Two-way output conversion device, power assembly device and vehicle

Abstract

The utility model discloses a two-way output conversion device, a power assembly device and a vehicle. The two-way output conversion device comprises a converter module and an energy storage module, wherein the converter module comprises a plurality of DC-DC converters which are sequentially connected in series; the converter module comprises a plurality of ports, the converter module outputs voltage through two of the ports, at least one DC-DC converter is connected between the two ports, the converter module outputs voltage through different ports and supplies power to the first energy storage module and / or the second energy storage module, the flexibility is higher, the operability is higher, different load requirements can be met, and the converter module can be widely applied to the field of power supplies. The whole vehicle cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle charging, and in particular to a dual-path output conversion device, a power assembly device and a vehicle. Background Art

[0002] At present, in the application of new energy vehicles, the energy of the battery system is uneven, and some battery packs cannot achieve energy exchange and cannot meet multiple load requirements. Therefore, it is urgent to solve the problem that the charging circuit of the traditional conversion device cannot be compatible with multiple outputs to adapt to different application scenarios. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the invention of this application is to provide a dual-output conversion device, a powertrain device and a vehicle, so as to realize the coexistence of different output conversion systems in the whole vehicle, reduce costs and meet more user needs.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a dual-output conversion device, comprising: a converter module, wherein the converter module comprises a plurality of DC-DC converters connected in series in sequence; the converter module comprises a plurality of ports to charge an energy storage module, the converter module outputs voltage through two of the ports, and at least one DC-DC converter is connected between the two ports.

[0005] Optionally, the plurality of ports include a first port and a second port, and the converter module outputs a voltage through the first port and / or the second port.

[0006] Optionally, part of the DC-DC converters are electrically connected to the first port to output a voltage or are electrically connected to the second port to output a voltage.

[0007] Optionally, the converter module includes two DC-DC converters connected in series, wherein one of the DC-DC converters is connected between the first port and the second port, and one end of the other DC-DC converter is connected to the first port and the other end is grounded.

[0008] Optionally, the energy storage module includes a first energy storage module and a second energy storage module, the first energy storage module is electrically connected to the first port, and the second energy storage module is electrically connected to the second port.

[0009] Optionally, the energy storage module is also used to electrically connect to a load module to charge the load module, the load module is connected between the first energy storage and the second energy storage, or the load is connected across the first energy storage or the second energy storage.

[0010] Optionally, one pole of part of the DC-DC converter is grounded.

[0011] Optionally, a powertrain device includes the above-mentioned dual-output conversion device.

[0012] Optionally, a powertrain device further includes a third energy storage module, and the converter module is further used to be electrically connected to the third energy storage module to receive a voltage provided by the third energy storage module.

[0013] Optionally, a vehicle comprises the above-mentioned dual-output conversion device and a powertrain.

[0014] By adopting the above scheme, the beneficial effects of the utility model are:

[0015] The converter module includes a plurality of DC-DC converters connected in series, and the converter module also includes a plurality of ports. The converter module outputs voltages through different ports to supply power to the first energy storage module and / or the second energy storage module, which has higher flexibility and greater operability to meet different load requirements and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the circuit system framework of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the first loop state framework of the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a second loop state framework of an embodiment of the utility model;

[0020] Description of reference numerals:

[0021] 1. The third energy storage module; 2. The converter module; 21. The first DC-DC converter; 22. The second DC-DC converter; 23. The first port; 24. The second port; 3. The energy storage module; 31. The first energy storage module; 32. The second energy storage module; 4. The load module; 41. The first load module; 42. The second load module. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be understood that the utility model can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0024] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. On the contrary, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0025] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0026] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms "a", "an" and " / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0027] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0028] like Figure 1 As shown, the converter module 2 includes a plurality of DC-DC converters connected in series in sequence; the converter module 2 includes a plurality of ports to charge the energy storage module 3, the converter module 2 outputs voltage through two of the ports, and at least one DC-DC converter is connected between the two ports.

[0029] Preferably, the plurality of ports include a first port 23 and a second port 24 , and the converter module 2 outputs a voltage through the first port 23 and / or the second port 24 . More specifically, the voltages output through the first port 23 and / or the second port 24 are different.

[0030] Preferably, the converter module 2 includes two DC-DC converters connected in series, wherein one DC-DC converter is connected between the first port 23 and the second port 24, and the other DC-DC converter has one end connected to the first port 23 and the other end grounded.

[0031] Preferably, the energy storage module 3 includes a first energy storage module 31 and a second energy storage module 32 , the first energy storage module 31 is electrically connected to the first port 23 , and the second energy storage module 32 is electrically connected to the second port 24 .

[0032] Preferably, the energy storage module 3 is also used to electrically connect to the load module 4. The energy storage module 3 is used to charge the load module 4. The load module 4 is connected between the first energy storage 31 and the second energy storage 32, or the load module 4 is connected to both ends of the first energy storage 31 or the second energy storage 32. More specifically, the load module 4 includes a first load module 41 and a second load module 42. The first load module 41 and the second load module 42 can be connected in series or in parallel to meet different actual needs. The first load module 41 and the second load module 42 can choose to use the same or different resistance values.

[0033] The first load module 41 is electrically connected between the first energy storage module 31 and the second energy storage module 32, and one end of the second load 42 is electrically connected to both ends of the first energy storage module 31 or the second energy storage module 32 to receive different voltages provided by the energy storage module 3 to meet the requirements of different load modules 3 and reduce the cost of the entire vehicle.

[0034] Preferably, one pole of some DC-DC converters is grounded.

[0035] More specifically, the converter module 2 includes a first DC-DC converter 21 and a second DC-DC converter 22. The first DC-DC converter 21 and the second DC-DC converter 22 are connected end to end. The first DC-DC converter 21 is electrically connected to a first port 23. The electrical connection point between the first DC-DC converter 21 and the second DC-DC converter 22 is electrically connected to a second port 24. The converter module 2 outputs different voltages through the first port 23 and the second port 24.

[0036] The energy storage module 3 is electrically connected to the converter module 2, and the converter module 2 can be externally connected to a switch, such as a relay, a contactor, or a fork, to control the on and off of the energy storage module 3 and the converter module 2. The first energy storage module 31 is electrically connected to the first port 23, the first energy storage module 31 and the second energy storage module 32 are electrically connected to the second port 24, the first load module 41 is electrically connected to the first port 23, and the second load module 42 is electrically connected to the second port 24.

[0037] The first circuit state of the embodiment of the utility model is as follows: Figure 2 As shown, in the technical solution, a converter module 2 and an energy storage module 3 are connected to the circuit. The converter module 2 is externally connected to a voltage source to provide voltage for the converter module 2. The converter module 2 includes a second DC-DC converter 21. The positive electrode of the second DC-DC converter 22 is electrically connected to the second port 24 to output voltage. The negative electrode of the second DC-DC converter 22 is grounded. The first port 23 is electrically connected to the positive electrode of the first energy storage module 31, and the negative electrode of the second energy storage module 32 is grounded. One end of the second load module 42 is electrically connected to the second port 24, and one end of the second load module 42 is grounded. At this time, a certain voltage difference is formed between the second port 24 and the ground terminal, which can supply power to the second load module 42 and charge the second energy storage module 32.

[0038] The second circuit state of the embodiment of the utility model is as follows: Figure 3As shown, in the technical solution, the converter module 2 and the energy storage module 3 are connected in the circuit, including the first DC-DC converter 21 and the second DC-DC converter 22. The first DC-DC converter 21 is connected in series with the second DC-DC converter 22, the negative electrode of the first DC-DC converter 21 is connected to the positive electrode of the second DC-DC converter 22, the positive electrode of the first DC-DC converter 21 is electrically connected to the first port 23, and the output voltage is output. The negative electrode of the second DC-DC converter 22 is grounded, the first energy storage module 31 is connected in series with the second energy storage module 32, the first port 23 is electrically connected to the positive electrode of the first energy storage module 31, and the negative electrode of the second energy storage module 32 is grounded, one end of the first load module 41 is electrically connected to the first port 23, and one end of the first load module is grounded. At this time, a certain voltage difference is formed between the first port 23 and the grounding end, which can supply power to the first load module 41 and charge the first energy storage module 31 and the second energy storage module 32.

[0039] The embodiment of the present application further discloses a power assembly device, which includes the dual-output conversion device as described above, and the flexibility and operability of the power assembly are improved.

[0040] Preferably, a powertrain device further includes a third energy storage module, and the converter module is further used to electrically connect the third energy storage module to receive the voltage provided by the third energy storage module. More specifically, the third energy storage module 1 may include a voltage supply device such as a battery, a power supply, etc.

[0041] The embodiments of the present application also disclose a vehicle, which includes the dual-output conversion device and the powertrain device as described above, and the flexibility and operability of the vehicle are improved.

[0042] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0043] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A dual-output conversion device, characterized in that: include: A converter module, wherein the converter module comprises a plurality of DC-DC converters connected in series in sequence; the converter module comprises a plurality of ports for charging the energy storage module, the converter module outputs voltage through two of the ports, and at least one of the DC-DC converters is connected between the two ports.

2. The dual-output conversion device according to claim 1, characterized in that: The plurality of ports include a first port and a second port, and the converter module outputs a voltage through the first port and / or the second port.

3. The dual-output conversion device according to claim 2, characterized in that: Some of the DC-DC converters are electrically connected to the first port to output voltage or are electrically connected to the second port to output voltage.

4. The dual-output conversion device according to claim 2, characterized in that: The converter module includes two DC-DC converters connected in series, one of which is connected between the first port and the second port, and the other DC-DC converter has one end connected to the first port and the other end grounded.

5. The dual-output conversion device according to any one of claims 2 to 4, characterized in that: The energy storage module includes a first energy storage module and a second energy storage module. The first energy storage module is electrically connected to the first port, and the second energy storage module is electrically connected to the second port.

6. The dual-output conversion device according to claim 5, characterized in that: The energy storage module is also used to electrically connect to a load module to charge the load module. The load module is connected between the first energy storage and the second energy storage, or the load is connected to both ends of the first energy storage or the second energy storage.

7. The dual-output conversion device according to claim 1, characterized in that: One pole of some of the DC-DC converters is grounded.

8. A powertrain device, characterized in that: It comprises the dual-output conversion device as described in any one of claims 1 to 7.

9. The power assembly device according to claim 8, characterized in that: It also includes a third energy storage module, and the converter module is further used to electrically connect to the third energy storage module to receive the voltage provided by the third energy storage module.

10. A vehicle, characterized in that: It comprises the dual-output conversion device as described in any one of claims 1 to 7 or the powertrain device as described in claim 8 or 9.

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