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GWL Cell Performance Monitor for LiFePO4 and LTO cells

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5 125 CZK 4 236 CZK without VAT
Common price: 5 510 CZK

To send: > 10 pcs

Code: SOPGWL0086 PN: EX-CPM Warranty: 26 months
GWL/POWER CPM1 The Cell Performance Monitor (GWL CPM) is an easy-to-use and effective solution for the protection of the LiFePO4 and LTO batteries from excessive discharge or overcharge. The key features: When... more
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GWL/POWER CPM1

The Cell Performance Monitor (GWL CPM) is an easy-to-use and effective solution for the protection of the LiFePO4 and LTO batteries from excessive discharge or overcharge.

The key features:

  • When exceeding the user-adjustable minimum or maximum of any cell, CPM module closes or opens the output contacts for the relay coils.
  • It brings the lowest and highest cell voltages of the cells in pack to separate outputs (for monitoring measurements or for connection of the LED display or the communication module).
  • The multi-colour LEDs indicate the highest and lowest voltage cells and the operating status of the module.
  • It has very low power consumption and a built-in function of battery emergency disconnection from the powered system, including self-disconnection and shutdown.
  • It is part of the GWL/Modular series, i.e., it is an open-source solution that is and will be compatible with the related GWL products and with other commonly available components.
  • The quality of the design, versatility and technical support options make it suitable for industrial applications and sophisticated home installation solutions.

Application possibilities:

  • For a battery with 4 to 16 LiFePO4 or 5 to 16 LTO cells (any number in this range). For more than 16 cells the CPM boards can be chained, the protective disconnecting circuits may be realized with auxiliary relays.
  • To control a bi-stable (dual coil) relay with a coil of full battery control voltage (or lower) by a pulse of 150 ms. One bi-stable relay can disconnect the charger, the second load, and the third (emergency) is a back-up in case the main relays fail to open.
  • For controlling conventional single-coil NO/NC relays with a coil’s voltage of full battery voltage. Two can be used to disconnect and connect the charger, load, or as an information to a additional system, such as a charger, converter or communications module. The third relay is back-up (emergency).
  • For analog communication (Digital voltmeter, warning lights, PLC inputs).
  • For digital communication via i2c protocol (protocol is available on demand).

Functions

  • Powered directly from a protected battery (always from all cells, total voltage 9 V min., 60 V max.).
  • Continuous measurement (200 Hz) of all cell voltages and the lowest and highest voltages output to two separate high impedance outputs (Ucells) for further processing.
  • Labelling of the lowest and highest voltage cells using a two-colour LED; see the specifications.
  • Choice of four fixed predefined upper voltage limits for LiFePO4 cells and four upper voltage limits for LTO cells (Umax).
  • Choice of four fixed predefined lower voltage limits for LiFePO4 cells and four lower voltage limits for LTO cells (Umin).
  • The upper and lower voltage limits are set by hardware, independently of each other, with the rotary switch, without the need for programming.
  • Four outputs for single-coil relays (Umin and Umax, two without hysteresis and two with voltage hysteresis).
  • Four outputs for two-coil bi-stable relays (Umin – load disconnection and connection and Umax – charger disconnection and connection).
  • The single-coil relay always opens 20 seconds earlier than the two-coil relay, which can be used to relieve the load or charge before completely disconnecting the battery.
  • Emergency outputs for single-coil and two-coil bi-stable relays (Uemergency) designed for emergency load disconnection if Umin and Umax disconnection fails.
  • Emergency disconnection of the board’s own consumption and safety disconnection from the battery cells after activation of the emergency output Umin. Else after the voltage reach 4.5 V on any cell.
  • Optimization of CPM consumption by divided even power from all connected cells.
  • Switching the module on and off using the hardware buttons on the board.
  • Switching on, off and reset by potential-free shorting of specified outputs (see the specifications).

SPECIFICATIONS

Number of monitored cells: 4 - 16
Total operating voltage of the pack: 9 V / 60 V (min/max)
Cell voltage indication range: 1,7 – 4,09 V
Max. operating voltage at cell input: 5,5 V
Max. voltage of relays outputs (1,2,3,4 Umin, Umax, Uemergency): 60 V
Cell voltage measurement frequency: 200 Hz
IP code in application: At least IP20
Dimensions: 170 x 100 x 23 mm

Brand
Manufacturer :  GWL
Type specification :  Others
Technical specification
Max. operating temperature (°C) :  80
Min. operating temperature (°C) :  -40
Warranty
Warranty period CRN (months) :  26
Warranty period EU (months) :  26
Physical properties
Weight (kg) :  0.15
Dimensions :  170 × 100 × 23 mm
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