Printed circuit board and method for manufacturing the printed circuit board

Description

[0001] The invention relates to a printed circuit board with a holder for a battery, a housing with such a printed circuit board arranged therein, and a method for producing a printed circuit board according to the invention.

[0002] In automation technology, field devices are used to determine and / or monitor process variables, particularly physical or chemical process variables. A field device typically comprises at least one sensor unit that comes into contact with the process at least partially and at least temporarily. For the purposes of this application, field devices essentially refer to all measuring devices used close to the process and that provide or process-relevant information. These include, for example, level measuring devices, flow measuring devices, pressure and temperature measuring devices, pH-redox potential measuring devices, conductivity measuring devices, etc., which measure the corresponding process variables of level, flow, pressure, temperature, pH value, or conductivity. Such field devices are manufactured and distributed in various designs by the E+H Group.

[0003] Many field devices in automation technology are increasingly no longer connected to a higher-level unit via a cable or wire, but communicate with it exclusively via wireless technology, such as Wi-Fi, Bluetooth, or Near Field Communication. The field device can also be part of a wireless communication network, such as Bluetooth, ZigBee, Wi-Fi, GSM, LTE, or UMTS, or even a wireless version of a fieldbus, particularly 802.15.4-based standards such as WirelessHART.Using such non-wired communication networks, measurement data and / or other information (e.g. information on parameterization, operation and / or diagnostics) can be transmitted to the higher-level unit and / or to a mobile device such as a smartphone, a tablet or a mobile device specifically designed for process automation, such as the FieldXpert distributed by Endress+Hauser, even without a wired or cabled connection of the field device.

[0004] This has the major advantage that, in principle, no cable or wire connection is required to the process-related field device. However, a cable or wire connection is usually also used to supply the field device with the electrical power it requires, for example, by connecting the field device to an external power supply unit via a two- or four-wire cable. Therefore, if the cable or wire connection is omitted, the field device must be powered by an internal power supply unit, such as a battery.

[0005] To power a field device in automation technology, a battery is typically required that provides a sufficiently constant voltage of at least 1.2 V. Such a battery is designed in the prior art as a round battery or a round-battery-shaped battery, whereby a round-battery-shaped battery can also be formed, for example, by connecting several button cells.

[0006] The challenge here is to integrate the battery into the automation field device as simply and space-efficiently as possible. It is advantageous to position a battery holder near a circuit board of the field device, on which the field device's electronic components are located. Integrating the battery holder into the circuit board is particularly advantageous.

[0007] Printed circuit boards that have a holder for a battery are known from the prior art. For example, a printed circuit board for accommodating a button cell is disclosed in US 2010 129 687 A. A printed circuit board with a holder for a round battery for a field device is known from Chinese utility model CN ​​2014 79468 U. Here, the printed circuit board has a hole into which a portion of the battery protrudes, enabling a space-saving arrangement of the battery in the holder. To secure the battery, it is wrapped with a fixing tape, which enables sufficiently strong fixation. Thanks to this fixation, the known holder is particularly resistant to vibrations that can occur in an automation process system. However, the solution proposed in CN 2014 79468 U does not allow for easy insertion and / or replacement of the battery.

[0008] Also known is a printed circuit board with a holder for a battery having two contact elements soldered to the printed circuit board, wherein the battery inserted into the holder is clamped between the contact elements in such a way that an imaginary straight line connecting the poles of the battery is substantially parallel to a plane of the printed circuit board. Both contact elements serve to establish the electrical connection and clamp the battery, and for this purpose are elastically deformable at least in sections. The elastically deformable section of the contact element is arranged substantially perpendicular to the plane of the printed circuit board, wherein the contact element is soldered to a contact surface of the printed circuit board by means of a section that is in turn arranged perpendicular to the elastically deformable section.

[0009] In order to design such a holder to be vibration-resistant, relatively high clamping forces are required. Even with such a solution, especially in the case of high clamping forces, inserting and / or replacing the battery is complex. In addition, the contact elements transmit the forces clamping the battery (hereinafter: clamping forces) to the circuit board essentially at a right angle. Therefore, the clamping forces act at an unfavorable angle on the soldered point of the soldered contact elements, namely not as a normal force acting perpendicular to the soldering point, but also in a direction parallel to it, i.e. as a transverse force. The transverse force can ultimately also weaken the soldering point of the contact element.

[0010] One possibility for contacting an energy storage device has been disclosed in EP 2 592 913 A1.

[0011] The invention is therefore based on the object of providing a circuit board with a holder for a battery, in particular a round battery, which is space-saving and simultaneously allows for easy insertion and / or replacement of the battery. The invention is further based on the object of providing a housing, in particular for a field device in automation technology, with a circuit board according to the invention arranged therein, as well as a method for producing the circuit board according to the invention with the holder.

[0012] With regard to the printed circuit board, the object is achieved by the features of claim 1. Claim 1 comprises a holder for a battery, wherein the holder has a first and a second contact, each connected to a conductor track of the printed circuit board, and wherein the holder is designed such that a battery insertable into the holder, when inserted, is clamped between the two contacts in such a way that poles of the battery arranged on opposite end faces of the battery are each in electrically conductive connection to one of the two contacts, and that the battery clamped between the contacts rests on a carrier region of the printed circuit board carrying the battery and is aligned with respect to the printed circuit board in such a way that an imaginary straight line connecting the poles is arranged substantially parallel to the plane of the carrier region of the printed circuit board,wherein the circuit board has a rigid first portion connected to the support portion and arranged substantially perpendicular to the support portion, and wherein the first contact is arranged on the first portion.

[0013] According to the invention, the printed circuit board thus has a carrier region and a first section connected thereto and arranged perpendicularly thereto, wherein the first contact is arranged on the first section arranged perpendicularly to the carrier region.

[0014] The invention of the advantages are the following: Since the holder is shaped or formed from the support region and the first section of the circuit board arranged perpendicular to it, the solution according to the invention provides a circuit board into which the holder is integrated in a space-saving manner. A further advantage of this solution is that such a first contact is very easy to manufacture. Due to the rigid first section of the circuit board, there is a favorable distribution of the clamping forces in the first contact when a battery is inserted into the holder. Firstly, the clamping forces are distributed over the entire surface of the first section. Secondly, the clamping forces are transmitted in the first contact essentially perpendicular to the first section (i.e. pointing in the direction of the surface normal of the first section), so that the clamping forces act as a normal force on the first contact.The favorable distribution of clamping forces in the first contact makes battery insertion and / or replacement easier. It also provides greater resistance to vibrations.

[0015] According to the invention, the circuit board has a rigid second section which is connected to the carrier region. The second section is arranged substantially perpendicular to the carrier region, with the second contact being arranged on the second section. In this development, there are therefore two sections, each arranged perpendicular to the carrier region, namely the first and the second section. One of the two contacts is arranged on one of the two sections arranged perpendicular to the carrier region. The first and the second section are each connected to one end of the carrier region, with the two ends lying opposite one another. In this development, the favorable distribution and direction of the clamping forces is present for both the first contact and the second contact.

[0016] In one development of the invention, the first contact comprises a contact surface arranged on the first section. The contact surface serves for the electrical connection to one of the poles of a battery that can be inserted into the holder when inserted, such that the pole is in direct electrical connection with the contact surface when inserted. The advantage of this development is that no further contact element is required to establish the electrical connection to one of the poles of the battery, but rather the electrical connection of the first contact to the battery exists directly between the pole and the contact surface, for example by a pole of the battery resting directly on the contact surface. The battery can be clamped in the inserted state by at least one of the contacts of the holder comprising at least one contact element that is spring-elastic at least in sections.In one embodiment, the first contact therefore comprises a first contact element that serves for clamping and electrical connection and is resilient or has a resilient section. Alternatively or additionally, the second contact comprises a second contact element that serves for clamping and electrical connection and is resilient or has a resilient section.

[0017] In a further development of the invention, the first contact element and / or the second contact element are / is designed as an SMD-solderable component. The SMD-solderable component is soldered onto a designated contact surface of the circuit board, with the designated contact surface being connected to the conductor track connected to the respective contact. SMD stands for surface-mounted components (SMD). SMD-solderable components are mechanically placed on contact surfaces coated with solder paste on the circuit board using automatic placement machines and soldered together in a single reflow process. In the further development with SMD-solderable contact elements, the soldering of the contact elements or the contact element can be integrated into the reflow process for soldering all other SMD-solderable electronic components intended for soldering onto the circuit board.This further training therefore represents a particularly preferred and ultimately cost-effective solution in terms of manufacturing technology.

[0018] In the case where the contact is arranged on a section perpendicular to the support area (namely, the first or second section) and comprises a contact element SMD-soldered to the soldering contact surface, this solution results in a high-strength, SMD-soldered solder joint due to the aforementioned perpendicular force transfer to the soldering point. This increases the reliability of the solder joint of the contact of the battery holder, and thus also the reliability of the field device's power supply.

[0019] In one embodiment of the invention, the second contact element is a contact bracket arranged in the carrier region. The contact bracket comprises a contact bracket foot soldered to the provided contact surface and a spring-elastic contact bracket section serving for clamping and electrical connection. The clamping forces in the second contact are therefore transmitted to the circuit board at a substantially right angle. In this embodiment, the second contact comprises a contact bracket known from the prior art, manufactured in a standardized manner, arranged on the carrier region and preferably SMD-solderable, whereas the first contact according to the invention is arranged on the second section arranged perpendicular to the carrier region and is formed, for example, only by a contact surface against which a pole of a battery inserted into the holder rests when inserted.In this embodiment, the contact bracket known from the prior art is therefore combined with the solution according to the invention in a particularly simple manner.

[0020] In a further embodiment of the invention, the first contact element is a spring contact arranged in the first section. Alternatively or additionally, the second contact element is a spring contact arranged in the second section. The spring contact is arranged in a section of the circuit board that is arranged perpendicular to the carrier region, namely in the first section and / or the second section. In this embodiment, the clamping forces by the spring contact therefore act essentially perpendicularly on the first and second sections, i.e. as a normal force. One or both of the spring contacts can, for example, be an essentially cylindrical contact spring, or else a U-shaped spring contact.

[0021] According to the invention, the carrier region has a recess into which the battery can be inserted. The recess is in particular dimensioned such that a partial region of the battery, which is inserted into the recess from a first side of the carrier region and rests on the recess, protrudes from the carrier region on a second side of the carrier region opposite the first side. In this advantageous development, the battery which can be inserted into the holder therefore rests on the recess in the inserted state in such a way that a partial region of the battery protrudes through the recess. A partial region of the battery is therefore arranged on each side of the carrier region. Advantageously, this development represents a particularly space-saving arrangement of the battery. In the event that the circuit board is part of a field device in automation technology, the size of the housing of the field device orof the field device as a whole can be significantly reduced.

[0022] In a further particularly advantageous further development, at least one component is arranged on the second side of the carrier region. The recess, in particular the dimension of the base area of ​​the recess, is such that the partial region of a battery inserted into the holder protruding from the circuit board has a height protruding from the carrier region that is smaller than the height of the component soldered onto the second side that has the greatest overall height. In this particularly advantageous development, the recess, in particular the dimension of the base area of ​​the recess, is adapted to the overall height of the largest component. The overall height is referred to as the dimension of the components in the direction perpendicular to the carrier region.As a result, a battery inserted into the holder only protrudes far enough through the recess in the support area when inserted, so that the space available on the second side of the support area, which is already available (due to the height of the largest component), is optimally utilized. This enables a particularly space-saving arrangement of the battery in the holder.

[0023] According to the invention, the support region and the first section arranged perpendicularly thereto are formed by two adjacent regions of a rigid printed circuit board, between which a groove-shaped recess forming a bending line is provided in the circuit board. The single bending of a circuit board along a groove-shaped recess can be achieved, for example, with a circuit board known from the prior art, which has a groove-shaped recess between two flat, rigid circuit board regions. Such a circuit board is also referred to as a semi-flexible or semi-flexible circuit board. For example, the circuit board manufacturer Würth markets such a circuit board under the trade name "WIRELAID," which has reinforcing copper structures, for example, for the conductor tracks crossing the bending line.This makes it possible to easily bend a circuit board once, as required by the invention, without damaging the conductor tracks crossing the bend line.

[0024] According to the invention, the carrier region and the second section arranged perpendicular thereto are formed by two adjacent regions of a rigid printed circuit board, between which a groove-shaped depression forming a bend line is provided in the printed circuit board.

[0025] In one embodiment, the circuit board has a locking device, in particular a locking device arranged on the circuit board, for each section provided that is arranged perpendicular to the support region, namely for the first section or for the first section and the second section. The locking device fixes the respective section in its orientation perpendicular to the support region of the circuit board. In principle, there are no restrictions on the locking device; it can, for example, be designed as a locking support applied to the circuit board (optionally by means of a joining agent). Alternatively, the locking device can also be formed by a cured potting compound, which is applied to a predetermined area of ​​the circuit board, for example, using an injection molding process, or else by an adhesive.

[0026] With regard to the housing, the object is achieved by the features of claim 13. Claim 13 contains a housing, in particular a housing of a field device in automation technology, with a printed circuit board according to the invention arranged therein. The housing has a housing region for each provided section arranged perpendicular to the support region, namely for the first section or for the first section and the second section. The printed circuit board is arranged in the housing in such a way that the housing region mechanically supports the respective section of the printed circuit board by means of a border and fixes its orientation perpendicular to the support region of the printed circuit board, wherein the respective section projects into the border of the respective housing region. In this embodiment, the fixing or locking of the section arranged perpendicular to the support region takes place by means of the housing region.As a result, the housing according to the invention with the printed circuit board arranged therein advantageously requires no further means for locking the vertically arranged section.

[0027] With regard to the method, the object is achieved by claim 14. Claim 14 contains a method for producing a printed circuit board according to the invention with a holder for a battery. The support region and the provided section(s) arranged perpendicular to the support region, namely the first section or the first section and the second section, are produced from a rigid, flat starting printed circuit board comprising the support region and the respective section(s), by a groove-shaped depression being introduced, in particular milled, into the starting printed circuit board for each section along a fold line. The fold line runs between the support region and the respective section.Subsequently, for each section, the respective section is brought out of the common plane with the support area into an arrangement perpendicular to the support area by bending the initial circuit board along the respective bend line. Reference is again made to the aforementioned semi-flexible circuit board as a possible design for the initial circuit board. The initial circuit board can, if necessary, be processed in further process steps to obtain a specific design of the circuit board according to the invention. For example, the recess of the circuit board according to the invention can also be introduced into the circuit board, in particular milled. The method is particularly simple in terms of production technology and can be integrated into these further process steps for processing the initial circuit board.

[0028] In a further embodiment of the process, the groove-shaped depression of the respective bend line is introduced with a round, rectangular or V-shaped profile.

[0029] In particular, there is a first side of the output circuit board on which the support region and the first section are brought closer together during the bending process. On a second side of the output circuit board opposite this first side of the output circuit board, the support region and the first section are moved away from each other during the bending process. In principle, there is no restriction within the scope of the invention as to which side of the output circuit board the groove-shaped depression of the bending line is arranged in relation to the first or second side. The groove-shaped depression of the bending line can be arranged either on the first side of the output circuit board or on the second side of the output circuit board, which is opposite the first side of the output circuit board.

[0030] The invention and advantageous embodiments thereof are explained in more detail below using exemplary embodiments illustrated in the figures. Identical parts are provided with the same reference numerals throughout the figures; where clarity requires it or it otherwise seems appropriate, previously mentioned reference numerals have been omitted in subsequent figures.

[0031] It shows: Fig. 1a : a sectional view of an embodiment of the circuit board according to the invention with a battery inserted into the holder; Fig. 1 b: a top view of the embodiment from Fig. 1a the circuit board according to the invention with a battery inserted into the holder; Fig. 2a : a sectional view of a further embodiment of the circuit board according to the invention with a battery inserted into the holder; Fig. 2b : a top view of the further embodiment from Fig. 2a the circuit board according to the invention with a battery inserted into the holder; Fig. 2c : a sectional view of a further embodiment of the circuit board according to the invention with a battery inserted into the holder; Fig. 3a : a plan view of an embodiment of the starting circuit board used in the method for producing the circuit board according to the invention; Fig. 3b : a plan view of a further embodiment of the starting circuit board used in the method for producing the circuit board according to the invention; Fig. 4a : a sectional view of an embodiment of the embodiment of the Fig. 3b shown output circuit board; Fig. 4b : a sectional view of a further embodiment of the embodiment of the Fig. 3b shown output circuit board; Fig. 5 : another embodiment of the method for producing the printed circuit board according to the invention; Fig. 6a : a perspective view of an embodiment of the housing and the circuit board according to the invention arranged therein; Fig. 6b : a perspective view of a further embodiment of the housing and the circuit board according to the invention arranged therein.

[0032] In the Figuren 1a, 1b an embodiment of the printed circuit board 1 according to the invention is shown with a battery 9 inserted into the holder 2, wherein Fig. 1a a sectional view and Fig. 1b shows a view.

[0033] The holder 2 for the battery 9 is formed, among other things, by a carrier region 4, a first section 41 arranged perpendicularly thereto, and the contacts 21, 22, wherein the battery 9 rests on the carrier region 4 in the inserted state. The first section 41 is fixed in its essentially perpendicular orientation with respect to the carrier region 4 by a mechanical locking device 13, which is applied to the printed circuit board 1. Alternatively, the locking device 13 can also be formed by a cured potting compound, which is applied, for example, to a predetermined area of ​​the printed circuit board 1 using an injection molding process, or by an adhesive.

[0034] The first contact 21 has a contact surface 51, against which a first pole of the battery 9 inserted in the holder 2 directly rests when inserted. The contact surface 51 is connected to a conductor track 31. This establishes an electrical connection between the first pole of the battery 9 and the circuit board 1, whereby only a section of the relevant area of ​​the circuit board 1 is shown here.

[0035] The second contact 22 has a contact surface 72 arranged on the carrier region 4 and a contact element 62 soldered to the contact surface 72. In this exemplary embodiment, the contact element is a contact bracket 62b, known per se from the prior art, which is SMD-solderable and elastically deformable in sections and comprises a contact bracket base soldered to the contact surface 72 and a spring-elastic section. The contact surface 72 is also connected to a conductor track 32.

[0036] The spring-elastic section of the contact bracket 62b serves to establish the electrical connection with a pole of the battery 9 and to clamp the battery 9 between the two contacts 21, 22 of the holder 2. As a result, the electronic components BE, which are arranged or soldered on a first and / or second surface of the circuit board 1, can be supplied with energy by the battery 9 inserted in the holder 2, wherein the insertion and / or replacement of the battery 9 in the holder 2 according to the invention is easily possible.

[0037] At the same time, the first section 41 of the circuit board in the first contact 21 ensures ideal distribution or transmission of the clamping forces. In this embodiment of the invention, the spring-elastic clamping is provided by the spring-elastic section of the contact bracket 62b. The contact bracket 62b is designed as an SMD-solderable contact bracket 62b, so that the arrangement of the contact bracket 62b of the second contact 22 of the holder 2 can be easily integrated into the common reflow soldering process of all SMD-solderable components BE.

[0038] Furthermore, in this exemplary embodiment, a recess 8 is introduced into the printed circuit board 1, wherein the recess 8 is arranged in the carrier region 4 of the printed circuit board 1. The recess 8 can, for example, be milled in this exemplary embodiment (as well as in other embodiments of the invention), or can be introduced into the printed circuit board 1 by means of other processing methods known from the prior art. The dimensions of the recess 8 are adapted to the battery 9 intended for insertion into the holder 2 in such a way that a partial region 91 of the battery 9 protrudes through the recess 8; this is shown in the sectional view of Fig. 1a as well as from the supervision of Fig. 1b This allows for a space-saving arrangement of the battery 9, which is particularly advantageous when the circuit board 1 is part of a field device in automation technology.

[0039] In the Figuren 2a und 2b is one of the Fig. 1a,b shown embodiment alternative embodiment of the circuit board 1 according to the invention with a battery 9 inserted into the holder 2 is shown. Fig. 2a shows a sectional view, while Fig. 2b shows a view.

[0040] The first contact 21 of the Fig. 2a, b The embodiment shown is similar to the one in Fig. 1a, b shown embodiment, since it also has a first section 41 arranged perpendicular to the carrier region 4, wherein here the second contact 22 is now also formed, inter alia, by a further section arranged perpendicular to the carrier region 4, namely the second section 42.

[0041] The second section 42 is held in its vertical alignment to the support area 4 by a locking device 14, which is arranged in the same way as in connection with Fig. 1a, b The aforementioned locking device 13 of the first contact 21 can be applied or formed. For clamping purposes, the second contact 22 has a further spring contact 62a, wherein the further spring contact 62a is a substantially cylindrical contact spring that is SMD-soldered onto a contact surface 72 arranged in the second section 42. Advantageously, in this embodiment, the clamping forces in each of the two contacts 21, 22 act only as a normal force on the contact surfaces 51, 72.

[0042] Also in the Fig. 2a, b The embodiment shown is the one described in Fig. 1a , b shown recess 8 is introduced into the carrier area 4 of the circuit board 1. In the embodiment in Fig. 2a, b Additionally, a component BE with a height hBE in the direction perpendicular to the carrier region 4 is shown. The component BE is soldered onto the second side 402 of the carrier region 4, with the battery 9 being insertable into the holder 2 from the first side 401 of the carrier region 4.

[0043] The battery protrudes with a protruding height hBat through the recess 8 of the carrier region 4. The dimension of the recess 8 of the holder 2 is adapted to the components intended for soldering onto the side 402 of the carrier region 4 as well as to the battery 9 in such a way that the protruding height hBat is less than or equal to the height hBE of the component BE soldered onto the second side 402 or intended for soldering, which has the greatest height, ie the greatest height compared to all other components soldered onto the second side 402 or intended for soldering. The component BE or the adaptation of the recess 8 to the height hBE and the battery 9 can of course also be taken from the previous embodiment from the Fig. 1a , b should be added.

[0044] Optionally, in the embodiment of the invention with the two sections 41, 42 arranged perpendicular to the support area 4, the holder 2 can also have a spring contact 61a, 62a in the first contact 21 and in the second contact 22. This further embodiment is shown in a sectional view in Fig. 2c shown. In this exemplary embodiment, both spring contacts 61a, 62a are spring contacts 61a, 62a which are SMD-soldered onto the contact surfaces 71, 72 and are essentially U-shaped here. These can, for example, be soldered in a single reflow process together with all SMD-solderable components onto a contact surface 31 of the first contact 21 or onto a contact surface 32 of the second contact 22 of the printed circuit board 1. Of course, alternatively, if the first contact 21 is similar to the one shown in Fig. 2a,2b shown embodiment, only the second contact 22 has a substantially U-shaped spring contact 62a. In the first contact 21 then lies (see Fig. 2a ) a pole of the battery 9 directly touches a contact surface 51.

[0045] In the Figuren 3-5 Embodiments of a method are shown with which the printed circuit board 1 according to the invention can be produced; in particular, embodiments of a method for obtaining the first section 41 arranged perpendicular to the carrier region 4 and connected to the carrier region 4, or alternatively the first section 41 and the second section 42.

[0046] In particular, Fig. 3a a plan view of a schematic representation of an initial circuit board 16 is shown. In the rigid and flat initial circuit board 16, the support region 4, the first section 41 and the second section 42 are initially arranged in a common plane. Two groove-shaped depressions 121, 122 are milled into the initial circuit board 16, each forming a fold line 101, 102. The groove-shaped depressions 121, 122 can, if necessary, be milled into the initial circuit board 16 at the same time as the recess 8. By folding the initial circuit board 16 along the fold line 101, 102, the regions arranged perpendicular to one another, ie the support region 4 and the first section 41 and, if necessary, the support region 4 and the second section 42, of the circuit board 1 according to the invention are obtained. The arrows indicate the direction in which the bend occurs.

[0047] In Fig. 3b is a supervision of a Fig. 3a similar configuration, showing a more detailed representation of the output circuit board 16. In particular, the output circuit board 16 is machined such that it can be inserted into the housing 15 (see also Fig. 6a und 6b ) can be ordered. The supervision from Fig. 3b shows the underside or the second side 402 of the carrier area 4, on which contact surfaces for components to be soldered thereon are indicated. At the same time, a top view of the groove-shaped depressions 121, 122 is shown, which are also shown in detail in the sectional view in Fig. 4a und Fig. 4b are shown.

[0048] In a first, in Fig. 4a In the embodiment shown, there is a bending line 101 with a groove-shaped depression 121, which is introduced with a substantially V-shaped profile. The invention does not impose any restrictions on the side of the output circuit board 16 on which the groove-shaped depression 121, 122 of the bending line 101, 102 is arranged. Therefore, the bending of the circuit board, as shown in Fig. 4a indicated by the arrows, in both directions, ie both in a direction opening the groove-shaped recess 121 or in a direction closing the groove-shaped recess 121. In the version in Fig. 4a The groove-shaped recess 121 has a substantially V-shaped profile, here with an opening angle of approximately 120°. However, an alternative design in Fig. 4b The profile of the groove-shaped recess 122 is substantially U-shaped. It is arranged on the opposite side of the output circuit board; of course, the profile of the groove-shaped recess 122 can also be rectangular.

[0049] Since the conductor tracks 31, 32 (not shown here) cross the bend lines 101, 102, it must be ensured that the conductor tracks are not damaged during the single bending of the output circuit board 16. This can be achieved by a layered construction of the output circuit board 16, into which a reinforcement with copper structures with a thickness of several hundred micrometers is incorporated (not shown here). This is the case, for example, with a semi-flexible output circuit board 16 sold under the trade name "WIRELAID" and possibly additionally specially processed for the invention.

[0050] Alternatively, it is possible, as in Fig. 5 shown, to use an output circuit board with various rigid and planar sections that are connected to one another via a flexible circuit board region 14. Such a rigid-flexible circuit board output circuit board 16 allows for a substantially arbitrary arrangement of the rigid and planar sections. For example, the carrier region 4 can be formed by a first rigid section of the rigid-flexible circuit board and the first section 41 to be arranged perpendicularly thereto can be formed by a second rigid section connected to it via the flexible circuit board region 14. Of course, combinations of the Figuren 3a,b, 4 und 5 illustrated embodiments, for example, by the first section 41 or its perpendicular arrangement to the carrier area 4 as in Fig. 3a,b und Fig. 4 shown, and the second section 42 or its perpendicular arrangement to the support area 4 as shown in Fig. 5 . is obtained as shown.

[0051] In the Figuren 6a und 6b Perspective views of exemplary embodiments of a housing 15 are shown, each with a printed circuit board 1 according to the invention arranged therein, and each with a battery 9 inserted into the holder 2 of the printed circuit board 1. The housing 15 is a housing 15 of a field device in automation technology.

[0052] In Fig. 6a A printed circuit board 1 is arranged in the housing 15, which is similar to the one in Fig. 2a, b shown circuit board 1. In contrast to the circuit board shown in Fig. 2a, 2b In the embodiment shown, in this variant of the invention, no locking device 13, 14 is applied to the circuit board 1. Instead, the first section 41 and the second section 42 of the circuit board 1 are supported in their orientation substantially perpendicular to the support region 4 by means of the housing 15. For each of the sections 41, 42 arranged substantially perpendicular to the support region 4, a housing region 151a, 152a is provided which supports the section 41, 42. The supporting housing region 151a, 152a also has a surround 151b, 152b into which the section 41, 42 projects. The surround 151b, 152b has, for example, as shown here, an elevation holding the section 41, 42, wherein the elevation is a solid sphere in sections. Other designs of the surround 151b, 152b are of course possible.

[0053] In Fig. 6b a further embodiment of a housing 15 is shown with a printed circuit board 1 according to the invention arranged therein with a battery 9 inserted into the holder 2, the printed circuit board 1 being similar to the one in Fig. 1a, b shown circuit board 1. In this embodiment, the circuit board 1 has only one section 41 arranged substantially perpendicular to the carrier area 4, which is supported in its alignment by the housing area 151a. In contrast to the Fig. 1a, b As shown in the circuit board 1, no locking device 13 applied to the circuit board is required for the first section 41.

[0054] Of course, alternatively, a further embodiment of the printed circuit board 1 according to the invention can be arranged in the housing 15, such as, for example, the one shown in Fig. 2c shown embodiment of the printed circuit board 1 according to the invention, similar to that in Fig. 6a arrangement shown. Reference signs and symbols

[0055] 1 Printed circuit board 14 Flexible printed circuit board area 2 Holder 21 First contact 22 Second contact 31, 32 Conductor track 4 Carrier area 401 First side of the carrier area 402 Second side of the carrier area 41 First section 42 Second section 51 Contact surface 61 First contact element 61a Spring contact 62 Second contact element 62a Spring contact 62b Contact clip 71, 72 Contact surface 8 Recess 9 Battery 101, 102 Bend line 121, 122 Grooved recess 13, 14 Locking device 15 Housing 151a, 152a Housing area 151b, 152b Bezel 16 Output printed circuit board BEComponent hBEHeight of the largest component hBathProtruding height of the battery

Claims

1. Printed circuit board (1) with a holder (2) for a battery (9) integrated into the printed circuit board, wherein the holder (2) has a first and a second contact (21, 22), each connected to a conductor track (31, 32) of the printed circuit board, and wherein the holder (2) is designed in such a way that a battery which can be inserted into the holder (2) is clamped between the two contacts (21, 22) in the inserted state, - in that poles of the battery (9) arranged on opposite end faces of the battery (9) are each in electrically conductive connection to one of the two contacts (21, 22), and - that the battery clamped between the contacts (21, 22) is aligned in relation to the printed circuit board in such a way that an imaginary straight line connecting the poles is arranged substantially parallel to the plane of a carrier region (4) of the printed circuit board, wherein the printed circuit board (1) comprises a rigid first portion (41) connected to the support region (4) and arranged substantially perpendicular to the support region (4), wherein the first contact (21) is arranged (41) on the first portion, wherein the printed circuit board (1) comprises a rigid second portion (42) connected to the support region (4) and arranged substantially perpendicular to the support region (4), wherein the second contact (22) is arranged (42) on the second portion, wherein the support region (4) and the first section (41) arranged perpendicularly thereto are formed by two directly adjacent rigid regions of the printed circuit board (1), between which a channel-shaped depression (121) forming a bend line (101) is provided in the printed circuit board (1), wherein the second section (42) is formed by a rigid region of the printed circuit board (1) directly adjoining the carrier region (4), and wherein a channel-shaped depression (122) forming a bend line (102) is provided in the printed circuit board (1) between the carrier region (4) and the second section (42), characterized in that that the battery clamped between the contacts (21, 22) rests on the carrier region (4) supporting the battery (9) and in that the carrier region (4) has a recess (8), into which recess (8) the battery (9) can be inserted, and wherein the recess (8) is dimensioned in particular such that a partial region (91) of the battery (9) inserted into the recess (8) from a first side (401) of the carrier region (4) and resting on the recess (8) projects out of the carrier region (4) on a second side (402) of the carrier region (4) opposite the first side.

2. Printed circuit board (1) according to claim 1 wherein the first contact (21) comprises a contact surface (51) arranged on the first portion (41), and wherein the contact surface (51) serves for the electrical connection with one of the poles of a battery (9) insertable into the holder (2) in the inserted state in such a way that in the inserted state the pole is in direct electrical connection with the contact surface (51).

3. Printed circuit board (1) according to at least one of claims 1 to 2, wherein the second contact (22) comprises a spring-elastic contact element (62, 62a, 62b) serving for clamping and electrical connection or having a spring-elastic section.

4. Printed circuit board (1) according to claim 3, wherein the contact element (62, 62a, 62b) is designed as an SMD-solderable component which is soldered onto a contact surface (71; 72) provided on the printed circuit board (1), wherein the provided contact surface (71;72) is connected to the conductor track (31;32) connected to the second contact (21,22).

5. Printed circuit board (1) according to at least one of claims 3 to 4, wherein the contact element (62, 62a, 62b) is a spring contact (62a) arranged in the second section (42).

6. Printed circuit board (1) according to at least one of claims 1 to 5, wherein the printed circuit board (1) has a locking device (13; 14), in particular a locking device (13; 14) arranged on the printed circuit board, for each intended section (41; 42) arranged perpendicular to the carrier region (4), namely for the first section (41) and the second section (42), and wherein the locking device (13; 14) fixes the respective section (41; 42) in its orientation perpendicular to the carrier region (4).

7. Arrangement comprising a printed circuit board (1) according to at least one of claims 1 to 6, a battery inserted into the holder of the printed circuit board and at least one component (BE) which is soldered onto the second side of the carrier region (402) (BE) wherein the recess (8), in particular the dimension of the base area of the recess (8), is such that the partial region (91) of the battery (9) projecting from the printed circuit board (1) has a height (hBat) projecting from the carrier region (4), wherein the projecting height (hBat) is smaller than the height (hBE) of the component (BE) having the greatest overall height and soldered onto the second side8. Arrangement comprising a housing (15), in particular housing (15) of a field device of automation technology, and a printed circuit board (1) arranged therein according to at least one of the previous claims 1 to 6 or with an arrangement arranged therein according to claim 7, the housing (15) having a housing region (151, 152) for each intended section (41; 42) arranged perpendicularly to the carrier region (4), namely for the first section (41) or for the first section (41) and the second section (42), and the printed circuit board (1) being arranged in the housing (15) in this way, in that the housing region (151a; 152a) in each case mechanically supports the respective section (41; 42) of the printed circuit board (1) by means of a surround (151b; 152b) and fixes it in its alignment perpendicular to the carrier region (4) of the printed circuit board (1), the respective section (41; 42) projecting into the surround (151b; 152b) of the respective housing region (151a; 152a).

9. Method for manufacturing a printed circuit board (1) with a holder for a battery (9) integrated in the printed circuit board according to at least one of claims 1 to 6, wherein the support region (4) and the provided sections (41;42) perpendicular to the support region (4), namely the first section (41) and the second section (42), are formed from a rigid planar output printed circuit board (16) comprising the support region and the respective section(s) (41;42) by - for each section (41; 42), a channel-shaped depression (121, 122) is made, in particular milled, in the output printed circuit board (16) along a bend line (101, 102), the bend line (101, 102) running between the carrier region (4) and the respective section (41; 42); and - for each section (41; 42), the respective section (41; 42) is brought out of the common plane with the carrier region (4) into an arrangement perpendicular to the carrier region (4) by bending the output printed circuit board (16) along the respective bending line (101, 102).

10. Method according to claim 9, wherein the channel-shaped recess (121, 122) of the respective buckling line (101, 102) is formed with a round, rectangular or V-shaped profile.