Integrated four-motor controller

Abstract

The utility model discloses an integrated four-motor controller, which comprises a case with a heat conduction effect and a control module arranged in the case, the control module comprises a control board, a bus capacitor and four motor driving boards, the bus capacitor is arranged in an inner cavity of the case, the control board is arranged above the bus capacitor, and the four motor driving boards are arranged on the control board. The two sides of the bus capacitor are each provided with two motor driving boards, one side of each motor driving board is electrically connected with the bus capacitor, the other side of each motor driving board is electrically connected with a motor three-phase line interface, and the lower surface of the case is provided with a cooling liquid flow channel. The four motor driving boards, the control board and the bus capacitor share one case to form an integrated structure, and compared with a discrete controller, the total size of the controller is reduced, the cost is effectively reduced, and light-weight, small-size and low-cost development of an automobile is facilitated; and meanwhile, the integrated controller reduces external wiring between discrete control, fault points are reduced, the size and the cost are saved, and the reliability of the product is improved at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor controller technical field, more specifically, it relates to an integrated four motor controller. BACKGROUND

[0002] With the further development of electric automobile technology, the demand of new energy electric automobile is more and more, and the demand of new energy technology in heavy truck field is also increasing.

[0003] At present, the heavy truck electric control on the market is generally single electric control form, that is, one-to-one form of motor and motor controller, which makes the components, chips and functional circuits repeat more, the hardware system becomes complex, the wire harness arrangement is inconvenient, the whole control unit is large in size and weight, which causes the problems of complex control system, low reliability, cost increase, low space utilization, inconvenient debugging and maintenance and the like. In addition, since each motor controller is independent of each other, the synchronous control requirement is high, and the cooperation of the motors is difficult to guarantee.

[0004] Therefore, a new scheme needs to be proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the insufficient of prior art, and provides an integrated four motor controller, four motor drive boards, control boards and bus capacitors share a machine case, forming an integrated structure, compared with discrete controller, the total volume of the controller is reduced, and the cost is effectively reduced; at the same time, the integrated controller reduces the external wiring between discrete controls, reduces the fault point, saves the volume and cost, and improves the reliability of the product.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] An integrated four motor controller, including a machine case with heat conduction effect and a control module arranged in the machine case, the control module includes a control board, a bus capacitor and four motor drive boards, the bus capacitor is installed in the inner cavity of the machine case, the control board is installed above the bus capacitor, two motor drive boards are arranged on both sides of the bus capacitor, one side of the motor drive board is electrically connected with the bus capacitor, the other side of the motor drive board is electrically connected with a motor three-phase line interface, a single-hole via connector is electrically connected with one end of the bus capacitor, and a cooling liquid flow channel is arranged on the lower surface of the machine case, the bus capacitor and the four motor drive boards are cooled by the cooling liquid.

[0008] Further, the cooling liquid flow channel comprises a cooling liquid flow channel one, a cooling liquid flow channel two and a cooling liquid flow channel three, the cooling liquid flow channel one, the cooling liquid flow channel two and the cooling liquid flow channel three are connected to form an S-shaped structure, the cooling liquid flow channel one and the cooling liquid flow channel three are provided with containing grooves recessed in the cooling liquid flow channel corresponding to the positions of the motor drive board, a plurality of convex columns in array distribution are arranged in the containing grooves, the convex columns are perpendicular to the cooling liquid flow channel, the cooling liquid flow channel two is provided with a plurality of convex edges parallel to the cabinet corresponding to the positions of the bus capacitor, and the convex edges are arranged along the direction of cooling liquid flow in the cooling liquid flow channel two.

[0009] Further, the flow channel caliber of the connecting position of the cooling liquid flow channel one and the cooling liquid flow channel two is smaller than the flow channel caliber of the cooling liquid flow channel one and the cooling liquid flow channel two, and the flow channel caliber of the connecting position of the cooling liquid flow channel three and the cooling liquid flow channel two is smaller than the flow channel caliber of the cooling liquid flow channel three and the cooling liquid flow channel two.

[0010] Further, the free end of the cooling liquid flow channel one and the free end of the cooling liquid flow channel three are communicated with a cooling liquid interface, and the two cooling liquid interfaces extend to the open end outside the cabinet.

[0011] Further, the control board is provided with a signal maintenance plug-in, a low-voltage plug-in and four rotary variable plug-ins electrically connected thereto.

[0012] Further, the upper surface of the bus capacitor is provided with an isolation plate, and the control board is arranged on the upper surface of the isolation plate.

[0013] Further, the open end of the cabinet is provided with a cabinet cover, and the cabinet cover is provided with a single-hole via connector hole, a cooling liquid interface hole, a signal maintenance plug-in hole and a low-voltage plug-in hole.

[0014] Further, the two sides of the cabinet are provided with a motor three-phase line interface hole and a rotary variable outlet hole, the motor three-phase line interface hole corresponds to the motor three-phase line interface, and the rotary variable outlet hole is located between the two motor three-phase line interface holes.

[0015] Further, the lower surface of the cabinet is provided with a cabinet back plate for covering the cooling liquid flow channel.

[0016] Further, the integrated four-motor controller has a square body structure, and the size is: 536mm*536mm*249mm.

[0017] The utility model discloses the beneficial effects are:

[0018] 1. In this utility model, a design is adopted in which four motor drive boards share a bus capacitor and a control board. The control board can control the operation of four motors simultaneously through the four motor drive boards, which improves the effect of synchronous control of the four motors and ensures the coordination of the four motors.

[0019] 2. In this utility model, the four motor drive boards, control boards and bus capacitors share a single chassis, forming an integrated structure. Compared with discrete controllers, this reduces the overall size of the controller, effectively lowers costs, and is conducive to the development of automobiles towards lightweighting, miniaturization and low cost. At the same time, the integrated controller reduces external wiring between discrete controllers, reduces failure points, and improves product reliability while saving volume and cost.

[0020] 3. In this utility model, the lower surface of the chassis is provided with a coolant flow channel, which can cool the bus capacitor and the four motor drive boards simultaneously by introducing coolant; at the same time, since the bus capacitor and the four motor drive boards share a cooling structure, the overall volume of the controller is reduced, effectively reducing the cost. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of one structure of the integrated four-motor controller in this embodiment;

[0022] Figure 2 This is a schematic diagram of one structure of the control module in this embodiment;

[0023] Figure 3 This is a schematic diagram of a connection structure between the bus capacitor and the motor drive board in this embodiment;

[0024] Figure 4 This is a schematic diagram of one structure of the chassis back panel in this embodiment;

[0025] Figure 5 This is a schematic diagram of a coolant flow channel in this embodiment;

[0026] Figure 6 This is a schematic diagram of one structure of the chassis cover in this embodiment;

[0027] Figure 7 This is a schematic diagram of the control board in this embodiment.

[0028] Reference numerals: 1. Chassis; 2. Control board; 3. Bus capacitor; 4. Motor drive board; 5. Motor three-phase line interface; 6. Single-hole through-hole connector; 7. Coolant flow channel; 7. Coolant flow channel one; 701. Coolant flow channel two; 702. Coolant flow channel three; 703. Receiving groove; 704. Protrusion; 705. Protrusion ridge; 706. Coolant interface; 707. Signal maintenance plug-in; 8. Low-voltage plug-in; 9. Resolver plug-in; 10. Isolation plate; 11. Chassis cover; 12. Single-hole through-hole connector hole; 13. Coolant interface hole; 14. Signal maintenance plug-in hole; 15. Low-voltage plug-in hole; 16. Motor three-phase line interface hole; 17. Resolver output hole; 18. Chassis back plate; 19. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example: An integrated four-motor controller, such as Figures 1-6 As shown, the system includes a chassis 1 and a control module housed within the chassis 1. The chassis 1 is a box-shaped structure with one open end and a receiving cavity. A chassis cover 12 is installed at the open end of the chassis 1. The control module includes a control board 2, a bus capacitor 3, and four motor drive boards 4. The bus capacitor 3 is installed inside the cavity of the chassis 1, that is, the bus capacitor 3 is bolted to the inner bottom wall of the chassis 1 and is located in the middle of the chassis 1. The lower surface of the bus capacitor 3 abuts against the inner bottom wall of the chassis 1. The control board 2 is installed above the bus capacitor 3. Two motor drive boards 4 are provided on both sides of the bus capacitor 3. Among the four motor drive boards 4, one side of each motor drive board 4 is electrically connected to the lead of the bus capacitor 3 through its lead wire, and the other side of each motor drive board 4 is electrically connected to the three-phase motor interface 5 through its lead wire. The lower surface of each motor drive board 4 abuts against the inner bottom wall of the chassis 1. One end of the bus capacitor 3 is electrically connected to a single-hole through-hole connector 6.

[0031] Among them, such as Figure 7As shown, the main control chip of the control board 2 adopts AURIX TriCore four-core microcontroller TC387 of Infineon, four independent 32-bit TriCore CPUs can work at 300MHz, and nine DSADC channels are used to decode the resolver signal; the isolation power supply adopts the scheme of LM3481+single isolation transformer, generating 6-way +16V and-7V isolation power supply for driving IGBT, and 1-way +15V power supply for resolver excitation signal power supply; the IGBT drive adopts an isolation drive chip with low-voltage side ASC function, which can enter the ASC state under the condition of low-voltage power failure or bus overvoltage, ensuring torque safety.

[0032] Further, as shown in Figure 2 、 Figure 3 , the signal maintenance plug-in 8, the low-voltage plug-in 9, and the four resolver plug-ins 10 are installed on the control board 2, the signal maintenance plug-in 8, the low-voltage plug-in 9, and the four resolver plug-ins 10 are electrically connected with the control board 2, and the four resolver plug-ins 10 are respectively located on both sides of the control board 2, corresponding to the motor drive board 4.

[0033] Further, the upper surface of the bus capacitor 3 is provided with an isolation plate 11, and the control board 2 is installed on the upper surface of the isolation plate 11. By setting the isolation plate 11, the short circuit between the bus capacitor 3 and the control board 2 is avoided.

[0034] Further, as shown in Figure 6 , the single-hole via connector hole 13, the signal maintenance plug-in hole 15, and the low-voltage plug-in hole 16 are provided on the case cover 12; the single-hole via connector hole 13 is provided to facilitate the placement of the single-hole via connector 6; the signal maintenance plug-in hole 15 is provided to facilitate the placement of the signal maintenance plug-in 8; and the low-voltage plug-in hole 16 is provided to facilitate the placement of the low-voltage plug-in 9.

[0035] Further, as shown in Figure 1 、 Figure 4 , the motor three-phase line interface hole 17 and the resolver outgoing line hole 18 are provided on both sides of the case 1, the motor three-phase line interface hole 17 corresponds to the motor three-phase line interface 5, that is, four motor three-phase line interface holes 17 are provided, so that the three-phase wire bundle of the motor can be inserted into the motor three-phase line interface 5 after passing through the motor three-phase line interface hole 17, realizing the connection between the motor and the motor drive board 4; the resolver outgoing line hole 18 is provided with two holes, corresponding to the resolver plug-in 10, and the resolver wire bundle is inserted into the resolver plug-in 10 after passing through the resolver outgoing line hole 18.

[0036] Further, the integrated four-motor controller has a square body structure, and its size is: 536mm*536mm*249mm.

[0037] In the integrated four-motor controller, the four motor drive boards 4 share one bus capacitor 3 and one control board 2, the control board 2 can control the operation of the four motors through the four motor drive boards 4 at the same time, which improves the synchronous control effect of the four motors and ensures the cooperation of the four motors. At the same time, the four motor drive boards 4, the control board 2 and the bus capacitor 3 share one case 1, forming an integrated structure. Compared with discrete controllers, the overall volume of the controller is reduced, the cost is effectively reduced, and the development of light weight, small size and low cost of automobiles is facilitated. At the same time, the integrated controller reduces the external wiring between discrete controls and reduces the failure points. While saving volume and cost, the reliability of the product is improved.

[0038] Further, the case 1 is made of heat-conducting material, such as metal material, so that the case 1 has a certain heat conduction effect and can conduct heat to the cooling liquid flow channel 7 for heat dissipation through the cooling liquid. Figure 5 As shown in the figure, the lower surface of the case 1 is provided with a cooling liquid flow channel 7, which can cool the bus capacitor 3 and the four motor drive boards 4 by flowing cooling liquid. At the same time, since the bus capacitor 3 and the four motor drive boards 4 share a cooling structure, the overall volume of the controller is reduced, and the cost is effectively reduced.

[0039] Specifically, the cooling liquid flow channel 7 includes a cooling liquid flow channel one 701, a cooling liquid flow channel two 702 and a cooling liquid flow channel three 703. The cooling liquid flow channel one 701, the cooling liquid flow channel two 702 and the cooling liquid flow channel three 703 are connected to form an S-shaped structure. The cooling liquid flow channel one 701 and the cooling liquid flow channel three 703 are provided with accommodation grooves 704 recessed in the cooling liquid flow channel 7 corresponding to the positions of the motor drive boards 4. The accommodation grooves 704 are provided with a plurality of protruding columns 705 arranged in an array. The protruding columns 705 are located on the heat dissipation fins of the IGBT of the motor drive board 4, and the protruding columns 705 are perpendicular to the cooling liquid flow channel 7. The cooling liquid flow channel two 702 is provided with a plurality of protruding edges 706 parallel to the case 1 corresponding to the position of the bus capacitor 3.

[0040] By arranging the cooling liquid flow channel one 701, the cooling liquid flow channel two 702 and the cooling liquid flow channel three 703 and connecting them to form an S-shaped structure, the cooling path of the cooling liquid is prolonged, and the cooling effect of the bus capacitor 3 and the motor drive board 4 is improved. At the same time, by arranging the protruding columns 705, the heat dissipation fins of the IGBT directly contact the cooling liquid, and the cooling effect is improved. By arranging the protruding edges 706, the contact area with the cooling liquid is increased, and the cooling effect of the bus capacitor 3 is improved.

[0041] Further, the flow channel diameter of the joint of the cooling liquid flow channel one 701 and the cooling liquid flow channel two 702 is smaller than the flow channel diameter of the cooling liquid flow channel one 701 and the cooling liquid flow channel two 702, the flow channel diameter of the joint of the cooling liquid flow channel three 703 and the cooling liquid flow channel two 702 is smaller than the flow channel diameter of the cooling liquid flow channel three 703 and the cooling liquid flow channel two 702; by the mutation of the flow channel diameter, the flow rate of the cooling liquid is changed, on the one hand, the cooling liquid can flow through the cooling liquid flow channel two 702 effectively and quickly, the cooling liquid can fully contact with the surface of the cooling liquid flow channel three 703, and the cooling effect is improved, on the other hand, the certain disturbance effect is formed by cooperating with the convex rib 706, and the cooling effect is improved.

[0042] Further, the free end of the cooling liquid flow channel one 701 and the free end of the cooling liquid flow channel three 703 are both communicated with a cooling liquid interface 707, the two cooling liquid interfaces 707 both extend to the outside of the open end of the case 1, and the cooling liquid interface holes 14 for placing the cooling liquid interfaces 707 are formed in the case cover 12.

[0043] Further, the lower surface of the case 1 is provided with a case back plate 19 for covering the cooling liquid flow channel 7.

[0044] The preferred embodiments are only used to illustrate the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. An integrated four-motor controller, comprising a cabinet (1) with heat conduction effect, and a control module arranged in the cabinet (1), characterized in that, The control module comprises a control board (2), a bus capacitor (3) and four motor drive boards (4), the bus capacitor (3) is installed in the inner cavity of the cabinet (1), the control board (2) is installed above the bus capacitor (3), two motor drive boards (4) are arranged on the two sides of the bus capacitor (3), one side of the motor drive board (4) is electrically connected with the bus capacitor (3), the other side of the motor drive board (4) is electrically connected with a motor three-phase line interface (5), one end of the bus capacitor (3) is electrically connected with a single-hole via connector (6), and the lower surface of the cabinet (1) is provided with a cooling liquid flow channel (7).

2. An integrated four-motor controller according to claim 1, wherein, The cooling liquid flow channel (7) comprises a cooling liquid flow channel one (701), a cooling liquid flow channel two (702) and a cooling liquid flow channel three (703), the cooling liquid flow channel one (701), the cooling liquid flow channel two (702) and the cooling liquid flow channel three (703) are connected to form an S-shaped structure, the cooling liquid flow channel one (701) and the cooling liquid flow channel three (703) are provided with containing grooves (704) recessed in the cooling liquid flow channel (7) at positions corresponding to the motor drive boards (4), a plurality of protruding columns (705) are arranged in the containing grooves (704) in an array, the protruding columns (705) are perpendicular to the cooling liquid flow channel (7), the cooling liquid flow channel two (702) is provided with a plurality of protruding edges (706) parallel to the cabinet (1) and integrated with the cabinet (1) at positions corresponding to the bus capacitor (3), and the protruding edges (706) are arranged along the flowing direction of the cooling liquid in the cooling liquid flow channel two (702).

3. An integrated four-motor controller according to claim 2, wherein, The flow channel diameter of the connecting part of the cooling liquid flow channel one (701) and the cooling liquid flow channel two (702) is smaller than the flow channel diameter of the cooling liquid flow channel one (701) and the cooling liquid flow channel two (702), and the flow channel diameter of the connecting part of the cooling liquid flow channel three (703) and the cooling liquid flow channel two (702) is smaller than the flow channel diameter of the cooling liquid flow channel three (703) and the cooling liquid flow channel two (702).

4. An integrated four-motor controller according to claim 2, wherein, The free end of the cooling liquid flow channel one (701) and the free end of the cooling liquid flow channel three (703) are both communicated with a cooling liquid interface (707), and the two cooling liquid interfaces (707) both extend to the outside of the open end of the cabinet (1).

5. An integrated four-motor controller according to claim 1, wherein, The control board (2) is installed with a signal maintenance plug-in (8), a low-voltage plug-in (9) and four rotary variable plug-ins (10) electrically connected therewith.

6. An integrated four-motor controller according to claim 1, wherein, The upper surface of the bus capacitor (3) is installed with an isolation plate (11), and the control board (2) is installed on the upper surface of the isolation plate (11).

7. An integrated four-motor controller according to claim 1, wherein, The open end of the cabinet (1) is installed with a cabinet cover (12), and the cabinet cover (12) is provided with a single-hole via connector hole (13), a cooling liquid interface hole (14), a signal maintenance plug-in hole (15) and a low-voltage plug-in hole (16).

8. An integrated four-motor controller according to claim 1, wherein, The motor three-phase line interface hole (17) corresponds to the motor three-phase line interface (5), and the rotary variable out line hole (18) is located between the two motor three-phase line interface holes (17).

9. An integrated four-motor controller according to claim 1, wherein, The lower surface of the cabinet (1) is provided with a cabinet back plate (19) for covering the cooling liquid flow channel (7).

10. The integrated four-motor controller of claim 1, wherein, The integrated four-motor controller has a square body structure, and has a size of 536 mm in length*536 mm in width*249 mm in height.

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