Electric vehicle controller

Abstract

The utility model relates to an electric vehicle controller, which comprises a base, a top cover is assembled on the base, the bottom of the top cover is respectively provided with a first compression raised line and a second compression raised line, an aluminum-based circuit board is arranged in the base, and a power device module, a three-phase power supply terminal and an input power supply terminal are mounted on the aluminum-based circuit board. A first supporting boss is arranged in the base, and a second supporting boss is arranged on the three-phase power supply terminal; a first circuit board is placed on the top of the first supporting boss and the top of the second supporting boss at the same time, and the first circuit board is pressed through a first pressing protruding strip and a second pressing protruding strip. A control device module is assembled on the first circuit board, the first circuit board is electrically connected with the aluminum-based circuit board through a plug pin header, second circuit boards are respectively arranged on two sides of the first circuit board, a plurality of capacitors are assembled on each second circuit board, and each second circuit board is electrically connected with the aluminum-based circuit board through a plurality of conducting rings. The heat dissipation efficiency is high, no extra heat dissipation device needs to be arranged, and the structural layout is reasonable and compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motor car controller technical field especially a kind of electric motor car controller. BACKGROUND

[0002] Electric motor car controller is widely used in various electric motor car types, including electric bicycle, electric two-wheeled motorcycle, electric tricycle, electric three-wheeled motorcycle, electric four-wheeled vehicle etc., is the core component of electric motor car electric system, mainly for controlling the start, operation, advance and retreat, speed, stop of electric motor car motor and other electronic devices of electric motor car. Electric motor car controller usually includes low-voltage unit and high-voltage unit, wherein, low-voltage unit is used for control signal transmission, and high-voltage unit is used for driving signal conversion.

[0003] In prior art, considering manufacturing cost and controller internal layout and other factors, part of devices in low-voltage unit cannot be mounted on circuit board in surface mount device form, so gap for accommodating the pins of such devices needs to be left between circuit board and inner bottom wall of base. However, this layout mode leads to poor heat dissipation performance of circuit board, and additional heat dissipation devices need to be arranged for heat dissipation, leading to the increase of volume of electric motor car controller, which is difficult to meet current small and light use requirements. SUMMARY

[0004] In view of the above-mentioned shortcomings in prior production technology, the applicant provides an electric motor car controller, which is capable of being mounted on base by setting interval-arranged aluminum-based circuit board and first circuit board, without the need of arranging additional heat dissipation devices, so as to improve the heat dissipation efficiency of electric motor car controller and compact the structure layout of electric motor car controller.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] An electric motor car controller, comprising a base provided with an open top, wherein a top cover is arranged at the open top of the base, the bottom of the top cover is provided with a first pressing protrusion and a second pressing protrusion respectively, an aluminum-based circuit board is mounted on the bottom wall surface in the open top of the base, the top end surface of the aluminum-based circuit board is mounted with a power device module, a three-phase power terminal and an input power terminal respectively, a plurality of first support bosses are arranged on one side wall surface in the open top of the base, the first support bosses correspond to the first pressing protrusion, a plurality of second support bosses are arranged on the side wall surface of the three-phase power terminal, and the second support bosses correspond to the second pressing protrusion.

[0007] The top of the first support boss and the second support boss is simultaneously placed with a first circuit board, the first circuit board is pressed by the first pressing protrusion and the second pressing protrusion, so that the first circuit board is arranged above the aluminum-based circuit board in an interval.

[0008] The first circuit board is electrically connected with the aluminum-based circuit board through a connector pin, and two second circuit boards are arranged on the two sides of the first circuit board respectively, a plurality of capacitors are arranged on each second circuit board, each second circuit board is arranged above the aluminum-based circuit board in a spaced manner, and each second circuit board is electrically connected with the aluminum-based circuit board through a plurality of conductive rings.

[0009] As a further improvement of the above technical solution:

[0010] The inner side wall of the open base is provided with an inner convex edge in the circumferential direction, and the outer side wall of the top cover is provided with an outer convex edge corresponding to the inner convex edge in the circumferential direction, and the inner convex edge supports the outer convex edge, so that a mounting space is formed between the base and the top cover.

[0011] The top cover is provided with a first mounting hole, a second mounting hole and a third mounting hole.

[0012] The three-phase power terminal is arranged in the first mounting hole.

[0013] The input power terminal is arranged in the second mounting hole.

[0014] The aluminum-based circuit board is electrically connected with the three-phase power terminal and the input power terminal through a plurality of conductive sheets.

[0015] The structure of the single conductive sheet comprises a first conductive part and a second conductive part arranged in parallel with the first conductive part in a spaced manner, the second conductive part is in a planar shape, and the first conductive part and the second conductive part are sequentially connected through a first connecting part and a second connecting part.

[0016] The single second supporting boss is provided with a positioning lug.

[0017] The second pressing convex strip is provided with a first positioning groove corresponding to the positioning lug.

[0018] The first circuit board is provided with a second positioning groove corresponding to the positioning lug.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model discloses compact structure, reasonable, convenient operation can make aluminum-based circuit board stick to the base installation through the aluminum-based circuit board of interval arrangement, first circuit board, need not to arrange radiator device additionally, can improve the heat dissipation efficiency of electric vehicle controller, compact electric vehicle controller's structure layout.

[0021] The utility model also includes the following advantages:

[0022] (1) The utility model discloses a second circuit board is used as the condenser plate, and the condenser is arranged separately with the power device module, and the flexibility of internal layout of installation space can be further improved.

[0023] (2) The utility model discloses a first support boss, second support boss, third support convex strip, fourth support convex strip are set up, thereby need not extra setting up support structure, can make aluminium base circuit board, first circuit board upper and lower interval arrangement, clever design, and can further compact layout.

[0024] (3) The utility model discloses a first positioning groove, second positioning groove, positioning lug are set up, can position the installation position of first circuit board, and can be limited after completing installation, prevent its displacement in the use.

[0025] (4) The utility model discloses a conductive sheet is set up, can realize the mounting between three -phase power terminal and aluminium base circuit board, between input power terminal and aluminium base circuit board, thereby making aluminium base circuit board can be installed with base.

[0026] (5) The utility model discloses a limiting lug is set up, can position aluminium base circuit board.

[0027] (6) The utility model discloses a support leg is set up, can support corresponding three -phase power terminal, input power terminal, thereby improve structural stability. ACCURACY OF DRAWINGS

[0028] Figure 1 It is the structural schematic diagram of the utility model.

[0029] Figure 2 It is the explosion drawing of the utility model.

[0030] Figure 3 It is Figure 1 the front view.

[0031] Figure 4 It is Figure 3 the section view of A-A section in the utility model.

[0032] Figure 5 It is the overhead view of base in the utility model.

[0033] Figure 6 It is the structural schematic diagram of top cover in the utility model.

[0034] Figure 7 It is Figure 6 the side view.

[0035] Figure 8 It is the installation structural schematic diagram of three -phase power terminal and conductive sheet in the utility model.

[0036] Figure 9 It is the structure schematic view of the conductive sheet in the utility model.

[0037] Figure 10 It is the structure schematic view of the conductive sheet in the utility model. Figure 9 The side view of

[0038] Wherein: 1, base, 2, top cover, 3, upper cover, 4, waterproof vent cover, 5, aluminum circuit board, 6, first circuit board, 7, second circuit board, 8, capacitor, 9, aluminum ring, 10, first screw, 11, insulating ring, 12, conductive ring, 13, second screw, 14, lead terminal, 15, three-phase power terminal, 16, input power terminal, 17, support leg, 18, conductive sheet;

[0039] 101, first support boss, 102, inner convex edge, 103, limit bump, 104, locking hole;

[0040] 201, first pressing convex strip, 202, second pressing convex strip, 203, first mounting hole, 204, second mounting hole, 205, third mounting hole, 206, first positioning groove, 207, outer convex edge;

[0041] 601, second positioning groove;

[0042] 1501, second support boss, 1502, positioning bump;

[0043] 1801, first conductive part, 1802, second conductive part, 1803, first connecting part, 1804, second connecting part. DETAILED DESCRIPTION

[0044] The specific implementation of the utility model will be described below in combination with the drawings.

[0045] As Figures 1-10As shown in the figure, an electric vehicle controller comprises a base 1 provided with an opening at the top, a top cover 2 is fitted at the opening of the base 1, the bottom of the top cover 2 is respectively provided with a first compression protrusion 201 and a second compression protrusion 202, an aluminum-based circuit board 5 is attached and installed on the bottom wall surface in the opening of the base 1, the top end surface of the aluminum-based circuit board 5 is respectively attached with a power device module, a three-phase power terminal 15 and an input power terminal 16, a plurality of first support bosses 101 arranged in an array are arranged on the side wall surface in the opening of the base 1, the first support bosses 101 correspond to the first compression protrusion 201, a plurality of second support bosses 1501 are arranged on the side wall surface of the three-phase power terminal 15, the second support bosses 1501 correspond to the second compression protrusion 202; the top of the first support boss 101 and the second support boss 1501 is simultaneously placed with a first circuit board 6, and the first circuit board 6 is compressed by the first compression protrusion 201 and the second compression protrusion 202, so that the first circuit board 6 is arranged in an array above the aluminum-based circuit board 5; a control device module is fitted on the first circuit board 6, the first circuit board 6 is electrically connected with the aluminum-based circuit board 5 through a plug-in pin, a second circuit board 7 is arranged on both sides of the first circuit board 6, a plurality of capacitors 8 are fitted on a single second circuit board 7, a single second circuit board 7 is arranged in an array above the aluminum-based circuit board 5, and a single second circuit board 7 is electrically connected with the aluminum-based circuit board 5 through a plurality of conductive rings 12.

[0046] The specific structure and functions of the electric vehicle controller are as follows:

[0047] The electric vehicle controller comprises a base 1, a top cover 2, an aluminum-based circuit board 5, a first circuit board 6 and a second circuit board 7.

[0048] The top of the base 1 is provided with an opening, and the base 1 and the top cover 2 are connected to form an installation space inside, specifically, Figure 2 、 Figure 4 As shown in the figure, the inner side wall surface of the opening of the base 1 is provided with an inner protruding edge 102 in the circumferential direction, and the outer side wall surface of the top cover 2 is provided with an outer protruding edge 207 corresponding to the inner protruding edge 102 in the circumferential direction, the inner protruding edge 102 supports the outer protruding edge 207, so that the installation space is formed between the base 1 and the top cover 2;

[0049] The remaining components of the electric vehicle controller are arranged in the installation space.

[0050] The aluminum-based circuit board 5 is a power board, and the power device module, the three-phase power terminal 15 and the input power terminal 16 are attached thereto, the input power terminal 16 is used for electrical connection with an external driving power supply, the power device module is used for converting direct current output by the external driving power supply into three-phase alternating current, and the three-phase power terminal 15 is used for outputting the three-phase alternating current to a power consumption end of the electric vehicle;

[0051] In the utility model, the bottom end surface of the aluminum base circuit board 5 is pasted with the inner bottom wall surface of the base 1, so that the heat dissipation efficiency of the aluminum base circuit board 5 and the power device module can be improved; in addition, the aluminum base circuit board 5 has excellent heat dissipation performance, good mechanical performance and electrical performance, so that the performance of the electric vehicle controller can be further improved.

[0052] As shown in Figure 2 、 Figures 8-10 The aluminum base circuit board 5 is electrically connected with the three-phase power supply terminal 15 and the input power supply terminal 16 through a plurality of conductive sheets 18, that is, the three-phase power supply terminal 15 and the input power supply terminal 16 are attached to the aluminum base circuit board 5 through the corresponding conductive sheets 18.

[0053] As shown in Figures 9-10 The structure of a single conductive sheet 18 is as follows: a first conductive part 1801 and a second conductive part 1802 which is arranged in parallel with the first conductive part 1801, the second conductive part 1802 is in a planar shape, and the first conductive part 1801 and the second conductive part 1802 are connected in sequence through a first connecting part 1803 and a second connecting part 1804. The first conductive part 1801 is used for fitting with the wiring slot on the corresponding power supply terminal (including the three-phase power supply terminal 15 and the input power supply terminal 16), and the first conductive part 1801 can be provided in an L shape to improve the connection stability with the corresponding wiring slot; when the first conductive part 1801 is in an L shape, the second conductive part 1803 is parallel to the horizontal end surface thereof.

[0054] The second conductive part 1802 is used for attaching the aluminum base circuit board 5, and the second conductive part 1802 is in a planar shape; the first connecting part 1803 and the second connecting part 1804 are used for connecting the first conductive part 1801 and the second conductive part 1802, the first connecting part 1803 is arranged perpendicular to the end surface of the second conductive part 1802, and the second connecting part 1804 is arranged inclined relative to the end surface of the second conductive part 1802, so as to connect the first connecting part 1808 arranged in a vertical direction and the second conductive part 1802 arranged in a horizontal direction.

[0055] In the utility model, the first conductive part 1801, the second conductive part 1802, the first connecting part 1803 and the second connecting part 1804 are in an integrated structure.

[0056] In addition, the bottom of the three-phase power supply terminal 15 and the input power supply terminal 16 is provided with a plurality of supporting legs 17 for supporting the corresponding three-phase power supply terminal 15 and the input power supply terminal 16, so as to improve the structural stability.

[0057] In the utility model, the power device module adopts a bridge type inverter circuit based on an IGBT power tube to realize the conversion of direct current into alternating current.

[0058] A first circuit board 6 and two second circuit boards 7 are arranged above the aluminum-based circuit board 5, and the two second circuit boards 7 are arranged on both sides of the first circuit board 6, respectively.

[0059] The first circuit board 6 is a control board, on which a control device module is welded, the control device module includes a lead terminal 14 and a control chip assembly (not shown in the figure), and the control chip assembly transmits signals with external equipment through the lead terminal 14.

[0060] In addition, the first circuit board 6 is electrically connected with the aluminum-based circuit board 5 through a connector pin (not shown in the figure).

[0061] The first circuit board 6 is arranged apart from the aluminum-based circuit board 5 through the base 1, the top cover 2 and the three-phase power terminal 15; specifically, as shown in the figure, the base 1 is provided with a plurality of first support bosses 101, the three-phase power terminal 15 is provided with a plurality of second support bosses 1501, and each second support boss 1501 is provided with a positioning lug 1502. Figure 4

[0062] The top cover 2 is provided with a first pressing protrusion 201 and a second pressing protrusion 202, respectively.

[0063] In addition, the second pressing protrusion 202 is provided with a first positioning groove 206 corresponding to the positioning lug 1502, and the first circuit board 6 is provided with a second positioning groove 601 corresponding to the positioning lug 1502.

[0064] The first positioning groove 206, the second positioning groove 601 and the positioning lug 1502 are matched to position the placement position of the first circuit board 6 on the first support boss 101 and the second support boss 1501.

[0065] After the first circuit board 6 is placed on the first support boss 101 and the second support boss 1501, the top cover 2 is placed on the base 1 through the cooperation of the outer convex edge 207 and the inner convex edge 102, and the top cover 2 covers the opening of the base 1.

[0066] At this time, the first pressing protrusion 201 and the second pressing protrusion 202 on the top cover 2 press the edge of the first circuit board 6.

[0067] Subsequently, the top cover 2 is fixed on the base 1 by dispensing between the outer convex edge 207 and the inner convex edge 102, at this time, the first pressing protrusion 201 and the second pressing protrusion 202 press the first circuit board 6, thereby completing the installation of the first circuit board 6.

[0068] ​In addition, after the first pressing protrusions 201 and the second pressing protrusions 202 press the first circuit board 6, the first positioning groove 206 and the second positioning groove 601 cooperate with the positioning protrusions 1502 to also play a limiting role on the first circuit board 6, which can avoid displacement of the first circuit board 6 in the use process of the electric vehicle controller.

[0069] The single second circuit board 7 is arranged spaced apart from the aluminum-based circuit board 5 through a plurality of support assemblies. Specifically, as shown in Figure 2 、 Figure 4 The single support assembly includes an aluminum ring 9 welded on the aluminum-based circuit board 5, and the aluminum ring 9 is fitted with a first screw 10. The first screw 10 sequentially passes through the second circuit board 7, the aluminum ring 9, the aluminum-based circuit board 5, and the base 1 from top to bottom, thereby fastening the corresponding second circuit board 7 and the aluminum-based circuit board 5;

[0070] In addition, the first screw 10 is fitted with an insulating ring 11 on the outer circumferential surface, and the first screw 10 is electrically isolated from the second circuit board 7 through the insulating ring 11. At the same time, the first screw 10 is electrically isolated from the aluminum ring 9 through the insulating ring 11.

[0071] As shown in Figure 5 The open bottom wall surface of the base 1 is provided with a locking hole 104 corresponding to the first screw 10, and the first screw 10 is fastened and matched with the base 1 through the corresponding locking hole 104.

[0072] The single second circuit board 7 is electrically connected to the aluminum-based circuit board 5 through a conductive ring 12, and a second screw 13 sequentially passes through the corresponding second circuit board 7, the conductive ring 12, and the aluminum-based circuit board 5, thereby fixing and limiting the corresponding conductive ring 12.

[0073] The second circuit board 7 is a capacitor board, and a plurality of capacitors 8 are installed thereon. The capacitors 8 are used to maintain voltage stability when the electric vehicle controller is working, thereby improving the working stability.

[0074] As shown in Figure 6 The top cover 2 is provided with a first mounting hole 203, a second mounting hole 204, and a third mounting hole 205, respectively. The three-phase power terminal 15 is arranged in the first mounting hole 203, the input power terminal 16 is arranged in the second mounting hole 204, and the lead terminal 14 is arranged in the third mounting hole 205.

[0075] The top cover 2 is externally fitted with an upper cover 3, which simultaneously covers the first mounting hole 203 and the second mounting hole 204, thereby protecting the three-phase power terminal 15 and the input power terminal 16.

[0076] The lead terminal 14 extends to the outside of the installation space from the third mounting hole 205, thereby facilitating wiring with external leads.

[0077] The outer portion of the upper cover 2 is further provided with a waterproof and breathable cover 4 for covering the breathable hole.

[0078] In addition, as Figure 6 The second pressing boss 202 is arranged at the edge of the first mounting hole 203, facilitating cooperation with the second supporting boss 1501 on the three-phase power terminal 15 located in the first mounting hole 203.

[0079] The working process of the utility model is as follows:

[0080] The output end of the external driving power supply is electrically connected with the input power terminal 16;

[0081] The input end of the motor of the electric bicycle is electrically connected with the three-phase power terminal 15;

[0082] The electric vehicle controller converts the direct current output by the external driving power supply into three-phase alternating current, thereby driving the motor of the electric bicycle to work, and further controlling the action of the electric bicycle.

[0083] The above description is an explanation of the utility model, not a limitation of the utility model, the range defined by the utility model is referred to the claims, within the protection range of the utility model, any form of modification can be made.

Claims

1. An electric vehicle controller comprising a base (1) provided with an open top, characterised in that: The open end of the base (1) is equipped with a top cover (2), the bottom of the top cover (2) is respectively provided with a first pressing convex strip (201) and a second pressing convex strip (202), the bottom wall surface in the open end of the base (1) is attached with an aluminum-based circuit board (5), the top end surface of the aluminum-based circuit board (5) is respectively attached with a power device module, a three-phase power terminal (15) and an input power terminal (16), a plurality of first support bosses (101) arranged in an array are arranged on the side wall surface in the open end of the base (1), the first support bosses (101) correspond to the first pressing convex strip (201), a plurality of second support bosses (1501) are arranged on the side wall surface of the three-phase power terminal (15), the second support bosses (1501) correspond to the second pressing convex strip (202); a first positioning groove (206) corresponding to a positioning lug (1502) is formed in the second pressing convex strip (202), The top of the first support boss (101) and the second support boss (1501) is simultaneously placed with a first circuit board (6), and the first circuit board (6) is pressed by the first pressing convex strip (201) and the second pressing convex strip (202), so that the first circuit board (6) is arranged in an array above the aluminum-based circuit board (5); A control device module is arranged on the first circuit board (6), the first circuit board (6) is electrically connected with the aluminum-based circuit board (5) through a plug-in pin, second circuit boards (7) are arranged on both sides of the first circuit board (6), a plurality of capacitors (8) are arranged on a single second circuit board (7), a single second circuit board (7) is arranged in an array above the aluminum-based circuit board (5), and a single second circuit board (7) is electrically connected with the aluminum-based circuit board (5) through a plurality of conductive rings (12).

2. An electric vehicle controller as claimed in claim 1, characterized in that: An inner convex edge (102) is arranged on the inner side wall surface of the open end of the base (1) in a circumferential direction, an outer convex edge (207) corresponding to the inner convex edge (102) is arranged on the outer side wall surface of the top cover (2) in a circumferential direction, the inner convex edge (102) supports the outer convex edge (207), so that a mounting space is formed between the base (1) and the top cover (2).

3. The electric vehicle controller of claim 1, wherein: First, second and third mounting holes (203, 204, 205) are respectively formed in the top cover (2).

4. An electric vehicle controller as claimed in claim 3, wherein: The three-phase power terminal (15) is arranged in the first mounting hole (203).

5. The electric vehicle controller of claim 3, wherein: The input power terminal (16) is arranged in the second mounting hole (204).

6. An electric vehicle controller as recited in claim 1, wherein: The aluminum-based circuit board (5) is electrically connected with the three-phase power terminal (15) and the input power terminal (16) through a plurality of conductive sheets (18).

7. An electric vehicle controller as claimed in claim 6, characterised in that: The structure of a single conductive sheet (18) is that: a first conductive part (1801) is arranged, and a second conductive part (1802) is arranged in parallel with the first conductive part (1801) in an array, the second conductive part (1802) is in a planar shape, and the first conductive part (1801) and the second conductive part (1802) are sequentially connected through a first connecting part (1803) and a second connecting part (1804).

8. The electric vehicle controller of claim 1, wherein: A positioning protrusion (1502) is arranged on the single second supporting boss (1501).

9. An electric vehicle controller as claimed in claim 8, characterised in that: A second positioning groove (601) corresponding to the positioning protrusion (1502) is arranged on the first circuit board (6).

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