Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
  • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
  • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• the present invention relates to a cell monitoring module for a battery cell monitoring unit with at least two cell monitoring modules referred to in the preamble of claim 1 and a battery cell monitoring unit with at least two cell monitoring modules of the type mentioned in the preamble of claim 7.
• Battery cells of batteries such as those used in electric vehicles or hybrid vehicles, must be monitored for their functionality and state of charge.
• individual cell monitoring units each with an ASIC, ie an application-specific, integrated electrical circuit, are used for this purpose, which are installed multiple times in the battery system to be monitored and are each assigned to one or more battery cells.
• the number of battery cells to be monitored determines the number of cell monitoring units required for this purpose.
• the advantage of this solution is its high flexibility.
• battery systems are known in which a single cell monitoring unit with multiple ASICs is used. Although this reduces the required components and thus the space compared to the first solution. However, this solution is specially configured for a specific battery system and thus can not be used for other battery systems.
• the present invention has for its object to enable a scalable battery cell monitoring.
• An essential advantage of the solution according to the invention is, in particular, that a substantially free scalability of the cell monitoring is made possible by the use of a modular structure of the battery cell monitoring.
• a single cell monitoring module can be used to monitor one or preferably a plurality of battery cells. Due to the mechanical and electrical connection of several cell monitoring modules, which are of identical construction with regard to the module connection, the system connection, the coupling plug and the coupling socket, the number of monitorable battery cells can be correspondingly increased. In this way, the production and application of a matched to the particular case battery cell monitoring is significantly simplified by the use of at least in the above features identically constructed cell monitoring modules, and thus also cheaper to implement.
• the coupling plug and the coupling socket are formed on the housing of the cell monitoring module.
• a structurally particularly simple embodiment of the cell monitoring module according to the invention provides that the coupling plug and the coupling socket have such mutually corresponding clamping means that the coupling plug of the cell monitoring module and the coupling socket of a respect to the module connection, the system connection, the coupling plug and the coupling socket identical other cell monitoring module in the assembly position the battery cell monitoring unit a clamping connection, in particular with an interference fit, form.
• a press fit a very secure, non-detachable mechanical connection between the coupling plug and the corresponding coupling bushing and thus between two interconnected cell monitoring modules is created.
• the coupling plug and the coupling socket have latching means corresponding to one another such that the coupling plug of the cell monitoring module and the coupling socket of the other cell monitoring module form a latching connection in the assembly position of the battery cell monitoring unit. In this way, a releasable mechanical connection between two interconnected cell monitoring modules realized in a structurally simple way.
• a further advantageous development of the cell monitoring module according to the invention provides that the coupling plug and the coupling socket have mutually corresponding positioning means that the coupling plug of the cell monitoring module and the coupling socket of the other cell monitoring module are positioned in the assembly position of the battery cell monitoring unit to each other. This ensures a precise alignment of the two cell monitoring modules to be connected to one another, in particular during the joining process.
• a particularly advantageous development of the cell monitoring module according to the invention provides that the coupling plug and the coupling bushing have such mutually corresponding force transmission means that transmit in the assembly position of the battery cell monitoring unit between the coupling plug of the cell monitoring module and the coupling socket of the other cell monitoring module mechanical forces transmitted at least partially via the power transmission means become. In this way, a mechanically particularly robust arrangement is created.
• An advantageous development of the battery cell monitoring unit according to the invention provides that the battery cell monitoring unit has at least one locking element, wherein the locking element locks in a locking position of the battery cell monitoring unit the coupling plug and the clutch connector engaged with the coupling socket form-fitting manner. This ensures a secure mechanical connection between two interconnected cell monitoring modules even in adverse environmental and operating conditions, such as vibration load.
• the locking element has a latching hook which cooperates in the locking position of the battery cell monitoring unit with a latching receptacle formed on the coupling plug or on the coupling bushing engaged with the coupling plug.
• a further advantageous development of the battery cell monitoring unit according to the invention provides that the locking element and the coupling plug and / or the coupling bushing engaged with the coupling plug have mutually corresponding positioning means. In this way, a precise alignment of the locking element with the coupling plug and / or the coupling plug corresponding to the coupling socket is ensured.
• the locking element and the coupling plug and / or the coupling bushing engaged with the coupling plug have mutually corresponding coding means. This ensures that the locking element is not brought in undesirable manner with the coupling plug and / or corresponding to the coupling plug coupling bush engaged.
• FIG. 1 shows a first embodiment of a battery cell monitoring unit according to the invention in a perspective assembly view
• FIG. 2 shows two cell monitoring modules according to the invention of the first embodiment in a perspective disassembly view
• FIG. 3 shows the two cell monitoring modules according to the invention from FIG. 2 in a first sectional assembled view in a partial view;
• FIG. 4 shows the two cell monitoring modules according to the invention from FIG. 2 in a second sectional view in a partial view
• FIG. 5 shows the two cell monitoring modules according to the invention from FIG. 2 in a third sectional assembly view in partial view
• FIG. 6 shows a second embodiment of a battery cell monitoring unit according to the invention in a perspective disassembly view
• FIG. 7 shows the two cell monitoring modules according to the invention from FIG. 6 in a perspective disassembly view in partial view;
• FIG. 8 shows the two cell monitoring modules according to the invention from FIG. 6 in a sectional view in a partial view
• FIG. 9 shows a third exemplary embodiment of a battery cell monitoring unit according to the invention in a perspective disassembly view
• FIG. 10 shows the third embodiment of Figure 9 in a perspective assembly view.
• Fig. 1 the two cell monitoring modules according to the invention of FIG. 9 in a perspective locking view in partial view and
• FIG. 12 shows the two cell monitoring modules according to the invention from FIG. 9 in a cutaway view in partial view.
• FIGS. 1 to 12 three embodiments of the invention will be explained.
• the same or equivalent components are provided with the same reference numerals.
• the second and third embodiments only the distinguishing features of the first embodiment will be discussed. Incidentally, the embodiments agree.
• a first embodiment of a battery cell monitoring unit 2 according to the invention is shown.
• the present battery cell monitoring unit 2 consists of four cell monitoring modules 4 according to the invention, which are constructed completely identical. However, this is not absolutely necessary, which will be explained in more detail below.
• Each of the cell monitoring modules 4 has at least one electrical cell connection 6 designed as a plug socket for the signal-transmitting connection of the circuit carrier to a battery cell to be monitored, the battery cell not being shown in the figures.
• each cell monitoring module 4 has a housing 8 on which a coupling plug 10 is formed on one side and a coupling bush 12 is formed on a side of the housing 8 opposite the coupling plug 10.
• an electrical module connection 14 designed as a plug socket can be seen in one of the cell monitoring modules 4.
• FIG. 2 shows two of the four completely identical cell monitoring modules 4 from FIG. 1 in an enlarged perspective dismantling view.
• the housing 8 is here formed in two parts and has a plastic cover 8.1 and a metal bottom 8.2.
• a circuit carrier with electrical Components, such as an ASIC arranged.
• the circuit carrier and the electrical components are not shown and connected for the purpose of cooling with the metal bottom 4.2 of the housing 4 thermally conductive.
• an electrical system connection 16 can also be seen in FIG.
• the module connection 14 and the system connection 16 are connected in a signal-transmitting manner to the circuit carrier and thus to the electrical components located thereon.
• system connection 1 6 is designed for signal-transmitting connection of the circuit carrier with a battery management system, not shown.
• the electrical data and / or electrical signals are forwarded by the cell monitoring modules 4 to the battery management system for further processing.
• further physical variables of the battery are detected and processed in the battery management system.
• the cell monitoring modules 4 are designed completely identical.
• the coupling socket 12 of the cell monitoring module 4 shown on the left in the image plane of FIG. 2 is identical to the coupling socket 12 of the cell monitoring module 4, which is clearly visible in FIG. 2;
• the coupling plug 10 has two latching means 10.1 designed as latching hooks.
• the latching hooks 10.1 engage in the transfer of the two cell monitoring modules 4 in an assembly position shown in Fig. 1 of the battery cell monitoring unit 2 and thus the cell monitoring modules 4 in a corresponding and designed as latching receptacles locking means 12.1 of the coupling plug 10 is in engagement with a coupling bushing 12 a.
• the coupling plug 10 has two positioning mandrels 10.2, which are formed adjacent to the latching hooks 10.1 on the housing 8.
• the positioning mandrels 10.2 each have a chamfer at the free ends of the positioning mandrels 10.2 during the transfer into the assembly position.
• the metal bottom 8.2 of the housing 8 has both on the side of the coupling plug 10 as well as on the side of the coupling socket 12 at both edges connecting tabs 8.2.1.
• FIG. 3 shows the two cell monitoring modules 4 from FIG. 2 in the assembly position in a first sectional view, wherein the section is laid in the region of the latching means 10.1, 12.1.
• the positioning means 10.2, 12.2 are arranged directly below the locking means 10.1, 12.1, these are also shown in Fig. 3. It can be clearly seen that in the assembly position of the battery cell monitoring unit and thus in the assembly position shown in Fig. 3 of the cell monitoring modules 4, the locking hooks 10.1 of the coupling plug 10 of the left in the image plane cell monitoring module 4 in the locking receptacles 12.1 of the coupling socket 12 of the right in the image plane hooked cell monitoring module 4 and thus establish a releasable mechanical connection between the two cell monitoring modules 4.
• the positioning mandrels 10.2 of the coupling plug 10 of the cell monitoring module 4 shown on the left are in engagement with the positioning receptacles 12.2 of the coupling socket 12 of the cell monitoring module 4 shown on the right.
• FIG. 4 shows the two cell monitoring modules 4 from FIG. 2 in a second sectional view in a partial view.
• the representation is rotated by 180 °, according to which the coupling plug 10 is now in the image plane right and the corresponding coupling bushing 12 left. Therefore, in Fig. 4, the sockets 6 can be seen, which connect the respective cell monitoring module 4 with the or the associated, not shown battery cells signal transmitting.
• the section is placed here in the area of the force transmission means 10.3, 12.3, so that it can be clearly seen how the bolts 10.3 of the coupling plug 10 of the cell monitoring module 4 shown on the right engage in the assembly receptacle 12.3 of the coupling bush 12 of the cell monitoring module 4 shown on the left in the illustrated assembly position ,
• FIG. 5 how the connecting straps 8.2.1 of the metal shelves 8.2 of the two cell monitoring modules 4 shown in the assembly position overlap one another so that the screw 18 can be inserted through the through-holes thereof.
• a second exemplary embodiment of a battery cell monitoring unit 2 according to the invention is explained below with reference to FIGS. 6 to 8. The second embodiment is constructively much simpler and thus less expensive compared to the first embodiment.
• FIG. 6 shows the battery cell monitoring unit 2 according to the invention according to the second embodiment in a disassembly position.
• the second embodiment has only two cell monitoring modules 4, which form the battery cell monitoring unit 2 in the assembly position shown in FIG.
• the cell monitoring modules 4 are likewise constructed completely identical here. Accordingly, the two cell monitoring modules 4 have identical coupling plugs 10 and coupling sockets 12.
• the housing 8 also each have a plastic cover 8.1 and a metal floor 8.2.
• the heat-conducting connection between the two metal floors 8.2 in the assembly position shown in FIG. 8 is not produced by overlapping connecting straps.
• this is realized in that the two metal floors 8.2 each have a contact surface 8.2.2, wherein the contact surfaces 8.2.2 of both metal floors 8.2 in the assembly position butt against each other.
• FIG. 7 shows the two cell monitoring modules 4 according to the invention from FIG. 6 in a detail view rotated to FIG. 6.
• the present embodiment has no locking means, but clamping means 10.4 and 12.4, namely four formed as clamping pins clamping means 10.4 of the coupling plug 10 of the left in the image plane cell monitoring module 4 and four corresponding thereto designed as clamping shots clamping means 12.4 of the coupling socket 12th
• the cell monitoring module 4 shown on the right in the image plane.
• the clamping pins 10.4 and the clamping receptacles 12.4 are dimensioned such that they form an interference fit and thus a non-detachable connection in the assembly position shown in Fig. 8.
• the clamping pins 10.4 are chamfered at their free ends, so that the mating of the clamping means 10.4, 12.4 is facilitated in the transfer of cell monitoring modules 4 in the assembly position.
• the arrangement of the clamping means 10.4, 12.4 in the edge region of the cell monitoring modules 4 ensures a high mechanical stability.
• FIG. 8 shows the two cell monitoring modules 4 of the second embodiment in the aforementioned assembly position in a sectional representation in the edge region in a partial view.
• Two of the four clamping pins 10.4 of the coupling plug 10 of the cell monitoring module 4 shown on the left in the image plane are clearly visible in engagement with the two corresponding clamping receptacles 12.4 of the coupling socket 12 of the cell monitoring module 4 shown on the right in the image plane.
• FIGS. 9 to 12 show a third exemplary embodiment of a battery cell monitoring unit 2 according to the invention. Analogous to the second embodiment, the present battery cell monitoring unit 2 is formed in the assembly position shown in Fig. 10 by two completely identical cell monitoring modules 4.
• FIG. 9 shows the battery cell monitoring unit 2 in a disassembly position. Again, it is a structurally simpler compared to the first embodiment embodiment.
• the coupling plug 10 and the coupling socket 12 of each of the cell monitoring modules 4 are structurally similar in the present embodiment. Both the coupling plug 10 and the coupling socket 12 have tabs 10.5, 12.5, wherein the tabs 10.5 of the coupling plug 10 and the tabs 12.5 of the coupling socket 12 are formed for receiving a locking pin made of plastic and shown in Fig. 10 locking element 20.
• the insertion tabs 10.5, 12.5 through openings, which are adapted to the contour of the locking pin 20 in the manner explained in more detail below.
• the third embodiment is shown in an assembly position.
• the insertion tabs are 10.5 of the coupling plug 10 of the left in the image plane cell monitoring module 4 in engagement with the tabs 12.5 of the coupling socket 12 of the right in the image plane cell monitoring module 4.
• engagement means that the tabs 10.5 in the free space two adjacent plug-in tabs 12.5 are inserted.
• the two cell monitoring modules 4 are only slightly mechanically held together here in the assembly position. Only by inserting the two locking pins 20, of which only the front one is shown in FIG. 10, the two cell monitoring modules 4 are locked together and thus firmly connected to each other. After complete insertion of the locking pins 20 into the passage openings of the plug-in straps 10.5, 12.5, the locking position of the cell monitoring modules 4 and thus of the battery cell monitoring unit 2 shown in FIGS.
• the locking pins 20 of completely identical design have three retaining lugs 20.2 at their free ends shown in the image plane of FIG. 11 above, by means of which the respective locking pin 20 is secured on one side. Furthermore, the locking pins 20 are formed three-winged; see in particular Fig. 12. For a first wing 20.3 two second wings 20.4 are arranged at 90 ° angle. In Fig. 12, only the front of the two second wings 20.4 can be seen; the rear second wing 20.4 is covered by the front second wing 20.4. Furthermore, the first and the two second wings 20.3, 20.4 of the locking pins 20 each have an insertion bevel 20.3.1, 20.4.1.
• the insertion bevels 20.3.1 and 20.4.1 serve to facilitate the insertion of the locking pin 20 into the insertion lugs 10.5, 12.5.
• the insertion bevels 20.3.1 and 20.4.1 also serve the purpose of aligning the coupling plug 10 and the coupling bush 12 during the transfer from the assembly position shown in FIG. 10 into the locking position shown in FIGS. 11 and 12, So to position.
• the first and second wings 20.3, 20.4 of the locking pins 20 thus also fulfill the function of positioning means which position the two cell monitoring modules 4 relative to one another with the passage openings formed in the insertion tabs 10.5, 12.5.
• the passage openings of the insertion tabs 10.5, 12.5 are thus formed as to the insertion bevels 20.3.1, 20.4.1 corresponding positioning.
• the invention is not limited to the present embodiments.
• the cell monitoring modules of a battery cell monitoring unit according to the invention need not be constructed completely identical. Rather, it is sufficient if the cell monitoring modules are identical in terms of the module connection, the system connection, the coupling plug and the coupling socket.
• the inner structure, ie the circuit carrier and the electrical components arranged thereon, can be designed differently. This results in even greater flexibility.
• the coupling plug and the coupling socket of the cell monitoring module according to the invention in type, shape, dimensioning and material in wide suitable limits freely selectable.
• a combination of the individual features of the illustrated embodiments would be conceivable.
• the locking elements could also be arranged captively on the cell monitoring modules.

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• Engineering & Computer Science (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Battery Mounting, Suspending (AREA)
• Connection Of Batteries Or Terminals (AREA)
• Secondary Cells (AREA)

Priority Applications (1)

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Citations (4)

Family Cites Families (2)

• 2016
  • 2016-08-25 DE DE102016115804.6A patent/DE102016115804A1/de active Pending
• 2017
  • 2017-08-21 WO PCT/EP2017/071031 patent/WO2018036965A1/de active Application Filing
  • 2017-08-21 CN CN201780045795.XA patent/CN109496376B/zh active Active

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