Energy storage lithium battery pack rack type case convenient and fast to install

Abstract

The invention discloses an energy storage lithium battery pack rack-mounted case convenient to install, and relates to the technical field of battery packaging cases, the energy storage lithium battery pack rack-mounted case comprises a case frame, a supporting plate is fixedly connected in the case frame, a lithium battery pack body is arranged at the top of the supporting plate, and a clamping mechanism is arranged in the case frame; a machine box cover is arranged on the outer top of the machine box frame, a pressing mechanism is arranged on the top of the inner side of the machine box cover, a mounting mechanism is arranged on the pressing mechanism, a clamping mechanism comprises a rotating rod, the rotating rod is rotationally connected to the bottom of the inner side of the machine box frame, and the top end of the rotating rod is rotationally connected with a supporting plate. According to the energy storage lithium battery pack rack type case convenient to install, by arranging the clamping mechanism and the pressing mechanism, a lithium battery pack body can be conveniently installed and fixed, operation is convenient and fast, the problem that in the prior art, a lithium battery pack is inconvenient to install and disassemble, and consequently use is inconvenient is solved, and the efficiency of workers is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packaging chassis, and specifically relates to a convenient installation type energy storage lithium battery pack rack-mounted chassis. Background Art

[0002] In recent years, projects such as wind and light energy storage and peak shaving energy storage have been widely applied in many fields such as power plants, industry, agriculture, transportation, petrochemical industry, mines, mountainous areas, and plains. With the country's governance of environmental pollution, the application of new energy, especially lithium batteries, has become more and more extensive.

[0003] The environmentally friendly and pollution-free lithium iron phosphate battery has been increasingly widely used whether as a power battery for electric vehicles or as an energy storage battery for new energy energy storage. In order to ensure the structural stability of the energy storage battery and facilitate management and maintenance, a rack-mounted chassis for an energy storage lithium battery pack is very necessary.

[0004] However, the existing devices have the following deficiencies during use: In the prior art, when the lithium battery pack is installed inside the chassis, it is connected to the chassis through a plurality of fixing parts, making the installation and disassembly of the lithium battery pack inconvenient, resulting in inconvenient use and affecting the efficiency of the staff.

[0005] Therefore, we propose a convenient installation type energy storage lithium battery pack rack-mounted chassis to solve the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a convenient installation type energy storage lithium battery pack rack-mounted chassis. By setting a clamping mechanism and a pressing mechanism, through the combined cooperation among a rotating rod, a rotating shaft, a driving bevel gear, a driven bevel gear, a limiting groove, a moving plate, a clamping plate, a rack, and a first spur gear, it is convenient to clamp and fix the lithium battery pack body. Through the combined cooperation among a screw rod, a fixing rod, a second spur gear, a first moving block, and a pressing plate, it is convenient to press the lithium battery pack body, so as to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A convenient installation type energy storage lithium battery pack rack-mounted chassis, a convenient installation type energy storage lithium battery pack rack-mounted chassis, including a chassis frame, a support plate is fixedly connected inside the chassis frame, a lithium battery pack body is arranged on the top of the support plate, a clamping mechanism is arranged inside the chassis frame, a chassis cover is arranged on the outer top of the chassis frame, a pressing mechanism is arranged on the inner top of the chassis cover, and an installation mechanism is arranged on the pressing mechanism. The clamping mechanism includes a rotating rod, the rotating rod is rotatably connected to the inner bottom of the chassis frame, the top end of the rotating rod is rotatably connected to the support plate, a rotating shaft is connected to the inside of the chassis frame through a bearing, one end of the rotating shaft is fixedly connected with a driving bevel gear, a driven bevel gear is fixedly sleeved on the outer surface of the rotating rod, the driving bevel gear is meshed with the driven bevel gear, two limiting grooves are opened on the top of the support plate, two moving plates are arranged in the two limiting grooves, two clamping plates are fixedly connected to one side of the two moving plates, two racks are fixedly installed on one side of the two moving plates, a first spur gear is fixedly sleeved on the outer surface of the rotating rod, and the first spur gear is meshed with the two racks. The pressing mechanism includes two screw rods, the two screw rods are connected to the inner top of the chassis cover through bearings, two fixed rods are fixedly connected to the inner top of the chassis cover, two second spur gears are fixedly sleeved on the outer surfaces of the two screw rods, the two second spur gears are meshed with each other, a first moving block is sleeved on the outer surfaces of one of the screw rods and one of the fixed rods, and a pressing plate is arranged at the bottom of the first moving block.

[0008] Preferably, the installation mechanism includes a second moving block, and the second moving block is sleeved on the outer surfaces of the other screw rod and the other fixed rod.

[0009] Preferably, two sliding grooves are opened on the inner top of the chassis cover, two sliding plates are slidably connected in the two sliding grooves, two first U-shaped blocks are fixedly connected to both sides of the second moving block, two second U-shaped blocks are fixedly connected to one side of the two sliding plates, and two connecting rods are rotatably connected to the inner sides of the two first U-shaped blocks and the two second U-shaped blocks.

[0010] Preferably, two limiting rods are fixedly connected to one side of the two sliding plates, and two limiting holes are opened on the inner side of the chassis cover.

[0011] Preferably, four movable rods are movably inserted at the bottom of the first moving block, the pressing plate is fixedly connected to the bottom ends of the four movable rods, and four return springs are sleeved on the outer surfaces of the four movable rods.

[0012] Preferably, four first anti-disengagement plates are fixedly connected to the top ends of the four movable rods, and two second anti-disengagement plates are fixedly connected to the bottom ends of the two fixed rods.

[0013] Preferably, a first rotating handle is fixedly installed at the top end of the other screw rod, and a support frame is fixedly connected to the top of the chassis cover. The smooth end of one of the screw rods is rotatably connected to the inner top of the support frame.

[0014] Preferably, two sliding rails are fixedly installed at the inner bottom of the chassis frame. Two sliders are slidably connected to the two sliding rails, and the two moving plates are fixedly connected to the tops of the two sliders.

[0015] Preferably, a support cylinder is fixedly connected to the inner bottom of the chassis frame, and the support cylinder is sleeved on the outer surface of the rotating shaft. A second rotating handle is fixedly installed at one end of the rotating shaft.

[0016] Preferably, a heat dissipation slot, a power management module installation hole, a wire harness hole, and a current terminal installation hole are formed on one side of the chassis frame, and a fan installation hole is formed on the other side of the chassis frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the clamping mechanism and the pressing mechanism, through the combined cooperation among the rotating rod, the rotating shaft, the driving bevel gear, the driven bevel gear, the limiting groove, the moving plate, the clamping plate, the rack, and the first spur gear, the effect of clamping and fixing the lithium battery pack body is achieved. Through the combined cooperation among the screw rod, the fixing rod, the second spur gear, the first moving block, and the pressing plate, the effect of pressing the lithium battery pack body is achieved, which is convenient for installing and fixing the lithium battery pack body, with convenient operation, solves the problem in the prior art that the installation and disassembly of the lithium battery pack are inconvenient, resulting in inconvenient use, and improves the efficiency of the staff.

[0018] 2. By setting the pressing mechanism and the installation mechanism, under the coordination of the linkage structure, the two sliding plates can be driven to slide relatively and move away from each other in the two sliding grooves, which is convenient for limiting and fixing the chassis cover and releasing the restriction, thus achieving the effect of facilitating the installation and disassembly of the chassis cover and improving the practicability of the device.

[0019] 3. There is a special position for installing the power management module on the chassis frame of the present invention, as well as a wire harness hole dedicated for the power management module wire harness to enter the interior of the chassis frame, which is convenient to use. At the same time, a heat dissipation slot is provided on the chassis frame, and in cooperation with the fan installed in the fan installation hole, it has the effect of facilitating heat dissipation, and can effectively protect the safety of the lithium battery pack body during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional view of the main structure of a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 2 is a three-dimensional view of the right side structure of a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 3 This is a three-dimensional structure diagram of the chassis cover in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 4 This is a partially sectional three-dimensional structure diagram of the chassis frame in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 5 This is a three-dimensional structure diagram of the chassis frame in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 6 This is a three-dimensional structure diagram of the first straight gear in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 7 This is a three-dimensional structure diagram of the first moving block in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention; Figure 8 This is a three-dimensional structure diagram of the second moving block in a convenient installation type energy storage lithium battery pack rack-mounted chassis of the present invention.

[0021] In the figure: 1. Chassis frame; 2. Support plate; 3. Lithium battery pack body; 4. Clamping mechanism; 401. Rotating rod; 402. Rotating shaft; 403. Driving bevel gear; 404. Driven bevel gear; 405. Limiting groove; 406. Moving plate; 407. Clamping plate; 408. Rack; 409. First straight gear; 410. Slide rail; 411. Slide block; 412. Support cylinder; 413. Second turning handle; 5. Chassis cover; 6. Pressing mechanism; 601. Screw rod; 602. Fixed rod; 603. Second straight gear; 604. First moving block; 605. Pressing plate; 606. Moving rod; 607. Return spring; 608. First anti-disengagement plate; 609. Second anti-disengagement plate; 610. First turning handle; 611. Support frame; 7. Installation mechanism; 701. Second moving block; 702. Chute; 703. Slide plate; 704. First U-shaped block; 705. Second U-shaped block; 706. Connecting rod; 707. Limiting rod; 708. Limiting hole; 8. Heat dissipation slot; 9. Power management module installation hole; 10. Wiring harness hole; 11. Current terminal installation hole; 12. Fan installation hole. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Such as Figures 1 - 8As shown in the figure, the present invention provides a technical solution: a convenient installation type energy storage lithium battery pack rack-mounted chassis, including a chassis frame 1, a support plate 2 is fixedly connected inside the chassis frame 1, a lithium battery pack body 3 is arranged on the top of the support plate 2, a clamping mechanism 4 is arranged inside the chassis frame 1, a chassis cover 5 is arranged on the outer top of the chassis frame 1, a pressing mechanism 6 is arranged on the inner top of the chassis cover 5, and an installation mechanism 7 is arranged on the pressing mechanism 6. The clamping mechanism 4 includes a rotating rod 401, the rotating rod 401 is rotatably connected to the inner bottom of the chassis frame 1, the top end of the rotating rod 401 is rotatably connected to the support plate 2, a rotating shaft 402 is connected to the inside of the chassis frame 1 through a bearing, one end of the rotating shaft 402 is fixedly connected with a driving bevel gear 403, a driven bevel gear 404 is fixedly sleeved on the outer surface of the rotating rod 401, the driving bevel gear 403 is meshed with the driven bevel gear 404, two limiting grooves 405 are opened on the top of the support plate 2, two moving plates 406 are arranged in the two limiting grooves 405, two clamping plates 407 are fixedly connected to one side of the two moving plates 406, two racks 408 are fixedly installed on one side of the two moving plates 406, a first straight gear 409 is fixedly sleeved on the outer surface of the rotating rod 401, and the first straight gear 409 is meshed with the two racks 408. The pressing mechanism 6 includes two screw rods 601, the two screw rods 601 are connected to the inner top of the chassis cover 5 through bearings, two fixed rods 602 are fixedly connected to the inner top of the chassis cover 5, two second straight gears 603 are fixedly sleeved on the outer surfaces of the two screw rods 601, the two second straight gears 603 are meshed with each other, a first moving block 604 is sleeved on the outer surfaces of one of the screw rods 601 and one of the fixed rods 602, and a pressing plate 605 is arranged at the bottom of the first moving block 604.

[0024] As Figure 7 and Figure 8 shown, the installation mechanism 7 includes a second moving block 701, the second moving block 701 is sleeved on the outer surfaces of the other screw rod 601 and the other fixed rod 602, and the other fixed rod 602 has a limiting effect on the second moving block 701. When the other screw rod 601 rotates, the second moving block 701 can be driven to move up and down.

[0025] As Figure 8 shown, two sliding grooves 702 are opened on the inner top of the chassis cover 5, two sliding plates 703 are slidably connected in the two sliding grooves 702, two first U-shaped blocks 704 are fixedly connected to both sides of the second moving block 701, two second U-shaped blocks 705 are fixedly connected to one side of the two sliding plates 703, and two connecting rods 706 are rotatably connected to the inner sides of the two first U-shaped blocks 704 and the two second U-shaped blocks 705. When the second moving block 701 moves up and down, the two sliding plates 703 can be driven to slide relatively and move away from each other in the two sliding grooves 702 under the cooperation of the two first U-shaped blocks 704, the two second U-shaped blocks 705 and the two connecting rods 706.

[0026] As Figure 8 shown, two limiting rods 707 are fixedly connected to one side of two sliding plates 703, and two limiting holes 708 are formed in the inner side of the chassis cover 5. When the two sliding plates 703 slide relative to each other and move away from each other in the two sliding grooves 702, the two limiting rods 707 can be driven to move relative to each other and move away from each other, so as to limit and fix the chassis cover 5 and release the limitation, which is convenient for installing and disassembling the chassis cover 5.

[0027] As shown in FIG. 7, four movable rods 606 are movably inserted into the bottom of the first movable block 604, the pressing plate 605 is fixedly connected to the bottom ends of the four movable rods 606, and four return springs 607 are sleeved on the outer surfaces of the four movable rods 606. Through the cooperation between the four movable rods 606 and the four return springs 607, the elastic potential energy of the four return springs 607 is utilized to make the pressing plate 605 always keep in close contact with the lithium battery pack body 3, improving the stability after the installation of the lithium battery pack body 3.

[0028] As Figure 7 and Figure 8 shown, four first anti-detachment plates 608 are fixedly connected to the top ends of the four movable rods 606, and two second anti-detachment plates 609 are fixedly connected to the bottom ends of the two fixed rods 602. By providing the four first anti-detachment plates 608 to limit the four movable rods 606 and providing the two second anti-detachment plates 609 to limit the two fixed rods 602, the effect of preventing the fixed rods 602 and the movable rods 606 from falling off is achieved.

[0029] As Figure 7 shown, a first turning handle 610 is fixedly installed at the top end of another screw rod 601, and a support frame 611 is fixedly connected to the top of the chassis cover 5. The smooth end of one of the screw rods 601 is rotatably connected to the inner top of the support frame 611. By providing the first turning handle 610, it is convenient for the operator to rotate another screw rod 601 through the first turning handle 610, improving the convenience. The support frame 611 is provided to support one of the screw rods 601, improving the stability of one of the screw rods 601 during rotation.

[0030] As Figure 6 shown, two slide rails 410 are fixedly installed at the inner bottom of the chassis frame 1, two sliders 411 are slidably connected to the two slide rails 410, and two moving plates 406 are fixedly connected to the tops of the two sliders 411. When the two moving plates 406 move, they can drive the two sliders 411 to slide synchronously on the two slide rails 410, improving the stability of the two moving plates 406 during movement.

[0031] As Figure 6As shown, a support cylinder 412 is fixedly connected to the inner bottom of the chassis frame 1, and the support cylinder 412 is sleeved on the outer surface of the rotating shaft 402. One end of the rotating shaft 402 is fixedly installed with a second rotating handle 413. By setting the second rotating handle 413, it is convenient for the operator to rotate the rotating rod 401 through the second rotating handle 413, improving the convenience. The set support cylinder 412 plays a supporting role for the rotating rod 401, enabling the rotating rod 401 to remain stable during rotation.

[0032] As Figure 1 and Figure 2 As shown, a heat dissipation slot 8, a power management module installation hole 9, a wire harness hole 10, and a current terminal installation hole 11 are provided on one side of the chassis frame 1, and a fan installation hole 12 is provided on the other side of the chassis frame 1. A fan is installed through the fan installation hole 12, which, in cooperation with the heat dissipation slot 8, achieves a good heat dissipation effect. By setting the power management module installation hole 9 and the wire harness hole 10, it is convenient to install the power management module. The current terminal installation hole 11 is provided to facilitate the installation of the current terminal.

[0033] Usage method and working principle of this device: When in use, first place the lithium battery pack body 3 on the support plate 2 and between the two clamping plates 407. Then rotate the second rotating handle 413, causing the second rotating handle 413 to drive the rotating shaft 401 to rotate. Since the driving bevel gear 403 is meshed with the driven bevel gear 404, the rotating rod 402 drives the first straight gear 409 to rotate. Since the first straight gear 409 is meshed with the two racks 408, the two moving plates 406 drive the two clamping plates 407 to move relatively. The two moving plates 406 drive the two sliders 411 to slide synchronously on the two slide rails 410, thereby clamping and fixing the lithium battery pack body 3. Immediately afterwards, cover the chassis cover 5 on the top of the chassis frame 1. Then rotate the first rotating handle 610, causing the first rotating handle 610 to drive another screw rod 601 to rotate. Another fixed rod 602 limits the second moving block 701, causing the other screw rod 601 to drive the second moving block 701 to move upward. Under the action of the two first U-shaped blocks 704, the two second U-shaped blocks 705 and the two connecting rods 706, the two sliding plates 703 are driven to move away from each other in the two sliding grooves 702. The two sliding plates 703 drive the two limiting rods 707 to move away from each other and squeeze into the two limiting holes 708, thereby limiting and fixing the chassis cover 5 and completing the installation of the chassis cover 5. At the same time, since the two second straight gears 603 are meshed, when the other screw rod 601 rotates, it drives one of the screw rods 601 to rotate synchronously, and the rotating directions of one of the screw rods 601 and the other screw rod 601 are opposite. At the same time, one of the fixed rods 602 limits one of the screw rods 601, causing one of the screw rods 601 to drive the first moving block 604 to move downward, thereby driving the pressing plate 605 to move downward. When the pressing plate 605 contacts the lithium battery pack body 3, the first moving block 604 continues to move downward, and the return spring 607 starts to contract under the extrusion of the first moving block 604, thereby pressing the lithium battery pack body 3 and further installing and fixing the lithium battery pack body 3. Finally, by setting the power management module mounting hole 9 and the wire harness hole 10 for installing the power management module, and setting the fan mounting hole 12 and the current terminal mounting hole 11 for installing the fan and the current terminal respectively. When it is necessary to disassemble the lithium battery pack body 3, reverse the first rotating handle 610, causing the two sliding plates 703 to drive the two limiting rods 707 to move closer to each other and separate from the two limiting holes 708, releasing the restriction on the chassis cover 5. At the same time, the first moving block 604 drives the pressing plate 605 to move upward. Then reverse the second rotating handle 413, causing the two moving plates 406 to drive the two clamping plates 407 to move away from each other, releasing the restriction on the lithium battery pack body 3. Then remove the chassis cover 5 from the chassis frame 1 and take out the lithium battery pack body 3.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A convenient installation type energy storage lithium battery pack rack-mounted chassis, characterized in that: It includes a chassis frame (1), a support plate (2) is fixedly connected inside the chassis frame (1), a lithium battery pack body (3) is arranged on the top of the support plate (2), a clamping mechanism (4) is arranged inside the chassis frame (1), a chassis cover (5) is arranged on the outer top of the chassis frame (1), a pressing mechanism (6) is arranged on the inner top of the chassis cover (5), an installation mechanism (7) is arranged on the pressing mechanism (6), the clamping mechanism (4) includes a rotating rod (401), the rotating rod (401) is rotatably connected to the inner bottom of the chassis frame (1), the top end of the rotating rod (401) is rotatably connected to the support plate (2), a rotating shaft (402) is connected to the inside of the chassis frame (1) through a bearing, one end of the rotating shaft (402) is fixedly connected with a driving bevel gear (403), a driven bevel gear (404) is fixedly sleeved on the outer surface of the rotating rod (401), the driving bevel gear (403) is meshed with the driven bevel gear (404), two limiting grooves (405) are formed on the top of the support plate (2), two moving plates (406) are arranged in the two limiting grooves (405), two clamping plates (407) are fixedly connected to one side of the two moving plates (406), two racks (408) are fixedly installed on one side of the two moving plates (406), a first straight gear (409) is fixedly sleeved on the outer surface of the rotating rod (401), the first straight gear (409) is meshed with the two racks (408), the pressing mechanism (6) includes two screw rods (601), the two screw rods (601) are connected to the inner top of the chassis cover (5) through bearings, two fixing rods (602) are fixedly connected to the inner top of the chassis cover (5), two second straight gears (603) are fixedly sleeved on the outer surfaces of the two screw rods (601), the two second straight gears (603) are meshed with each other, a first moving block (604) is sleeved on the outer surfaces of one of the screw rods (601) and one of the fixing rods (602), and a pressing plate (605) is arranged at the bottom of the first moving block (604).

2. The convenient installation type energy storage lithium battery pack rack-mounted chassis according to claim 1, wherein: The installation mechanism (7) includes a second moving block (701), and the second moving block (701) is sleeved on the outer surfaces of the other screw rod (601) and the other fixing rod (602).

3. The convenient installation type energy storage lithium battery pack rack-mounted chassis according to claim 2, characterized in that: Two sliding grooves (702) are formed on the inner top of the chassis cover (5), two sliding plates (703) are slidably connected in the two sliding grooves (702), two first U-shaped blocks (704) are fixedly connected to both sides of the second moving block (701), two second U-shaped blocks (705) are fixedly connected to one side of the two sliding plates (703), and two connecting rods (706) are rotatably connected to the inner sides of the two first U-shaped blocks (704) and the two second U-shaped blocks (705).

4. The rack-mounted chassis of a convenient installation type energy storage lithium battery pack according to claim 3, characterized in that: Two limiting rods (707) are fixedly connected to one side of the two sliding plates (703), and two limiting holes (708) are formed in the inner side of the chassis cover (5).

5. The rack-mounted chassis of a convenient installation type energy storage lithium battery pack according to claim 1, characterized in that: Four movable rods (606) are movably inserted into the bottom of the first movable block (604), the pressing plate (605) is fixedly connected to the bottom ends of the four movable rods (606), and four return springs (607) are sleeved on the outer surfaces of the four movable rods (606).

6. The convenient installation type energy storage lithium battery pack rack-mounted chassis according to claim 5, characterized in that: Four first anti - detachment plates (608) are fixedly connected to the top ends of the four movable rods (606), and two second anti - detachment plates (609) are fixedly connected to the bottom ends of the two fixed rods (602).

7. The rack-mounted chassis of a convenient installation type energy storage lithium battery pack according to claim 2, characterized in that: A first turning handle (610) is fixedly installed at the top end of the other screw rod (601), a support frame (611) is fixedly connected to the top of the chassis cover (5), and the smooth end of one of the screw rods (601) is rotatably connected to the inner top of the support frame (611).

8. The convenient installation type energy storage lithium battery pack rack-mounted chassis according to claim 1, wherein: Two slide rails (410) are fixedly installed on the inner bottom of the chassis frame (1), two sliders (411) are slidably connected to the two slide rails (410), and two moving plates (406) are fixedly connected to the tops of the two sliders (411).

9. The convenient installation type energy storage lithium battery pack rack-mounted chassis according to claim 1, wherein: A support cylinder (412) is fixedly connected to the inner bottom of the chassis frame (1), and the support cylinder (412) is sleeved on the outer surface of the rotating shaft (402). One end of the rotating shaft (402) is fixedly installed with a second turning handle (413).

10. The rack-mounted chassis of a convenient installation type energy storage lithium battery pack according to claim 1, wherein: A heat dissipation slot (8), a power management module installation hole (9), a wire harness hole (10), and a current terminal installation hole (11) are formed on one side of the chassis frame (1), and a fan installation hole (12) is formed on the other side of the chassis frame (1).

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