The new national standard is just the starting point! Will the main control board of future communication charging stations integrate V2G (Vehicle Network Interaction) function?

The new national standard serves merely as an "entry ticket," while the main control boards of AC charging piles are rapidly evolving toward a dual identity—"V2G-ready + integrated photovoltaic-storage-charging." Starting from 2025, main control boards that do not support bidirectional energy flow will be deemed "functionally defective." Below is a directly replicable technical blueprint, categorized by "hardware additions, software additions, and implementation pathways," all derived from publicly available batch solutions from December 2024 to November 2025.

1、 Hardware: Upgrade "Unidirectional AC/DC" to "Bidirectional AC/DC+H Bridge"

Bidirectional power core

• Main control MCU: TI C2000 F28388D (55ps PWM) (already in vehicle specifications)

• Bidirectional CLLC/LLC controller: UCC25660x (1MHz switch, 92% round-trip efficiency)

• Driver+Sampling: Isolated Gate Driver (NSI6602)+16 bit Δ - ∑ ADC (NSI1300D25), withstand voltage of 1500V, meeting the new national standard of 1250V DC upper limit

Grid dispatch interface

• PLC-HP (ST8500)+IEEE 2030.5 protocol stack firmware → 1kHz phase-locked, THD<1%， Directly connect to the AGC command of the virtual power plant

• 0.2 level bidirectional metering core (ATT7022E) → discharge electricity can be billed, supporting V2G peak valley arbitrage

Home light storage charging plug and play module

• 30-350kW power brick "PCIe style" hot swappable; Reserved gold fingers on the main control board, photovoltaic MPPT and battery BMS protocol are connected through CAN-FD, and power can be expanded without changing the board

2、 Software: Upgrade "Charging Protocol" to "Energy OS"

Car side: ISO 15118-20 BPT (Bidirectional Power Transfer)

• Discharge power, electricity price, and certificate negotiation are all bidirectional; SECC module on the main control board completes handshake in 200ms

Network side: OCPP 2.0.1 V2G Extension

• NDKhargingProfile can issue negative power (discharge) and supports 1Hz refresh; SafeEventNotification reports certificate expiration and signature failure in real-time

Light storage and charging scheduling algorithm (edge AI)

• Prediction model: LSTM+rolling optimization, predicting photovoltaic output and household load, 15 minute rolling update, photovoltaic self use rate>85%

• Economic strategy: Nash equilibrium multi-objective (minimum electricity cost+longer battery life), automatic discharge depth limit of 80%, cycle life loss<3%

3、 The Implementation Path of Integrated Home Light Storage and Charging (2025 Edition)

system architecture

• Photovoltaic → MPPT → Bidirectional AC/DC ← → Battery Pack ← → V2G Ready AC Pile

• Unified scheduling of the main control board, single core MCU completes the three tasks of photovoltaic MPPT, battery BMS, and V2G grid connection, reducing the number of chips by 40%

• Economic ledger (taking 7kW household as an example)

• Hardware cost increase: Bidirectional main control board+MPPT+H-bridge ≈ ¥ 1800

Annual income:

• Photovoltaic self use+peak valley arbitrage ≈ ¥ 1200

• V2G peak shaving subsidy ≈ ¥ 600

• Payback period: 1800 ÷ 1800 ≈ 1 year (2025 component price)

Policy Window

• Domestic: V2G demonstration cities (Shenzhen, Shanghai) will receive a discharge subsidy of 0.25 yuan/kWh starting from 2025; The reverse metering restriction has been lifted on the home side

• Overseas: EU ECOdesign 2025 mandates V2H readiness, sales are not allowed without bidirectional functionality

one-sentence summary

Starting from 2025, the AC pile main control board will become the default with "two-way from the factory" - after integrating V2G power core, IEEE 2030.5 scheduling stack, and AI optical storage algorithm, the same board can be used for both charging and reverse power supply to the grid/home; Save electricity costs for users, provide operators with an additional peak shaving cash flow, and offer pile companies an additional premium selling point - 'The new national standard is just the starting point, and the two-way energy OS is the future'

The new national standard AC charging pile control board produced by Xincheng Technology is intelligent, safe, and stable. Welcome to consult and purchase!