Blue Energy Storage BMS Battery Module Soft Gel Potting

Product Overview:

Hong Ye HY-9405 is a premium two-component addition-cure platinum catalyzed blue jelly gel specifically engineered for low-stress soft gel potting and vibration protection for battery management system boards and cell gaps in energy storage battery packs. With a buttery soft consistency measured at a penetration of 170 plus or minus 30 (0.1mm) and a durably tacky surface, HY-9405 delivers reliable long-life sealing and protection that outlasts conventional gaskets, foams and caulks by a wide margin. The product is mixed 1:1 by weight, self-levels after pouring, cures at room temperature within 4 to 6 hours, and requires no vacuum degassing, making it a straightforward high-performance gel to deploy on production lines worldwide. As a cost-effective standard grade, this variant offers proven performance at a competitive price for high-volume production. It is formulated for potting BMS boards, busbar areas and inter-cell gaps in industrial, commercial and residential energy storage cabinets, where the gel must damp vibration, insulate against moisture and remain reworkable for module service, with flame-retardant UL94 V-0 and thermal-conductive options available. (EN) Backed by Hong Ye’s nearly 20 years of silicone manufacturing expertise and supplied to customers in over 60 countries, HY-9405 combines the performance of premium imported gels with the cost efficiency, short lead time and responsive technical support of a Chinese manufacturer. Whether you are running a first sample trial or ramping to full production, Hong Ye delivers consistent batch-to-batch quality, comprehensive documentation and application engineering support from first sample through full production.

Key Features:

• Cost-effective standard grade offering proven performance at a competitive unit price for high-volume programs.

• Excellent electrical insulation with dielectric strength above 20 kV/mm

• Repairable and reworkable: old gel can be topped up with fresh gel without full removal

• No VOC emissions during or after cure, suitable for enclosed cleanroom and medical environments

• Can be heat-cured at 60-80C for 30-60 minutes to shorten demolding time in mass production

• Resistant to ozone, UV, moisture, salt spray and common cleanroom cleaning agents

• 1:1 mix ratio by weight, easy to meter with manual or automated dispensing equipment

• Compatible with automated meter-mix dispensing equipment for high-volume production lines

• 12 month shelf life when sealed and stored below 25C in dry ventilated conditions

• Third-party test reports including RoHS, REACH, FDA and LFGB available on request

• Self-leveling after pouring, no vacuum degassing required, saving process time and equipment

• Recommended model: HY-9405 - Blue medium tack electronic potting jelly gel

Technical Parameters:

Detailed Application Scenarios:

Energy storage system integrators pot battery management system boards, voltage acquisition harnesses, busbars and the gaps between prismatic or pouch cells to protect against moisture, dust and road or cabinet vibration. Unlike rigid epoxy or hard polyurethane, HY-9405 cures into a soft, low-modulus jelly mass that exerts minimal stress on cells, welds and sensitive electronics during thermal expansion, while still providing continuous dielectric insulation above 20 kV/mm and environmental sealing. Crucially for serviceable battery packs, the soft gel can be cut or peeled back to access a faulty module and then topped up with fresh gel, avoiding scrap of an entire pack that hard potting would force.

The gel self-levels around dense component layouts without vacuum degassing and is compatible with automated meter-mix dispensing for high-volume pack production. Flame-retardant versions meeting UL94 V-0 and thermally conductive versions supporting passive heat spreading are available for safety-critical battery designs. HY-9405 resists the humid, temperature-cycling conditions inside outdoor cabinet installations. Hong Ye supports BMS and pack manufacturers with custom formulation, gel consumption modeling, flame-retardant certification and batch COA documentation.

Application & Operating Instructions:

Step 1 Surface preparation: Clean the housing or PCB with a dry lint-free cloth. Remove oil, moisture, flux residue and dust. For reliable adhesion, wipe with isopropyl alcohol and allow to fully dry.

Step 2 Component B preparation: Before each use, stir component B thoroughly for at least 2 minutes. Pigment and catalyst can settle during storage; incomplete stirring causes color variation and soft or uncured spots.

Step 3 Weighing and mixing: Weigh A and B at exactly 1:1 by weight using a calibrated scale. Pour into a clean container and stir slowly for 3 to 5 minutes, scraping the sides and bottom. Avoid fast stirring which introduces bubbles.

Step 4 Potting: Pour the mixed gel slowly into the housing, allowing it to flow around components and self-level. Do not pour from a height to avoid air entrapment. For deep or complex cavities, pot in layers.

Step 5 Curing: Allow 4 to 6 hours at 25C before handling; full properties develop after 24 hours. For mass production, heat-cure at 60-80C for 30-60 minutes. No vacuum degassing is required.

Step 6 Contamination prevention: Use polyethylene, nylon or nitrile gloves. Never use natural rubber latex gloves. Avoid contact with sulfur-containing materials, amines, phosphorus compounds, tin-cured silicone and PVC, as these inhibit the platinum catalyst.

Model Selection Guide:

The HY-94 series offers three standard grades to cover the full range of jelly gel applications, and custom formulations are available for volume orders:

HY-9400 (Blue, High Tack, Penetration 200): The soft, high-tack grade, designed for HEPA/ULPA filter gel seals in cleanrooms, biosafety cabinets, pharmaceutical GMP facilities, hospital operating rooms, semiconductor fabs, lithium battery dry rooms and data centers. Choose this model when strong self-healing and conformability to knife-edge channels are key requirements.

HY-9405 (Blue, Medium Tack, Penetration 170): The balanced all-rounder for instrument meter sealing, electronic encapsulation and outdoor waterproofing. Typical applications include smart water/gas/electric meters, automotive ECUs and sensors, solar PV junction boxes, LED modules, underwater lights, battery management systems and pressure sensors. Choose this model when you need a combination of flowability, structural support, vibration damping and repairability.

HY-9409 (Transparent, Low Tack, Penetration 150): The premium skin-contact grade for intimate apparel and medical products. Typical applications include silicone bra pads, push-up inserts, breast prostheses, nipple covers, bridal and swimwear gel pads, orthopedic insoles, baby products and surgical positioning pads. Choose this model when clarity, dry skin feel, anti-yellowing and body-safe materials are required.

If your project requires a different penetration, color, cure speed or special certification (FDA, LFGB, UL94), contact Hong Ye technical support for a custom formulation. Custom MOQ starts from 20kg and typical lead time is 7 to 10 working days.

Recommended Application: Energy Storage BMS Battery Module Soft Gel Potting

Packaging:

Standard packaging options include 1kg trial kits (500g A + 500g B), 5kg kits, 20kg pails, 25kg pails and 200kg drums. Components A and B are supplied in separate containers within each kit. Custom packaging and private labeling are available for orders above 200kg. All kits are clearly labeled with batch number, manufacture date, expiry date and safety information.

Precautions:

Use polyethylene, nylon or nitrile gloves; never use natural rubber latex gloves. Avoid contact with sulfur-containing materials, amines, phosphorus compounds, tin-cured silicone and PVC, as these inhibit the platinum catalyst and prevent cure. Mix A and B at exactly 1:1 ratio by weight using a calibrated scale. Stir thoroughly for 3-5 minutes, scraping container walls and bottom. Do not exceed 100C during heat curing. Ensure good ventilation during operation.

Storage:

Store sealed containers in a dry, ventilated area below 25C, away from direct sunlight, sulfur-containing materials, amines, food and strong chemicals. Shelf life is 12 months from manufacture date. Reseal unused material immediately after dispensing. Refrigerated storage at 5-15C can extend shelf life; allow material to return to room temperature before opening to prevent condensation.

FAQ:

Q: How long does the gel take to cure and can I speed it up?

A: At 25C the gel reaches touch-dry in 4 to 6 hours and full properties after 24 hours. For mass production, heat-curing at 60 to 80C reduces the cycle to 30 to 60 minutes. Do not exceed 100C. Low temperatures below 15C will significantly slow the cure.

Q: Can potted electronics be repaired or reworked later?

A: Yes. Unlike hard epoxy, the soft jelly gel can be cut or peeled back to access components for repair, and fresh gel can be poured back over the area to restore protection. This repairability is a major advantage for serviceable outdoor and industrial electronics.

Q: What waterproof and insulation protection does it provide?

A: The cured gel provides continuous moisture and salt-spray protection with dielectric strength above 20 kV/mm and volume resistivity above 10^14 ohm-cm. Properly potted assemblies reliably meet IP65/IP67 requirements in outdoor environments.

Q: Will the soft gel stress sensitive components?

A: No. The low-modulus jelly gel cures into a soft mass that absorbs vibration and thermal expansion without exerting stress on fragile components, wires or solder joints, unlike rigid epoxy that can crack parts under temperature cycling.