Voltage converter and galvanic pile assembly

Abstract

The utility model provides a voltage converter and a galvanic pile assembly, the voltage converter comprises a converter body and a mounting piece arranged on the converter body, the mounting piece is used for connecting a galvanic pile, or the mounting piece is used for connecting an adapter, and the adapter is used for connecting the galvanic pile. The utility model further provides a galvanic pile assembly which comprises a galvanic pile, the voltage converter and the mounting piece of the galvanic pile connected with the voltage converter. As the voltage converter comprises the converter body and the mounting piece arranged on the converter body, and the mounting piece is used for connecting the galvanic pile, or the mounting piece is used for connecting the adapter, and the adapter is used for connecting the galvanic pile, the voltage converter can adapt to different types of galvanic piles; and diversified requirements of connection of the voltage converter can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of converters, and in particular relates to a voltage converter and a battery stack component. Background Art

[0002] Voltage converters are electromechanical devices for converting electric energy. They are usually used to connect battery stacks and can convert the voltage of the battery stack into another different voltage. The power range can be from very small (small battery) to very large (high voltage power conversion). Voltage converters include DC-DC converters and DC-AC converters. A DC-DC converter can convert the DC voltage of the battery stack into a DC (or near-DC) voltage of a different voltage, and a DC-AC converter can convert the DC voltage of the battery stack into an AC voltage of a different voltage.

[0003] At present, there are two ways to connect the battery stack and the voltage converter. One is to connect a group of copper bars on the voltage converter and another group of copper bars on the battery stack, and the two groups of copper bars are connected to each other, so as to realize the connection between the battery stack and the voltage converter; the other is to connect a first connector on the voltage converter and a second connector on the battery stack, and the first connector and the second connector are connected to each other, so as to realize the connection between the battery stack and the voltage converter. For the first type of battery stack mentioned above, a voltage converter needs to be adapted so that the battery stack and the voltage converter are connected through the copper bars; for the second type of battery stack mentioned above, a voltage converter needs to be adapted so that the battery stack and the voltage converter are connected through the connector. In other words, different voltage converters need to be used to connect different battery stacks to the battery stack, which makes the existing connection method of the voltage converter have certain limitations and cannot meet the diverse needs of the voltage converter connection. Utility Model Content

[0004] In view of this, the utility model provides a voltage converter and a battery stack assembly that can meet the diverse needs of voltage converter connection, so that a voltage converter can be connected to different battery stacks.

[0005] The utility model provides a voltage converter, comprising a converter body and a mounting member arranged on the converter body, wherein the mounting member is used to connect a battery stack, or the mounting member is used to connect an adapter, and the adapter is used to connect the battery stack.

[0006] Furthermore, the voltage converter also includes a first copper busbar, which is disposed in the mounting member, and one end of the first copper busbar is electrically connected to the input end of the converter body, and the other end of the first copper busbar is used to electrically connect to the copper busbar of the battery stack.

[0007] Furthermore, the voltage converter also includes an adapter, which includes an adapter body detachably connected to the mounting part, and a connector arranged on the adapter body, one end of the connector can be electrically connected to the input end of the converter body, and the other end of the connector is used to electrically connect to the mating part of the battery stack.

[0008] Furthermore, the voltage converter also includes a second copper busbar, which is arranged in the mounting part and the adapter body, one end of the second copper busbar is electrically connected to the input end of the converter body, and the other end is electrically connected to the connector.

[0009] Furthermore, the mounting member has an opening, and the opening is used to electrically connect the first copper busbar to the copper busbar of the battery stack.

[0010] Furthermore, the mounting piece has an opening, and the opening is used to allow the second copper busbar to pass through the mounting piece and to allow the other end of the second copper busbar to be electrically connected to the connector.

[0011] Furthermore, the mounting piece is provided with a first cover plate capable of opening or closing the inner space of the mounting piece, and the first copper busbar can be arranged in the mounting piece after the first cover plate is removed.

[0012] Furthermore, the mounting piece is provided with a first cover plate capable of opening or closing the internal space of the mounting piece, the adapter body is provided with a second cover plate capable of opening or closing the internal space of the adapter body, the first cover plate and the second cover plate are independently arranged, and the second copper busbar can be arranged in the mounting piece and the adapter body after removing the first cover plate and the second cover plate.

[0013] Furthermore, a protection switch is provided in the mounting part, and the protection switch can make or break the electrical connection between the input end of the converter body and the fuel cell stack.

[0014] The utility model also provides a battery stack assembly, comprising a battery stack and the voltage converter as described above, wherein the battery stack is connected to a mounting piece of the voltage converter.

[0015] To summarize, since the voltage converter of the present invention includes a converter body and a mounting part arranged on the converter body, the mounting part is used to connect the battery stack, or the mounting part is used to connect the adapter, and the adapter is used to connect the battery stack, the voltage converter of the present invention can be adapted to different types of battery stacks and can meet the diverse needs of voltage converter connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution in the implementation mode of the present utility model, the drawings required for use in the implementation mode of the present utility model will be described below.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a voltage converter according to an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of a voltage converter after being connected to an adapter according to an embodiment of the utility model.

[0019] Figure 3 For Figure 2A schematic diagram of a three-dimensional structure after removing the first cover plate and the second cover plate based on the structure shown.

[0020] Figure 4 For Figure 2 A schematic diagram of a three-dimensional structure after removing the first cover plate, the second cover plate and the adapter body based on the structure shown.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of a battery stack assembly according to an embodiment of the utility model.

[0022] Figure 6 for Figure 5 A three-dimensional exploded schematic diagram of the battery stack assembly is shown.

[0023] Explanation of the numbers: converter body -1, mounting part -2, adapter -3, opening -21, first cover plate -4, protection switch -5, adapter body -31, connector -32, second copper busbar -6, second cover plate -7, battery stack -8, voltage converter -9, first side wall -11, second side wall -12, frame -13, shell -14, first copper busbar -15, outer shell -81, output port -82, third side wall -83, fourth side wall -84, connecting wall -85. DETAILED DESCRIPTION

[0024] The following are preferred implementations of the present utility model. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications are also considered to be within the protection scope of the present utility model.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of a voltage converter according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the three-dimensional structure of a voltage converter after being connected to an adapter according to an embodiment of the utility model. Figure 3 For Figure 2 A schematic diagram of a three-dimensional structure after removing the first cover plate and the second cover plate based on the structure shown. Figure 4 For Figure 2 The schematic diagram of the three-dimensional structure after removing the first cover plate, the second cover plate and the adapter body is shown in the figure. Figure 1-Figure 4 As shown, the voltage converter 9 includes a converter body 1 and a mounting member 2 provided on the converter body 1, the mounting member 2 is used to connect the battery stack 8, or the mounting member 2 is used to connect the adapter 3, and the adapter 3 is used to connect the battery stack 8. In other words, the mounting member 2 can be used to directly connect the battery stack 8; it can also be used to connect the adapter 3, and the battery stack 8 is connected through the adapter 3.

[0026] The voltage converter 9 is used to convert the voltage of the stack 8 into another different voltage. In the field of fuel cells, due to the large voltage variation range of the fuel cell output, a voltage converter 9 is usually required to achieve the purpose of power control. The voltage converter 9 can be a direct current-to-direct current converter (DC-DC), a direct current-to-alternating current converter (DC-AC), etc. The converter body 1 of the voltage converter 9 provided by the utility model includes a first side wall 11 for abutting against the housing 81 of the stack 8, a second side wall 12 arranged opposite to the first side wall 11, and a frame 13 connected between the first side wall 11 and the second side wall 12. The first side wall 11, the second side wall 12 and the frame 13 constitute the housing 14 of the voltage converter 9. The housing 14 of the voltage converter has an inner cavity, and a voltage conversion unit, a heat dissipation water channel, a main control board, a leakage detection module, etc. can be arranged in the inner cavity. The voltage conversion unit is used to convert the voltage of the stack 8 into another different voltage. The heat dissipation water channel is used for cooling water to pass through, and the cooling water dissipates heat from the voltage converter 9. The main control board is used to control the voltage conversion unit. One end of the leakage detection module is connected to the input end of the voltage conversion unit to detect whether the voltage conversion unit has leakage, and the other end of the leakage detection module is connected to the main control board. When the leakage detection module detects leakage, the leakage detection module sends a leakage signal to the main control board, and the main control board controls the voltage conversion unit to stop operating, thereby improving the safety of the voltage converter 9 when in use. The mounting member 2 is provided on the first side wall 11. Since the first side wall 11 is used to abut against the outer shell 81 of the battery stack 8, the voltage converter 9 and the battery stack 8 can be connected through the mounting member 2.

[0027] When the mounting member 2 is used to directly connect the battery stack 8, the voltage converter 9 may further include a first copper bar 15, which is disposed in the mounting member 2, and one end of the first copper bar 15 is electrically connected to the input end 16 of the converter body 1, and the other end is used to electrically connect the copper bar of the battery stack 8. The first copper bar 15 is a copper busbar with a certain length, which can be used for conducting electricity. By inserting one end of the first copper bar 15 into the port of the input end 16 of the converter body 1, the electrical connection between the first copper bar 15 and the input end 16 of the converter body 1 is achieved. One end of the copper bar of the battery stack 8 is electrically connected to the output port 82 of the battery stack 8, and the other end of the copper bar of the battery stack 8 is electrically connected to the other end of the first copper bar 15, thereby achieving the connection between the voltage converter 9 and the battery stack 8. Since the first copper bar 15 is connected to the input end 16 of the voltage converter body 1, and the battery stack copper bar that cooperates with the first copper bar 15 is connected to the output end of the battery stack 8, the voltage converter 9 and the battery stack 8 can be connected with a certain gap. However, it is not limited to this. The first copper bar 15 and the battery stack copper bar may not be provided, and the input end 16 of the converter body 1 and the output end of the battery stack 8 may be directly connected. In this case, the voltage converter 9 and the battery stack 8 need to be tightly installed, and it is difficult to separate a certain gap. The shape of the first copper bar 15 is not limited, for example, it can be plate-shaped, long strip-shaped, line-shaped, etc. However, the first copper bar 15 needs to have a certain length to achieve the connection between the voltage converter 9 and the battery stack 8. In addition, the length of the first copper bar 15 should not be too long to avoid unnecessary loss of the circuit.

[0028] The mounting member 2 may have an opening 21, and the opening 21 is used to electrically connect the first copper bar 15 to the copper bar of the battery stack 8. The opening 21 has a certain accommodation space, and its shape may be square, circular, etc. The mounting member 2 is also provided with a first cover plate 4 that can open or close the internal space of the mounting member 2, and the first copper bar 15 can be arranged in the mounting member 2 after removing the first cover plate 4. The first cover plate 4 can also cover the opening 21. A first bolt hole can be provided on the first cover plate 4, and a second bolt hole corresponding to the first bolt hole is provided on the mounting member 2. The first bolt 111 passes through the first bolt hole and the second bolt hole, so that the first cover plate 4 is installed on the mounting member 2. When the first cover plate 4 needs to be removed, the first bolt 111 can be removed to remove the first cover plate 4. By providing the first cover plate 4, the first copper bar 15 can be prevented from being exposed to the outside, thereby preventing the staff from being electrocuted by accidental touch. A protective switch 5 is also provided in the mounting member 2, and the protective switch 5 can conduct or disconnect the electrical connection between the input end of the converter body 1 and the battery stack 8. When the staff wants to connect the battery stack 8 to the voltage converter 9, in order to prevent the staff from electric shock, the protection switch 5 can be disconnected first, and then the protection switch 5 can be turned on after the battery stack 8 is installed on the voltage converter 9. The protection switch 5 can be arranged under the first cover plate 4, that is, the first cover plate 4 covers the protection switch 5. Since the protection switch 5 is covered by the first cover plate 4, it can avoid accidental contact by the staff, thereby disconnecting the electrical connection between the battery stack 8 and the voltage converter 9.

[0029] When the mounting member 2 is used to connect the adapter 3, and the adapter 3 is used to connect the battery stack 8, the voltage converter 9 also includes the adapter 3, which includes an adapter body 31 detachably connected to the mounting member 2, and a plug-in portion 32 provided on the adapter body 31, one end of the plug-in portion 32 can be electrically connected to the input end 16 of the converter body 1, and the other end of the plug-in portion 32 is used to electrically connect to the matching portion of the battery stack 8. The matching portion of the battery stack 8 is a component that matches the plug-in portion 32. Specifically, an adapter 3 (such as a connector) can also be provided on the battery stack 8. The adapter 3 also includes an adapter body 31 and a plug-in portion 32. The plug-in portion 32 of the battery stack 8 and the plug-in portion 32 of the voltage converter 9 are connected to each other, so as to connect the battery stack 8 to the voltage converter 9. The plug-in portion 32 is used for electrical connection, and the plug-in portion 32 is formed in a shape protruding from the adapter body 31. The number of the plug-in portion 32 is not limited, for example, it can be 1, 2, etc. In the example shown in the figure, there are two connectors 32 , and the two connectors 32 are parallel to each other and are arranged at a certain distance.

[0030] Further, the voltage converter may also include a second copper bar 6, which is arranged in the mounting member 2 and the adapter body 31, one end of the second copper bar 6 is electrically connected to the input end of the converter body 1, and the other end is electrically connected to the plug-in portion 32. The second copper bar 6 is a copper busbar with a certain length, which can be used for conducting electricity. By inserting one end of the second copper bar 6 into the port of the input end 16 of the converter body 1, the electrical connection between the second copper bar 6 and the input end 16 of the converter body 1 is achieved. There is a accommodating space in the mounting member 2 and the adapter body 31 for the second copper bar 6 to pass through, so that the second copper bar 6 is arranged in the mounting member 2 and the adapter body 31. Since the second copper bar 6 has a certain length, the input end of the adapter 3 and the converter body 1 can be separated by a certain gap through the arrangement of the second copper bar 6. Of course, the second copper bar 6 may not be arranged. In this case, the input end of the adapter 3 and the converter body 1 needs to be tightly installed, and it is difficult to separate a certain gap. The shape of the second copper bar 6 is not limited, for example, it can be plate-shaped, strip-shaped, line-shaped, etc., but the second copper bar 6 needs to have a certain length to achieve the connection between the adapter 3 and the input end of the converter body 1. In addition, the length of the first copper bar 15 should not be too long to avoid unnecessary loss of the circuit.

[0031] The mounting member 2 may have an opening 21, and the opening 21 is used to allow the second copper busbar 6 to pass through the mounting member 2, and the other end of the second copper busbar 6 is electrically connected to the plug-in portion 32. The opening 21 has a certain accommodating space, and its shape may be square, circular, etc. The mounting member 2 is also provided with a first cover plate 4 that can open or close the internal space of the mounting member 2, and the adapter body 31 is provided with a second cover plate 7 that can open or close the internal space of the adapter body 31. The first cover plate 4 and the second cover plate 7 are independently arranged, that is, the first cover plate 4 and the second cover plate 7 do not affect each other, and are independently installed and disassembled. The second copper busbar 6 can be arranged in the mounting member 2 and the adapter body 31 after removing the first cover plate 4 and the second cover plate 7. The first cover plate 4 can also cover the opening 21. A first bolt hole can be provided on the first cover plate 4, and a second bolt hole corresponding to the first bolt hole is provided on the mounting member 2, and the first bolt 111 passes through the first bolt hole and the second bolt hole, so that the first cover plate 4 is installed on the mounting member 2. When it is necessary to remove the first cover plate 4, the first bolt 111 can be removed to remove the first cover plate 4. A third bolt hole can be provided on the second cover plate 7, and a fourth bolt hole corresponding to the third bolt hole is provided on the adapter body 31, and the second bolt 112 passes through the third bolt hole and the fourth bolt hole, so that the second cover plate 7 is installed on the adapter body 31. When it is necessary to remove the second cover plate 7, the second bolt 112 can be removed to remove the second cover plate 7. By setting the first cover plate 4 and the second cover plate 7, it is possible to avoid the second copper bar 6 being exposed to the outside, thereby preventing the staff from being electrocuted by accidental touch. A protective switch 5 is also provided in the mounting member 2, and the protective switch 5 can turn on or off the electrical connection between the input end of the converter body 1 and the battery stack 8. When the staff wants to connect the battery stack 8 to the voltage converter 9, in order to prevent the staff from electric shock accidents, the protective switch 5 can be disconnected first, and then the protective switch 5 can be turned on after the battery stack 8 is installed on the voltage converter 9. The protection switch 5 can be arranged under the first cover plate 4, that is, the first cover plate 4 covers the protection switch 5. Since the protection switch 5 is covered by the first cover plate 4, it can be avoided that the staff touches it accidentally, thereby disconnecting the electrical connection between the battery stack 8 and the voltage converter 9.

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of a battery stack assembly according to an embodiment of the utility model. Figure 6 for Figure 5 The three-dimensional exploded schematic diagram of the battery stack assembly is shown in FIG. Figure 5-Figure 6As shown, the utility model also provides a battery stack assembly, including a battery stack 8 and a voltage converter 9 as described above, and the battery stack 8 is connected to the mounting member 2 of the voltage converter 9. The battery stack 8 can be a fuel cell system battery stack, and the fuel cell system battery stack can output direct current. When the mounting member 2 is used to directly connect the battery stack 8, the input end 16 of the converter body 1 and the output end 82 of the battery stack 8 can be directly connected. At this time, the voltage converter 9 and the battery stack 8 need to be tightly installed, and it is difficult to separate a certain gap. Of course, the voltage converter 9 can also include a first copper bar 15, the first copper bar 15 is arranged in the mounting member 2, and one end of the first copper bar 15 is electrically connected to the input end 16 of the converter body 1, and the battery stack 8 is provided with a battery stack copper bar that matches the first copper bar 15, and the other end of the first copper bar 15 is connected to the battery stack copper bar, thereby realizing the connection between the battery stack 8 and the voltage converter 9. When the mounting member 2 is used to connect the adapter 3, and the adapter 3 is used to connect the battery stack 8, the voltage converter 9 also includes the adapter 3, which includes an adapter body 31 detachably connected to the mounting member, and a plug-in portion 32 provided on the adapter body 31, and one end of the plug-in portion 32 is electrically connected to the input end 16 of the converter body 1. The battery stack 8 is also provided with an adapter 3 (such as a connector), which also includes an adapter body 31 and a plug-in portion 32, and the other ends of the plug-in portion 32 of the battery stack 8 and the plug-in portion 32 of the voltage converter 9 are connected to each other, so as to connect the battery stack 8 to the voltage converter 9.

[0033] The battery stack 8 includes a third side wall 83 for abutting against the first side wall 11 of the voltage converter 9, a fourth side wall 84 arranged opposite to the third side wall 83, and a connecting wall 85 connected between the third side wall 83 and the fourth side wall 84. The third side wall 83, the fourth side wall 84 and the connecting wall 85 constitute the outer shell 81 of the battery stack 8. The first side wall 11 and the third side wall 83 are abutted and fixed to each other, so as to realize the installation of the battery stack 8 and the voltage converter 9. The output port 82 of the battery stack 8 is arranged on the third side wall 83.

[0034] To summarize, since the voltage converter 9 of the utility model includes a converter body 1 and a mounting member 2 arranged on the converter body, the mounting member 2 is used to connect the battery stack 8, or the mounting member 2 is used to connect the adapter 3, and the adapter 3 is used to connect the battery stack 8, the voltage converter 9 of the utility model can be adapted to different types of battery stacks 8, and can meet the diverse connection requirements of the voltage converter 9.

[0035] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, it can be detachably connected, or it can be integrated. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] The above is a detailed introduction to the contents provided by the implementation methods of the utility model, and the principles and implementation methods of the utility model are explained and illustrated. These explanations are only used to help understand the method and core ideas of the utility model. However, the contents of this specification should not be understood as limiting the utility model. Those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. These modifications and variations of the utility model belong to the scope of the claims of the utility model and their equivalent technologies.

Claims

1. A voltage converter, It is characterized in that It comprises a converter body and a mounting part arranged on the converter body, wherein the mounting part is used to connect to a fuel cell stack, or the mounting part is used to connect to an adapter, and the adapter is used to connect to the fuel cell stack.

2. The voltage converter according to claim 1, It is characterized in that The voltage converter also includes a first copper busbar, which is disposed in the mounting member, and one end of the first copper busbar is electrically connected to the input end of the converter body, and the other end of the first copper busbar is used to electrically connect to the copper busbar of the battery stack.

3. The voltage converter according to claim 1, It is characterized in that The voltage converter also includes an adapter, which includes an adapter body detachably connected to the mounting member, and a connector arranged on the adapter body, one end of the connector can be electrically connected to the input end of the converter body, and the other end of the connector is used to electrically connect to the mating part of the fuel cell stack.

4. The voltage converter according to claim 3, It is characterized in that The voltage converter also includes a second copper busbar, which is arranged in the mounting part and the adapter body, one end of the second copper busbar is electrically connected to the input end of the converter body, and the other end is electrically connected to the connector.

5. The voltage converter according to claim 2, It is characterized in that The mounting member has an opening, and the opening is used to electrically connect the first copper busbar to the copper busbars of the battery stack.

6. The voltage converter as claimed in claim 4, It is characterized in that The mounting piece has an opening, and the opening is used to allow the second copper busbar to pass through the mounting piece and to allow the other end of the second copper busbar to be electrically connected to the connector.

7. The voltage converter as claimed in claim 2, It is characterized in that The mounting member is provided with a first cover plate capable of opening or closing the inner space of the mounting member, and the first copper busbar can be arranged in the mounting member after the first cover plate is removed.

8. The voltage converter according to claim 4, It is characterized in that The mounting piece is provided with a first cover plate capable of opening or closing the internal space of the mounting piece, and the adapter body is provided with a second cover plate capable of opening or closing the internal space of the adapter body, the first cover plate and the second cover plate are independently arranged, and the second copper busbar can be arranged in the mounting piece and the adapter body after removing the first cover plate and the second cover plate.

9. The voltage converter according to claim 1, It is characterized in that A protection switch is also provided in the mounting member, and the protection switch can make or break the electrical connection between the input end of the converter body and the fuel cell stack.

10. A battery stack assembly, It is characterized in that It comprises a battery stack and a voltage converter as described in any one of claims 1 to 9, wherein the battery stack is connected to the mounting part of the voltage converter.

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