Capacitor, power module, electric control system and vehicle

Abstract

A capacitor, a power module, an electric control system and a vehicle, the capacitor comprises a capacitor body, and a first electrode and a second electrode with opposite polarities, the first electrode and the second electrode are connected to the same end of the capacitor body in a first direction, the first electrode and the second electrode are stacked and insulated in a second direction, the first direction intersects with the second direction, and the second direction intersects with the first direction. Therefore, magnetic fields generated by the first electrode and the second electrode are mutually offset, and stray inductance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor controllers, and in particular to a capacitor, a power module, an electric control system and a vehicle. Background Art

[0002] The main function of the motor controller is to convert the DC power input by the capacitor into AC power through the power module to drive the motor. Therefore, the current transmission link between the capacitor and the power module becomes an important breakthrough point for improving efficiency and reliability.

[0003] However, in the prior art, the connection between the capacitor and the power module has a high system stray inductance, which leads to increased system circuit losses and the risk of electronic device breakdown. Utility Model Content

[0004] The utility model aims to provide a capacitor, a power module, an electric control system and a vehicle, which solve the problems in the prior art that the positive and negative electrodes of the capacitor terminal copper bars are arranged in parallel and fixed by screws, resulting in high system stray inductance, impaired current carrying capacity and unreliable connection.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a capacitor, comprising: a capacitor body; a first electrode and a second electrode with opposite polarities, wherein the first electrode and the second electrode are connected to the same end of the capacitor body in a first direction, the first electrode and the second electrode are stacked and insulated in a second direction, and the first direction intersects with the second direction.

[0007] In one embodiment, in the second direction, the first electrode is disposed on an upper side of the second electrode.

[0008] In one embodiment, along the first direction, a first connection end is formed at one end of the first electrode away from the capacitor body, a first notch is formed at the first connection end, and at least a portion of the second electrode is exposed to the first notch.

[0009] In one embodiment, the first notch is opened in the middle of the first connection end in a third direction to form two first sub-connection ends, and the third direction intersects both the first direction and the second direction.

[0010] In one embodiment, along the first direction, a second connection end is formed at one end of the second electrode away from the capacitor body, and a second notch and a third notch are opened at the second connection end. The second notch and the third notch are spaced apart in the third direction to form a second sub-connection end.

[0011] In one embodiment, the second sub-connection end is exposed to the first notch, wherein one of the first sub-connection ends is exposed to the second notch, and another of the first sub-connection ends is exposed to the third notch.

[0012] In one embodiment, the first electrode is further provided with a first groove, and the second electrode is further provided with a second groove corresponding to the position of the first groove, so as to form a plurality of output areas on the capacitor, each of the output areas including the first connection end and the second connection end.

[0013] In one embodiment, the first groove extends along the first direction and connects the end surface of the first electrode away from the capacitor body, and the second groove extends along the first direction and connects the end surface of the second electrode away from the capacitor body.

[0014] In one embodiment, the capacitor further includes an insulating layer, and the insulating layer is disposed between the first electrode and the second electrode.

[0015] In one embodiment, the capacitor includes multiple output areas, each of the output areas includes a first surface and a second surface opposite to each other in the second direction, the first surface is provided with a first positive electrode region and a first negative electrode region, a first baffle is provided at the junction of the first positive electrode region and the first negative electrode region, and the first baffle is suitable for isolating the first positive electrode region and the first negative electrode region; the second surface is provided with a second positive electrode region and a second negative electrode region, a second baffle is provided at the junction of the second positive electrode region and the second negative electrode region, and the second baffle is suitable for isolating the second positive electrode region and the second negative electrode region.

[0016] In one embodiment, the first baffle protrudes from the first surface, and the second baffle protrudes from the second surface.

[0017] In one embodiment, the second baffle is at least partially arranged across any two adjacent output areas.

[0018] In one embodiment, the first sub-connection end is provided with a first positioning hole, and / or the second sub-connection end is provided with a second positioning hole.

[0019] In one embodiment, the first electrode is provided with a first limiting groove at both ends in the third direction, the second electrode is provided with a second limiting groove at both ends in the third direction, the first limiting groove and the second limiting groove are correspondingly arranged in the second direction, and the first limiting groove and the second limiting groove are both suitable for cooperating and connecting with a support member; the third direction intersects with both the first direction and the second direction.

[0020] In a second aspect, the utility model also provides a power module suitable for connecting to the capacitor described in each embodiment of the first aspect, the power module comprising: a module body; a third electrode and a fourth electrode with opposite polarities, the third electrode and the fourth electrode are connected to the same end of the module body in a first direction, and are spaced apart in a third direction, the third electrode is suitable for connecting to the first electrode of the capacitor, the fourth electrode is suitable for connecting to the second electrode of the capacitor, and the first direction intersects with the third direction.

[0021] In one embodiment, there are at least two third electrodes, and the at least two third electrodes are respectively arranged on both sides of the fourth electrode in the third direction.

[0022] In one implementation, the third electrode is suitable for being connected to the first sub-connection end of the first electrode, and the fourth electrode is suitable for being connected to the second sub-connection end of the second electrode.

[0023] In one embodiment, the power module further includes a fifth electrode connected to an end of the module body away from the third electrode and the fourth electrode.

[0024] In a third aspect, the utility model further provides an electric control system, comprising the capacitor described in various embodiments of the first aspect and / or the power module described in various embodiments of the second aspect.

[0025] In one embodiment, the electric control system further includes a support member, which includes a support body and two fixed parts, wherein the two fixed parts are respectively connected to two ends of the support member in a third direction, and the two fixed parts are respectively connected to two ends of the capacitor in the third direction.

[0026] In one embodiment, the support member further includes a plurality of positioning posts, the plurality of positioning posts are spaced apart from each other on the support body, and the plurality of positioning posts are connected to the first positioning holes and the second positioning holes of the capacitor in a one-to-one correspondence.

[0027] In one embodiment, in the second direction, the support member is placed on the lower side of the capacitor and / or the power module to support the capacitor and / or the power module.

[0028] In a fourth aspect, the present invention further provides a vehicle, comprising the electronic control system described in various embodiments of the third aspect.

[0029] By setting a capacitor body and a first electrode and a second electrode with opposite polarities, the first electrode and the second electrode are connected to the same end of the capacitor body in a first direction, the first electrode and the second electrode are stacked and insulated in the second direction, and the first direction intersects with the second direction, so that the magnetic fields generated by the first electrode and the second electrode cancel each other out, thereby reducing stray inductance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 is a structural diagram of an electronic control system of an embodiment;

[0032] Figure 2 is a structural diagram of a support member of an embodiment;

[0033] Figure 3 is a structural diagram of a support member of another embodiment;

[0034] Figure 4 is a structural diagram of a power module of an embodiment;

[0035] Figure 5 is a structural diagram of a power module and a support member of an embodiment;

[0036] Figure 6 is a structural diagram of an electronic control system of another embodiment;

[0037] Figure 7 is a structural diagram of an electronic control system of another embodiment;

[0038] Figure 8 is a structural diagram of a capacitor of an embodiment;

[0039] Fig. 9 is a structural diagram of a capacitor in another embodiment;

[0040] Fig.10 is a structural diagram of a capacitor in another embodiment;

[0041] Fig.11 is a structural diagram of a power module of another embodiment;

[0042] Fig.12 is a structural diagram of a support member of another embodiment;

[0043] Fig.13It is a structural diagram of an electronic control system of another embodiment.

[0044] Description of reference numerals:

[0045] 100-Electronic control system;

[0046] 10-capacitor, 11-capacitor body, 111-housing, 12-first electrode, 121-first connection end, 122-first notch, 1221-first side wall, 1222-second side wall, 123-first main body, 124-first sub-connection end, 1241-first positioning hole, 125-first groove, 126-first limiting groove, 13-second electrode, 131-second connection end, 132-second notch, 133-third notch, 134-second sub-connection end, 1341-second positioning hole, 135-second main body, 136-bend Folding portion, 137-second cutting groove, 138-second limiting groove, 14-insulating layer, 141-third limiting groove, 15-output area, 151-first surface, 1511-first positive electrode area, 1512-first negative electrode area, 152-second surface, 1521-second positive electrode area, 1522-second negative electrode area, 16-first baffle, 161-first isolating portion, 162-second isolating portion, 163-third isolating portion, 17-second baffle, 171-fourth isolating portion, 172-fifth isolating portion, 173-sixth isolating portion, 18-third baffle;

[0047] 20 - power module, 21 - module body, 22 - third electrode, 221 - first positioning port, 23 - fourth electrode, 231 - second positioning port, 24 - fifth electrode, 241 - connection hole;

[0048] 30-supporting member, 31-supporting body, 32-fixing portion, 321-fixing hole, 33-supporting rib, 331-accommodating groove, 34-positioning portion, 35-positioning column, 36-fourth baffle;

[0049] X-third direction, Y-first direction, Z-second direction. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0052] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0053] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0054] Please refer to Figure 1 The present invention provides a vehicle (not shown), including an electric drive system (not shown), a battery pack (not shown) and an electric control system 100 (not shown) in an embodiment of the present invention. The battery pack and the electric drive system are electrically connected through the electric control system 100 in an embodiment of the present invention. The battery pack is used to provide direct current to the electric control system 100, and the electric control system 100 is used to convert the direct current into alternating current and transmit it to the electrodes of the electric drive system to drive the vehicle.

[0055] The vehicle provided by the present utility model adopts an electric drive system, a battery pack and an electric control system 100 in an embodiment of the present utility model. The battery pack and the electric drive system are electrically connected through the electric control system 100 in an embodiment of the present utility model. The battery pack is used to provide direct current to the electric control system 100. The electric control system 100 is used to convert the direct current into alternating current and transmit it to the electrodes of the electric drive system to drive the vehicle. This enables the motor to drive the vehicle through the alternating current output by the electric control system 100, while reducing the stray inductance of the electric control system 100, and improving the current carrying capacity and connection reliability.

[0056] Please refer to Figure 1 The present invention further provides an electric control system 100, including a power module 20 in an embodiment of the present invention and / or a capacitor 10 in an embodiment of the present invention, wherein the power module is used to convert the direct current input by the capacitor 10 into alternating current. Optionally, the power module 20 is connected to the capacitor 10 by welding, or by clamping, screwing, riveting, bonding, etc., without limitation.

[0057] Optionally, the electric control system 100 also includes an inverter (not shown) and a control module (not shown). The control module and the power module 20 in the embodiment of the utility model are electrically connected to the inverter, and the inverter is electrically connected to the aforementioned electric drive system. The inverter is used to convert direct current into alternating current and output it to the electric drive system. The control module is used to control the conversion power of the inverter to provide the required power for the electric drive system.

[0058] The electric control system 100 provided by the present invention, by adopting the power module 20 in the embodiment of the present invention and / or the capacitor 10 in the embodiment of the present invention, realizes the conversion of the direct current provided by the battery pack into the alternating current required by the electric drive system to drive the vehicle, while reducing the stray inductance of the electric control system 100 and improving the current carrying capacity and connection reliability.

[0059] The power module 20 and the capacitor 10 are both connected and fixed to the support member 30. The support member 30 is used to be connected and fixed to a fixed base (not shown) and provide support for the connection between the power module 20 and the capacitor 10.

[0060] Please refer to Figure 2 and Figure 3 The electric control system 100 further includes a support member 30, which includes a support body 31 and two fixing portions 32, wherein the two fixing portions 32 are respectively connected to two ends of the support body 31 in the third direction X, and the two fixing portions 32 are respectively connected to two ends of the capacitor 10 in the third direction X. Optionally, the support body 31 is used to be connected and fixed to a fixed base, and to provide support for the connection between the power module 20 and the capacitor 10, and the fixing portion 32 is used to be connected and fixed to a fixed base.

[0061] Optional, please refer to Figure 2 The fixing portion 32 is provided with a fixing hole 321, and the fixing portion 32 is connected and fixed to the fixing base by a screw (not shown). Optionally, the fixing portion 32 protrudes from the supporting body 31 in the second direction Z so that the screw is completely accommodated in the fixing portion 32, ensuring that there is a sufficient safety distance between the screw and the conductive parts of the capacitor 10 and the power module 20. Optionally, the fixing portion 32 can also be connected and fixed to the fixing base by means of clamping, welding, magnetic attraction, etc.

[0062] Optional, please refer to Figure 2The support member 30 further includes a support rib 33, which is connected to one end of the support body 31 facing the power module 20 and extends along the third direction X. The support rib 33 is used to provide support for the connection between the power module 20 and the capacitor 10. Optionally, there are multiple support ribs 33, and the multiple support ribs 33 are arranged at intervals in the first direction Y. Optionally, multiple connecting ribs are connected between two adjacent support ribs 33 to strengthen the structural strength of the support ribs 33. Optionally, the support rib 33 is provided with multiple receiving grooves 331, and the multiple receiving grooves 331 are arranged at intervals in the third direction X, and the multiple receiving grooves 331 are used to cooperate with the capacitor 10 for connection.

[0063] Optional, please refer to Figure 3 The end surface of the support body 31 facing away from the support rib 33 is connected with a plurality of positioning parts 34, and the plurality of positioning parts 34 are arranged at intervals in the third direction X. The positioning parts 34 are used for pre-assembly of the support member 30 and the fixed foundation so that the support member 30 and the fixed foundation are accurately connected. Optionally, the support member 30 can be made of a material that meets the requirements of structural strength, good insulation and non-corrosiveness, and can be plastic, bakelite, ceramics, etc., without limitation.

[0064] By setting a support member 30, the support member 30 includes a support body 31 and two fixing parts 32, the two fixing parts 32 are respectively connected to the two ends of the support body 31 in the third direction X, and the two fixing parts 32 are respectively connected to the two ends of the capacitor 10 in the third direction X, so that the connection stability between the power module 20 and the capacitor 10 is higher and it is not easy to be separated or displaced.

[0065] Please refer to Figure 2 The support member 30 further includes a plurality of positioning posts 35, which are spaced apart on the support body 31, and are connected one-to-one with the first positioning hole 1241 and the second positioning hole 1341 of the capacitor 10. Optionally, the plurality of positioning posts 35 are also connected one-to-one with the first positioning opening 221 and the third positioning opening of the power module 20.

[0066] By setting a plurality of positioning columns 35, the plurality of positioning columns 35 are spaced apart on the support body 31, and the plurality of positioning columns 35 are connected one-to-one with the first positioning hole 1241 and the second positioning hole 1341 of the capacitor 10, so that the power module 20 and the capacitor 10 can be accurately connected to the support member 30, and a limiting effect is provided for the capacitor 10 and the power module 20, thereby improving the assembly speed and connection stability of the electric control system 100.

[0067] Please refer to Figure 1 In the second direction Z, the support member 30 is placed on the lower side of the capacitor 10 and / or the power module 20 to support the capacitor 10 and / or the power module 20 .

[0068] Exemplarily, the support member 30 is placed on the lower side of the power module 20 in the second direction Z, and the capacitor 10 is placed on the upper side of the power module 20 in the second direction Z. Optionally, correspondingly, the assembly method of the electric control system 100 provided by the utility model is as follows: connect the multiple positioning parts 34 of the support member 30 to the fixed base for pre-installation, use screws and other structures to connect and fix the fixing part 32 to the fixed base, install the power module 20 on the support rib 33 of the support member 30 in the second direction Z, overlap the capacitor 10 at the corresponding position of the power module 20 in the second direction Z, and weld the overlap between the capacitor 10 and the power module 20.

[0069] Optionally, the support member 30 can also be placed on the lower side of the capacitor 10 in the second direction Z, and the power module 20 can be placed on the upper side of the power module 20 in the second direction Z. The support member 30 can also be placed on the lower side of the power module 20 and the capacitor 10 without limitation.

[0070] By being arranged in the second direction Z, the support member 30 is placed on the lower side of the capacitor 10 and / or the power module 20 to support the capacitor 10 and / or the power module 20, so that the connection stability between the power module 20 and the capacitor 10 is higher and less likely to be detached or displaced.

[0071] Please refer to Figure 4 and Figure 5 The utility model further provides a power module 20, which is suitable for connecting to the capacitor 10 in the embodiment of the utility model. The power module 20 includes a module body 21 and a third electrode 22 and a fourth electrode 23 with opposite polarities. The third electrode 22 and the fourth electrode 23 are connected to the same end of the module body 21 in the first direction Y and are spaced apart in the third direction X. The third electrode 22 is suitable for connecting to the first electrode 12 of the capacitor 10, and the fourth electrode 23 is suitable for connecting to the second electrode 13 of the capacitor 10. The first direction Y intersects with the third direction X.

[0072] Optionally, a first positioning opening 221 is provided at one end of the third electrode 22 away from the fourth electrode 23, and a second positioning opening 231 is provided at one end of the fourth electrode 23 away from the module body 21. The first positioning opening 221 is used to connect with the support member 30, and the second positioning opening 231 is used to correspond to the second positioning hole 1341 of the capacitor 10, so that the power component is correctly connected to the capacitor 10 and the support member 30. Optionally, the third electrode 22 can be made of a material with high conductivity, good heat dissipation performance and easy processing and forming, which can be copper, copper alloy, steel and nickel, etc., without limitation. Optionally, the material of the fourth electrode 23 is similar to that of the third electrode 22, and can be referred to and will not be repeated.

[0073] By setting a power module 20, it is suitable for connecting with the capacitor 10 in the embodiment of the utility model. The power module 20 includes a module body 21 and a third electrode 22 and a fourth electrode 23 with opposite polarities. The third electrode 22 and the fourth electrode 23 are connected to the same end of the module body 21 in the first direction Y and are arranged at intervals in the third direction X. The third electrode 22 is suitable for connecting with the first electrode 12 of the capacitor 10, and the fourth electrode 23 is suitable for connecting with the second electrode 13 of the capacitor 10. The first direction Y intersects with the third direction X, so that the direct current output by the capacitor 10 can be converted into alternating current through the power module 20 to drive the motor to work, and at the same time, the positive and negative currents of the capacitor 10 can flow to the third electrode 22 and the fourth electrode 23 respectively, and the connection stability and current carrying capacity between the power module 20 and the capacitor 10 are improved, and the stray inductance is reduced.

[0074] Please refer to Figure 4 and Figure 5 There are at least two third electrodes 22, and at least two third electrodes 22 are respectively arranged on both sides of the fourth electrode 23 in the third direction X. Optionally, the two third electrodes 22 are used to connect to the pole pieces of the same polarity of the capacitor 10. Optionally, there can be multiple third electrodes 22 and multiple fourth electrodes 23, and the multiple third electrodes 22 and the multiple fourth electrodes 23 are alternately arranged.

[0075] By setting at least two third electrodes 22, at least two third electrodes 22 are respectively set on both sides of the fourth electrode 23 in the third direction X, so that the contact area between the power module 20 and the capacitor 10 is larger, and the current carrying capacity between the power module 20 and the capacitor 10 is improved.

[0076] Please refer to Figure 1 The third electrode 22 is suitable for connecting to the first sub-connection end 124 of the first electrode 12 , and the fourth electrode 23 is suitable for connecting to the second sub-connection end 134 of the second electrode 13 .

[0077] Optionally, when there are multiple first sub-connection terminals 124, there are multiple third electrodes 22, and they are connected one-to-one with the multiple first sub-connection terminals 124. Optionally, when there are multiple second sub-connection terminals 134, there are multiple fourth electrodes 23, and they are connected one-to-one with the multiple second sub-connection terminals 134.

[0078] By setting the third electrode 22 to be suitable for connecting to the first sub-connection terminal 124 of the first electrode 12, and the fourth electrode 23 to be suitable for connecting to the second sub-connection terminal 134 of the second electrode 13, the pole pieces with the same polarity between the power module 20 and the capacitor 10 are correctly connected to realize the conversion of the direct current provided by the battery pack into the alternating current required by the electric drive system.

[0079] Please refer to Figure 4 and Figure 5The power module 20 further includes a fifth electrode 24 , which is connected to an end of the module body 21 away from the third electrode 22 and the fourth electrode 23 .

[0080] Optionally, the fifth electrode 24 is used to output the alternating current converted by the power component. Optionally, the fifth electrode 24 is provided with a connection hole 241, and the connection hole 241 is used to connect to a line (not shown) to cooperate with the fifth electrode 24 to output the alternating current to the aforementioned electric drive system. Optionally, the material of the fifth electrode 24 is similar to that of the third electrode 22, which can be used for reference and will not be repeated.

[0081] By providing the fifth electrode 24 , which is connected to one end of the module body 21 away from the third electrode 22 and the fourth electrode 23 , the alternating current generated by the electric control system 100 can be output to the motor through the fifth pole piece to drive the vehicle.

[0082] Please refer to Figures 5 to 7 The support member 30 is integrated with the power module 20 and is located on the side of the third electrode 22 and the fourth electrode 23 facing away from the capacitor 10. The support member 30 contacts the third electrode 22 and the fourth electrode 23. Optionally, the support member 30 is connected to the module body 21.

[0083] By arranging the support member 30 to be integrated with the power module 20 and located on the side of the third electrode 22 and the fourth electrode 23 facing away from the capacitor 10, the support member 30 is in contact with the third electrode 22 and the fourth electrode 23, so that the assembly of the electric control system 100 is faster, the production speed is improved, and the production cost is reduced.

[0084] Please refer to Figure 8 and Fig. 9 The utility model also provides a capacitor 10, including a capacitor body 11 and a first electrode 12 and a second electrode 13 with opposite polarities, the first electrode 12 and the second electrode 13 are connected to the same end of the capacitor body 11 in a first direction Y, the first electrode 12 and the second electrode 13 are stacked and insulated in a second direction Z, and the first direction Y intersects with the second direction Z.

[0085] Optionally, the capacitor body 11 includes a shell 111, a plate (not shown) and a pin (not shown), the shell 111 encloses a receiving space (not shown), the capacitor body 11 plate and the plate are both received in the receiving space, the pin is electrically connected to the capacitor body 11 plate, and extends out of the shell 111 to communicate with the outside world, the capacitor body 11 plate and the plate are spaced apart, and a medium (not shown) is filled between the capacitor body 11 plate and the plate.

[0086] Optionally, the shell 111 can be made of a material that meets the requirements of strength, good insulation and high temperature resistance, specifically bakelite, ceramics and plastics, etc., without limitation. Optionally, the capacitor body 11 plate can be made of a material that is conductive, corrosion-resistant and high temperature resistant, specifically aluminum, copper and nickel-chromium alloys, etc., without limitation. Optionally, the material of the plate is similar to that of the capacitor body 11 plate, for reference only, without limitation. Optionally, the medium can be made of a material with low dielectric constant, stable chemical properties and high temperature resistance, specifically air, plastics and ceramics, etc., without limitation.

[0087] Optionally, the material of the first electrode 12 is similar to that of the third electrode 22, which can be used as a reference and will not be described in detail. Optionally, the material of the second electrode 13 is similar to that of the third electrode 22, which can be used as a reference and will not be described in detail. Optionally, the first direction Y and the second direction Z can be perpendicular or have an acute angle, without limitation.

[0088] By setting a capacitor body 11 and a first electrode 12 and a second electrode 13 with opposite polarities, the first electrode 12 and the second electrode 13 are connected to the same end of the capacitor body 11 in the first direction Y, the first electrode 12 and the second electrode 13 are stacked and insulated in the second direction Z, and the first direction Y intersects with the second direction Z. Compared with a solution in which the positive and negative electrodes are arranged in parallel and fixed to the power module 20 by screwing, in which the magnetic fields generated by the positive and negative electrodes cannot be offset to generate stray inductance and there is a risk of unstable connection, the present solution adopts a stacked arrangement of the first electrode 12 and the second electrode 13, so that the magnetic fields generated by the first electrode 12 and the second electrode 13 offset each other, thereby reducing the stray inductance.

[0089] Please refer to Figure 8 and Fig. 9 In the second direction Z, the first electrode 12 is arranged on the upper side of the second electrode 13.

[0090] By being arranged in the second direction Z, the first electrode 12 is arranged on the upper side of the second electrode 13 , so that the magnetic fields generated by the first electrode 12 and the second electrode 13 cancel each other out, thereby reducing stray inductance.

[0091] Please refer to Figure 8 and Fig. 9 Along the first direction Y, a first connection end 121 is formed at one end of the first electrode 12 away from the capacitor body 11 . The first connection end 121 is provided with a first notch 122 . At least a portion of the second electrode 13 is exposed in the first notch 122 .

[0092] Optionally, in the orthographic projection on the second direction Z, the contour shape of the first notch 122 can be a rectangle, a parallelogram, a triangle, etc., without limitation. Optionally, the first motor further includes a first main body 123 , one end of the first main body 123 is connected to the capacitor body 11 , and the other end is connected to the first connection end 121 .

[0093] By setting along the first direction Y, a first connection end 121 is formed at one end of the first electrode 12 away from the capacitor body 11, and a first notch 122 is opened in the first connection end 121. At least a portion of the second electrode 13 is exposed to the first notch 122, so that the second electrode 13 can be exposed from the surface of the first electrode 12 through the first notch 122, which is convenient for connection with the power module 20, and the stray inductance is low, and the current carrying capacity and connection reliability are high.

[0094] Please refer to Figures 8 to 13 The first notch 122 is opened in the middle of the first connection end 121 in the third direction X, and forms two first sub-connection ends 124. The third direction X intersects with both the first direction Y and the second direction Z.

[0095] Optional, please refer to Figure 8 and Fig. 9 The two first sub-connection ends 124 are both connected to the aforementioned first main body portion, and are spaced apart from the second electrode 13 by a distance.

[0096] Optional, please refer to Figures 10 to 13 The first notch 122 has a first side wall 1221 and a second side wall 1222 in the third direction X, and the first side wall 1221 and the second side wall 1222 at one end close to the first main body 123 extend along the first direction Y, and the spacing distance between the first side wall 1221 and the second side wall 1222 at one end away from the first main body 123 gradually decreases, and the second sub-connection end 134 is arranged in cooperation with the inner wall surface of the first notch 122.

[0097] Optionally, the first isolation portion 161 and the second isolation portion 162 extend from the third isolation portion 163 along the first direction Y and are received in the first notch 122. Optionally, a fourth baffle 36 is provided on the support member 30, and the fourth baffle 36 is matched with the gap between the first sub-connection end 124 and the second sub-connection end 134, and extends into the gap between the first isolation portion 161 and the second isolation portion 162 and the second sub-connection end 134.

[0098] By setting the first notch 122 to be opened in the middle of the first connection end 121 in the third direction X, and forming two first sub-connection ends 124, the third direction X intersects with both the first direction Y and the second direction Z, so that the capacitor 10 and the power module 20 are connected in three phases, so that the connection stability between the capacitor 10 and the power module 20 is higher, and the conversion efficiency of the power module 20 is higher.

[0099] Please refer to Figure 8 and Fig. 9 Along the first direction Y, a second connection end 131 is formed at one end of the second electrode 13 away from the capacitor body 11, and the second connection end 131 is provided with a second notch 132 and a third notch 133. The second notch 132 and the third notch 133 are spaced apart in the third direction X to form a second sub-connection end 134.

[0100] Optionally, the second electrode 13 further includes a second main body 135, one end of the second main body 135 is connected to the capacitor body 11, and the other end is connected to the second connection end 131. Optionally, the second electrode 13 further includes a bending portion 136, one end of the bending portion 136 is connected to the second main body 135, and the other end is bent toward the first electrode 12 and connected to the second sub-connection end 134, so that the second sub-connection end 134 and the first sub-connection end 124 are flush in the second direction Z.

[0101] Optionally, in the orthographic projection on the second direction Z, the contour shapes of the second notch 132 and the third notch 133 cooperate with the first notch 122 so that the first sub-connection end 124 and the second sub-connection end 134 are spaced apart to prevent short circuit between the first sub-connection end 124 and the second sub-connection end 134.

[0102] By setting a second connection terminal 131 along the first direction Y, the end of the second electrode 13 away from the capacitor body 11 is formed, and the second connection terminal 131 is provided with a second notch 132 and a third notch 133. The second notch 132 and the third notch 133 are spaced apart in the third direction X to form a second sub-connection terminal 134, so that the two first sub-connection terminals 124 of the first electrode 12 can be exposed on the surface of the second electrode 13 through the second notch 132 and the third notch 133, which is convenient for connection with the power module 20, and has low stray inductance, high current carrying capacity and connection reliability.

[0103] Please refer to Figure 8 and Fig. 9 The second sub-connection ends 134 are exposed to the first notch 122 , one of the first sub-connection ends 124 is exposed to the second notch 132 , and the other first sub-connection end 124 is exposed to the third notch 133 .

[0104] By setting the second sub-connection end 134 to be exposed to the first notch 122, wherein one of the first sub-connection ends 124 is exposed to the second notch 132 and the other first sub-connection end 124 is exposed to the third notch 133, the second sub-connection end 134 and the first sub-connection end 124 are flush in the second direction Z, which facilitates connection and fixation with the aforementioned support member 30 and the power module 20. At the same time, the capacitor 10 and the power module 20 are connected in three phases, and the conversion efficiency of the power module 20 is higher.

[0105] Please refer to Figure 8 and Fig. 9 The first electrode 12 is also provided with a first groove 125 , and the second electrode 13 is also provided with a second groove 137 corresponding to the position of the first groove 125 , so as to form a plurality of output regions 15 on the capacitor 10 , each output region 15 includes a first connection terminal 121 and a second connection terminal 131 .

[0106] Optionally, each output region 15 includes two first connection ends 121 and a second connection end 131. Optionally, the plurality of output regions 15 are electrically connected to each other. Optionally, the first slot 125 and the second slot 137 may be arranged relative to each other in the second direction Z, or may be arranged alternately, without limitation. Optionally, there are a plurality of first slots 125, and the plurality of first slots 125 are arranged at intervals in the third direction X. Optionally, there are a plurality of second slots 137, and the plurality of second slots 137 are arranged at intervals in the third direction X.

[0107] By setting the first electrode 12 to also have a first groove 125, and the second electrode 13 to also have a second groove 137 corresponding to the position of the first groove 125, a plurality of output areas 15 are formed on the capacitor 10, each of which includes a first connection terminal 121 and a second connection terminal 131, so that when the first electrode 12 and the second electrode 13 are welded to the power module 20, the deformation accumulation of the first electrode 12 and the second electrode 13 caused by high temperature and external force is reduced, thereby ensuring the flatness and fit of the welding area.

[0108] Please refer to Figure 8 and Fig. 9 The first slot 125 is extended along the first direction Y and connected to the end surface of the first electrode 12 away from the capacitor body 11, and the second slot 137 is extended along the first direction Y and connected to the end surface of the second electrode 13 away from the capacitor body 11. Optionally, the end of the first slot 125 close to the capacitor body 11 is rounded to reduce the stress at the connection between the two adjacent output areas 15 and prevent it from breaking.

[0109] Optionally, the opening of the first slot 125 may be rounded to prevent the sharp portion of the first electrode 12 from damaging other structures and operators. Optionally, the structure of the second slot 137 is similar to that of the first slot 125, which can be referred to and will not be described in detail.

[0110] By setting the first groove 125 extending along the first direction Y and connecting the end surface of the first electrode 12 away from the capacitor body 11, and the second groove 137 extending along the first direction Y and connecting the end surface of the second electrode 13 away from the capacitor body 11, multiple output areas 15 are electrically connected, the structure is simple, and the processing difficulty is low.

[0111] Please refer to Figure 8 and Fig. 9 The capacitor 10 further includes an insulating layer 14 , which is disposed between the first electrode 12 and the second electrode 13 .

[0112] Optionally, the insulating layer 14 may be connected to the housing 111 of the capacitor body 11 or may be spaced apart from the housing 111 without limitation. Optionally, the insulating layer 14 has third limiting grooves 141 at both ends in the third direction X, and the third limiting grooves 141 are used to connect to the fixing portion 32.

[0113] Optionally, both ends of the insulating layer 14 in the third direction X protrude from the first electrode 12 and the second electrode 13 to increase the creepage distance between the first electrode 12 and the second electrode 13, prevent short circuit between the first electrode 12 and the second electrode 13, and improve the electrical safety of the capacitor 10. Optionally, the insulating layer 14 can be made of a material with good insulation, high temperature resistance and stable chemical properties, specifically ceramics, bakelite and glass, etc., without limitation.

[0114] By providing the insulating layer 14 between the first electrode 12 and the second electrode 13 , it is difficult for a short circuit to occur between the first electrode 12 and the second electrode 13 , thereby improving the safety of the capacitor 10 .

[0115] Please refer to Figure 8 and Fig. 9 The capacitor 10 includes a plurality of output regions 15, each of which includes a first surface 151 and a second surface 152 opposite to each other in a second direction Z, the first surface 151 is provided with a first positive region 1511 and a first negative region 1512, a first baffle 16 is provided at the junction of the first positive region 1511 and the first negative region 1512, the first baffle 16 is suitable for isolating the first positive region 1511 and the first negative region 1512, the second surface 152 is provided with a second positive region 1521 and a second negative region 1522, a second baffle 17 is provided at the junction of the second positive region 1521 and the second negative region 1522, the second baffle 17 is suitable for isolating the second positive region 1521 and the second negative region 1522. Optionally, each of the output regions 15 includes two first connection terminals 121 and a second connection terminal 131.

[0116] Optionally, the first baffle 16 and the insulating layer 14 may be an integral structure, or may be detachably connected by snapping, bonding, welding, etc., without limitation. Optionally, the first baffle 16 includes a first isolating portion 161, a second isolating portion 162, and a third isolating portion 163, the first isolating portion 161 and the second isolating portion 162 are arranged opposite to each other in the third direction X, and are respectively located on both sides of the second sub-connection end 134, the third isolating portion 163 is arranged between the second sub-connection end 134 and the first main body 123, and are respectively connected to the first isolating portion 161 and the second isolating portion 162. Optionally, the first isolating portion 161 and the second isolating portion 162 protrude from the end of the first electrode 12 facing away from the capacitor body 11, and protrude from the end of the second electrode 13 facing away from the capacitor body 11.

[0117] Optionally, the second baffle 17 includes a fourth isolating portion 171 and a fifth isolating portion 172, which are arranged opposite to each other in the third direction X and are respectively located on both sides of the second sub-connection end 134, the fourth isolating portion 171 is connected to the first isolating portion 161, and the fifth isolating portion 172 is connected to the second isolating portion 162. Optionally, the fourth isolating portion 171 and the first isolating portion 161 are an integrated structure, and / or the fifth isolating portion 172 and the second isolating portion 162 are an integrated structure.

[0118] Optionally, the capacitor 10 also includes multiple third baffles 18, which are respectively connected to the two ends of the insulating layer 14 in the third direction X, and the multiple third baffles 18 all protrude from the second surface 152. One end of any third baffle 18 is connected to the second baffle 17, and the other end is connected to the capacitor body 11.

[0119] Optionally, the third baffle 18 extends along the outer peripheral edge of the insulating layer 14. Optionally, the third baffle 18 and the insulating layer 14 can be an integral structure, or can be detachably connected by snapping, bonding, welding, etc., without limitation. Optionally, the material of the third baffle 18 is similar to that of the aforementioned isolation layer, which can be used as a reference without limitation. Optionally, the materials of the first baffle 16, the second baffle 17, and the third baffle 18 are similar to those of the aforementioned isolation layer, which can be used as a reference without limitation.

[0120] The capacitor 10 is provided with a plurality of output regions 15, each of which includes a first surface 151 and a second surface 152 opposite to each other in a second direction Z, the first surface 151 is provided with a first positive region 1511 and a first negative region 1512, a first baffle 16 is provided at the junction of the first positive region 1511 and the first negative region 1512, the first baffle 16 is suitable for isolating the first positive region 1511 and the first negative region 1512, the second surface 152 is provided with a second positive region 1521 and a second negative region 1522, a second baffle 17 is provided at the junction of the second positive region 1521 and the second negative region 1522, the second baffle 17 is suitable for isolating the second positive region 1521 and the second negative region 1522, so that the creepage distance between the first electrode 12 and the second electrode 13 is increased, a short circuit between the first electrode 12 and the second electrode 13 is prevented, and the electrical safety of the capacitor 10 is improved.

[0121] Please refer to Figure 8 and Fig. 9 , the first baffle 16 protrudes from the first surface 151, and the second baffle 17 protrudes from the second surface 152. Optionally, the first isolation portion 161, the second isolation portion 162, and the third isolation portion 163 all protrude from the first surface 151, the fourth isolation portion 171 and the fifth isolation portion 172 protrude from the second surface 152, and the third baffle 18 protrudes from the second surface 152.

[0122] By arranging the first baffle 16 to protrude from the first surface 151 and the second baffle 17 to protrude from the second surface 152 , the creepage distance between the first electrode 12 and the second electrode 13 is increased, thereby preventing short circuit between the first electrode 12 and the second electrode 13 and improving the electrical safety of the capacitor 10 .

[0123] Please refer to Fig. 9 , the second baffle 17 is at least partially arranged across any two adjacent output regions 15. Optionally, the second baffle 17 further includes a sixth isolation portion 173, which is arranged across any two adjacent output regions 15 and connected to the fourth isolation portion 171 of one of the output regions 15 and the fifth isolation portion 172 of the other output region 15. Optionally, the sixth isolation portion 173 of each output region 15 is arranged between the second main body portion 135 and the first sub-connection end 124.

[0124] By arranging the second baffle 17 to at least partially span any two adjacent output areas 15, the creepage distance between the second main body 135 and the first sub-connection terminal 124 of each output area 15 is increased, thereby preventing a short circuit between the second main body 135 and the first sub-connection terminal 124 and improving the electrical safety of the capacitor 10.

[0125] Please refer to Figure 8 and Fig. 9The first sub-connection end 124 is provided with a first positioning hole 1241, and / or the second sub-connection end 134 is provided with a second positioning hole 1341. Optionally, the first positioning hole 1241 is used to correspond to the aforementioned positioning column 35. Optionally, the second positioning hole 1341 is used to correspond to the aforementioned second positioning opening 231.

[0126] By providing the first sub-connection end 124 with a first positioning hole 1241, and / or the second sub-connection end 134 with a second positioning hole 1341, the capacitor 10 can be correctly connected to the support member 30, thereby improving the connection stability between the capacitor 10 and the support member 30, and at the same time providing a positioning function for the welding operation to ensure the accuracy of the welding position.

[0127] Please refer to Figure 8 and Fig. 9 The first electrode 12 has first limiting grooves 126 at both ends in the third direction X, and the second electrode 13 has second limiting grooves 138 at both ends in the third direction X. The first limiting grooves 126 and the second limiting grooves 138 are correspondingly arranged in the second direction Z. The first limiting grooves 126 and the second limiting grooves 138 are both suitable for being connected with the support member 30, and the third direction X intersects with the first direction Y and the second direction Z.

[0128] Optionally, the first limiting groove 126 and the second limiting groove 138 are arranged corresponding to the aforementioned third limiting groove 141 and are arranged corresponding to the aforementioned third baffle 18 to be matched and connected with the fixing portion 32 of the support member 30 .

[0129] By setting the first electrode 12 to have first limiting grooves 126 at both ends in the third direction X, and the second electrode 13 to have second limiting grooves 138 at both ends in the third direction X, the first limiting grooves 126 and the second limiting grooves 138 are correspondingly arranged in the second direction Z, and the first limiting grooves 126 and the second limiting grooves 138 are both suitable for matching and connecting with the support member 30. The third direction X intersects with the first direction Y and the second direction Z, so that the capacitor 10 can be correctly connected to the support member 30, thereby improving the connection stability between the capacitor 10 and the support member 30.

[0130] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0131] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the embodiment are implemented, and equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A capacitor (10), characterized in that: include: Capacitor body (11); A first electrode (12) and a second electrode (13) with opposite polarities, the first electrode (12) and the second electrode (13) are connected to the same end of the capacitor body (11) in a first direction (Y), the first electrode (12) and the second electrode (13) are stacked and insulated in a second direction (Z), and the first direction (Y) intersects with the second direction (Z).

2. The capacitor (10) according to claim 1, characterized in that In the second direction (Z), the first electrode (12) is arranged on the upper side of the second electrode (13).

3. The capacitor (10) according to claim 1, characterized in that Along the first direction (Y), a first connection end (121) is formed at one end of the first electrode (12) away from the capacitor (10) body, the first connection end (121) is provided with a first notch (122), and at least a portion of the second electrode (13) is exposed in the first notch (122).

4. The capacitor (10) according to claim 3, characterized in that The first notch (122) is opened in the middle of the first connection end (121) in a third direction (X) to form two first sub-connection ends (124), and the third direction (X) intersects with both the first direction (Y) and the second direction (Z).

5. The capacitor (10) according to claim 4, characterized in that Along the first direction (Y), the second electrode (13) is provided with a second connection end (131) at one end away from the capacitor body (11); the second connection end (131) is provided with a second notch (132) and a third notch (133); the second notch (132) and the third notch (133) are arranged at intervals in the third direction (X) to form a second sub-connection end (134).

6. The capacitor (10) according to claim 5, characterized in that The second sub-connection end (134) is exposed to the first notch (122), wherein one of the first sub-connection ends (124) is exposed to the second notch (132), and the other first sub-connection end (124) is exposed to the third notch (133).

7. The capacitor (10) according to claim 5, characterized in that The first electrode (12) is further provided with a first groove (125), and the second electrode (13) is further provided with a second groove (137) corresponding to the position of the first groove (125), so as to form a plurality of output regions (15) on the capacitor (10), each of the output regions (15) comprising the first connection end (121) and the second connection end (131).

8. The capacitor (10) according to claim 7, characterized in that The first groove (125) is extended along the first direction (Y) and is connected to the end surface of the first electrode (12) away from the capacitor body (11); the second groove (137) is extended along the first direction (Y) and is connected to the end surface of the second electrode (13) away from the capacitor body (11).

9. The capacitor (10) according to claim 1, characterized in that The capacitor (10) further comprises an insulating layer (14), wherein the insulating layer (14) is arranged between the first electrode (12) and the second electrode (13).

10. The capacitor (10) according to claim 9, characterized in that The capacitor (10) comprises a plurality of output regions (15), each of the output regions (15) comprising a first surface (151) and a second surface (152) opposite to each other in the second direction (Z), the first surface (151) being provided with a first positive region (1511) and a first negative region (1512), a first baffle (16) being provided at the junction of the first positive region (1511) and the first negative region (1512), the first baffle (16) being suitable for isolating the first positive region (1511) and the first negative region (1512); The second surface (152) is provided with a second positive electrode region (1521) and a second negative electrode region (1522); a second baffle (17) is provided at the junction of the second positive electrode region (1521) and the second negative electrode region (1522); the second baffle (17) is suitable for isolating the second positive electrode region (1521) and the second negative electrode region (1522).

11. The capacitor (10) according to claim 10, characterized in that The first baffle (16) protrudes from the first surface (151), and the second baffle (17) protrudes from the second surface (152).

12. The capacitor (10) according to claim 10, characterized in that The second baffle (17) is at least partially arranged across any two adjacent output areas (15).

13. The capacitor (10) according to claim 5, characterized in that The first sub-connection end (124) is provided with a first positioning hole (1241), and / or the second sub-connection end (134) is provided with a second positioning hole (1341).

14. The capacitor (10) according to claim 1, characterized in that The first electrode (12) is provided with a first limiting groove (126) at both ends in the third direction (X), and the second electrode (13) is provided with a second limiting groove (138) at both ends in the third direction (X), the first limiting groove (126) and the second limiting groove (138) are arranged correspondingly in the second direction (Z), and the first limiting groove (126) and the second limiting groove (138) are both suitable for being matched and connected with the support member (30); The third direction (X) intersects both the first direction (Y) and the second direction (Z).

15. A power module (20), characterized in that: Suitable for connection with the capacitor (10) according to any one of claims 1 to 14, the power module (20) comprising: Module body (21); A third electrode (22) and a fourth electrode (23) with opposite polarities, the third electrode (22) and the fourth electrode (23) are connected to the same end of the module body (21) in the first direction (Y) and are arranged at intervals in the third direction (X), the third electrode (22) is suitable for connecting to the first electrode (12) of the capacitor (10), and the fourth electrode (23) is suitable for connecting to the second electrode (13) of the capacitor (10), and the first direction (Y) intersects with the third direction (X).

16. The power module (20) according to claim 15, characterized in that: There are at least two third electrodes (22), and the at least two third electrodes (22) are respectively arranged on both sides of the fourth electrode (23) in the third direction (X).

17. The power module (20) according to claim 15, characterized in that: The third electrode (22) is suitable for being connected to the first sub-connection end (124) of the first electrode (12), and the fourth electrode (23) is suitable for being connected to the second sub-connection end (134) of the second electrode (13).

18. The power module (20) according to claim 15, characterized in that: The power module (20) further comprises a fifth electrode (24), wherein the fifth electrode (24) is connected to an end of the module body (21) away from the third electrode (22) and the fourth electrode (23).

19. An electric control system (100), characterized in that: It comprises the capacitor (10) according to any one of claims 1 to 14 and / or the power module (20) according to any one of claims 15 to 18.

20. The electronic control system (100) according to claim 19, characterized in that: The electric control system (100) further comprises a support member (30), wherein the support member (30) comprises a support body (31) and two fixing portions (32), wherein the two fixing portions (32) are respectively connected to two ends of the support member (30) in a third direction (X), and the two fixing portions (32) are respectively connected to two ends of the capacitor (10) in the third direction (X).

21. The electronic control system (100) according to claim 20, characterized in that: The support member (30) further comprises a plurality of positioning posts (35), wherein the plurality of positioning posts (35) are arranged at intervals on the support body (31), and the plurality of positioning posts (35) are connected to the first positioning hole (1241) and the second positioning hole (1341) of the capacitor (10) in a one-to-one correspondence.

22. The electronic control system (100) according to claim 20, characterized in that: In the second direction (Z), the support member (30) is placed on the lower side of the capacitor (10) and / or the power module (20) to support the capacitor (10) and / or the power module (20).

23. A vehicle, characterized in that: Comprising the electronic control system (100) as claimed in any one of claims 19 to 22.

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