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A brushless centrifugal pump for new energy vehicles

A technology for new energy vehicles and centrifugal pumps, which is applied to the components of pumping devices for elastic fluids, pumps, and pump control. The effect of increased service life, reduced noise and stable performance

Active Publication Date: 2021-05-07
杭州中盟光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The rotation of the rotor of traditional mechanical and brushed water pumps requires bearings and gaskets, so that the weight and volume of the entire water pump are relatively large, and when rotating, the wear of the bearings will be relatively large, which will reduce the service life and increase the noise. Big

Method used

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  • A brushless centrifugal pump for new energy vehicles
  • A brushless centrifugal pump for new energy vehicles
  • A brushless centrifugal pump for new energy vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] combine Figure 1-6 , a brushless centrifugal pump for new energy vehicles, including an end cover 1, a rotor 3, a shaft core 4, a stator 5, a casing 8, and a rear cover 10; it is characterized in that: there is no electrified material in the rotor, and the rotor includes a jacket , inner sleeve, permanent magnet rotating core, graphite shaft sleeve, impeller; the casing includes an outer cylinder and an inner barrel integrally formed; both the outer cylinder and the inner barrel have only one end opening, and the inner cylinder is set in the outer cylinder, and the opening direction of the outer cylinder and the inner barrel On the contrary; the stator is set in the opening of the outer cylinder of the casing, the rotor and the shaft core are set in the opening of the inner cylinder, the rotor, the shaft core, and the stator are concentric and the stator can drive the rotor to rotate around the shaft core after being energized; the end cover and the casing are arranged ...

Embodiment 2

[0036] The present invention also sets a safety detection function in the PCB circuit board, determines the rotational speed of the rotor according to the position of the rotor determined by the counter electromotive force of the three pairs of windings, and sends the rotational speed data to an external controller; at the same time, the inlet of the pump body and the outlet of the pump body Set up a flow detector to detect the flow A per unit time at the inlet of the pump body and the flow B per unit time at the outlet.

[0037] The controller receives the data of the rotor, and calculates C=B-A according to the unit time flow A at the inlet of the pump body and the unit time flow B at the outlet; if C is greater than a certain threshold, it means that the pump body leaks, and the power supply of the pump body is immediately turned off. Cut off all circuits directly connected to the pump body; calculate kR-A and B-kR at the same time; if B-kR is greater than a certain threshol...

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Abstract

The invention relates to a brushless centrifugal pump for new energy vehicles. The water pump completely isolates and keeps away the electrical components and the power components of the pump body through the casing. Even if part of the pump body ages and leaks, it will not immediately endanger the safety of the electrical components. Moreover, the distance between the leakage location and the circuit board is relatively long, so even if a leakage occurs, there is enough alarm time. The shaft design uses graphite bushings, which are lighter in weight than traditional bearings, wear-resistant, self-lubricating, and high-temperature resistant. The shaft core uses zirconia to increase the service life of the pump. The surface finish of the shaft core is several times higher than that of the non-traditional stainless steel shaft, so the service life of the pump is doubled, and the noise is relatively reduced by about 10%. The shaft core of zirconia is processed Craftsmanship and production guarantee its concentricity, which is several times higher than that of traditional stainless steel. The shaft made of zirconia will not be deformed during production, storage, transportation, assembly, etc., and its performance is more stable than that of stainless steel shaft.

Description

technical field [0001] The invention relates to the field of water pumps, in particular to a brushless centrifugal pump for new energy vehicles. Background technique [0002] With the popularization of electric vehicles, water pumps are more and more widely used in new energy vehicles. In fuel vehicles, the sealing and durability of the water pump are generally not very strict, because the replacement and maintenance costs of the water pump of traditional power vehicles are relatively low, and it will not cause excessive losses to the use of the vehicle. However, in new energy vehicles, the proportion of electric components in the whole vehicle has increased significantly. Once the water pump fails or leaks electricity, it will cause the car to lose power and break down, and it will cause danger such as spontaneous combustion and endanger life safety. Therefore, new requirements are put forward for the water pump of new energy vehicles. [0003] Application number 20162078...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D1/00F04D15/00F04D29/02F04D29/043F04D29/42F04D29/66
CPCF04D1/00F04D13/0606F04D15/00F04D15/0077F04D29/026F04D29/043F04D29/426F04D29/669
Inventor 张鑫龙孙计兵
Owner 杭州中盟光电科技有限公司