WO2021098158A1 - 一种一体式bldc电机 - Google Patents

一种一体式bldc电机 Download PDF

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Publication number
WO2021098158A1
WO2021098158A1 PCT/CN2020/088746 CN2020088746W WO2021098158A1 WO 2021098158 A1 WO2021098158 A1 WO 2021098158A1 CN 2020088746 W CN2020088746 W CN 2020088746W WO 2021098158 A1 WO2021098158 A1 WO 2021098158A1
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Prior art keywords
bmc
heat dissipation
control board
bldc motor
bmc host
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PCT/CN2020/088746
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English (en)
French (fr)
Inventor
沈恩明
沈以撒
沈荣泉
林谦元
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湖州南洋电机有限公司
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Publication of WO2021098158A1 publication Critical patent/WO2021098158A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer

Definitions

  • the invention belongs to the field of BLDC motors for drum washing machines, and in particular relates to an integrated BLDC motor for drum washing machines.
  • the BLDC motor used in the existing drum washing machine has a split structure including a BMC host and a control board.
  • the BMC host and the control board are installed independently.
  • the BMC host is connected to the control board through a power cord.
  • the control board is equipped with a power supply line connected to the power supply and The signal line connected to the control system of the drum washing machine.
  • the structure of the BMC host includes a shell formed by injection molding and a power system located in the shell. Since the existing BLDC motor has a split structure, when the customer purchases and assembles it in the drum washing machine, it cannot be installed in one step, and the installation is cumbersome.
  • the installation position of the BMC host on the drum washing machine and the installation position of the control panel on the drum washing machine usually have a long distance, which requires a longer connection with the power cord.
  • the drum washing machine has a certain shaking during operation. Passing to the power cord will cause the power cord to collide with adjacent accessories and produce noise. Therefore, it is necessary to add a number of fixed points on the power cord, which further increases the cumbersome degree of installation.
  • the control chip generates a lot of heat.
  • the control board is installed in the corresponding position of the drum washing machine, the control chip is located between the control board and the installation position, and the heat accumulation is difficult to dissipate in time.
  • the control chip is prone to overheating and malfunctions, making the BLDC motor unable to work normally, that is, the BLDC motor is prone to failure.
  • the object of the present invention is to provide an integrated BLDC motor.
  • the invention has the advantages of simple installation and not easy to malfunction.
  • an integrated BLDC motor including a BMC host and a control board
  • the BMC host is connected to the control board through a power cord
  • the control board is arranged on the back side of the BMC host
  • the control board is connected to the BMC host
  • the rear side panel is connected to the BMC host through a plurality of supporting legs, and the distance between the rear side panel and the BMC host is 45-70mm.
  • a plurality of nuts are provided on the outer side of the BMC main body, the supporting feet are provided with through holes, and screws are provided in the through holes, and the screws are connected with corresponding nuts.
  • the outer side of the rear side plate is provided with a first heat dissipation area and a second heat dissipation area
  • the first heat dissipation area is provided with a plurality of annular heat dissipation ribs
  • the second heat dissipation area is provided with a plurality of heat dissipation ribs.
  • a fixing ring is provided on the supporting leg or the BMC host.
  • a socket is provided on the BMC host, a signal line connected to the control board is provided on the socket, and a power supply line connected to the control board is provided on the socket.
  • a plurality of tubular connecting posts are provided on the outer side of the BMC host, the nuts are injection molded into the connecting posts, and the ends of the supporting legs are provided with fixed parts extending outward.
  • the upper is provided with a through hole, and the fixing part is provided with a positioning column that is tightly inserted into the connecting column.
  • the present invention integrates the control board into the BMC host, and the resulting BLDC motor can be installed in place in one step when assembled in the drum washing machine, that is, only the assembly between the BMC host and the drum washing machine needs to be completed.
  • Installation is relatively simple.
  • the control board is located on the back side of the BMC mainframe, which effectively shortens the distance between the control board and the BMC mainframe, shortens the length of the power cord, and the power cord is not prone to shaking and causing collision noise, which can reduce the fixed point of the power cord and further make
  • the installation of the BLDC motor is relatively simple.
  • a heat dissipation structure is added to the rear panel, and the heat of the control chip is quickly dissipated through the heat sink and the heat dissipation ribs, so as to avoid malfunctions caused by the control chip overheating, so that the BLDC motor can work normally for a long time, that is, the BLDC motor is not prone to failure.
  • the present invention optimizes the connection structure between the support foot and the BMC main machine, and the positioning column and the connection column are tightly matched structure, which can make the screw only receive the axial vibration force when the BMC main machine is working, and not receive the radial vibration. It can reduce the probability of screw loosening and further reduce the probability of failure. Therefore, the present invention has the advantages of simple installation and not prone to failure.
  • Fig. 1 is a perspective view of the present invention from a rear perspective.
  • Fig. 2 is a front perspective view of the present invention.
  • Figure 3 is a schematic diagram of the structure of the connection between the support leg and the BMC host.
  • Fig. 4 is a schematic diagram of the structure of the rear side plate.
  • Figure 5 is a schematic view of the structure of the control panel from the rear view.
  • the markings in the attached drawings are: 1-BMC host, 2-control board, 3-power cord, 4-rear side board, 5-support foot, 6-nut, 7-through hole, 8-screw, 9-radiation rib , 10- heat sink, 11- heat conduction boss, 12- fixed ring, 13- socket, 14- signal line, 15- power supply line, 16- connection post, 17- fixed part, 18- positioning post.
  • An integrated BLDC motor as shown in Figure 1, includes a BMC host 1 and a control board 2.
  • the BMC host 1 is connected to the control board 2 through a power cord 3.
  • the control board 2 is arranged on the back side of the BMC host 1, and the control board 2 is provided with a rear side plate 4 connected to the BMC host 1, and the rear side plate 4 is connected to the BMC host 1 through a plurality of supporting feet 5.
  • the distance between the rear side plate 4 and the BMC host 1 is 45-70mm, and the rear side plate 4 is located on the rear side plate. 4 Leave enough control board 2 installation space and heat dissipation space between BMC host 1.
  • a plurality of nuts 6 are provided on the outer side of the BMC host 1, a through hole 7 is provided on the supporting leg 5, and a screw 8 is provided in the through hole 7, and the screw 8 is connected with a corresponding nut 6.
  • the outer side of the rear side plate 4 is provided with a first heat dissipation area and a second heat dissipation area.
  • the first heat dissipation area is provided with a plurality of annular heat dissipation ribs 9 and the second heat dissipation area is provided with a plurality of side-by-side heat dissipation fins 10 ,
  • the inner side surface of the rear side plate 4 corresponding to the second heat dissipation area is provided with a heat conduction boss 11.
  • the heat-conducting boss 11 is in contact with the control chip on the control board 2, and the heat-conducting boss 11 is coated with oil to cause silicone oil.
  • the supporting leg 5 or the BMC host 1 is provided with a fixing ring 12.
  • the fixing ring 12 is used for fixing the signal line 14, the power line 3 or the power supply line 15, and the wire harness is fixed to the fixing ring 12 with a cable tie.
  • the BMC host 1 is provided with a socket 13, the socket 13 is provided with a signal line 14 connected with the control board 2, and the socket 13 is provided with a power supply line 15 connected with the control board 2.
  • the wire harness originally used to connect to the signal line 14 on the control system of the drum washing machine and the wire harness originally used to connect to the power supply line 15 on the power supply can be integrated into the same plug and connected to the socket 13 and communicate with the signal through the plug and socket 13 respectively.
  • the line 14 and the power supply line 15 are connected, thereby reducing the cumbersome degree of electrical connection and installation of the BLDC motor.
  • a plurality of tubular connecting posts 16 are provided on the outer side of the BMC host 1, the nut 6 is injection molded into the connecting posts 16, and the end of the supporting leg 5 is provided with an outwardly extending fixing portion 17 on the fixing portion 17 A through hole 7 is provided, and the fixing portion 17 is provided with a positioning column 18 that is tightly inserted into the connecting column 16.
  • the main improvement of the present invention is that the BMC host and the control board are integrated, and the corresponding connection structure is optimized.
  • the resulting BLDC motor can be installed in place in one step when assembled in a drum washing machine, namely Only need to complete the assembly between the BMC host and the drum washing machine, the installation is relatively simple.
  • the control board is located on the back side of the BMC mainframe, which effectively shortens the distance between the control board and the BMC mainframe, shortens the length of the power cord, and the power cord is not prone to shaking and causing collision noise, which can reduce the fixed point of the power cord and further make
  • the installation of the BLDC motor is relatively simple.
  • a heat dissipation structure is added to the rear panel, and the heat of the control chip is quickly dissipated through the heat sink and the heat dissipation ribs, so as to avoid malfunctions caused by the control chip overheating, so that the BLDC motor can work normally for a long time, that is, the BLDC motor is not prone to failure.
  • the present invention optimizes the connection structure between the support foot and the BMC main machine, and the positioning column and the connection column are tightly matched structure, which can make the screw only receive the axial vibration force when the BMC main machine is working, and not receive the radial vibration. It can reduce the probability of screw loosening and further reduce the probability of failure. Therefore, the present invention has the advantages of simple installation and not prone to failure.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

本发明公开了一种一体式BLDC电机，包括BMC主机(1)和控制板(2)，BMC主机(1)通过电源线(3)连接控制板(2)，所述控制板(2)设置于BMC主机(1)的后侧，控制板(2)上设有与BMC主机(1)连接的后侧板(4)，后侧板(4)通过多个支撑脚(5)连接BMC主机(1)，所述后侧板(4)与BMC主机(1)的距离45-70mm；所述BMC主机(1)的外侧设有多个螺母(6)，所述支撑脚(5)上设有通孔(7)，通孔(7)内设有螺丝(8)，所述螺丝(8)与对应的螺母(6)连接。本发明具有安装简便和不容易发生故障的优点。

Description

一种一体式BLDC电机 技术领域
本发明属于滚筒洗衣机用的BLDC电机领域，尤其涉及一种滚筒洗衣机用的一体式BLDC电机。
背景技术
现有滚筒洗衣机所用的BLDC电机为分体式结构包括BMC主机和控制板，BMC主机和控制板分别独立安装，BMC主机通过电源线连接控制板，控制板上设有与电源连接的供电线以及与滚筒洗衣机控制系统连接的信号线。所述BMC主机的结构包括注塑形成的外壳和位于外壳内的动力系统。由于现有的BLDC电机为分体式结构，客户在购入并组装于滚筒洗衣机时，不能一步安装到位，安装较为繁琐。BMC主机在滚筒洗衣机上的的安装位与控制板在滚筒洗衣机上的安装位通常具有一段较长距离，需要采用较长和电源线连接，而滚筒洗衣机在运转过程中具有一定的晃动，该晃动传递到电源线，会导致电源线与相邻配件发生碰撞发出噪音，故而还需进在电源线上增加若干个固定点，这进一步增加了安装的繁琐程度。此外，控制板的背部具有控制芯片，该控制芯片的发热量较大，当控制板安装于滚筒洗衣机的对应位置后，控制芯片位于控制板和安装位之间，热量积蓄难以及时散发出去，导致控制芯片容易过热而产生故障，使BLDC电机无法正常工作，即BLDC电机容易发生故障。
因此，现有的BLDC电机存在安装繁琐和容易发生故障的缺陷。
发明内容
本发明的目的在于，提供一种一体式BLDC电机。本发明具有安装简便和不容易发生故障的优点。
本发明的技术方案：一种一体式BLDC电机，包括BMC主机和控制板，BMC主机通过电源线连接控制板，所述控制板设置于BMC主机的后侧，控制板上设有与BMC主机连接的后侧板，后侧板通过多个支撑脚连接BMC主机，所述后侧板与BMC主机的距离45-70mm。
前述的一体式BLDC电机中，所述BMC主机的外侧设有多个螺母，所述支撑脚上设有通孔，通孔内设有螺丝，所述螺丝与对应的螺母连接。
前述的一体式BLDC电机中，所述后侧板的外侧面设有第一散热区和第二散热区，第一散热区上设有多个环形的散热筋，第二散热区上设有多个并排的散热片，所述后侧板对应于第二散热区的内侧面上设有导热凸台。
前述的一体式BLDC电机中，所述支撑脚或BMC主机上设有固定环。
前述的一体式BLDC电机中，所述BMC主机上设有插座，插座上设有与控制板连接的信号线，插座上设有与控制板连接的供电线。
前述的一体式BLDC电机中，所述支撑脚的数量有三个、绕BMC主机的轴线均匀分布。
前述的一体式BLDC电机中，所述BMC主机的外侧设有多个管状的连接柱，所述螺母注塑于连接柱内，所述支撑脚的端部设有向外延伸的固定部，固定部上设有通孔，固定部上设有紧配插入到连接柱内的定位柱。
与现有技术相比，本发明将控制板集成到BMC主机上，由此得到的BLDC电机，组装于滚筒洗衣机时，可一步安装到位，即只需要完成BMC主机与滚筒洗衣机之间的装配，安装较为简便。控制板位于 BMC主机的后侧，有效缩短了控制板与BMC主机之间的距离，缩短电源线的长度，电源线不容易发生晃动而发出碰撞噪音，从而可减少电源线的固定点，进一步使BLDC电机的安装较为简便。在后侧板上增加了散热结构，通过散热片和散热筋使控制芯片的热量快速发散，从而避免控制芯片过热引起的故障，使BLDC电机可长期正常工作，即BLDC电机不容易发生故障。此外，本发明优化了支撑脚与BMC主机之间的连接结构，定位柱与连接柱之间为紧配结构，可使螺钉在BMC主机工作时只受到轴向振动力作用、不受到径向振动力作用，从而可降低螺钉松脱的概率，进一步降低故障概率的发生。因此，本发明具有安装简便和不容易发生故障的优点。
附图说明
图1是本发明后视视角的立体图。
图2是本发明前视视角的立体图。
图3是支撑脚与BMC主机连接处的结构示意图。
图4是后侧板的结构示意图。
图5是控制板后视视角的结构示意图。
附图中的标记为：1-BMC主机，2-控制板，3-电源线，4-后侧板，5-支撑脚，6-螺母，7-通孔，8-螺丝，9-散热筋，10-散热片，11-导热凸台，12-固定环，13-插座，14-信号线，15-供电线，16-连接柱，17-固定部，18-定位柱。
具体实施方式
下面结合附图和实施例对本发明作进一步的说明，但并不作为对本发明限制的依据。
实施例。一种一体式BLDC电机，如图1所示，包括BMC主机1和控制板2，BMC主机1通过电源线3连接控制板2，所述控制板2设置于BMC主机1的后侧，控制板2上设有与BMC主机1连接的后侧 板4，后侧板4通过多个支撑脚5连接BMC主机1，所述后侧板4与BMC主机1的距离45-70mm，在后侧板4与BMC主机1之间留出足够的控制板2安装空间以及散热空间。
所述BMC主机1的外侧设有多个螺母6，所述支撑脚5上设有通孔7，通孔7内设有螺丝8，所述螺丝8与对应的螺母6连接。
所述后侧板4的外侧面设有第一散热区和第二散热区，第一散热区上设有多个环形的散热筋9，第二散热区上设有多个并排的散热片10，所述后侧板4对应于第二散热区的内侧面上设有导热凸台11。所述导热凸台11与控制板2上的控制芯片接触，导热凸台11上涂油导致硅油。
所述支撑脚5或BMC主机1上设有固定环12。所述固定环12用于信号线14、电源线3或供电线15的固定，将线束用扎带固定与固定环12上。
所述BMC主机1上设有插座13，插座13上设有与控制板2连接的信号线14，插座13上设有与控制板2连接的供电线15。滚筒洗衣机控制系统上原本用于和信号线14连接的线束以及电源上原本用于和供电线15连接的线束，可集成于同一个插头并连接到插座13上，通过插头和插座13分别与信号线14以及供电线15连接，以此可降低BLDC电机电连接安装时的繁琐程度。
所述支撑脚5的数量有三个、绕BMC主机1的轴线均匀分布。
所述BMC主机1的外侧设有多个管状的连接柱16，所述螺母6注塑于连接柱16内，所述支撑脚5的端部设有向外延伸的固定部17，固定部17上设有通孔7，固定部17上设有紧配插入到连接柱16内的定位柱18。
本发明相较于现有技术的主要改进点是将BMC主机和控制板集成到一体，并优化了相应的连接结构，由此得到的BLDC电机，组装 于滚筒洗衣机时，可一步安装到位，即只需要完成BMC主机与滚筒洗衣机之间的装配，安装较为简便。控制板位于BMC主机的后侧，有效缩短了控制板与BMC主机之间的距离，缩短电源线的长度，电源线不容易发生晃动而发出碰撞噪音，从而可减少电源线的固定点，进一步使BLDC电机的安装较为简便。在后侧板上增加了散热结构，通过散热片和散热筋使控制芯片的热量快速发散，从而避免控制芯片过热引起的故障，使BLDC电机可长期正常工作，即BLDC电机不容易发生故障。此外，本发明优化了支撑脚与BMC主机之间的连接结构，定位柱与连接柱之间为紧配结构，可使螺钉在BMC主机工作时只受到轴向振动力作用、不受到径向振动力作用，从而可降低螺钉松脱的概率，进一步降低故障概率的发生。因此，本发明具有安装简便和不容易发生故障的优点。

Claims (7)

  1. 一种一体式BLDC电机，包括BMC主机(1)和控制板(2)，BMC主机(1)通过电源线(3)连接控制板(2)，其特征在于：所述控制板(2)设置于BMC主机(1)的后侧，控制板(2)上设有与BMC主机(1)连接的后侧板(4)，后侧板(4)通过多个支撑脚(5)连接BMC主机(1)，所述后侧板(4)与BMC主机(1)的距离45-70mm。
  2. 根据权利要求1所述的一体式BLDC电机，其特征在于：所述BMC主机(1)的外侧设有多个螺母(6)，所述支撑脚(5)上设有通孔(7)，通孔(7)内设有螺丝(8)，所述螺丝(8)与对应的螺母(6)连接。
  3. 根据权利要求2所述的一体式BLDC电机，其特征在于：所述后侧板(4)的外侧面设有第一散热区和第二散热区，第一散热区上设有多个环形的散热筋(9)，第二散热区上设有多个并排的散热片(10)，所述后侧板(4)对应于第二散热区的内侧面上设有导热凸台(11)。
  4. 根据权利要求1所述的一体式BLDC电机，其特征在于：所述支撑脚(5)或BMC主机(1)上设有固定环(12)。
  5. 根据权利要求1所述的一体式BLDC电机，其特征在于：所述BMC主机(1)上设有插座(13)，插座(13)上设有与控制板(2)连接的信号线(14)，插座(13)上设有与控制板(2)连接的供电线(15)。
  6. 根据权利要求1所述的一体式BLDC电机，其特征在于：所述支撑脚(5)的数量有三个、绕BMC主机(1)的轴线均匀分布。
  7. 根据权利要求2所述的一体式BLDC电机，其特征在于：所述BMC主机(1)的外侧设有多个管状的连接柱(16)，所述螺母(6) 注塑于连接柱(16)内，所述支撑脚(5)的端部设有向外延伸的固定部(17)，固定部(17)上设有通孔(7)，固定部(17)上设有紧配插入到连接柱(16)内的定位柱(18)。
PCT/CN2020/088746 2019-11-22 2020-05-06 一种一体式bldc电机 WO2021098158A1 (zh)

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