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US 2024/0258787 A1Published application
Protection circuit, electrical apparatus, control method, device and medium
AssigneeJiangsu Contemporary Amperex Technology Limited
InventorsJinbiao Li, Yu Yan, Zhimin Dan
Life of this patent
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Abstract
A circuit control method is provided, in which a control module receives a target control instruction for pre-charging a target. The control module may be configured to select a main switch unit (Main-SU) and an auxiliary switch unit (Aux-SU) associated with the target, and control the Aux-SU to be in a continuous-on state. The control module may then control a semiconductor switch unit (Semi-SU) to be in an intermittent-on state to allow pre-charging of the target via the Semi-SU and the Aux-SU. After the target is pre-charged, the control module may control the Main-SU to be in an on-state, and control the Aux-SU and then the Semi-SU to be in an off-state.
Claims18
A safety protection circuit, comprising:
- N (N>2) main switch units (Main-SUs) for connecting to N electrical targets, wherein each Main-SU selected from the N Main-SUs is connected to a battery and is associated with one of the N electrical targets;
- a semiconductor switch unit (Semi-SU) connected to the battery;
- N auxiliary switch units (Aux-SUs) having one-to-one associations with the N Main-SUs, wherein for each Aux-SU selected from the N Aux-SUs and associated with a corresponding Main-SU, the Aux-SU is connected to the Semi-SU and the corresponding Main-SU;
- and
- a control module coupled with the Semi-SU and the N Aux-SUs, wherein the control module is configured to
- receive a target control instruction,
- when the target control instruction is to pre-charge a first set of electrical targets among the N electrical targets,
- select a first set of Main-SUs from the N Main-SUs that are associated with the first set of electrical targets, and select a first set of Aux-SUs from the N Aux-SUs that are associated with the first set of Main-SUs,
- control each of the first set of Aux-SUs to be in a continuous-on state,
- control the Semi-SU to be in an intermittent-on state to allow pre-charging of the electrical targets via the Semi-SU and the first set of Aux-SUs,
- after the first set of electrical targets are pre-charged, control the first set of Main-SUs to be in a turn-on state, and
- control the first set of Aux-SUs to be in a turn-off state and then control the Semi-SU to be in a turn off state.
9 more elements
A safety protection circuit, comprising:
- N (N>2) main switch units (Main-SUs) for connecting to N electrical targets, wherein for each Main-SU among the N Main-SUs, a first end of the Main-SU is connected to an electrode of a battery, and a second end of the Main-SU is connected to an associated one of the N electrical targets;
- a semiconductor switch unit (Semi-SU) having its first end connected to the electrode of the battery;
- N auxiliary switch units (Aux-SUs) having one-to-one associations with the N Main-SUs, wherein for each Aux-SU among the N Aux-SUs and associated with a corresponding Main-SU, a first end of the Aux-SU is connected to a second end of the Semi-SU, and a second end of the Aux-SU is connected to the second end of the corresponding Main-SU;
- and
- a control module coupled with the Semi-SU and the N Aux-SUs, wherein the control module is configured to
- receive a target control instruction,
- when the target control instruction is to pre-charge a first electrical target selected from the N electrical targets,
- before turning on a first Main-SU, control a first Aux-SU to be in a continuous-on state, wherein the first Main-SU among the N Main-SUs is associated with the first electrical target and the first Aux-SU among the N Aux-SUs is associated with the first Main-SU,
- control the Semi-SU to be in an intermittent-on state to allow pre-charging of the first electrical target,
- after the first electrical target is pre-charged, control the first Main-SU to be in a turn on state, and
- control the first Aux-SU to be in a turn off state and then control the Semi-SU to be in a turn off state.
8 more elements
A control method, performed by a control module, comprising:
- receiving a target control instruction, when the target control instruction is to pre-charge a first set of electrical targets selected from N (N>2) electrical targets;
- selecting a first set of main switch units (Main-SUs) from N Main-SUs, wherein each of the N Main-SUs is connected to a battery and an associated one of the N electrical targets;
- selecting a first set of auxiliary switch units (Aux-SUs) from N Aux-SUs, wherein each of the N Aux-SUs has one-to-one connection with one of the N Main-SUs;
- before turning on the first set of Main-SUs, controlling the first set of Aux-SUs to be in a continuous-on state;
- controlling a semiconductor switch unit (Semi-SU) to be in an intermittent-on state to allow pre-charging of the first set of electrical targets via the Semi-SU and the first set of Aux-SUs, wherein the Semi-SU is connected with the battery and each of the N Aux-SUs;
- after the first set of electrical targets are pre-charged, controlling the first set of Main-SUs to be in an on-state;
- and
- controlling the first set of Aux-SUs to be in an off-state and then controlling the Semi-SU to be in the off-state.
5 more elements
Dependencies are inferred from the claim text.