Inductor assembly and fuel cell system

Abstract

The utility model provides an inductor assembly and a fuel cell system, the inductor assembly comprises a magnetic core, a first coil assembly and a second coil assembly, the first coil assembly and the second coil assembly are oppositely arranged, the first coil assembly comprises a first coil and a second coil, the first coil and the second coil are arranged around the magnetic core, and signal input ends of the first coil and the second coil are used for receiving current signals; the signal output ends of the first coil and the second coil are used for outputting current signals, the second coil assembly comprises a third coil and a fourth coil, the third coil and the fourth coil are arranged around the magnetic core, and the signal input end of the third coil and the signal input end of the fourth coil are used for receiving the current signals of the first coil or the second coil. The signal output end of the third coil and the signal output end of the fourth coil are used for outputting current signals. The four coils are wound on the same magnetic core and share one magnetic circuit, so that the space occupied by the inductor assembly can be reduced, and the inductor assembly can realize a high-power-density filtering function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell, and in particular to an inductor assembly and a fuel cell system. BACKGROUND

[0002] With the continuous development of hydrogen fuel cell technology, the power level of hydrogen fuel cell vehicles and hydrogen fuel cell systems is continuously rising. This power growth means that the current required in the process of power transmission is gradually increasing. High-power hydrogen fuel cell systems provide stronger power for vehicles, and also provide more reliable energy guarantee for long-distance driving and heavy-load transportation.

[0003] In the related art, multiple common mode inductors occupy a large space and have a high cost, and each common mode inductor needs to be cooled, which is not conducive to the layout of the battery product. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide an inductor assembly and a fuel cell system to reduce the space volume occupied by the inductor assembly and improve the power density of the inductor assembly.

[0005] In a first aspect, the present application provides an inductor assembly, comprising:

[0006] a magnetic core;

[0007] a first coil group, the first coil group comprising a first coil and a second coil, the first coil and the second coil being arranged around the magnetic core, a signal input end of the first coil and a signal input end of the second coil being configured to receive a current signal, and a signal output end of the first coil and a signal output end of the second coil being configured to output the current signal; and

[0008] a second coil group, the second coil group being arranged opposite to the first coil group, the second coil group being connected to the first coil group, the second coil group comprising a third coil and a fourth coil, the third coil and the fourth coil being arranged around the magnetic core, a signal input end of the third coil being configured to receive the current signal of the first coil or the second coil, a signal input end of the fourth coil being configured to receive the current signal of the first coil or the second coil, and a signal output end of the third coil and a signal output end of the fourth coil being configured to output the current signal.

[0009] The inductance assembly provided by the embodiment can reduce the cost by winding four coils on the same magnetic core and sharing one magnetic circuit. The inductance assembly can effectively replace the traditional two series common mode inductances, realize the magnetic integration of the two-stage common mode inductances, and realize the filtering effect of the two-stage common mode inductances. The integrated design of the inductance assembly can save the space occupied by multiple common mode inductances in the fuel cell system, improve the space utilization efficiency of the fuel cell system, and enable the inductance assembly to realize the high-power-density filtering function. The integrated design of the inductance assembly can also facilitate the heat dissipation design of the inductance assembly, so that the inductance assembly can have higher heat dissipation efficiency. The inductance assembly can realize efficient electromagnetic interference suppression, effectively suppress the interference in the current transmission in the fuel cell system when a large current is transmitted, and thus reduce the electromagnetic interference of the entire fuel cell system and the hydrogen fuel cell vehicle, and ensure the safe and reliable operation of the fuel cell system.

[0010] The signal input end of the first coil and the signal input end of the second coil are located on the same side, and the signal output end of the third coil and the signal output end of the fourth coil are located on the same side.

[0011] The inductance assembly further comprises a first filter assembly, and the first filter assembly comprises:

[0012] A first capacitor, wherein one end of the first capacitor is connected to the signal input end of the first coil and the other end of the first capacitor is connected to the signal input end of the second coil.

[0013] A second capacitor and a third capacitor, wherein one end of the second capacitor is grounded and the other end of the second capacitor is connected to the signal input end of the first coil, and one end of the third capacitor is grounded and the other end of the third capacitor is connected to the signal input end of the second coil.

[0014] The inductance assembly further comprises a plurality of connection terminals, and the plurality of connection terminals are respectively arranged at the signal input ends of the first coil and the second coil.

[0015] The connection terminal comprises a main body portion, a connection portion, and a bent portion, the bent portion is bent relative to the main body portion, the connection portion is connected to the bent portion through the main body portion, and the bent portion is sleeved on the signal input end.

[0016] The connection portion is provided with a connection hole, and a terminal post arranged in the connection hole connects one end of the first capacitor to the connection portion, and the two ends of the first capacitor are respectively connected to the signal input end of the first coil and the signal input end of the second coil through the connection portion.

[0017] The inductance assembly further comprises a second filter assembly, and the second filter assembly comprises:

[0018] a fourth capacitor, one end of the fourth capacitor being connected to the signal output end of the third coil and the other end of the fourth capacitor being connected to the signal output end of the fourth coil;

[0019] and / or a fifth capacitor and a sixth capacitor, one end of the fifth capacitor being connected to the signal output end of the third coil and the other end of the fifth capacitor being connected to the ground, one end of the sixth capacitor being connected to the signal output end of the third coil and the other end of the sixth capacitor being connected to the ground.

[0020] wherein the inductive assembly further comprises a plurality of connection terminals, the plurality of connection terminals being respectively arranged at the signal output ends of the third coil and the fourth coil;

[0021] the connection terminal comprising a main body portion, a connection portion and a bent portion, the bent portion being bent relative to the main body portion, the connection portion being connected to the bent portion through the main body portion, the bent portion being sleeved on the signal output end;

[0022] the connection portion being provided with a connection hole, a terminal post arranged in the connection hole connecting any one end of the fourth capacitor to the connection portion, both ends of the fourth capacitor being connected to the signal output end of the third coil and the signal output end of the fourth coil respectively through the connection portion.

[0023] wherein the signal output end of the first coil is connected to the signal input end of the third coil, and the signal output end of the second coil is connected to the signal input end of the fourth coil.

[0024] wherein the inductive assembly further comprises a third filter assembly, the third filter assembly comprising:

[0025] a seventh capacitor, one end of the seventh capacitor being connected to the signal output end of the first coil and the other end of the seventh capacitor being connected to the signal output end of the second coil, the seventh capacitor being further connected to the signal input end of the third coil and the signal input end of the fourth coil respectively;

[0026] and / or an eighth capacitor and a ninth capacitor, one end of the eighth capacitor being connected to the signal output end of the first coil and the other end of the eighth capacitor being connected to the signal input end of the third coil, one end of the ninth capacitor being connected to the signal output end of the second coil and the other end of the ninth capacitor being connected to the signal input end of the fourth coil.

[0027] wherein the inductive assembly further comprises a plurality of adapter terminals, the signal output end of the first coil and the signal input end of the third coil being connected through the adapter terminals, and the signal output end of the second coil and the signal input end of the fourth coil being connected through the adapter terminals;

[0028] The adapter terminal comprises a first adapter part, a second adapter part and a wiring part, the first adapter part and the second adapter part are connected by bending, the first adapter part is connected to the signal output end, the second adapter part is connected to the signal input end, and the wiring part is formed on the first adapter part or the second adapter part;

[0029] The wiring part is provided with a wiring hole, and a wiring column arranged in the wiring hole connects one end of the seventh capacitor and the eighth capacitor to the wiring part or connects one end of the seventh capacitor and the ninth capacitor to the wiring part; wherein one end of the seventh capacitor and the eighth capacitor is connected to the signal output end of the first coil and the signal input end of the third coil through the wiring part, and one end of the seventh capacitor and the ninth capacitor is connected to the signal output end of the second coil and the signal input end of the fourth coil through the wiring part.

[0030] In a second aspect, the application provides a fuel cell system, wherein the inductance assembly is arranged in the fuel cell system, and the inductance assembly is used for filtering a current signal in the fuel cell system. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0032] Figure 1 is a structural schematic diagram of an inductance assembly provided by the embodiment of the application Figure 1 ;

[0033] Figure 2 is a structural schematic diagram of an inductance assembly provided by the embodiment of the application Figure 2 ;

[0034] Figure 3 is a structural schematic diagram of an inductance assembly provided by the embodiment of the application Figure 3 ;

[0035] Figure 4 is a structural schematic diagram of a connection terminal provided by the embodiment of the application

[0036] Figure 5 is a structural schematic diagram of an adapter terminal provided by the embodiment of the application

[0037] Figure 6 is a structural schematic diagram of a fuel cell system provided by the embodiment of the application.

[0038] Explanation of reference numerals:

[0039] Fuel cell system 1000, inductor assembly 100, magnetic core 10, first magnetic core portion 11, second magnetic core portion 12, first coil group 20, first coil 21, second coil 22, second coil group 30, third coil 31, fourth coil 32, first filter assembly 40, first capacitor 41, second capacitor 42, third capacitor 43, first circuit board 44, connection terminal 50, main body portion 51, connection portion 52, bent portion 53, first connection terminal 501, second connection terminal 502, third connection terminal 503, fourth connection terminal 504, second filter assembly 60, fourth capacitor 61, fifth capacitor 62, sixth capacitor 63, second circuit board 64, third filter assembly 70, seventh capacitor 71, eighth capacitor 72, ninth capacitor 73, third circuit board 74, adapter terminal 80, first adapter portion 81, second adapter portion 82, wiring portion 83, first adapter terminal 801, second adapter terminal 802, insulating base 90. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0041] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0042] In the present specification, in order to facilitate the description and simplify the description, the words indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are used to describe the positional relationship of the components with reference to the drawings, and are only for the convenience of the description of the present specification and the simplification of the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. The positional relationship of the components is appropriately changed according to the direction of the described components. Therefore, it is not limited to the words described in the specification, and can be appropriately replaced according to the situation.

[0043] In this specification, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate parts, or internal connection of two elements. For those skilled in the art, the meaning of the above terms in this disclosure can be understood according to the circumstances.

[0044] With the progress of hydrogen fuel cell technology, the power of hydrogen fuel cell vehicles and fuel cell systems is increasing, and the current of the corresponding power transmission is also increasing. High-power fuel cell systems provide strong power for vehicles, but their complex control systems are particularly sensitive to electromagnetic environments, and slight electromagnetic interference may affect their normal operation, and serious electromagnetic interference may cause the entire fuel cell system to fail to work.

[0045] Therefore, during the design and manufacturing process of the fuel cell system, the electromagnetic compatibility problem must be fully considered to strengthen the electromagnetic protection capability of the fuel cell system, so as to ensure the safe and reliable operation of the fuel cell system and the hydrogen fuel cell vehicle.

[0046] In the existing electromagnetic interference suppression technology of the fuel cell system, a single common mode inductor is usually used, or two common mode inductors are used in series to achieve the suppression of electromagnetic interference of the fuel cell system. However, the use of multiple common mode inductors occupies a large space, which is not conducive to the space layout inside the vehicle and the fuel cell system. Especially in compact vehicles or fuel cell systems, this disadvantage of occupying space is more prominent.

[0047] In addition, the use of multiple common mode inductors is also not conducive to reducing the economic cost of the hydrogen fuel cell vehicle and the fuel cell system. In addition, each common mode inductor needs to be cooled, which also increases the complexity and maintenance cost of the fuel cell system, which is not conducive to the space layout and electromagnetic compatibility (EMC) design inside the fuel cell system.

[0048] In view of this, in order to solve the above problems, the present application provides an inductor assembly 100. Please refer to Figure 1The inductance assembly 100 of the embodiment includes a magnetic core 10, a first coil set 20, and a second coil set 30. The first coil set 20 includes a first coil 21 and a second coil 22, which are arranged around one end of the magnetic core 10. The signal input end of the first coil 21 and the signal input end of the second coil 22 are configured to receive a current signal, and the signal output end of the first coil 21 and the signal output end of the second coil 22 are configured to output the current signal. The second coil set 30 is arranged opposite to the first coil set 20, and is connected to the first coil set 20. The second coil set 30 includes a third coil 31 and a fourth coil 32, which are arranged around the other end of the magnetic core 10. The signal input end of the third coil 31 is configured to receive the current signal of the first coil 21 or the second coil 22, the signal input end of the fourth coil 32 is configured to receive the current signal of the first coil 21 or the second coil 22, and the signal output end of the third coil 31 and the signal output end of the fourth coil 32 are configured to output the current signal.

[0049] Optionally, the inductance assembly 100 is applied to the fuel cell system 1000, and is configured to suppress electromagnetic interference in the fuel cell system 1000.

[0050] The inductance assembly 100 further includes an insulating base 90, which is configured to fix the magnetic core 10, the first coil set 20, and the second coil set 30.

[0051] Specifically, the inductance assembly 100 includes the magnetic core 10, the first coil set 20, and the second coil set 30. The first coil set 20 and the second coil set 30 are arranged on opposite sides of the magnetic core 10.

[0052] The magnetic core 10 can be, but is not limited to, a ferrite magnetic core 10. Optionally, the magnetic core 10 is annular or approximately annular. Further, in the embodiment, the magnetic core 10 includes a first magnetic core portion 11 and a second magnetic core portion 12 connected to each other. The first coil 21 and the second coil 22 are arranged around the first magnetic core portion 11, and the third coil 31 and the fourth coil 32 are arranged around the second magnetic core portion 12. It should be noted that, in the embodiment, the first magnetic core portion 11 and the second magnetic core portion 12 are integrally formed. The present application distinguishes and names them for the convenience of description, and should not be construed as a limitation of the present application.

[0053] The signal input end of the first coil 21 and the signal input end of the second coil 22 are configured to receive a current signal. The first coil 21, the second coil 22, and the first magnetic core portion 11 cooperate and are configured to filter interference signals in the current signal. The signal output end of the first coil 21 and the signal output end of the second coil 22 are configured to output the filtered current signal.

[0054] Further, the first coil 21 and the second coil 22 have the same size and the same number of turns, are both wound on the first magnetic core part 11, and are arranged apart from each other. Specifically, when normal current flows through the first coil group 20, the normal current generates magnetic fields in the first coil 21 and the second coil 22 in opposite directions and cancels out each other, and can normally pass through the first coil group 20. When common-mode current flows through the first coil group 20, the common-mode current generates magnetic fields in the first coil 21 and the second coil 22 in the same direction, so that the first coil 21 and the second coil 22 exhibit high impedance and generate a strong damping effect, thereby attenuating the common-mode current and achieving the filtering effect.

[0055] The signal input end of the third coil 31 is configured to receive the filtered current signal of the first coil 21 or the second coil 22, the signal input end of the fourth coil 32 is configured to receive the filtered current signal of the first coil 21 or the second coil 22, the third coil 31, the fourth coil 32, and the second magnetic core part 12 cooperate and are configured to filter the interference signal in the current signal again, and the other end of the third coil 31 and the signal output end of the fourth coil 32 are commonly configured to output the current signal filtered again. It should be noted that, in the embodiment, the signal input end of the third coil 31 is configured to receive the filtered current signal of the first coil 21, and the signal input end of the fourth coil 32 is configured to receive the filtered current signal of the second coil 22, but in other embodiments, the signal input end of the third coil 31 can be configured to receive the filtered current signal of the second coil 22, and the signal input end of the fourth coil 32 can be configured to receive the filtered current signal of the first coil 21, which is not limited in the present application.

[0056] In other words, in the embodiment, the signal output end of the first coil 21 is connected to the signal input end of the third coil 31, and the signal output end of the second coil 22 is connected to the signal input end of the fourth coil 32. Alternatively, in the embodiment, the signal output end of the first coil 21 can be connected to the signal input end of the fourth coil 32, and the signal output end of the second coil 22 can be connected to the signal input end of the third coil 31, which is not limited in the present application.

[0057] Further, the third coil 31 and the fourth coil 32 have the same size and the same number of turns, are both wound on the second magnetic core portion 12, and are arranged apart from each other. Specifically, when normal current flows through the second coil group 30, the normal current generates magnetic fields in the third coil 31 and the fourth coil 32 in opposite directions and cancels out, and can normally pass through the second coil group 30. When common-mode current flows through the second coil group 30, the common-mode current generates magnetic fields in the third coil 31 and the fourth coil 32 in the same direction, so that the third coil 31 and the fourth coil 32 exhibit high impedance and generate a strong damping effect, thereby attenuating the common-mode current and achieving the filtering effect.

[0058] The first coil group 20 and the second coil group 30 are arranged opposite to each other on both sides of the magnetic core 10, and are both wound on the same magnetic core 10. The first coil group 20 and the second coil group 30 can achieve the effect of two-stage filtering of current signals. In other words, in the working process of the inductance assembly 100, the current signal is first filtered by the first coil group 20 and then filtered by the second coil group 30, thereby effectively replacing the conventional two common-mode inductances in series.

[0059] In summary, the inductance assembly 100 provided by the embodiment winds four coils on the same magnetic core 10 and shares a magnetic circuit, which can reduce costs. Moreover, the inductance assembly 100 can effectively replace the conventional two common-mode inductances in series, achieve magnetic integration of two-stage common-mode inductances, and achieve the filtering effect of two-stage common-mode inductances. The integrated design of the inductance assembly 100 can save the space occupied by multiple common-mode inductances in the fuel cell system 1000, improve the space utilization efficiency inside the fuel cell system 1000, and enable the inductance assembly 100 to achieve high-power-density filtering functions. The integrated design of the inductance assembly 100 also facilitates heat dissipation design, so that the inductance assembly 100 can have higher heat dissipation efficiency. The inductance assembly 100 can achieve efficient electromagnetic interference suppression, effectively suppress interference in current transmission inside the fuel cell system 1000 when large current transmission of the fuel cell system 1000 is met, thereby reducing electromagnetic interference of the entire fuel cell system 1000 and the hydrogen fuel cell vehicle, and ensuring safe and reliable operation of the fuel cell system 1000.

[0060] Optionally, in the embodiment, the signal input end of the first coil 21 and the signal input end of the second coil 22 are located on the same side, and the signal output end of the third coil 31 and the signal output end of the fourth coil 32 are located on the same side.

[0061] In other embodiments, the signal input end of the first coil 21 and the signal input end of the second coil 22 are located on two sides, and the signal output end of the third coil 31 and the signal output end of the fourth coil 32 are located on two sides, which is not limited in the present application.

[0062] Please refer to Figure 2 and Figure 3 The inductance assembly 100 further comprises a first filter assembly 40, and the first filter assembly 40 comprises a first capacitor 41 and / or a second capacitor 42, and a third capacitor 43. It should be noted that in the embodiment, the first filter assembly 40 comprises the first capacitor 41, the second capacitor 42, and the third capacitor 43. In other embodiments, the first filter assembly 40 can only comprise the first capacitor 41, or the first filter assembly 40 can only comprise the second capacitor 42 and the third capacitor 43, which is not limited in the present application.

[0063] Specifically, the first capacitor 41 is connected to the signal input end of the first coil 21 and the signal input end of the second coil 22, respectively. One end of the second capacitor 42 is grounded, and the other end is connected to the signal input end of the first coil 21. One end of the third capacitor 43 is grounded, and the other end is connected to the signal input end of the second coil 22.

[0064] Among them, one end of the first capacitor 41 receives the positive signal in the current signal, and the other end of the first capacitor 41 receives the negative signal in the current signal. The first capacitor 41 is used to assist in filtering the interference signal in the current signal.

[0065] Optionally, the first capacitor 41 is a filter X capacitor and is used to eliminate differential mode interference. The second capacitor 42 and the third capacitor 43 are filter Y capacitors and are used to eliminate common mode interference.

[0066] In the embodiment, the first filter assembly 40 can filter the current signal input to the inductance assembly 100 through the first capacitor 41, the second capacitor 42, and the third capacitor 43, so that the interference signal in the current signal can be eliminated more fully and completely, thereby effectively reducing the electromagnetic interference inside the fuel cell system 1000, and further improving the reliability of the fuel cell system 1000.

[0067] Please refer to Figures 1 to 4The inductor assembly 100 further comprises a plurality of connection terminals 50, which are respectively arranged at the signal output ends of the third coil 31 and the fourth coil 32. The connection terminal 50 comprises a main body part 51, a connecting part 52 and a bent part 53. The bent part 53 is bent relative to the main body part 51. The connecting part 52 is connected to the bent part 53 through the main body part 51. The bent part 53 is sleeved on the signal input end or the signal output end. It should be noted that in the embodiment, the main body part 51, the connecting part 52 and the bent part 53 are integrally formed. The present application distinguishes and names them for the convenience of description, and should not be understood as a limitation of the present application.

[0068] The connecting part 52 is provided with a connecting hole. A terminal post arranged in the connecting hole connects any one end of the first capacitor 41 to the connecting part 52. The two ends of the first capacitor 41 are respectively connected to the signal input end of the first coil 21 and the signal input end of the second coil 22 through the connecting part 52.

[0069] Specifically, in the embodiment, the plurality of connection terminals 50 comprises a first connection terminal 501 and a second connection terminal 502. The first connection terminal 501 and the second connection terminal 502 are similar in structure. The first connection terminal 501 also comprises a main body part 51, a connecting part 52 and a bent part 53. The second connection terminal 502 also comprises a main body part 51, a connecting part 52 and a bent part 53. The connecting part 52 of the first connection terminal 501 and the connecting part 52 of the second connection terminal 502 are respectively connected to the two ends of the first capacitor 41. The bent part 53 of the first connection terminal 501 is sleeved and connected to the signal input end of the first coil 21. The bent part 53 of the second connection terminal 502 is sleeved and connected to the signal input end of the second coil 22.

[0070] Further, the first filter assembly 40 further comprises a first circuit board 44. The first capacitor 41, the second capacitor 42 and the third capacitor 43 are arranged on one side of the first circuit board 44 and are electrically connected to the first circuit board 44. The first connection terminal 501 and the second connection terminal 502 are arranged on the other side of the first circuit board 44. The connecting part 52 of the first connection terminal 501 is electrically connected to the first circuit board 44 through the terminal post of the connecting hole. The connecting part 52 of the second connection terminal 502 is electrically connected to the first circuit board 44 through the terminal post of the connecting hole. The first connection terminal 501 and the second connection terminal 502 are electrically connected to the first circuit board 44 through the terminal post. Compared with the connection mode using a wire harness, a copper bar or other components, the inductor assembly 100 can have a relatively small volume and a high integration degree, thereby saving the occupied space of the inductor assembly 100 in the fuel cell system 1000.

[0071] The two ends of the first capacitor 41 are connected to the signal input end of the first coil 21 and the signal input end of the second coil 22 respectively through the first circuit board 44, the two ends of the second capacitor 42 are connected to the ground and the signal input end of the first coil 21 respectively through the first circuit board 44, and the two ends of the third capacitor 43 are connected to the ground and the signal input end of the second coil 22 respectively through the first circuit board 44.

[0072] Referring to Figures 1 to 4 , the inductance assembly 100 further comprises a second filter assembly 60, the second filter assembly 60 comprises a fourth capacitor 61 and / or a fifth capacitor 62, a sixth capacitor 63. It should be noted that in the embodiment, the second filter assembly 60 comprises the fourth capacitor 61, the fifth capacitor 62 and the sixth capacitor 63, and in other embodiments, the second filter assembly 60 can only comprise the fourth capacitor 61, or the second filter assembly 60 can only comprise the fifth capacitor 62 and the sixth capacitor 63, which is not limited in the present application.

[0073] Specifically, the fourth capacitor 61 is connected to the signal output end of the third coil 31 and the signal output end of the fourth coil 32 respectively, one end of the fifth capacitor 62 is connected to the ground, and the other end is connected to the signal output end of the third coil 31; one end of the sixth capacitor 63 is connected to the ground, and the other end is connected to the signal output end of the third coil 31.

[0074] Among them, one end of the fourth capacitor 61 receives the positive signal in the current signal, the other end of the fourth capacitor 61 receives the negative signal in the current signal, and the fourth capacitor 61 is used to assist in filtering the interference signal in the current signal.

[0075] Optionally, the fourth capacitor 61 is a filter X capacitor and is used to eliminate differential mode interference. The fifth capacitor 62 and the sixth capacitor 63 are filter Y capacitors and are used to eliminate common mode interference.

[0076] In the embodiment, the second filter assembly 60 can filter the current signal input to the inductance assembly 100 through the fourth capacitor 61, the fifth capacitor 62 and the sixth capacitor 63, so that the interference signal in the current signal can be eliminated more fully and completely, thereby effectively reducing the electromagnetic interference inside the fuel cell system 1000, and further improving the reliability of the fuel cell system 1000.

[0077] Referring to Figures 1 to 4 , the inductance assembly 100 further comprises a plurality of connection terminals 50, the plurality of connection terminals 50 are respectively arranged at the signal output ends of the third coil 31 and the fourth coil 32, the connection terminal 50 comprises a main body part 51, a connecting part 52 and a bending part 53, the bending part 53 is bent relative to the main body part 51, the connecting part 52 is connected to the bending part 53 through the main body part 51, and the bending part 53 is sleeved on the signal input end or the signal output end.

[0078] The connecting part 52 has a connecting hole, and the terminal block in the connecting hole connects any one end of the fourth capacitor 61 to the connecting part 52. The two ends of the fourth capacitor 61 are respectively connected to the signal output terminal of the third coil 31 and the signal output terminal of the fourth coil 32 through the connecting part 52.

[0079] Specifically, in this embodiment, the plurality of connection terminals 50 include a third connection terminal 503 and a fourth connection terminal 504. The third connection terminal 503 and the fourth connection terminal 504 have similar structures, and the third connection terminal 503 also includes a main body portion 51, a connecting portion 52, and a bending portion 53, and the fourth connection terminal 504 also includes a main body portion 51, a connecting portion 52, and a bending portion 53. The connecting portion 52 of the third connection terminal 503 and the connecting portion 52 of the fourth connection terminal 504 are respectively connected to the two ends of the fourth capacitor 61. The bending portion 53 of the third connection terminal 503 is fitted and connected to the signal output terminal of the third coil 31, and the bending portion 53 of the fourth connection terminal 504 is fitted and connected to the signal output terminal of the fourth coil 32.

[0080] Furthermore, the second filter assembly 60 also includes a second circuit board 64. A fourth capacitor 61, a fifth capacitor 62, and a sixth capacitor 63 are disposed on one side of the second circuit board 64 and electrically connected to it. A third connection terminal 503 and a fourth connection terminal 504 are disposed on the other side of the second circuit board 64. The connection portion 52 of the third connection terminal 503 is electrically connected to the second circuit board 64 through a terminal in a connection hole. The connection portion 52 of the fourth connection terminal 504 is also electrically connected to the second circuit board 64 through a terminal in a connection hole. Compared to using wire harnesses, copper busbars, or other components for connection, the inductor assembly 100 can have a relatively small size and a highly integrated design, thereby saving space occupied by the inductor assembly 1000 in the fuel cell system 1000.

[0081] The two ends of the fourth capacitor 61 are connected to the signal output terminals of the third coil 31 and the fourth coil 32 respectively through the second circuit board 64. The two ends of the fifth capacitor 62 are grounded and connected to the signal output terminal of the third coil 31 respectively through the second circuit board 64. The two ends of the sixth capacitor 63 are grounded and connected to the signal output terminal of the fourth coil 32 respectively through the second circuit board 64.

[0082] It should be noted that in the embodiment, the main body 51 of the first connecting terminal 501 and the second connecting terminal 502 is provided with a signal input hole, the first connecting terminal 501 and the second connecting terminal 502 are electrically connected to an external current signal input device through the signal input hole, and the main body 51 of the third connecting terminal 503 and the fourth connecting terminal 504 is provided with a signal output hole, and the third connecting terminal 503 and the fourth connecting terminal 504 are electrically connected to an external current signal receiving device through the signal output hole.

[0083] Please refer to Figures 1 to 4 , the inductance assembly 100 further comprises a third filter assembly 70, the third filter assembly 70 comprises a seventh capacitor 71 and / or an eighth capacitor 72, a ninth capacitor 73. It should be noted that in the embodiment, the third filter assembly 70 comprises the seventh capacitor 71, the eighth capacitor 72 and the ninth capacitor 73, in other embodiments, the third filter assembly 70 can also only comprise the seventh capacitor 71, or the third filter assembly 70 can also only comprise the eighth capacitor 72 and the ninth capacitor 73, which is not limited by the present application.

[0084] Specifically, the seventh capacitor 71 is connected to the signal output end of the first coil 21 and the signal output end of the second coil 22 respectively, and the seventh capacitor 71 is also connected to the signal input end of the third coil 31 and the signal input end of the fourth coil 32 respectively, one end of the eighth capacitor 72 is grounded, and the other end is connected to the signal output end of the first coil 21 and the signal input end of the third coil 31, one end of the ninth capacitor 73 is grounded, and the other end is connected to the signal output end of the second coil 22 and the signal input end of the fourth coil 32.

[0085] Among them, one end of the seventh capacitor 71 receives the positive signal in the current signal, the other end of the seventh capacitor 71 receives the negative signal in the current signal, and the seventh capacitor 71 is used to assist in filtering the interference signal in the current signal.

[0086] Optionally, the seventh capacitor 71 is a filter X capacitor and is used to eliminate differential mode interference. The eighth capacitor 72 and the ninth capacitor 73 are filter Y capacitors and are used to eliminate common mode interference.

[0087] In the embodiment, the third filter assembly 70 can filter the current signal input to the inductance assembly 100 through the seventh capacitor 71, the eighth capacitor 72 and the ninth capacitor 73, so that the interference signal in the current signal can be eliminated more fully and completely, thereby effectively reducing the electromagnetic interference inside the fuel cell system 1000, and further improving the reliability of the fuel cell system 1000.

[0088] And, in the embodiment, the third filter assembly 70 is arranged between the first coil assembly 20 and the second coil assembly 30, and the third filter assembly 70 can play an auxiliary filtering role, that is, the third filter assembly 70 can re-filter the interference signal in the current signal, thereby eliminating the interference signal that the first coil assembly 20 fails to filter out, so that the inductance assembly 100 can have sufficient filtering effect on the current signal, and further ensure that the electromagnetic interference inside the fuel cell system 1000 can be effectively suppressed. In addition, compared with the traditional two series common mode inductors each separately provided with a filter capacitor, the inductance assembly 100 provided by the embodiment realizes integrated design of the common mode inductor and the filter capacitor, thereby further improving the space utilization efficiency inside the fuel cell system 1000 and realizing high-power-density filtering function.

[0089] Referring to Figures 1 to 5 The inductance assembly 100 further comprises a plurality of adapter terminals 80, the signal output end of the first coil 21 and the signal input end of the third coil 31 are connected through the adapter terminal 80, and the signal output end of the second coil 22 and the signal input end of the fourth coil 32 are connected through the adapter terminal 80.

[0090] The adapter terminal 80 is provided with a first adapter part 81, a second adapter part 82, and a wiring part 83, the first adapter part 81 and the second adapter part 82 are connected by bending, the first adapter part 81 is connected to the signal output end, the second adapter part 82 is connected to the signal input end, and the wiring part 83 is formed on the first adapter part 81 or the second adapter part 82. It should be noted that in the embodiment, the first adapter part 81, the second adapter part 82, and the wiring part 83 are integrally formed, and the present application is distinguished and named for the convenience of description, and should not be understood as a limitation of the present application.

[0091] The wiring part 83 is provided with a wiring hole, and a wiring post arranged in the wiring hole connects one end of the seventh capacitor 71 and the eighth capacitor 72 to the wiring part 83, or connects one end of the seventh capacitor 71 and the ninth capacitor 73 to the wiring part 83. Among them, one end of the seventh capacitor 71 and the eighth capacitor 72 is connected to the signal output end of the first coil 21, the signal input end of the third coil 31 through the wiring part 83, and one end of the seventh capacitor and the ninth capacitor 73 is connected to the signal output end of the second coil 22, the signal input end of the fourth coil 32 through the wiring part 83.

[0092] Specifically, in the present embodiment, the plurality of adapter terminals 80 include a first adapter terminal 801 and a second adapter terminal 802, the first adapter terminal 801 and the second adapter terminal 802 are similar in structure, and the first adapter terminal 801 also includes the first adapter part 81, the second adapter part 82 and the wiring part 83, and the second adapter terminal 802 also includes the first adapter part 81, the second adapter part 82 and the wiring part 83. Wherein the first adapter part 81 of the first adapter terminal 801 is connected to the signal output end of the first coil 21, the second adapter part 82 of the first adapter terminal 801 is connected to the signal input end of the third coil 31, the first adapter part 81 of the second adapter terminal 802 is connected to the signal output end of the second coil 22, and the second adapter part 82 of the second adapter terminal 802 is connected to the signal input end of the fourth coil 32.

[0093] Further, the third filter assembly 70 also includes a third circuit board 74, the seventh capacitor 71, the eighth capacitor 72 and the ninth capacitor 73 are arranged on one side of the third circuit board 74 and are electrically connected to the third circuit board 74, and the first adapter terminal 801 and the second adapter terminal 802 are arranged on the other side of the third circuit board 74, the wiring part 83 of the first adapter terminal 801 is electrically connected to the third circuit board 74 through the wiring hole and the wiring post, and the wiring part 83 of the second adapter terminal 802 is electrically connected to the third circuit board 74 through the wiring hole and the wiring post. The first adapter terminal 801 and the second adapter terminal 802 are electrically connected to the third circuit board 74 through the wiring post, compared with the connection mode of using a wire harness, or a copper bar or other components, the inductance assembly 100 can have a relatively small volume, and has a high integration design, thereby saving the occupied space of the inductance assembly 100 in the fuel cell system 1000.

[0094] The two ends of the seventh capacitor 71 are respectively connected to the signal output end of the first coil 21, the signal output end of the second coil 22, the signal input end of the third coil 31 and the signal input end of the fourth coil 32 through the third circuit board 74, the two ends of the eighth capacitor 72 are respectively grounded and connected to the signal output end of the first coil 21 and the signal input end of the third coil 31 through the third circuit board 74, and the two ends of the ninth capacitor 73 are respectively grounded and connected to the signal output end of the second coil 22 and the signal input end of the fourth coil 32 through the third circuit board 74.

[0095] In the embodiment, the first adapter terminal 801 and the second adapter terminal 802 are used to transmit the filtered current signal of the first coil group 20 to the second coil group 30, so that the inductance assembly 100 realizes the effect of two-stage filtering of the current signal. Compared with the traditional two separate common-mode inductors connected in series by using a wire harness, a copper bar or other connecting members, the inductance assembly 100 provided by the embodiment realizes the current transmission between the first coil group 20 and the second coil group 30 through the first adapter terminal 801 and the second adapter terminal 802, which can effectively save the space occupied by the inductance assembly 100 in the fuel cell system 1000, and effectively improve the space utilization efficiency inside the fuel cell system 1000.

[0096] Referring to Figures 1 to 6 The application also provides a fuel cell system 1000, which comprises the inductance assembly 100 arranged in the fuel cell system 1000, and the inductance assembly 100 is used to filter the current signal in the fuel cell system 1000.

[0097] Optionally, the fuel cell system 1000 is applied to a hydrogen fuel cell vehicle, and provides electric energy for the hydrogen fuel cell vehicle.

[0098] In the embodiment, the inductance assembly 100 arranged inside the fuel cell system 1000 can realize the effects of magnetic integration and two-stage common-mode inductance filtering, which can improve the space utilization efficiency inside the fuel cell system 1000, and also enable the inductance assembly 100 to realize the filtering function with high power density. When the inductance assembly 100 transmits a large current in the fuel cell system 1000, it can effectively suppress the interference in the current transmission inside the fuel cell system 1000, thereby reducing the electromagnetic interference of the entire fuel cell system 1000 and the hydrogen fuel cell vehicle, and ensuring that the fuel cell system 1000 and the hydrogen fuel cell vehicle can operate stably.

[0099] In the present application, the phrase "embodiment" or "embodiments" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily mean the same embodiment, nor is it independent or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments. In addition, it should be understood that the features, structures or characteristics described in the embodiments of the present application can be combined with each other without contradiction, to form another embodiment which does not depart from the spirit and scope of the technical solution of the present application.

[0100] The above are some embodiments of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements also considered the scope of protection of the present application.

Claims

1. An inductive component, characterized by The inductance component comprises: a magnetic core; a first coil group comprising a first coil and a second coil, the first coil and the second coil being arranged around the magnetic core, a signal input end of the first coil and a signal input end of the second coil being used to receive a current signal, and a signal output end of the first coil and a signal output end of the second coil being used to output a current signal; and a second coil group arranged opposite to the first coil group, the second coil group being connected to the first coil group, the second coil group comprising a third coil and a fourth coil, the third coil and the fourth coil being arranged around the magnetic core, a signal input end of the third coil being used to receive a current signal of the first coil or the second coil, a signal input end of the fourth coil being used to receive a current signal of the first coil or the second coil, and a signal output end of the third coil and a signal output end of the fourth coil being used to output a current signal.

2. The inductive component of claim 1, wherein, The signal input end of the first coil and the signal input end of the second coil are located on the same side, and the signal output end of the third coil and the signal output end of the fourth coil are located on the same side.

3. The inductive component of claim 2, wherein, The inductance component further comprises a first filter component, the first filter component comprising: a first capacitor connected to the signal input end of the first coil and the signal input end of the second coil respectively; and / or a second capacitor and a third capacitor, one end of the second capacitor being grounded, and the other end of the second capacitor being connected to the signal input end of the first coil, one end of the third capacitor being grounded, and the other end of the third capacitor being connected to the signal input end of the second coil.

4. The inductive component of claim 3, wherein, The inductance component further comprises a plurality of connection terminals, the plurality of connection terminals being arranged at the signal input end of the first coil and the second coil respectively; the connection terminal comprising a main body portion, a connection portion, and a bent portion, the bent portion being bent relative to the main body portion, the connection portion being connected to the bent portion through the main body portion, and the bent portion being sleeved on the signal input end; the connection portion being provided with a connection hole, a terminal post arranged in the connection hole connecting any one end of the first capacitor to the connection portion, and the two ends of the first capacitor being connected to the signal input end of the first coil and the signal input end of the second coil through the connection portion respectively.

5. The inductive component of claim 2, wherein, The inductance component further comprises a second filter component, the second filter component comprising: a fourth capacitor connected to the signal output end of the third coil and the signal output end of the fourth coil respectively; and / or a fifth capacitor and a sixth capacitor, one end of the fifth capacitor being grounded, and the other end of the fifth capacitor being connected to the signal output end of the third coil, one end of the sixth capacitor being grounded, and the other end of the sixth capacitor being connected to the signal output end of the third coil.

6. The inductive component of claim 5, wherein, The inductance component further comprises a plurality of connection terminals, the plurality of connection terminals being arranged at the signal output end of the third coil and the fourth coil respectively; the connection terminal comprising a main body portion, a connection portion, and a bent portion, the bent portion being bent relative to the main body portion, the connection portion being connected to the bent portion through the main body portion, and the bent portion being sleeved on the signal output end; The connecting hole is provided with a connecting post arranged in the connecting hole, which connects one end of the fourth capacitor to the connecting part, and the two ends of the fourth capacitor are connected to the signal output end of the third coil and the signal output end of the fourth coil respectively through the connecting part.

7. The inductive component of claim 2, wherein, The signal output end of the first coil is connected to the signal input end of the third coil, and the signal output end of the second coil is connected to the signal input end of the fourth coil.

8. The inductive component of claim 7, wherein, The inductance assembly further comprises a third filter assembly, which comprises: a seventh capacitor, which is connected to the signal output end of the first coil and the signal output end of the second coil respectively, and is also connected to the signal input end of the third coil and the signal input end of the fourth coil respectively; and / or an eighth capacitor and a ninth capacitor, one end of the eighth capacitor is grounded, and the other end is connected to the signal output end of the first coil, the signal input end of the third coil, one end of the ninth capacitor is grounded, and the other end is connected to the signal output end of the second coil, the signal input end of the fourth coil.

9. The inductive component of claim 8, wherein, The inductance assembly further comprises a plurality of adapter terminals, the signal output end of the first coil and the signal input end of the third coil are connected through the adapter terminals, and the signal output end of the second coil and the signal input end of the fourth coil are connected through the adapter terminals. The adapter terminal has a first adapter part, a second adapter part and a connecting part, the first adapter part and the second adapter part are connected by bending, the first adapter part is connected to the signal output end, the second adapter part is connected to the signal input end, and the connecting part is formed on the first adapter part or the second adapter part. The connecting part is provided with a connecting hole, a connecting post arranged in the connecting hole connects one end of the seventh capacitor and the eighth capacitor to the connecting part, or connects one end of the seventh capacitor and the ninth capacitor to the connecting part; wherein one end of the seventh capacitor and the eighth capacitor is connected to the signal output end of the first coil and the signal input end of the third coil through the connecting part, and one end of the seventh capacitor and the ninth capacitor is connected to the signal output end of the second coil and the signal input end of the fourth coil through the connecting part.

10. A fuel cell system characterized by comprising: The fuel cell system comprises the inductance assembly according to any one of claims 1-9, the inductance assembly is arranged in the fuel cell system, and the inductance assembly is used for filtering current signals in the fuel cell system.

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