100% low floor trolley car battery assembly

A technology for trams and batteries, applied in the field of rail transit, can solve the problems of tight roof equipment layout space and limited space under the car, and achieve the effects of easy replacement, enhanced safety, and high energy density.

Pending Publication Date: 2018-11-06

CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0003] Due to the limited space under the 100% low-floor tram, the battery assembly and most of th...

Method used

[0054] The first fuse 24 of the battery pack and the second fuse 25 of the traction converter are ...

Abstract

A 100% low floor trolley car battery assembly comprises a storage battery pack box and an isolation protection device box, a battery pack case door with case door handle is arranged at the top of thecase body of the battery pack, a battery pack in which a plurality of battery cells are arranged in series in a row or column, a separator is arranged around the battery pack and a fixing bracket is arranged on the inner wall of the battery pack box to fix the separator, at the side of the case body of the isolation protection device, an isolation protection case door with a case door handle is arranged. After the positive and negative cable of the battery pack enter the case body of the isolation protection device, a fuse 1 for charge-discharge overcurrent protection, a manual switch and a fuse 2 for discharge overcurrent protection are installed on the line, and then the cable is led out. The invention has the advantages of high integration degree, small volume and light weight, and meets the requirements of lightweight and space limitation. The battery isolation and protection device and the battery pack are arranged in different cavities, which enhances the safety and also facilitates the maintenance and replacement of the battery assembly.

Application Domain

Battery isolationInsulated cables +4

Technology Topic

EngineeringElectrical and Electronics engineering +4

Image

Examples

Experimental program(1)

Example Embodiment

[0048] Examples:

[0049] Such as figure 1 , 2 , 3, 4, a 100% low-floor tram battery assembly, including a battery pack box 1 and an isolation protection device box 2 connected as a whole. The top of the battery pack box 1 is provided with a battery pack box door 11 with a door handle 14, and a series of battery packs 5 formed by a number of battery cells are placed in rows and rows. A partition 53 is arranged around the battery pack 5 and placed on the battery pack. The inner wall of the box 1 is provided with a top surface fixing bracket 51 and a side fixing bracket 52. The top surface fixing bracket 51 is directly pressed on the top of the battery pack 1 to fix the vertical position of the battery pack 5; the side fixing bracket 52 connects the battery pack through the partition 53 The horizontal position of 5 is fixed. An isolation protection box door 21 with a box door handle 14 is provided on the side of the isolation protection device box 2.

[0050] After the positive and negative cables 22 of the battery pack 5 enter the isolation protection device box 2, a fuse 24 for charging and discharging overcurrent protection of the battery pack 5 and a manual switch 23 are installed on the line, as well as a manual switch 23 for protecting the battery pack. 5. Fuse two 25 for discharge overcurrent protection, and then lead the cable 22 from the side wall of the isolation protection device box 2. A fixed support 3 is respectively provided around the bottom of the battery pack box 1 and the isolation protection device box 2. The electrical principle between the manual switch 23 and the two fuses and the cable 22 is as follows Figure 8 Shown.

[0051] Such as image 3 As shown, since the battery assembly adopts a split-cavity structure arrangement, the fuse and the battery are separated into two different cavities through the partition 53. To ensure the independence between the cavities, the lead wire of the battery pack 5 The cable 22 adopts a waterproof sealing gland.

[0052] Such as Picture 9 As shown, under the battery operating condition, the positive cable 22 of the battery pack 5 is connected to the upper end of the fuse 24 through the partition 53, and the lower end of the fuse 24 is connected to the point 2 of the manual switch 23. Point 1 is connected to the output positive; the negative cable 22 of the battery pack 5 is connected to the point 4 of the manual switch 23 through the partition 53, and is connected to the output negative through the point 3 of the manual switch 23, between the output positive and the output negative Connect the load to form a closed loop.

[0053] Under normal operating conditions, the traction converter supplies power to the vehicle load. The positive cable 22 of the traction converter is connected to the upper end of the second fuse 25, and the lower end of the second fuse 25 is connected to the load; The negative cable is connected to the load to form a closed loop.

[0054] The fuse one 24 of the battery pack and the fuse two 25 of the traction converter are concentrated in the isolation protection box to facilitate the maintenance and replacement of the fuse.

[0055] The isolation protection device box 2 is provided with a mounting frame, and the manual switch 23, the first fuse 24, and the second fuse 25 are respectively detachably mounted on the mounting frame.

[0056] The battery pack box 1 is also provided with wire tie plates 17 on three sides above the battery pack 5 respectively. The wire tie plates 17 are detachably installed on the fixing brackets on the inner wall of the battery pack box 1 to face the front and back of the battery pack 5. The negative cable 22 and the ground wire are routed and fixed.

[0057] A temperature sensor 16 is provided at the battery cell in the center of the battery pack 5 and the collected data is led out of the battery pack box 1.

[0058] A number of ground blocks 15 are provided on the battery pack box 1 and the isolation protection device box 2.

[0059] Such as Figure 5 As shown, the top of the battery pack box 1 is provided with a pressure discharge joint 12 for discharging the gas in the box, and the bottom is provided with a condensation drain valve 18 for discharging the condensed water in the box.

[0060] When the positive and negative cables 22 of the battery pack 5 enter the isolation protection device box 2, the independence between the battery pack box 1 and the isolation protection device box 2 is ensured by installing cable waterproof joints on the separator. And tightness.

[0061] Such as Image 6 As shown, the four corners of the battery pack box door 11 and the isolation protection box door 21 are provided with compression door locks 13, and the four sides are provided with sealing rubber strips 13B and fixed thin plates 13A.

[0062] Such as Figure 7 As shown, it also includes three guide rails 4 fixedly arranged on the roof. Two guide rails 4 are arranged longitudinally below the battery pack box 1 and each corresponds to a fixed support 3, and one guide rail 4 is arranged transversely below the isolation protection device box 2 Corresponding to two fixed supports 3, the fixed supports 3 are locked on the guide rail 4 by fasteners. The guide rail 4 is provided with an inverted T-shaped chute, the lower end of the inverted T-shaped fastening slider 34 is embedded in the inverted T-shaped chute, and the upper end passes upward through the tightening seat 33 and the fixed support 3, and then screwed on the upper end. The upper expansion sleeve 32 and the nut 31 are thus locked.

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100% low floor trolley car battery assembly

A technology for trams and batteries, applied in the field of rail transit, can solve the problems of tight roof equipment layout space and limited space under the car, and achieve the effects of easy replacement, enhanced safety, and high energy density.

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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