CN115472429A

CN115472429A - Electric automobile capacitor composite copper bar with stable structure

Info

Publication number: CN115472429A
Application number: CN202211291652.6A
Authority: CN
Inventors: 胡明泽; 张胜锰; 蒋立树
Original assignee: Zhejiang Guanhua Electric Co ltd
Current assignee: Zhejiang Guanhua Electric Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2022-12-13
Anticipated expiration: 2042-10-21
Also published as: CN115472429B

Abstract

The invention provides a composite copper bar of an electric automobile capacitor with a stable structure, which relates to the technical field of electric automobiles and comprises an upper copper bar, a lower copper bar and a shell, wherein the shell comprises a middle transverse plate, an upper groove arranged on the upper side of the middle transverse plate and used for placing the upper copper bar, and a lower groove arranged on the lower side of the middle transverse plate and used for placing the lower copper bar, an upper pin is arranged at the end part of the upper copper bar, a lower pin is arranged at the end part of the lower copper bar, a first hole for facilitating the upper pin to pass through is arranged on the side wall of the upper groove, a second hole for facilitating the lower pin to pass through is arranged on one side of the lower groove far away from the first hole, and the shell is an insulating piece. According to the invention, the shell is used as the middle insulation plate, the upper groove and the lower groove on the upper side and the lower side of the shell can be used for fixedly mounting the upper copper bar and the lower copper bar, the mounting process difficulty of the upper copper bar and the lower copper bar is effectively reduced, the upper pins and the lower pins are respectively led out from the two sides of the shell, the whole composite copper bar is not easy to wear, the risk of conduction of foreign matters is also reduced, and the service life is longer.

Description

Electric automobile capacitor composite copper bar with stable structure

Technical Field

The invention relates to the technical field of electric automobiles, in particular to a stable-structure composite copper bar of an electric automobile capacitor.

Background

The capacitor of the new energy electric automobile is applied to the motor control inverter and mainly used for energy storage and filtering. In order to reduce the inductance of the capacitor, the new energy electric vehicle capacitor generally adopts a composite copper bar as a capacitor electrode.

For example, chinese patent invention CN204760236U discloses a film capacitor for an automobile, which comprises a leading-out end composite copper bar arranged in a shell, wherein the leading-out end composite copper bar comprises an upper copper bar, a middle insulating plate and a lower copper bar, one end of a capacitor core is connected with the upper copper bar by a welding copper plate, the other end of the capacitor core is connected with the lower copper bar by the welding copper plate, the capacitor can improve the capacitance process level and reduce the volume, the electrical property effectively shields high-frequency induced eddy current, the trend of current is reasonably distributed, the capacitance reaches the minimum ESR and ESL, the capacitance heating is greatly reduced, the heat dissipation capacity of the capacitor is enhanced, the product performance is better, and the product is safer and more reliable,

but the above-mentioned compound copper bar structure of condenser still has following problem: whole condenser composite copper bar structure is complicated, welding and insulating isolated technological requirement between the upper and lower copper bar are very high, the fixed effect of upper and lower copper bar is poor, when the concatenation of two-layer copper bar about all needing to aim at completely, the pin position of copper bar about and about all need, the installation sets up the degree of difficulty big, and the pin position of upper and lower copper bar spills to set up and is nearer, not only the pin is easy to wear and tear, and in case there is electrically conductive foreign matter to fall on pin position, it switches on copper bar from top to bottom to be extremely likely, whole condenser defeat, short service life.

Therefore, in order to solve the above problems, it is necessary to design a reasonable and efficient electric vehicle capacitor composite copper bar with stable structure.

Disclosure of Invention

The invention aims to provide a stable-structure composite copper bar of an electric vehicle capacitor, which adopts a shell as a middle insulating plate, and an upper groove and a lower groove on the upper side and the lower side of the shell can be used for fixedly mounting an upper copper bar and a lower copper bar, so that the mounting process difficulty of the upper copper bar and the lower copper bar is effectively reduced, upper pins and lower pins are respectively led out from two sides of the shell, the whole composite copper bar is not easy to wear, the risk of conduction by foreign matters is reduced, and the service life is longer.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the utility model provides a stable in structure's compound copper bar of electric automobile condenser, includes the copper bar, down the copper bar and is used for the installation go up the copper bar and the casing of copper bar down, the casing include middle diaphragm, set up in being used for of middle diaphragm upside place go up the upper groove of copper bar and set up in the middle diaphragm downside is used for placing down the lower groove of copper bar, it is provided with the pin to go up the copper bar tip, the copper bar tip is provided with down the pin down, the lateral wall of going up the groove is provided with and is used for the convenience go up the first hole that the pin passed, the groove is kept away from down one side in first hole is provided with and is used for the convenience the second hole that the pin passed down, the casing is the insulator.

Preferably, the end of the upper copper bar is provided with a pin plate, and the upper pin is arranged on one side of the pin plate far away from the upper copper bar.

Preferably, the pin plate extends perpendicular to the direction from the upper copper bar to the lower copper bar, and a transverse plate hole for the pin plate to pass through is formed in the middle transverse plate.

Preferably, the middle transverse plate is provided with a partition plate extending towards the lower copper bar, and the partition plate is positioned between the lower copper bar and the pin plate.

Preferably, a third hole for facilitating the upper pin to pass through is arranged on one side of the lower groove away from the second hole.

Preferably, the first hole and the third hole are both elongated holes, and the first hole and the third hole are arranged in parallel.

Preferably, the upper groove and the lower groove are both provided with pouring sealant, and the pouring sealant is a heat-conducting high-temperature-resistant part.

Preferably, the notch of the upper groove is provided with a first cover plate, and the notch of the lower groove is provided with a second cover plate.

Preferably, the first cover plate and the second cover plate are both provided with heat dissipation holes.

Preferably, the housing is an integrally formed part.

The electric automobile capacitor composite copper bar with the stable structure has the beneficial effects that: adopt the casing as middle insulation board to the upper groove of downside and lower groove can carry out fixed mounting to last copper bar and lower copper bar on the casing, effectively reduce the mounting process degree of difficulty of copper bar from top to bottom, go up the pin and also draw forth from the both sides of casing respectively with lower pin, whole compound copper bar is difficult for wearing and tearing, has also reduced the risk that receives the foreign matter and switches on, and life is longer.

Drawings

Fig. 1 is a schematic overall structure diagram of one embodiment of a structurally stable electric vehicle capacitor composite copper bar of the present invention;

fig. 2 is a schematic perspective view of a housing in an embodiment of a structurally stable electric vehicle capacitor composite copper bar according to the present invention;

fig. 3 is a schematic overall structure diagram of another embodiment of the structurally stable composite copper bar of the capacitor of the electric vehicle according to the present invention;

in the figure: 1. go up copper bar, 11, go up the pin, 12, the pin board, 2, lower copper bar, 21, lower pin, 3, casing, 31, middle diaphragm, 311, diaphragm hole, 312, division board, 32, upper chute, 321, first hole, 33, lower groove, 331, second hole, 332, third hole.

Detailed Description

The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and steps set forth in these embodiments and steps do not limit the scope of the invention unless specifically stated otherwise.

Meanwhile, it should be understood that the flows in the drawings are not merely performed individually for convenience of description, but a plurality of steps are performed alternately with each other.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

The first embodiment is as follows: as shown in fig. 1 and 2, which are only one embodiment of the present invention, a stable-structure composite copper bar for an electric vehicle capacitor includes an upper copper bar 1, a lower copper bar 2, and a housing 3 for mounting the upper copper bar 1 and the lower copper bar 2, where the housing 3 includes a middle horizontal plate 31, an upper groove 32 disposed on an upper side of the middle horizontal plate 31 and used for placing the upper copper bar 1, and a lower groove 33 disposed on a lower side of the middle horizontal plate 31 and used for placing the lower copper bar 2, an upper pin 11 is disposed at an end of the upper copper bar 1, a lower pin 21 is disposed at an end of the lower copper bar 2, a first hole 321 for facilitating the upper pin 11 to pass through is disposed on a side wall of the upper groove 32, a second hole 331 for facilitating the lower pin 21 to pass through is disposed on a side of the lower groove 33 away from the first hole 321, and the housing 3 is an insulator.

In the invention, the surrounding plate is arranged around the shell 3, four end parts of the middle transverse plate 31 are respectively connected to the middle part of the inner side of the surrounding plate, so that the shell 3 is divided into an upper space and a lower space by the middle transverse plate 31, an upper groove 32 is formed on the upper side of the shell for placing the upper copper bar 1, a lower groove 33 is formed on the lower side of the shell for placing the lower copper bar 2, and the whole shell 3 is an insulating piece, so that the whole shell 3 plays a role of a middle insulating plate to insulate and separate the upper copper bar 1 and the lower copper bar 2.

Here, go up the area of copper bar 1 and just equal to the size of last groove 32, the area of lower copper bar 2 just equals the size of lower groove 33, then goes up copper bar 1 and just imbeds to last inslot 32, and lower copper bar 2 just imbeds to lower groove 33 in, then goes up copper bar 1 and lower copper bar 2's the installation degree of difficulty greatly reduced, need not to aim at the installation that the operation can accomplish copper bar 1 and lower copper bar 2.

Moreover, after the upper copper bar 1 and the lower copper bar 2 are installed, the shell 3 can protect the outer sides of the upper copper bar 1 and the lower copper bar 2, and the surface abrasion of the upper copper bar 1 and the surface abrasion of the lower copper bar 2 are effectively prevented.

In addition, the end of the upper copper bar 1 is provided with an upper pin 11, the side wall of the upper groove 32 is provided with a first hole 321 for the upper pin 11 to pass through, actually, after the upper copper bar 1 is firstly installed in the upper groove 32, the upper pin 11 is welded to the end of the upper copper bar 1 through the first hole 321, and at this time, the position of the whole upper copper bar 1 is fixed, and the welding mode of the welded upper pin 11 can be freely selected; in addition, the first hole 321 can also limit and protect the upper pin 11 to a certain extent, so as to effectively prevent the welding position of the upper pin 11 from receiving external force or being clamped by foreign matters.

Similarly, the end of the lower copper bar 2 is provided with a lower pin 21, one side of the lower groove 33, which is away from the first hole 321, is provided with a second hole 331 for facilitating the lower pin 21 to pass through, and after the lower copper bar 2 is installed in the lower groove 33, the lower pin 21 is welded to the end of the lower copper bar 2 through the second hole 331, and at this time, the whole lower copper bar 2 is fixed in position, and the welding mode of the welded lower pin 21 can be freely selected; and the second hole 331 can also play a limiting and certain protective role for the lower pin 21, effectively avoiding the welding part of the lower pin 21 from receiving external force or being blocked by foreign matters.

In addition, the upper pin 11 and the lower pin 21 are preferably welded in a spot welding seam and a circumferential silver welding seam mode, so that the welding contact area between the upper copper bar 1 and the upper pin 11 and between the lower copper bar 2 and the lower pin 21 is increased, the welding firmness is enhanced, the contact resistance is reduced, the heating of the welding part of the composite copper bar is reduced, the composite copper bar is more reliable in vibration and impact resistance, and the service life is longer.

It should be noted that, first hole 321 and second hole 331 set up respectively in the left and right sides of casing 3, have pulled open the distance between last pin 11 and the lower pin 21, effectively reduce the risk that the foreign matter will go up copper bar 1 and lower copper bar 2 and switch on, and a plurality of compound copper bars can range upon range of the placing from top to bottom in addition, do not worry about that the extrusion damages last copper bar 1, lower copper bar 2, go up pin 11 and lower pin 21.

When the composite copper bar is needed to be used (only one capacitor core is needed), the capacitor core is only needed to be transversely placed on the upper side of the shell 3, one end of the capacitor core is connected with the upper pin 11 through the welding copper plate, and the other end of the capacitor core is connected with the lower pin 21 through the welding copper plate.

According to the electric vehicle capacitor composite copper bar with the stable structure, the shell is used as the middle insulating plate, the upper groove and the lower groove on the upper side and the lower side of the shell can be used for fixedly mounting the upper copper bar and the lower copper bar, the mounting process difficulty of the upper copper bar and the lower copper bar is effectively reduced, the upper pins and the lower pins are respectively led out from the two sides of the shell, the whole composite copper bar is not easy to wear, the risk of conduction of foreign matters is reduced, and the service life is longer.

In the second embodiment, as shown in fig. 1 to 3, which is only one embodiment of the present invention, on the basis of the first embodiment, in the electric automobile capacitor composite copper bar with a stable structure of the present invention, a pin plate 12 is disposed at an end of the upper copper bar 1, the upper pin 11 is disposed at a side of the pin plate 12 away from the upper copper bar 1, the pin plate 12 is perpendicular to the upper copper bar 1 and extends toward the lower copper bar 2, and a horizontal plate hole 311 for the pin plate 12 to pass through is disposed on the middle horizontal plate 31, as shown in fig. 1.

In addition, a partition plate 312 extending towards the lower copper bar 2 is arranged on the middle transverse plate 31, and the partition plate 312 is located between the lower copper bar 2 and the pin plate 12; a side of the lower groove 33 away from the second hole 331 is provided with a third hole 332 for facilitating the passage of the upper pin 11 therethrough.

Then, the area of the lower copper bar 2 is equal to the area of one side of the partition plate 312 in the lower groove 33, and the area of the other side of the partition plate 312 is equal to the cross-sectional area of the pin plate 12, so that the pin plate 12 can be just inserted into the side of the partition plate 312 away from the lower copper bar 2 in the lower groove 33 and clamped.

That is, the upper copper bar 1 and the pin plate 12 form an L-shaped structure, two sets of upper pins 11 are disposed on one side of the pin plate 12 away from the upper copper bar 1, and the two sets of upper pins 11 respectively penetrate through the first hole 321 and the third hole 332.

Preferably, the first hole 321 and the third hole 332 are both elongated holes, and the first hole 321 and the third hole 332 are arranged in parallel.

When the composite copper bar needs to be used (when two capacitor cores exist), the capacitor cores are only required to be vertically placed on the side face, close to the upper pins 11, of the shell 3, the outer side ends of the two capacitor cores are connected to the positions of the upper pins 11 in the two rows respectively through the welding copper plates, and the two capacitor cores are connected to the lower pins 21 through the welding copper plates by bypassing the shell 3.

It should be noted that the lower copper bar 2 may also be set to be an L-shaped structure, or may have a second pin plate that is perpendicular to the lower copper bar 2 and extends toward the upper copper bar 1, as shown in fig. 3, then there may be two rows of the lower pins 21, and extends out from one side of the housing 3 away from the upper pins 11, then when there are two capacitor cores, the capacitor cores may be vertically placed on the side of the housing 3 near the lower pins 21, the outer ends of the two capacitor cores are respectively connected to the two rows of the lower pins 21 through the welding copper plates, and the two capacitor cores are connected to the upper pins 11 through the welding copper plates by bypassing the housing 3.

Still referring to fig. 1 to 3, the third embodiment is only one embodiment of the present invention, and on the basis of any one of the above embodiments, pouring sealant is disposed in both the upper groove 32 and the lower groove 33 of the electric vehicle capacitor composite copper bar with a stable structure, the pouring sealant is a heat-conducting high-temperature-resistant member, and after the upper pin 11 is welded on the upper copper bar 1, the upper groove 32 is filled with the pouring sealant, so that the upper copper bar 1 is more stably disposed; similarly, after the lower copper bar 2 is welded with the lower pins 21, glue is filled in the lower grooves 33, so that the lower copper bar 2 is more stably arranged.

Or, a first cover plate is arranged at the notch of the upper groove 32, a second cover plate is arranged at the notch of the lower groove 33, the first cover plate can cover the upper groove 32 to prevent the upper copper bar 1 from being separated, and the second cover plate can cover the lower groove 33 to prevent the lower copper bar 2 from being separated.

Of course, the first cover plate and the second cover plate are both provided with heat dissipation holes for dissipating heat in the use process of the capacitor.

Finally, the shell 3 is an integrally formed part, and the anti-collision and anti-damage capacity of the whole shell 3 is better.

The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a stable in structure's compound copper bar of electric automobile condenser which characterized in that: including last copper bar (1), lower copper bar (2) and be used for the installation go up copper bar (1) and casing (3) of lower copper bar (2), casing (3) including middle diaphragm (31), set up in being used for placing of middle diaphragm (31) upside go up last groove (32) of copper bar (1) and set up in be used for placing of middle diaphragm (31) downside lower groove (33) of copper bar (2) down, it is provided with pin (11) to go up copper bar (1) tip, copper bar (2) tip is provided with down pin (21) down, the lateral wall of going up groove (32) is provided with and is used for the convenience go up first hole (321) that pin (11) passed, keep away from down groove (33) one side of first hole (321) is provided with and is used for the convenience second hole (331) that pin (21) passed down, casing (3) are the insulating part.

2. The electric automobile capacitor composite copper bar with the stable structure as claimed in claim 1, is characterized in that: the end part of the upper copper bar (1) is provided with a pin plate (12), and the upper pin (11) is arranged on one side, far away from the upper copper bar (1), of the pin plate (12).

3. The electric automobile capacitor composite copper bar with the stable structure as claimed in claim 2, is characterized in that: the foot guide plate (12) is perpendicular to the upper copper bar (1) and extends towards the lower copper bar (2), and a transverse plate hole (311) for allowing the foot guide plate (12) to penetrate is formed in the middle transverse plate (31).

4. The electric automobile capacitor composite copper bar with the stable structure as claimed in claim 3, is characterized in that: and a partition plate (312) extending towards the lower copper bar (2) is arranged on the middle transverse plate (31), and the partition plate (312) is positioned between the lower copper bar (2) and the pin plate (12).

5. The electric vehicle capacitor composite copper bar with the stable structure as claimed in claim 4, is characterized in that: the side, far away from the second hole (331), of the lower groove (33) is provided with a third hole (332) for facilitating the passing of the upper pin (11).

6. The electric automobile capacitor composite copper bar with the stable structure as claimed in claim 5, is characterized in that: the first hole (321) and the third hole (332) are both elongated holes, and the first hole (321) and the third hole (332) are arranged in parallel.

7. The electric vehicle capacitor composite copper bar with the stable structure as claimed in claim 1, wherein: all be provided with the casting glue in upper trough (32) and lower groove (33), the casting glue is heat conduction high temperature resistant spare.

8. The electric vehicle capacitor composite copper bar with the stable structure as claimed in claim 1, wherein: the notch of the upper groove (32) is provided with a first cover plate, and the notch of the lower groove (33) is provided with a second cover plate.

9. The electric vehicle capacitor composite copper bar with the stable structure as claimed in claim 8, wherein: and the first cover plate and the second cover plate are both provided with heat dissipation holes.

10. The electric automobile capacitor composite copper bar with the stable structure as claimed in claim 1, is characterized in that: the shell (3) is an integrally formed part.