BE1029430B1 - Multifunctional charger and charging solution for electric cars - Google Patents

Abstract

A charging point for electric vehicles consisting of a permanently mounted wall bracket into which a mobile part is slid in to form a fixed charging point in combination, but where the mobile part can also be extended and taken and used when traveling. Adapter cables can be used to connect to different types of sockets. So it is a combination of a fixed charging point and a mobile charger.

Description

From WWW. XOiD. COM Thu Sep 28, 2023 9:32:09 AM CEST Page 1 of 10 1

Multifunctional charger charging solution 7

The current application concerns a mobile/fixed charging facility for charging electric cars. More specifically, it concerns a charging station that can charge any type of commercial electric or plug-in hybrid car, both at home as a fixed charging point, at work and when traveling.

Electric vehicles (EVs), and electric cars in particular, are an important area of current research and development. The main advantage of EVs is their eco-friendliness. Using an electric battery system as a power source ensures optimal conversion of electrical energy to mechanical energy, while the EV's battery system can be charged with any type of electrical energy, including

CO2-neutral energy such as solar energy and wind energy.

In addition, the use of electric cars is being increasingly promoted and the company fleet is also being electrified. All this results in higher electricity consumption and therefore the need to make better use of the current national and regional electrical infrastructure, to avoid consumption peaks and overload as much as possible.

Unlike petrol and diesel cars, electric cars are usually supplied with “fuel” at home or at work. In both cases it is desirable to do this as efficiently as possible. In the case of a company car, some form of settlement of the electricity costs will also have to be made, and sometimes it is desirable to open the charging point for public use. Even in the latter case, a settlement must be made.

Above all, global warming and the associated measures will oblige us to drastically limit the use of fossil fuels and focus more on renewable energy, which again requires technical solutions to make this as efficient as possible. The solution in this application provides an answer to many of these questions.

A specific situation arises when an employee is provided with an electric company car by his employer. In that case, a charging station is installed at the employee's home, but from that moment on it becomes part of the employee's permanent electrical installation, and can therefore be used in the event of dismissal or other form of cessation of employment.

From WWW. XOiD. COM Thu Sep 28, 2023 09:32:09 AM CEST Page Z of 10 2 the use of the company car cannot be recovered. Our invention also offers a BE2022/0063 solution here.

The invention concerns a device for charging Electric Vehicles (EVs), whereby no distinction is made, as has hitherto, between a fixed device for home or work and a mobile solution that can be taken with you on the move and used there. to charge the car.

Our solution concerns a removable charger that, when used as a fixed charging point, can be placed in a wall bracket that also contains the electrical power supply for the charger and thus offers the functionality and benefits of a fixed charging point. The wall bracket itself does not contain any components necessary for charging the vehicle, they are all in the removable part.

This makes it possible to easily remove the removable part from the wall bracket and take it with you when you travel. By using specially designed adapters, the (now mobile) charger can be used on a range of wall sockets such as those commonly used in Europe. It is of course also possible to place the charger in a similar wall bracket at a different location, which would not be unusual in a living/work situation, for example.

Description of the mechanical structure of the invention

The whole of the invention consists on the one hand of a mobile part with all internal components to charge an electric car, on the other hand the possibility of connecting to the electricity grid via a newly developed plug using specially designed adapter cables (see figure 4) or using a specially designed wall bracket (see figure 1)

The mobile part (figure 1 / item 6) features a bottom handle (figure 1 / item 4), an electrical cable leading to the vehicle (figure 1 / item 5) and a newly designed electrical connector (figure 1 / item 3) which makes electrical connection to a similar opposite pole connector {figure 1 / item 2) in the wall bracket (figure 1 / item 1) or adapter cable.

When the charger is slid into the wall bracket from the bottom, the charger will make electrical contact and be powered at the top when fully retracted, while a locking mechanism at the bottom ensures that the charger cannot be pulled out without

From WWW. XOiD. COM Thu Sep 28, 2023 9:32:09 AM CEST Page 3 of 10 3 first. This unlocking can also be blocked with a lock/key BE2022/0063 to prevent theft.

The electrical connection to the electrical mains is made in the wall bracket itself in a closed compartment to which access is gained by unscrewing the front of the wall bracket (figure 2 / item 9), after which access is gained to both the electrical connection (figure 2 / item 4) as the physical mounting points to attach the wall bracket to a wall.

The electrical connection is made via rail-mounted terminals or screw connections and can be connected single-phase or three-phase. There is also an additional connection of a calibration resistor that indicates via the connector to the removable charger which section the wall bracket was electrically connected to so that the charger can take this into account when determining the maximum charging current.

If the charger is not placed in the wall bracket, you can use it by connecting the charger to a household or industrial socket using an adapter. Adapters can be made for various worldwide sockets.

Examples of already available adapters for Schuko household and CEE industrial sockets are shown in Figure 4

The adapter cables are inserted into the male connector of the charger (figure 1 / item 3) with the specially designed female connector {figure 4 / item 1) and can thus make an electrical connection to, for example, a household socket (figure 4 / item 2 ), a single-phase CEE socket (figure 4 / item 3) or a multi-phase CEE socket (figure 4 / item 4). Suitable adapters can be made for different countries and standards.

The mobile part (figure 1 / item 6) consists of a lower housing (figure 3 / item 1) containing the base PCB with the relays, connections for the power cables and a power supply (figure 3 / item 2), a PCB with on it the loss of current detection (figure 3 / item 4), a PCB containing all components for the applicative applications of the charger (figure 3 / item 3) and a lid that makes the whole thing watertight (figure 3 / item 9).

The power supply is provided via a specially designed connector (figure 3 / item 15) and the cable leading to the cart is connected via a waterproof gland (figure 3 / item 11).

Description of the functional structure of the invention

The wall bracket as described above only contains mechanical parts and connections for the electricity grid. In addition to the connections for earthing, neutral conductor and 3 phases, there is also a connection for a calibration resistor, where the calibration resistor is

From WWW. XOiD. COM Thu Sep 28, 2023 09:32:09 AM CEST Page 4 of 10 4 be connected in such a way that the mobile part that is in the wall bracket | BE2022/0063 knows with which section of electricity cable the connection was provided (usually 2.5mm? or 6mm?) so that the charger can take this into account when determining the maximum current that may be requested from the connection. The calibration resistor is connected to the wall bracket together with the ground, allowing the mobile charger to measure a certain resistance between ground and the pin to which the resistor is connected.

The mobile part (see figure 3) contains all electronic components and software to make it function. The charger works according to the mode 3 charging protocol and complies with all regulations and standards applicable to these types of devices.

Adapter cables (see figure 4) When the mobile part is used without the wall bracket, a matching adapter cable must be used. These adapter cables are specially designed and, just like the wall bracket, have a built-in calibration resistance that is different for each type of adapter cable so that the mobile part knows by reading the resistance the maximum power it can charge with. The connectors of the adapter cables were specially designed for this purpose.

Claims (1)

From WWW. XOiD. COM Thu Sep 28, 2023 09:32:09 AM CEST Page 5 of 10 Lonciusies BE2022/0063 1. A patent is being applied for for the following new design and techniques/methods: In contrast to the current range of charging points that are either fixed or mobile, a new device is being designed here that can be used as both a fixed charging point and a mobile charger due to the design to be constructed as follows: A charging device consisting of a fixed wall bracket (fig 1/1) including electrical connections (fig 1/2), a mobile part (fig 1/6) containing all components for charging an electric or hybrid vehicle and adapter cables (fig 4) When using the fixed wall bracket (fig 1/1), the mobile part (fig 1/6) must be inserted from the bottom upwards into the fixed wall bracket, ensuring an electrical connection is made when the mobile part is clicked completely into the fixed part using the connector in the wall bracket (fig 1/2) and the connector in the mobile part (fig 1/3). At that moment, the mobile part is locked in place by a locking mechanism. kept in place, secured by a lock and key. The whole now forms a permanent charging point. If a user wants to take his charger with him when traveling, he must remove the mobile part (fig 1/6) from the fixed wall bracket (fig 1/1) by unlocking the locking mechanism and sliding the mobile part out of the fixed wall bracket from the bottom. The mobile part (fig 1/6) must now be connected to a chosen electrical contact point using an adapter cable (fig 4). This construction method means that the charging device can be used both as a fixed charging point and as a mobile charging point.