Magnetic integrated transformers, charging systems, and vehicles

Abstract

This application relates to the field of vehicle technology, and in particular to a magnetically integrated transformer, a charging system, and a vehicle. The magnetically integrated transformer includes: multiple stacked magnetic components; each magnetic component includes a core carrier and multiple magnetic cores; the core carrier surrounds and forms multiple accommodating cavities with openings, and the magnetic cores are disposed in the accommodating cavities; the openings of adjacent magnetic components are connected; or, the edge of the opening of a magnetic component abuts against the core carrier of its adjacent magnetic component. Through the above methods, this application can decouple the transformer to form a smaller production unit, i.e., a magnetic component. The stacking of multiple magnetic components can reduce the size of the magnetically integrated transformer and also improve the magnetic power density.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a magnetic integrated transformer, a charging system, and a vehicle. Background Technology

[0002] Charging systems, such as on-board chargers, are crucial components for AC-DC conversion and are widely used in vehicle charging. Taking on-board chargers as an example, they utilize transformers, such as magnetic integrated transformers, to achieve vehicle charging and discharging functions. Therefore, in vehicle manufacturing, the magnetic integrated transformer is designed and produced as the smallest unit, resulting in a relatively low density of internal components. This makes it difficult to reduce the size of both the magnetic integrated transformer and the on-board charger while maintaining a relatively low magnetic power density. Utility Model Content

[0003] Based on this, it is necessary to provide a magnetic integrated transformer, charging system, and vehicle to address the above-mentioned technical problems. This allows for the decoupling of the transformer to form smaller production units, i.e., magnetic components. By stacking multiple magnetic components, the volume of the magnetic integrated transformer can be reduced, which also helps to improve the magnetic power density.

[0004] On one hand, a magnetic integrated transformer is provided, comprising: a plurality of magnetic components stacked together; each magnetic component includes a core carrier and a plurality of magnetic cores; the core carrier surrounds and forms a plurality of accommodating cavities with openings, and the magnetic cores are disposed in the accommodating cavities; the openings of adjacent magnetic components are connected; or, the edge of the opening of a magnetic component abuts against the core carrier of the adjacent magnetic component.

[0005] In one embodiment of this application, a plurality of stacked magnetic components include a first magnetic component and a second magnetic component, wherein the opening of the first magnetic component is connected to the opening of the second magnetic component, and the magnetic core of the first magnetic component abuts against the magnetic core of the second magnetic component to form a magnetic element.

[0006] In one embodiment of this application, the magnetic component includes a first magnetic component; the magnetic integrated transformer further includes a first wire turn and a second wire turn, the first wire turn being the primary side of the transformer and the second wire turn being the first secondary side of the transformer; the second wire turn includes a first end, a first tap, and a first sub-wire turn between the two; the first wire turn and the first sub-wire turn are wound in parallel on the first magnetic component.

[0007] In one embodiment of this application, the magnetic component further includes a second magnetic component; the magnetic integrated transformer further includes a third coil, which is the second secondary side of the transformer and includes a second tap of the second secondary side of the transformer; the second coil includes a first tap, a second end, and a second sub-coil between the two; the second sub-coil and the third coil are wound in parallel on the second magnetic component.

[0008] In one embodiment of this application, the plurality of stacked magnetic components further include: a third magnetic component, the edge of the opening of the third magnetic component abutting against the side of the second magnetic component away from the first magnetic component; the third magnetic component includes a third magnetic core and a fourth magnetic core abutting against the second magnetic component.

[0009] In one embodiment of this application, the magnetic integrated transformer further includes a fourth coil, which is a resonant inductor and is wound around the third magnetic core; the fourth coil is also used to connect to the primary side of the transformer.

[0010] In one embodiment of this application, the magnetic integrated transformer further includes a fifth coil, which is a filter inductor and is wound around a fourth magnetic core; the fifth coil is also used to connect to the second tap of the second secondary side of the transformer.

[0011] In one embodiment of this application, the magnetic core carrier further includes a housing bottom away from the opening; the housing bottom includes a bearing area and a flow guide groove; the magnetic core is disposed in the bearing area; the cross-sectional area of ​​the flow guide groove perpendicular to its extension direction increases in the direction away from the bearing area; the flow guide groove is used to connect the receiving cavity with the outside of the receiving cavity.

[0012] On the other hand, a charging system is provided, comprising: a magnetic integrated transformer as described in any of the above embodiments, a primary-side circuit module, a first secondary-side circuit module, and a second secondary-side circuit module; the primary-side circuit module, the first secondary-side circuit module, and the second secondary-side circuit module are respectively connected to the magnetic integrated transformer.

[0013] In another aspect, a vehicle is provided, comprising: a vehicle body and a charging system as described in the above embodiments, wherein the charging system is disposed on the vehicle body.

[0014] The aforementioned magnetic integrated transformer, charging system, and vehicle decouple the frame structure of the magnetic integrated transformer. Unlike related technologies, this application decouples the frame structure into multiple magnetic components, which are stacked to form the magnetic integrated transformer. This means that the magnetic components can replace the traditional transformer frame structure as the smallest production unit of the magnetic integrated transformer. Furthermore, each magnetic component includes a core carrier and multiple magnetic cores, which can be respectively disposed in multiple cavities of the core carrier. When the magnetic components are stacked, the amount of magnetic cores that can be included per unit volume increases, thus improving magnetic power density and reducing the size of the magnetic integrated transformer with the same device configuration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the magnetic integrated transformer of this application;

[0016] Figure 2 This is a schematic diagram of the structure of an embodiment of the magnetic component of this application;

[0017] Figure 3 yes Figure 2 A schematic diagram of the magnetic component from another perspective;

[0018] Figure 4 This is a schematic diagram of another embodiment of the magnetic integrated transformer of this application;

[0019] Figure 5 This is a schematic diagram of the structure of another embodiment of the magnetic integrated transformer of this application;

[0020] Figure 6 This is a schematic diagram of the circuit topology of an embodiment of the magnetic integrated transformer of this application;

[0021] Figure 7 This is a schematic diagram of the structure of an embodiment of the charging system of this application;

[0022] Figure 8 This is a circuit topology diagram of an embodiment of the charging system of this application;

[0023] Figure 9 This is a schematic diagram of the timing switching edges of an embodiment of the charging process of the charging system of this application;

[0024] Figure 10 This is a schematic diagram of the timing switching edges of an embodiment of the discharge process of the charging system of this application;

[0025] Figure 11 This is a structural schematic diagram of an embodiment of the vehicle described in this application.

[0026] Explanation of reference numerals in the attached drawings: Magnetic integrated transformer 100; Magnetic component 10; Magnetic core support 101; Opening 1011; Receiving cavity 1012; Bottom of housing 1014; Supporting area 1015; Guide channel 1016; Magnetic core 102; Magnetic component 1020; First magnetic component 103; Second magnetic component 104; First magnetic assembly 11; Opening 111 of the first magnetic assembly; Magnetic core 112 of the first magnetic assembly; One magnetic core of the first magnetic assembly 1121; Another magnetic core of the first magnetic assembly 1122; Second magnetic... Component 12; Opening 121 of the second magnetic component; Core 122 of the second magnetic component; One core 1221 of the second magnetic component; Another core 1222 of the second magnetic component; Third magnetic component 13; Opening 131 of the third magnetic component; Third core 132; Fourth core 133; First winding 14; Second winding 15; First sub-winding 151; Second sub-winding 152; Third winding 16; Fourth winding 17; Fifth winding 18; Transformer primary side W1; Transformer first secondary side W2; First winding W 21; Second winding W22; Second secondary side of transformer W3; Third winding W31; Fourth winding W32; One end of coil D1; Connection terminal Con; Two ends of coil D2; First end D3; First tap D4; Second end D5; Three ends of coil D6, four ends of coil D7, five ends of coil D8; Second tap Do; Filter inductor FL; Resonant inductor Lr; First connection point H1; Second connection point H2; Third connection point H3; Fourth connection point H4; Fifth connection point H5; Extension direction R; Charging system 200; Primary side power Road module 21; First secondary side circuit module 22; Second secondary side circuit module 23; First switch Q1; Second switch Q2; Third switch Q3; Fourth switch Q4; Fifth switch Q5; Sixth switch Q6; Seventh switch Q7; Eighth switch Q8; Ninth switch Q9; Tenth switch Q10; Eleventh switch Q11; Twelfth switch Q12; First capacitor C1; Second capacitor C2; Third capacitor C3; Resonant capacitor Cr; DC blocking capacitor Cn; Vehicle body 300; Time t. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Where there is no conflict, the following embodiments and features can be combined with each other.

[0028] Please refer to the following: Figure 1 as well as Figure 2 , Figure 1This is a schematic diagram of the structure of an embodiment of the magnetic integrated transformer of this application. Figure 2 This is a schematic diagram of the structure of an embodiment of the magnetic component of this application.

[0029] In one embodiment, the magnetic integrated transformer 100 includes a plurality of magnetic components 10 stacked together. That is, the magnetic components 10 are the constituent units of the magnetic integrated transformer 100.

[0030] The magnetic component 10 may include a core carrier 101 and multiple cores 102. As the name suggests, the core carrier 101 is used to support the cores 102. In other words, the core carrier 101 is essentially a shell. As the basic carrier of the magnetic integrated transformer 100 and the magnetic component 10, the core carrier 101 can support and protect the various components of the magnetic component 10 and the magnetic integrated transformer 100, such as the cores 102.

[0031] The magnetic core carrier 101 can surround and form a plurality of receiving cavities 1012 with openings 1011, and the magnetic core 102 is disposed in the receiving cavity 1012.

[0032] That is, the number of accommodating cavities 1012 of the magnetic component 10 can be matched with the number of magnetic cores 102 that the magnetic component 10 can carry, so that each accommodating cavity 1012 can carry one magnetic core 102; or the number of accommodating cavities 1012 can be less than the number of magnetic cores 102, so that multiple magnetic cores 102 can be stacked or arranged in one accommodating cavity 1012, which is not limited here.

[0033] The accommodating cavity 1012 may have an opening 1011. The openings 1011 of adjacent magnetic components 10 are connected; or, the edge of the opening 1011 of a magnetic component 10 abuts against the core support 101 of its adjacent magnetic component 10. Figure 1 As illustrated in the example, the magnetic integrated transformer 100 may include two magnetic components 10, and the stacking of the two magnetic components 10 connects their openings 1011.

[0034] As can be seen, this embodiment deconstructs the traditional transformer skeleton structure and no longer develops and manufactures based on the transformer as the smallest unit, in order to solve the problem of difficulty in reducing the size of transformers or the equipment used in their integration. This embodiment employs a new unit design and magnetic component 10, which includes multiple accommodating cavities 1012, each used to accommodate a magnetic core 102, allowing a single magnetic component 10 to include multiple magnetic cores 102. Thus, by using multiple stackable magnetic components 10, it is beneficial to form a high-density integrated transformer, thereby increasing the magnetic power density. This allows for a reduction in the size of the magnetic integrated transformer 100 while maintaining consistent overall magnetic power requirements, thus increasing the component density of the magnetic integrated transformer 100. Simultaneously, the smaller size of the magnetic component 10 necessitates smaller production molds during actual assembly, enabling the production of the magnetic component 10 using smaller molds and further reducing costs.

[0035] Optionally, the magnetic core 102 can be of type PQ (planar quadrangular), type PC (power core), etc., and is not limited here. That is, multiple magnetic cores 102 carried in the same magnetic component 10 can be of the same type or multiple types. For example, a single magnetic component 10 can carry two magnetic cores 102, one of which is of type PQ and the other is of type PC, and is not limited here.

[0036] Of course, the magnetic core 102 can also be of type PE, EE, EP, UI, RM, etc., without limitation. Among them, PE, EE, EP, UI, and RM are relatively standard magnetic core types. For example, PE type indicates that the magnetic core is made of polyethylene, EE type indicates that the magnetic core shape resembles the English letter "EE", etc., which will not be elaborated further here.

[0037] Please refer to the following: Figure 3 , Figure 3 yes Figure 2 A schematic diagram of the magnetic component from another perspective.

[0038] In one embodiment, the core carrier 101 may include a housing bottom 1014 remote from the opening 1011.

[0039] Furthermore, the bottom 1014 of the housing may include a support area 1015 and a flow channel 1016. The support area 1015 is the area that specifically supports the magnetic core 102, that is, the magnetic core 102 is located in the support area 1015.

[0040] As its name suggests, the flow guide 1016 guides airflow, thus aiding in heat dissipation. In this embodiment, the flow guide 1016 connects the accommodating cavity 1012 to the outside of the accommodating cavity 1012. Specifically, the cross-sectional area of ​​the flow guide 1016 perpendicular to its extending direction R can increase in the direction away from the bearing area 1015. In layman's terms, the shape of the flow guide 1016 can be similar to a "V" (letter) shaped groove, thereby improving the heat dissipation effect of the magnetic component 10 and the magnetic integrated transformer 100.

[0041] Optionally, the number of flow channels 1016 can be at least one. Alternatively, the number of flow channels 1016 can be associated with the number of receiving cavities 1012 in the magnetic assembly 10, for example, each receiving cavity 1012 may include one or more flow channels 1016. Figure 3 As illustrated in the example, the bottom 1014 of the housing corresponding to each accommodating cavity 1012 may include two guide grooves 1016, and the two guide grooves 1016 may be arranged opposite to each other to further facilitate the flow of gas between the guide grooves 1016, thereby dissipating heat from the magnetic core 102.

[0042] The above provides an example illustrating the structure and working principle of a single magnetic component 10. The following describes the cooperative structure and working principle of multiple stacked magnetic components 10.

[0043] Please continue reading. Figure 1 In one embodiment, the plurality of stacked magnetic components 10 may include a first magnetic component 11 and a second magnetic component 12.

[0044] The first magnetic component 11 and the second magnetic component 12, which are stacked together, can be considered as the magnetic core of the main transformer, that is, they can be used as a relatively complete and independent geomagnetic integrated transformer 100.

[0045] The opening 111 of the first magnetic component 11 can be connected to the opening 121 of the second magnetic component 12.

[0046] The magnetic core 112 of the first magnetic component 11 can be exposed to the opening 111 of the first magnetic component 11, and the magnetic core 122 of the second magnetic component 12 can be exposed to the opening 121 of the second magnetic component 12, so that the magnetic core 112 of the first magnetic component 11 abuts against the magnetic core 122 of the second magnetic component 12 to form a magnetic element 1020.

[0047] In layman's terms, when the magnetic core 112 and the first magnetic element 103 of the first magnetic component 11 come into contact with the magnetic core 122 and the second magnetic element 104 of the second magnetic component 12, they can be considered as a single magnetic element 1020. Thus, taking the magnetic component 10 as an example where the number of magnetic cores 102 is two, the magnetic integrated transformer 100 may also include a first magnetic element 103 and a second magnetic element 104.

[0048] Specifically, the first magnetic component 103 may include a magnetic core 1121 of the first magnetic component 11 and a magnetic core 1221 of the second magnetic component 12 that abut against each other.

[0049] The second magnetic component 104 may include another magnetic core 1122 of the first magnetic component 11 and another magnetic core 1222 of the second magnetic component 12 that abut against each other.

[0050] Furthermore, to further enhance the integration of the magnetic integrated transformer 100, in this embodiment, in addition to including the main transformer core, the inductor-related skeleton structure can also be integrated into the magnetic integrated transformer 100. For details, please refer to... Figure 4 , Figure 4 This is a schematic diagram of another embodiment of the magnetic integrated transformer of this application.

[0051] In one embodiment, the plurality of stacked magnetic components 10 may further include a third magnetic component 13.

[0052] The edge of the opening 131 of the third magnetic component 13 abuts against the side of the second magnetic component 12 that is away from the first magnetic component 11.

[0053] Therefore, taking the example of magnetic component 10 including two magnetic cores 102, the third magnetic component 13 may include a third magnetic core 132 and a fourth magnetic core 133. Both the third magnetic core 132 and the fourth magnetic core 133 can abut against the second magnetic component 12 through the opening 131 of the third magnetic component 13. That is, the third magnetic component 13 may include the third magnetic core 132 and the fourth magnetic core 133 abutting against the second magnetic component 12. The third magnetic core 132 and the fourth magnetic core 133 can be used to wind inductance-related turns. Details will be elaborated later and will not be repeated here.

[0054] In an alternative embodiment (not shown in the figure), the structure of the third magnetic component 13 may not be based on the magnetic component 10. The magnetic core of the third magnetic component 13 may have both ends abutting against its own housing. That is, when the third magnetic component 13 is stacked with the first magnetic component 11 and the second magnetic component 12, the magnetic core of the third magnetic component 13 may not abut against the second magnetic component 12, which is not limited here.

[0055] The following provides an example illustrating the specific implementation of the assembly line turns of the magnetic integrated transformer 100 of this application.

[0056] Please refer to the following: Figures 4 to 6 , Figure 5 This is a schematic diagram of another embodiment of the magnetic integrated transformer of this application. Figure 6 This is a schematic diagram of the circuit topology of an embodiment of the magnetic integrated transformer of this application.

[0057] In one embodiment, as described above, the magnetic integrated transformer 100 may include a resonant inductor Lr and a filter inductor FL. The following section will first discuss... Figure 5 The matching of the existing coils with the components of the magnetic integrated transformer 100 is described.

[0058] Among them, the resonant inductor Lr is between the first end D1 of the coil and the connecting end Con; the primary side W1 of the transformer is between the connecting end Con and the second end D2 of the coil; the first secondary side W2 of the transformer is between the first end D3, the first tap D4, and the second end D5; the second secondary side W3 of the transformer is between the third end D6 of the coil and the fourth end D7 of the coil; the second tap Do is between the third end D6 of the coil and the fourth end D7 of the coil, and the filter inductor FL is between the second tap Do and the fifth end D8 of the coil.

[0059] Figure 5 The text provides examples of the arrangement of the first magnetic element 103, the second magnetic element 104, the third magnetic core 132, and the fourth magnetic core 133 in this embodiment, and also provides examples of the lead-out methods of the aforementioned wire turns. For example... Figure 5 As illustrated in the example, the relative directions of the first magnetic element 103 and the second magnetic element 104 can be parallel to the relative directions of the third magnetic core 132 and the fourth magnetic core 133; the relative directions of the first magnetic element 103 and the third magnetic core 132 can also be perpendicular to the relative directions of the first magnetic element 103 and the second magnetic element 104. Of course, Figure 5 The arrangement shown in the example is for illustrative purposes only and is not a strict limitation on the arrangement of the first magnetic component 103, the second magnetic component 104, the third magnetic core 132, and the fourth magnetic core 133. The following is a detailed description of the specific coils and other components included in the magnetic integrated transformer 100.

[0060] Please continue to refer to the following: Figures 4 to 6 In one embodiment, the magnetic integrated transformer 100 may include a first coil 14 and a second coil 15.

[0061] The first turn 14 is the primary side W1 of the transformer, and the second turn 15 is the first secondary side W2 of the transformer.

[0062] Furthermore, the second line turn 15 may include a first end D3, a first tap D4, and a first sub-line turn 151 between the two.

[0063] The first wire turn 14 and the first sub-wire turn 151 are wound in parallel on the first magnetic element 103, thereby reducing the amount of magnetic core used and increasing the magnetic power density.

[0064] Please continue reading. Figures 4 to 6 In one embodiment, the magnetic integrated transformer 100 may further include a third winding 16, which is the second secondary side W3 of the transformer.

[0065] As explained above, the second line turn 15 is the first secondary side W2 of the transformer.

[0066] In this embodiment, the second wire turn 15 may further include a first tap D4, a second end D5, and a second sub-wire turn 152 between the two.

[0067] The second sub-winding turn 152 and the third winding turn 16 are wound in parallel on the second magnetic element 104. Similarly, by using parallel winding, the amount of magnetic core used can be reduced, and the magnetic power density can be increased.

[0068] Furthermore, the third line turn 16 also includes the second tap Do of the second secondary side W3 of the transformer.

[0069] Please continue reading. Figures 4 to 6 In one embodiment, the magnetic integrated transformer 100 may further include a fourth turn 17.

[0070] The fourth turn 17 is a resonant inductor Lr, and it can be wound around the third magnetic core 132. Simultaneously, the fourth turn 17 can also be connected to the primary side W1 of the transformer, thus enabling the resonant inductor Lr to be connected to the main transformer.

[0071] Optionally, as explained above, if the first turn 14 is the primary side W1 of the transformer, then the first turn 14 and the fourth turn 17 can be continuous turns, and the boundary between the primary side W1 of the transformer and the resonant inductor Lr is the connection terminal Con.

[0072] Please continue reading. Figures 4 to 6 In one embodiment, the magnetic integrated transformer 100 may further include a fifth turn 18.

[0073] The fifth turn 18 is a filter inductor FL, and it can be wound around the fourth magnetic core 133. Simultaneously, the fifth turn 18 can also be connected to the second tap Do of the second secondary side W3 of the transformer.

[0074] Similarly, the fifth turn 18 and the third turn 16 can be continuous turns, or they can be two turns connected by the second tap Do.

[0075] at the same time, Figure 5The diagram also illustrates the magnetic flux of the integrated magnetic transformer 100 input from the two ends D2 of the line turns (e.g., Figure 5 (As indicated by the dashed arrow).

[0076] Please continue reading. Figure 6 In one embodiment, the first connection point H1 and the second connection point H2 are terminals with the same name. The first connection point H1 is the connection point between the resonant inductor Lr and the primary side W1 of the transformer; the second connection point H2 is the interface terminal (i.e., the first terminal D3) of the first sub-turn 151 of the first secondary side W2 of the transformer away from the second sub-turn 152.

[0077] The third connection point H3, the fourth connection point H4, and the fifth connection point H5 are the opposite-named terminals of the aforementioned terminals with the same name. Specifically, the third connection point H3 is the connection between the first tap D4 and the second sub-turn 152; the fourth connection point H4 is at the three-terminal D6 of the turn; and the fifth connection point H5 is the connection between the second tap Do and the filter inductor FL.

[0078] So, Figure 6 As can be seen from the diagram, the first secondary side W2 of the transformer may include a first winding W21 and a second winding W22. The second secondary side W3 of the transformer may include a third winding W31 and a fourth winding W32.

[0079] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of an embodiment of the charging system of this application.

[0080] In one embodiment, the charging system 200 may include a magnetic integrated transformer 100, a primary-side circuit module 21, a first secondary-side circuit module 22, and a second secondary-side circuit module 23.

[0081] The magnetic integrated transformer 100 can be as described in any of the above embodiments, and will not be described again here.

[0082] The primary circuit module 21, the first secondary circuit module 22, and the second secondary circuit module 23 are respectively connected to the magnetic integrated transformer 100.

[0083] Please refer to the following: Figure 7 as well as Figure 8 , Figure 8 This is a circuit topology diagram of an embodiment of the charging system of this application.

[0084] In one embodiment, the primary-side circuit module 21 may employ a bridge circuit.

[0085] Specifically, the primary circuit module 21 may include a first switch Q1, a second switch Q2, a third switch Q3, a fourth switch Q4, a first capacitor C1, and a resonant capacitor Cr.

[0086] Among them, the first switch Q1 and the fourth switch Q4 serve as the first bridge arm, and the second switch Q2 and the third switch Q3 serve as the second bridge arm.

[0087] The primary-side circuit module 21 is used to connect the input power supply. The input power supply can be, for example,... Figure 8 The examples shown are BUS+ and BUS-, where BUS is for data transmission and power supply for bus devices.

[0088] Therefore, the charging system 200 in this embodiment can be considered to integrate an on-board charger and a DC-DC converter.

[0089] Please continue to refer to the following: Figure 7 as well as Figure 8 In one embodiment, the first secondary circuit module 22 may be a three-phase full-bridge circuit.

[0090] Specifically, the first secondary circuit module 22 may include a fifth switch Q5, a sixth switch Q6, a seventh switch Q7, an eighth switch Q8, a ninth switch Q9, a tenth switch Q10, a DC blocking capacitor Cn, and a second capacitor C2.

[0091] Among them, the fifth switch Q5 and the eighth switch Q8 serve as the third bridge arm, the sixth switch Q6 and the ninth switch Q9 serve as the fourth bridge arm, and the seventh switch Q7 and the tenth switch Q10 serve as the fifth bridge arm.

[0092] The first secondary circuit module 22 can be used to connect to a first load and supply power to the first load through a first output power supply. The first output power supply is as follows: Figure 8 The examples shown are HV+ and HV-, where HV represents high voltage direct current.

[0093] Please continue to refer to the following: Figure 7 as well as Figure 8 In one embodiment, the second secondary circuit module 23 may employ a power switching circuit.

[0094] The second secondary circuit module 23 may include an eleventh switch Q11, a twelfth switch Q12, and a third capacitor C3. The eleventh switch Q11 represents the first power switch group; the twelfth switch Q12 represents the second power switch group.

[0095] The second secondary circuit module 23 can be used to connect a second load and supply power to the second load through a second output power supply. The second output power supply is as follows: Figure 8 The examples shown in the text illustrate LV+ and LV-, where LV represents low-voltage direct current.

[0096] Please refer to the following: Figure 6 as well as Figure 8In one embodiment, the corresponding terminal of the primary side W1 of the transformer is connected in series with a resonant inductor Cr, which can then be connected to the midpoint of the first bridge arm or the midpoint of the second switch Q2 and the third switch Q3 of the second bridge arm. The corresponding terminal of the primary side W1 is the winding end D1-connection terminal Con (i.e., the first connection point H1); the first bridge arm includes the first switch Q1 and the fourth switch Q4; the second bridge arm includes the second switch Q2 and the third switch Q3.

[0097] The corresponding terminal of the first winding W21, i.e., the second connection point H2, is connected to the midpoint of the third bridge arm. The third bridge arm includes the fifth switch Q5 and the eighth switch Q8.

[0098] The same-name terminal (first tap D4) of the second winding W22 is connected in series to the opposite-name terminal of the first winding W21, namely the third connection point H3.

[0099] A DC blocking capacitor Cn is connected to the first tap D4 of the first winding W21 and the second winding W22. The other end of the DC blocking capacitor Cn is connected to the midpoint of the fourth bridge arm. The fourth bridge arm includes a sixth switch Q6 and a ninth switch Q9.

[0100] The same-name terminal (i.e., the three terminals D6 of the wire turn) of the third winding W31 is connected to the twelfth switch Q12.

[0101] The opposite terminal (i.e., terminal D8 of the fifth winding) of the fourth winding W32 is connected to the eleventh switch Q11.

[0102] The same-name terminal of the fourth winding W32 (i.e., the four terminals of the coil D7-connection terminal Con) is connected in series to the opposite-name terminal of the third winding W31 (i.e., the four terminals of the coil D7-connection terminal Con).

[0103] The series connection point of the third winding W31 and the fourth winding W32 is connected to the filter inductor FL.

[0104] Please refer to the following: Figure 6 , Figure 8 as well as Figure 9 , Figure 9 This is a schematic diagram of the timing switch edges of an embodiment of the charging process of the charging system of this application.

[0105] like Figure 9 The example illustrates the conduction / off status of the first switch Q1 to the twelfth switch Q12 as time t changes when energy is transferred from the primary side W1 to the first secondary side W2 of the transformer. Figure 9 It can demonstrate the circuit operation as the driving timing changes during the charging process.

[0106] In other words, Figure 9This demonstrates that the first, second, third, and fourth bridge arms operate in DAB (Dual-Active Bridge) mode. When energy is supplied from the primary side W1 of the transformer to the first secondary side W2, the energy supply can be adjusted by lagging the phase angle of the upper arm switch of the third bridge arm behind that of the upper arm switch of the first bridge arm. The upper arm switch of the third bridge arm is the fifth switch Q5; the upper arm switch of the first bridge arm is the first switch Q1. Figure 9 The example shown is a case where the phase angle of the upper arm switch of the third bridge arm is the same as that of the upper arm switch of the first bridge arm.

[0107] Furthermore, the fifth switch Q5 and the ninth switch Q9 have the same drive signal, and the sixth switch Q6 and the eighth switch Q8 have the same drive signal.

[0108] Please refer to the following: Figure 6 , Figure 8 as well as Figure 10 , Figure 10 This is a schematic diagram of the timing switch edges of an embodiment of the discharge process of the charging system of this application.

[0109] like Figure 10 The example shown illustrates the on / off state of the first switch Q1 to the twelfth switch Q12 as time t changes during the discharge process of the charging system 200. Figure 10 It can demonstrate the circuit operation as the driving timing changes during the discharge process.

[0110] In other words, when the transformer's first secondary side W2 supplies energy to the transformer's primary side W1, the energy supply can be adjusted by controlling the phase angle of the upper arm switch of the first bridge arm to lag behind the phase angle of the upper arm switch of the third bridge arm. The upper arm switch of the first bridge arm is the first switching element Q1; the upper arm switch of the third bridge arm is the fifth switching element Q5.

[0111] When the fourth and fifth bridge arms operate in phase-shifted full-bridge mode, and the first secondary side W2 of the transformer supplies energy to the second secondary side W3 of the transformer, the energy supply can be adjusted by controlling the phase angle of the lower arm switch of the fifth bridge arm to lag behind the phase angle of the upper arm switch of the fourth bridge arm. The lower arm switch of the fifth bridge arm is the tenth switch element Q10, and the upper arm switch is the sixth switch element Q6.

[0112] Optionally, the eleventh switch Q11 serves as the first power switch group, and it can be turned on when the upper arm switch of the fourth bridge arm or the lower arm switch of the fifth bridge arm is turned on. The twelfth switch Q12 serves as the second power switch group, and it can be complementary to the eleventh switch Q11 in conducting, that is, the eleventh switch Q11 and the twelfth switch Q12 are complementary in conducting.

[0113] Please see Figure 11 , Figure 11 This is a structural schematic diagram of an embodiment of the vehicle described in this application.

[0114] In one embodiment, the vehicle may include a charging system 200.

[0115] The charging system 200 can be as described in any of the above embodiments, and will not be repeated here.

[0116] Furthermore, the vehicle may also include a vehicle body 300, and the charging system 200 may be located on the vehicle body 300.

[0117] The vehicle body 300 may include a battery device, a body structure, a voltage conversion device, etc.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A magnetic integrated transformer, characterized by, The magnetic integrated transformer includes: Multiple magnetic components (10) stacked together; The magnetic component (10) includes a magnetic core carrier (101) and a plurality of magnetic cores (102); The magnetic core support member (101) surrounds and forms a plurality of receiving cavities (1012) with openings (1011); the magnetic core (102) is disposed in the receiving cavity (1012); The openings (1011) of adjacent magnetic components (10) are connected; or, the edge of the opening (1011) of the magnetic component (10) abuts against the core carrier (101) of the adjacent magnetic component (10).

2. The magnetic integrated transformer of claim 1, wherein, The plurality of stacked magnetic components (10) include: A first magnetic component (11) and a second magnetic component (12), wherein the opening (111) of the first magnetic component (11) is connected to the opening (121) of the second magnetic component (12), and the magnetic core (112) of the first magnetic component (11) abuts against the magnetic core (122) of the second magnetic component (12) to form a magnetic element (1020).

3. The magnetic integrated transformer of claim 2, wherein, The magnetic component (1020) includes a first magnetic component (103); the magnetic integrated transformer also includes a first wire turn (14) and a second wire turn (15), the first wire turn (14) being the primary side (W1) of the transformer, and the second wire turn (15) being the first secondary side (W2) of the transformer; The second wire turn (15) includes a first end (D3), a first tap (D4), and a first sub-wire turn (151) between the two; The first wire turn (14) and the first sub-wire turn (151) are wound in parallel on the first magnetic element (103).

4. The magnetic integrated transformer of claim 3, wherein, The magnetic component (1020) further includes a second magnetic component (104); the magnetic integrated transformer further includes a third wire turn (16), the third wire turn (16) is the second secondary side (W3) of the transformer, and the third wire turn (16) includes the second tap (Do) of the second secondary side (W3) of the transformer; The second wire turn (15) includes a first tap (D4), a second end (D5), and a second sub-wire turn (152) between the two; The second sub-coil (152) and the third coil (16) are wound in parallel on the second magnetic element (104).

5. The magnetic integrated transformer of claim 2, wherein, The plurality of stacked magnetic components (10) also include: The third magnetic component (13) has an opening (131) edge that abuts against the side of the second magnetic component (12) away from the first magnetic component (11); the third magnetic component (13) includes a third magnetic core (132) and a fourth magnetic core (133) that abut against the second magnetic component (12).

6. The magnetic integrated transformer of claim 5, wherein, The magnetic integrated transformer also includes a fourth coil (17), which is a resonant inductor (Lr) and is wound around the third magnetic core (132); the fourth coil (17) is also used to connect to the primary side (W1) of the transformer.

7. The magnetic integrated transformer of claim 5, wherein, The magnetic integrated transformer also includes a fifth coil (18), which is a filter inductor (FL) and is wound around the fourth magnetic core (133); the fifth coil (18) is also used to connect to the second tap (Do) of the second secondary side (W3) of the transformer.

8. The magnetic integrated transformer of claim 1, wherein, The magnetic core support (101) includes a housing bottom (1014) away from the opening (1011); The bottom of the housing (1014) includes a bearing area (1015) and a flow guide groove (1016); the magnetic core (102) is disposed in the bearing area (1015); The cross-sectional area of ​​the guide channel (1016) perpendicular to its extension direction (R) increases in the direction away from the bearing area (1015); the guide channel (1016) is used to connect the accommodating cavity (1012) with the outside of the accommodating cavity (1012).

9. A charging system, characterized in that, The charging system includes: The magnetic integrated transformer (100) as described in any one of claims 1 to 8; The primary circuit module (21), the first secondary circuit module (22), and the second secondary circuit module (23) are respectively connected to the magnetic integrated transformer (100).

10. A vehicle, characterized in that, The vehicle includes the charging system (200) as described in claim 9.

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