Bus assembly, filtering assembly, motor controller and vehicle

Abstract

The utility model discloses a bus assembly, a filter assembly, a motor controller and a vehicle, the bus assembly comprises a direct current bus anode conducting strip, a direct current bus cathode conducting strip and an N-line conducting strip, the direct current bus anode conducting strip is suitable for being connected with the anode of a battery pack, the direct current bus cathode conducting strip is arranged on one side of the direct current bus anode conducting strip, and the N-line conducting strip is arranged on the other side of the direct current bus anode conducting strip. The direct-current bus cathode conducting strip is suitable for being connected with the cathode of the battery pack, and the N-line conducting strip is suitable for being connected with an equipotential point of the battery pack and a junction point of a three-phase winding of the motor; wherein the sectional area of the N line conducting strip is S1, the sectional area of the direct current bus positive electrode conducting strip is S2, the sectional area of the direct current bus negative electrode conducting strip is S3, and S1, S2 and S3 meet the relational expression that S1 is larger than S2, and S1 is larger than S3. By means of the arrangement, the self-heating function of the battery pack can be achieved, the spatial layout can be optimized, and the reliability of the filtering assembly can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a busbar component, a filter component, a motor controller and a vehicle. Background Art

[0002] In the related art, the filter component in the motor controller is a three-stage filter with a two-core main core. However, the flat laying method of the busbar conductive sheet will cause material waste on the structural space and magnetic ring material, and is not conducive to realizing a high power density motor controller. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a busbar assembly, which can ensure the inductance of the magnetic ring and achieve the purpose of compact volume.

[0004] The utility model further proposes a filtering component.

[0005] The utility model further proposes a motor controller.

[0006] The utility model further provides a vehicle.

[0007] According to the busbar assembly of the utility model, it includes: a DC bus positive conductive sheet, a DC bus negative conductive sheet and an N-line conductive sheet, wherein the DC bus positive conductive sheet is suitable for connecting to the positive electrode of a battery pack, the DC bus negative conductive sheet is arranged on one side of the DC bus positive conductive sheet, the DC bus negative conductive sheet is suitable for connecting to the negative electrode of the battery pack, and the N-line conductive sheet is suitable for connecting to the equipotential point of the battery pack and the junction point of the three-phase winding of the motor; wherein the cross-sectional area of ​​the N-line conductive sheet is S1, the cross-sectional area of ​​the DC bus positive conductive sheet is S2, the cross-sectional area of ​​the DC bus negative conductive sheet is S3, and S1, S2 and S3 satisfy the relationship: S1>S2, and S1>S3.

[0008] According to the busbar assembly of the utility model, the filter assembly can be connected to the battery pack by connecting the DC bus positive conductive sheet and the DC bus negative conductive sheet to the positive electrode and the negative electrode of the battery pack respectively, and the N-line conductive sheet is connected to the equipotential point of the battery pack and the junction point of the three-phase winding of the motor, so as to realize the self-heating function of the battery pack. The cross-sectional area of ​​the N-line conductive sheet is respectively larger than the cross-sectional area of ​​the DC bus positive conductive sheet and the cross-sectional area of ​​the DC bus negative conductive sheet, so as to optimize the spatial layout and improve the reliability of the filter assembly.

[0009] In some examples of the present invention, the width of the N-line conductive sheet is a, the width of the DC bus positive conductive sheet is b, and the width of the DC bus negative conductive sheet is c. a, b and c satisfy the relationship: a>b, and a>c.

[0010] In some examples of the present invention, the N-line conductive sheet is disposed between the DC bus positive conductive sheet and the DC bus negative conductive sheet, and the N-line conductive sheet, the DC bus positive conductive sheet and the DC bus negative conductive sheet are stacked.

[0011] In some examples of the present invention, the busbar assembly further includes: a shell, and the DC busbar positive conductive sheet, the DC busbar negative conductive sheet and the N-line conductive sheet are all fixed to the shell.

[0012] According to the filter component of the utility model, it includes: the busbar component and the first magnetic ring mentioned above, the first magnetic ring has an installation space formed therein, the N-line conductive sheet, the DC busbar positive conductive sheet and the DC busbar negative conductive sheet are passed through the first magnetic ring and are stacked in the installation space.

[0013] In some examples of the present invention, the filter component also includes: a fuse component, which is arranged on one side of the first magnetic ring, the DC bus positive conductive sheet and the DC bus negative conductive sheet are electrically connected to the fuse component respectively, and the N line conductive sheet is partially bent to form an avoidance portion to avoid the fuse component.

[0014] In some examples of the present invention, at least one of the DC bus negative conductive sheet and the DC bus positive conductive sheet is bent toward one side in the width direction of the N line conductive sheet to form a bent portion after passing through the first magnetic ring, and the bent portion is connected to a fuse in the fuse assembly.

[0015] In some examples of the present invention, the bending portion includes a first section and a second section connected in sequence, the first section and the second section are basically vertically arranged, the second section is parallel to the N-line conductive sheet and connected to the fuse.

[0016] In some examples of the present invention, the filter component also includes: a capacitor filter component, the capacitor filter component includes: a primary capacitor filter structure and a secondary capacitor filter structure, the N-line conductive sheet, the DC bus positive conductive sheet and the DC bus negative conductive sheet connect the primary capacitor filter structure and the secondary capacitor filter structure.

[0017] According to the motor controller of the utility model, it comprises: a busbar connector, a power distribution connector and the above-mentioned filter assembly, wherein the busbar connector, the power distribution connector and the filter assembly are connected in sequence.

[0018] In some examples of the present invention, the motor controller further includes: an IGBT module, and the DC bus positive conductive sheet and the DC bus negative conductive sheet are electrically connected to the IGBT module respectively.

[0019] In some examples of the present invention, the motor controller further includes: an output magnetic ring connected to an end of the filter assembly away from the busbar connector.

[0020] The vehicle according to the utility model comprises: the motor controller mentioned above.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of the structure of the filter assembly according to a first angle of the embodiment of the utility model;

[0024] Figure 2 is a schematic diagram of the structure of the filter assembly according to a second angle of the embodiment of the utility model;

[0025] Figure 3 is an exploded view of a filter assembly according to an embodiment of the utility model;

[0026] Figure 4 is a cross-sectional view of a filter assembly according to an embodiment of the utility model;

[0027] Figure 5 is a partial structural schematic diagram of a filter assembly according to an embodiment of the utility model;

[0028] Figure 6 is a partial exploded view of a filter assembly according to an embodiment of the utility model from a first angle;

[0029] Figure 7 is a partial exploded view of a filter assembly according to an embodiment of the utility model from a second angle;

[0030] Figure 8 is a partial structural schematic diagram of a filter assembly according to an embodiment of the utility model;

[0031] Fig. 9 is a partial exploded view from a third angle of the filter assembly according to an embodiment of the utility model;

[0032] Fig.10 It is a high voltage topology diagram;

[0033] Fig.11 It is a structural schematic diagram of a motor controller according to an embodiment of the utility model.

[0034] Reference numerals:

[0035] 1000. Motor controller;

[0036] 100, filter assembly; 110, DC bus positive electrode conductive sheet; 120, DC bus negative electrode conductive sheet; 130, N line conductive sheet; 131, avoidance portion; 140, first magnetic ring; 141, secondary upper magnetic ring; 142, secondary lower magnetic ring; 150, insurance assembly; 151, first insurance; 152, second insurance; 160, primary capacitor filter structure; 170, secondary capacitor filter structure; 171, first housing; 172, first circuit board; 173, first filter capacitor; 174, first sealant layer; 180, Distribution insurance filter structure; 181, distribution insurance; 182, distribution positive conductive sheet; 183, distribution negative conductive sheet; 184, distribution copper column; 185, distribution nut; 186, distribution negative mounting point; 187, distribution electromagnetic ring; 188, distribution filter structure; 190, three-stage capacitor filter structure; 191, second shell; 192, second circuit board; 193, second filter capacitor; 194, second sealing glue layer; 200, second magnetic ring; 201, magnetic ring part; 202, third sealing glue layer; 210, busbar capacitor;

[0037] 300. Busbar connector; 400. Power distribution connector; 500. IGBT module; 600. Output magnetic ring. DETAILED DESCRIPTION

[0038] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0039] Reference below Figure 1-Figure 11 The busbar assembly according to an embodiment of the present invention is described, and the busbar assembly is applied in a vehicle, for example, a motor controller 1000 .

[0040] like Figure 3-Figure 6As shown, the busbar assembly according to the present invention includes: a DC bus positive conductive sheet 110, a DC bus negative conductive sheet 120 and an N-line conductive sheet 130, wherein the DC bus positive conductive sheet 110 is suitable for connecting to the positive electrode of the battery pack, the DC bus negative conductive sheet 120 is arranged on one side of the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 is suitable for connecting to the negative electrode of the battery pack, and the N-line conductive sheet 130 is suitable for connecting to the equipotential point of the battery pack and the junction point of the three-phase winding of the motor; wherein the cross-sectional area of ​​the N-line conductive sheet 130 is S1, the cross-sectional area of ​​the DC bus positive conductive sheet 110 is S2, the cross-sectional area of ​​the DC bus negative conductive sheet 120 is S3, and S1, S2 and S3 satisfy the relationship: S1>S2, and S1>S3.

[0041] It can be understood that the DC bus positive electrode conductive sheet 110 is connected to the positive electrode of the battery pack, and the DC bus negative electrode conductive sheet 120 is connected to the negative electrode of the battery pack. This arrangement can connect the filter component 100 to the battery pack, so that the filter component 100 can reduce the electromagnetic interference of the battery pack, thereby improving the working efficiency and stability of the battery pack, and the N-line conductive sheet 130 is connected to the equipotential point of the battery pack and the junction point of the three-phase winding of the motor, so as to improve the electromagnetic compatibility of the filter component 100. The cross-sectional area of ​​the N-line conductive sheet 130 and the cross-sectional area of ​​the DC bus positive electrode conductive sheet 110 and the cross-sectional area of ​​the DC bus negative electrode conductive sheet 120 should be within a reasonable range. Within the range, if the cross-sectional area of ​​the N-line conductive sheet 130 is less than or equal to the cross-sectional area of ​​the DC bus positive conductive sheet 110 and less than or equal to the cross-sectional area of ​​the DC bus negative conductive sheet 120, this will result in a waste of space occupied by the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N-line conductive sheet 130, and will also affect the reliability of the filter component 100. If the cross-sectional area of ​​the N-line conductive sheet 130 is respectively larger than the cross-sectional area of ​​the DC bus positive conductive sheet 110 and the cross-sectional area of ​​the DC bus negative conductive sheet 120, such a setting can optimize the spatial arrangement of the filter component 100, thereby facilitating the disassembly and installation of the filter component 100 and saving costs.

[0042] Therefore, by connecting the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 to the positive electrode and the negative electrode of the battery pack respectively, the filter component 100 can be connected to the battery pack, and the N-line conductive sheet 130 is connected to the equipotential point of the battery pack and the junction point of the three-phase winding of the motor, so that the self-heating function of the battery pack can be realized. The cross-sectional area of ​​the N-line conductive sheet 130 is larger than the cross-sectional area of ​​the DC bus positive conductive sheet 110 and the cross-sectional area of ​​the DC bus negative conductive sheet 120, respectively, so as to optimize the spatial layout and improve the reliability of the filter component 100.

[0043] Among them, Figure 3-Figure 6As shown, the width of the N-line conductive sheet 130 is a, the width of the DC bus positive conductive sheet 110 is b, and the width of the DC bus negative conductive sheet 120 is c. a, b and c satisfy the relationship: a>b, and a>c. That is to say, the relationship between the width of the N-line conductive sheet 130 and the width of the DC bus positive conductive sheet 110 and the width of the DC bus negative conductive sheet 120 should be within a reasonable range. If the width of the N-line conductive sheet 130 is less than or equal to the width of the DC bus positive conductive sheet 110 and less than or equal to the width of the DC bus negative conductive sheet 120, this will result in a waste of space occupied by the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N-line conductive sheet 130, and will also affect the reliability of the filter component 100. If the width of the N-line conductive sheet 130 is respectively greater than the width of the DC bus positive conductive sheet 110 and the width of the DC bus negative conductive sheet 120, such a setting can optimize the spatial arrangement of the filter component 100, thereby facilitating the disassembly and installation of the filter component 100.

[0044] In particular, if Figure 3-Figure 6 As shown, the N-line conductive sheet 130 is disposed between the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, and the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are stacked. It can be understood that the N-line conductive sheet 130 is located between the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, so that the area of ​​the current loop during the self-heating process can be reduced, and the scope of influence of the electromagnetic field on the external environment can be reduced, thereby improving the electromagnetic compatibility of the motor controller 1000, and the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are stacked, so that the volume of the filter component 100 can be reduced, thereby improving the space utilization of the motor controller 1000, and the power and density of the motor controller 1000 can also be improved.

[0045] In addition, the busbar assembly also includes: a shell, and the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N line conductive sheet 130 are all fixed to the shell, so that the shell can provide an installation position for the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N line conductive sheet 130, and protect the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N line conductive sheet 130, thereby extending the service life of the DC bus positive conductive sheet 110, the DC bus negative conductive sheet 120 and the N line conductive sheet 130.

[0046] like Figure 2-Figure 6As shown, the filter assembly 100 according to the utility model includes: the busbar assembly of the above embodiment and the first magnetic ring 140, the first magnetic ring 140 is formed with an installation space, the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are inserted through the first magnetic ring 140 and stacked in the installation space. That is to say, the first magnetic ring 140 is a ring-mounted structure, so that a through hole can be formed in the middle of the first magnetic ring 140, and the through hole can form an installation space, the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 can be inserted through the installation space, and the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are stacked, so as to reduce the volume of the first magnetic ring 140, and further reduce the occupied space of the filter assembly 100. For example, the first magnetic ring 140 is a secondary magnetic ring.

[0047] Among them, Figure 3 and Figure 6 As shown, the first magnetic ring 140 includes: a secondary upper magnetic ring 141 and a secondary lower magnetic ring 142, and an installation space is defined between the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142. It can be understood that the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142 constitute the main structure of the first magnetic ring 140, and the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142 are arranged relative to each other up and down, so that an installation space can be formed between the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142, thereby facilitating the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 to penetrate the installation space and stack the arrangement. For example, the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142 are fixed by glue filling, so as to facilitate the installation between the secondary upper magnetic ring 141 and the secondary lower magnetic ring 142, and improve the stability of the first magnetic ring 140.

[0048] In addition, if Figure 1-Figure 6As shown, the filter component 100 also includes: a fuse component 150, which is arranged on one side of the first magnetic ring 140, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are electrically connected to the fuse component 150 respectively, and the N line conductive sheet 130 is partially bent to form an avoidance portion 131 to avoid the fuse component 150. That is to say, the insurance component 150 is located on one side of the first magnetic ring 140, and the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are connected to the insurance component 150 after passing through the first magnetic ring 140, so that the insurance component 150 can control the range of positive and negative currents in the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, thereby improving the safety performance and stability of the filter component 100, and the N line extends downward after passing through the first magnetic ring 140 to form an avoidance portion 131, and the avoidance portion 131 can limit the insurance component 150, thereby facilitating the installation of the insurance component 150, and the insurance component 150 is arranged above the avoidance portion 131, so that the space in the upper and lower directions of the filter component 100 can be utilized, thereby reducing the occupied space of the filter component 100.

[0049] Among them, Figure 1 , Figure 3 and Figure 6 As shown, the insurance component 150 includes: a first insurance 151 and a second insurance 152, the first insurance 151 is connected to the DC bus positive electrode conductive sheet 110, and the second insurance 152 is connected to the DC bus negative electrode conductive sheet 120. It can be understood that the first insurance 151 and the second insurance 152 constitute the main structure of the insurance component 150, and the first insurance 151 and the second insurance 152 are located above the avoidance portion 131, so that the first insurance 151 and the second insurance 152 are conveniently installed in the filter component 100, and the first insurance 151 and the second insurance 152 are respectively connected to the DC bus positive electrode conductive sheet 110 and the DC bus negative electrode conductive sheet 120, so that the first insurance 151 can control the current range of the DC bus positive electrode conductive sheet 110, and the second insurance 152 can control the current range of the DC bus negative electrode conductive sheet 120, thereby improving the safety performance and stability of the filter component 100. For example, the first insurance 151 is the insurance positive electrode, and the second insurance 152 is the insurance negative electrode.

[0050] In addition, at least one of the DC bus negative conductive sheet 120 and the DC bus positive conductive sheet 110 is bent toward one side in the width direction of the N line conductive sheet 130 after passing through the first magnetic ring 140 to form a bent portion, and the bent portion is connected to a fuse in the fuse component 150. Such a configuration can make full use of the longitudinal space of the bent portion, thereby saving the space occupied by the filter component 100 and further saving costs.

[0051] The bending portion includes a first section and a second section connected in sequence, the first section and the second section are arranged substantially vertically, the second section is arranged parallel to the N-line conductive sheet 130, and is connected to the insurance component 150. Such an arrangement can form an escape space between the first section and the second section, so that the insurance component 150 can be arranged in the escape space, thereby saving the occupied space of the filter component 100. For example, the angle difference between the first section and the second section is α, and α satisfies the relationship: 80°≤α≤110°. Such an arrangement can adjust the longitudinal space of the bending portion according to actual conditions, thereby optimizing the arrangement of the filter component 100.

[0052] In addition, if Figure 2 and Figure 6 As shown, the filter component 100 also includes: a capacitor filter component, the capacitor filter component includes: a first-level capacitor filter structure 160 and a second-level capacitor filter structure 170, the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 connect the first-level capacitor filter structure 160 and the second-level capacitor filter structure 170. That is to say, the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are connected to the first-level capacitor filter structure 160 and the second-level capacitor filter structure 170, so that the first-level capacitor filter structure 160 and the second-level capacitor filter structure 170 can remove the noise of the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, and can also select signals within a specific frequency range of the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, so that the first-level capacitor filter structure 160 and the second-level capacitor filter structure 170 can cope with different calculation complexities of the filter component 100, thereby improving the balance and stability of the filter component 100.

[0053] Among them, Figure 6As shown, the capacitor filter assembly includes: a first housing 171 and a first circuit board 172, a first connection terminal is arranged in the first housing 171, the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are respectively electrically connected to the first connection terminal, the first circuit board 172 is arranged in the first housing 171, and the first circuit board 172 is electrically connected to the first connection terminal. It can be understood that the first connection terminal is arranged in the first housing 171, so that the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are respectively electrically connected to the first connection terminal, and the first circuit board 172 is arranged in the first housing 171, so that the first housing 171 can protect the first circuit board 172, and the first circuit board 172 is electrically connected to the first connection terminal, so that the first-level capacitor filter structure 160 and the second-level capacitor filter structure 170 can cope with different calculation complexities of the filter assembly 100, thereby improving the balance and stability of the filter assembly 100. For example, the primary capacitor filter structure 160 and the secondary capacitor filter structure 170 share the first circuit board 172 , thereby improving the processing and assembly efficiency of the primary capacitor filter structure 160 and the secondary capacitor filter structure 170 .

[0054] In addition, if Figure 6 As shown, the capacitor filter assembly also includes: a first filter capacitor 173 and a first sealant layer 174, the first filter capacitor 173 is electrically connected to the first circuit board 172, and the first sealant layer 174 is sealed on the first shell 171. In other words, the first filter capacitor 173 is electrically connected to the first circuit board 172, so that the first filter capacitor 173 can filter the N-line conductive sheet 130, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, thereby improving the stability of the motor controller 1000, and the first sealant layer 174 is arranged above the first shell 171, so that a closed space can be formed in the first shell 171, thereby ensuring the working environment stability of the primary capacitor filter structure 160 and the secondary capacitor filter structure 170. For example, the primary capacitor filter structure 160 and the secondary capacitor filter structure 170 share the first sealant layer 174, so that the processing and assembly efficiency of the primary capacitor filter structure 160 and the secondary capacitor filter structure 170 can be improved.

[0055] In addition, if Figure 1 and Figure 8As shown, the filter assembly 100 further includes: a power distribution insurance filter structure 180, and the ends of the N-line conductive sheet 130, the DC bus positive electrode conductive sheet 110, and the DC bus negative electrode conductive sheet 120 are respectively electrically connected to the power distribution insurance filter structure 180. It can be understood that the power distribution insurance filter structure 180 is arranged above the filter assembly 100, and the ends of the N-line conductive sheet 130, the DC bus positive electrode conductive sheet 110, and the DC bus negative electrode conductive sheet 120 are respectively electrically connected to the power distribution insurance filter structure 180, thereby improving the space utilization rate of the filter assembly 100, and also improving the power quality of the motor controller 1000, thereby ensuring the stable operation of the motor controller 1000.

[0056] Among them, Figure 1 and Figure 8 As shown, the distribution fuse filter structure 180 includes: a distribution fuse 181, a distribution positive conductive sheet 182 and a distribution negative conductive sheet 183. The distribution fuse 181 is arranged above the DC bus positive conductive sheet 110, the distribution positive conductive sheet 182 is connected to the DC bus positive conductive sheet 110, and the distribution negative conductive sheet 183 is connected to the DC bus negative conductive sheet 120. That is to say, the distribution fuse 181 is located above the DC bus positive conductive sheet 110, so as to ensure the safety of the positive current and improve the space utilization of the filter component 100. The distribution positive conductive sheet 182 and the distribution negative conductive sheet 183 are respectively connected to the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120, so that the distribution positive conductive sheet 182 can improve the power quality of the DC bus positive conductive sheet 110, and the distribution negative conductive sheet 183 can improve the power quality of the DC bus negative conductive sheet 120, thereby ensuring the stable operation of the motor controller 1000.

[0057] In addition, if Figure 8 As shown, the power distribution insurance filter structure 180 also includes: a power distribution copper column 184 and a power distribution nut 185. The power distribution copper column 184 is arranged above the DC bus positive electrode conductive sheet 110. One end of the power distribution insurance 181 is connected to the power distribution copper column 184, and the other end is connected to the power distribution nut 185. The power distribution nut 185 is connected to the power distribution positive electrode conductive sheet 182. It can be understood that the power distribution copper column 184 is located above the DC bus positive electrode conductive sheet 110, and the power distribution copper column 184 is riveted to the DC bus positive electrode conductive sheet 110, so that the space utilization rate of the filter assembly 100 can be improved. The power distribution insurance 181 is connected between the power distribution copper column 184 and the power distribution nut 185, and the power distribution nut 185 is connected to the power distribution positive electrode conductive sheet 182, so that the space utilization rate of the filter assembly 100 can be further improved.

[0058] In addition, if Figure 1 and Figure 8As shown, the power distribution insurance filter structure 180 also includes: a power distribution negative pole mounting point 186, a power distribution electromagnetic ring 187 and a power distribution filter structure 188. The power distribution negative pole mounting point 186 is electrically connected to the power distribution negative pole conductive sheet 183, and the power distribution negative pole mounting point 186 is arranged between the power distribution electromagnetic ring 187 and the power distribution filter structure 188. In other words, the power distribution negative pole mounting point 186 is electrically connected to the power distribution negative pole conductive sheet 183, and the power distribution electromagnetic ring 187 and the power distribution filter structure 188 are respectively located on both sides of the power distribution negative pole mounting point 186, thereby improving the space utilization rate of the filter assembly 100.

[0059] In addition, if Figure 2 and Fig. 9 As shown, the filter component 100 also includes: a three-stage capacitor filter structure 190, and the three-stage capacitor filter structure 190 includes: a second shell 191 and a second connection terminal, the second connection terminal is arranged in the shell, and the DC bus positive electrode conductive sheet 110, the DC bus negative electrode conductive sheet 120 and the N line conductive sheet 130 are respectively electrically connected to the second connection terminal. It can be understood that the second connection terminal is arranged in the second shell 191, and such an arrangement facilitates the N line conductive sheet 130, the DC bus positive electrode conductive sheet 110 and the DC bus negative electrode conductive sheet 120 to be respectively electrically connected to the second connection terminal, so as to facilitate the three-stage capacitor filter structure 190 to cope with different calculation complexities of the filter component 100, thereby improving the balance and stability of the filter component 100.

[0060] In addition, if Fig. 9 As shown, the three-stage capacitor filter structure 190 also includes: a second circuit board 192 and a second filter capacitor 193. The second circuit board 192 is arranged in the second shell 191, and the second circuit board 192 is electrically connected to the second connection terminal, and the second filter capacitor 193 is electrically connected to the second circuit board 192. In other words, the second circuit board 192 is arranged in the second shell 191, so that the second shell 191 can protect the second circuit board 192, the second circuit board 192 is electrically connected to the second connection terminal, and the second filter capacitor 193 is electrically connected to the second circuit board 192, so that the three-stage capacitor filter structure 190 can cope with different calculation complexities of the filter component 100 and realize filtering, thereby improving the balance and stability of the filter component 100.

[0061] In addition, if Fig. 9 As shown, the three-stage capacitor filtering structure 190 also includes: a second sealant layer 194, which is arranged between the first shell 171 and the second shell 191 for sealing, so that the second shell 191 can form an enclosed space, meet safety regulations and conduct heat to the outside, thereby improving the performance of the motor controller 1000.

[0062] In addition, Figure 1 and Fig. 9 As shown, the filter assembly 100 also includes: a second magnetic ring 200, the second magnetic ring 200 is arranged on one side of the three-stage capacitor filter structure 190, and the second magnetic ring 200 includes: a magnetic ring part 201 and a third sealing glue layer 202, and the third sealing glue layer 202 is suitable for fixing the magnetic ring part 201. It can be understood that the second magnetic ring 200 is located on one side of the three-stage capacitor filter structure 190, and the magnetic ring part 201 and the third sealing glue layer 202 constitute the second magnetic ring 200, so that the magnetic ring part 201 can suppress the high-frequency noise of the filter assembly 100, and the third sealing glue layer 202 can fix the magnetic ring part 201 on the filter assembly 100, so as to improve the stability of the filter assembly 100. For example, the second magnetic ring 200 is a primary magnetic ring, and the magnetic ring part 201 is a nanocrystalline magnetic ring.

[0063] like Fig.11 As shown, the motor controller 1000 according to the utility model includes: a busbar connector 300, a power distribution connector 400 and a filter assembly 100 of the above embodiment, and the busbar connector 300, the power distribution connector 400 and the filter assembly 100 are connected in sequence. Such a setting can realize the self-heating function of the battery pack, optimize the spatial layout and improve the reliability of the filter assembly 100, thereby optimizing electromagnetic compatibility and improving versatility. For example, the busbar connector 300 is a three-core busbar connector.

[0064] For example, Fig.10 As shown, the filter assembly includes a plurality of capacitors, and the primary capacitor filter structure 160 includes a primary Y capacitor Cy3 and a primary Y capacitor Cy4, one end of the primary Y capacitor Cy3 is electrically connected to the positive input circuit, and the other end is grounded to suppress common mode interference, one end of the primary Y capacitor Cy4 is electrically connected to the negative input circuit, and the other end is grounded to suppress common mode interference, and the primary capacitor filter structure 160 also includes a primary X capacitor Cx1, and both ends of the primary X capacitor Cx1 are electrically connected to the positive input circuit and the negative input circuit, respectively, so that the primary X capacitor Cx1 can suppress differential mode interference and resistive-capacitive voltage reduction.

[0065] The secondary capacitor filtering structure 170 includes a secondary Y capacitor Cy1 and a secondary Y capacitor Cy2. One end of the secondary Y capacitor Cy1 is electrically connected to the positive input circuit, and the other end is grounded to suppress common mode interference. One end of the secondary Y capacitor Cy2 is electrically connected to the negative input circuit, and the other end is grounded to suppress common mode interference. The secondary capacitor filtering structure 170 also includes a secondary X capacitor Cx2. Both ends of the secondary X capacitor Cx2 are electrically connected to the positive input circuit and the negative input circuit, respectively, so that the secondary X capacitor Cx2 can suppress differential mode interference and resistive-capacitive voltage reduction.

[0066] The three-stage capacitor filtering structure 190 includes a three-stage Y capacitor Cy5 and a two-stage Y capacitor Cy6. One end of the three-stage Y capacitor Cy5 is electrically connected to the positive input circuit, and the other end is grounded to suppress common-mode interference. One end of the three-stage Y capacitor Cy6 is electrically connected to the negative input circuit, and the other end is grounded to suppress common-mode interference. The three-stage capacitor filtering structure 190 also includes a three-stage X capacitor Cx3. Both ends of the three-stage X capacitor Cx3 are electrically connected to the positive input circuit and the negative input circuit, respectively, so that the three-stage X capacitor Cx3 can suppress differential-mode interference and reduce the resistance and capacitance voltage.

[0067] The bus capacitor 210 is Cx0, so that Cx0 can play the role of suppressing differential mode interference and reducing resistance and capacitance voltage.

[0068] A first magnetic ring 140 is provided between the first-stage capacitor filter structure 160 and the second-stage capacitor filter structure 170, so that the first magnetic ring 140 can play a role in suppressing high-frequency noise and electromagnetic induction conversion; a second magnetic ring 200 is provided between the second-stage capacitor filter structure 170 and the third-stage capacitor filter structure 190, so that the second magnetic ring 200 can play a role in suppressing high-frequency noise and electromagnetic induction conversion.

[0069] The distribution insurance filter structure 180 includes distribution Y capacitor Cy7 and distribution Y capacitor Cy8. One end of the distribution Y capacitor Cy7 is electrically connected to the negative distribution circuit, and the other end is grounded to suppress common mode interference. One end of the distribution Y capacitor Cy8 is electrically connected to the positive distribution circuit, and the other end is grounded to suppress common mode interference.

[0070] In addition, if Fig.10 and Fig.11 As shown, the motor controller 1000 further includes: an IGBT module 500 and an output magnetic ring 600, the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are electrically connected to the IGBT module 500 respectively, and the output magnetic ring 600 is connected to one end of the filter component 100 away from the bus connector 300. It can be understood that the DC bus positive conductive sheet 110 and the DC bus negative conductive sheet 120 are electrically connected to the IGBT module 500 respectively, the bus capacitor 210 is connected in parallel to the DC side of the IGBT module 500, the DC power is converted into three-phase AC power (U\V\W) after being inverted by the IGBT module 500, and finally the three-phase AC power is connected to the three-phase line of the motor, and the output magnetic ring 600 can suppress the high-frequency noise at the output end of the filter component 100. For example, when the motor controller 1000 performs battery self-heating, the IGBT module 500 is controlled to achieve alternating conduction of the positive electrode, negative electrode and N line, thereby realizing alternating charging and discharging of the two battery packs. The internal resistance of the battery pack generates heat under the action of the charging and discharging current of the battery pack, thereby increasing the temperature of the battery pack.

[0071] The vehicle according to the present invention comprises: the motor controller 1000 of the above embodiment. Such a configuration can realize the self-heating function of the battery pack, optimize the spatial layout and improve the reliability of the filter component 100.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown 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 should not be understood as a limitation on the present invention.

[0073] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A busbar assembly, characterized in that: include: A DC bus positive electrode conductive sheet (110), wherein the DC bus positive electrode conductive sheet (110) is suitable for being connected to a positive electrode of a battery pack; a DC bus negative electrode conductive sheet (120), the DC bus negative electrode conductive sheet (120) being arranged on one side of the DC bus positive electrode conductive sheet (110), the DC bus negative electrode conductive sheet (120) being suitable for being connected to the negative electrode of a battery pack; An N-line conductive sheet (130), the N-line conductive sheet (130) being suitable for being connected to an equipotential point of a battery pack and a junction point of a three-phase winding of a motor; The cross-sectional area of ​​the N-line conductive sheet (130) is S1, the cross-sectional area of ​​the DC bus positive conductive sheet (110) is S2, and the cross-sectional area of ​​the DC bus negative conductive sheet (120) is S3. S1, S2 and S3 satisfy the relationship: S1>S2, and S1>S3.

2. The busbar assembly according to claim 1, characterized in that: The width of the N-line conductive sheet (130) is a, the width of the DC bus positive electrode conductive sheet (110) is b, the width of the DC bus negative electrode conductive sheet (120) is c, and a, b and c satisfy the relationship: a>b, and a>c.

3. The busbar assembly according to claim 1, characterized in that: The N-line conductive sheet (130) is arranged between the DC bus positive electrode conductive sheet (110) and the DC bus negative electrode conductive sheet (120), and the N-line conductive sheet (130), the DC bus positive electrode conductive sheet (110) and the DC bus negative electrode conductive sheet (120) are stacked.

4. The busbar assembly according to claim 1, characterized in that: Also includes: A housing, wherein the DC bus positive electrode conductive sheet (110), the DC bus negative electrode conductive sheet (120) and the N line conductive sheet (130) are all fixed to the housing.

5. A filter component, characterized in that: include: The busbar assembly according to any one of claims 1 to 4; A first magnetic ring (140), wherein an installation space is formed in the first magnetic ring (140), and the N-line conductive sheet (130), the DC bus positive pole conductive sheet (110) and the DC bus negative pole conductive sheet (120) are inserted through the first magnetic ring (140) and are stacked in the installation space.

6. The filter assembly according to claim 5, characterized in that: Also includes: A fuse component (150), the fuse component (150) being arranged on one side of the first magnetic ring (140), the DC bus positive pole conductive sheet (110) and the DC bus negative pole conductive sheet (120) being electrically connected to the fuse component (150) respectively, and the N line conductive sheet (130) being partially bent to form an avoidance portion (131) to avoid the fuse component (150).

7. The filter assembly according to claim 6, characterized in that: After passing through the first magnetic ring (140), at least one of the DC bus negative pole conductive sheet (120) and the DC bus positive pole conductive sheet (110) is bent toward one side in the width direction of the N line conductive sheet (130) to form a bent portion, and the bent portion is connected to a fuse in the fuse assembly (150).

8. The filter assembly according to claim 7, characterized in that: The bent portion comprises a first section and a second section connected in sequence, the first section and the second section are arranged substantially vertically, and the second section is arranged parallel to the N-line conductive sheet (130) and connected to the fuse assembly (150).

9. The filter assembly according to claim 5, characterized in that: Also includes: A capacitor filter component (100), the capacitor filter component (100) comprising: a primary capacitor filter structure (160) and a secondary capacitor filter structure (170), the N-line conductive sheet (130), the DC bus positive electrode conductive sheet (110) and the DC bus negative electrode conductive sheet (120) connecting the primary capacitor filter structure (160) and the secondary capacitor filter structure (170).

10. A motor controller, characterized in that: include: Busbar connector (300); Power distribution connector (400); In the filter assembly (100) according to any one of claims 5 to 9, the busbar connector (300), the power distribution connector (400) and the filter assembly (100) are connected in sequence.

11. The motor controller according to claim 10, characterized in that: Also includes: An IGBT module (500), wherein the DC bus positive electrode conductive sheet (110) and the DC bus negative electrode conductive sheet (120) are respectively electrically connected to the IGBT module (500).

12. The motor controller according to claim 10, characterized in that: Also includes: An output magnetic ring (600) connected to an end of the filter assembly (100) away from the busbar connector (300).

13. A vehicle, characterized in that: include: The motor controller (1000) according to any one of claims 10 to 12.

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