is switched on, some of the controllable switch tubes of the second switch that are switched on first automatically explode because the current is too large, the second switch is not successfully switched on, and thus a positive electrode and a negative electrode of the battery pack are not short-circuited. Therefore, the battery pack does not short-circuit after a long time, thereby ensuring the safety of the battery pack.
A: A direct-current power supply parallel-machine input reverse connection prevention circuit and a server. The circuit comprises a first switch tube (Q1) and a second switch tube (Q2); a first end of the first switch tube (Q1) is used for being connected to a positive end of a first power supply (Power1), and a second end of the first switch tube (Q1) is connected to a positive input end of a first driving module (100); a first end of the second switch tube (Q2) is used for being connected to a positive end of a second power supply (Power2), and a second end of the second switch tube (Q2) is connected to a positive input end of a second driving module (200). When the second power supply (Power2) is connected reversely, the first switch tube (Q1) is closed, the second switch tube (Q2) is opened, thus preventing a current from flowing from the positive end of the first power supply (Power1) to a negative end of the second power supply (Power2); when the first power supply (Power1) is connected reversely, the first switch tube (Q1) is opened, the second switch tube (Q2) is closed, thus preventing a current from flowing from the positive end of the second power supply (Power2) to a negative end of the first power supply (Power1). The currents are blocked by means of the first switch tube (Q1) and the second switch tube (Q2), and the problem of internal device damage caused by power supply reverse connection during direct-current power supply parallel-machine input is effectively solved.
B: The present invention is adapted to the technical field of voltage stabilization. Provided are an alternating-current voltage stabilizer (1) and an alternating-current voltage stabilizing device. The alternating-current voltage stabilizer (1) comprises: a tap gating circuit (12) and a multi-tap mutual inductance transformer (11); multiple taps of the multi-tap mutual inductance transformer (11) are provided on a primary winding thereof; a secondary winding of the multi-tap mutual inductance transformer (11) has one end used for connecting to a live wire end of an alternating-current input and the other end used for connecting to a load; the other end of the secondary winding is further connected to a neutral line end of the alternating-current input by means of the tap gating circuit (12). The tap gating circuit (12) comprises multiple controllable switch branches connected in parallel, and the number of the controllable switch branches is consistent with that of the taps of the primary winding; each controllable switch branch comprises two controllable switches connected in series, and each tap of the primary winding is connected between two controllable switches of the corresponding controllable switch branch. The cost of the alternating-current voltage stabilizer (1) can be reduced.
C: An organic light emitting diode (OLED) driving apparatus (300, 800), and a control method and apparatus (1100, 1200) for the OLED driving apparatus (300, 800). The OLED driving apparatus (300, 800) comprises a first switching transistor (M6) and a second switching transistor (M5) connected in series; the first switching transistor (M6), the second switching transistor (M5), and an OLED are connected in series; and during a time period that the first switching transistor (M6) is in conducting state, the second switching transistor (M5) is subjected to a plurality of on-off actions to control the light emitting time of the OLED. When the second switching transistor (M5) is subjected to a plurality of on-off actions, the first switching transistor (M6) is in the conducting state, and the number of on-off times of the first switching transistor (M6) is reduced, thereby reducing the number of times of charging a parasitic capacitor at a control end of the first switching transistor (M6) according to a control signal (EM1) of the first switching transistor (M6), and reducing the loss.
D: A battery system control and charging method, battery system, and electric vehicle, the battery system comprising: at least two battery packs, wherein each of the at least two battery packs is detachably connected to a battery base of an electric vehicle, and each battery pack corresponds to an identification code, and the identification codes of the battery packs belonging to the same battery system match with each other; and a battery management system, used for communicating with the electric vehicle when the battery system is connected to the electric vehicle, wherein the identification codes corresponding to the at least two battery packs are sent to the electric vehicle, such that the electric vehicle may determine whether the at least two battery packs belong to the same battery system. The battery pack in the battery system is detachably connected to the battery base, and a user can remove the battery pack from the electric vehicle, allowing the battery pack to be charged easily.
Answer: D