Common direct current bus driver system and copper bar locking piece

Abstract

The utility model relates to a driver system of a common direct current bus and a copper bar locking piece. The driver system of the common direct current bus comprises a first driver, a second driver, a first copper bar locking piece and a second copper bar locking piece. The first driver is driven by a first power and includes a first mounted portion. The first copper bar locking piece is combined with the first installed part and comprises a first copper bar base and a first copper bar piece arranged on the first copper bar base. The second driver is driven by a second power and includes a second mounted portion. The second copper bar locking piece is combined with the second installed part and comprises a second copper bar base and a second copper bar piece. The second copper bar base comprises an abutting part. The second copper bar piece is arranged on the second copper bar base and comprises a matching part. The matching part accommodates the abutting part so as to allow the first driver and the second driver to be combined and assembled. The abutting part limits the first copper bar piece so as to prevent the first driver and the second driver from being combined and assembled.

Description

Technical Field

[0001] This utility model relates to a driver system and a copper bus lock, particularly a driver system with a common DC bus, and a copper bus lock for the driver integrated into the driver system with the common DC bus. Background Technology

[0002] In known drive systems, such as those used in servo motors, there is a power supply module and multiple drivers. To reduce the number of three-phase power wirings in the power supply module and increase cabinet space, a common DC bus configuration is sometimes used. In drive systems with a common DC bus, considering the large current carrying capacity in the common section and ease of installation, non-flexible and highly conductive mechanisms, such as copper busbar fasteners, are generally used.

[0003] In the aforementioned common DC bus driver system, the copper busbar of the first driver connected to the power module must carry the total current of all drivers. The current carried by the copper busbars of each driver connected after the first driver decreases sequentially. Finally, the copper busbar of the last driver at the very end only needs to carry the current required by itself.

[0004] In systems with multiple drives, incorrect drive installation order can sometimes occur. Previously, to prevent drives from burning out due to excessive current, the copper busbars on each drive had to be capable of handling the total current. Therefore, the cross-sectional area (or thickness) of the copper busbars needed to be of a certain level, and the material had to be highly conductive (and thermally conductive) red copper. Even for lower-cost, low-power drives (e.g., those below 1.5kW), copper busbars with the same performance as those used in high-power drives had to be used, increasing manufacturing costs.

[0005] Therefore, for known common DC bus drive systems, there are issues that need to be overcome, such as ease of installation and the need to balance safety with cost reduction. Utility Model Content

[0006] Therefore, to address the aforementioned known problems, this utility model provides a common DC bus driver system, including a first driver, a first copper bus lock, a second driver, and a second copper bus lock. The first driver is driven by a first power source and includes a first mounting portion. The first copper bus lock is attached to the first mounting portion and includes a first copper bus base and a first copper bus member disposed on the first copper bus base. The second driver is driven by a second power source and includes a second mounting portion. The second copper bus lock is attached to the second mounting portion and includes a second copper bus base and a second copper bus member. The second copper bus base includes a top abutment portion. The second copper bus member is disposed on the second copper bus base and includes a mating portion. The mating portion accommodates the top abutment portion to allow the first driver and the second driver to be assembled together. The top abutment portion limits the first copper bus member to prevent the first driver from being assembled downstream of the second driver.

[0007] In some embodiments of this invention, the first power is greater than the second power.

[0008] In some embodiments of this invention, the driver system further includes a power module that supplies current to the aforementioned first driver and the aforementioned second driver. In the direction of current supply, the aforementioned first driver is located upstream of the aforementioned second driver.

[0009] In some embodiments of this utility model, the aforementioned top abutment portion limits the aforementioned first copper busbar to prevent the aforementioned first driver from being electrically connected downstream of the aforementioned second driver.

[0010] In some embodiments of this invention, the aforementioned mating portion is groove-shaped, and the aforementioned abutment portion is protruding. The aforementioned abutment portion is accommodated within the aforementioned mating portion to allow the aforementioned second driver to be electrically connected to the aforementioned first driver.

[0011] In some embodiments of this utility model, when the aforementioned first copper busbar rotates to a first locking position, the aforementioned abutment portion limits the aforementioned first copper busbar from reaching the aforementioned first locking position. When the aforementioned second copper busbar rotates to a second locking position, the aforementioned abutment portion allows the aforementioned second copper busbar to reach the aforementioned second locking position.

[0012] In some embodiments of this utility model, the aforementioned second copper busbar further includes a second inner fixing member, which is configured to pass through the aforementioned second copper busbar base and be electrically connected to the aforementioned second driver. At least the portion of the aforementioned second inner fixing member that is electrically connected to the aforementioned second driver is bendable.

[0013] In some embodiments of this utility model, the aforementioned first copper busbar base further includes at least two aforementioned first copper busbar components and a first step portion. The aforementioned first step portion has at least two step surfaces in the vertical direction, and the aforementioned first copper busbar components are respectively placed on the aforementioned step surfaces.

[0014] In some embodiments of this utility model, the aforementioned second copper busbar base further includes at least two aforementioned second copper busbar components and a second step portion. The aforementioned second step portion has at least two step surfaces in the vertical direction, and the aforementioned second copper busbar components are respectively placed on the aforementioned step surfaces.

[0015] Furthermore, this utility model provides a copper busbar locking fastener, which is integrated into a driver system of a common DC bus, including a copper busbar base and a copper busbar component. The copper busbar base includes a top abutment portion. The copper busbar component is disposed on the copper busbar base and includes a mating portion. The mating portion accommodates the top abutment portion to allow for the assembly of the drivers.

[0016] By employing the aforementioned technical features, this invention avoids placing the low-power driver upstream of the high-power driver in the current supply direction, thereby preventing the copper busbar fasteners of the low-power driver from carrying excessively high current. This simultaneously reduces the manufacturing cost of the copper busbars for the low-power driver and ensures safety during the assembly of the drivers. Attached Figure Description

[0017] Figure 1 This is a front view of a driver system according to an embodiment of the present invention;

[0018] Figure 2 This is a front view of the first driver and the first copper busbar locking device according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A partial sectional view of line segment AA;

[0020] Figure 4 This is an exploded view of the first copper busbar lock fitting according to an embodiment of the present invention;

[0021] Figure 5 This is a front view of the second driver and the second copper busbar locking device according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A partial sectional view of line segment BB;

[0023] Figure 7 This is an exploded view of the second copper busbar lock according to an embodiment of the present invention;

[0024] Figure 8AThis is a schematic diagram of the bendable portion of the second internal fixing member in an embodiment of the present invention before it is bent.

[0025] Figure 8B This is a schematic diagram of the bendable portion of the second internal fixing member according to an embodiment of the present invention after it has been bent.

[0026] Figure 9 This is a schematic diagram showing the first driver and the second driver assembled in the correct order according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram showing the first driver and the second driver being assembled in an incorrect order according to an embodiment of the present invention.

[0028] [Symbol Explanation]

[0029] 100: Drive System

[0030] 10: First Driver

[0031] 11: First Installed Part

[0032] 20: First copper busbar lock firmware

[0033] 21: First copper busbar base

[0034] 22: First segment

[0035] 23: Step surface

[0036] 24: First copper busbar

[0037] 25: First Middleware

[0038] 26: First internal fixation component

[0039] 27: First front cover

[0040] 30: Second drive

[0041] 31: Second Installed Part

[0042] 40: Second copper busbar lock firmware (copper busbar lock firmware)

[0043] 41: Second copper busbar base (copper busbar base)

[0044] 42: Top and bottom

[0045] 43: Second segment difference

[0046] 44: Step surface

[0047] 45: Second copper busbar (copper busbar)

[0048] 46: Coordination Department

[0049] 47: Second internal fixation component

[0050] 48: Bendable part

[0051] 49: Second front cover

[0052] 50: Power Module

[0053] N: Nut

[0054] S: Screw

[0055] P1: First locking position

[0056] P2: Second locking position

[0057] D: Supply Direction Detailed Implementation

[0058] The preferred embodiment of this utility model is described below with reference to the accompanying drawings. The foregoing and other technical contents, features, and effects of this utility model are detailed in the following description of a preferred embodiment with reference to the accompanying drawings.

[0059] First, please refer to Figure 1 The image shows a front view of a driver system 100 according to an embodiment of the present invention. In this embodiment, the driver system 100 mainly includes a first driver 10, a first copper busbar locking device 20, a second driver 30, a second copper busbar locking device 40 (an example of a copper busbar locking device), and a power module 50. The power module 50 supplies current to the first driver 10 and the second driver 30. The first driver 10 is driven by a first power source, and the second driver 30 is driven by a second power source, wherein the first power source is greater than the second power source.

[0060] The detailed construction of the first copper busbar locking fastener 20 and the second copper busbar locking fastener 40 will be described later. Figure 1 The main illustration shows the first driver 10 connected to the first copper busbar base 21 and the first copper busbar component 24 via the first copper busbar locking fastener 20, and to the left of the first driver 10 ( Figure 1 The power module 50 (on the left of the diagram) is electrically connected. Also, in... Figure 1 The main illustration shows the second driver 30 connected to the second copper busbar base 41 (an example of a copper busbar base) and the second copper busbar component 45 (an example of a copper busbar component) via the second copper busbar locking fastener 40, and to the left of the second driver 30 ( Figure 1 The first driver 10 (on the left of the diagram) is electrically connected.

[0061] In this embodiment, the driver system 100 adopts a common DC bus design. Therefore, the current supplied by the power module 50 flows sequentially through the first driver 10 and the second driver 30 along the supply direction D. That is, in the current supply direction D, the first driver 10 is located upstream of the second driver 30. Therefore, the current first flows out from the copper busbar on the power module 50, then flows through the first copper busbar 24, and then through the second copper busbar 45. In this case, the current carried by the first copper busbar 24 is greater than the current carried by the second copper busbar 45, and the current carried by the first copper busbar 24 can be considered as the total current of all drivers.

[0062] Next, please refer to Figures 2 to 4 The detailed configuration of the first driver 10 and the first copper busbar locking fastener 20 in this case will be described. Figure 2 This is a front view of the first driver 10 and the first copper busbar locking device 20 according to an embodiment of the present invention. Figure 3 for Figure 2 A partial sectional view of line segment AA. Figure 4 This is an exploded view of the first copper busbar locking device 20 according to an embodiment of the present invention.

[0063] The first driver 10 has a first mounting portion 11 at its upper front end (see reference). Figure 3 The first copper busbar locking fastener 20 is attached to the first mounting portion 11. More specifically, the first copper busbar base 21 of the first copper busbar locking fastener 20 is attached to the first mounting portion 11.

[0064] like Figure 4 As shown, the first copper busbar locking device 20 includes, in addition to the aforementioned first copper busbar base 21 and two aforementioned first copper busbar components 24, two first intermediate components 25, two first inner fixing components 26, and a first front cover portion 27. In this embodiment, the first copper busbar base 21 further includes a first step portion 22. The first step portion 22 is located in the vertical direction ( Figure 4 The first step portion 22 has at least two step surfaces 23 in the vertical direction, and the two first copper busbars 24 are respectively placed on the two step surfaces 23. In this way, the first copper busbars 24 can be more securely fixed. However, the number of step surfaces 23 is not limited to this. Depending on the number of first copper busbars 24 to be provided, the first step portion 22 may have one or more step surfaces 23.

[0065] The shape of the first copper busbar 24 is not limited, but it is at least formed with holes for fixing to the first copper busbar base 21 and notches or holes for fixing to the copper busbar base of other drives.

[0066] In this embodiment, the thickness of the first copper busbar 24 is, for example, 5 mm, and it is made of a highly conductive (highly thermally conductive) material such as red copper, but the thickness and material are not limited to these. However, overall, in order to carry the total current of all drivers, the combination of the thickness and material of the first copper busbar 24 makes it impossible to manufacture the first copper busbar 24 and the first intermediate part 25 by die-cutting, and they can only be manufactured by laser processing or other non-die-cutting processing methods.

[0067] The first copper busbar 24, the first intermediate member 25, and the first inner fixing member 26 are fixed to the first copper busbar base 21 by screws S. For example, in such a case... Figure 2 as well as Figure 3 With the first copper busbar locking fastener 20 engaged in the first mounting portion 11, the first copper busbar component 24 and the first intermediate component 25 are fixed to the first copper busbar base 21 from the front by screws S, and the first inner fixing component 26 is fixed to the first copper busbar base 21 from the rear by screws S (please refer to...). Figure 3 ).

[0068] like Figure 3 As shown, one end of the first inner fixing member 26 is fixed to the first copper busbar base 21, and the other end is fixed inside the first driver 10. In this state, the first copper busbar locking member 20 is electrically connected to the first driver 10 via the first inner fixing member 26. That is, the current supplied by the power module 50 will first flow through the first copper busbar member 24, and then sequentially through the first intermediate member 25 and the first inner fixing member 26 to be supplied to the first driver 10.

[0069] The first front cover 27 is rotatably mounted on the lower front part of the first copper busbar base 21. In the open state, the first front cover 27 does not cover the first copper busbar component 24, allowing the operator to install or remove the first copper busbar component 24. In the closed state, the first front cover 27 covers the first copper busbar component 24 to prevent accidents such as electric shock. That is, except for the first front cover 27 and the first copper busbar base 21, which are made of non-conductive materials, the rest of the first copper busbar locking fastener 20 can be made of conductive materials, for example.

[0070] Next, please refer to Figures 5 to 7 ,as well as Figure 8A , 8B The detailed configuration of the second driver 30 and the second copper busbar locking fastener 40 in this case will be described. Figure 5 This is a front view of the second driver 30 and the second copper busbar locking fastener 40 according to an embodiment of the present invention. Figure 6 for Figure 5 A partial sectional view of the BB line segment. Figure 7This is an exploded view of the second copper busbar locking device 40 according to an embodiment of the present invention. Figure 8A This is a schematic diagram of the bendable portion 48 of the second inner fixing member 47 in an embodiment of the present invention before it is bent. Figure 8B This is a schematic diagram of the bendable portion 48 of the second inner fixing member 47 according to an embodiment of the present invention after being bent.

[0071] The second driver 30 has a second mounting portion 31 at its upper front end (see reference). Figure 6 The second copper busbar locking fastener 40 is attached to the second mounting portion 31. More specifically, the second copper busbar base 41 of the second copper busbar locking fastener 40 is attached to the second mounting portion 31.

[0072] like Figure 7 As shown, the second copper busbar locking device 40 includes, in addition to the aforementioned second copper busbar base 41 and two aforementioned second copper busbar components 45, two second inner fixing components 47 and a second front cover portion 49. In this embodiment, the second copper busbar base 41 further includes a top abutment portion 42 and a second step portion 43.

[0073] If the first driver 10 and the second driver 30 are assembled in an incorrect order (e.g., in the current supply direction D, the first driver 10 is located downstream of the second driver 30), the top abutment 42 abuts against the first copper busbar 24 to prevent the first driver 10 from being assembled downstream of the second driver 30.

[0074] The second segment 43 is in the vertical direction ( Figure 7 The second step portion 43 has at least two step surfaces 44 in the vertical direction, and two second copper busbars 45 are respectively placed on the two step surfaces 44. This allows the second copper busbars 45 to be more securely fixed. However, the number of step surfaces 44 is not limited to this. Depending on the number of second copper busbars 45 to be provided, the second step portion 43 may have one or more step surfaces 44.

[0075] In this embodiment, the abutment portion 42 is formed as a protrusion protruding upward from the second copper busbar base 41 and is disposed on the left and right sides of the step surface 44. The abutment portion 42 can limit the first copper busbar member 24 to prevent the first driver 10 from being assembled downstream of the second driver 30. However, the configuration of the abutment portion 42 is not limited to this. As long as it can prevent the first driver 10 from being assembled downstream of the second driver 30, the height of the protrusion can be arbitrary, and the abutment portion 42 can be disposed only on the right side of the step surface 44 (downstream of the current supply direction D).

[0076] The second copper busbar 45 includes a mating portion 46, which is, for example, a groove-shaped portion formed in the second copper busbar 45. When the first driver 10 and the second driver 30 are assembled in the correct order (e.g., in the current supply direction D, the first driver 10 is located upstream of the second driver 30), the mating portion 46 accommodates the abutment portion 42 to allow the first driver 10 and the second driver 30 to be assembled.

[0077] The shape of the second copper busbar 45 is not limited, but it is at least formed with holes for fixing to the second copper busbar base 41, and notches or holes for fixing to the copper busbar base of other drives.

[0078] In this embodiment, the thickness of the second copper busbar 45 is, for example, 2 mm, and it is made of a highly conductive (highly thermally conductive) material such as red copper, but the thickness and material are not limited to these. However, overall, the combination of the thickness and material of the second copper busbar 45 allows it to be manufactured by die-cutting without the need for laser processing or other non-die-cutting methods. Therefore, the second copper busbar 45 can meet the low-power (second power) requirements of the second driver while reducing manufacturing costs.

[0079] Furthermore, since the second copper busbar 45 is thinner than the first copper busbar 24, the depth of its internal thread may be insufficient. Therefore, the second copper busbar 45 is fixed to the second inner fixing member 47 system via screws S and nuts N, and the second inner fixing member 47 system is tightly fastened into the second copper busbar base 41. For example, in... Figure 5 as well as Figure 6 With the second copper busbar locking fastener 40 engaged with the second mounting part 31, the second copper busbar component 45 is fixed to the second copper busbar base 41 from the front by screws S (please refer to...). Figure 6 ).

[0080] The second internal fixing member 47 includes a bendable portion 48, which is electrically connected to the second actuator 30 and is bendable. Figure 8A As shown, after the second inner fixing member 47 is fixed to the second copper busbar base 41, the bendable portion 48 is configured to pass through the second copper busbar base 41. At this time, the bendable portion 48 is not electrically connected to the second driver 30.

[0081] Next, as Figure 8B As shown, the portion of the bendable part 48 that is electrically connected to the second actuator 30 is deformed through a post-bending process. Then, as... Figure 6 As shown, the deformable bendable portion 48 is fixed inside the second actuator 30.

[0082] like Figure 6As shown, one end of the second inner fixing member 47 is fixed to the second copper busbar base 41, and the other end (the bendable portion 48) is fixed inside the second driver 30. In this state, the second copper busbar locking member 40 is electrically connected to the second driver 30 via the second inner fixing member 47. That is, the current supplied by the power module 50 will first flow through the second copper busbar member 45, and then through the second inner fixing member 47 to be supplied to the second driver 30.

[0083] The second front cover 49 is rotatably mounted on the lower front part of the second copper busbar base 41. In the open state, the second front cover 49 does not cover the second copper busbar component 45, allowing the operator to install or remove the second copper busbar component 45. In the closed state, the second front cover 49 covers the second copper busbar component 45 to prevent accidents such as electric shock. That is, except for the second front cover 49 and the second copper busbar base 41, which are made of non-conductive materials, the rest of the second copper busbar locking fastener 40 can be made of conductive materials, for example.

[0084] Next, with Figure 9 as well as Figure 10 This section explains how the top abutment portion 42 of this utility model functions. Figure 9 This is a schematic diagram showing the first driver 10 and the second driver 30 assembled in the correct order according to an embodiment of the present invention. Figure 10 This is a schematic diagram of the first driver 10 and the second driver 30 being assembled in an incorrect order according to an embodiment of the present invention.

[0085] like Figure 9 As shown, when assembled in the correct order, when the second copper busbar 45 rotates to a second locking position P2, the mating part 46 receives the abutment part 42, thus allowing the second copper busbar 45 to reach the second locking position P2. In this case, electrical connection is allowed between the first driver 10 and the second driver 30 (or between the first copper busbar locking fastener 20 and the second copper busbar locking fastener 40).

[0086] Because the first driver 10 and the second driver 30 are assembled in the correct order, the total current supplied by the power module 50 to all drivers will flow along the current supply direction D, first through the first copper busbar latch 20 with higher current carrying capacity, driving the high-power first driver 10. Then, the remaining current will flow along the supply direction D through the low-power second driver 30. In this way, excessive current is avoided from being carried by the second copper busbar latch 40 of the low-power second driver 30, allowing the driver system 100 to operate normally and reliably.

[0087] Next, as Figure 10As shown, when the first copper busbar 24 is assembled in an incorrect order, when it rotates to a first locking position P1, the abutment 42 prevents the first copper busbar 24 from reaching the first locking position P1. In this case, electrical connection is not allowed between the first driver 10 and the second driver 30 (or between the first copper busbar locking member 20 and the second copper busbar locking member 40), and the first front cover 27 and the second front cover 49 cannot be closed as a result.

[0088] Therefore, through the aforementioned technical features, the driver system of this utility model can prevent the low-power second driver 30 from being located upstream of the high-power first driver 10 in the current supply direction D, thereby preventing the second copper busbar locking fastener 40 (second copper busbar 45 and second inner fixing member 47) of the low-power second driver 30 from carrying excessive current. In this way, the manufacturing cost of the second copper busbar 45 and the second inner fixing member 47 of the low-power second driver 30 can be reduced simultaneously, while also ensuring safety during the assembly of the drivers.

[0089] Furthermore, in this invention, the second copper busbar locking fastener 40 can also be provided independently as a single copper busbar locking fastener, integrated into a common DC busbar driver system, comprising a copper busbar base and a copper busbar component. The copper busbar base includes a top abutment portion. The copper busbar component is disposed on the copper busbar base and includes a mating portion. The mating portion accommodates the top abutment portion to allow for the assembly of the drivers.

[0090] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains may make modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the scope defined in the appended claims.

Claims

1. A driver system with a common DC bus, characterized in that, include: A first driver, driven by a first power source, includes a first mounted part; A first copper busbar locking fastener, which is attached to the first mounting part, includes: A first copper busbar base; and A first copper busbar component is disposed on the base of the first copper busbar; A second driver, driven by a second power source, includes a second mounted portion and a second copper busbar locking fastener, which is coupled to the second mounted portion and includes: A second copper busbar base, including a top abutment; and A second copper busbar component is disposed on the base of the second copper busbar, including a mating part; The mating part accommodates the abutment part to allow the first driver and the second driver to be assembled together; the abutment part limits the first copper busbar to prevent the first driver from being assembled downstream of the second driver.

2. The driver system according to claim 1, characterized in that, The first power is greater than the second power.

3. The driver system according to claim 1, characterized in that, Also includes: A power module supplies current to the first driver and the second driver; In the direction of current supply, the first driver is located upstream of the second driver.

4. The driver system according to claim 1, characterized in that, The abutment portion limits the first copper busbar to prevent the first driver from being electrically connected downstream of the second driver.

5. The driver system according to claim 1, characterized in that, The mating part is groove-shaped, and the top abutment part is protruding; The abutment portion is housed within the mating portion to allow the second driver to be electrically connected to the first driver.

6. The driver system according to claim 1, characterized in that, When the first copper busbar rotates to a first locking position, the top part limits the first copper busbar to reach the first locking position; When the second copper busbar rotates to a second locking position, the top abutment allows the second copper busbar to reach the second locking position.

7. The driver system according to claim 1, characterized in that, The second copper busbar lock also includes: A second inner fixing member is configured to pass through the second copper busbar base and be electrically connected to the second driver; At least the portion of the second inner fastener that is electrically connected to the second actuator is bendable.

8. The driver system according to claim 1, characterized in that, The first copper busbar base also includes: At least two of the first copper busbars; and A first step portion having at least two step surfaces in the vertical direction, wherein at least two first copper busbars are respectively placed on at least two of the step surfaces.

9. The driver system according to claim 1, characterized in that, The second copper busbar base also includes: At least two of the second copper busbars; and A second step portion having at least two step surfaces in the vertical direction, wherein at least two second copper busbars are respectively placed on at least two of the step surfaces.

10. A copper busbar locking device, characterized in that, The drivers integrated into a common DC bus driver system include: A copper busbar base, including a top abutment; and A copper busbar component is disposed on the copper busbar base, including a mating part; The mating part houses the top abutment to allow for the assembly of the drives.

Images