Patent application EP19207093A (EP), filed 2019-11-05
Publication number: EP3741876A1
Title: BATTERY COOLING PLATE
Abstract: The invention relates to a battery cooling plate comprising a main body portion having opposed ends and a first and second outer surface each defining a primary heat transfer surface between said opposed ends, said main body portion comprising a first outer plate and a second outer plate; at least one fluid flow passage formed within said main body portion between said first and second outer plates; the fluid flow passage having a first end for inletting a fluid into said fluid passage and a second end for discharging said fluid from said fluid flow passage, said first and second ends defining a flow direction through said fluid flow passage; each of said first and second outer plates has a central, generally planar portion surrounded by a peripheral flange; wherein the first and second outer plates have been joined to each other by means of remote laser welding; wherein the first outer plate is made of a 3xxx-series aluminium alloy comprising Mn in a range of 0.5% to 1.5% and Mg is a range of up to 0.06%, and on its side facing said fluid flow passage is provide with a clad liner of a 4xxx-series aluminium alloy having Mg up to 0.35%; and wherein the second outer plate is made of a 3xxx-series aluminium alloy comprising Mn in a range of 0.5% to 1.5% and Mg is a range of up to 0.06%.
IPC codes: C22C  21/    00            A I
C22C  21/    16            A I
F28F  21/    08            A I
Claims: number: 1
text: Battery cooling plate comprising of a main body portion having opposed ends and a first and second outer surface each defining a primary heat transfer surface between said opposed ends,
number: 2
text: Battery cooling plate according to claim 1, wherein the second outer plate is made of a 3xxx-series aluminium alloy comprising Mn in a range of 0.5% to 1.5% and Mg is a range of up to 0.06%, and on its side facing said fluid flow passage is provide with a clad liner of a 4xxx-series aluminium alloy having Mg up to 0.35%.
number: 3
text: Battery cooling plate according to claim 1 or 2, wherein the first outer plate has a thickness in a range of 0.2 mm to 4 mm.
number: 4
text: Battery cooling plate according to any one of claims 1 to 3, wherein the second outer plate has a thickness in a range of 0.2 mm to 4 mm.
number: 5
text: Battery cooling plate according to any one of claims 1 to 4, wherein the thickness of the clad liner of the first outer plate is in a range of 3% to 20% of the total outer plate thickness.
number: 6
text: Battery cooling plate according to any one of claims 2 to 5, wherein the thickness of the clad liner of the second outer plate is in a range of 3% to 20% of the total outer plate thickness.
number: 7
text: Battery cooling plate according to any one of claims 1 to 6, wherein the first outer plate is made from a 3xxx-series aluminium alloy comprising, in wt.%,
number: 8
text: Battery cooling plate according to any one of claims 1 to 7, wherein the second outer plate is made from a 3xxx-series aluminium alloy comprising, in wt.%,
number: 9
text: Battery cooling plate according to any one of claims 1 to 8, wherein the 3xxx-series aluminium alloy of the first and second outer plates are provided in a O, H1 or H2 temper.
number: 10
text: Battery cooling plate according to any one of claims 1 to 9, wherein the composition of the clad liner on the first outer plate is made from a 4xxx-series aluminium alloy comprising, in wt.%, 5% to 14% Si, preferably 5% to 11% Si, and up to 0.35% Mg, preferably up to 0.10% Mg.
number: 11
text: Battery cooling plate according to any one of claims 2 to 10, wherein the composition of the clad liner on the second outer plate is made from a 4xxx-series aluminium alloy comprising, in wt.%, 5% to 14% Si, preferably 5% to 11% Si, and up to 0.35% Mg, preferably up to 0.10% Mg.
number: 12
text: Battery cooling plate according to any one of claims 2 to 10, wherein the composition of the clad liner on the second outer plate is made from a 4xxx-series aluminium alloy comprising, in wt.%, 5% to 14% Si, preferably 5% to 11% Si, 0.25% to 4% Zn, and up to 0.35% Mg, preferably up to 0.10% Mg.
number: 13
text: Battery module comprising a battery pack including multiple spaced apart battery cells, and at least one battery cooling plate according to any one of claims 1 to 12 disposed in thermal contact with at least one adjacent battery cell whereby in operation a coolant can flow through a fluid flow passage in the battery cooling plate to cool an adjacent battery cell.
number: 14
text: Method of manufacturing a battery cooling plate according to any one of claims 1 to 12, comprising the steps of,
number: 15
text: Method according to claim 14, further comprising the step of inserting inlet and outlet manifolds into receptacles formed on the outer plates, and wherein the outer plates together form at least one fluid flow passage, the fluid flow passage having an inlet end and an outlet end, and the fluid flow passage having an inlet manifold and an outlet manifold, the inlet manifold being in fluid communication with the inlet of the fluid flow passage and the outlet manifold
Office action: search_report, dated 2020-11-25
Rejection reasons: inventive_step_epc_56
Prior art cited: ref_id: WO2004112992A2
ref_type: patent
severity: background
ref_id: US2012237805A1
ref_type: patent
severity: background
ref_id: US2017304954A1
ref_type: patent
severity: background
ref_id: - N.N.: "HEAT EXCHANGER ALUMINUM", 1 January 2014 (2014-01-01), XP055684863, Retrieved from the Internet <URL:https://www.aleris.com/wp-content/uploads/2014/08/Brochure_Heat-Exchanger-Aluminum_English_DC_2014_05_23_final-web.pdf> [retrieved on 20200409]
ref_type: npl
severity: background
ref_id: - HIREN R. KOTADIA ET AL: "Challenges and Opportunities in Remote Laser Welding of Steel to Aluminium", MATEC WEB OF CONFERENCES, vol. 269, 1 January 2019 (2019-01-01), pages 02012, XP055685260, DOI: 10.1051/matecconf/201926902012
ref_type: npl
severity: background
ref_id: - DR RÜDIGER BROCKMANN ET AL: "Laser Remote Welding of Aluminum without filler wire Laser Remote Schweißen ohne Zusatzmaterial Laser Remote Schweißen ohne Zusatzmaterial", 19 April 2012 (2012-04-19), XP055685267, Retrieved from the Internet <URL:http://www.european-coatings.com/content/download/106863/1949173/file/020_brockmann_bassi.pdf> [retrieved on 20200414]
ref_type: npl
severity: background
ref_id: US2012237805
ref_type: patent
severity: obviousness
ref_id: US2017304954
ref_type: patent
severity: obviousness
ref_id: - N.N., "HEAT EXCHANGER ALUMINUM", (20140101), URL: https://www.aleris.com/wp-content/uploads/2014/08/Brochure_Heat-Exchanger-Aluminum_English_DC_2014_05_23_final-web.pdf, (20200409), XP055684863 [Y] 1-15 * page  4  - page  8 *
ref_type: npl
severity: obviousness
ref_id: - HIREN R. KOTADIA ET AL, "Challenges and Opportunities in Remote Laser Welding of Steel to Aluminium", MATEC WEB OF CONFERENCES, (20190101), vol. 269, doi:10.1051/matecconf/201926902012, page 02012, XP055685260 [T] 1 * the whole document *
ref_type: npl
severity: background
ref_id: - Dr Rüdiger Brockmann ET AL, "Laser Remote Welding of Aluminum without filler wire Laser Remote Schweißen ohne Zusatzmaterial Laser Remote Schweißen ohne Zusatzmaterial", (20120419), URL: http://www.european-coatings.com/content/download/106863/1949173/file/020_brockmann_bassi.pdf, (20200414), XP055685267 [T] 1 * the whole document *
ref_type: npl
severity: background
Final disposition: pending (2020-11-25)