Electric vehicle controller

Abstract

The embodiment of the utility model provides an electric vehicle controller. The first shell is provided with an opening at one end; the control panel is fixed at the opening end of the first shell; the second shell covers the opening end of the first shell, and an accommodating space is defined by the second shell and the first shell; the control panel is accommodated in the accommodating space; the connection terminal is electrically connected with the circuit element; at least one part of the second shell is provided with a notch, so that the connecting terminal is exposed out of the accommodating space; a housing sealing member disposed between the first housing and the second housing; the terminal sealing component is arranged at the notch of the second shell; wherein a heat dissipation structure is formed on at least one part of the outer surface of the first shell. According to the electric vehicle controller, the heat dissipation structure is arranged on one part of the shell, so that heat accumulated in the accommodating space can be discharged, the heat in the electric vehicle controller is reduced, the reliability of the electric vehicle controller is improved, and the reject ratio of the electric vehicle controller is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle controller. Background Art

[0002] An electric vehicle (such as an electric tricycle or an electric two-wheel vehicle) is a means of transportation that is powered by a power supply module (such as a battery pack or a battery) and driven by a drive module (such as a motor).

[0003] Due to its strong applicability, flexibility, simple maintenance, convenient repair, low price and other advantages, and the ability to flexibly travel through narrow roads, it is widely used in short-distance transportation fields such as families, urban and rural areas, individual rentals, factories, mining areas, sanitation, and community cleaning. Among them, the electric vehicle controller, as an important component of electric vehicles, is a component that is the focus of attention in the field of electric vehicles.

[0004] However, the existing electric vehicle controllers still have many defects and cannot meet the needs of practical applications. For example, the electric vehicle controller has a low waterproof level and a large size, and needs to be equipped with an independent radiator. The reliability of the radiator connected by screws is poor. The heat generated inside the electric vehicle controller is concentrated, which easily leads to a high temperature of the electric vehicle controller, making the reliability of the traditional electric vehicle controller poor and the defect rate high. In addition, the connection wires between the electric vehicle controller and other external devices are connected by welding, which leads to a large number of welding points. During the operation of the electric vehicle, the welding points are easy to fall off, resulting in a high failure rate. Utility Model Content

[0005] The electric vehicle controller provided by the utility model aims to solve at least part of the defects of the existing electric vehicle controller.

[0006] The utility model provides an electric vehicle controller. The electric vehicle controller comprises: a first shell; one end of the first shell is open; a control board; the control board is fixed at the open end of the first shell; a plurality of circuit elements are mounted on the control board; a second shell; the second shell cover is arranged at the open end of the first shell, and is enclosed with the first shell to form a receiving space; the control board is received in the receiving space; a connecting terminal; the connecting terminal is electrically connected to the circuit element; at least a portion of the second shell is provided with a notch so that the connecting terminal is exposed outside the receiving space; a shell sealing component; the shell sealing component is arranged between the first shell and the second shell, and is used to fill the gap between the first shell and the second shell; a terminal sealing component; the terminal sealing component is arranged at the notch of the second shell, and is used to fill the gap between the connecting terminal and the second shell; wherein at least a portion of the outer surface of the first shell forms a heat dissipation structure.

[0007] In some embodiments, the connecting terminal includes: a power terminal and a communication terminal; wherein the power terminal is used to receive electrical energy from an external power source; the control signal terminal is used to receive a control signal; the power terminal and the communication terminal are respectively located at two ends of the second shell in the axial direction, away from each other.

[0008] In some embodiments, a sealing groove is formed at the connection between the first shell and the second shell; the sealing groove extends along the circumference of the first shell and surrounds the first shell; wherein the shell sealing component is an elastic waterproof ring; the elastic waterproof ring is arranged around the outer peripheral edge of the control board and is stuck in the sealing groove.

[0009] In some embodiments, the heat dissipation structure includes: a plurality of heat dissipation teeth; the heat dissipation teeth are located between the first shell and the bottom surface of the shell, and protrude from the outer surface of the first shell; wherein the bottom surface of the first shell is opposite to the opening end of the first shell.

[0010] In some embodiments, a first boss, a second boss and a plurality of support columns are provided inside the first shell; wherein the first boss and the second boss are respectively located on the two side edges of the first shell parallel to the axial direction; the plurality of support columns are located at the two ends of the first shell that are away from each other in the axial direction; the control board is fixed to the first shell through the first boss, the second boss and the support columns.

[0011] In some embodiments, the control board includes: a pair of first substrates and a second substrate; the circuit elements include: a plurality of switch tubes; wherein the plurality of switch tubes are respectively assembled on a pair of the first substrates; a pair of the first substrates are respectively fixed to the first shell through the first boss and the second boss; the first substrate is an insulating heat-conducting structure; the second substrate is fixed to the first shell through the support column, and the power terminal and the communication terminal are respectively arranged at two ends of the second substrate away from each other in the axial direction.

[0012] In some embodiments, the circuit element further includes: a metal connector; wherein the metal connector is disposed in a gap between the second substrate and the first housing, and is used to establish an electrical connection between a plurality of the switch tubes.

[0013] In some embodiments, the circuit element further includes: a bus bar; wherein the bus bar is disposed on the second substrate and is used to establish an electrical connection with the power connection terminal.

[0014] In some embodiments, the second substrate is provided with a plurality of via holes corresponding to the support columns; the terminal sealing component includes: a plurality of silicone rings; a plurality of power terminal notches are opened on the second shell; the power terminal includes: a plurality of bases; the base is provided with connecting through holes; the opening position of the connecting through holes corresponds to the through holes; a plurality of connecting columns; one of the connecting columns protrudes from the surface of one of the bases, passes through one of the power terminal notches and is exposed outside the receiving space; a plurality of first threaded fasteners; one of the first threaded fasteners passes through one of the connecting through holes and one of the via holes in turn and is connected to the corresponding support column, so that one of the bases is fixed on the second substrate; wherein, one of the silicone rings is sleeved on one of the connecting columns to fill the gap between the connecting column and the power terminal notch.

[0015] In some embodiments, a communication terminal notch is opened on the second shell; the terminal sealing component includes: a sealing pad; the communication terminal includes: a connection base; the connection base is fixed on the second substrate; a plurality of connection pins are arranged on the connection base; the connection pins are arranged on the surface protruding from the connection base, pass through the communication terminal notch and are exposed outside the accommodation space; wherein the sealing pad is clamped between the second shell and the second substrate, and covered on the connection base; a plurality of the connection pins pass through the sealing hole set on the sealing pad.

[0016] At least one beneficial effect of the electric vehicle controller provided by the embodiment of the utility model is that the electric vehicle controller is provided with a heat dissipation structure on a part of its housing, so that the heat accumulated inside the receiving space can be discharged, thereby reducing the heat inside the electric vehicle controller, improving the reliability of the electric vehicle controller and reducing the defective rate of the electric vehicle controller. Moreover, the entire heat dissipation structure is an integrated structure, which effectively improves the assembly reliability of the radiator. In addition, the use of sealing components can achieve better waterproof and dustproof performance, ensuring the operational reliability of the electric vehicle controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent the same elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0018] Figure 1 A three-dimensional exploded view of an electric vehicle controller provided by an embodiment of the utility model;

[0019] Figure 2 A first structural stereogram of an electric vehicle controller provided by an embodiment of the utility model;

[0020] Figure 3 A second structural stereogram of an electric vehicle controller provided by an embodiment of the utility model;

[0021] Figure 4 The electric vehicle controller provided by the embodiment of the utility model does not include a structural stereogram of the second shell.

[0022] Figure numerals: 100, electric vehicle controller; 1, first housing; 101, first boss; 102, second boss; 103, support column; 2, second housing; 201, power supply terminal notch; 202, communication terminal notch; 1001, sealing groove; 3, heat dissipation structure; 31, heat dissipation tooth; 4, control board; 41, second substrate; 42, first field effect transistor; 43, second field effect transistor; 411, via; 5, connection terminal; 51, connection board; 52, bus bar; 53, communication terminal; 54, electric Source terminal; 511, first connection end; 512, second connection end; 531, connection base; 532, connection pin; 541, base; 542, connection column; 543, first threaded fastener; 544, terminal connector; 545, insulating gasket; 5401, second threaded fastener; 5411, connection through hole; 5441, connection part; 5442, contact part; 6, sealing component; 61, elastic waterproof ring; 62, sealing rubber pad; 63, silicone ring; 621, sealing hole; 7, first substrate. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope and application of the present invention.

[0024] It should be noted that, unless otherwise clearly specified and limited, the terms "protruding from", "departing from each other", "towards", "interpenetrating each other", etc. used in this specification to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms such as "installation", "fitting", "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; "fixation" can be bolted, snap-fitted or glued; the terms "first", "second", "third" and "fourth" are used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features; "multiple" or "several" means two or more; in addition, "and / or" includes any and all combinations of one or more related listed items; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In this application, "electric vehicle controller" refers to a general term for integrated components that can be used to control the output power of an electric vehicle. Its specific shape, structure, size, etc. can be set according to the needs of actual conditions and are not specifically limited here.

[0027] Figure 1 A three-dimensional exploded view of an electric vehicle controller provided by an embodiment of the utility model. Figure 2 This is a first structural stereogram of an electric vehicle controller provided in an embodiment of the utility model. Figure 3 A second structural stereogram of an electric vehicle controller provided in an embodiment of the utility model. Figure 4 The electric vehicle controller provided by the embodiment of the utility model does not include a structural stereogram of the second shell.

[0028] See also Figure 1 to Figure 4 The electric vehicle controller 100 includes: a first shell 1, a second shell 2, a heat dissipation structure 3, a control board 4, a connecting terminal 5 and a sealing component 6.

[0029] The first shell 1 and the second shell 2 can both be housing components with one end open. The second shell 2 can cover the open end of the first shell 1, so as to enclose each other to form a receiving space.

[0030] Specifically, the joint edge of the first shell 1 and the second shell 2 may be provided with a sealing groove 1001 extending in the circumferential direction. One of the components of the sealing component 6, the "shell sealing component", may be accommodated in the sealing groove 1001 to fill the gap between the first shell 1 and the second shell 2, thereby improving the waterproof sealing performance of the connection between the two.

[0031] The control board 4 is fixed to the open end of the first housing 1, so that the control board 4 is contained in a sealed containing space. The control board 4 is equipped with a number of circuit elements, which can perform corresponding operations on electrical signals, thereby realizing control of the driving device (e.g., a three-phase motor) of the electric vehicle.

[0032] In some embodiments, the first shell 1 and the second shell 2 are detachably connected, the control board 4 and the first shell 1 are detachably connected, and the connecting terminal 5 and the control board 4 can also be detachably connected to facilitate assembly and disassembly maintenance and enhance the overall user experience.

[0033] The heat dissipation structure 3 is formed on the outer surface of the first housing 1 and is an integrated structure with the first housing 1. Specifically, the heat dissipation structure 3 can be composed of a plurality of heat dissipation teeth 31. These heat dissipation teeth 31 are located on the bottom surface of the first housing and protrude from the bottom surface of the housing. By increasing the surface area per unit volume, a stronger natural air cooling heat dissipation effect is achieved.

[0034] Preferably, the first shell 1 and the second shell 2 are both made of heat dissipation material with high heat dissipation performance, so that the heat dissipation structure 3 can conduct heat evenly and discharge the heat in the accommodation space in time, so that the electric vehicle controller 100 has the advantages of uniform heat dissipation, low energy consumption and long service life.

[0035] In some embodiments, the connection terminal 5 may include: a power terminal 54 and a communication terminal 53 .

[0036] The power terminal 54 is a terminal for outputting a driving voltage, and the communication terminal 53 is a terminal for receiving a control signal. The power terminal 54 and the communication terminal 53 may be located at two ends of the second housing in the axial direction and away from each other.

[0037] By setting the communication terminal 53 and the power terminal 54 separately, it can help to separate the power supply end on the high-voltage side and the control signal end on the low-voltage side from each other, thereby improving the performance in actual use.

[0038] Correspondingly, a communication terminal notch 202 and a plurality of power terminal notches 201 penetrating the accommodating space are respectively provided at two ends of the second shell 2 which are away from each other, so that the two connection terminals can be exposed to the outside to establish electrical connection with external devices.

[0039] In some embodiments, the housing sealing component may be an elastic waterproof ring 61. The elastic waterproof ring 61 is disposed around the outer peripheral edge of the control board 4 and is locked in the sealing groove.

[0040] Furthermore, combined with Figure 1 , Figure 2 and Figure 4 It can be seen that the sealing component 6 can also include: a sealing rubber pad 62 for sealing the communication terminal and a plurality of silicone rings 63 for sealing the power terminal.

[0041] The silicone ring 63 is arranged at the power supply end gap 201, and the sealing rubber pad 62 is arranged at the communication end gap 202, so as to limit the interconnection between the outside of the accommodation space and the inside of the accommodation space.

[0042] In the present application, a waterproof ring 61 is used to form a sealed joint between the first shell 1 and the second shell 2, a sealing pad 62 is used to seal the communication end gap 202, and a silicone ring 63 is used to seal the power end gap 201. The sealing method can isolate the inside and outside of the receiving space from each other, thereby effectively improving the waterproof performance of the electric vehicle controller 100 and reducing the damage of the external environment to the control board 4 contained in the receiving space.

[0043] Preferably, the waterproof and dustproof level of the electric vehicle controller 100 can reach IP67. The first number in IP67 represents the solid protection level (i.e., dustproof capability), and the second number represents the liquid protection level (i.e., waterproof capability); there are six solid protection levels, 1 to 6; when the solid protection level is 6, it means "sealed and dustproof, and can completely prevent dust from entering"; in addition, there are eight liquid protection levels, 1 to 8, and when the liquid protection level is 7, it means "temporary immersion test, it can be immersed in a specific depth for a certain period of time (usually 30 minutes) without affecting normal operation".

[0044] In some embodiments, Figure 1 and Figure 4 As shown, a first boss 101 and a second boss 102 may be provided inside the first housing 1. The first boss 101 and the second boss 102 are respectively located at two side edges of the first housing parallel to the axis direction.

[0045] Furthermore, a plurality of support columns 103 are provided in the first housing 1, which protrude from the bottom surface of the first housing 1 and are located at two ends of the first housing 1 that are away from each other in the axial direction. The control board 4 is fixed to the first housing through the first boss 101, the second boss 102 and the support columns 103.

[0046] Specifically, the control board 4 may include a pair of first substrates 7 and a second substrate 41 .

[0047] The first substrate 7 carries a switch tube. In this embodiment, for the convenience of description, a pair of switch tubes carried on the first substrate 7 are respectively referred to as a "first field effect tube 42" and a "second field effect tube 43".

[0048] The first substrate 7 is a layered structure made of insulating heat-conducting material. The first field effect tube 42 is fixed on the first boss 101 through one of the first substrates 7. The second field effect tube 43 is fixed on the second boss 102 through another first substrate 7. The heat dissipation effect and electrical insulation performance of the switch tube can be ensured by the insulating heat-conducting first substrate.

[0049] The second substrate 41 may be a PCB (Printed Circuit Board) integrated with electronic components and connection circuits. The first field effect transistor 42 and the second field effect transistor 43 are both electrically connected to the PCB 41 to form a complete control circuit.

[0050] In some embodiments, in combination Figure 1 and Figure 4 It can be seen that the PCB board 41 has a first surface and a second surface opposite to each other. The communication terminal 53 and a plurality of power terminals 54 are respectively arranged at two ends of the second substrate 41 .

[0051] The PCB board 41 may also be provided with a connection plate 51 and a bus bar 52. The connection plate 51 is located on the second surface of the PCB board 41, and the bus bar 52 is located on the first surface of the PCB board 41. The two cooperate with each other to form a three-phase line (i.e., three power lines U, V and W connected to the three-phase motor) inside the electric vehicle controller.

[0052] One end of the communication terminal 53 abuts against the first surface of the PCB board 41 ; the other end of the communication terminal 53 extends toward the outside of the receiving space and passes through the communication terminal notch 202 .

[0053] It should be noted that one end of the power terminal 54 is detachably disposed on the first surface of the PCB board 41 ; the other end of the power terminal 54 extends toward the outside of the receiving space and passes through the power terminal notch 201 .

[0054] The above-mentioned connection board 51, bus 52, power terminal 54 and communication terminal 53 are used to realize the mutual connection between the corresponding components, which can reduce the use of internal wires of the electric vehicle controller 100, thereby reducing the failure rate of the electric vehicle due to vibration during operation.

[0055] For details, please refer to Figure 1 and Figure 4 The connecting plate 51 is provided with a plurality of first connecting ends 511 and a plurality of second connecting ends 512 at two ends which are away from each other.

[0056] It can be understood that the first connection end 511 is connected to the first field effect transistor 42 correspondingly, and the second connection end 512 is connected to the second field effect transistor 43 correspondingly.

[0057] Specifically, the first field effect transistors 42 corresponding to the first connection ends 511 are connected in parallel, and the second field effect transistors 43 corresponding to the second connection ends 512 are connected in parallel; the first field effect transistors 42 and the second field effect transistors 43 are connected in series via the connecting plate 51 .

[0058] Exemplarily, to adapt to the control of a three-phase motor, the number of the first field effect transistors 42 can be nine, and the number of the second field effect transistors 43 can also be nine; the number of the first connection ends 511 of a connecting plate can be three, and the number of the second connection ends 512 of a connecting plate can also be three; every three first field effect transistors 42 are divided into a group and connected to the three first connection ends 511 of a connecting plate 51 to form a parallel connection; every three second field effect transistors 43 are divided into a group and connected to the three second connection ends 512 of a connecting plate 51 to form a parallel connection; wherein the first field effect transistors 42 and the second field effect transistors 43 can be divided into three groups, and each group of first field effect transistors 42 and each group of second field effect transistors 43 can be connected through a connecting plate to form a series connection; a three-phase series connection is formed between the three connecting plates.

[0059] In some embodiments, Figure 1 to Figure 4 As shown, a plurality of through holes 411 corresponding to the support pillars 103 are provided on the PCB board 41 ; the power terminal 54 includes: a base 541 , a connecting pillar 542 and a first threaded fastener 543 .

[0060] The base 541 is provided with a connecting through hole 5411, and the opening position of the connecting through hole 5411 corresponds to the through hole 411. The connecting column 542 protrudes from the surface of the base 541 and passes through the power terminal notch 201.

[0061] During the assembly process, the first threaded fastener 543 passes through the connecting through hole 5411 and the via hole 411 in sequence and is connected to the supporting column 103 , so that the base 541 is detachably disposed on the PCB board 41 .

[0062] Accordingly, the connection cable of the external device (three-phase motor) can use the terminal connector 544 as shown in the figure to establish a stable and reliable electrical connection with the power terminal.

[0063] The terminal connector 544 is provided with a connecting portion 5441 and a contact portion 5442 ; the contact portion 5442 is detachably connected to the connecting column 542 via a second threaded fastener 5401 ; and the connecting portion 5441 is in a ring shape.

[0064] In some embodiments, in combination Figure 1 to Figure 4 It can be seen that the power terminal 54 further includes: a plurality of insulating washers 545. The insulating washers 545 are arranged between the contact portion 5442 of the terminal connector 544 and the second threaded fastener.

[0065] In some embodiments, please refer to Figure 1 to Figure 4 The communication terminal 53 includes: a connection base 531 and a plurality of connection pins 532 .

[0066] The connection base 531 is fixed on the surface of the PCB board 41. A plurality of connection pins 532 are arranged on the connection base 531; the connection pins 532 are arranged on the surface protruding from the connection base 531 and pass through the communication terminal notch 202.

[0067] Specifically, Figure 1 to Figure 4 As shown, the silicone ring 63 is disposed in the power terminal notch 201 of the second housing 2 and sleeved on the connecting column 542 to fill the gap between the outer surface of the connecting column 542 and the inner surface of the power terminal notch 201 .

[0068] It can be understood that the sealing pad 62 has a third surface and a fourth surface that are opposite to each other; the third surface of the sealing pad 62 abuts against the surface of the connecting base 531, and the fourth surface of the sealing pad 62 abuts against the inner surface of the second shell 2; the setting position of the sealing pad 62 corresponds to the communication end notch 202 of the second shell 2.

[0069] It should be noted that the sealing rubber pad 62 is provided with a plurality of sealing holes 621 penetrating the third surface and the fourth surface, and a plurality of connecting pins 532 pass through the sealing holes 621 .

[0070] Based on the electric vehicle controller provided in the above embodiment, the present utility model embodiment further provides an electric vehicle, which comprises: the electric vehicle controller, an electric vehicle body, a drive module and a signal processor.

[0071] Among them, the electric vehicle controller, the motor and the signal processor are all arranged on the electric vehicle body.

[0072] The motor is provided with a connecting wire, and is electrically connected to the power terminal of the electric vehicle controller through the connecting wire. The communication terminal of the electric vehicle controller is connected to the signal processor, which is used to manage the orderly operation (cutoff / conduction) of the switch tube in the electric vehicle controller; and then through the orderly operation of the switch tube, the motor outputs the traction force to drive the main body of the electric vehicle to move.

[0073] In the embodiment of the present application, the electric vehicle may be an electric tricycle or an electric two-wheeler.

[0074] In summary, the electric vehicle controller and electric vehicle provided by the embodiment of the utility model, the radiator and the first shell are an integrally formed structure, so as to avoid the use of screws to connect the radiator and the first shell, thereby effectively improving the assembly reliability of the radiator; and the addition of the radiator can also discharge the heat accumulated inside the receiving space, thereby reducing the heat inside the electric vehicle controller, improving the reliability of the electric vehicle controller and reducing the defective rate of the electric vehicle controller; in addition, the control component and at least a part of the connecting component are accommodated in the receiving space, which can also reduce the overall volume of the electric vehicle controller, thereby reducing the manufacturing cost; the connecting component and the control component are connected to form a non-outlet connection mode, which can reduce the welding points, thereby effectively reducing the failure rate of the electric vehicle controller caused by the falling of the welding points; the electric vehicle controller also has good waterproof and dustproof performance. Therefore, the electric vehicle controller provided by the embodiment of the utility model has a certain novelty compared with the traditional electric vehicle controller.

[0075] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An electric vehicle controller, characterized in that: include: A first shell; one end of the first shell is open; A control board; the control board is fixed to the opening end of the first housing; a plurality of circuit elements are mounted on the control board; A second shell; the second shell cover is arranged at the open end of the first shell, and is enclosed with the first shell to form a receiving space; the control panel is received in the receiving space; A connecting terminal; the connecting terminal is electrically connected to the circuit element; at least a portion of the second housing is provided with a notch so that the connecting terminal is exposed outside the receiving space; A housing sealing member; the housing sealing member is disposed between the first housing and the second housing, and is used to fill a gap between the first housing and the second housing; Terminal sealing component; the terminal sealing component is arranged at the notch of the second housing, and is used to fill the gap between the connecting terminal and the second housing; Wherein, at least a portion of the outer surface of the first shell forms a heat dissipation structure.

2. The electric vehicle controller according to claim 1, characterized in that: The connection terminals include: a power terminal and a communication terminal; Wherein, the power terminal is used to output a driving voltage; the communication terminal is used to receive a control signal; The power terminal and the communication terminal are respectively located at two ends of the second shell in the axial direction and are far away from each other.

3. The electric vehicle controller according to claim 1, characterized in that: A sealing groove is formed at the connection between the first shell and the second shell; the sealing groove extends along the circumference of the first shell and surrounds the first shell; Wherein, the shell sealing component is an elastic waterproof ring; the elastic waterproof ring is arranged around the outer peripheral edge of the control board and is locked in the sealing groove.

4. The electric vehicle controller according to claim 1, characterized in that: The heat dissipation structure comprises: a plurality of heat dissipation teeth; the heat dissipation teeth are located on the bottom surface of the first shell; Wherein, the shell bottom surface of the first shell is opposite to the opening end of the first shell.

5. The electric vehicle controller according to claim 2, characterized in that: A first boss, a second boss and a plurality of support columns are arranged inside the first shell; Wherein, the first boss and the second boss are respectively located at two side edges of the first shell parallel to the axial direction; a plurality of the support columns are located at two ends of the first shell that are away from each other in the axial direction; The control board is fixed on the first shell through the first boss, the second boss and the support column.

6. The electric vehicle controller according to claim 5, characterized in that: The control board includes: a pair of first substrates and a second substrate; the circuit elements include: a plurality of switch tubes; Wherein, a plurality of the switch tubes are respectively assembled on a pair of the first substrates; the pair of the first substrates are respectively fixed on the first housing through the first boss and the second boss; the first substrate is an insulating heat-conducting structure; The second substrate is fixed to the first housing through the supporting column, and the power terminal and the communication terminal are respectively arranged at two ends of the second substrate that are away from each other in the axial direction.

7. The electric vehicle controller according to claim 6, characterized in that: The circuit element further comprises: a connection board; The connecting plate is arranged in the gap between the second substrate and the first shell, and is used to establish electrical connection between a plurality of the switching tubes.

8. The electric vehicle controller according to claim 7, characterized in that: The circuit element further comprises: a bus bar; The busbar is arranged on the first surface of the second substrate and cooperates with the connector to form an electrical connection between the plurality of switch tubes and the power terminal; The second substrate has a first surface and a second surface which are opposite to each other; and the connecting plate is located on the second surface of the second substrate.

9. The electric vehicle controller according to claim 6, characterized in that: The second substrate is provided with a plurality of vias corresponding to the support pillars; the terminal sealing component includes: a plurality of silicone rings; the second housing is provided with a plurality of power supply terminal notches; The power terminal comprises: A plurality of bases; the bases are provided with connecting through holes; the opening positions of the connecting through holes correspond to the via holes; A plurality of connecting posts; one of the connecting posts protrudes from a surface of the base, passes through a power supply terminal notch and is exposed outside the receiving space; A plurality of first threaded fasteners; one of the first threaded fasteners sequentially passes through one of the connecting through holes and one of the via holes to be connected to a corresponding support column, so that one of the bases is fixed on the second substrate; Wherein, one of the silicone rings is arranged on one of the connecting pillars to fill the gap between the connecting pillar and the notch of the power supply terminal.

10. The electric vehicle controller according to claim 6, characterized in that: The second shell is provided with a communication terminal notch; The terminal sealing component comprises: a sealing rubber pad; The communication terminal comprises: A connecting base; the connecting base is fixed on the second substrate; A plurality of connecting pins are arranged on the connecting base; the connecting pins are arranged on the surface protruding from the connecting base, pass through the communication terminal notch and are exposed outside the receiving space; The sealing rubber pad is clamped between the second shell and the second substrate, and is covered on the connection base; a plurality of the connection pins pass through the sealing holes provided on the sealing rubber pad.

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