Low-voltage high-current three-phase driving power module group structure
A power module group and high current technology, applied in the direction of output power conversion device, circuit arrangement on the support structure, electrical components, etc., can solve permanent damage, damage to connecting parts or insulation system, weakening of drive module driving ability, etc. problems, to achieve good heat dissipation performance, improve shock resistance and stability, and compact structure
Active Publication Date: 2013-12-11
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
In particular, the damage to the connecting parts or the insulation system caused by the vibration and friction between the parts will cause the driving capability of the drive module to weaken or even short-circuit and cause permanent damage. These safety issues are the key issues in the structural design of the power module.
How to solve the above problems is not yet a good technical measure
Method used
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[0024] Such as figure 1 As shown, based on the overall shape of the parallel connection structure of multiple MOSFET power devices, the housing 5 is connected to the base 10, the base 10 includes a heat dissipation support plate 101, the heat dissipation support plate 101 is provided with a heat sink shell 102, the heat dissipation support plate 101 and the heat sink The housing 102 can be a unitary structure, or it can be two connected parts. The heat sink housing 102 is provided with a fixed connection plate 11 for the power module group housing, and a screw hole 111 is provided on the fixed connection plate 11 of the power module group housing; the heat sink housing 102 is also provided with a screw hole 12 ( figure 2 shown). The wall of the casing 5 is connected and fixed with the power module group output AC side three-phase terminal 7 and the power module group positive pole terminal 1 ( figure 2 ), the three-phase terminal 7 on the output AC side of the power module...
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The invention discloses a low-voltage high-current three-phase driving power module group structure. In the structure, a plurality of single-tube power devices which are arranged in a staggered way, a connecting copper bar which is used for connecting each single tube in series and is arranged on the output alternating-current side of a power module group, a bar-shaped convergence bridge of a connecting copper bar which is connected in parallel with the cathode of a battery, a bar-shaped convergence bridge of a connecting copper bar which is connected in parallel the anode of the battery, a connecting copper bar on a power output lead-out and adoption alternating-current side, and mechanical design between various connecting copper bars and a shell wiring post are meshed (clamped); and the power module group is supported by a connecting copper bar. According to the structure, the shock resistance and stability of the power module group are improved; and the structure is compact and has high radiating performance.
Description
technical field [0001] The invention belongs to the connecting structure of driving power modules of a hybrid electric vehicle, and in particular relates to a connecting supporting structure of a low-voltage and high-current three-phase driving power module group. Background technique [0002] The drive unit of the motor controller is a key component in a hybrid vehicle. For the small and medium power motor controller that uses MOSFET parallel technology to realize a low-voltage, high-current power drive unit, when it is fixed on the vehicle, the structural design of the fixed connection of the power device Many factors need to be considered, that is, to ensure that the performance of the motor controller meets the requirements of the entire vehicle, and at the same time ensure that the motor controller has sufficient safety and reliability. In order to achieve higher energy density and power density, most of the drive units or modules of controllers for low-voltage and high...
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IPC IPC(8): H02M1/00H05K7/02
Inventor 张红霞罗建武吴杰余王洪涛黄春春尹国慧
Owner DONGFENG MOTOR CORP HUBEI