Why is decompression (Venting) important for profitability? | Electricity feea name="description" content="Why is decompression (Venting) important for profitability? Decompression (Venting) in a battery energy storage system (BESS) is a critical safety component for the controlled evacuation of gases in the event of thermal"> <link rel="canonical" href="https://stromfee-mauritius.ai/en/glaesern/bess/wizards/druckentlastung/"> <script type="application/ld+json">{"@context": "https://schema.org", "@type": "Article", "headline": "Why is decompression (Venting) important for profitability?", "mainEntityOfPage": "/glaesern/bess/wizards/druckentlastung/", "description": "Pressure relief (Venting) — Component in the battery storage. Standard: IEC 62619."}</script> <script type="application/ld+json">{"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "What is decompression (Venting) in a BESS?", "acceptedAnswer": {"@type": "Answer", "text": "It is a mechanical or thermal system that controlledly evacuates gases to the outside in the event of overpressure in the battery module."}}, {"@type": "Question", "name": "Why is Venting important for profitability?", "acceptedAnswer": {"@type": "Answer", "text": "A failure of the Venting leads to fire risks that can compromise insurance coverage and render the installation unusable."}}, {"@type": "Question", "name": "Which standard regulates Venting in battery storage systems?", "acceptedAnswer": {"@type": "Answer", "text": "The IEC 62619 standard defines safety requirements for batteries in stationary applications, including Venting requirements."}}, {"@type": "Question", "name": "From what point must a Venting event be reported?", "acceptedAnswer": {"@type": "Answer", "text": "A Venting event is a critical alarm event that requires immediate inspection of the affected module and, if necessary, isolation of the segment."}}, {"@type": "Question", "name": "How to identify a deficiency in the Venting system?", "acceptedAnswer": {"@type": "Answer", "text": "Thanks to the analysis of temperature curves and pressure data in the BMS logs, anomalies can be identified before a critical failure."}}, {"@type": "Question", "name": "Can faulty Venting reduce lifespan?", "acceptedAnswer": {"@type": "Answer", "text": "Yes, because uncontrolled internal pressure causes mechanical stress on cell connections, which accelerates degradation."}}]}</script> 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class="wrap navrow"> <a class="brand" href="/glaesern/bess/">◈ Transparent BESS</a> <nav class="nlinks"><a href="/glaesern/bess/">All trades</a> <a href="/glaesern/bess/sicherheit.html">Fire & leak protection</a></nav> <a class="navcta" href="#kontakt">Installation check →</a></div></header> <div class="hero-w"><h1>Decompression (Venting)</h1><p>Component assistant · Protection against fires and leaks</p> </div> <div class="wiz-wrap"> <div id="steps"> <div class="st" data-s="1"><span class="no">1</span> Comprendre </div> <div class="st" data-s="2"><span class="no">2</span>View live</div> <div class="st" data-s="3"><span class="no">3</span>What the AI does</div> <div class="st" data-s="4"><span class="no">4</span>Your benefit</div> </div> <div id="body"></div> </div> <div class="sec"><h2>Diagram — Process & sensors live</h2><p class="lead">The path through the domain, with the actual measurement points of the installation.</p><svg viewBox="0 0 920 300" 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fill="url(#bx)" stroke="#fdba74" stroke-width="1.5"/><text x="79" y="148" text-anchor="middle" font-size="13" font-weight="700" fill="#1d1d1f"> Capteurs </text><text x="79" y="170" text-anchor="middle" font-size="10.5" fill="#86868b"> Gaz/Temp </text></g><g><rect x="274" y="120" width="118" height="64" rx="12" fill="url(#bx)" stroke="#fdba74" stroke-width="1.5"/><text x="333" y="148" text-anchor="middle" font-size="13" font-weight="700" fill="#1d1d1f"><tspan x="333" dy="-4"></tspan><tspan x="333" dy="14">Aerosol detection</tspan></text></g><g><rect x="528" y="120" width="118" height="64" rx="12" fill="url(#bx)" stroke="#fdba74" stroke-width="1.5"/><text x="587" y="148" text-anchor="middle" font-size="13" font-weight="700" fill="#1d1d1f">Extinguishing system</text><text x="587" y="170" text-anchor="middle" font-size="10.5" fill="#86868b"> Déclenchement </text></g><g><rect x="782" y="120" width="118" height="64" rx="12" fill="url(#bx)" stroke="#fdba74" stroke-width="1.5"/><text x="841" y="148" text-anchor="middle" font-size="13" font-weight="700" fill="#1d1d1f">Emergency stop</text><text x="841" y="170" text-anchor="middle" font-size="10.5" fill="#86868b"> Séparation </text></g></svg></div> <div class="sec"><div class="block"><h3>Thus we connect — read only</h3><p class="step-p">The value comes from<b>Modbus TCP · CAN (BMS) · PCS</b>of the installation —<b>read, not controlled</b>. Everything is<b>in the house</b>calculated, nothing leaves the house. No obligation to disclose operational data.</p></div><div class="block"><h3>Your own BESS LLM — offline</h3><p class="step-p">Questions in plain language, answered by<b>Your own installation data</b>— local, no cloud. The AI runs internally; the installation remains yours.</p></div><div class="note"><b>Regulatory framework:</b>IEC 62619</div><div class="block"><h3>Connection with the entire installation</h3><p class="step-p">Storage only reveals its value within the system: with PV, load peaks and electricity prices. The AI plans storage in relation to the entire installation.</p><div style="display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.6rem"><a href="/glaesern/cogeneration/" style="font-size:.85rem;padding:.4rem .9rem;border:1px solid var(--border);border-radius:999px;text-decoration:none;color:var(--accent)">Transparent CHP →</a><a href="/glaesern/hotel/" style="font-size:.85rem;padding:.4rem .9rem;border:1px solid var(--border);border-radius:999px;text-decoration:none;color:var(--accent)">Transparent Hotel →</a><a href="/fr/pv-watcher/" style="font-size:.85rem;padding:.4rem .9rem;border:1px solid var(--border);border-radius:999px;text-decoration:none;color:var(--accent)">PV-Watcher →</a></div></div></div><div class="sec faqsec"><h2>Frequently Asked Questions</h2><details><summary>What is decompression (Venting) in a BESS?</summary><div class="faq-a">It is a mechanical or thermal system that controlledly releases gases to the outside in case of overpressure in the battery module.</div></details><details><summary>Why is Venting important for profitability?</summary><div class="faq-a">A failure of the Venting leads to fire risks that can compromise insurance coverage and make the installation unusable.</div></details><details><summary>Which standard regulates Venting in battery storage systems?</summary><div class="faq-a">The IEC 62619 standard defines safety requirements for batteries in stationary applications, including Venting requirements.</div></details><details><summary>From when must a Venting event be reported?</summary><div class="faq-a">A Venting event is a critical alarm event that requires immediate inspection of the affected module and, if necessary, isolation of the segment.</div></details><details><summary>How to identify a deficiency in the Venting system?</summary><div class="faq-a">Thanks to the analysis of temperature curves and pressure data in the BMS logs, anomalies can be identified before a critical failure.</div></details><details><summary>Can faulty Venting reduce service life?</summary><div class="faq-a">Yes, because uncontrolled internal pressure causes mechanical stress on cell connections, which accelerates degradation.</div></details></div> <footer class="site"><div class="wrap"> <div class="fbrand">◈ Transparent BESS</div> <p class="fclaim">Connected in read-only mode · local calculation · no cloud. The installation remains with you.</p> <nav class="flinks"><a href="/glaesern/bess/">All trades</a> <a href="/glaesern/bess/sicherheit.html">Fire & leak protection</a> <a href="https://bhkw-anlagen.com/impressum.html">Legal notice</a> <a href="https://bhkw-anlagen.com/datenschutz.html">Data protection</a></nav> <div class="fcopy">© 2026 HR Energiemanagement GmbH · 32257 Bünde · +49 5223 4921030</div> </div></footer> <script> var state={step:1}; function li(t){return '<li>'+t+'</li>';} function nav(s){var b=s>1?'<button class="wiz-back" onclick="go('+(s-1)+')">← Back</button>':'<span></span>'; var n=s<4?'<button class="wiz-next" onclick="go('+(s+1)+')">Next →</button>':'<button class="wiz-next" onclick="go(1)">From the beginning</button>'; return '<div class="wiz-nav">'+b+n+'</div>';} function step1(){return '<div class="step-grid"><img class="step-img" src="../img/sicherheit.jpg" alt="Decompression (Venting)">'+ '<div><p class="step-kicker">Step 1 · Understand</p><h2 class="step-h">What is decompression (Venting)?</h2>>'+ '<p class="step-p">Pressure relief (venting) in a battery energy storage system (BESS) is a critical safety component for the controlled release of gases during thermal runaway or overpressure. In accordance with IEC 62619, venting prevents the uncontrolled destruction of cell packs and protects the entire system from fire propagation. A functioning venting system is essential to maintain operating permits and ensure the lifespan of the BESS.</p></div></div>'+nav(1);} function step2(){return '<div class="step-grid"><div><p class="step-kicker">Step 2 · See live</p><h2 class="step-h">No own register — honestly</h2><p class="step-p">For this component, <b>no own register</b> is connected; therefore, no example value is provided here. Where the system measures, the value is read as read-only and calculated internally. It becomes visible via connected components.</p></div><img class="step-img" src="../img/sicherheit.jpg" alt="System"></div>'+nav(2);} function step3(){return '<div class="step-grid"><div><p class="step-kicker">Step 3 · What the AI does</p>'+ '<h2 class="step-h">What the AI reads in this component</h2><ul class="chk">'+li('Detection of <b>overpressure events</b> to prevent mechanical failures')+li('Monitoring of <b>gas release</b> as an indicator of cell instability')+li('Early warning before a <b>thermal runaway (Thermal Runaway)</b>')+li('Assurance of <b>compliance with certification</b> according to IEC standards')+'</ul></div>'+ '<img class="step-img" src="../img/ki-sicherheit.jpg" alt="AI monitors"></div>'+ '<div class="szen szen-grid"><img class="szen-img" src="../img/szen-sicherheit.jpg" alt="Scenario" loading="lazy"><div><p class="mon">Monitoring: continuous · Gas, temperature, leak</p>'+ '<p class="step-p"><b>The scenario:</b> a thermal runaway manifests through gases and an increase in temperature before it becomes visible.<br>'+ '<b>The AI:</b> detects early signs and triggers staged alerts instead of waiting for a full fire. <b>It identifies the trend before the limit value is reached.</b></p></div></div>'+nav(3);} function step4(){return '<p class="step-kicker">Step 4 · Your benefit</p><h2 class="step-h">Why it is important</h2>'+ '<div class="benefit"><h3>Reliable venting minimizes the risk of total failures and ensures the insurance security of the BESS.</h3><p>By preventing fire incidents, system availability remains high. This protects the investment from premature depreciation due to hardware damage.</p></div>'+ '<div class="calcbox"><p class="step-p">Warning time Gas→Aerosol (s) <input id="c0" type="number" step="any" value="30" oninput="r()"> → <b><span id="o" style="color:var(--accent)">—</span> s warning</b></p>'+ '<p class="mon" style="margin-top:.5rem">Calculation method: time between gas warning and activation</p></div>'+nav(4);} function r(){var v=[];for(var i=0;i<1;i++){var e=document.getElementById('c'+i);v.push(e?parseFloat(e.value)||0:0);}'o');if(o)o.textContent=(Math.round(res*100)/100).toLocaleString('de-DE');}'body').innerHTML=state.step===1?step1():state.step===2?step2():state.step===3?step3():step4();'#steps .st').forEach(function(el){var n=+el.getAttribute('data-s');el.classList.toggle('on',n===state.step);el.classList.toggle('done',n<state.step);});'smooth'});} document.querySelectorAll('#steps .st').forEach(function(el){el.style.cursor='pointer';el.onclick=function(){go(+el.getAttribute('data-s'));};}); render(); </script></body></html>