Temperature control panel and method for producing temperature control panel

Abstract

The invention relates to a temperature control plate for battery cooling and to a method for producing a temperature control plate. The invention relates to a temperature control plate comprising a plate body having a first plate element (1) and a second plate element and at least one connecting piece (2) for a temperature control fluid. All the components are connected with one another through a brazing technology. The connecting piece (2) has an outer flange (4) and a plug section (5), the outer flange (4) externally bears against the first plate element (1), and the plug section (5) is positioned in a mounting opening (7) of the first plate element (1). The mounting opening (7) is provided in a profile (8) in the first plate element (1), the circumferential edge (10) of the mounting opening (7) being displaced relative to the plate plane (PE) of the first plate element (1). An end section (14) of the plug section (5) is plastically shaped as an inner flange (30), an annular groove (31) is formed between the outer flange (4) and the inner flange (30), and an edge (10) of the mounting opening (7) lies in the annular groove (31).

Description

Technical Field

[0001] The invention relates to a temperature control plate for controlling the temperature of an electronic component and / or a battery and a method for producing a temperature control plate.

[0002] In particular, the invention relates to a cooling plate for cooling a battery, in particular for cooling a battery of a motor vehicle. Background Art

[0003] High-voltage battery systems are used in electric vehicles or hybrid vehicles. In order to ensure the effective range, driving power, charging power and service life of the electric vehicle, thermal management of the battery is necessary. In order to keep the battery in an optimal temperature range, a temperature control device is used, which should ensure that the excess waste heat generated during battery operation is dissipated from the battery and the battery is kept at a uniform temperature level.

[0004] In order to control the temperature of the battery or battery module, a temperature control plate is used, which is in direct or indirect contact with the battery. A temperature control fluid flows through the temperature control plate. Such a temperature control plate usually consists of two plate elements, which define one or more channels between them in a manner that is assembled to form a plate body. The temperature control fluid is guided through one or more channels. The temperature control plate is usually made of light metal sheet, in particular aluminum sheet.

[0005] In order to introduce and remove the temperature control fluid to the temperature control plate, the plate is provided with a connecting pipe. The connecting pipe is usually produced by forming or cutting. The connecting pipe is fixed to the temperature control plate in a material-locking manner by welding, brazing or gluing. Threaded connections are also known.

[0006] The fastening of the connection pieces after the production of the plate body of the temperature control plate requires an additional joining step and is correspondingly complex.

[0007] Temperature control plates in the form of cooling plates are known in the prior art.

[0008] DE 10 2014 217 728 A1 describes a cooling plate joined by soldering technology, which is composed of a structural plate and a cover plate.

[0009] DE 10 2018 123 972 A1, which belongs to the prior art, discloses a cooling plate and a method for producing a cooling plate. The cooling plate has a connecting pipe for a cooling fluid, which has a mounting flange and a plug section. The mounting flange rests on the plate body of the cooling plate. The plug section is positioned in the mounting opening of the plate body and is plastically deformed and engages with the plate body.

[0010] Problems with the integrally bonded connection of a temperature control plate or cooling plate to a connecting piece are possible leaks (particularly due to thermal deformations) and the subsequent processing effort associated therewith. Summary of the invention

[0011] Starting from this prior art, the object of the present invention is to provide a temperature control plate which is improved in terms of function and production technology and has a connection piece which is joined in an economical and process-reliable manner, and an advantageous method for producing such a temperature control plate.

[0012] The object is achieved in part by a temperature control plate according to the features of claim 1 .

[0013] This object is achieved in part by a method according to claim 7 .

[0014] Advantageous embodiments and improvements of the invention are the subject matter of the dependent claims.

[0015] The temperature control plate has a plate body consisting of two plate elements. The temperature control fluid is introduced and discharged via a connecting pipe. The connecting pipe is connected to the plate body or its plate elements in a material-locked manner. These plate elements are particularly channel plates and base plates, which are assembled into a plate stack and connected to each other to form a plate body. The plate elements are composed of light metal or light metal alloys, particularly aluminum alloys. At least one plate element of the plate body of the temperature control plate has a channel structure for conducting the temperature control fluid. The plate elements are connected by means of a pressure welding material lock. The brazing process is performed in a forming brazing mold. For this purpose, the plate stack consisting of two plate elements is clamped in a forming brazing mold, pressed against each other and heated to a temperature above the melting temperature of the brazing material applied between the plate elements, so that the brazing material is transformed into a liquid phase by melting and after the brazing material solidifies, a material-locked connection is formed on the joint surfaces of the plate elements that are abutted against each other.

[0016] In order to construct one or more channels in at least one plate element, the plate element is clamped in a forming brazing die and the gap between the plate elements is loaded with internal pressure. For this purpose, an active medium is introduced into the gap and a channel structure with at least one channel or multiple channels is generated using internal high pressure technology.

[0017] The connecting pipe of the temperature control plate according to the present invention has an outer flange and a plug section. The outer flange is attached to the plate element of the plate body of the temperature control plate on the outside. The plug section is positioned in the assembly opening of the plate element and plastically deformed. According to the present invention, the assembly opening is arranged in a molded portion in the first plate element. Through the molded portion, the surrounding edge of the assembly opening is displaced relative to the plate plane of the first plate element. The connecting pipe is inserted through the assembly opening in the plate element with its plug section. The end section of the plug section is formed into an inner flange by the plastic molding portion. The inner flange extends radially outward. An annular groove is constructed between the outer flange and the inner flange. The edge of the assembly opening extends in the annular groove. The surrounding edge of the assembly opening is connected between the outer flange and the inner flange in a form-locking and fluid-tight manner. The inner flange is formed by the curling of the end section and a crimping connection is generated between the connecting pipe and the first plate element.

[0018] The diameters of the assembly opening and the plug section are structurally coordinated with each other. The assembly opening can be designed in particular as a circular, oval or slotted hole. The assembly opening is produced in the first plate element by punching technology. The assembly opening can be processed into the first plate element before, during or after the production of the shaped portion.

[0019] The connecting piece is fixedly connected to the plate element by a crimp connection.The plate element can be supplied for further use and forms the first plate element of a plate stack for producing a plate body of a temperature control plate.

[0020] The plate elements are joined to one another and to at least one plate element and the connection piece in a materially bonded manner, in particular by means of a soldering technique, preferably a pressure welding technique.

[0021] The profile is designed as a local recess in the plate element. The profile is configured in a cup-shaped or bowl-shaped manner. The recess can have a circular, oval or slot-shaped circumference. The depth of the profile is small compared to the smallest diameter of the profile. The profile has a circumference and a depth, which are dimensioned so that the inner flange is accommodated in the profile.

[0022] It is practically advantageous if the wall thickness of the inner flange is dimensioned between greater than or equal to 0.5 mm and less than or equal to 1.0 mm.

[0023] Particularly advantageously, the shaped portion has a depth which is greater than or equal to the wall thickness of the inner flange. In particular, the shaped portion is geometrically designed such that the inner flange is received in the receiving portion and is substantially flush with the adjacent inner face of the first plate element. Advantageously, the inner flange does not protrude relative to the inner face of the first plate component. Substantially flush means that, taking into account component-related tolerances, the inner side of the inner flange and the inner face of the first plate element end at the same height.

[0024] Another advantageous embodiment provides that a brazing material, in particular a ring made of brazing material, i.e. a brazing ring and / or a seal is inserted between the outer flange and the first plate element. The brazing material or the brazing ring can also form a seal. The brazing material melts when the plate element and the connecting piece are joined by pressure welding. After the brazing has solidified, a material connection is established between the outer flange and the peripheral edge of the assembly opening sandwiched between the outer flange and the inner flange.

[0025] Furthermore, it is advantageous if the soldering material, in particular the soldering ring and / or the seal, is arranged in a receptacle in the outer flange, thereby forming a positive-fitting and fluid-tight second connection.

[0026] A method for producing a temperature control plate comprises the following steps:

[0027] - providing a connecting piece having an outer flange and a plug section;

[0028] - providing a first plate element;

[0029] - a shaped portion is formed in the first plate element and a mounting opening is produced in the first plate element;

[0030] - when constructing the shaped portion, the bottom of the shaped portion and / or the surrounding edge of the assembly opening are displaced relative to the plate plane of the first plate body;

[0031] - inserting the plug section into the assembly opening until the outer flange abuts against the first plate element;

[0032] - deforming the end section of the plug section into an inner flange;

[0033] - forming an annular groove between the outer flange and the inner flange, and fixing the edge of the assembly opening in the annular groove between the outer flange and the inner flange;

[0034] - providing a second plate element and forming a plate stack constructed from the first plate element and the second plate element, between which a brazing material is or has been applied;

[0035] - placing the plate stack into a heated forming brazing mold, the forming brazing mold having a lower mold and an upper mold;

[0036] - closing the forming brazing die and clamping the plate stack between the lower die and the upper die;

[0037] - heating the plate stack;

[0038] - by introducing an active medium into the intermediate spaces between the plate elements of the plate stack, the intermediate spaces are subjected to an internal pressure, and a channel is formed in at least one plate element;

[0039] - melting the brazing material between the plate elements and joining the plate elements at the abutting joint surfaces by means of a brazing technique, and joining the connecting piece to the first plate element by means of a brazing technique;

[0040] - Opening the mold for forming brazing and removing the temperature control plate from the mold for forming brazing.

[0041] The production of the partial shaped portion in the first plate element and the production of the assembly opening can be carried out in parallel or staggered relative to one another. First, the shaped portion can be formed in the form of a local recess or pre-stressed portion in the region of the first plate element and then the assembly opening can be punched out in the shaped portion or in the bottom of the shaped portion. However, it is also possible to produce the shaped portion and the assembly opening simultaneously. It is also possible to first produce the assembly opening in the plate element and then deform the region around the assembly opening and form the shaped portion using a deformation technique.

[0042] The bottom of the shaped part and / or the surrounding edge of the assembly opening are displaced relative to the plate plane of the first plate body by the shaped part. The edge of the assembly opening is then extended in particular in an S-shape. The connecting piece is inserted with its plug section into the assembly opening until the outer flange rests on the first plate element.

[0043] The end section of the plug-in socket is then plastically deformed and forms an inner collar.

[0044] The inner flange on the plug section is formed radially outwardly in a circumferential manner. Here, the inner flange is oriented at an angle of substantially 90° to the longitudinal axis of the connecting pipe. The edge of the assembly opening is received in an annular groove formed between the outer flange and the inner flange in a form-fitting and fluid-tight manner.

[0045] Preferably, the deformation of the end section on the plug section is carried out in two stages. In a first deformation stage, the end section is deformed or bent outward. Here, the end section is preferably bent at an angle of approximately 45° to the longitudinal axis of the connecting piece. In a second deformation stage, the end section is turned radially, more precisely, in particular at an angle of approximately 90° to the longitudinal axis of the connecting piece.

[0046] Between the outer and inner flanges and the edge of the assembly opening extending between them in the annular groove, a press connection is produced by plastic deformation of the engagement partner, in particular the inner flange.

[0047] The plate elements are connected to each other in a material-locking manner in a profile soldering die. In the profile soldering die, the connection piece is also soldered to the first plate element.

[0048] The forming brazing die is heated to a die temperature at which both the internal high pressure forming process for forming the channel and the joining process by brazing technology are performed. In particular, the die temperature is between 540° C. and 670° C., and particularly advantageously, the die temperature is between 550° C. and 640° C.

[0049] In order to produce a temperature control plate, a plate stack is formed, which consists of a first plate element and a second plate element. The plate elements consist of a metallic material, in particular a light metal alloy. A brazing material is applied between the plate elements or is applied when the plate stack is formed. At least the first plate element has a connecting piece which is joined to the first plate element according to the invention. The plate stack is placed in a heated forming brazing mold. This forming brazing mold has a lower mold and an upper mold. The forming mold is closed, and the lower mold and the upper mold are displaced relative to each other.

[0050] An advantageous construction scheme of the method according to the invention provides that the closing process of the profile brazing die is interrupted before reaching the closed position. When the plate stack has been inserted, the upper die and the lower die are held at a distance from each other in this holding position. The holding position is maintained for a holding time. Here, the plate stack located on the lower die is heated. Following the holding time, the closing movement is continued, the profile brazing die is closed, and the plate stack is clamped between the lower die and the upper die. The plate stack is further heated to the brazing temperature in a manner that is clamped in the profile brazing die. In order to construct one or more channels in at least one of the plate elements, an internal pressure is applied to the gap between the plate elements clamped in the profile brazing die. For this purpose, an active medium is introduced into the gap and a channel structure having at least one or more channels is generated by internal high pressure technology. The introduction of the active medium into the gap between the plate elements can be carried out via a connecting pipe that has been previously connected in a form-locking and fluid-tight manner.

[0051] After the mold brazing die has been opened and, if necessary, a cooling phase has been initiated, the temperature control plate can be removed from the brazing die. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The present invention is described in detail below with the aid of the accompanying drawings. In the accompanying drawings:

[0053] Figure 1 A perspective view showing a portion of a temperature control plate and a diagram of a connecting pipe;

[0054] Figure 2A portion of a plate element is shown, wherein a mounting opening is shown in a top view;

[0055] Figure 3 Shown after manufacturing the molded part Figure 2 The diagram is a cross-sectional view along line AA;

[0056] Figure 4 The connecting nozzle is shown in cross section;

[0057] Figure 5 A sectional view showing a first plate element of a temperature control plate and a connecting pipe connected thereto;

[0058] Figure 6 shows a deformation die having a representation of a first deformation stage for fixing the connecting piece in the assembly opening of the first plate element; and

[0059] Figure 7 The forming tool is shown with a representation of a second forming stage for fixing the connecting piece in the assembly opening of the first plate element. DETAILED DESCRIPTION

[0060] Figure 1 A detail of a first plate element 1 of a temperature control plate and a connecting piece 2 fastened to the plate element 1 are shown.

[0061] Thermostatic plates are used for cooling batteries, in particular vehicle batteries of motor vehicles. Usually, thermostatic plates have a plate body, which is composed of two plate elements. Here, a first plate element 1 of the plate elements is shown. Usually, the thermostatic plate has two connecting pipes 2 for the inflow and outflow of a thermostatic fluid. The first plate element 1 shown here is a completely or almost completely flat bottom plate. The plate body of the thermostatic plate is completed by a second plate element, which is a channel plate having a channel structure with at least one thermostatic channel.

[0062] The first plate element 1 and the second plate element are positioned one above the other and form a plate body. The surfaces of the plate elements that abut against each other are completely or partially provided with a brazing material. In particular, a brazing material in the form of a plated brazing layer is pre-applied to one of the plate elements. The surfaces of the plate elements that abut against each other are completely or partially joined to each other. The connecting pipe 2 is joined to the first plate element 1 in a form-fitting and materially bonded manner.

[0063] The connecting pipe 2 has an outer connecting section 3. This connecting section is configured for connecting a temperature control fluid pipeline. In addition, the connecting pipe has an outer flange 4 extending radially outward from the connecting section 3 (see Figure 4 ). In the extension of the connection section 3, the connection piece 2 has a plug section 5. A through opening 6 extends through the connection piece 2 in its longitudinal direction.

[0064] An assembly opening 7 is formed in the first plate element 1 (see Figure 2 and Figure 3 In the embodiment shown, the assembly opening 7 is circular. The assembly opening 7 has a diameter that is coordinated with the outer diameter of the plug section 5 .

[0065] The assembly opening 7 is arranged in the profile 8 of the first plate element 1. The profile 8 is formed by a local recess 9 in the first plate element 1. The assembly opening 7 has a circumferential edge 10. The edge 10 is configured to be S-curved. The edge 10 of the assembly opening 7 is displaced in one direction relative to the plate plane PE of the first plate element 1. This is achieved in deformation technology by push deformation or pressure deformation.

[0066] The outer flange 4 has a receptacle 12 in the form of a circumferential groove on its flange side 11 facing the plate element 1. A soldering material in the form of a soldering ring 13 is received in the receptacle.

[0067] The connecting piece 2 is fixed to the first plate element 1. This is achieved in a form-fitting manner by plastic deformation of the end section 14 of the plug section 5. For this purpose, the end section 14 is crimped and a crimp connection is produced.

[0068] Figure 5 The illustration of shows a connection piece 2 which is connected to the first plate element 1 in a form-fitting manner.

[0069] In order to mount the connection piece 2 on the first plate element 1, the connection piece 2 is inserted with its plug section 5 into the assembly opening 7 until the outer flange 4 rests externally on the first plate element 1. The plug section 5 then protrudes in the longitudinal direction of the connection piece 2 relative to the inner face 15 of the first plate element 1. The flange side 11 and the soldering ring 13 positioned in the receptacle 12 rest circumferentially on the outer face 16 of the first plate element 1 adjacent to the shaped portion 8.

[0070] The positive-locking press-fit joining of the connecting piece 2 to the first plate element 1 is carried out in two stages. Figure 6 and Figure 7 Explain.

[0071] The first deformation stage is Figure 6 Shown in.

[0072] Figure 7 The illustration shows the second deformation stage.

[0073] The crimping process and the production of the crimped connection between the connecting piece and the first plate element 1 take place in two forming tools 17 , 18 which are identically designed and differ essentially only by the shaping contour of their dies 19 and 20 .

[0074] exist Figure 6The first forming die 17 is shown in FIG.

[0075] Figure 7 A second forming die 18 is shown.

[0076] The forming tool 17 , 18 essentially comprises an upper positive die 19 or 20 , a counter holder 21 with a connecting piece receptacle 22 , as well as a hold-down device 23 and an upper damping element 24 arranged in the hold-down device 23 .

[0077] In order to establish a crimp connection between the connecting tube 2 and the first plate element 1, the plate element 1 is positioned in the first molding die 17 with the plug section 5 of the connecting tube 2 inserted into the assembly opening 7. The connecting tube 2 extends into the tube receptacle 22 with its connecting section 3. The plug section 5 protrudes axially in the longitudinal direction of the connecting tube 2 in the direction of the male die 19. The first plate element 1 is clamped between the matching retainer 21 and the clamping device 23 and the male die 19 is axially displaced. The male die 19 is lowered in the direction of the end section 14. This is done by applying an external axial force. The male die 19 has a molding profile 25, which abuts on the end section 14 of the plug section 5 on the inside when the male die 19 is axially displaced. The molding profile has an inclined surface 26 extending at an angle of approximately 45°. This inclined surface abuts on the end section 14. The inclined surface 26 acts as a wedge and transmits radial forces to the end section 14 , so that it bends outwards relative to the longitudinal axis L of the connection piece 2 . Figure 6 The end section 14 is bent outwards at an angle of approximately 45° to the longitudinal axis L of the connection piece 2 .

[0078] The components, namely the first plate element 1 and the connection piece 2 pre-fixed thereto, are then transferred into the second forming mold 18. The male die 20 of the second forming mold 18 has a forming contour 27, which is provided and designed to tilt or bend the end section 14 of the plug section 5 bent outward in the first deformation phase at a right angle. For this purpose, the forming contour 27 has a forming surface 28 oriented at a right angle to the longitudinal axis L of the connection piece 2. By lowering the male die 20, the end section 14 is deformed at a right angle to the longitudinal axis L of the connection piece 2, in particular at an angle of about 90°, and the components are pressed together. Figure 7 This is shown in the diagram.

[0079] Both the forming die 17 and the forming die 18 have a mandrel 29 which protrudes in the extension of the male die 19 or 20 and projects into the through-opening 6 of the connecting piece 2. As a result, the connecting piece 2 is supported on the inside in the region of the outer flange 4 and the plug section 5, in particular on the inner periphery of the through-opening 6. The mandrel 29 can be used as a height or stroke limiter in cooperation with an inner stop. For this purpose, the axial displacement stroke of the male die 19, 20 is limited by a stop which bears against the mandrel 29 at the end.

[0080] The end section 14 of the plug section 5 is formed as an inner flange 30 pointing radially outward from the connection piece 2 (see also Figure 5 ).

[0081] An annular groove 31 is formed between the outer flange 4 and the inner flange 30 of the connection piece 2. The peripheral edge 10 of the assembly opening 7 is received in the annular groove 31 and is pressed positively and fluid-tightly joined between the outer flange 4 and the inner flange 30.

[0082] The inner flange 30 has a wall thickness s. The profile 8 has a depth t. The depth t of the profile 8 is greater than or equal to the wall thickness s of the inner flange 30. The profile 8 is geometrically configured such that the inner flange 30 is accommodated in the profile 8 or the recess 9 and in particular is substantially flush with the adjacent inner surface 15 of the first plate element 1.

[0083] The wall thickness s is between 0.5 mm and 1.0 mm (in each case inclusive). The depth t of the shaped portion 8 is dimensioned accordingly. In particular, the depth t of the shaped portion 8 and the wall thickness s of the inner flange 30 correspond to one another and are dimensioned substantially identically, so that laminar flow conditions prevail in the transition region when a temperature control fluid flows through.

[0084] Then, the first plate element 1 and the connecting pipe 2 joined thereto are fed to other manufacturing processes for manufacturing the temperature control plate. The first plate element 1 is combined with the second plate element to form a plate stack. At least one of the two plate elements is provided with a brazing material, in particular, a plated brazing material layer. The plate stack consisting of two plate elements is clamped in a forming brazing mold. For this purpose, the forming brazing mold is closed and the plate stack is clamped between the lower mold and the upper mold of the forming brazing mold. In the forming brazing mold, the plate stack is heated to a temperature above the melting temperature of the brazing material. In the clamped forming brazing molds 15, 16, an active medium is introduced into the gap between the plate elements and a channel structure with at least one channel is generated by internal high pressure technology. The active medium can be input via the connecting pipe 2. In the forming brazing mold, the brazing ring 13 positioned in the receiving portion 12 is also melted so that the brazing ring is converted into a liquid phase. After the brazing material solidifies, a material lock connection between the plate elements and between the first plate element 1 and the connecting pipe 2 is formed on the joint surfaces abutting against each other.

[0085] Reference numerals list

[0086] 1 Board components

[0087] 2 Connection pipe

[0088] 3 Connecting sections

[0089] 4 Outer flange

[0090] 5 Plug section

[0091] 6 Through opening

[0092] 7 Mounting opening

[0093] 8 Forming Department

[0094] 9 recess

[0095] 10 Edge of the assembly opening

[0096] 11 Flange side

[0097] 12 Accommodation

[0098] 13 Brazing ring

[0099] 14 End section

[0100] 15 Inner surface of plate element

[0101] 16 Outside of the plate element

[0102] 17 Molding mold

[0103] 18 Molding mold

[0104] 19 Male mold

[0105] 20 Male mold

[0106] 21 Mating retainer

[0107] 22. Pipe receiving part

[0108] 23. Clamping device

[0109] 24 Buffer elements

[0110] 25 Molding profile

[0111] 26 Inclined surface

[0112] 27 Molding profile

[0113] 28 Molding surface

[0114] 29 Mandrel

[0115] 30 Inner flange

[0116] 31 Annular groove

[0117] L Longitudinal axis

[0118] PE board plane

[0119] s Wall thickness

[0120] t Depth

Claims

1. A temperature control plate for temperature control of electronic components and / or batteries, the temperature control plate having a plate body, the plate body having a first plate element (1) and a second plate element and at least one connecting pipe (2) for a temperature control fluid, the first plate element, the second plate element and the connecting pipe being joined to each other by soldering technology, the connecting pipe (2) having an outer flange (4) and a plug section (5), the outer flange (4) being in contact with the first plate element (1) on the outside, and the plug section (5) being positioned in an assembly opening (7) of the first plate element (1), and the end section (14) of the plug section (5) being deformed, characterized in that The assembly opening (7) is arranged in a molded portion (8) in the first plate element (1), the circumferential edge (10) of the assembly opening (7) is shifted relative to the plate plane (PE) of the first plate element (1), and the end section (14) is formed into an inner flange (30), an annular groove (31) is constructed between the outer flange (4) and the inner flange (30), and the edge (10) is accommodated in the annular groove (30).

2. The temperature control plate according to claim 1, characterized in that: The inner flange (30) has a wall thickness (s), and the molded portion (8) has a depth (t), and the depth (t) of the molded portion (8) is greater than or equal to (≥) the wall thickness (s) of the inner flange (30).

3. The temperature control plate according to claim 1 or 2, characterized in that: The shaped portion (8) is geometrically dimensioned such that the inner flange (30) is received therein and, in particular, is substantially flush with an adjacent inner surface (15) of the first plate element (1).

4. The temperature control plate according to any one of claims 1 to 3, characterized in that: A brazing material, in particular a brazing ring (13) and / or a seal is inserted between the outer flange (4) and the first plate element (1).

5. The temperature regulating plate according to claim 4, characterized in that: The soldering material, in particular the soldering ring (13) and / or the seal is arranged in a receptacle (12) in the outer flange (4).

6. The temperature control plate according to any one of claims 1 to 5, characterized in that: The plate element (1) and / or the connecting piece (2) are made of a light metal material, in particular an aluminum alloy.

7. Method for producing a temperature control plate with a connecting pipe (2), characterized in that The method comprises the following steps: - providing a connecting piece (2) having an outer flange (4) and a plug section (5); - providing a first plate element (1); - forming a shaped portion (8) in the first plate element (1) and producing a mounting opening (7) in the first plate element (1), - when constructing the shaped portion (8), the bottom of the shaped portion (8) and / or the surrounding edge (10) of the assembly opening (7) are displaced relative to the plate plane (PE) of the first plate body (1); - inserting the plug section (5) into the assembly opening (7) until the outer flange (4) comes into contact with the first plate element (1); - deforming the end section (14) of the plug section (5) into an inner flange (30); - forming an annular groove (31) between the outer flange (4) and the inner flange (30), and fixing the edge (10) of the assembly opening (7) in the annular groove (31) between the outer flange (4) and the inner flange (30); - providing a second plate element and forming a plate stack from said first plate element (1) and said second plate element, between each of said plate elements a brazing material is applied or has been applied; - placing the plate stack into a heated forming brazing mold, the forming brazing mold having a lower mold and an upper mold; - closing the forming brazing die and clamping the plate stack between the lower die and the upper die; - heating the plate stack; - by introducing an active medium into the interspaces between the plate elements of the plate stack, the interspaces are subjected to an internal pressure and a channel is formed in at least one plate element; - melting the brazing material between the plate elements and joining the plate elements at the abutting joint surfaces by means of a brazing technique, and joining the connecting piece (2) to the first plate element (1) by means of a brazing technique; - Opening the mold for forming brazing and removing the temperature control plate from the mold for forming brazing.

8. The method according to claim 7, characterized in that The inner collar (30) is formed circumferentially and radially outwardly on the plug section (5).

9. The method according to claim 7 or 8, characterized in that: The shaped portion (8) in the first plate element (1) is geometrically dimensioned such that the inner collar (30) is located in the receptacle (12) and in particular ends substantially flush with an adjacent inner surface (15) of the first plate element (1).

10. The method according to any one of claims 7 to 9, characterized in that The deformation of the end section (14) on the plug section (5) is carried out in two stages, wherein in a first deformation stage the end section (14) is bent outwards, in particular at an angle of approximately 45° to the longitudinal axis (L) of the connecting piece (2), and in a second deformation stage the end section (14) is deflected radially, in particular at an angle of approximately 90° to the longitudinal axis (L) of the connecting piece (2).

11. The method according to any one of claims 7 to 10, characterized in that The edge (10) of the assembly opening (7) engages in the annular groove (31) between the outer flange (4) and the inner flange (30) in a form-fitting and fluid-tight manner.

12. The method according to any one of claims 7 to 11, characterized in that A brazing material, in particular a brazing ring (13) and / or a seal is inserted between the outer flange (4) and the first plate element (1).

13. The method according to any one of claims 7 to 12, characterized in that The forming brazing mold is heated to a mold temperature between 540°C and 670°C, in particular between 550°C and 640°C.

14. The method according to any one of claims 7 to 13, characterized in that The closing process of the mold brazing die is interrupted for a holding time before reaching the closed position, the upper die and the lower die are held at a distance from each other when the plate stack has been inserted, and after the holding time, the mold brazing die is closed and the plate stack is clamped between the lower die and the upper die.

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