DE102020203125A1 - Battery post clamp - Google Patents

Abstract

Battery pole clamp (10), in particular for a vehicle battery (12) in a vehicle, with a clamping section (24) for a battery pole (14) of the vehicle battery (12), which has an in particular essentially cylindrical receiving space (20) for the battery pole ( 14) encloses the vehicle battery (12) at least in sections in the circumferential direction and has an interruption (26) with mutually facing edges (28, 30) in the circumferential direction, a first receptacle (32) on a first edge (28) of the clamping section (24) for a clamping means (36) and on a second edge (30) of the clamping section (24) a second receptacle (34) for the clamping means (36) are provided, the first receptacle (32) having a first support surface (62) for the clamping means (36) and the second receptacle (30) has a second support surface (76) for the clamping means (36), the first support surface (62) and the second support surface (76) being inclined relative to one another, wherein between the first support surface and the second support surface is provided with a support element on which the clamping means is supported transversely to its longitudinal axis.

Description

The invention relates to a battery pole clamp, in particular for a vehicle battery in a vehicle.

Battery sensors are used in vehicles to obtain information about the battery status, for example the battery charge status. The battery sensor is usually attached to one of the battery poles of the vehicle battery, in particular to the negative pole of the vehicle battery. For this purpose, the battery sensor usually has a battery post clamp which is plugged onto the battery post and clamped to it, for example by reducing the diameter of a receiving space for the battery post via a tensioning means.

The battery pole clamp must ensure a reliable hold of the battery sensor on the vehicle battery, in particular on the battery pole, in order to ensure a reliable power supply for the consumers in the vehicle and a reliable determination or detection of the battery status.

Furthermore, simple assembly of the battery pole clamp on the battery pole, in particular easy accessibility of the clamping means with a tool, is desirable. The battery pole is usually arranged in a pole which is formed by a cuboid recess at a corner of the vehicle battery. The battery pole extends from a rectangular base area of the poles, starting from a battery pole socket, perpendicular to the base area into the recess. The accessibility of the battery pole clamp is restricted by the poles of the vehicle battery and other components in the engine compartment.

In a simple embodiment, the tensioning means is a screw which extends in the circumferential direction with respect to the receiving space. The accessibility of the screws, in particular with a tool, is very limited in this embodiment at the battery terminal. Alternatively, it is known to arrange the screw at an angle, in which case accessibility may also be restricted here.

The prior art also discloses battery post clamps with a tensioning means arranged in the longitudinal direction of the receiving space, the tensioning force of the tensioning means acting in the longitudinal direction of the receiving space having to be transferred via intermediate elements into a clamping force acting radially with respect to the receiving space. Due to the additional intermediate elements, the structure and thus the assembly of this battery pole clamp is more complex.

The object of the invention is to provide a battery pole clamp with a simple structure that enables simple assembly with high clamping force on a vehicle battery.

To achieve the object, a battery pole clamp is provided, in particular for a vehicle battery in a vehicle, with a clamping section for a battery pole of the vehicle battery, which encloses an in particular essentially cylindrical receiving space for the battery pole of the vehicle battery in the circumferential direction at least in sections and in the circumferential direction an interruption with mutually facing edges, a first receptacle for a clamping device being provided on a first edge of the clamping portion and a second receptacle for the clamping device being provided on a second edge of the clamping portion, the first receptacle having a first support surface for the clamping device and the second receptacle being a having a second support surface for the clamping means, wherein the first support surface and the second support surface are inclined relative to one another. A support element is provided between the first support surface and the second support surface, on which the clamping means can be supported transversely to its longitudinal axis.

The tensioning means is designed to be curved, for example, so that it runs essentially at right angles to the respective support surface in the region of the support surfaces. The support surface on which a tool is placed in order to preload the clamping means is usually inclined in such a way that it can be placed more easily on the clamping means when the battery terminal clamp is mounted on the battery terminal. For this purpose, the support surface is usually aligned in such a way that the tool can be placed at an angle from above. The other support surface is usually more inclined, so it forms a smaller angle with the longitudinal axis of the receiving space. As a result, the clamping means runs predominantly in the circumferential direction, as a result of which a greater force can be applied to the clamping section in the circumferential direction. Due to the different alignment in the support surface and the curvature of the tensioning device, a direct line of force acts when the tensioning device is tensioned, which line runs essentially in a straight line between the first support surface and the second support surface and does not follow the curvature of the tensioning device. The support element is arranged so that it supports the clamping means on the side facing the imaginary straight line between the two support surfaces, so that the support element prevents the clamping means from bending in the direction of the straight line between the two support surfaces when the clamping device is tensioned. The support element thus forms a force deflection element in order to circumferentially apply the clamping force, which is applied to the first support surface with the tool redirect. This reliably prevents deformation of the battery bridge or the clamping device and increases the clamping force.

For example, the support element can be provided on one of the receptacles. This means that the support element protrudes from one of the receptacles, for example as a projection. As a result, no additional structural measures are required to hold the support element in the desired position. If the support surfaces are moved towards one another by the clamping of the clamping device, the supporting element is carried along automatically so that it is always in the correct position in relation to the clamping device in order to effect an ideal deflection of the force.

For example, the support element is a projection protruding into the gap between the support surfaces. Alternatively, the support element can also be a collar which protrudes from one support surface in the direction of the other support surface and is formed, for example, around a recess for the clamping means. In particular, the support element can have a guide for the clamping means, for example in the form of a groove or a recess.

The first receptacle and the second receptacle can be designed in one piece with the clamping section and, in particular, can be produced in a forming process. In particular, the support element can be produced in one piece with one of the receptacles and produced by a forming process. The battery pole terminal is, for example, punched out in one piece from a sheet metal and is shaped by reshaping, in particular shaped by a deep-drawing process and / or bending processes. Subsequent, complex joining processes, for example welding, riveting or soldering, are thus eliminated, so that the manufacturing costs of the battery pole terminal can be reduced. Additional elements can be provided on the receptacles in order to increase the stability of the receptacles, in particular the flexural rigidity.

Preferably, a tensioning means is provided with a first tensioning element that is supported on the first support surface and with a tensioning element that is supported on the second support surface and is connected to the first tensioning element.

The clamping element preferably has an internal thread and the first clamping section has an external thread corresponding to the internal thread.

The clamping member is, for example, a bolt, with a first clamping section and a second clamping section, a curved area being provided between the first clamping section and the second clamping section and the first clamping section and the second clamping section being angled relative to one another. The support element supports the tensioning member, preferably in the area of the curved section, as a result of which an ideal force diversion takes place.

Furthermore, at least one first holding section and / or at least one second holding section can be provided on the second holding fixture. The holding sections can fix the clamping device or a clamping element of the clamping device on the first and / or the second support surface, in particular in the direction of a longitudinal axis of the clamping device in the area of the first or the second support surface and / or perpendicular to the first or the second support surface. The holding sections can also fix the clamping means or the clamping element in a rotationally fixed manner with respect to the longitudinal axis. In particular, the holding sections are produced by a forming process. The holding sections can form a securing device for the clamping means, in particular for the respective clamping element, which prevents the clamping means or the clamping element from being lost. Furthermore, an anti-rotation device can be formed by the holding section, which prevents the clamping element or the clamping member from rotating about the respective longitudinal axis. This is particularly necessary if the tensioning element has a thread, since at least the tensioning element or one of the tensioning elements must be secured against twisting in order to enable the tensioning elements to be screwed onto the tensioning element.

In addition, the holding section can fix the clamping means, in particular the clamping elements, in the direction of the longitudinal axis on the respective support surface, that is to say form a stop for the clamping means, in particular the respective clamping element. The clamping elements can thus be fixed to support elements in both directions. If the battery post clamp is installed, the tensioning elements are moved onto the support surfaces and push them against one another, so that the receiving space is reduced and the battery post clamp is thus clamped to the battery post. To dismantle the battery pole clamp, the tensioning elements are pushed in the opposite direction, with these resting on the holding sections and pushing them apart. Thus, the receptacles in which the holding sections are provided are also forced apart, so that the receptacle space of the battery post is forcibly opened. This makes it easier to remove the battery post clamp from the battery post.

The angle at which the first support surface is inclined to the longitudinal axis of the receiving space is preferably between 35 ° and 55 °, in particular 45 °. This ensures that the first support surface or the clamping means that is supported on a first support surface can be easily reached with a tool. In addition, at these angles, the curved region can cause a force diversion in the circumferential direction of the receiving space, by means of which an ideal force can be applied in the circumferential direction.

The angle at which the second support surface is inclined to the longitudinal axis of the receiving space is preferably shallower than the angle at which the first support surface is inclined to the longitudinal axis of the receiving space in order to effect a diversion of forces in the circumferential direction. For example, the angle is between 25 ° and 45 °, in particular 34 °.

To achieve the object, a battery sensor for detecting at least one battery parameter is also provided, with a connection and / or a measuring device being provided on the battery pole terminal through which the battery current flows. For example, the measuring device has a measuring resistor and a voltage detection device for detecting the voltage drop across the measuring resistor. The electrical resistance of the measuring resistor is known very precisely, so that the current flowing through the measuring resistor and thus through the battery sensor can be calculated from the electrical resistance and the measured voltage drop using Ohm's law.

• 1 eine perspektivische Ansicht einer erfindungsgemäßen Batteriepolklem me;
• 2 eine zweite perspektivische Ansicht der Batteriepolklemme aus 1;
• 3 eine erste perspektivische Ansicht einer zweiten Ausführungsform einer erfindungsgemäßen Batteriepolklemme;
• 4 eine zweite perspektivische Ansicht der Batterieprogramme aus 3;
• 5 eine schematische Darstellung der Batterieburg (aus 1 an einer Fahrzeugbatterie).

Further advantages and features emerge from the following description in conjunction with the accompanying drawings. These show:

• 1 a perspective view of a Batteriepolklem according to the invention me;
• 2 a second perspective view of the battery post terminal 1 ;
• 3 a first perspective view of a second embodiment of a battery post according to the invention;
• 4th a second perspective view of the battery programs 3 ;
• 5 a schematic representation of the battery castle (from 1 on a vehicle battery).

In the 1 and 2 is a battery post clamp 10 for mounting on a vehicle battery 12th (please refer 5 ) shown. The vehicle battery 12th usually has two battery poles 14th , of which in 5 only one battery pole 14th is shown. The battery pole 14th is in a Polish 16 arranged by a substantially cuboid recess on the vehicle battery 12th is formed. The battery pole 14th is essentially cylindrical and protrudes from an essentially rectangular base 18th starting from a base 19th essentially perpendicular to the Polish 16 into it.

The battery post clamp 10 has a recording room 20th for the battery pole 14th , which is essentially cylindrical. The shape of the battery post 14th resembles a truncated cone, with a larger diameter at the bottom than at the top. The battery post clamp 10 can be in an assembly direction that is essentially in the direction of the longitudinal axis 22nd of the recording room 20th and the longitudinal axis of the battery pole 14th corresponds to the battery pole 14th be postponed. About the postponement of the recording room 20th on the battery pole 14th can facilitate the recording room 20th also be slightly conical.

The recording room 20th is of a clamping section 24 in the circumferential direction with respect to the longitudinal axis 22nd at least partially enclosed, with an interruption in the circumferential direction 26th is provided by two edges 28 , 30th is limited.

At the first edge 28 is a first recording 32 and on the second edge 30th a second shot 34 for a clamping device 36 intended. With the clamping device 36 can the edges 28 , 30th are moved towards each other, so the interruption 26th and thus the recording room 20th be scaled down to the battery post clamp 10 on the battery pole 14th to jam.

The clamping device 36 has an elongated tendon 38 as well as a clamping element 40 on. The tendon 38 has a first clamping section 44 with a longitudinal axis 46 and a second clamping section 48 with a longitudinal axis 50 . On the first clamping section 44 is an external thread 52 intended. Between the clamping sections 44 , 48 is a curved area 54 intended. The clamping element 40 points to the external thread 52 Corresponding internal thread 56 on.

As in the 1 and 2 can be seen is the clamping section 24 formed in one piece, in particular made from a flat sheet metal by forming.

The first shot 32 has a first support surface 58 on which the first clamping element 40 rests against and is supported on this. The first support surface 58 is in this embodiment by a first bent over section of the clamping section 24 educated. In the first shot 32 is a recess 60 for the clamping device 36 educated.

The second shot 34 is also through a bent sheet metal section of the clamping section 24 formed, with a second support surface 62 is formed on a first side of the sheet metal section. The second shot 34 has a recess 64 on for the clamping device 36 on.

As in the 1 and 2 can be seen is the first support surface 58 with respect to the longitudinal axis 22nd of the recording room 20th arranged inclined, in particular at an angle between 40 ° and 50 °, in particular 45 °. The second support surface 62 is to the longitudinal axis 22nd of the recording room 20th at an angle between 30 ° and 40 °, in particular 34 °, inclined.

The curved area 54 of the tendon 38 is designed so that a flange 66 of the clamping element 40 and one on the tendon 38 intended head 68 each flat on the first support surface 58 and the second support surface 62 rest, with the tendon 36 through the recesses 60 , 64 extends. The angle at which the longitudinal axes 46 , 50 of the first clamping section 44 and the second clamping section 48 are arranged to one another, corresponds accordingly to the angle between the first support surface 58 and the second support surface 62 .

The angles of the first support surface 58 and the second support surface 62 can be selected according to the technical requirements. At a larger angle between the first support surface 58 and the longitudinal axis 22nd is a better accessibility of the clamping element 40 secured with a tool (see 3 ). With a shallower angle of the second support surface 62 the proportion of through the tendon increases 38 or the clamping device 36 applied clamping force in the circumferential direction of the clamping portion 24 works.

To provide a compromise between these two requirements, the tendon is 38 curved so that the clamping element 40 due to a larger angle between the support surface 58 and the longitudinal axis 22nd is easier to achieve with a tool, and because of the smaller angle between the support surface 62 and the longitudinal axis 22nd a greater clamping force can be applied.

As in the 1 and 2 can be seen is between shots 32 , 34 a support element 70 provided that by one at the first inclusion 32 provided projection is formed in the space between the first receptacle 32 and the second shot 34 is bent. As in particular in 1 can be seen, the tendon is supported 36 with the curved area 54 on this support element 70 away.

Will the battery post clamp 10 on a battery post 14th mounted, this is with the recording room 20th on the battery pole 14th postponed. Then the clamping element 40 with one tool 76 on the tendon 38 unscrewed, so that initially a tensioning force is applied to the battery post in the longitudinal direction of the first tensioning section. Through the support element 70 the clamping force is deflected in the direction of the second clamping section 48 , whereby the clamping force acts mainly in the circumferential direction. Due to the support on the support element 70 the tendon cannot move in the direction of the direct connection between the first recess 60 and the second recess 64 evade so that a sufficiently high and constant clamping force can always be applied to the clamping section.

As in the 1 and 2 can be seen are on the first support surface 58 first holding sections 72 provided having a flange 66 of the clamping element 40 reach around and thus the clamping element 40 longitudinal 46 on the first support surface 58 fix.

On the second support surface 62 are two second holding sections 74 provided by bent areas of the second support surface 62 are formed. These first holding sections 72 embrace the head 68 of the tendon 38 so that the tendon 38 perpendicular to the second support surface 62 is fixed. The second holding sections are also located 74 on one on the outer circumference of the head 68 arranged torque transmission profile, so that the tendon 38 cannot be rotated about its longitudinal axis.
The first holding sections 72 are made shorter than the second holding sections 74 so that the clamping element 40 can be rotated about its longitudinal axis in order to apply a clamping force to the clamping section 24 to be able to raise.

The holding sections 72 , 74 are preferably after inserting the clamping device 36 in the recordings 32 , 34 produced by bending the corresponding sections. This makes it easy to assemble the clamping device 36 as well as a reliable hold of the clamping device after bending 36 , especially the clamping element 40 secure.

The support element 70 can be designed in any way. It is only necessary to ensure that the support element 70 evasion of the clamping device, in particular the tendon 38 reliably prevented.

Furthermore, the support element is 70 preferably on the first support surface 58 or the second support surface 62 provided so this when recording 32 , 34 to move towards each other by the tensioning of the tensioning means, is automatically tracked and the tendon is always with the curved area on the support element 70 can support.

In the 3 and 4th is the support element 70 for example by one around the recess 64 running collar formed.

List of reference symbols

10

Battery post clamp

12th

Vehicle battery

14th

Battery pole

16

Polish

18th

Floor space

19th

base

20th

Recording room

22nd

Longitudinal axis of the receiving space

24

Clamping section

26th

Interruption

28

first edge

30th

second margin

32

first shot

34

second shot

36

Clamping device

38

Tendon

40

Clamping element

44

first clamping section

46

Longitudinal axis of the first clamping section

48

second clamping section

50

Longitudinal axis of the second clamping section

52

External thread

54

curved area

56

inner thread

58

first support surface

60

Recess

62

second support surface

64

Recess

66

flange

68

head

70

Support element

72

first holding sections

74

second holding sections

76

tool

Claims (11)

Battery pole clamp (10), in particular for a vehicle battery (12) in a vehicle, with a clamping section (24) for a battery pole (14) of the vehicle battery (12), which has an in particular essentially cylindrical receiving space (20) for the battery pole ( 14) encloses the vehicle battery (12) at least in sections in the circumferential direction and has an interruption (26) with mutually facing edges (28, 30) in the circumferential direction, a first receptacle (32) on a first edge (28) of the clamping section (24) for a clamping device (36) and on a second edge (30) of the clamping section (24) a second receptacle (34) for the clamping device (36) is provided, the first receptacle (32) having a first support surface (62) for the clamping device (36) and the second receptacle (30) has a second support surface (76) for the clamping means (36), the first support surface (62) and the second support surface (76) being inclined relative to one another, characterized in that between de A support element is provided on the first support surface and the second support surface, on which the clamping means is supported transversely to its longitudinal axis. Battery post clamp Claim 1 , characterized in that the support element is provided on one of the receptacles (32, 34). Battery pole terminal according to one of the preceding claims, characterized in that the first receptacle (32) and the second receptacle (34) are formed in one piece with the clamping section (24) and are in particular produced in a forming process. Battery pole terminal according to one of the preceding claims, characterized in that a tensioning means (36) is provided, with a first tensioning element (40) that is supported on the first support surface (62), a second tensioning element (42) that is supported on the second Support surface (76) supported, and with a clamping member (38) that the first clamping element (40) and the second clamping element (42) connects. Battery post clamp Claim 4 , characterized in that the clamping member (38) is a bolt, with a first clamping section (44) which cooperates with the first clamping element (40) and a second clamping section (48) which cooperates with the second clamping element (42), wherein the longitudinal axes (46, 50) of the first clamping section (44) and of the second clamping section (48) are angled relative to one another, the bolt being supported on the support element. Battery post clamp Claim 5 , characterized in that the first clamping element (40) and / or the second clamping element (42) have an internal thread and the first clamping section (44) and / or the second clamping section (48) each have an external thread (52, 54) corresponding to the internal thread . Battery post clamp according to one of the Claims 5 and 6th , characterized in that the clamping member (38) has an intermediate section (56) arranged between the first clamping section (44) and the second clamping section (48), the intermediate section (56) having a curved region (58) which is located on the support element supports. Battery pole terminal according to one of the preceding claims, characterized in that at least one first holding section (90) and / or at least one second holding section (96) is provided on the first receptacle (32) and / or at least one second holding section (96) is provided on the first receptacle (32), the holding sections (90, 96) fix the clamping device (36) or a clamping element (40, 42) of the clamping device (36) to the first and / or the second support surface (62, 76), in particular in the direction of a longitudinal axis (46, 50) of the clamping device (36) ) fixed in the area of the first or second support surface (62, 76) and / or perpendicular to the first or second support surface (62, 76) and / or fixed in a rotationally fixed manner with respect to the longitudinal axis (46, 50), the holding sections (90, 96) is made in particular by a forming process. Battery pole terminal according to one of the preceding claims, characterized in that the angle at which the first support surface (62) is inclined to the longitudinal axis (22) of the receiving space (20) is between 35 ° and 55 °, in particular 45 °. Battery pole terminal according to one of the preceding claims, characterized in that the angle at which the second support surface (62) is inclined to the longitudinal axis (22) of the receiving space (20) is between 25 ° and 45 °, in particular 34 °, in particular the angle at which the second support surface (76) is inclined to the longitudinal axis (22) of the receiving space (20) is greater than the angle at which the first support surface (62) is inclined to the longitudinal axis (22). Battery sensor for detecting at least one battery parameter, on a battery pole terminal according to one of the preceding claims, wherein a connection and / or a measuring device is provided through which a battery current flows.

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