Battery Thermal Management System Market

The global battery thermal management system (BTMS) market size is projected to grow from USD 5.26 billion in 2026 to USD 10.97 billion by 2033, at a CAGR of 11.1%. Growth is driven by higher battery power density, faster DC charging, and increasing adoption of 800 V battery platforms, requiring tighter temperature control and improved thermal uniformity. OEMs and Tier 1 suppliers are shifting toward integrated thermal architectures linking battery cooling with e-motors, inverters, onboard chargers, and heat pumps. Immersion cooling, advanced battery chillers, thermoelectric cooling, and predictive thermal control are gaining focus for high-power and fast-charging applications.

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The BTMS market is dominated by global players such as Robert Bosch (Germany), Gentherm (US), Valeo (France), AUMOVIO (Germany), and Denso (Japan). These companies adopted product development strategies, expansions, partnerships & collaborations, and mergers & acquisitions to gain traction in the market.

• In August 2026, Bosch collaborated with XING Mobility to jointly develop an integrated thermal management solution for immersion-cooled battery systems. The collaboration focuses on improving battery temperature control and supporting efficient thermal management of high-performance battery systems.

• In May 2026, AUMOVIO announced the expansion of its E Mobility Sensors portfolio, with its sensor portfolio covering batteries and electric motors. The company specifically stated that these solutions are being developed to make thermal management systems safer and more efficient.

• In January 2026, Gentherm entered into an agreement to combine with Modine Performance Technologies to expand its thermal management capabilities. The combination includes Modine’s battery thermal management and liquid cooling technologies, strengthening Gentherm’s product portfolio and presence in thermal management applications.

Robert Bosch GmBH

Robert Bosch is strengthening its BTMS market position through an integrated thermal management portfolio covering battery cooling, eAxle cooling, refrigerant circuits, heat pumps, coolant pumps, valves, sensors, and thermal controls. Its flexible thermal module for oil cooling integrates the pump, filter, valves, control unit, heat exchanger, and sensors, with the battery version supporting 50 to 80 L/min flow rates for immersion-cooled high-voltage batteries and offering up to 15% cost savings compared with individual components. Bosch is further expanding into next-generation BTMS through its collaboration with XING Mobility, combining its vehicle thermal management expertise with XING's production-proven immersion cooling architecture. The collaboration initially targets automotive, energy storage, and AI data center battery backup applications, allowing Bosch to extend its BTMS portfolio from integrated conventional thermal systems toward immersion-cooled architectures.

Gentherm

Gentherm is building its BTMS strategy around differentiated thermal technologies covering both battery heating and cooling. Its portfolio combines thermoelectric battery thermal management, air cooling, battery heating, and cell connection systems for different battery architectures. Thermoelectric technology enables localized temperature control without relying solely on conventional liquid cooling circuits. Its collaboration with Carrar adds direct evaporative liquid cooling and two-phase technology for high-power charging and discharging applications. Gentherm is therefore addressing thermal loads associated with higher battery power density and fast charging. The combination of thermal management, heating, sensing, and cell connection technologies supports its strategy to provide multiple battery thermal functions within the battery system.

Valeo

Valeo is expanding its BTMS business through scalable battery cooling plate platforms that support air, liquid, direct, and immersion cooling architectures. In January 2026, the company secured a battery cooling plate order from a Chinese NEV startup for mass production. Its cooling plates use CFD simulation and AI tools for coolant distribution and temperature control, while laser welding with high-strength aluminum alloys reduces component weight by 10%. Valeo also supports three manufacturing processes, brazing, laser welding, and induction welding, and designs its direct cooling solutions for both prismatic and cylindrical cells. The company is further targeting a 50% reduction in production-related CO₂ emissions through new materials and manufacturing processes.

Market Ranking

The battery thermal management system market is competitive. Top players include Robert Bosch GmbH (Germany), Gentherm (US), Valeo (France), AUMOVIO (Germany), and DENSO Corporation (Japan), which collectively account for 42%-46% of market share. Robert Bosch is expanding its BTMS portfolio through XING Mobility’s immersion cooling technology, targeting higher battery energy density, lower system weight, and plug-and-play integration across EV and stationary storage applications. Gentherm is combining thermoelectric cooling, air cooling, battery heating, and cell connection technologies with Carrar’s direct evaporative two-phase cooling to address high-power charging and discharging requirements. Valeo is expanding its BTMS portfolio across battery chillers, refrigerant and liquid cooling, air cooling, and immersion cooling, with systems designed for fast charging and integration across passenger and commercial EV platforms. AUMOVIO is integrating battery thermal management with battery management and vehicle electronics, combining thermal lines, fluid management, sensing, and control functions for integrated EV architectures. DENSO Corporation is integrating battery cooling and heating with heat pumps, HVAC, battery coolers, pumps, and valves to coordinate battery and cabin thermal loads while supporting EV efficiency and charging performance. The remaining players contribute 54%-58% of the market share and are focusing on immersion cooling, advanced liquid cooling, integrated thermal management, battery heating, thermal control software, and high-power fast-charging applications.

Related Reports:

Battery Thermal Management System Market by Technology (Active, Passive Hybrid), Component (Thermal Sensors, Cooling Plates), Battery (LFP, NMC, NCA, LMFP, SSB), Propulsion, Battery Capacity, Offering, Vehicle Type, Region - Forecast to 2033

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