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Tesla is designing an electric pump system that makes its drive units even better

Published

6 years ago

January 11, 2019

Simon Alvarez

Amidst Tesla’s continued efforts to usher in an era of mobility optimized for the convenience and safety of car owners, the electric car maker is exploring new ways to improve its vehicles’ systems. Recently published patent applications, for one, indicate that Tesla is working on better damage monitoring features, as well as safer seats that are capable of classifying a car’s occupants. Apart from these, Tesla is also looking into improving its vehicles’ electric pump system, which could ultimately result in better cooling and diagnostics.

The patent application, published on January 3, 2019 and titled “Electric Pump System and Method,” explores improvements that could be implemented on traditional pump systems used in automobiles. As noted by Tesla, traditional oil pumps, particularly those that are used for EV components such as the drive unit, do not have the capability to monitor oil condition. As a result, oil that is used to lubricate an electric car’s drive unit need to be changed on a regular basis (albeit very infrequently).

In the discussion section of its patent application, Tesla pointed out that traditional oil pumps are unable to accurately determine temperature, since temperature sensors are usually located outside of a conventional pump system. Apart from this, the electric car maker notes that conventional oil pumps are also large and unwieldy due to attachment mechanisms comprised of different parts. With these points for improvement in mind, Tesla has pointed out that there is a need for an “improved oil pump — in particular an electric pump system — designed to work in conjunction with an electric motor.”

: (Photo: US Patent Office)

: (Photo: US Patent Office)

Illustrations from Tesla’s recently published patent application for an electric pump system. (Photo: US Patent Office)

Tesla’s patent describes an electric pump system that “presents methods and structures that help overcome the difficulties of operating a cooling and lubrication system, in particular, managing the transfer of heat and assessment of fluid temperature in electric pump systems.” The Silicon Valley-based carmaker describes its electric pump system design as follows.

“There is provided an apparatus that includes an electronic control unit, a mechanical pump, and a motor having a first side and a second side, the motor including: a stator, a rotor including a hollow shaft, and a housing around the stator and rotor, wherein the electronic control unit is connected to the first side of the motor, wherein the mechanical pump is connected to the second side of the motor, wherein the hollow shaft defines a shaft inlet and a shaft outlet, wherein the mechanical pump defines a first fluid passageway from a first pump inlet to the shaft inlet, wherein the housing defines an internal motor cavity, wherein the shaft outlet is in fluid communication with the internal motor cavity, wherein the mechanical pump defines a second fluid passageway from a second pump inlet to a pump outlet, and wherein the motor housing and mechanical pump define a third fluid passageway from the internal motor cavity to the pump outlet via a third pump inlet.”

“In some embodiments the apparatus according to the above-described aspect of the present disclosure or any other aspects thereof, a number of optional operations and features may be employed. One optional feature is the electronic control unit further including a thermistor to measure a temperature of a fluid exiting the shaft outlet. Another optional feature is wherein the housing defines a bypass inlet in fluid communication with the internal motor cavity. Another optional feature is at least a portion of the second fluid passageway and the third fluid passageway is common. Another optional feature is the mechanical pump is a gerotor. Another optional feature is the electronic control unit includes a microcontroller controlling the mechanical pump. Another optional feature is the electronic control unit includes cooling ribs.”

: (Photo: US Patent Office)

: (Photo: US Patent Office)

Illustrations from Tesla’s recently published patent application for an electric pump system. (Photo: US Patent Office)

With such a design, the fluid temperature inside the electric pump system could be used to control and optimize the lubrication system of a vehicle, thereby improving the efficiency of an electric drive unit. Depending on the temperature of the oil in the system, the electric pump could react accordingly, even warning the vehicle’s computers that something is wrong. The readings from the electric pump system can be used to monitor the health of a vehicle’s drive unit as well. Tesla explains this process in the following discussion.

“The fluid temperature may be controlled to achieve certain lubrication properties. For example, hotter oil has lower viscosity which reduces drag and hydraulic power to pump the fluid, which can increase efficiency. If the oil becomes too hot, however, it will not provide sufficient cooling. The fluid temperature reading feature of the oil pump can monitor the general health and performance of the fluid in the electric drive unit system. For example, if the oil is too hot, the oil pump may alert the car computer that something is wrong, for oil that is too hot can damage or/and reduce the life of some components on the drive unit.”

“Stated another way, the temperature of fluid may be used to monitor the health and performance of the drive unit. The ECU may capture other information besides the temperature, such as pump speed, pump current composition, oil pressure, or other information. The information captured by the ECU may then be fed into a proprietary algorithm that monitors oil pump and overall drive unit health. The algorithm may provide an indication of service, such as when oil must be replaced or when the drive train needs to be serviced.”

What is particularly notable is that these improvements could result in enhancements to Tesla’s drive units, which are already among the best in the industry. The Model 3’s drive unit, for one, has been lauded by veteran teardown experts such as Sandy Munro as industry-leading. In a recent appearance at Autoline TV, for one, Munro noted that Tesla’s drive units are practically a class above its competitors.

Tesla’s constant efforts to improve its vehicles are highlighted by the patent applications from the company that have been published over the past months. Among these include an automatic tire inflation system that hints at off-road capabilities for the company’s vehicles, a system that allows Tesla to address panel gaps during vehicle assembly, a way to produce colored solar roof tiles, and even a model that utilizes electric cars as a way to improve vehicle positioning, to name a few.

The full text of Tesla’s recently published patent application could be read here.

Simon Alvarez

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla receives its first robotaxi permit in California

Tesla’s robotaxi services are one step closer to making it to California.

Published

5 hours ago

March 18, 2025

Zachary Visconti

Credit: Tesla

Ahead of Tesla’s plans to roll out a fleet of commercial robotaxis, the company has gained its first permit in a series of those needed to begin operating driverless ride-hailing services in California.

On Monday, the California Public Utilities Commission (CPUC) announced the approval of Tesla’s application for a charter-party carrier permit, which licenses the company to run ride-hailing and chauffeur services in the state, according to a report from Reuters on Tuesday.

The permit allows Tesla to own and operate a chauffeur fleet for certain commercial purposes, including the ability to transport employees across pre-arranged navigation routes. However, this permit does not yet offer full approval for ride-hailing or autonomous vehicle use.

Still, the permit comes as the first in a series of those Tesla will need to launch a highly-anticipated autonomous robotaxi business, which is expected to begin rolling out in Texas and California this year. Tesla also released its two-seat, steering wheel-less Cybercab at an event in October, eventually expected to be the basic fleet vehicle for driverless ride-hailing purposes.

You can see Tesla’s render for a ride-hailing mobile app below, along with Teslarati’s coverage of the October 10 “We, Robot” unveiling event for the Cybercab.

Credit: Tesla

🎥: Our FULL first ride in the @Tesla Cybercab pic.twitter.com/6gR7OgKRCz
— TESLARATI (@Teslarati) October 11, 2024

READ MORE ON TESLA’S ROBOTAXI BUSINESS: Tesla flexes Robotaxi wireless charging — autonomy from top to bottom

In California, the CPUC will also co-manage regulatory needs for autonomy approval for Tesla, alongside the Department of Motor Vehicles (DMV).

During Tesla’s Q3 earnings call last November, Elon Musk said that Tesla employees in the Bay Area were already testing a ride-hailing service internally. Using an app, Musk said employees could already request rides and be taken to anywhere in the Bay.

Meanwhile, Tesla is aiming to roll out initial unsupervised rides as a service in the Austin, Texas area this summer, based on its Full Self-Driving (FSD) software. The system is first expected to be usable on individual owners’ vehicles, eventually using the recently unveiled Cybercab autonomous vehicle on a wider scale.

Tesla also hopes to expand the service to other states by the end of the year, though it’s not yet clear where.

Tesla mobile app tracker reports first lines referencing robotaxi service

News

Tesla has joined the Australian Energy Council

Tesla Energy will join a top energy council in Australia, as it continues to deploy a wide range of battery projects in the country.

Published

7 hours ago

March 18, 2025

Zachary Visconti

Credit: Tesla Megapack | X

Tesla has been announced as the most recent member to join an industry group of electricity and energy businesses in Australia, coming amidst a wave of grid- and home-scale battery deployments in the country from the U.S. manufacturer.

Last week, Tesla Australia officially joined the Australian Energy Council (AEC) as the group’s newest member, contributing to a group of companies that administers gas and electricity to over 10 million homes. The news, announced in a post on LinkedIn, comes as Tesla continues to expand the presence of its grid-scale Megapacks and home-scale Powerwalls in Australia and elsewhere,

The council wrote the following announcement message in the post:

AEC membership provides an opportunity to collaborate to develop the solutions necessary to drive Australia’s energy transition. Together, we aim to create positive outcomes for consumers across the nation as the energy system decarbonises.

We look forward to working closely with Tesla Australia to help shape the future of Australia’s energy landscape.

The announcement also garnered a response from Tesla Energy’s Regional Director for the Asia-Pacific region Josef Tadich, who shared a few words about the news in another post:

A big thank you to Louisa Kinnear and the Australian Energy Council, Tesla are very much looking forward to working together in this space, in what is turning out to be an exciting 2025.

Wholesale and retail electricity markets are rapidly adapting and changing to new technologies, with more renewables and storage on the supply side, and more generation and flexible loads on the Customer demand side with VPPs, and controllable EV charging loads to name a few. Great time to be in this dynamic space!

READ MORE ON TESLA ENERGY IN AUSTRALIA: Tesla building battery repair facility near Collie Megapack project

The announcement comes as Tesla has shipped Megapacks to a handful of energy storage sites in Australia, including a 1,600MWh Tesla Megapack facility in Plumpton, Victoria that’s expected to turn on sometime this year. Tesla is also working on expanding the Western Australia “Collie” battery, which will feature 2,240 MWh of Megapack storage upon completion of phase two.

While the U.S. company currently builds its Megapacks at a so-called “Megafactory” in Lathrop, California, the company began production last month at a second Megafactory in Shanghai, China that’s expected to supply future energy projects in Australia. The company has also teased plans for a third Megafactory, though it isn’t yet clear where that could be built.

In addition to Tesla’s grid-scale Megapack batteries, the company also builds the Powerwall home-scale battery, which can be used for households or commercial buildings to store energy, along with being able to deploy energy back to the grid. Tesla also launched its next-generation Powerwall 3 in the Australian market last year.

The company utilizes its network of Powerwall owners to create giant, distributed batteries, called Virtual Power Plants (VPPs), effectively letting owners sell electricity back to the electrical grid during periods of peak demand. These programs are being utilized across much of Australia and several other markets throughout the world, and Tesla said in October that it had reached over 100,000 Powerwalls participating in VPPs worldwide.

Tesla Energy secures $375M Megapack contract

News

Tesla arsonist set himself on fire after throwing Molotov cocktail: authorities

Witnesses reported that the suspect caught fire mid-act, with one device scorching his back as he fled.

Published

8 hours ago

March 18, 2025

Simon Alvarez

Credit: Tesla Asia/X

An arson attempt targeting a Tesla charging station in South Carolina left the suspect engulfed in flames and facing up to 20 years in prison, authorities have stated.

The suspect allegedly torched three chargers in a protest against President Trump and Tesla CEO Elon Musk, scrawling anti-Trump graffiti before accidentally setting himself ablaze with his own Molotov cocktails, as noted in a New York Post report.

Arsonist Burns Self in Tesla Protest

Federal prosecutors stated that 24-year-old Daniel Clarke-Pounder hurled five Molotov cocktails at a Tesla charging station in North Charleston, igniting three chargers while leaving messages like “f–k Trump” and “long live the Ukraine” in the area. Witnesses reported that Clarke-Pounder caught fire mid-act, with one device scorching his back as he fled, according to a police report cited by WCBD.

“The suspect had accidentally caught their own back on fire while throwing the devices,” an initial police report noted. Clarke-Pounder was arraigned in federal court, though his injuries remained undisclosed.

Backlash Targets Musk’s Tesla Empire

The fiery incident follows a wave of hostility toward Tesla, fueled by Musk’s leadership of the Department of Government Efficiency (DOGE) under U.S. President Donald Trump. Over the past months, Teslas have been subjected to vandalism incidents, and some locations have been shot up. In some cases, Tesla locations have been attacked with Molotov cocktails.

Officials such as President Donald Trump and Attorney General Pam Bondi have issued stern warnings against those who wish to attack Tesla and its customers. Trump, for one, pledged that anyone caught attacking American companies like Tesla will “go through hell.”

“No Place in Our Community”

Acting U.S. Attorney Brook B. Andrews condemned the attack, stating, “While we will defend the public’s right to peaceful protest, we will not hesitate to act when protest crosses the line into violence and mayhem.

“These kinds of attacks have no place in our community… We must remain united in our commitment to safety and respect for all, regardless of political differences.”