Integrated charging and discharging module and charging and discharging device

Abstract

The utility model discloses an integrated charging and discharging module and a charging and discharging device, and relates to the technical field of battery charging and discharging, the module comprises a radiator, a DBC ceramic substrate is fixed on the radiator, a charging and discharging circuit is fixed on the DBC ceramic substrate, and the charging and discharging circuit is fixed on the DBC ceramic substrate. The DBC ceramic substrate is provided with an insulator which packages the charging and discharging circuit therein in a potting / plastic packaging mode. According to the scheme, the radiator, the charging and discharging circuit, the DBC ceramic substrate and the insulator are integrated into a whole in advance; the purposes of improving the production efficiency, reducing the product size, improving the shockproof and anti-collision capability, enhancing the water vapor / dust isolation capability, improving the reliability, improving the product quality and guaranteeing the final charging and discharging effect are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery charging and discharging technical field, concretely relates to a kind of integrated charging and discharging module and charging and discharging device. BACKGROUND

[0002] Battery is a kind of energy storage equipment that chemical energy is directly converted into electric energy, its working principle is: when charging, the internal active material is regenerated using external electric energy, and electric energy is stored as chemical energy, when discharging, chemical energy is converted into electric energy output again.Battery, as the most commonly used energy storage equipment today, is also more and more widely used in electric vehicles, aircraft, mobile phones, medical industry and other industries.

[0003] The use of battery cannot be separated from charging and discharging, and the charging and discharging of battery is usually realized by using rectifier circuit, frequency conversion circuit, inverter circuit, transformer and other related components, such as the patent documents with announcement number CN201918762U and CN203707860U, which disclose related charging and discharging devices.Although these charging and discharging devices have good charging and discharging effect, careful analysis shows that the circuits involved in the existing charging and discharging devices are separately arranged, and need to be separately assembled and installed on the radiator in actual application, resulting in the technical problems of low production efficiency, large product size, poor shock and collision resistance, poor water vapor / dust isolation ability, poor reliability, easy quality problems and influence on final charging and discharging effect.

[0004] Therefore, it is necessary to provide an integrated charging module to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model provides an integrated charging and discharging module and charging and discharging device to overcome the above technical problems in the prior art, and the radiator, charging and discharging circuit, DBC ceramic substrate and insulator are integrated as a whole in advance, which improves production efficiency, reduces product size, improves shock and collision resistance, enhances water vapor / dust isolation ability, improves reliability, improves product quality and ensures the final charging and discharging effect compared with the existing separately assembled charging and discharging device.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An integrated charging and discharging module includes a radiator, the radiator is fixed with a DBC ceramic substrate, the DBC ceramic substrate is fixed with a charging and discharging circuit, and the DBC ceramic substrate is provided with an insulator for packaging the charging and discharging circuit by pouring / sealing.

[0008] The charge-discharge circuit comprises a rectifier-inverter circuit, a frequency conversion circuit and a high-frequency inverter circuit connected in sequence, the rectifier-inverter circuit is used for converting low-frequency alternating current into low-frequency direct current output when the battery is charging, or converting high-frequency direct current into low-frequency alternating current output when the battery is discharging; the frequency conversion circuit is used for converting low-frequency direct current into high-frequency direct current output when the battery is charging; the high-frequency inverter circuit is used for converting high-frequency direct current into high-frequency alternating current output when the battery is charging, or converting high-frequency alternating current into high-frequency direct current output when the battery is discharging.

[0009] The charge-discharge circuit comprises a high-frequency rectifier-inverter circuit, which is used for converting high-frequency alternating current into high-frequency direct current output when the battery is charging, or converting high-frequency direct current into high-frequency alternating current output when the battery is discharging.

[0010] The heat sink has a mounting plane, a copper connecting layer is fixed on the mounting plane, the lower surface of the DBC ceramic substrate is welded on the copper connecting layer of the heat sink, and the charge-discharge circuit is located on the upper surface of the DBC ceramic substrate.

[0011] The side between the upper and lower surfaces of the DBC ceramic substrate is wrapped by an insulator.

[0012] A charge-discharge device comprises a first integrated charge-discharge module, a second integrated charge-discharge module and a transformer; wherein,

[0013] The first integrated charge-discharge module comprises a first heat sink, a first DBC ceramic substrate is fixed on the first heat sink, a rectifier-inverter circuit, a frequency conversion circuit and a high-frequency inverter circuit connected in sequence are fixed on the first DBC ceramic substrate, and a first insulator encapsulating the rectifier-inverter circuit, the frequency conversion circuit and the high-frequency inverter circuit is arranged on the first DBC ceramic substrate by means of pouring / plastic packaging;

[0014] The second integrated charge-discharge module comprises a second heat sink, a second DBC ceramic substrate is fixed on the second heat sink, a high-frequency rectifier-inverter circuit is fixed on the second DBC ceramic substrate, and a second insulator encapsulating the high-frequency rectifier-inverter circuit is arranged on the second DBC ceramic substrate by means of pouring / plastic packaging;

[0015] The transformer is connected between the high-frequency inverter circuit and the high-frequency rectifier-inverter circuit.

[0016] The first heat sink and the second heat sink each have a mounting plane, and a copper connecting layer is fixed on the mounting plane; the lower surface of the first DBC ceramic substrate is welded to the copper connecting layer of the first heat sink, and the rectifier-inverter circuit, the frequency conversion circuit and the high-frequency inverter circuit are located on the upper surface of the first DBC ceramic substrate; the lower surface of the second DBC ceramic substrate is welded to the copper connecting layer of the second heat sink, and the high-frequency rectifier-inverter circuit is located on the upper surface of the second DBC ceramic substrate.

[0017] The side edges between the upper and lower surfaces of the first DBC ceramic substrate are wrapped by the first insulator.

[0018] The side edges between the upper and lower surfaces of the second DBC ceramic substrate are wrapped by the second insulator.

[0019] The utility model has the advantages that:

[0020] 1, the key innovation point of the utility model lies in that the heat sink, the charge-discharge circuit, the DBC ceramic substrate and the insulator are integrated into a whole in advance, the upper and lower surfaces of the DBC ceramic substrate are provided with copper foils, and the copper foil on the upper surface is designed as a functional circuit for mounting the charge-discharge circuit.

[0021] 2, the utility model designs the side edges between the upper and lower surfaces of the DBC ceramic substrate to be wrapped by the insulator, so that the DBC ceramic substrate and the charge-discharge circuit are wrapped in the insulator, which is beneficial to improving the shock resistance and collision resistance of the product and enhancing the water vapor / dust isolation capacity. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view of the cross section of the embodiment 1.

[0023] Figure 2 It is a left view of the cross section of the embodiment 1.

[0024] Figure 3 It is a three-dimensional structure schematic view of the embodiment 1.

[0025] Figure 4 This is a cross-sectional view of Example 2;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of Example 2;

[0027] Figure 6 This is a three-dimensional structural diagram of Example 3;

[0028] Figure 7 This is a cross-sectional view of the first integrated charging and discharging module in Example 3;

[0029] Figure 8 This is a cross-sectional view of the second integrated charge and discharge module in Example 3;

[0030] Figure 9 This is the circuit schematic diagram of this utility model.

[0031] The following are labeled in the diagram: 1. Heat sink, 2. DBC ceramic substrate, 3. Charging and discharging circuit, 4. Rectifier-inverter circuit, 5. Frequency converter circuit, 6. High-frequency inverter circuit, 7. High-frequency rectifier-inverter circuit, 8. Insulator, 9. First integrated charging and discharging module, 10. Second integrated charging and discharging module, 11. Transformer, 12. First heat sink, 13. First DBC ceramic substrate, 14. First insulator, 15. Second heat sink, 16. Second DBC ceramic substrate, 17. Second insulator, 18. Battery, 19. Pin. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] Example 1

[0034] like Figures 1-3 As shown, this embodiment provides an integrated charging and discharging module. The module includes a heat sink 1, on which a DBC ceramic substrate 2 is fixed. The upper and lower surfaces of the DBC ceramic substrate 2 have built-in copper foil, with the upper surface copper foil designed as functional circuitry. Crucially, a charging and discharging circuit 3 is fixed on the DBC ceramic substrate 2, and an epoxy resin insulator 8 encapsulates the charging and discharging circuit 3 on the DBC ceramic substrate 2 through potting / molding. This embodiment, by integrating the heat sink 1, DBC ceramic substrate 2, charging and discharging circuit 3, and insulator 8 into a single integrated module, offers advantages such as improved production efficiency, reduced product size, enhanced shock and impact resistance, improved moisture / dust isolation, increased reliability, improved product quality, and guaranteed final charging and discharging performance.

[0035] According to a preferred embodiment of the present embodiment, the charging and discharging circuit 3 comprises a rectifier-inverter circuit 4, a frequency conversion circuit 5 and a high-frequency inverter circuit 6 connected in sequence. The rectifier-inverter circuit 4 is used to convert low-frequency alternating current into low-frequency direct current when charging the battery 18, or convert high-frequency direct current into low-frequency alternating current when discharging the battery 18. The frequency conversion circuit 5 is used to convert low-frequency direct current into high-frequency direct current when charging the battery 18. The high-frequency inverter circuit 6 is used to convert high-frequency direct current into high-frequency alternating current when charging the battery 18, or convert high-frequency alternating current into high-frequency direct current when discharging the battery 18.

[0036] According to a further preferred embodiment of the present embodiment, the heat sink 1 can adopt a finned heat sink structure, one side of which is provided with heat dissipation fins, and the other side is provided with a mounting plane, on which a copper connecting layer (not shown in the figure) is fixed, the lower surface of the DBC ceramic substrate 2 is welded on the copper connecting layer of the heat sink 1, and the charging and discharging circuit 3 is located on the upper surface of the DBC ceramic substrate 2.

[0037] As can be understood by those skilled in the art, the heat sink 1 can be a metal aluminum heat sink 1 or a ceramic heat sink 1, and the copper connecting layer can be a copper plating layer coated on the mounting plane or a copper plate fixed on the mounting plane by screws.

[0038] According to a further preferred embodiment of the present embodiment, the side edges between the upper and lower surfaces of the DBC ceramic substrate 2 are wrapped by an insulator 8, and the overall area of the lower surface of the DBC ceramic substrate 2 after being wrapped by the insulator 8 can be the same as or different from the area of the mounting plane of the heat sink 1. By wrapping the DBC ceramic substrate 2 and the charging and discharging circuit 3 in the insulator 8, the shock and collision resistance of the product can be improved, and the water vapor / dust isolation capability can be enhanced.

[0039] The rectifier-inverter circuit 4, the frequency conversion circuit 5 and the high-frequency inverter circuit 6 in the present embodiment are all conventional circuits, Figure 9 A circuit principle diagram of the present embodiment is shown when the battery 18 is charged and discharged in combination with the transformer 11 and the high-frequency rectifier-inverter circuit 7, and the left part of the diagram shows the circuit principle diagram of the rectifier-inverter circuit 4, the frequency conversion circuit 5 and the high-frequency inverter circuit 6. Specifically, the rectifier-inverter circuit 4 comprises four IGBT single tube chips, namely Q55 chip, Q53 chip, Q61 chip and Q62 chip. The frequency conversion circuit 5 comprises one IGBT single tube chip Q29, one FRD single tube chip D8 and an inductor L1. The high-frequency inverter circuit 6 comprises four IGBT single tube chips, namely Q31 chip, Q33 chip, Q35 chip and Q37 chip. It should be noted that the pins 19 of the aforementioned chips all extend out of the insulator 8.

[0040] The present embodiment will be further described in combination with the accompanying Figure 9The charging and discharging principle of the embodiment in actual use is described as follows:

[0041] A. Battery 18 charging process

[0042] A1. The external alternating current is input to the rectifier inverter circuit 4 through the interface VL4 and VN3, and the rectifier inverter circuit 4 rectifies through the Q55 chip, the Q53 chip, the Q61 chip and the Q62 chip to convert the low-frequency alternating current into low-frequency direct current and output to the frequency conversion circuit 5.

[0043] A2. The frequency conversion circuit 5 converts the low-frequency direct current into high-frequency direct current through the Q29 chip, the inductor L1 and the FRD single tube chip D8 and outputs to the high-frequency inverter circuit 6.

[0044] A3. The high-frequency inverter circuit 6 converts the high-frequency direct current into high-frequency alternating current through the Q31 chip, the Q33 chip, the Q35 chip and the Q37 chip and outputs to the transformer 11.

[0045] A4. After the transformer 11 steps down the high-frequency alternating current, the high-frequency rectifier inverter circuit 7 converts the stepped-down high-frequency alternating current into high-frequency direct current to charge the battery 18, thereby realizing the charging of the battery 18.

[0046] B. Battery 18 discharging process

[0047] B1. The battery 18 outputs high-frequency direct current, and the high-frequency rectifier inverter circuit 7 inverts the high-frequency direct current into high-frequency alternating current and outputs to the transformer 11.

[0048] B2. After the transformer 11 steps up the high-frequency alternating current, the Q31 chip, the Q33 chip, the Q35 chip and the Q37 chip of the high-frequency inverter circuit 6 invert the stepped-up high-frequency alternating current into high-frequency direct current and output to the rectifier inverter circuit 4.

[0049] B3. The rectifier inverter circuit 4 converts the high-frequency direct current into low-frequency alternating current output through the Q55 chip, the Q53 chip, the Q61 chip and the Q62 chip, thereby realizing the discharging of the battery 18.

[0050] After adopting the integrated structure of the embodiment, only one welding and fixing of the DBC ceramic substrate 2 and the heat sink 1 is needed, and each circuit does not need to be welded and fixed on different heat sinks 1. According to tests, compared with the existing split type and separately installed charging and discharging structure, the module can achieve the following performances:

[0051] 1. The volume of the function module can be saved by more than 30%.

[0052] 2. The cost of the area function module is reduced by not less than 20%.

[0053] Embodiment 2

[0054] As shown in Figures 4-5 The embodiment provides an integrated charging and discharging module, which comprises a heat sink 1, and a DBC ceramic substrate 2 fixed on the heat sink 1. The DBC ceramic substrate 2 is fixed with a charging and discharging circuit 3, and the DBC ceramic substrate 2 is fixed with an epoxy insulator 8 encapsulating the charging and discharging circuit 3 by means of pouring / plastic packaging. The embodiment integrates the heat sink 1, the DBC ceramic substrate 2, the charging and discharging circuit 3 and the insulator 8 into an integrated module, which has the advantages of improving production efficiency, reducing product size, improving anti-shock and anti-collision capability, enhancing water vapor / dust isolation capability, improving reliability, improving product quality and guaranteeing the final charging and discharging effect.

[0055] According to a preferred embodiment of the embodiment, the charging and discharging circuit 3 comprises a high-frequency rectification inverter circuit 7, which is used for converting high-frequency alternating current into high-frequency direct current output when the battery 18 is charged, or is used for inverting high-frequency direct current into high-frequency alternating current output when the battery 18 is discharged.

[0056] According to another preferred embodiment of the embodiment, the heat sink 1 can adopt a fin heat dissipation structure, one side of which has heat dissipation fins, and the other side has a mounting plane, on which a copper connecting layer (not shown in the figure) is fixed, the lower surface of the DBC ceramic substrate 2 is welded on the copper connecting layer of the heat sink 1, and the charging and discharging circuit 3 is located on the upper surface of the DBC ceramic substrate 2.

[0057] As understood by those skilled in the art, the heat sink 1 can be a metal aluminum heat sink 1 or a ceramic heat sink 1, and the copper connecting layer can be a copper plating layer coated on the mounting plane or a copper plate fixed on the mounting plane by screws.

[0058] According to another preferred embodiment of the embodiment, the side edges between the upper and lower surfaces of the DBC ceramic substrate 2 are wrapped by the insulator 8, and the overall area of the lower surface of the DBC ceramic substrate 2 after being wrapped by the insulator 8 can be the same as or different from the area of the mounting plane of the heat sink 1.

[0059] By wrapping the DBC ceramic substrate 2 and the charging and discharging circuit 3 in the insulator 8, the anti-shock and anti-collision capability of the product can be improved, and the water vapor / dust isolation capability can be enhanced.

[0060] The high-frequency rectification inverter circuit 7 in the embodiment is a conventional circuit, Figure 9The embodiment shows a circuit schematic diagram of the battery 18 charging and discharging in combination with the existing rectifier inverter circuit 4, frequency conversion circuit 5, high-frequency inverter circuit 6 and transformer 11. The right part shows the circuit schematic diagram of the high-frequency rectifier inverter circuit 7. Specifically, the high-frequency rectifier inverter circuit 7 includes four mosfet single-chip, namely Q5 chip, Q24 chip, Q10 chip and Q19 chip. It should be noted that the pin 19 of each chip extends out of the insulator 8.

[0061] On the basis of the embodiment 1, the present embodiment will be described in combination with the attached Figure 9 The charging and discharging principle of the embodiment in actual use will be described as follows:

[0062] A. Battery 18 charging process

[0063] A1. The external alternating current is input to the rectifier inverter circuit 4 through the interface VL4 and VN3. The rectifier inverter circuit 4 rectifies through the Q55 chip, Q53 chip, Q61 chip and Q62 chip, converts the low-frequency alternating current into low-frequency direct current and outputs to the frequency conversion circuit 5.

[0064] A2. The frequency conversion circuit 5 converts the low-frequency direct current into high-frequency direct current through the Q29 chip, inductor L1 and FRD single-chip D8 and outputs to the high-frequency inverter circuit 6.

[0065] A3. The high-frequency inverter circuit 6 converts the high-frequency direct current into high-frequency alternating current through the Q31 chip, Q33 chip, Q35 chip and Q37 chip and outputs to the transformer 11.

[0066] A4. After the transformer 11 steps down the high-frequency alternating current, the high-frequency rectifier inverter circuit 7 converts the stepped-down high-frequency alternating current into high-frequency direct current through the Q5 chip, Q24 chip, Q10 chip and Q19 chip and inputs into the battery 18, thereby realizing the charging of the battery 18.

[0067] B. Battery 18 discharging process

[0068] B1. The battery 18 outputs high-frequency direct current. The high-frequency rectifier inverter circuit 7 converts the high-frequency direct current into high-frequency alternating current through the Q5 chip, Q24 chip, Q10 chip and Q19 chip and outputs to the transformer 11.

[0069] B2. After the transformer 11 steps up the high-frequency alternating current, the high-frequency inverter circuit 6 converts the stepped-up high-frequency alternating current into high-frequency direct current through the Q31 chip, Q33 chip, Q35 chip and Q37 chip and outputs to the rectifier inverter circuit 4.

[0070] B3. The rectifier-inverter circuit 4 converts the high-frequency direct current into low-frequency alternating current output through the Q55 chip, the Q53 chip, the Q61 chip and the Q62 chip, so as to realize the discharging of the battery 18.

[0071] After the integrated structure is adopted in this embodiment, only once welding and fixing of the DBC ceramic substrate 2 and the heat sink 1 is needed, and the same performance as that of embodiment 1 can be achieved through testing.

[0072] Embodiment 3

[0073] As shown in Figure 6 , the embodiment provides a charging and discharging device, which comprises a first integrated charging and discharging module 9, a second integrated charging and discharging module 10 and a transformer 11; wherein,

[0074] As shown in Figure 7 , the first integrated charging and discharging module 9 comprises a first heat sink 12, and the first DBC ceramic substrate 13 is fixed on the first heat sink 12. Crucially, the first DBC ceramic substrate 13 is fixed with the rectifier-inverter circuit 4, the frequency conversion circuit 5 and the high-frequency inverter circuit 6 connected in sequence, and the first DBC ceramic substrate 13 is fixed with the first insulator 14 which encapsulates the rectifier-inverter circuit 4, the frequency conversion circuit 5 and the high-frequency inverter circuit 6 through the pouring / plastic sealing mode.

[0075] As shown in Figure 8 , the second integrated charging and discharging module 10 comprises a second heat sink 15, and the second DBC ceramic substrate 16 is fixed on the second heat sink 15. Crucially, the second DBC ceramic substrate 16 is fixed with the high-frequency rectifier-inverter circuit 7, and the second DBC ceramic substrate 16 is fixed with the second insulator 17 which encapsulates the high-frequency rectifier-inverter circuit 7 through the pouring / plastic sealing mode.

[0076] The transformer 11 is connected between the high-frequency inverter circuit 6 and the high-frequency rectifier-inverter circuit 7.

[0077] The charging and discharging device is connected with the battery 18 through the high-frequency rectifier-inverter circuit 7 on the second integrated charging and discharging module 10.

[0078] Specifically, the functions of each component in the charging and discharging are as follows:

[0079] The rectifier-inverter circuit 4 is used for converting low-frequency alternating current into high-frequency direct current output when the battery 18 is charging, or converting high-frequency direct current into low-frequency alternating current output when the battery 18 is discharging.

[0080] The frequency conversion circuit 5 is used for converting low-frequency direct current into high-frequency direct current output when the battery 18 is charging.

[0081] The high-frequency inverter circuit 6 is used for converting high-frequency direct current into high-frequency alternating current when charging the battery 18, or is used for inverting high-frequency alternating current into high-frequency direct current when discharging the battery 18.

[0082] The transformer 11 is used for stepping down the high-frequency alternating current output by the high-frequency inverter circuit 6 when charging the battery 18, or is used for stepping up the high-frequency alternating current output by the high-frequency rectifier inverter circuit 7 when discharging the battery 18.

[0083] The high-frequency rectifier inverter circuit 7 is used for converting high-frequency alternating current into high-frequency direct current when charging the battery 18, or is used for inverting high-frequency direct current into high-frequency alternating current when discharging the battery 18.

[0084] According to a preferred embodiment of the present embodiment, the first heat sink 12 and the second heat sink 15 each have a mounting plane, and a copper connecting layer (not shown in the figure) is fixed on the mounting plane; the lower surface of the first DBC ceramic substrate 13 is welded to the copper connecting layer of the first heat sink 12, and the rectifier inverter circuit 4, the frequency conversion circuit 5 and the high-frequency inverter circuit 6 are located on the upper surface of the first DBC ceramic substrate 13; the lower surface of the second DBC ceramic substrate 16 is welded to the copper connecting layer of the second heat sink 15, and the high-frequency rectifier inverter circuit 7 is located on the upper surface of the second DBC ceramic substrate 16.

[0085] According to another preferred embodiment of the present embodiment, the side edges between the upper and lower surfaces of the first DBC ceramic substrate 13 are wrapped by the first insulator 14, and the side edges between the upper and lower surfaces of the second DBC ceramic substrate 16 are wrapped by the second insulator 17.

[0086] In detail, the first integrated charging and discharging module 9 and the second integrated charging and discharging module 10 in the present embodiment each adopts the same technical means as the integrated charging and discharging modules in Embodiments 1 and 2 when in use, and can produce the same technical effects, which will not be described here again.

[0087] Figure 9 A circuit principle diagram when the battery 18 is charged and discharged according to the present embodiment is shown, and the specific charging and discharging process can refer to Embodiments 1 and 2, which will not be described here again.

[0088] The present embodiment adopts the integrated structure of Embodiments 1 and 2, and tests show that the same performance as described in Embodiment 1 can be achieved.

[0089] The above description is only a specific implementation of the present application, and any feature disclosed in the specification can be replaced by other equivalent or similar purpose replacement features, unless specifically described; all features disclosed, or steps in all methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. An integrated charge and discharge module comprising a heat sink (1), characterized in that: The heat sink (1) is fixed with a DBC ceramic substrate (2), the DBC ceramic substrate (2) is fixed with a charge-discharge circuit (3), and the DBC ceramic substrate (2) is provided with an insulator (8) encapsulating the charge-discharge circuit (3) by means of pouring / plastic packaging.

2. The integrated charging and discharging module of claim 1, wherein: The charge-discharge circuit (3) comprises a rectifier-inverter circuit (4), a frequency conversion circuit (5) and a high-frequency inverter circuit (6) connected in sequence, the rectifier-inverter circuit (4) is used for converting low-frequency alternating current into low-frequency direct current output when the battery is charging, or converting high-frequency direct current into low-frequency alternating current output when the battery is discharging; the frequency conversion circuit (5) is used for converting low-frequency direct current into high-frequency direct current output when the battery is charging; the high-frequency inverter circuit (6) is used for converting high-frequency alternating current into high-frequency direct current output when the battery is charging, or converting high-frequency alternating current into high-frequency direct current output when the battery is discharging.

3. The integrated charging and discharging module of claim 1, wherein: The charge-discharge circuit (3) comprises a high-frequency rectifier-inverter circuit (7), which is used for converting high-frequency alternating current into high-frequency direct current output when the battery is charging, or converting high-frequency direct current into high-frequency alternating current output when the battery is discharging.

4. The integrated charging and discharging module of any one of claims 1-3, wherein: The heat sink (1) has a mounting plane, the copper connecting layer is fixed on the mounting plane, the lower surface of the DBC ceramic substrate (2) is welded on the copper connecting layer of the heat sink (1), and the charge-discharge circuit (3) is located on the upper surface of the DBC ceramic substrate (2).

5. The integrated charging and discharging module of claim 1, wherein: The side between the upper and lower surfaces of the DBC ceramic substrate (2) is wrapped by the insulator (8).

6. A charge and discharge device characterized by comprising: It comprises a first integrated charge-discharge module (9), a second integrated charge-discharge module (10) and a transformer (11); wherein, The first integrated charge-discharge module (9) comprises a first heat sink (12), a first DBC ceramic substrate (13) is fixed on the first heat sink (12), a rectifier-inverter circuit (4), a frequency conversion circuit (5) and a high-frequency inverter circuit (6) connected in sequence are fixed on the first DBC ceramic substrate (13), and a first insulator (14) encapsulating the rectifier-inverter circuit (4), the frequency conversion circuit (5) and the high-frequency inverter circuit (6) is arranged on the first DBC ceramic substrate (13) by means of pouring / plastic packaging; The second integrated charge-discharge module (10) comprises a second heat sink (15), a second DBC ceramic substrate (16) is fixed on the second heat sink (15), a high-frequency rectifier-inverter circuit (7) is fixed on the second DBC ceramic substrate (16), and a second insulator (17) encapsulating the high-frequency rectifier-inverter circuit (7) is arranged on the second DBC ceramic substrate (16) by means of pouring / plastic packaging; The transformer (11) is connected between the high-frequency inverter circuit (6) and the high-frequency rectifier-inverter circuit (7).

7. The charging and discharging device according to claim 6, wherein: The first heat sink (12) and the second heat sink (15) each have a mounting plane, and a copper connecting layer is fixed on the mounting plane; the lower surface of the first DBC ceramic substrate (13) is welded on the copper connecting layer of the first heat sink (12), and the rectifier-inverter circuit (4), the frequency conversion circuit (5) and the high-frequency inverter circuit (6) are located on the upper surface of the first DBC ceramic substrate (13); the lower surface of the second DBC ceramic substrate (16) is welded on the copper connecting layer of the second heat sink (15), and the high-frequency rectifier-inverter circuit (7) is located on the upper surface of the second DBC ceramic substrate (16).

8. The charging and discharging device according to claim 6, wherein: The side edges between the upper and lower surfaces of the first DBC ceramic substrate (13) are wrapped by the first insulator (14).

9. The charging and discharging device according to claim 6, wherein: The side edges between the upper and lower surfaces of the second DBC ceramic substrate (16) are wrapped by the second insulator (17).

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