DE102017125128A1 - Battery assembly and telematics unit - Google Patents

Abstract

The invention relates to a battery assembly (1) comprising at least a first battery cell (2), a second battery cell (3), a printed circuit board (7) and a housing (5), the battery cells (2, 3) being elongate, in particular cylindrical , wherein in the housing (5) the battery cells (2, 3) and the circuit board (7) are accommodated, wherein the battery cells (2, 3) are arranged such that a central longitudinal axis (2a) of the first battery cell (2 ) and a central longitudinal axis (3a) of the second battery cell (3) parallel to each other and the circuit board (7) between the first battery cell (2) and the second battery cell (3) is arranged. Here, a first plane (E30), which is formed by a broad side (4) of the printed circuit board (7), arranged at an angle to a second plane (E23), wherein the central longitudinal axes (2a, 3a) of the battery cells (2, 3) the span second level (E23).

Description

The invention relates to a battery assembly and a telematics unit according to the preamble of claim 1 or 11.

From the CN 203 604 463 U a battery assembly is known, which comprises at least a first battery cell, a second battery cell, a printed circuit board and a housing, wherein the battery cells are elongate, in particular cylindrically shaped, wherein in the housing, the battery cells and the printed circuit board are accommodated, wherein the battery cells arranged in such a way in that a central longitudinal axis of the first battery cell and a central longitudinal axis of the second battery cell run parallel to one another and the printed circuit board is arranged between the first battery cell and the second battery cell.

It is an object of the invention to provide a battery assembly or a telematics unit with a battery assembly, which has a particularly compact structure. In particular, it is also an object of the invention to propose a battery assembly or a telematics unit with a battery assembly, in which a reliable temperature monitoring of all battery cells is particularly easy.

This object is achieved on the basis of the features of the preamble of claim 1 or 11 by the characterizing features of claim 1 or 11. In the dependent claims advantageous and expedient developments are given.

In the case of the battery assembly according to the invention, a first plane, which is formed by a broad side of the printed circuit board, is arranged at an angle to a second plane, wherein the central longitudinal axes of the battery cells span the second plane. In this way, a desired spacing of the battery cells is used to accommodate the printed circuit board, so that little additional space must be provided for housing the printed circuit board in the housing. The invention further provides that the first plane and the second plane are arranged at right angles to each other. As a result, the circuit board forms a wall between the battery cells with minimal space requirements. A rectangular arrangement of the planes also brings with it the particular advantage that both battery cells can be positioned in the same way on the side of the printed circuit board, thus simplifying assembly of the battery assembly.

Furthermore, it is provided that the first plane forms a mounting surface of the printed circuit board, on which at least a part of the electronic components is arranged. As a result, at least a part of the electronic components is likewise arranged between the battery cells, so that optimum use is made of available space between the battery cells, which is present in particular when cylindrical cylindrical cells are used.

It is also envisaged that the printed circuit board comprises connecting lines for connecting the battery cells, wherein positive poles or negative poles of the battery cells are connected via the connecting lines to the printed circuit board, wherein the connecting lines are fixed in particular by plug connections to the housing. Due to the central, central arrangement of the printed circuit board in the interior of the housing, all the poles of the battery cells can be contacted with connection lines, which are shorter than a length of the battery cells, which is measured in the direction of the longitudinal axis of the battery cell.

Furthermore, it is provided that the printed circuit board contact lines for electrical connection to an electrical device, in particular a telematics device, to deliver energy or to absorb energy, these contact lines are guided transversely to longitudinal axes of the battery cells through the housing on an outside of the housing. By such a guidance of the contact lines short contact lines are sufficient so that material and weight can be saved.

Furthermore, it is provided that the housing comprises a projection with guide ribs, wherein the contact lines are connected to the projection and form a contacting region. In this way, a kind of plug is formed, by means of which the battery assembly can be securely and easily connected to a mating connector of an electrical device.

It is also envisaged that the housing comprises at least a first housing shell and a second housing shell, wherein at least one of the housing shells comprises at least one slot, in particular formed by opposing ribs, in which the circuit board is inserted. By a multi-part design of the housing, the battery cells and the circuit board can be easily installed. Ribs can be easily and space-saving accommodate in the interior of the housing.

Furthermore, it is provided that at least one of the ribs also forms a system for a battery cell, wherein the system is designed in particular as a contact surface, wherein the contact surface is adapted in particular to a curvature of a cylindrical lateral surface of one of the battery cells. In a dual function, in which a rib both the circuit board and one of the battery cells is supported, this is particularly effective in terms of saving space.

According to an embodiment variant, it is also provided that an electronic unit comprises the printed circuit board and arranged on this electronic components, wherein the electronic unit further comprises a temperature sensor, wherein the temperature sensor is arranged in particular on the circuit board and in particular arranged such that this same distances from the first battery cell and to the second battery cell. In this way, a temperature sensor can be accommodated to save space and can be reliably measured, in particular with a single temperature sensor, a temperature of the entire system, since the monitoring is independent of which battery cell an increasing temperature is caused in a comparable accuracy.

Finally, it is provided to regulate a charging voltage when charging the battery cells and / or a discharge voltage when discharging the battery cells by means of the electronics unit in particular also temperature-controlled. As a result, both a charging process and a discharge process can be carried out particularly gently for the battery cells.

In the telematics unit according to the invention for a vehicle, which comprises a telematics device and a battery assembly in which the telematics device is connected to the power supply to an electrical system of the vehicle, in which the battery assembly is provided for powering the telematics device in case of failure of the power supply provided by the electrical system and in which the telematics device comprises at least one transmitting and receiving unit, it is provided that the battery assembly according to at least one of claims 1 to 10 is formed. This results in the telematics unit for the claims 1 to 10 listed advantages.

For the purposes of the invention, electronic components are understood to mean resistors, capacitors, controllers, light-emitting diodes, sensors and comparable components.

Further details of the invention are described in the drawing with reference to schematically illustrated embodiments.

• 1: eine Explosionsansicht einer erfindungsgemäßen Batteriebaugruppe;
• 2: eine perspektivische Ansicht der in der 1 gezeigten Batteriebaugruppe im montierten Zustand, wobei eine Montage der Sicherungsmittel noch nicht erfolgt ist;
• 3: eine perspektivische Ansicht der in der 1 gezeigten Batteriebaugruppe im vollständig montierten Zustand;
• 4: eine perspektivische Ansicht der Elektronikeinheit der in der 1 gezeigten Batteriebaugruppe;
• 5: eine perspektivische Ansicht der in die untere Gehäuseschale eingebetteten Elektronikeinheit;
• 6: eine perspektivische Ansicht der in die untere Gehäuseschale eingebetteten Elektronikeinheit bei eingesetzten Batteriezellen und
• 7: eine schematische Darstellung eine Telematikeinheit.

Hereby shows:

• 1 an exploded view of a battery assembly according to the invention;
• 2 : a perspective view of the in the 1 shown battery assembly in the assembled state, with an assembly of the securing means has not yet taken place;
• 3 : a perspective view of the in the 1 shown battery assembly in the fully assembled state;
• 4 : A perspective view of the electronics unit in the 1 shown battery assembly;
• 5 a perspective view of the embedded in the lower housing shell electronics unit;
• 6 FIG. 2: a perspective view of the electronics unit embedded in the lower housing shell with inserted battery cells and
• 7 : a schematic representation of a telematics unit.

In the 1 is a battery assembly according to the invention 1 shown in exploded view. The battery assembly 1 includes a first battery cell 2 , a second battery cell 3 , an electronics unit 6 and a housing 5 , The electronics unit 6 includes a printed circuit board 7 and on this arranged electronic components 8th (see also 4 and 5 , where the components 8th only by way of example with reference numerals). The housing 5 includes a first, lower housing shell 9 and a second upper housing shell 10 as well as two securing means 11 . 12 , which by closed to tape strips of tape 13 . 14 are formed. The electronics unit 6 also includes connecting cables 15a . 15b . 16 , which are used to connect the battery cells 2 . 3 to the electronics unit 6 are provided. Furthermore, the electronic unit includes 6 Contact lines 17 . 18 . 19 . 20 and 21 , which is for the electrical connection of the battery assembly 1 to a in the 7 schematic illustrated electrical device 101 serve.

In the 2 is the battery assembly 1 excluding the securing means 11 . 12 shown in assembled condition in perspective view. In this view, it can be seen that the upper housing shell 10 with a molded tab 22 positively with the lower housing shell 9 connected, with the tab 22 this a recess 22a and the lower housing shell 9 this a wedge-like projection 23 (see also 1 ). Opposite to the tab 22 and the lead 23 are on the housing shells 9 . 10 another tab and another projection arranged so that the housing shells 9 . 10 on opposite lateral sides 25 . 26 of the housing 5 connected to each other.

In the 3 is the battery assembly 1 then shown in a fully assembled condition in which the securing means 12 . 13 that from the two housing shells 9 . 10 composite housing 5 embrace so that the detent connected housing shells 9 . 10 can not be separated even when shaken. The housing shells 9 . 10 are interconnected by mutually overlapping edge portions and / or a seal, not shown, such that an interior space 24 (please refer 6 ) of the housing 5 towards an environment U is sealed watertight.

In the 4 . 5 and 6 is now shown in steps a kind of assembly process. In the 4 are on the circuit board 7 the electronic components 8th recognizable. Furthermore, the connection cable 15a and 15b with the circuit board 7 connected so that these used in battery cells 2 . 3 with a plus pole 27a the first battery cell 2 and a negative pole 28b the second battery cell 3 is connected (see also 1 ). Here are the series-connected battery cells 2 . 3 with a negative pole 27b the first battery cell 2 and a positive pole 28a the second battery cell 3 via the connecting cable 16 connected (see also 1 ), which - as in the 5 shown - on the lower housing shell 9 is fixed and no electrical contact to the circuit board 7 having. The contact lines 17 to 21 are with the circuit board 7 electrically connected so that over this the electronics unit 6 electrical energy can be supplied or removed from this. The electronics unit 6 forms a circuit 29 optionally charging or discharging the battery cells 2 . 3 allows. It is provided that the electronic unit 6 a discharge voltage when discharging the battery cells 2 . 3 regulates and thus works as a boost converter, which one of the battery cells 2 . 3 Provided voltage increased. According to one embodiment, it is also provided that the electronic unit 6 optionally a charging voltage when charging the battery cells 2 . 3 or a discharge voltage when discharging the battery cells 2 . 3 regulates.

after the 5 shows like the electronics unit 6 and in particular its printed circuit board 7 with the lower housing shell 9 connected, shows the 6 the in the 5 shown arrangement in about 180 ° about a vertical axis HA (please refer 5 ) rotated view of inserted battery cells 2 . 3 , Here are the battery cells 2 . 3 according to the in the 5 arrows shown II . III to the electronics unit 6 pushed sideways.

Accordingly - as from the 6 it can be seen - the electronics unit 6 between the first battery cell 2 and the second battery cell 3 arranged. Here are the battery cells 2 . 3 designed as a cylinder-shaped battery cells. The battery cells 2 . 3 are aligned so that a central longitudinal axis 2a the first battery cell 2 and a central longitudinal axis 3a the second battery cell 3 parallel to each other. The cylinder-shaped battery cells, in particular in the design of AA cells or AAA cells are formed. The cylinder-like shape results in parallel battery cells between their convex curvature opposite jacket sections considerable space, which can be described in geometric approximation by two hollow sections with triangular-like cross-section. If the battery cells are slightly spaced from each other, which is regularly the case with battery modules in order to avoid excessive heating of the battery cells, there is a free space between the two battery cells, through which the construction spaces described as hollow profiles can be connected and which in particular for carrying out the PCB of the electronics unit is suitable.

The battery cells 2 . 3 and the electronics unit 6 are aligned so that a mounting surface 30 (see also 5 ) of the circuit board 7 passing through a broadside 4 the circuit board 7 is formed and on which at least a part of the electronic components 8th is arranged a first level E30 defined, this first level E30 perpendicular to one through the central longitudinal axis 2a first battery cell 2 and the central longitudinal axis 3a the second battery cell 3 defined and spanned second level E23 stands. Here are both central longitudinal axis 2a and 3a in the second level E23 ,

Alternatively, the orientation of the circuit board can be 7 the electronics unit 6 to the battery cells 2 . 3 also describe that through the broadside 4 the circuit board 7 educated first level E30 parallel to a third imaginary plane E2a , in which the central longitudinal axis 2a the first battery cell 2 lies, and parallel to a fourth, imaginary plane E3a , in which the central longitudinal axis 3a the second battery cell 3 lies, is aligned.

From a synopsis of 2 and 6 it can be seen that contact lines 17 to 21 transverse to the longitudinal axes 2a . 3a the battery cells 2 . 3 through the housing 5 through to an outside 31 of the housing 5 are guided. Here, the housing has 5 a lead 32 on which guide ribs 33 (only exemplarily with reference numerals) includes. The contact lines 17 to 21 are with the lead 32 connected and form a contact area 34 ,

The lower housing shell 9 , which forms a carrier element, comprises two by opposed ribs 35 . 36 such as 37 . 38 formed slots 39 or. 40 into which the circuit board 7 is plugged in (see in particular 1 and 5 ).

Ribs 35 . 37 or. 36 . 38 each form a plant for the battery cell 2 or. 3 , The system is designed as a contact surface and a curvature of a cylindrical lateral surface M2 or. M3 the battery cells 2 or. 3 adapted (see in particular 1 and 5 ).

According to an embodiment variant, the electronic unit comprises 6 also a temperature sensor 41 (please refer 5 ). This one is on the circuit board 7 arranged so that this same distances from the first battery cell 2 and to the second battery cell 3 having.

In the 7 is a schematic representation of the in the 1 to 6 shown battery assembly 1 together with the mentioned electrical device 101 shown to which the battery assembly 1 connected. The electrical device 101 is as a telematic device 102 educated. The telematics device 102 and the battery assembly 1 form a telematics unit 103 for a vehicle 106 , The telematics device 102 is for power supply to an electrical system 105 of the vehicle 106 connected, the battery assembly 1 for power supply of the telematics device 102 in case of failure of the electrical system 105 provided energy supply is provided. The telematics device 102 comprises at least one transmitting and receiving unit 104 ,

LIST OF REFERENCE NUMBERS

1

battery assembly

2

first battery cell

3

second battery cell

4

Broadside of 7

5

casing

6

electronics unit

7

circuit board

8th

electronic component

9

first, lower housing shell

10

second, upper housing shell

11, 12

securing means

13, 14

adhesive tape strips

15a, 15b, 16

connecting cable

17 - 21

Contact line

22

Tab at 10

22a

Recess at 22

23

wedge-shaped lead 9

24

Interior of 5

25, 26

Transverse side of 5

27a

Positive pole of 2

27b

Negative pole of 2

28a

Positive pole of 3

28b

Negative pole of 3

29

circuit

30

mounting surface

31

Outside of 5

32

Ahead of 5

33

Guide ribs of 32

34

contacting

35, 36

rib

37, 38

rib

39

Slot wipe 35, 36

40

Slot between 37, 38

41

temperature sensor

101

electric device

102

telematics device

103

telematics unit

104

Transmitting and receiving unit

105

board network

106

vehicle

E2a

third level lies in the 2a

E3a

fourth level lies in the 3a

E30

first level defined by 30

E23

second level defined by 2a and 3a

HA

vertical axis

M2, M3

Lateral surface of 2 or 3

U

Surroundings

II, III

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QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• CN 203604463 U [0002]

Claims (11)

Battery assembly (1) comprising at least a first battery cell (2), a second battery cell (3), a printed circuit board (7) and a housing (5), wherein the battery cells (2, 3) are elongate, in particular cylindrically shaped, wherein the battery cells (2, 3) and the printed circuit board (7) are accommodated in the housing (5), the battery cells (2, 3) being arranged such that a central longitudinal axis (2a) of the first battery cell (2) and a central longitudinal axis (3a ) of the second battery cell (3) run parallel to one another and the printed circuit board (7) is arranged between the first battery cell (2) and the second battery cell (3), characterized in that a first plane (E30), which is defined by a broad side (4 ) of the printed circuit board (7) is arranged at an angle to a second plane (E23), wherein the central longitudinal axes (2a, 3a) of the battery cells (2, 3) span the second plane (E23). Battery assembly after Claim 1 , characterized in that the first plane (E30) is arranged at right angles to the second plane (E23). Battery assembly according to at least one of the preceding claims, characterized in that the first plane (E30) forms a mounting surface (30) of the printed circuit board (7), on which at least a part of the electronic components (8) is arranged. Battery assembly according to at least one of the preceding claims, characterized in that the printed circuit board (7) connection lines (15a, 15b, 16) for connecting the battery cells (2, 3), wherein positive poles (27a, 28a) and negative poles (27b, 28b ) of the battery cells (2, 3) via the connecting lines (15a, 15b, 16) are connected to the circuit board (7), wherein the connecting lines (15a, 15b, 16) in particular by plug connections to the housing (5) are fixed. Battery assembly according to at least one of the preceding claims, characterized in that the printed circuit board (7) contact lines (17 - 21) for electrical connection to an electrical device (101), in particular a telematics device (102) to give energy or to absorb energy, wherein these contact lines (17-21) are guided transversely to longitudinal axes (2a, 3a) of the battery cells (2, 3) through the housing (5) to an outer side (31) of the housing (5). Battery assembly after Claim 5 , characterized in that the housing (5) comprises a projection (32) with guide ribs (33), wherein the contact lines (17 - 21) are connected to the projection (32) and form a contacting region (34). Battery assembly according to at least one of the preceding claims, characterized in that the housing (5) comprises at least a first housing shell (9) and a second housing shell (10), wherein at least one of the housing shells (9, 10) at least one, in particular by opposing ribs (35, 36, 37, 38) formed slot (39, 40), in which the circuit board (7) is inserted. Battery assembly after Claim 7 , characterized in that at least one of the ribs (35 - 38) also forms a system for a battery cell (2, 3), wherein the system is designed in particular as a contact surface, wherein the contact surface in particular to a curvature of a cylindrical lateral surface (M2, M3 ) of one of the battery cells (2, 3) is adapted. Battery assembly according to at least one of the preceding claims, characterized in that an electronic unit (6) comprises the printed circuit board (7) and disposed thereon electronic components (8), wherein the electronic unit (6) further comprises a temperature sensor (41), wherein the temperature sensor (41) is arranged in particular on the printed circuit board (7) and in particular arranged such that it has equal distances to the first battery cell (2) and to the second battery cell (3). Battery assembly according to at least one of the preceding claims, characterized in that a charging voltage when charging the battery cells (2, 3) and / or a discharge voltage when discharging the battery cells (2, 3) by means of the electronic unit (6) in particular also temperature-controlled. Telematics unit (103) for a vehicle (106) comprising a telematics device (102) and a battery assembly (1), wherein the telematics device (102) is connected to an electrical system (105) of the vehicle (106) for power supply, the battery assembly (1 ) is provided for the power supply of the telematics device (102) in the event of failure of the power supply provided by the electrical system (105) and wherein the telematics device (102) at least one transmitting and receiving unit (104), characterized in that the battery assembly after at least one the Claims 1 to 10 is trained.

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