In this guide...
We'll walk you through common reasons why your EV charger may be charging at a lower power than expected, including battery conditions, cable compatibility, solar PV linkage modes, and site-level load balancing settings
1. Charging power is less than expected
The vehicle SOC is low (below 25%) or high (above 85%), and the battery temperature is too low (below 0°C) or too high (above 50°C).
1. When the vehicle battery SOC is at a low or high level, the battery will limit the charging current, which is normal.
2. When the vehicle battery temperature is too low or too high, the battery will limit the charging current, which is normal.
2. EV Charger/Charging cable/vehicle matching problem
1. Confirm the charging current and charging power with the customer (it is best to provide pictures of the APP charging interface or vehicle meter charging interface)
2. Confirm with the customer whether the EV Charger has set the maximum charging current limit on the APP.
3. Confirm the EV Charger model (SN) with the customer; if the customer purchases an EV Charger as socket, it is necessary to confirm the specifications of the charging cable used by the customer (single-phase/three-phase, rated current, and other parameters); user model (OBC rated power).
The actual charging power/current of the EV Charger is affected by the rated current of the charging cable and the rated power of the vehicle charger.
3. Users use the APP to turn on the photovoltaic linkage function
Introduction to photovoltaic linkage mode
1.Green mode:
1. When solar energy > household load + minimum starting current of EV Charger (6A).
Charging current = solar energy - household load (6A ≤ EV Charger charging current < 32A).
2. When solar energy < household load + minimum starting current of EV Charger (6A).
The EV Charger enters the charging pause state, and charging can be resumed when solar energy > household load + 6A.
2.Eco mode:
1. When solar energy > household load + minimum starting current of EV Charger (6A). Charging current = solar energy - household load (6A ≤ EV Charger charging current ≤ 32A). 2. When solar energy < household load + minimum starting current of EV Charger (6A). Charging current = 6A = solar energy - household load + grid power.
To sum up: when the user turns on the photovoltaic linkage green mode, the maximum charging current of the EV Charger is the residual current generated by the photovoltaic inverter. When the photovoltaic power generation is insufficient (single-phase inverter power generation is at least 1.4KW, and the three-phase inverter power generation is at least 4.2KW), the EV Charger will stop charging.
When the user turns on the photovoltaic linkage economic mode, the maximum charging current of the EV Charger is the residual current generated by the photovoltaic inverter. When the photovoltaic power generation is insufficient (single-phase inverter power generation is at least 1.4KW, three-phase inverter power generation is at least 4.2KW), EV Charger will continue to charge with 6A current.
Because photovoltaic power generation is greatly affected by light, the charging current will be adjusted frequently in photovoltaic linkage mode. If customers report that the charging current is small or charging does not start, customers need to pay attention to whether the power generation of the photovoltaic inverter is sufficient to start the EV Charger and carry out large-scale current charging.
Section Four: User Utilization of Site-Level Load Balancing Functionality
Site-level load balancing is a feature intended for commercial charging stations and is not recommended for individual users to enable.
If a user adds a EV Charger to a station and activates load balancing, when the EV Charger lacks metering data, the maximum charging current will be restricted to 6A.
Similarly, if the EV Charger added to the station is offline, the maximum charging current will also be limited to 6A.
Suppose users report that the charging current never exceeds 6A. In that case, they should confirm with the customer whether the EV Charger has been added to the station and if site-level load balancing functionality has been enabled.
Steps to remove:
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