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A software control method and system for an interleaved parallel boost circuit

A software control and circuit technology, applied in control/regulation systems, battery/fuel cell control devices, electrical components, etc., can solve problems such as output voltage oscillation, DCDC module heating, DCDC module damage, etc., to achieve the effect of ensuring safety

Active Publication Date: 2022-05-24
SHENZHEN LANDE AUTOMOBILE POWER SUPPLY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method and system for interleaved parallel Boost circuit software control, to solve the problem that when multiple DCDC modules are interleaved and parallel connected in parallel, the DCDC module generates heat due to the uneven current between the DCDC modules, and the output The voltage fluctuates, and the DCDC module is prone to damage

Method used

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  • A software control method and system for an interleaved parallel boost circuit
  • A software control method and system for an interleaved parallel boost circuit
  • A software control method and system for an interleaved parallel boost circuit

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Embodiment 1

[0045] like figure 1 As shown, the present invention provides a software control method for an interleaved parallel Boost circuit,

[0046] (1) Initialize the host DCDC controller and multiple slave DCDC controllers output in parallel. After the initialization is successful, CAN communication is performed between the host DCDC controller and the slave DCDC controller to realize real-time information transmission. The vehicle control module obtains the information of the lithium battery in real time. When the lithium battery needs to be charged, the vehicle control module generates a work instruction and sends the work instruction to the hydrogen fuel cell stack and the host DCDC controller. After receiving the work order, the hydrogen fuel cell stack will perform self-check. If the self-check is successful, a preparation work order will be generated, and the preparation work order will be sent to the vehicle control module. After receiving the work order, the host DCDC control...

Embodiment 2

[0057] like figure 2 and 3 As shown, the present invention also provides an interleaved parallel boost circuit software control system, including a hydrogen fuel cell stack, a vehicle control module, a lithium battery, a host DCDC module and multiple slave DCDC modules. The vehicle control module is electrically connected with the host DCDC module, the hydrogen fuel cell stack and the lithium battery through the Boost circuit. The host DCDC module and multiple slave DCDC modules are connected in parallel between the hydrogen fuel cell stack and the lithium battery.

[0058] The host DCDC module includes a host DCDC controller, a host DCDC converter and a host DCDC temperature module, and the slave DCDC module includes a slave DCDC controller, a slave DCDC converter and a slave DCDC temperature module.

[0059] The host DCDC controller is electrically connected to the vehicle control module; the hydrogen fuel cell stack is electrically connected to the host DCDC controller an...

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Abstract

The invention relates to a software control method and system for an interleaved parallel Boost circuit. The method includes the following steps: initializing a parallel output host DCDC controller and a plurality of slave DCDC controllers, performing CAN communication between the host DCDC controller and the slave DCDC controllers after successful initialization, and hydrogen fuel cell stack Start to work, the host DCDC converter and the slave DCDC converter are powered on and start working to charge the lithium battery. The host DCDC controller receives the charging parameters of the vehicle control module, and reads the electrical parameters of the host DCDC module and the slave DCDC module. The host DCDC controller adjusts the output voltage, input current and temperature of the host DCDC module and the slave DCDC module according to the read electrical parameters. The module performs current sharing settings. Through the present invention, the problem of unbalanced current caused by hardware differences between DCDC modules and uncontrollable battery stacks after DCDC modules are damaged can be avoided.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a software control method and system of an interleaved parallel boost circuit. Background technique [0002] As the country with the largest energy consumption, my country's current energy structure is mainly due to the lack of domestic fossil fuel resources and limited oil production. Therefore, it needs to rely on a large amount of oil imports every year to meet the energy needs of daily industrial production and life. As a fossil fuel, after long-term development and utilization by human beings, petroleum has been unable to meet the growing demand for energy in the global economic development. Compared with the scarcity of fossil fuels, my country's power resources are relatively abundant. Therefore, the development of the new energy industry is a trend of my country's future industrial development. With the rapid development of new energy technologies, electric vehicles h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/158H02M1/32H02J7/00B60L58/30B60L58/10
CPCH02M3/1584H02M1/32H02J7/00047B60L58/30B60L58/10Y04S30/12Y02T10/70Y02T90/40Y02T90/167
Inventor 石画
Owner SHENZHEN LANDE AUTOMOBILE POWER SUPPLY TECHCO
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