KPX Battery-Powered Electric Flat Car for Steel Plants
Battery-Powered Electric Flat Car
Model: KPX Series; Load Capacity: 6–100 t; Power Supply: Battery; Travel Speed: 20–30 m/min.
The KPX Series battery-powered electric flat car is a mature product from Kelude Heavy Industry. It uses an onboard battery pack to power a DC motor, eliminating the need for track-side power supply or trailing cables. The key advantage of battery power is maneuverability and flexibility — the car can run freely on curved and switch tracks with no travel distance limitation, requires no insulation on the rails, and is quick and economical to install.
The KPX Series is ideal for applications without fixed power supply lines, such as inter-workshop material transfer, warehouse and yard distribution, and flexible production lines where transport routes change frequently. The control system can be optionally equipped with remote control for safe and convenient operation.
Product Introduction
The KPX Series battery-powered electric flat car is powered entirely by an onboard battery pack that supplies DC power directly to the traction motor. Compared with AC motors, DC motors offer greater resistance to damage, higher starting torque, and stronger overload capacity. A full charge takes 6–8 hours and provides 8–12 hours of continuous operation (depending on load and travel distance), making the car suitable for single-shift or double-shift operations.
Product Images
Product Features
- Maneuverable and Flexible: Runs on curved and switch tracks with no travel distance limitation; no insulation required on rails — quick and economical installation.
- DC Motor Drive: High starting torque, strong overload capacity, and resistance to damage — ideal for frequent start-stop operations.
- No External Power Supply: Free from the constraints of cables and conductor rails; suitable for workshops and yards without fixed power supply lines.
- Low Noise, Zero Emissions: Battery power delivers smooth, quiet operation with no exhaust emissions — ideal for enclosed indoor environments.
- High Safety: Low-voltage control circuit with undervoltage protection, overcurrent protection, and emergency stop for safe, reliable operation.
Working Principle
The KPX Series battery-powered electric flat car works as follows: the battery pack (lead-acid or maintenance-free) is mounted on the car chassis and supplies DC power through a DC motor controller to the traction motor. The controller regulates motor speed and direction based on operating commands (wired or wireless remote), and the motor drives the wheels through a gearbox for smooth travel.
Recharging is done via an external smart charger — simply plug the charging connector into the car's charging socket. The charging process is fully automatic: it shuts off when the battery is full, with no manual supervision required. Standard charging time is 6–8 hours, providing 8–12 hours of runtime (depending on load and duty cycle).
Structural Composition
The KPX Series electric flat car consists of the following core components:
Frame: Welded from Q235B steel plate, annealed to relieve internal stress. The main girder uses a box-section design with load-bearing capacity optimized through FEA.
Battery Pack: Lead-acid traction batteries or maintenance-free batteries, sized according to the car's load capacity. A dedicated battery compartment is provided for easy hoisting and replacement. A smart charger automatically manages the charging process.
Drive System: DC series-wound motor with high starting torque and strong overload capacity. The gearbox uses worm gear transmission for smooth, low-noise operation. Dual-motor dual-drive configuration is available.
Electrical Control System: DC motor controller with stepless speed control, undervoltage protection, and overcurrent protection. Standard configuration includes a wired control pendant; wireless remote control is available as an option.
Wheel Assembly: Cast steel wheels with induction-hardened tread surfaces (HRC45–50). Spherical roller bearings automatically compensate for installation misalignment.
Technical Parameters
| Parameter | KPX 5-2 | KPX 10-2 | KPX 5-1 | KPX 10-1 | KPX 20-1 | KPX 30-1 | KPX 50-1 | KPX 75-1 | KPX 100-1 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Rated Load Capacity(t) | 5 | 10 | 5 | 10 | 20 | 30 | 50 | 75 | 100 | |
| Table Dimensions (mm) | Length | 3200 | 3600 | 3200 | 3600 | 4000 | 4500 | 5000 | 5800 | 6500 |
| Width | 1600 | 1600 | 2000 | 2000 | 2200 | 2200 | 2500 | 2500 | 2800 | |
| Height | 550 | 550 | 500 | 550 | 650 | 650 | 700 | 850 | 900 | |
| Travel Speed(m/min) | 20-25 | 18-22 | ||||||||
| motor power(kw) | 2.5 | 3.0 | 5 | 6.3 | 10 | |||||
| Battery | Model | DG250 | ||||||||
| Specification | 212×140×335 | |||||||||
| Voltage | 2V/pcs | |||||||||
| Operation Voltage | 40V | 48V | 78V | |||||||
| Dead Weight(t) | 3.4 | 3.9 | 3.95 | 4.38 | 5.3 | 6.7 | 8.2 | 11.2 | 14.3 | |
| Gauge(mm) | 762 | 1435 | ||||||||
Why Choose Kelude Heavy Industry
- 17 Years of Industry Experience: Kelude Heavy Industry specializes in the R&D and manufacturing of electric flat cars. Our KPX series products have been widely deployed in workshops, warehouses, and storage yards across domestic and international projects.
- Flexible Customization: Table dimensions, rail gauge, load capacity, and battery capacity can all be tailored to your specific operating conditions. Remote control and automation interfaces are available as options.
- Proven Battery Solutions: Choose between lead-acid and maintenance-free battery options, managed by an intelligent charger for extended runtime.
- Comprehensive After-Sales Service: A 24-hour national response hotline, with on-site installation guidance, operator training, and periodic inspections.
Service & Support
Henan Kelude Heavy Industry Co., Ltd. provides full life-cycle support for the KPX series battery-powered electric flat cars: pre-sales solution design (recommending load capacity and battery capacity based on your operating conditions), in-sales installation & commissioning (technical staff on-site to guide installation and trial runs), and after-sales warranty (12-month warranty on the complete machine and 12 months on the battery). Spare parts are available for long-term supply, and annual maintenance agreements can be arranged.
Contact: 13903802779
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FAQ
Q: How long is the runtime of the KPX series battery-powered electric flat car?
A: Under standard configuration, the continuous runtime at full load is approximately 8-12 hours (depending on load and operating frequency). Battery charging takes 6-8 hours, and we recommend charging during breaks. A fast charger is available as an option, reducing charging time to 3-4 hours.
Q: Can the KPX battery flat car travel on curved and switch tracks?
A: Yes. This is the key advantage of the KPX battery flat car over other power supply methods like KPC/KPT. Since battery power requires no external power supply line, the flat car can run freely on curves and switches without insulation requirements for the rail installation, making construction easier and more cost-effective. However, high-speed travel on tight curves (R<3m) is not recommended.
Q: What are the daily maintenance requirements for the battery?
A: For lead-acid batteries, check the electrolyte level monthly and top up with distilled water when low. Keep the battery surface clean and dry. If the car is idle for extended periods, recharge the battery once a month. Maintenance-free batteries require no electrolyte topping up — just keep them clean. An annual battery capacity test is recommended.
Q: Can the KPX series electric flat car be operated by remote control?
A: Yes. The standard configuration includes a tethered control pendant, with wireless remote control (100-200m range) available as an option. The KPX DC motor controller can integrate a PLC interface for multi-speed control, automatic positioning, and synchronized operation with overhead cranes/AGVs. The control system complies with JB/T 6127-2010 and GB 5226.1-2019 standards.
Q: How do I choose between the KPX battery flat car and the KPC conductor rail flat car?
A: The KPX battery flat car is ideal for applications without fixed power supply lines, where travel on curves/switches is required, or where the travel route needs to be flexible — but it requires downtime for charging. The KPC conductor rail flat car suits fixed-route, long-distance continuous operations with no charging wait, but requires trench construction. In short: choose KPX for curved tracks, and KPC for fixed long-distance routes.
