DE102008024007B4 - Accumulator unit and electric vehicle equipped therewith - Google Patents

Abstract

Accumulator unit (A ') for an electric vehicle (RL), wherein the accumulator unit (A') is designed as a detachable from the electric vehicle (RL) and portable unit and has a housing (G) whose shape to an in the electric vehicle (RL) provided receiving device (AV ') is adapted, which serves for mechanically receiving at least a portion of the housing (G), wherein the housing (G) of the accumulator unit (A') on its upper side at least one carrying handle (GR), wherein at least two electrical connectors (S1 ', S2') are provided, of which a first electrical connector (S1 ') is arranged on the upper side of the housing (G), and a second electrical connector (S2') is arranged on the underside of the housing (G), wherein the receiving device (AV ') also serves for the electrical connection of the accumulator unit (A'), characterized in that arranged on the underside of the housing (G) second connector (S2 ') is arranged in a provided on the bottom housing recess (GA),

Description

The invention relates to an accumulator unit according to the preamble of claim 1 and an electric vehicle equipped therewith according to the preamble of claim 9.

The use of electric drives in vehicles is becoming increasingly important. In addition to electric cars, there are also more and more electric vehicles equipped with two-wheelers, especially in the form of electric scooters, on the market. To drive increasingly powerful batteries, such. However, they also need to be recharged from time to time. Since in particular with an electric scooter usually no generator for charging the accumulator is provided, the accumulator or the accumulator unit must be connected for charging with a suitable external charger.

Usually, the accumulator units are permanently mounted in the electric vehicle and should be removable only for workshop personnel or expert users or be removed from the electric vehicle. The conventional accumulator unit has a connector for connection to an external charger. Often, the connector is formed as a mounted on the housing of the vehicle socket, which is easily accessible from the outside. For charging, the user only needs to insert the appropriate plug of the charger into the socket.

However, there is often the problem that there is no mains connection for the charger available on site. Is z. B. the electric vehicle or the electric scooter on a public car park or parking space of a tenement (backyard, underground parking, etc.), so the user is usually no power connection available. Thus, the user can not charge the battery or may only try to connect to the mains via an extension cable. It would be desirable to have a more workable and less expensive solution.

From the DE 601 31 124 T2 are known an accumulator unit and an electric vehicle equipped therewith. The accumulator unit (see Insbes. 7 and 15 ) is designed as a detachable from the electric vehicle and portable unit and has a housing whose shape to a provided in the electric vehicle recording device (battery box 16 in 7 ) adapted to mechanically receive at least a portion of the housing. The housing of the accumulator unit has on its upper side at least one carrying handle, wherein at least two electrical connectors are provided, of which at least one first electrical connector is arranged on the upper side of the housing (see. 43 " in 7 ), and at least a second electrical connector is arranged on the underside of the housing (s. 47 " in 7 ), and wherein the receiving device also serves to electrically connect the accumulator unit. The local construction of the battery box (see " 16 " in 7 ) has a concavity in which connectors (" 49 ") Arranged with the second connectors (" 47 ") Of the accumulator unit must be brought into contact. This requires precise handling by the user when inserting the accumulator unit into the battery box.

The DE 603 00 636 T2 discloses an accumulator unit and an electric vehicle equipped therewith. The accumulator unit (see esp. 9 ) has a charge port " 117 On top of the case, which EP 1 215 111 A1 discloses an accumulator unit and an electric vehicle equipped therewith. The connectors or connectors are located on the top or the case (see " 18a . 18b " in 4 ).

It is therefore an object of the invention to improve an accumulator unit of the type mentioned in that at any time a user-friendly charging of the accumulator unit is possible. Also, an electric vehicle is to be proposed that with such a rechargeable battery. Unit can be equipped.

The object is achieved by an accumulator unit with the features of claim 1 or by an electric vehicle having the features of the independent claim 9.

Accordingly, an accumulator unit is proposed with a housing whose shape is adapted to a provided in the electric vehicle recording device, which serves for mechanically receiving at least a portion of the housing, wherein arranged on the underside of the housing second connector in a on the Bottom provided housing recess is arranged.

Accordingly, the receiving device AV 'is formed with a bulge matching a provided on the underside of the housing housing recess in which the second connector is arranged. Thus, a particularly fast replaceable battery system for an electric scooter is created. The accumulator unit according to the invention, which is also referred to below as the battery unit can be easily removed for charging by the user from the electric vehicle, carried to a remote charger and connected there, and after charging again for Electric vehicle brought back and used there again.

It can thus be realized, for example, a very user-friendly removable battery system for an electric scooter. The storage medium for the electricity is preferably a lithium-polymer battery. The battery is z. B. integrated in a plastic box, which serves to protect the battery during transport. This battery unit or battery box is z. B. used in the electric scooter below the seat in a guided holder of the recording device and is thus fixed there, in particular by positive engagement quickly releasably. Preferably, the receiving device also serves for the electrical connection of the battery unit to an electric drive or motor of the vehicle.

The battery unit preferably has at least two electrical connectors, one of which is preferably used for connection to the electric drive of the vehicle and another is used for connection to an external charger. In this case, the plug connector for the charger is preferably connected to a control circuit provided in the battery unit, which controls the charging of the battery located in the battery unit. The connector for the electric drive can be connected directly to the battery, This connector or the other can also be arranged on the underside of the housing of the battery unit.

These and other particularly advantageous embodiments of the battery unit or battery box presented here emerge from the subclaims:

Accordingly, at least one of the two electrical connectors can be arranged on the upper side of the housing. In addition, at least one of the connectors arranged on the upper side of the housing can be connected to a cable which protrudes from an opening on the upper side of the housing.

Also, at least one of the two electrical connectors can be arranged on the underside of the housing.

In the accumulator unit, it is advantageous if it has an accumulator and an associated control circuit which controls at least the charging of the accumulator, wherein the control circuit is preferably integrated in the accumulator. Also, the housing of the battery unit may be formed integrally with the housing of the accumulator and / or the control circuit connected thereto.

The electric vehicle proposed here has accordingly receiving device which serves at least for the mechanical recording of such a battery unit, which is designed as a detachable from the electric vehicle and portable unit, wherein the receiving device has a shape to the housing of the Accumulator unit is adapted, and wherein the receiving device receives at least the bottom of the accumulator unit, so that it can be removed by means of a provided on the top handle from the device.

The invention will now be further described by means of embodiments, reference being made to the following accompanying schematic drawings:

1 shows the embodiment of an electric scooter with replaceable removable battery;

2a shows an accumulator unit or a removable battery in a first embodiment;

2 B shows a provided for this purpose on the electric scooter below the seat receiving device;

3 shows in more detail the structure of the accumulator unit 2a ;

4 shows an accumulator unit or a removable battery in a second embodiment and the matching shaped receiving device.

Like in the 1 is illustrated, the inventive electric vehicle RL with a device AV (or AV 'after 4 ) for mechanical recording and also for the electrical connection of an accumulator unit A (or A 'after 4 ) fitted. In the example of an electric scooter RL shown here, the receiving device AV (or AV ') is located below the seat SB and can thus be equipped from above with the battery unit A (or A').

As based on the 2 B and 2 B can be seen, the battery unit A (and also A ') as a removable from the receiving device AV (or AV') and portable unit configured, the device can accommodate at least the bottom of the battery unit, preferably but the battery unit can record completely. The shape of the device AV (or AV ') and the shape of the housing (G) of the battery unit are adapted to each other in order to achieve at least one stop or a releasable fixation by positive engagement. The battery unit A (or A ') has on the top of the housing G at least one carrying handle GR, so that a user simply remove the battery unit from the device and conveniently to the location of a charger or a charging station, the z. B. in the private apartment of the user, can wear. So if no electrical outlet (eg 230 volts) is present at the location of the electric scooter, the battery unit can be removed from the electric scooter RL and z. B. be charged in the apartment or office via the charger to an existing power outlet there.

The process may, for example, proceed as follows (see in particular 1 . 2a /Federation 3 ):
First, the battery unit A is still under the seat SB of electric scooter RL. There is the seat z. B. opened by means of a key and folded up to then the battery unit A, which has a battery or a battery B and a control circuit C to remove.

For this purpose, a provided on the electric scooter RL circuit interruption switch (not shown) is switched to the "OFF" position. The connector S1 between the vehicle drive (not shown) and battery unit A is disconnected. The battery unit A is removed at its carrying handle GR from the receiving device AV of the vehicle or the electric scooter RL. The battery unit A is then carried to the appropriate charger and charged there via the connector S2. Then it can be used again in the vehicle or the electric scooter RL. For this purpose, the seat SB is opened by means of the key and folded upwards. The battery unit A is then inserted and fixed in the receiving device AV and there guide. The connection plug S1 for the circuit is plugged together. Then the circuit breaker switch is switched back to "ON".

Alternatively to the embodiment that both connectors S1 and S2 are provided on the upper side of the battery unit A (see in particular. 3 ) can also be provided at least one connector on the underside of the battery unit, as in the 4A is shown.

For this purpose, a receiving device AV 'is provided on the electric vehicle, which has at least one connection for an electrical connector S2', which is arranged on the underside of the housing of the accumulator unit A '. For this purpose, the receiving device AV 'is formed with a bulge matching a provided on the underside of the housing housing recess GA. Thus, a particularly fast replaceable battery system for an electric scooter is created.

Numerous other designs and configurations are conceivable and are encompassed by the appended claims.

LIST OF REFERENCE NUMBERS

• RL

  Electric vehicle in the form of an electric scooter

  SB

  seat

  AV, AV '

  Recording device (in different versions) for accumulator unit

  A, A '

  Accumulator unit (in different versions)

  G

  casing

  GR

  handle

  B

  Accumulator or battery

  C

  control circuit

  S1, S1 '

  Connection for an external charger

  S2, S2 '

  Connection to the electric drive of the electric vehicle

Claims (9)

Accumulator unit (A ') for an electric vehicle (RL), wherein the accumulator unit (A') is designed as a detachable from the electric vehicle (RL) and portable unit and has a housing (G) whose shape to an in the electric vehicle (RL) provided receiving device (AV ') is adapted, which serves for mechanically receiving at least a portion of the housing (G), wherein the housing (G) of the accumulator unit (A') on its upper side at least one carrying handle (GR), wherein at least two electrical connectors (S1 ', S2') are provided, of which a first electrical connector (S1 ') is arranged on the upper side of the housing (G), and a second electrical connector (S2') is arranged on the underside of the housing (G), wherein the receiving device (AV ') also serves for the electrical connection of the accumulator unit (A'), characterized in that arranged on the underside of the housing (G) second connector r (S2 ') is arranged in a provided on the bottom housing recess (GA), Accumulator unit (A ') according to claim 1, characterized in that on the top of the housing (G) arranged first connector (S1') is connected to a cable which protrudes from an opening on the top of the housing (G) , Accumulator unit (A ') according to claim 1, characterized in that the second connector (S2') is provided for connection to an electric drive of the electric vehicle (RL) and the first connector (S1 ') is provided for connection to an external charger. Accumulator unit (A ') according to one of the preceding claims, characterized in that the accumulator unit (A') has an accumulator (B) and an associated control circuit (C) which controls at least the charging of the accumulator (B) , Accumulator unit (A ') according to claim 3 or 4, characterized in that the first connector (S1') is provided for connection to the external charger and is connected to the control circuit (C). Accumulator unit (A ') according to claim 4, characterized in that the second connector (S2') is provided for connection to the electric drive of the electric vehicle (RL) and is connected directly to the accumulator (B). Accumulator unit (A ') according to claim 4, characterized in that the control circuit (C) in the accumulator (B) is integrated. Accumulator unit, (A ') according to one of claims 4 to 7, characterized in that the housing (G) with the housing of a battery (B) and / or the associated control circuit (C) is integrally formed. Electric vehicle (RL) with a recording device (AV ') which serves at least for mechanical reception of an accumulator unit (A') which is designed as a removable and portable unit from the electric vehicle (RL), the receiving device (AV ') has a shape which is adapted to a housing (G) of the accumulator unit (A'), wherein the receiving device (AV ') at least the bottom of the accumulator unit (A') receives so that they can be removed from the receiving device (AV ') by means of a carrying handle (GR) provided on the upper side, and wherein the receiving device (AV') also serves to electrically connect the accumulator unit (A ') and at least one connection for an electrical connector (S2 ') disposed on the underside of the housing (G) of the accumulator unit (A'), characterized in that the receiving device (AV ') has a convexity matching one on the underside of the housing (G) of Accumulator unit (A ') provided housing recess (GA).

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