Electric car main engine power circuit
A technology for power supply circuits and electric vehicles, applied in electrical components, output power conversion devices, AC power input conversion to DC power output, etc., can solve the problems that electric vehicles cannot pass EMI tests
Inactive Publication Date: 2017-05-31
OPTIMUM BATTERY CO LTD
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Problems solved by technology
However, although the power supply circuit filters the power supply voltage, the filtered output voltage will still have relatively large radiation, which makes the electric vehicle unable to pass the EMI test.
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[0014] In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.
[0015] see figure 1 , which is a schematic circuit diagram of the electric vehicle host power supply circuit 100 provided by the present invention. The electric vehicle host power supply circuit 100 includes a power socket 10 , a filter module 20 , a rectifier bridge 30 and a transformer 40 .
[0016] The power socket 10 is used for plugging with a 24V AC power supply to receive the power supply voltage. In this embodiment, the power supply voltage is an AC voltage.
[0017] The filter module 20 is used to filter the power supply voltage, and ou...
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The invention provides an electric car main engine power circuit which comprises a power plug, filter module, rectifier bridge and transformer; the power plug is used for connecting with power and receiving voltage, the filter module is used for filtering the voltage; the rectifier bridge is used for rectifying, the transformer is used for increasing and decreasing voltage; the power plug comprises base body, a, a second jack and a third jack; the filtering module comprises a first common mode inductor, a second common mode inductor; a first end of the first common mode inductor is connected with the first jack, a second end of the first common mode inductor is connected with the third jack, the third end of the first common mode inductor is connected with the first end of the second common mode inductor, the fourth end of the first mode inductor is connected with the second end of the second common mode inductor; the three end and the fourth end of the second common mode inductor are each connected with the rectifier bridge. The anti-EMI effect of the electric car main engine power circuit is good.
Description
[0001] 【Technical field】 [0002] The invention relates to the technical field of electromagnetic interference, in particular to a power supply circuit of a main engine of an electric vehicle. [0003] 【Background technique】 [0004] Electromagnetic Interference (EMI) tests are required before leaving the factory for electric vehicles to ensure that their anti-electromagnetic interference capabilities comply with relevant regulations. The biggest interference source of electric vehicles comes from the host system of electric vehicles, and the interference generated by the power supply part of the host system occupies a large proportion. [0005] At present, a common-mode inductor (common-mode choke coil) is usually used in the power supply circuit of the host system to filter the common-mode electromagnetic interference signal, and then the filtered signal is input into the rectifier bridge and the transformer for output. However, although the power supply circuit filters the ...
Claims
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IPC IPC(8): H02M7/219H02M1/12
CPCH02M1/126H02M7/219H02M1/123
Inventor 余卫平
Owner OPTIMUM BATTERY CO LTD