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New Products of BMS Battery Management Chips from World-renowned Manufacturers in 2022

07 Jan 2023 16:45:57 GMTJason
According to statistics from Mordor Intelligence, the global battery management chip market size was US$6.8 billion in 2018, and is expected to grow to US$9.3 billion by 2024, with a compound annual growth rate of 5.36%. In the segments of energy storage, new energy vehicles, and electric two-wheelers, the compound annual growth rates of the BMS battery management chip market are as high as 72.34%, 40.07%, and 36.18%, respectively. With the rapid development of energy storage, new energy vehicles, electric two-wheeled vehicles, and wearable downstream applications, the market demand for BMS battery management chip products with high precision, low power consumption, miniaturization, and intelligence is increasing sharply.

In order to grasp the market opportunity of the rapid growth of battery management chip market demand and meet the demand for high-performance battery management chips in the future, this year TI, ADI, Qualcomm, MPS, ST, these foreign BMS battery management chip giants, as well as SinoWealth, Sai China's leading BMS battery management chip companies such as Core Electronics and Southchip Semiconductor have launched a new generation of products.

2022 is drawing to a close. Let's take a look at the new BMS battery management chip products launched by global manufacturers this year. In which aspects have the performance been improved? How much breakthrough has the product made in terms of accuracy, low power consumption, and intelligence?

TI: The layout of vehicle-mounted BMS continues to deepen, and product accuracy and low power consumption have improved

In the field of BMS battery management chips, TI is the company with the highest market share in the world. According to data from French semiconductor consulting agency Yole, TI will occupy a 31% market share in the global battery management chip market in 2020. In 2021 and the first half of 2022, TI will achieve revenues of 131.94 billion yuan and 72.788 billion yuan respectively. At present, TI has single-cell and multi-cell battery protection chips, linear/switching buck-boost battery charge management chips, single-string/multi-string fuel gauge chips, battery monitors and balancers, and Chinese manufacturers in the field of BMS battery management chips. There are few battery authentication chip product lines, and BMS battery management chip product specifications have exceeded 500 models.

Since 2022, TI has launched a variety of new BMS battery management chips. First of all, BQ294534 is a new product for tablet PCs, tablet PCs, power tools, and laptops. This is a battery management chip for secondary protection of two to three series batteries. Consumes 1µA. At present, Chinese manufacturers such as SinoWealth, Saiweidian, Wenxianwei, etc., their battery protection chips generally achieve a protection accuracy of ±20mV. The battery protection chip BQ294534 launched by TI this year has higher protection Accuracy, stronger competitive advantage.

In addition, TI has also launched an 800mA linear charging management chip BQ25176M, with a maximum input voltage of 30V and a low-power automatic sleep mode of 350nA, as well as a new battery management chip TMP1827 with authentication function, which consumes only 1μA.

In the field of vehicle regulations, TI has also made significant progress this year. It has successively launched BQ79652-Q1 and BQ79654-Q1, 12-series and 14-series battery monitors for vehicles that meet functional safety standards for hybrid and electric power systems, electric bicycles, and electric scooters. These two new products can work in an environment of -40°C to 125°C, with an ADC accuracy of ±1.5mV, support internal automatic balancing of batteries, and support current detection and measurement of shunt resistors, support integrated current sensing functions, and can communicate through isolated differential daisy chains , highly accurate battery voltage measurements can be performed on all battery channels within 128μs. TI has been in the automotive field for many years, launching hundreds of global automotive-grade ICs every year. In the field of BMS battery management chips, it has a leading wireless BMS solution.

Texas Instruments Chip
                                                                          Figure: TI's new car battery management chip BQ79652-Q1

Judging from several new BMS battery management chip products launched this year, TI is more focused on the development of industrial control, medical health, and automotive regulations. The new products have improved in terms of accuracy and low power consumption, and they have a strong competitive advantage in performance in the industry. .

ADI: BMS charging management and monitor innovation for various car specifications

ADI is the second largest BMS battery management chip manufacturer after TI. It occupies a 17% market share in the global battery management chip market in 2020. Last year, it acquired Maxim, which has absolute advantages in the fields of automobiles and data centers. Increased its own market share in BMS battery management chips.

At present, in the field of BMS battery management chips, ADI has a layout of 4 strings/4 to 6 strings of cell balancers, linear/switching/pulse type charge management chips, battery metering chips, battery ID and verification ICs, and battery status monitoring chip product lines. . This year, ADI launched a new MAX77986 switch-type battery charging chip for the automotive and industrial fields, charging up to 5.5A, with an absolute maximum input voltage of 28V and a maximum of 18W. On this product, ADI has optimized for high-voltage input operation and accelerated charging time by monitoring Kelvin sensing battery voltage.

In addition, ADI also launched three new battery gauges, ADBMS2950, ADBMS2952, LTC2959. Among them, LTC2959 is mainly a new battery fuel gauge for remote sensors, energy harvesting systems, low-power handheld products, and power tool applications. It has a wide input voltage range, low operating current, high precision, and fast collection of charge, voltage, current and Advantages of the temperature parameter.
ADI battery LTC2959
                                                                                            Figure: ADI new battery fuel gauge LTC2959

ADI has also launched a new battery status monitor MAX17854 for electric bicycles, electric vehicles, and hybrid electric vehicles. In shutdown mode, the power consumption is as low as 2μA, the working voltage is 65V, and the accuracy is 2.2mV. ADI has optimized driving and parking balancing modes, using a single battery timer for automatic balancing. ADI's product applications are the most in the industrial and automotive fields, and its revenue in these two fields will account for as much as 71% in 2021.

SyChip: The power consumption of battery protection chip shutdown is as low as 1nA

SyChip has been focusing on the field of lithium battery protection chips. The difference is that it uses single-wafer technology to design battery protection chips. The product has advantages in terms of integration and cost. In 2010, SyChip launched the first single-wafer single-cell lithium battery protection chip, which was mass-produced and shipped in 2011. In 2015, there were more than 200 single-wafer lithium battery protection chips. The sales volume of battery protection chips increased by 300 million units, exceeding 1.1 billion units annually, and the market share increased significantly.

At present, the lowest static power consumption of the single-string lithium battery protection chip of SyChip is 1.4μA, and the lowest shutdown power consumption is 1nA. The overcharge detection voltage accuracy of the multi-string lithium battery protection chip has been improved from ±50mV in the past to ±25mV, and there is still a gap between the protection accuracy and the products of TI and ADI. On the charge management chip, SyChip currently has two types: linear and switch.

SinoWealth: BMS products have been significantly improved in the direction of high serial number

SinoWealth is a Chinese BMS battery management chip company. In 2012, it successfully launched battery management chips for electric bicycles, electrical tools, and notebook computers. In 2015, it first proposed the research and development of automotive lithium battery management chips. The chip business has achieved leapfrog growth. In 2021, BMS chips will become SinoWealth' second largest business after home appliances and motor control chips.

On the BMS track, SinoWealth focuses on the research and development of battery metering chips, battery protection chips, and battery sampling chips. It is understood that the original analog front-end battery sampling chip of SinoWealth can only sample 3 to 5 strings of batteries, and then further develop to sample 6-10 strings of batteries at the same time. At present, the latest generation of products can already sample 5 to 16 Simultaneous sampling of battery strings. In terms of application fields, SinoWealth' BMS battery management chip products are mainly used in the fields of electric bicycles, notebook computers, and smart phones. Not long ago, SinoWealth stated on the investor interaction platform that the company will take advantage of BMS+ to expand the product category of BMS battery management chips in an orderly manner, and plans to extend from industrial-grade lithium battery management chips to automotive-grade applications.

This year, SinoWealth launched the SH367309 analog front-end sampling chip for 5-16 series lithium battery BMS. It is designed with 13-bit VADC to collect voltage/temperature, 16-bit to collect current, built-in balance switch, and the function of prohibiting low-voltage battery charging. Rich protection functions such as overcharge protection, overdischarge protection, charge and discharge high and low temperature protection, charge and discharge overcurrent, etc.

Summary of BMS Battery Management Chips:

In 2022, many manufacturers in China will release new products of BMS battery management chips. Judging from the situation of new products, the accuracy, low power consumption, and protection functions have all been improved to a certain extent, but they have not seen too much in terms of intelligence. Progress. In terms of application fields, Chinese manufacturers are still focusing on the consumer electronics field dominated by TWS earphones and smartphones. Foreign manufacturers will be more inclined to vehicle and industrial applications in new BMS products. The products are high-precision, intelligent, and support the highest withstand voltage. The advantage is more obvious.

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