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can signal wake-up circuit

A wake-up circuit and signal technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of complex signal wake-up methods and high cost, and achieve the effects of control system cost, fast response, and simple control mode

Active Publication Date: 2020-02-07
湖南容创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a CAN signal wake-up circuit with fast wake-up efficiency and low cost for the problems of traditional signal wake-up methods such as complex and high cost

Method used

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Embodiment Construction

[0013] In one embodiment, such as figure 1 As shown, a CAN signal wake-up circuit includes a voltage comparison circuit 120 and a CAN signal detection circuit 110 for connecting to a CAN network. The CAN signal detection circuit 110 is connected to the first input terminal of the voltage comparison circuit 120 and is also used for connecting to a CAN network. 300. The second input terminal of the voltage comparison circuit 120 is used to receive an external voltage, and the output terminal of the voltage comparison circuit 120 is also used to connect to the device 200 to be woken up.

[0014] Specifically, the CAN signal detection circuit 110 is used to receive the CAN signal in the CAN network 300, convert the CAN signal into a first voltage signal CAN_V1, and output the first voltage signal CAN_V1 to the first input terminal of the voltage comparison circuit 120; The comparison circuit 120 receives the first voltage signal CAN_V1 and the external voltage VCC2, and outputs a ...

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Abstract

The invention relates to a CAN signal wake-up circuit. The CAN signal wake-up circuit comprises a voltage comparison circuit and a CAN signal detection circuit, wherein the CAN signal detection circuit is used for connecting a CAN network and is connected with a first input end of the voltage comparison circuit, a second input end of the voltage comparison circuit is used for receiving an external voltage, an output end of the voltage comparison circuit is used for connecting with equipment to be awaken, the CAN signal detection circuit is used for receiving a CAN signal in the CAN network, converting the CAN signal to a first voltage signal and outputting the first voltage signal to the first input end of the voltage comparison circuit, and the voltage comparison circuit is used for receiving the first voltage signal and the external voltage and outputting a corresponding control signal to the equipment to be awaken according to the first voltage signal and the external voltage so as to perform awakening control. The CAN signal wake-up circuit is simple in control mode and rapid in response, a chip with a CAN signal awaking function is not required to be used, and the system cost is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of battery management systems, in particular to a CAN signal wake-up circuit. Background technique [0002] In new energy electric vehicles, the battery management system is basically directly powered by the lead-acid battery, and can be awakened by a signal under certain conditions to enter the normal working mode. The traditional wake-up method adopts CAN (Controller Area Network, controller area network) message wake-up. CAN message wake-up usually wakes up the battery management system through a chip with CAN wake-up function, such as TJA1043, etc., and the CAN message wake-up source requires the corresponding digital control unit to provide data information, the control mode is more complicated, and the response time is slow. And the price of the chip with CAN wake-up function is relatively high, which is not conducive to cost control. Contents of the invention [0003] Based on this, it is necessar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0069
Inventor 林勇周显宋周思琪唐桂清
Owner 湖南容创科技有限公司
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