Magnetic ring, connecting assembly and inverter

Abstract

The utility model provides a magnetic ring, a connecting assembly and an inverter, relates to the technical field of inverters, and aims to solve the problems that the internal structure of a conventional inverter is complicated, and the filtering effect of a magnetic ring structure is poor. The magnetic ring is applied to the inverter and comprises a body; the first copper bar via hole penetrates through the body; the first accommodating bin is arranged on the body and surrounds the first copper bar via hole; the first battery cell is arranged in the first accommodating bin; the second accommodating bin is arranged on the body and surrounds the first copper bar via hole, and the first accommodating bin and the second accommodating bin are arranged side by side in the axial direction of the first copper bar via hole; and the second battery cell is arranged in the second accommodating bin. According to the utility model, the magnetic ring, the first accommodating bin and the second accommodating bin are arranged around the first copper bar via hole, so that when the copper bar passes through the first copper bar via hole, the first battery cell in the first accommodating bin and the second battery cell in the second accommodating bin can generate mutual inductance with the copper bar, thereby forming a double-inductance effect; therefore, bipolar filtering can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and in particular to a magnetic ring, a connection component and an inverter. Background Art

[0002] The internal layout of existing energy storage hybrid inverter housings typically places external connection terminals on the bottom or left and right sides of the housing, including high-voltage terminals for current transmission and low-voltage terminals for control and communication. Based on the principles of energy storage hybrid inverters, EMC (Electromagnetic Compatibility) protection design is required. The core is filtering the conducted and radiated high-frequency harmonics. The general filtering solution is LC filtering (where L stands for inductor and C stands for capacitor), which is the coordinated filtering of inductors and capacitors. The common solutions are: 1. Design a filtering protection circuit board; 2. Install a filtering magnetic ring at a position where the wires are close to the terminals.

[0003] The basic principle of an LC filter is to filter out higher-frequency signals in a circuit while allowing lower-frequency signals to pass through, using a combination of inductors and capacitors. Inductors pass low frequencies and block high frequencies, while capacitors pass high frequencies and block low frequencies. When an input signal passes through an LC filter, the interaction between the inductor and capacitor causes specific frequency components of the signal to be filtered out, while other frequency components are passed through.

[0004] To achieve a good shielding effect, a solution of adding a filtering magnetic ring is usually used. However, installing the magnetic ring inside the product usually affects the product wiring layout. Almost all wires connected to the terminals need protection, so the magnetic ring is installed in different positions of the product. The magnetic ring has a certain weight. To prevent collision with the PCBA (Printed Circuit Board Assembly), a specially designed fixed position and fixing method need to be designed. This makes the internal layout of the product more chaotic and requires a large space, which is not conducive to the overall wiring and layout of the product.

[0005] In addition, inverters are usually equipped with single-stage filtering connectors, which have poor single-stage filtering effects. Utility Model Content

[0006] The utility model aims to at least solve the problem that the current inverter has a complex internal structure and a poor filtering effect of the magnetic ring structure.

[0007] To this end, a first aspect of the present invention provides a magnetic ring.

[0008] A second aspect of the present invention provides a connection assembly.

[0009] A third aspect of the present invention provides an inverter.

[0010] The magnetic ring provided in the first aspect of the present invention is applied to an inverter and includes: a main body; a first copper busbar through-hole passing through the main body; a first accommodating compartment provided in the main body and arranged around the first copper busbar through-hole; a first battery cell provided in the first accommodating compartment; a second accommodating compartment provided in the main body and arranged around the first copper busbar through-hole, and the first accommodating compartment and the second accommodating compartment are arranged side by side in the axial direction of the first copper busbar through-hole; and a second battery cell provided in the second accommodating compartment.

[0011] The magnetic ring provided by the present invention has a first accommodating compartment and a second accommodating compartment both arranged around the first copper busbar through-hole. In this way, when the first copper busbar through-hole passes through the copper busbar, the first battery cell in the first accommodating compartment and the second battery cell in the second accommodating compartment can both generate mutual inductance with the copper busbar, thereby forming a dual inductance effect, thereby realizing bipolar filtering, and the filtering effect is better than that of single inductance filtering.

[0012] In some technical solutions, optionally, the main body includes a first body and a second body, the first accommodating chamber is provided in the first body, the second accommodating chamber is provided in the second body, and the magnetic ring further includes a connecting plate connected between the first body and the second body.

[0013] In this technical solution, two main bodies are provided to house the first and second cells, respectively. This reduces the size of each body and facilitates the development of smaller and lighter batteries, compared to solutions that house both cells in a single large body. Furthermore, a connecting plate is provided between the first and second bodies to facilitate the subsequent installation of capacitors and other structures between the two cells.

[0014] In some technical solutions, optionally, the first accommodating chamber is formed by the end surface of the first body away from the second body being concave in the direction of the second body; the second accommodating chamber is formed by the end surface of the second body away from the first body being concave in the direction of the first body.

[0015] In this technical solution, the first accommodating compartment is formed by the end surface of the first body away from the second body being concave in the direction of the second body; the second accommodating compartment is formed by the end surface of the second body away from the first body being concave in the direction of the first body. This design method, on the one hand, is conducive to the installation of the first battery cell and the second battery cell, and on the other hand, can make the first battery cell and the second battery cell away from each other, thereby avoiding mutual influence between the first battery cell and the second battery cell.

[0016] In some technical solutions, optionally, the magnetic ring further includes a first connection hole, which is provided on the connection plate and is connected to the first copper bus via hole.

[0017] In this technical solution, the magnetic ring also includes a first connecting hole, which is provided on the connecting plate and is connected to the first copper busbar through-hole. In this way, during the later assembly process, the setting of the first connecting hole can, on the one hand, assemble the magnetic ring with the inverter, and on the other hand, the first capacitor can also pass through the first connecting hole, so that the first inductor and the first capacitor form an LC filter. Compared with the single inductor filter, the LC filter has the dual filtering advantages of concentrated capacitance and inductance, and has a better filtering effect.

[0018] In some technical solutions, optionally, the number of the first copper bus vias is two, and an insulating partition is provided between the two first copper bus vias.

[0019] In this technical solution, an insulating partition is provided between the two first copper busbar vias, so that the two first copper busbar vias form positive and negative poles respectively, thereby avoiding short circuit.

[0020] The second aspect of the present invention provides a connection component, comprising: a magnetic ring as any technical solution of the first aspect of the present invention; a copper busbar, one end of which is connected to the inverter, and the other end passes through the first copper busbar through hole and extends outside the first copper busbar through hole.

[0021] The second aspect of the present invention provides a connection assembly for connecting an inverter and an electrical device. The connection assembly includes a magnetic ring and a copper busbar. One end of the copper busbar is connected to the inverter, and the other end passes through a first copper busbar via, extends outside the first copper busbar via, and connects to the electrical device. Because the connection assembly of the second aspect of the present invention includes the magnetic ring of any of the first aspects of the present invention, it has all the beneficial effects of the magnetic ring of any of the first aspects of the present invention.

[0022] In some technical solutions, optionally, a terminal is provided on the inverter, and a wiring hole and a second connection hole are provided on the terminal. The connection component also includes: a third connection hole, which is provided at one end of the copper busbar close to the inverter, and the end of the copper busbar connected to the inverter extends into the wiring hole; a locking piece, which passes through the second connection hole and the third connection hole to fix the copper busbar on the terminal.

[0023] In this technical solution, the inverter is provided with a terminal, which is provided with a wiring hole and a second connection hole. The connection assembly also includes a third connection hole, which is located at the end of the copper busbar closest to the inverter. When the end of the copper busbar connected to the inverter extends into the wiring hole, a locking member can pass through the second and third connection holes to secure the copper busbar to the terminal. The connection assembly of this utility model, through the second connection hole, third connection hole, and locking member, achieves electrical connection between the copper busbar and the inverter, thereby realizing signal transmission.

[0024] In some technical solutions, optionally, the connection component also includes: an insulating shell, a copper busbar on a side away from the inverter, connected to the insulating shell through the first copper busbar via hole; a cable, one end of the cable is arranged in the insulating shell and connected to the copper busbar.

[0025] In this technical solution, the connection assembly also includes an insulating housing. A copper busbar, located on the side away from the inverter, passes through a first copper busbar via and connects to the insulating housing, facilitating assembly between the copper busbar and the inverter. One end of a cable is located within the insulating housing and connected to one end of the copper busbar within the insulating housing. The other end of the cable is connected to an electrical device.

[0026] In some technical solutions, optionally, the inverter also includes a box body, the box body includes a second copper busbar through-hole, the second copper busbar through-hole is arranged corresponding to the first copper busbar through-hole, and the insulating shell includes: a shell; a cover plate, arranged at one end of the shell, the cover plate is provided with a third copper busbar through-hole, and the cover plate can cover the second copper busbar through-hole; a sealing member, arranged between the cover plate and the box body, for sealing the gap between the cover plate and the box body.

[0027] In this technical solution, the inverter also includes a housing, which includes a second copper busbar through-hole, which is arranged corresponding to the first copper busbar through-hole and is used for the copper busbar to pass through. The insulating shell includes a shell and a cover plate, which is arranged at one end of the shell. The cover plate is provided with a third copper busbar through-hole, and the cover plate can cover the second copper busbar through-hole; the copper busbar passes through the first copper busbar through-hole, the second copper busbar through-hole and the third copper busbar through-hole in sequence, and enters the interior of the insulating shell and is connected to the cable. A sealing member is arranged between the cover plate and the housing to seal the cover plate and the housing. By arranging a sealing member between the cover plate and the housing, the utility model can seal the second copper busbar through-hole, thereby preventing dust and impurities from entering the interior of the inverter through the second copper busbar through-hole, thereby improving the service life of the electronic device.

[0028] A third aspect of the present invention provides an inverter, comprising: a connecting component according to any one of the technical solutions of the second aspect of the present invention.

[0029] Since the inverter of the technical solution of the third aspect of the utility model includes the connection component of any technical solution of the second aspect of the utility model, it has all the beneficial effects of the connection component of any technical solution of the second aspect of the utility model.

[0030] In some technical solutions, optionally, the inverter further includes: a first capacitor electrically connected to the copper busbar between the first battery cell and the second battery cell; and a second capacitor electrically connected to the copper busbar on a side of the second battery cell away from the first battery cell.

[0031] In this technical solution, the inverter also includes a first capacitor and a second capacitor. The first capacitor is electrically connected to the copper busbar between the first and second battery cells; the second capacitor is electrically connected to the copper busbar on the side of the second battery cell away from the first battery cell. The inverter of this utility model is equipped with two battery cells and two capacitors. The mutual inductance of the first battery cell and the copper busbar forms a first inductor, and the mutual inductance of the second battery cell and the copper busbar forms a second inductor. The first inductor and the first capacitor form an LC filter, and the second inductor and the second capacitor form another LC filter, thereby achieving bipolar filtering.

[0032] In some technical solutions, optionally, the inverter further includes a circuit board, and the first capacitor and the second capacitor are arranged on the circuit board.

[0033] In this technical solution, the first capacitor and the second capacitor are integrated on the circuit board, which can improve the integration efficiency of the circuit board. There is no need to set the first capacitor and the second capacitor near the copper bus, which is more conducive to assembling the entire connection component.

[0034] In some technical solutions, optionally, the terminal is provided on a circuit board.

[0035] In some technical solutions, optionally, the first capacitor is connected to the circuit board by welding. The second capacitor is connected to the circuit board by welding.

[0036] In this technical solution, the first capacitor is connected to the circuit board by welding, and the second capacitor is connected to the circuit board by welding, so that the first capacitor and the second capacitor can be firmly fixed on the circuit board and are not easy to fall off.

[0037] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0039] Figure 1 One of the structural diagrams of the connection assembly of an embodiment of the utility model is shown;

[0040] Figure 2 One of the structural schematic diagrams of the magnetic ring body of an embodiment of the utility model is shown;

[0041] Figure 3 The second structural diagram of the connection assembly of the embodiment of the utility model is shown;

[0042] Figure 4 The third structural diagram of the connection assembly of the embodiment of the present utility model is shown;

[0043] Figure 5One of the structural schematic diagrams showing the assembly of the connection assembly and the inverter according to an embodiment of the present utility model is shown;

[0044] Figure 6 A second structural diagram showing the assembly of the connection assembly and the inverter according to an embodiment of the present utility model;

[0045] Figure 7 The third structural diagram shows the assembly of the connection assembly and the inverter according to the embodiment of the present utility model;

[0046] Figure 8 A schematic structural diagram of a terminal block according to an embodiment of the present utility model is shown;

[0047] Figure 9 FIG1 shows one of the schematic diagrams of the connection structure between the inductor and the capacitor according to an embodiment of the present utility model;

[0048] Figure 10 The second structural diagram of the magnetic ring body of the embodiment of the present utility model is shown;

[0049] Figure 11 The third structural diagram of the magnetic ring body of the embodiment of the present utility model is shown;

[0050] Figure 12 The fourth structural diagram of the magnetic ring body of the embodiment of the present utility model is shown;

[0051] Figure 13 Shown Figure 11 Middle AA cross-section;

[0052] Figure 14 The second schematic diagram shows the connection structure between the inductor and the capacitor according to the embodiment of the present utility model.

[0053] in, Figures 1 to 14 The corresponding relationship between the reference numerals and component names is as follows:

[0054] 1 Connecting assembly, 10 Magnetic ring, 11 Body, 112 First copper busbar through hole, 114 First connection hole, 116 Insulating partition, 117 First body, 118 Second body, 119 Connecting plate, 12 Copper busbar, 122 Third connection hole, 131 First battery cell, 132 First inductor, 133 Second battery cell, 134 Second inductor, 136 First capacitor, 138 Second capacitor, 14 Conductive connector, 15 Locking member, 162 First accommodating compartment, 164 Second accommodating compartment, 17 Insulating shell, 172 Third copper busbar through hole, 176 Shell, 178 Cover, 18 Cable, 19 Sealing member, 2 Inverter, 21 Circuit board, 211 Terminal, 2111 Connection hole, 2112 Second connection hole, 22 Box, 222 Second copper busbar through hole. DETAILED DESCRIPTION

[0055] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0056] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0057] like Figure 1 、 Figure 2 、 Figure 7 、 Figure 9 、 Figure 13 and Figure 14 As shown, the magnetic ring 10 provided in the first aspect of the present invention is applied to the inverter 2, including a main body 11; a first copper busbar through-hole 112 passes through the main body 11; a first accommodating chamber 162 is arranged in the main body 11 and is arranged around the first copper busbar through-hole 112; the first battery cell 131 is arranged in the first accommodating chamber 162; the second accommodating chamber 164 is arranged in the main body 11 and is arranged around the first copper busbar through-hole 112, and the first accommodating chamber 162 and the second accommodating chamber 164 are arranged side by side in the axial direction of the first copper busbar through-hole 112; the second battery cell 133 is arranged in the second accommodating chamber 164.

[0058] In the magnetic ring 10 provided by the present invention, the first accommodating compartment 162 and the second accommodating compartment 164 are both arranged around the first copper busbar via 112. In this way, when the first copper busbar via 112 passes through the copper busbar 12, the first battery cell 131 in the first accommodating compartment 162 and the second battery cell 133 in the second accommodating compartment 164 can both generate mutual inductance with the copper busbar 12, thereby forming a dual inductance effect, thereby realizing bipolar filtering, which has a better filtering effect than single inductance filtering.

[0059] In some technical solutions, optionally, the body 11 includes a first body 117 and a second body 118, the first accommodating chamber 162 is provided in the first body 117, the second accommodating chamber 164 is provided in the second body 118, and the magnetic ring 10 also includes a connecting plate 119 connected between the first body 117 and the second body 118.

[0060] In this technical solution, two bodies 11 are provided to house the first battery cell 131 and the second battery cell 133, respectively. This allows each body 11 to be smaller in size. Compared to a solution where a single large body 11 houses both the first and second battery cells 131, 133, this is more conducive to the development of smaller and lighter models. Furthermore, a connecting plate 119 is provided between the first body 117 and the second body 118, facilitating the subsequent installation of capacitors and other structures between the two battery cells.

[0061] In some technical solutions, optionally, the first accommodating chamber 162 is formed by the end surface of the first body 117 away from the second body 118 being concave in the direction of the second body 118; the second accommodating chamber 164 is formed by the end surface of the second body 118 away from the first body 117 being concave in the direction of the first body 117.

[0062] In this technical solution, the first accommodating compartment 162 is formed by the end surface of the first body 117 away from the second body 118 being concave in the direction of the second body 118; the second accommodating compartment 164 is formed by the end surface of the second body 118 away from the first body 117 being concave in the direction of the first body 117. This design method, on the one hand, is conducive to the installation of the first battery cell 131 and the second battery cell 133, and on the other hand, it can make the first battery cell 131 and the second battery cell 133 move away from each other, thereby avoiding mutual influence between the first battery cell 131 and the second battery cell 133.

[0063] In some technical solutions, optionally, as Figure 2 As shown, the magnetic ring 10 further includes a first connection hole 114 , which is provided on the connection plate 119 and communicates with the first copper busbar via 112 .

[0064] In this technical solution, the magnetic ring 10 also includes a first connecting hole 114, which is provided on the connecting plate 119 and is connected to the first copper busbar through-hole 112. In this way, during the later assembly process, the setting of the first connecting hole 114 can, on the one hand, assemble the magnetic ring 10 with the inverter 2, and on the other hand, the first connecting hole 114 can also be passed through by the first capacitor 136, so that the first inductor 132 and the first capacitor 136 form an LC filter. Compared with the single inductor filter, the LC filter has the dual filtering advantages of concentrated capacitance and inductance, and has a better filtering effect.

[0065] In some technical solutions, optionally, as Figure 10 、 Figure 11 and Figure 12 As shown, there are two first copper busbar vias 112 , and an insulating spacer 116 is provided between the two first copper busbar vias 112 .

[0066] In this technical solution, an insulating partition 116 is provided between the two first copper busbar vias 112 , so that the two first copper busbar vias 112 form positive and negative poles respectively, thereby avoiding a short circuit.

[0067] like Figure 3 and Figure 4 As shown, the second aspect of the present invention provides a connection component 1, comprising: a magnetic ring 10 as any technical solution of the first aspect of the present invention; a copper busbar 12, one end of which is connected to the inverter 2, and the other end passes through the first copper busbar via 112 and extends outside the first copper busbar via 112.

[0068] The second aspect of the present invention provides a connection assembly 1 for connecting an inverter 2 and an electrical device. The connection assembly 1 includes a magnetic ring 10 and a copper busbar 12. One end of the copper busbar 12 is connected to the inverter 2, and the other end passes through a first copper busbar via 112, extends outside the first copper busbar via 112, and is connected to the electrical device. Because the connection assembly 1 of the second aspect of the present invention includes the magnetic ring 10 of any of the technical solutions of the first aspect of the present invention, it has all the beneficial effects of the magnetic ring 10 of any of the technical solutions of the first aspect of the present invention.

[0069] like Figure 1 、 Figure 5 and Figure 8 As shown, in some technical solutions, optionally, a terminal 211 is provided on the inverter 2, and a wiring hole 2111 and a second connection hole 2112 are provided on the terminal 211. The connection component 1 also includes: a third connection hole 122, which is provided at one end of the copper busbar 12 close to the inverter 2, and the end of the copper busbar 12 connected to the inverter 2 extends into the wiring hole 2111; a locking member 15, which passes through the second connection hole 2112 and the third connection hole 122 to fix the copper busbar 12 on the terminal 211.

[0070] In this technical solution, the inverter 2 is provided with a terminal 211, which is provided with a wiring hole 2111 and a second connection hole 2112. The connection assembly 1 also includes a third connection hole 122, which is provided at the end of the copper busbar 12 closest to the inverter 2. When the end of the copper busbar 12 connected to the inverter 2 extends into the wiring hole 2111, the locking member 15 can pass through the second connection hole 2112 and the third connection hole 122 to secure the copper busbar 12 to the terminal 211. The connection assembly 1 of the present invention, through the second connection hole 2112, the third connection hole 122, and the locking member 15, achieves electrical connection between the copper busbar 12 and the inverter 2, thereby realizing signal transmission.

[0071] In some technical solutions, optionally, the connection component 1 also includes: an insulating shell 17, the copper busbar 12 is on a side away from the inverter 2, and is connected to the insulating shell 17 through the first copper busbar via 112; a cable 18, one end of the cable 18 is arranged in the insulating shell 17 and is connected to the copper busbar 12.

[0072] In this technical solution, the connection assembly 1 also includes an insulating housing 17. The copper busbar 12, on the side away from the inverter 2, passes through a first copper busbar via 112 and connects to the insulating housing 17, facilitating assembly between the copper busbar 12 and the inverter 2. One end of a cable 18 is disposed within the insulating housing 17 and connected to one end of the copper busbar 12 within the insulating housing 17. The other end of the cable 18 is connected to an electrical device.

[0073] In some technical solutions, optionally, as Figure 5 and Figure 6 As shown, the inverter 2 also includes a box body 22, which includes a second copper busbar through-hole 222, which is arranged corresponding to the first copper busbar through-hole 112. The insulating shell 17 includes: a shell 176; a cover plate 178, which is arranged at one end of the shell body 176, and has a third copper busbar through-hole 172 arranged on the cover plate 178, and the cover plate 178 can cover the second copper busbar through-hole 222; a sealing member 19, which is arranged between the cover plate 178 and the box body 22 and is used to seal the gap between the cover plate 178 and the box body 22.

[0074] In this technical solution, inverter 2 also includes a housing 22, which includes a second copper busbar via 222, corresponding to the first copper busbar via 112, for the passage of copper busbar 12. Insulating housing 17 includes a housing 176 and a cover 178. Cover 178 is disposed at one end of housing 176 and is provided with a third copper busbar via 172, which can cover the second copper busbar via 222. Copper busbar 12 passes through the first copper busbar via 112, the second copper busbar via 222, and the third copper busbar via 172 in sequence, enters the interior of insulating housing 17, and is connected to cable 18. A seal 19 is disposed between cover 178 and housing 22 to seal the cover 178 and housing 22. The present invention provides a seal 19 between the cover 178 and the box body 22 to seal the second copper busbar via hole 222 , thereby preventing dust and impurities from entering the inverter 2 through the second copper busbar via hole 222 , thereby improving the service life of the electronic device.

[0075] A third aspect of the present invention provides an inverter 2 , comprising: a connection assembly 1 according to any one of the technical solutions of the second aspect of the present invention.

[0076] Since the inverter 2 of the technical solution of the third aspect of the utility model includes the connection component 1 of any technical solution of the second aspect of the utility model, it has all the beneficial effects of the connection component 1 of any technical solution of the second aspect of the utility model.

[0077] In some technical solutions, optionally, as Figure 5 、 Figure 9 and Figure 14 As shown, the inverter 2 further includes: a first capacitor 136 electrically connected to the copper busbar 12 between the first battery cell 131 and the second battery cell 133 ; and a second capacitor 138 electrically connected to the copper busbar 12 on a side of the second battery cell 133 away from the first battery cell 131 .

[0078] In this technical solution, the inverter 2 also includes a first capacitor 136 and a second capacitor 138. The first capacitor 136 is electrically connected to the copper busbar 12 between the first battery cell 131 and the second battery cell 133; the second capacitor 138 is electrically connected to the copper busbar 12 on the side of the second battery cell 133 away from the first battery cell 131. The inverter 2 of the present invention is equipped with two battery cells and two capacitors. The mutual inductance of the first battery cell 131 and the copper busbar 12 forms a first inductor 132, and the mutual inductance of the second battery cell 133 and the copper busbar 12 forms a second inductor 134. The first inductor 132 and the first capacitor 136 form an LC filter, and the second inductor 134 and the second capacitor 138 form another LC filter, thereby achieving bipolar filtering.

[0079] Among them, such as Figure 2 and Figure 4 As shown, one end of the first capacitor 136 can be electrically connected to the conductive connector 14, and then the conductive connector 14 passes through the first connection hole 114 and abuts against the copper busbar 12, thereby electrically connecting the first capacitor 136 to the copper busbar 12. The conductive connector 14 can be a conductive bolt.

[0080] In some technical solutions, optionally, as Figure 5 As shown, the inverter 2 further includes a circuit board 21 , and the first capacitor 136 and the second capacitor 138 are disposed on the circuit board 21 .

[0081] In this technical solution, the first capacitor 136 and the second capacitor 138 are integrated on the circuit board 21, which can improve the integration efficiency of the circuit board 21. There is no need to set the first capacitor 136 and the second capacitor 138 near the copper bus 12, which is more conducive to the assembly of the entire connection component 1.

[0082] In some technical solutions, optionally, the terminal 211 is provided on the circuit board 21 .

[0083] In some technical solutions, optionally, the first capacitor 136 is connected to the circuit board 21 by welding. The second capacitor 138 is connected to the circuit board 21 by welding.

[0084] In this technical solution, the first capacitor 136 is welded to the circuit board 21, and the second capacitor 138 is welded to the circuit board 21, so that the first capacitor 136 and the second capacitor 138 can be firmly fixed on the circuit board 21 and are not easy to fall off.

[0085] Another embodiment of the present invention provides a connection assembly 1. It should be understood that the internal layout of the shell of the existing energy storage hybrid inverter is usually to arrange external connection terminals on the lower side or left and right sides of the shell, including high-voltage terminals for current transmission and low-voltage terminals for control and communication. Based on the principle of energy storage hybrid inverter, EMC protection design is required. The core is the filtering of conduction and radiation of high-frequency harmonics. The general filtering solution is LC filtering, that is, the coordinated filtering of inductors and capacitors. The general solution is: 1. Design a filtering protection circuit board; 2. Install a filtering magnetic ring at a position where the wire is close to the terminal.

[0086] The basic principle of an LC filter is to filter out higher-frequency signals in a circuit while allowing lower-frequency signals to pass through, using a combination of inductors and capacitors. Inductors pass low frequencies and block high frequencies, while capacitors pass high frequencies and block low frequencies. When an input signal passes through an LC filter, the interaction between the inductor and capacitor causes specific frequency components of the signal to be filtered out, while other frequency components are passed through.

[0087] To achieve a good shielding effect, a solution of adding a filtering magnetic ring is usually used. However, installing the magnetic ring inside the product usually affects the product wiring layout. Almost all wires connected to the terminals need protection, so the magnetic ring is installed in different positions of the product. The magnetic ring has a certain weight. To prevent collision with the PCBA, a special fixed position and fixing method need to be designed. This makes the internal layout of the product more chaotic and requires a large space, which is not conducive to the overall wiring and layout of the product.

[0088] The utility model aims to solve the problem of chaotic inner cavity layout caused by EMC design of energy storage hybrid inverter, and proposes a layout structure of a magnetic ring with two-stage LC filtering.

[0089] The connection assembly 1 of this embodiment includes a magnetic ring body 11, a connector, connecting screws, and fixing screws.

[0090] The connector mainly includes: an insulating shell 17, screws, a wiring compartment cover, an internal copper busbar 12, and an external cable 18. The insulating shell 17 is provided with a sealing member 19, such as a sealing ring, for sealing, and the internal copper busbar 12 is provided with a through hole and a threaded hole.

[0091] The magnetic ring body 11 primarily comprises a first inductor 132, a second inductor 134, an insulating housing, and potting compound. The first and second inductors 132, 134 are respectively potted within two cavities of the insulating housing. The two cavities are designed based on the dimensions of the two inductors and can have different structures. The insulating housing is provided with a first accommodating compartment 162 and a second accommodating compartment 164, as well as first copper busbar vias 112 for the two internal copper busbars 12 to pass through. An insulating barrier is provided between the two first copper busbar vias 112. The insulating housing also includes a first connection hole 114 for securing the magnetic ring body 11.

[0092] In addition, a circuit board 21 is installed inside the box 22 of the inverter 2. The box 22 has rectangular holes and mounting screw holes for connector installation. The circuit board 21 is provided with terminal posts 211 for connecting to the internal copper busbar 12.

[0093] The specific installation method is: the connector is inserted into the rectangular hole of the box body 22 and the middle hole of the magnetic ring body 11 in turn, so that the copper busbar 12 is overlapped on the terminal 211 of the circuit board 21, and then fastened with the connecting screws, and then the connector screws and the box body 22 are fixed through the mounting screw holes, and finally, the fastening screws are used to pass through the capacitor terminal of the first capacitor 136 and the waist-round hole fixed with the magnetic ring body 11, and screwed into the threaded hole of the internal copper busbar 12.

[0094] The first capacitor 136 and the second capacitor 138 are both soldered to the circuit board 21 , wherein one end of the first capacitor 136 connected between the two inductors of the LC circuit is connected to the fixing screw through a wire.

[0095] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection; "connected" can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0096] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0097] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A magnetic ring, characterized in that: Applied to inverters, including: ontology; A first copper row via hole passes through the body; A first accommodating chamber is provided on the main body and surrounds the first copper busbar through hole; A first battery cell is disposed in the first storage compartment; A second accommodating chamber is provided on the main body and is arranged around the first copper busbar through hole, and the first accommodating chamber and the second accommodating chamber are arranged side by side in the axial direction of the first copper busbar through hole; The second battery cell is arranged in the second storage compartment.

2. The magnetic ring according to claim 1, characterized in that The main body includes a first body and a second body, the first accommodating compartment is provided in the first body, the second accommodating compartment is provided in the second body, and the magnetic ring further includes: A connecting plate is connected between the first body and the second body.

3. The magnetic ring according to claim 2, characterized in that The first accommodating chamber is formed by an end surface of the first body away from the second body and concave in the direction of the second body; The second accommodating chamber is formed by an end surface of the second body away from the first body being concave inwardly toward the first body.

4. The magnetic ring according to claim 2, characterized in that The magnetic ring further comprises: The first connecting hole is provided on the connecting plate and is communicated with the first copper bus via hole.

5. The magnetic ring according to any one of claims 1 to 4, characterized in that There are two first copper busbar vias, and an insulating partition is provided between the two first copper busbar vias.

6. A connection assembly, characterized in that: include: The magnetic ring according to any one of claims 1 to 5; A copper busbar has one end connected to the inverter and the other end passing through the first copper busbar via hole and extending out of the first copper busbar via hole.

7. The connection assembly according to claim 6, characterized in that The inverter is provided with a terminal, and the terminal is provided with a wiring hole and a second connection hole. The connection component further includes: A third connection hole is provided at one end of the copper busbar close to the inverter, and the end of the copper busbar connected to the inverter extends into the connection hole; A locking member passes through the second connecting hole and the third connecting hole to fix the copper busbar on the terminal.

8. The connection assembly according to claim 6, characterized in that Also includes: an insulating housing, wherein the copper busbar is located away from the inverter and is connected to the insulating housing through a via hole of the first copper busbar; A cable, one end of which is arranged in the insulating shell and connected to the copper bus.

9. The connection assembly according to claim 8, characterized in that The inverter further includes a box body, the box body includes a second copper bar via hole, the second copper bar via hole is arranged corresponding to the first copper bar via hole, and the insulating shell includes: case; A cover plate is provided at one end of the housing, wherein a third copper busbar via hole is provided on the cover plate, and the cover plate can cover the second copper busbar via hole; A sealing member is provided between the cover plate and the box body and is used for sealing the gap between the cover plate and the box body.

10. An inverter, characterized in that: include: A connection assembly as claimed in any one of claims 6 to 9.

11. The inverter according to claim 10, characterized in that: Also includes: a first capacitor, electrically connected to the copper busbar between the first battery cell and the second battery cell; The second capacitor is electrically connected to the copper busbar on a side of the second battery cell away from the first battery cell.

12. The inverter according to claim 11, characterized in that The inverter further includes a circuit board, and the first capacitor and the second capacitor are arranged on the circuit board.

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