Capacitors for new energy passenger car controllers

Abstract

The invention discloses a novel capacitor for a controller of a new energy passenger vehicle. A capacitor core group is accommodated in a slot cavity formed by a U-shaped slot structure of an upper conductive heat dissipation copper plate and a lower conductive heat dissipation copper plate that are buckled together in opposite directions. Two AC output-end conductive copper bars are respectively connected and fixed on two side outer walls of the U-shaped slot structure of the upper conductive heat dissipation copper plate, and the lower conductive heat dissipation copper plate is connected and fixed on two side outer walls of the U-shaped slot structure on which two DC input-end conductive copper bars are arranged. A safety capacitor is arranged on the same side of a short side of the capacitor core group and is connected to a grounding-end conductive copper bar. The grounding-end conductive copper bar is vertically arranged with the two AC output-end conductive copper bars and the two DC input-end conductive copper bars in space to form a three-way conductive copper bar distribution structure. The structure is more reasonable and compact, the product volume is smaller, it is more conducive to the overall miniaturization development of the controller, the electrical safety is high, and the filtering effect is better.

Description

Technical Field

[0001] The present invention relates to a capacitor, and in particular to a capacitor used in a new energy passenger vehicle controller. Background Art

[0002] Capacitors can usually be applied to many products and usage scenarios, including applications in circuits or electrical functions such as filtering, energy storage, and power control. Moreover, with the continuous development of new energy vehicles, new energy vehicle controllers have also been continuously developed, and are widely used as key capacitor devices in new energy vehicle controllers to achieve DC-AC inverter conversion; however, the key capacitor devices currently used in new energy vehicle controllers to achieve DC-AC inverter conversion have unreasonable and compact structures, large product volumes, and are not conducive to the overall miniaturization of controllers. There are electrical safety hazards and poor filtering effects. Summary of the invention

[0003] The present invention aims to solve the problems of key capacitor components used in existing new energy vehicle controllers for realizing DC-AC inverter conversion, such as unreasonable and compact structure, large product volume, being not conducive to the overall miniaturization of the controller, potential electrical safety hazards, and poor filtering effect. The present invention provides a capacitor for a new type of new energy passenger vehicle controller with a more reasonable and compact structure, a more compact and smaller product volume, which is more conducive to the overall miniaturization of the controller, high electrical safety, and better filtering effect.

[0004] The specific technical solution adopted by the present invention to solve the above technical problems is: a new type of capacitor for new energy passenger car controller, including a capacitor packaging shell and a capacitor core group, characterized in that it also includes an upper conductive heat dissipation copper plate, a lower conductive heat dissipation copper plate, an AC output end conductive copper bar, a DC input end conductive copper bar, a safety capacitor, a grounding end conductive copper bar and a special-shaped sealing ring. The upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are both U-shaped slot structures as a whole. The capacitor core group is accommodated in a slot cavity formed by the U-shaped slot structure of the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate that are buckled together in opposite directions; two AC output end conductive copper bars are respectively connected and fixed on the two side outer walls of the U-shaped slot structure of the upper conductive heat dissipation copper plate. The lower conductive heat dissipation copper plate is connected and fixedly provided with two side outer walls of the U-shaped slot structure with two DC input conductive copper bars; a safety capacitor is provided on the same side of a short side of the capacitor inner core group and is connected with a grounding conductive copper bar, which is provided at the outer side of the slot cavity opening, and the grounding conductive copper bar is vertically arranged with the two AC output conductive copper bars and the two DC input conductive copper bars in space, forming a three-way conductive copper bar distribution structure in which the grounding conductive copper bar is independent and far away from the two AC output conductive copper bars and the two DC input conductive copper bars; the special-shaped sealing ring is connected and sealed at the inner ends of the AC output conductive copper bar and the DC input conductive copper bar connected and fixed to the folded part where the heat dissipation copper plate is connected. The three-way conductive copper busbar distribution structure not only improves the electrical safety of the capacitor in circuit applications, but also improves the rationality of the electrical connection space distribution with the IGBT module controller, which is more conducive to the overall miniaturization of the controller, with a more reasonable and compact structure, a more compact and smaller product volume, high electrical safety, and better filtering effect; the fusion and embedding of the special-shaped sealing ring guarantees the sealing and product quality between the conductive copper busbar and the capacitor plastic shell to a greater extent, and also improves the electrical safety between the capacitor terminals, improves product production efficiency and product quality consistency; the built-in integration and rationality of the spatial distribution of safety capacitors improve the shortest path of the capacitor and optimize the filtering effect; the capacitor core group accommodating slot cavity formed by the mutually interlocking U-shaped slot structure guarantees the effective heat dissipation area utilization of the capacitor core group and the simple, compact, stable, reliable and effective structure to the greatest extent.

[0005] Preferably, the upper conductive heat dissipation copper plate comprises a first upper conductive heat dissipation copper plate, a second upper conductive heat dissipation copper plate and a third upper conductive heat dissipation copper plate, the first upper conductive heat dissipation copper plate is folded 90 degrees at its two long sides and is extended to be connected with the second upper conductive heat dissipation copper plate and the third upper conductive heat dissipation copper plate, and the second upper conductive heat dissipation copper plate and the third upper conductive heat dissipation copper plate are both folded 90 degrees in the same direction and extended to be connected to the first upper conductive heat dissipation copper plate, forming a U-shaped slot structure as a whole; and the length dimension of the third upper conductive heat dissipation copper plate is smaller than the length dimension of the first upper conductive heat dissipation copper plate in the same direction, forming a notch-type U-shaped slot structure with a section of slot side wall notch, and the notch is located at the left side of the third upper conductive heat dissipation copper plate; two AC output-end conductive copper bars are connected and fixedly provided on the upper conductive heat dissipation copper plate, wherein the first AC output-end conductive copper bar is connected and fixedly provided on the first upper conductive heat dissipation copper plate and is connected to the second upper conductive heat dissipation copper plate, and the second AC output-end conductive copper bar is connected and fixedly provided on the third upper conductive heat dissipation copper plate and is close to the notch side, and the two AC output-end conductive copper bars are distributed in parallel in space. Improve the simplicity and compactness of the heat dissipation coating structure of the upper conductive heat dissipation copper plate for the capacitor core group, improve the reasonableness, reliability and effectiveness of the heat dissipation and conductive distribution between the upper conductive heat dissipation copper plate and the two AC output end conductive copper busbar structures, and improve the simplicity, stability, reliability and effectiveness of the spatial fusion of the mutual buckling between the upper and lower conductive heat dissipation copper plates to form a coating cavity for the capacitor core group.

[0006] Preferably, the lower conductive heat dissipation copper plate comprises a first lower conductive heat dissipation copper plate, a second lower conductive heat dissipation copper plate and a third lower conductive heat dissipation copper plate, the first lower conductive heat dissipation copper plate is folded 90 degrees at its two long sides, and the second lower conductive heat dissipation copper plate and the third lower conductive heat dissipation copper plate are folded 90 degrees in the same direction and extended to be connected to the first lower conductive heat dissipation copper plate, and the whole together forms a U-shaped slot structure; and the length dimension of the third lower conductive heat dissipation copper plate is smaller than the length dimension of the first lower conductive heat dissipation copper plate in the same direction, forming a notch-type U-shaped slot structure with a section of slot side wall notch, and the notch is located at the right side of the third lower conductive heat dissipation copper plate; two DC input-end conductive copper bars are connected and fixedly provided on the lower conductive heat dissipation copper plate, wherein the first DC input-end conductive copper bar is connected and fixedly provided on the second lower conductive heat dissipation copper plate and close to the U-shaped notch position, and the second DC output-end conductive copper bar is connected and fixedly provided on the third lower conductive heat dissipation copper plate and close to the notch side, and the two DC output-end conductive copper bars are distributed in parallel in space. Improve the simplicity and compactness of the heat dissipation coating structure of the capacitor core group by the lower conductive heat dissipation copper plate, improve the reasonableness, reliability and effectiveness of the heat dissipation and conductive distribution between the lower conductive heat dissipation copper plate and the conductive copper busbar structure at the DC output end, and improve the simplicity, stability, reliability and effectiveness of the spatial fusion of the mutual buckling between the upper and lower conductive heat dissipation copper plates to form a coating cavity for the capacitor core group.

[0007] Preferably, the special-shaped sealing ring has an L-shaped sealing ring sleeve groove structure, the special-shaped sealing ring comprises a first sealing ring wall body, a second sealing ring wall body and a third sealing ring wall body, the first sealing ring wall body, the second sealing ring wall body and the third sealing ring wall body are connected to each other as a whole, wherein the first sealing ring wall body is folded 90 degrees at both ends in its length direction and is extended and connected with a second sealing ring wall body, a third sealing ring wall body is extended and connected between the outer ends of the two second sealing ring walls, and the wall height of the third sealing ring wall body is lower than the wall height of the first sealing ring wall body and forms a wall height difference, there is a wall separation space distance between the third sealing ring wall body and the first sealing ring wall body, the space formed by the wall separation space distance and the wall height difference constitutes an L-shaped sealing ring sleeve groove space, and the L-shaped sealing ring sleeve groove space is used for sleeve-through sealing connection of the conductive copper busbar at the AC output end and the conductive copper busbar at the DC input end. Improve the reliability, stability and effectiveness of the sleeve seal between the special-shaped sealing ring and the conductive copper busbar at the AC output end and the conductive copper busbar at the DC input end, improve the packaging sealing and product quality between the conductive copper busbar and the plastic package shell of the capacitor, and also improve the electrical safety between the capacitor terminals, improve product production efficiency and product quality consistency.

[0008] Preferably, the special-shaped sealing ring is made of elastic rubber material. The manufacturing cost is low, the sealing insulation is stable and reliable, the sleeve sealing between the special-shaped sealing ring and the conductive copper bar at the AC output end and the conductive copper bar at the DC input end is improved, the sealing performance and product quality between the conductive copper bar and the capacitor plastic package shell are improved, the electrical safety between the capacitor terminals is improved, and the product production efficiency and product quality consistency are improved.

[0009] Preferably, the special-shaped sealing ring sleeve-through notch where the wall height difference is located is arranged toward the side where the upper conductive heat dissipation copper bar and the lower conductive heat dissipation copper bar are located. This improves the reliability, stability and effectiveness of the sleeve-through seal of each contact surface between the special-shaped sealing ring and the conductive copper bar at the AC output end and the conductive copper bar at the DC input end, improves the packaging sealing and product quality between the conductive copper bar and the plastic-sealed shell of the capacitor, and also improves the electrical safety between the capacitor terminals, and improves product production efficiency and product quality consistency.

[0010] Preferably, when the conductive copper bar at the AC output end and the conductive copper bar at the DC input end are provided with a special-shaped sealing ring, the conductive copper bar at the AC output end and the conductive copper bar at the DC input end both adopt an L-shaped conductive copper bar structure at the output end, wherein the short-side copper bar of the L-shape is used for fixed connection with the upper conductive heat dissipation copper plate or the lower conductive heat dissipation copper plate, and the long-side copper bar of the L-shape is used for electrically connecting with the conductive input or conductive output of the external circuit; the special-shaped sealing ring is provided for sealing connection at the 90-degree folded section of the L-shaped conductive copper bar structure at the output end. The reliability, stability and effectiveness of the sealing of the contact surfaces between the special-shaped sealing ring and the conductive copper bar at the AC output end and the conductive copper bar at the DC input end are improved, the sealing performance and product quality of the conductive copper bar and the plastic-sealed shell of the capacitor are improved, the electrical safety between the capacitor terminals is improved, and the production efficiency and product quality consistency of the product are improved.

[0011] Preferably, the safety capacitor adopts a safety capacitor combination structure of two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor, two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor are arranged side by side on the same side of a short side of the capacitor core group and are electrically connected with the capacitor core group and the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate, and the safety capacitor and the capacitor core group are arranged together to form a rectangular capacitor core group overall structure; forming a three-way conductive copper bar distribution structure of the grounding end conductive copper bar, two AC output end conductive copper bars and two DC input end conductive copper bars on the rectangular parallelepiped, and the grounding end conductive copper bar is independent and far away from the two AC output end conductive copper bars and the two DC input end conductive copper bars. Improve the flexibility and effectiveness of the filtering effect of different safety capacitors in the anti-interference circuit, the built-in integration and spatial distribution of safety capacitors are reasonable, improve the shortest path of the capacitor and the optimization of the filtering effect, and improve the safety, reliability and effectiveness of the product.

[0012] Preferably, the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are provided with a plurality of hollow structures with a plurality of square hollow windows arranged and distributed and a plurality of concave and convex grooves arranged and distributed for welding positioning of the end face of the capacitor inner core, so as to improve the high-speed effectiveness of heat dissipation of the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate themselves, the stable and reliable effectiveness of packaging curing, and the stable and reliable effectiveness of welding of the end face of the capacitor inner core.

[0013] The beneficial effects of the present invention are as follows: the three-way conductive copper bar distribution structure not only improves the electrical safety of the capacitor in the circuit application, but also improves the rationality of the electrical connection space distribution with the IGBT module controller, which is more conducive to the overall miniaturization development of the controller, the structure is more reasonable and compact, the product volume is more compact and smaller, the electrical safety is high, and the filtering effect is better; the fusion and embedding of the special-shaped sealing ring guarantees the sealing and product quality between the conductive copper bar and the plastic-sealed shell of the capacitor to a greater extent, and also improves the electrical safety between the capacitor terminals, improves the product production efficiency and product quality consistency; the built-in integration and rationality of the spatial distribution of the safety capacitor improve the shortest path of the capacitor and optimize the filtering effect; the capacitor core group accommodating slot cavity formed by the mutually buckled U-shaped slot structure guarantees the effective heat dissipation area utilization of the capacitor core group to the greatest extent and the structure is simple, compact, stable, reliable and effective. It can be used as a key component for DC-AC inverter conversion, filtering, stabilizing DC voltage, providing instantaneous capacity exchange, low inductance design, can save the overvoltage absorption circuit, and the circuit is more concise. Built-in safety capacitors can further filter out harmonics and reduce EMC. BRIEF DESCRIPTION OF THE DRAWINGS The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Figure 1 It is a structural schematic diagram of the front of the capacitor packaging shell for the new energy passenger car controller of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the capacitor packaging shell for the novel new energy passenger vehicle controller of the present invention observed from another direction.

[0016] Figure 3 The present invention is a schematic diagram of the top view of the capacitor packaging shell for the new energy passenger vehicle controller.

[0017] Figure 4 It is a structural schematic diagram of the capacitor packaging shell for the novel new energy passenger vehicle controller of the present invention observed from another direction.

[0018] Figure 5 The invention discloses a schematic structural diagram of a special-shaped sealing ring in the front middle of a capacitor packaging shell for a new-energy passenger vehicle controller.

[0019] Figure 6 It is a structural schematic diagram of a special-shaped sealing ring in the front middle of a capacitor packaging shell for a new-energy passenger vehicle controller according to the present invention, viewed from another direction.

[0020] Figure 7 The invention discloses a schematic diagram of the structure of a conductive heat dissipation copper plate in the front middle and lower part of a capacitor packaging shell for a new type of new energy passenger vehicle controller.

[0021] Figure 8The invention discloses a schematic structural diagram of a conductive heat dissipation copper plate in the front middle upper portion of a capacitor packaging shell for a new type of new energy passenger vehicle controller. DETAILED DESCRIPTION

[0022] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 In the embodiment shown, a new type of capacitor for a new energy passenger car controller includes a capacitor packaging shell and a capacitor core group 40, and also includes an upper conductive heat dissipation copper plate 10, a lower conductive heat dissipation copper plate 20, an AC output conductive copper bar, a DC input conductive copper bar, a safety capacitor, a grounding conductive copper bar and a special-shaped sealing ring. The upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are both U-shaped slot structures as a whole. The capacitor core group is accommodated in a slot cavity formed by the U-shaped slot structure of the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate that are buckled together in opposite directions; two AC output conductive copper bars are respectively connected and fixed to the two side outer walls of the U-shaped slot structure of the upper conductive heat dissipation copper plate, and the lower conductive heat dissipation copper plate is connected to the upper conductive heat dissipation copper plate. Two DC input conductive copper bars are connected and fixedly arranged on the two side outer walls of the U-shaped slot body structure; a safety capacitor is arranged on the same side of a short side of the capacitor core group and is connected with a grounding conductive copper bar, which is arranged at the outside of the slot cavity mouth, and the grounding conductive copper bar is vertically arranged with the two AC output conductive copper bars and the two DC input conductive copper bars in space, forming a three-way conductive copper bar distribution structure in which the grounding conductive copper bar is independent and far away from the two AC output conductive copper bars and the two DC input conductive copper bars; the special-shaped sealing ring is connected and sealed at the inner ends of the AC output conductive copper bar and the DC input conductive copper bar and is connected and fixed to the folded part where the heat dissipation copper plate is connected.

[0023] Upper conductive heat dissipation copper plate 10 (see Figure 8) includes a first upper conductive heat dissipation copper plate 13, a second upper conductive heat dissipation copper plate 14 and a third upper conductive heat dissipation copper plate 15, the first upper conductive heat dissipation copper plate 13 is folded 90 degrees at its two long sides to extend and connect with the second upper conductive heat dissipation copper plate 14 and the third upper conductive heat dissipation copper plate 15, and the second upper conductive heat dissipation copper plate 14 and the third upper conductive heat dissipation copper plate 15 are folded 90 degrees in the same direction to extend and connect to the first upper conductive heat dissipation copper plate 13, and the whole together forms a U-shaped slot structure; and the length dimension of the third upper conductive heat dissipation copper plate 15 is smaller than the length dimension of the first upper conductive heat dissipation copper plate 13 in the same direction , forming a notch-shaped U-shaped slot structure with a notch 16 on the side wall of the upper conductive heat dissipation copper plate slot, the notch is located at the left side of the third upper conductive heat dissipation copper plate 15; two AC output conductive copper bars are connected and fixed on the upper conductive heat dissipation copper plate 10, wherein the first AC output conductive copper bar 11 is connected and fixed on the first upper conductive heat dissipation copper plate 13 and connected to the second upper conductive heat dissipation copper plate 14, and the second AC output conductive copper bar 12 is connected and fixed on the third upper conductive heat dissipation copper plate 15 and close to the notch side, and the two AC output conductive copper bars are distributed in parallel in space. The first AC output conductive copper bar 11 adopts a flat L-shaped conductive copper bar structure with a 90-degree fold, and the flat surface of the first AC output conductive copper bar 11 is connected and fixed with the first upper conductive heat dissipation copper plate 13. The second AC output conductive copper bar 12 adopts a 90-degree folded L-shaped copper bar structure, and the 90-degree folded copper bars have the same size and width. The first AC output end conductive copper busbar 11 and the second AC output end conductive copper busbar 12 have simple structures and low manufacturing processes, and are stably and reliably connected to the upper conductive heat dissipating copper plate 10 . The conductive connection of the terminals is stable, reliable and has low impedance.

[0024] Lower conductive heat dissipation copper plate 20 (see Figure 7) includes a first lower conductive heat dissipation copper plate 23, a second lower conductive heat dissipation copper plate 24 and a third lower conductive heat dissipation copper plate 25, the first lower conductive heat dissipation copper plate 23 is folded 90 degrees at its two long sides and extended to be connected with the second lower conductive heat dissipation copper plate 24 and the third lower conductive heat dissipation copper plate 25, and the second lower conductive heat dissipation copper plate 24 and the third lower conductive heat dissipation copper plate 25 are both folded 90 degrees in the same direction and extended to be connected to the first lower conductive heat dissipation copper plate 23, and the whole together forms a U-shaped slot structure; and the length of the third lower conductive heat dissipation copper plate 25 is smaller than the length of the first lower conductive heat dissipation copper plate 23 in the same direction. The size of the slot body is formed to form a notch-type U-shaped slot body structure with a notch 26 on the side wall of the lower conductive heat dissipation copper plate slot body, and the notch is located on the right side of the third lower conductive heat dissipation copper plate 25; two DC input-end conductive copper bars are connected and fixedly provided on the lower conductive heat dissipation copper plate 20, wherein the first DC input-end conductive copper bar 21 is connected and fixedly provided on the second lower conductive heat dissipation copper plate 24 and is close to the U-shaped notch position, and the second DC output-end conductive copper bar 22 is connected and fixedly provided on the third lower conductive heat dissipation copper plate 25 and is close to the notch side, and the two DC output-end conductive copper bars are distributed in a parallel state in space. The first DC input-end conductive copper bar 21 adopts a 90-degree folded L-shaped folded copper bar structure, and has a special-shaped composite first DC input-end conductive copper bar structure in which the size of the 90-degree folded connection fixing seat of the input-end conductive copper bar is larger than the width size of the conductive connection external terminal, so that the first DC input-end conductive copper bar 21 has a notch-shaped conductive connection external terminal structure, and the notch portion will be encapsulated in the capacitor packaging shell during packaging (see Figure 2 The second DC output end conductive copper bar 22 adopts an L-shaped copper bar structure folded 90 degrees, and the 90-degree folded copper bar has the same size and width.

[0025] Special-shaped sealing ring 30 (see Figure 5 , Figure 6) has an L-shaped sealing ring sleeve groove structure, the special-shaped sealing ring 30 includes a first sealing ring wall body 32, a second sealing ring wall body 34 and a third sealing ring wall body 33, the first sealing ring wall body 32, the second sealing ring wall body 34 and the third sealing ring wall body 33 are connected to each other as a whole, wherein the first sealing ring wall body 32 is folded 90 degrees at both ends in its length direction and is extended and connected with the second sealing ring wall body 34, and the third sealing ring wall body 33 is extended and connected between the outer ends of the two second sealing ring wall bodies 34, and the wall height of the third sealing ring wall body 33 is lower than the wall height of the first sealing ring wall body and forms a wall height difference 35, and there is a wall separation space distance 31 between the third sealing ring wall body 33 and the first sealing ring wall body 32, and the space formed by the wall separation space distance 31 and the wall height difference 35 constitutes an L-shaped sealing ring sleeve groove space, and the L-shaped sealing ring sleeve groove space is used for sleeve-through sealing connection of the AC output end conductive copper busbar and the DC input end conductive copper busbar. The first sealing ring wall 32, the second sealing ring wall 34 and the third sealing ring wall 33 are all sealing ring wall structures of rectangular parallelepiped structure. The special-shaped sealing ring 30 is made of elastic rubber material. The special-shaped sealing ring sleeve groove where the wall height difference 35 is located is set in the direction of the side where the upper conductive heat dissipation copper bar and the lower conductive heat dissipation copper bar are located. When the AC output end conductive copper bar and the DC input end conductive copper bar are set with a special-shaped sealing ring 30, the AC output end conductive copper bar and the DC input end conductive copper bar both adopt an L-shaped output end conductive copper bar structure, wherein the L-shaped short side copper bar is used to be fixedly connected to the upper conductive heat dissipation copper plate or the lower conductive heat dissipation copper plate, and the L-shaped long side copper bar is used to be electrically connected to the conductive input or conductive output of the external circuit; the special-shaped sealing ring set sealing connection is set at the 90-degree folded section of the L-shaped output end conductive copper bar structure.

[0026] The safety capacitor 50 adopts a safety capacitor combination structure of two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor. The two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor are arranged side by side on the same side of a short side of the capacitor core group and are electrically connected to the capacitor core group and the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate. The safety capacitor and the capacitor core group are arranged together to form a rectangular capacitor core group overall structure; a three-way conductive copper bar distribution structure is formed on the rectangular parallelepiped, including a grounding conductive copper bar, two AC output conductive copper bars, and two DC input conductive copper bars, and the grounding conductive copper bar is independent and far away from the two AC output conductive copper bars and the two DC input conductive copper bars. The upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are provided with a plurality of square hollow windows arranged and distributed in a hollow structure and a plurality of arranged and distributed capacitor core end face welding positioning concave-convex grooves 13.

[0027] In the description of the positional relationship of the present invention, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the embodiments and simplifying the description. They 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 should not be understood as a limitation on the present invention.

[0028] The above content and structure describe the basic principle, main features and advantages of the product of the present invention, which should be understood by those skilled in the art. The above examples and descriptions are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of capacitor for a new energy passenger car controller, comprising a capacitor packaging shell and a capacitor core group, characterized in that: It also includes an upper conductive heat dissipation copper plate, a lower conductive heat dissipation copper plate, an AC output conductive copper bar, a DC input conductive copper bar, a safety capacitor, a grounding conductive copper bar and a special-shaped sealing ring. The upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are both U-shaped slot structures. The capacitor core group is accommodated in a slot cavity formed by the U-shaped slot structure of the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate that are buckled together. The two AC output conductive copper bars are respectively connected and fixed on the two side outer walls of the U-shaped slot structure of the upper conductive heat dissipation copper plate, and the lower conductive heat dissipation copper plate is connected and fixed to the U-shaped slot with two DC input conductive copper bars. On the outer walls of both sides of the structure; a safety capacitor is arranged on the same side of a short side of the capacitor core group and is connected with a grounding conductive copper bar, the grounding conductive copper bar is arranged outside the slot cavity mouth, and the grounding conductive copper bar is vertically arranged with the two AC output conductive copper bars and the two DC input conductive copper bars in space, forming a three-way conductive copper bar distribution structure in which the grounding conductive copper bar is independent and far away from the two AC output conductive copper bars and the two DC input conductive copper bars; the special-shaped sealing ring is connected and sealed at the inner ends of the AC output conductive copper bar and the DC input conductive copper bar, which are connected and fixed to the heat dissipation copper plate through the L-shaped sealing ring sleeve passing through the slot.

2. The capacitor for the new energy passenger car controller according to claim 1 is characterized in that: The upper conductive heat dissipation copper plate comprises a first upper conductive heat dissipation copper plate, a second upper conductive heat dissipation copper plate and a third upper conductive heat dissipation copper plate, wherein the first upper conductive heat dissipation copper plate is folded 90 degrees at its two long sides and is extended to be connected with the second upper conductive heat dissipation copper plate and the third upper conductive heat dissipation copper plate, and the second upper conductive heat dissipation copper plate and the third upper conductive heat dissipation copper plate are both folded 90 degrees in the same direction and are extended to be connected to the first upper conductive heat dissipation copper plate, and the whole together forms a U-shaped slot structure; and the length dimension of the third upper conductive heat dissipation copper plate is smaller than the length dimension of the first upper conductive heat dissipation copper plate in the same direction, forming a notch-type U-shaped slot structure with a slot side wall notch, and the notch is located at the left side of the third upper conductive heat dissipation copper plate; two AC output-end conductive copper bars are connected and fixedly provided on the upper conductive heat dissipation copper plate, wherein the first AC output-end conductive copper bar is connected and fixedly provided on the first upper conductive heat dissipation copper plate and is connected to the second upper conductive heat dissipation copper plate, and the second AC output-end conductive copper bar is connected and fixedly provided on the third upper conductive heat dissipation copper plate and is close to the notch side, and the two AC output-end conductive copper bars are distributed in parallel in space.

3. The capacitor for the new energy passenger car controller according to claim 1 is characterized in that: The lower conductive heat dissipation copper plate comprises a first lower conductive heat dissipation copper plate, a second lower conductive heat dissipation copper plate and a third lower conductive heat dissipation copper plate, the first lower conductive heat dissipation copper plate is folded 90 degrees at two long sides thereof, and the second lower conductive heat dissipation copper plate and the third lower conductive heat dissipation copper plate are folded 90 degrees in the same direction and extended to be connected to the first lower conductive heat dissipation copper plate, and the whole together forms a U-shaped slot structure; and the length dimension of the third lower conductive heat dissipation copper plate is smaller than the length dimension of the first lower conductive heat dissipation copper plate in the same direction, forming a notch-type U-shaped slot structure with a slot side wall notch, and the notch is located at the right side of the third lower conductive heat dissipation copper plate; two DC input-end conductive copper bars are connected and fixedly provided on the lower conductive heat dissipation copper plate, wherein the first DC input-end conductive copper bar is connected and fixedly provided on the second lower conductive heat dissipation copper plate and close to the U-shaped notch position, and the second DC output-end conductive copper bar is connected and fixedly provided on the third lower conductive heat dissipation copper plate and close to the notch side, and the two DC output-end conductive copper bars are distributed in parallel in space.

4. The capacitor for a new type of new energy passenger vehicle controller according to claim 1, characterized in that: The special-shaped sealing ring has an L-shaped sealing ring sleeve groove structure, and the special-shaped sealing ring includes a first sealing ring wall body, a second sealing ring wall body and a third sealing ring wall body. The first sealing ring wall body, the second sealing ring wall body and the third sealing ring wall body are connected to each other as a whole, wherein the first sealing ring wall body is folded 90 degrees at both ends in its length direction and is extended and connected with a second sealing ring wall body, and a third sealing ring wall body is extended and connected between the outer ends of the two second sealing ring walls, and the wall height of the third sealing ring wall body is lower than the wall height of the first sealing ring wall body and forms a wall height difference, and there is a wall separation space distance between the third sealing ring wall body and the first sealing ring wall body, and the space formed by the wall separation space distance and the wall height difference constitutes an L-shaped sealing ring sleeve groove space, and the L-shaped sealing ring sleeve groove space is used for sleeve-through sealing connection of the AC output end conductive copper busbar and the DC input end conductive copper busbar.

5. The capacitor for the new energy passenger vehicle controller according to claim 4 is characterized in that: The first sealing ring wall body, the second sealing ring wall body and the third sealing ring wall body are all sealing ring wall body structures in the shape of a rectangular parallelepiped.

6. The capacitor for a new type of new energy passenger vehicle controller according to claim 1, 4 or 5, characterized in that: The special-shaped sealing ring is made of elastic rubber material.

7. The capacitor for a new type of new energy passenger vehicle controller according to claim 4, characterized in that: The special-shaped sealing ring sleeve-through notch where the wall height difference is located is arranged toward the side where the upper conductive heat dissipation copper bar and the lower conductive heat dissipation copper bar are located.

8. The capacitor for a new type of new energy passenger vehicle controller according to claim 1, characterized in that: When the AC output conductive copper bar and the DC input conductive copper bar are provided with a special-shaped sealing ring in the suit, the AC output conductive copper bar and the DC input conductive copper bar both adopt an L-shaped output conductive copper bar structure, wherein the short side copper bar of the L-shape is used to be fixedly connected to the upper conductive heat dissipation copper plate or the lower conductive heat dissipation copper plate, and the long side copper bar of the L-shape is used to be electrically connected to the conductive input or conductive output of the external circuit; the special-shaped sealing ring suit is sealed and connected at the 90-degree folded section of the L-shaped output conductive copper bar structure.

9. The capacitor for a new type of new energy passenger vehicle controller according to claim 1, characterized in that: The safety capacitor adopts a safety capacitor combination structure of two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor. The two Y capacitors, two X capacitors, or one X capacitor and one Y capacitor are arranged in parallel on the same side of a short side of a capacitor core group and are electrically connected with the capacitor core group and the upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate. The safety capacitor and the capacitor core group are arranged together to form a rectangular capacitor core group overall structure; a three-way conductive copper bar distribution structure is formed on the rectangular parallelepiped, including a grounding conductive copper bar, two AC output conductive copper bars, and two DC input conductive copper bars, and the grounding conductive copper bar is independent and far away from the two AC output conductive copper bars and the two DC input conductive copper bars.

10. The capacitor for a new type of new energy passenger vehicle controller according to claim 1, 2 or 3, characterized in that: The upper conductive heat dissipation copper plate and the lower conductive heat dissipation copper plate are provided with a hollow structure with a plurality of square hollow windows arranged and distributed and a plurality of capacitor inner core end surface welding positioning concave-convex grooves arranged and distributed.

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