Kehua Lithium Battery S³ Intelligent Backup Lithium Battery System
Kehua S³ Intelligent Backup Lithium Battery System
High-reliability, high-safety third-generation lithium battery solution.
Company Profile
Kehua Data Co., Ltd. (stock code: 002335), formerly established in 1988, is one of the first enterprises in the industry to be recognized as a National Enterprise Technology Center, a National Key High-Tech Enterprise, a unit undertaking key projects of the National Torch Plan, and a National Technology Innovation Demonstration Enterprise. Over the past 30 years, rooted in core power electronics technology and integrating innovative digital technologies, the company provides comprehensive solutions for data centers, high-end power supplies, and clean energy, serving customers in more than 100 countries and regions worldwide.
40+ national and provincial/ministerial science and technology progress awards.
2100+ patents and intellectual property rights.
Five experts who received special government allowances from the State Council through independent cultivation.
Product Introduction
"Carbon peak and carbon neutrality" have become common goals for countries and industries worldwide, with the wave of green energy and energy conservation sweeping through every sector and household. Riding the momentum of new infrastructure and the dual carbon goals, the lithium battery industry is developing at an astonishing pace. Lithium iron phosphate has stepped into the spotlight due to its excellent stability and safety, continuously undergoing safety upgrades. Leveraging over 30 years of expertise in its specialized field, Kehua has deeply integrated power electronics with lithium battery applications, launching highly reliable and safe solutions.Third-generation lithium battery solution — Kehua S³ intelligent backup lithium battery system solution.(Safety-Li, Smart-Li, Simple-Li).
Lithium battery upgrade and iteration.
- · First-generation lithium batteries: Battery PACK simply connected in series to form a cluster.
- · Second-generation lithium battery: Add some intelligent battery management units based on the first-generation lithium battery.
- · Third-generation lithium battery (S³)The battery PACK adopts modular parallel connection, enhanced by deep power electronics for greater safety, and can be minimally mixed and matched with sodium-ion batteries.
Product Features
Safe and reliable
- Electrical and physical dual isolation, zero voltage at the power port when powered off.
- Faulty battery module automatically exits without expanding the fault scope.
- · Online array-type insulation detection, with early warning of insulation failure
- · Three-layer BMS architecture, providing layers of protection for system security.
- Module-level fire protection, rapid and precise fire suppression, no spread.
Flexible and intelligent.
- · Supports PACK-level and cabinet-levelMixing old and new batteries.
- · Adaptive SOC management to improve operational efficiency
- Battery capacity smart test, no risk of power interruption.
- Alert convergence and data waveform recording for rapid problem localization.
Minimalist operations and maintenance.
- · Modular parallel design, supportsOnline installment expansion
- The backup power time granularity is fine, with precise capacity configuration.
- · The module supports hot-swapping, enablingMinute-level maintenance
- · Module lithium cells transcend the "cluster" limitation, enabling unrestricted grouping.
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Distinctive three-layer BMS architecture
It adopts a three-tier BMS architecture (PBMU / SBMU / MBMU), ensuring the reliability of the lithium battery system at the cell, module, and system levels.
Technical specifications
Battery cell
| Type | 40Ah | 50Ah | 100Ah |
|---|---|---|---|
| Type | Lithium iron phosphate battery cell (LFP) | ||
| Dimensions (mm) | 27.0×148.5×133.0 | 50.5×160.3×120.0 | — |
| Weight (kg) | 1.01±0.1 | 1.11±0.1 | 1.95±0.1 |
| Rated capacity (Ah) | 40 | 50 | 100 |
| Discharge rate (C) | 6 | 4 | 1 |
| Charge rate (C) | 1 | 1 | 0.5 |
| Rated voltage (V) | 3.2 | ||
| Cycle life | 5000 cycles (at 50% depth of discharge) | ||
Lithium battery module
| Project | 40Ah module | 50Ah module | 100Ah module |
|---|---|---|---|
| Battery capacity (Ah) | 40 | 50 | 100 |
| Maximum energy (kWh) | 2.05 | 2.88 | 5.76 |
| DC/DC rated output voltage (V) | 240×2 groups (can be connected in series or parallel) | ||
| DC/DC rated output power (kW) | 10 | ||
| Dimensions (W×D×H) mm | 223×665×152 | ||
| Weight (kg) | 35±1 | 37±1 | 52±1 |
Lithium battery system cabinet
| Project | 40Ah system | 50Ah system | 100Ah system |
|---|---|---|---|
| Maximum battery energy (kWh) | 41.0 | 57.6 | 69.1 |
| Rated output voltage (V) | 240 / ±240 / 480 | ||
| Rated system output power (kW) | 200 | ||
| Number of battery modules | 20 | ||
| Battery module current imbalance degree | Less than 3% | ||
| SOC accuracy rate | 95% | ||
| Communication method | RS485, TCP/IP, dry contact | ||
| Operating temperature (℃) | 0~40 (recommended +15~+30) | ||
| Altitude (m) | 2000m derating use) | ||
| Dimensions (W×D×H) mm | 600×850×2000 | ||
| Maximum number of containers in a consolidated shipment | 15 | ||
| Self-discharge rate | < 3% (0~30°C/1 month) | ||
Short-delay type with 40Ah lithium battery module
| UPS capacity (kW) | 10min (initial) cabinet count | 10min module count | 20min (initial) cabinet count | 20min module count |
|---|---|---|---|---|
| ≤ 60 | 1 | 6 | 1 | 12 |
| ≤ 80 | 1 | 8 | 1 | 16 |
| Less than or equal to 100 | 1 | 10 | 1 | 20 |
| ≤ 200 | 1 | 20 | 2 | 40 |
| ≤ 300 | 2 | 30 | 3 | 60 |
| ≤ 400 | 2 | 40 | 4 | 80 |
| ≤ 500 | 3 | 50 | 5 | 100 |
| ≤ 600 | 3 | 60 | 6 | 120 |
| ≤ 800 | 4 | 80 | 8 | 160 |
Note: This configuration is calculated based on theoretical values; the actual configuration should retain a 10% margin; actual backup time = theoretical backup time × 0.9.
