CN116344986A - Temperature and voltage acquisition integrated module and battery module - Google Patents
Temperature and voltage acquisition integrated module and battery module Download PDFInfo
- Publication number
- CN116344986A CN116344986A CN202310352151.2A CN202310352151A CN116344986A CN 116344986 A CN116344986 A CN 116344986A CN 202310352151 A CN202310352151 A CN 202310352151A CN 116344986 A CN116344986 A CN 116344986A
- Authority
- CN
- China
- Prior art keywords
- temperature
- substrate
- voltage
- acquisition
- pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 99
- 230000001681 protective effect Effects 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims description 24
- 239000003292 glue Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 238000004382 potting Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- 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
Abstract
The invention discloses a temperature and voltage acquisition integrated module, which is used for acquiring the temperature and voltage of a battery module and comprises the following components: the substrate with heat conduction and electric conduction performance is used for being connected with the bus bars in the battery module; the temperature acquisition circuit is attached to the substrate, and is insulated and isolated from the substrate through an insulating layer, and is provided with a temperature acquisition pad; the temperature sensor is welded on the temperature acquisition circuit; the voltage acquisition pad is arranged on the substrate and is electrically connected with the substrate. The temperature and voltage acquisition integrated module can realize standardization, optimize a temperature sensing heat conduction path and improve the performance of products. The invention also discloses a battery module using the temperature and voltage acquisition integrated module.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a temperature and voltage acquisition integrated module and a battery module.
Background
With the continuous development of power battery technology, the automation and modularization of the power battery system packaging become the main stream of development. The battery module in the power battery system is most important, and the battery module at present basically collects voltage information and temperature information of the battery module through the connector and transmits the collected state information of the battery module to the battery management system connected with the connector.
As in chinese patent CN202210923684.7, a temperature and voltage acquisition method, a temperature and voltage acquisition assembly and a battery module are disclosed, wherein the temperature and voltage acquisition assembly includes a circuit board, a busbar, a first acquisition sheet, a nickel sheet and a temperature sensor, the first acquisition sheet and the nickel sheet are integrated on the busbar, the support leg of the nickel sheet is connected with the circuit board, the temperature sensor is connected in the protection section of the first acquisition sheet through a heat conducting pad, the circuit board is connected with the temperature sensor through a first bonding pad, and the circuit board is connected with the nickel layer of the first acquisition sheet through a second bonding pad. However, it has the following problems: based on the installation relation among all the components, when the temperature and voltage acquisition assembly is assembled, the temperature sensor is welded on the first bonding pad, and then the first acquisition sheet is welded on the second bonding pad so as to cover the temperature sensor in the protection section, therefore, the temperature sensor cannot be integrated on the first acquisition sheet, and the whole temperature and voltage acquisition assembly can form a complete temperature acquisition and pressure acquisition module; to the battery module of different specifications, need correspond to prepare the temperature voltage acquisition subassembly of different specifications, when quantity or the size of battery core is different, then the specification of circuit board is the adaptation change in order to be required, and the quantity of busbar is the adaptation change in order to be required, and this will lead to can't realize the standardization of acquisition subassembly, and then leads to the material kind many, produce line technology many, manufacturing cost is high, problem that production efficiency is low.
As in chinese patent No. cn202020038565.X, a battery module voltage and temperature acquisition terminal and a battery module are disclosed, wherein the battery module voltage and temperature acquisition terminal includes a welding sheet, the welding sheet is used for welding to the busbar, the upper portion of welding sheet is provided with crimping terminal and NTC pot body side by side, crimping terminal is used for gathering voltage signal, NTC pot body is filled with epoxy for encapsulating the NTC thermistor therein to gather temperature signal. However, it has the following problems: the heat transfer route is a welding sheet-epoxy resin-NTC thermistor, when the NTC thermistor is positioned by using epoxy resin, the position of the NTC thermistor is difficult to unify, so that a larger gap needs to be kept between the NTC thermistor and the inner wall of the NTC potting body so as to avoid conduction between the NTC thermistor and the inner wall of the NTC potting body during potting, but the heat transfer route is longer, the heat transfer efficiency is lower, and abnormal temperature cannot be effectively and rapidly reacted; if the NTC thermistor is conducted with the potting body or the welding piece, a temperature-sensitive short circuit is formed, so that temperature collection cannot be performed.
Therefore, it is necessary to provide a temperature and voltage acquisition integrated module with short temperature sensing and heat conducting path and high performance, which can realize standardization.
Disclosure of Invention
In order to overcome at least one defect in the prior art, the invention provides a temperature and voltage acquisition integrated module which can realize standardization, optimize a temperature sensing heat conduction path and improve product performance.
The invention adopts the technical proposal for solving the problems that:
a temperature voltage collection integrated module for collecting temperature and voltage of a battery module, comprising:
the substrate with heat conduction and electric conduction performance is used for being connected with the bus bars in the battery module;
the temperature acquisition circuit is attached to the substrate, and is insulated and isolated from the substrate through an insulating layer, and is provided with a temperature acquisition pad;
the temperature sensor is welded on the temperature acquisition circuit;
the voltage acquisition pad is arranged on the substrate and is electrically connected with the substrate.
According to the temperature and voltage acquisition integrated module provided by the invention, the insulating layer plays an insulating protection role between the temperature acquisition circuit and the substrate, the temperature sensor is welded on the temperature acquisition circuit, the temperature of the battery core can be sequentially transmitted to the temperature sensor through the substrate and the insulating layer by utilizing the heat conduction characteristic of the substrate, and meanwhile, the voltage of the battery core can be acquired through the substrate by utilizing the electric conduction characteristic of the substrate, so that the temperature and the voltage can be acquired simultaneously by utilizing the integrated module, the standardization of the integrated module can be realized, the manufacturing procedures and the material types can be effectively reduced, the effect of a temperature sensing heat conduction path is optimized, the product performance is improved, and the technical problems that the heat conduction path is longer, the heat conduction efficiency is lower, and the abnormal temperature cannot be effectively and rapidly reacted in the prior art are solved.
The standardization of the temperature and voltage acquisition integrated module is embodied as follows: when being applied to the battery module of arbitrary specification, take the temperature voltage collection integrated module of corresponding quantity, the base plate can be connected to on the busbar in the battery module, and temperature collection pad and voltage collection pad can be welded with collection line to carry temperature information and voltage information to battery management system.
Further, the temperature acquisition circuit, the temperature sensor and the voltage acquisition pad are all positioned on the first side surface of the substrate, so that the temperature and voltage acquisition integrated module is convenient to produce.
Further, two temperature acquisition pads are arranged, and the voltage acquisition pads and the two temperature acquisition pads are arranged on the same side of the temperature sensor at intervals so as to facilitate welding between the acquisition lines and each pad.
Further, at least one through hole is formed in the substrate, the through hole is located between the two temperature collection pads and/or between the voltage collection pad and the temperature collection pad, and therefore the through hole is used for spacing the pads.
Further, the through hole is a strip hole, and two ends of the length direction of the through hole are protruded out of two ends of the temperature acquisition pad or two ends of the voltage acquisition pad.
Further, still include the safety cover, the base plate is located to the safety cover, and the safety cover covers temperature sensor, and temperature acquisition pad and voltage acquisition pad all are located the outside of safety cover.
Further, the protective cover is filled with protective glue for wrapping the temperature sensor, and a window for glue injection is arranged on one side, away from the substrate, of the protective cover. So, pour into the protection glue through the window of safety cover in order to wrap up temperature sensor, the safety cover can play the effect of preventing external impact force and fixed protection glue appearance, and the protection glue can play the effect of preventing steam, preventing electrically conductive foreign matter etc. to ensure temperature sensor's normal work.
Further, the temperature sensor is an NTC thermistor.
Based on the same conception, the invention also discloses a battery module which comprises a battery core, a busbar and the temperature and voltage acquisition integrated module, wherein the battery core is connected with the busbar, and a substrate of the temperature and voltage acquisition integrated module is welded with the busbar.
Further, a concave welding position is arranged on the busbar, and the second side surface of the substrate is bonded and welded on the welding position. So, temperature voltage gathers integrated module and is located sunken welding position department to realize the accomodating of temperature voltage and gather integrated module, avoid exposing of temperature voltage to gather integrated module or reduce the exposure height of temperature voltage to gather integrated module, reduce temperature sensor by the risk of impact.
In summary, the temperature and voltage acquisition integrated module provided by the invention has the following technical effects:
1) Standardization can be realized: the substrate can be connected with the bus bars in the battery module in a welding, screwing and other modes, the heat conduction and electric conduction characteristics of the substrate are utilized to realize the transmission of temperature and voltage, the insulating layer is utilized to protect the temperature acquisition circuit and the temperature sensor so as to avoid short circuit, and when the integrated module is applied to the battery module with any specification, the integrated module is utilized to acquire temperature and voltage at the same time, so that the standardization of the integrated module can be realized, and the manufacturing procedures and material types are effectively reduced;
2) The thermal conduction path is short, and the product performance is good: the heat conduction path is a substrate-insulating layer-temperature sensor, and the electric conduction path is a substrate-voltage acquisition pad, wherein the insulating layer is thinner, so that the influence on the heat conduction distance and the efficiency can be basically ignored, the temperature acquisition circuit is utilized to strengthen the temperature acquisition area of the substrate, the heat conduction path is effectively shortened, the heat transfer efficiency is improved, whether abnormal temperature occurs can be effectively and rapidly reflected, and the product performance of the integrated module is improved to a greater extent;
3) The safety is high: through setting up the safety cover and combining the protection glue, prevent the temperature sensor inefficacy that probably leads to under all kinds of circumstances to in battery module, utilize the sunken welding position on the busbar to gather integrated module with installation temperature voltage, reduce temperature sensor by the risk of impact.
Drawings
Fig. 1 is a schematic perspective view of a temperature and voltage acquisition integrated module according to an embodiment of the present invention;
fig. 2 is a schematic front view of a temperature and voltage acquisition integrated module according to an embodiment of the present invention;
FIG. 3 is an exploded view of a temperature and voltage acquisition integrated module according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a connection between a temperature voltage acquisition integrated module and a bus bar according to an embodiment of the present invention.
Wherein the reference numerals have the following meanings:
1. the temperature and voltage acquisition integrated module; 11. a substrate; 111. a through hole; 112. a connection hole; 12. a temperature acquisition circuit; 121. a temperature acquisition bonding pad; 122. a temperature sensing welding leg; 13. an insulating layer; 14. a temperature sensor; 15. a voltage acquisition pad; 16. a protective cover; 161. a window; 162. a connecting pin; 2. a busbar; 21. and welding the position.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 and 2, the invention discloses a temperature and voltage acquisition integrated module 1 for acquiring the temperature and voltage of a battery module, wherein the temperature and voltage acquisition integrated module 1 comprises: a substrate 11, a temperature acquisition line 12, an insulating layer 13, a temperature sensor 14, a voltage acquisition pad 15, and a protective cover 16.
In this embodiment, the substrate 11 is used as a main carrier to carry other components, and the substrate 11 also has heat and electric conduction properties for connecting with the busbar 2 in the battery module, so as to perform the function of transmitting the temperature and voltage of the battery cell. As an example, the substrate 11 may be a metal plate, preferably an aluminum plate or a copper plate. Of course, in other preferred examples, the substrate 11 may be made of a graphene composite material, so as to have heat and electrical conductivity and a certain bearing capacity.
Preferably, the substrate 11 is a rectangular or square aluminum plate, the thickness of the substrate 11 is between 0.2mm and 3mm, the length of one edge of the substrate 11 is between 8mm and 25mm, and the length of the other edge of the substrate 11 is between 6mm and 20 mm. It is further preferred that the thickness of the substrate 11 is between 0.5mm and 1mm, that one edge of the substrate 11 is between 10mm and 16mm in length, and that the other edge of the substrate 11 is between 8mm and 12mm in length.
Of course, the substrate 11 may be rhombic, pentagonal, or hexagonal, and the specific shape of the substrate 11 is not limited in the present invention.
In this embodiment, the temperature collecting circuit 12 is attached to the substrate 11, the temperature sensor 14 is welded to the temperature collecting circuit 12, so that the temperature collecting circuit 12 is utilized to fix the temperature sensor 14 on the substrate 11 relatively, and the temperature collecting circuit 12 and the substrate 11 are insulated and isolated by the insulating layer 13, so that the temperature collecting circuit 12 is prevented from being conducted with the substrate 11, and further, a temperature sensing short circuit caused by the conduction between the temperature sensor 14 and the substrate 11 is avoided, thereby playing a role of insulation protection, the temperature collecting circuit 12 is provided with the temperature collecting pad 121, and the temperature collecting pad 121 can be used for being welded with the collecting circuit to convey temperature information to the battery management system.
Referring to fig. 3, specifically, the temperature collecting circuit 12 includes two sub-circuits respectively used for corresponding to two ends of the temperature sensor 14, the two sub-circuits are arranged at intervals, each sub-circuit includes a temperature collecting pad 121 and a temperature sensing soldering leg 122 which are communicated, and two ends of the temperature sensor 14 are respectively soldered to the two temperature sensing soldering legs 122.
As an example, the insulating layer 13 may be coated on the surface of the substrate 11, or the insulating layer may be adhered on the surface of the substrate 11; the temperature pickup line 12 may be made of copper foil or aluminum foil or nickel foil or tin foil or lead foil, etc., preferably copper foil, and the temperature pickup line 12 may be adhered to a surface of the insulating layer 13 remote from the substrate 11. In other examples, the temperature acquisition circuit 12 may also be made of other metal foils or metal sheets, and the temperature acquisition circuit 12 may also be partially fused in the insulating layer 13.
Preferably, the thickness of the insulating layer 13 is between 0.01mm and 1mm, the insulating layer 13 can entirely cover one surface of the substrate 11, and the insulating layer 13 can also partially cover one surface of the substrate 11, so as to meet the insulation and isolation of the temperature acquisition circuit 12 and the temperature sensor 14; the thickness of the temperature acquisition circuit 12 is between 0.01mm and 1 mm.
Preferably, the temperature sensor 14 is an NTC thermistor, so as to be able to sensitively detect a small temperature difference, and when the temperature transmitted to the NTC thermistor changes, the resistance value of the NTC thermistor also changes, and further, the temperature change condition can be determined by using the change of the resistance value of the NTC thermistor. Of course, the temperature sensor 14 may be a PTC thermistor, or other thermistor.
In this embodiment, the voltage collecting pad 15 is disposed on the substrate 11, and the voltage collecting pad 15 is electrically connected to the substrate 11, and the voltage collecting pad 15 can be also used for soldering with a collecting wire to transmit voltage information to the battery management system. As an example, the voltage collecting pad 15 may be attached to the substrate 11, and electrical conduction between the voltage collecting pad 15 and the substrate 11 is achieved by using a special process, for example, the voltage collecting pad 15 may be made of a metal foil or a metal sheet (such as copper or nickel or tin or aluminum or lead) and attached to and welded to the substrate 11, or may be formed by applying a molten metal (such as copper or nickel or tin or aluminum or lead) to the substrate 11 and solidifying the molten metal to form the voltage collecting pad 15. As another example, the voltage pickup pad 15 may also be a solder joint belonging to the substrate 11 itself exposed. The specific connection or molding manner of the voltage acquisition pad 15 on the substrate 11 is not limited in the present invention.
It will be appreciated that, in order to avoid the influence of the insulating layer 13 on the conductive performance of the voltage acquisition pad 15, the insulating layer 13 is formed with a clearance hole at a position corresponding to the voltage acquisition pad 15, the clearance hole being adapted to the shape and size of the voltage acquisition pad 15.
In the temperature and voltage acquisition integrated module 1 in the above scheme, the insulating layer 13 plays an insulating protection role between the temperature acquisition circuit 12 and the substrate 11, the temperature sensor 14 is welded on the temperature acquisition circuit 12, the temperature information is acquired through the temperature sensor 14, the voltage information is acquired through the substrate 11, and the temperature information and the voltage information can be output through the temperature acquisition pad 121 and the voltage acquisition pad 15, so that the temperature and the voltage can be acquired simultaneously by using the integrated module, the standardization of the integrated module can be realized, and the manufacturing procedures and the material types can be effectively reduced; meanwhile, in the temperature and voltage acquisition integrated module 1, the heat conduction path is a substrate 11, an insulating layer 13 and a temperature sensor 14, and the electric conduction path is a substrate 11, a voltage acquisition pad 15, wherein the insulating layer 13 is thinner, the influence on the heat conduction distance and the efficiency can be basically ignored, the temperature acquisition circuit 12 is utilized to strengthen the temperature acquisition area of the substrate 11, the heat conduction path is effectively shortened, the heat transfer efficiency is improved, whether abnormal temperature occurs can be effectively and rapidly reflected, and the product performance of the integrated module is greatly improved.
Referring to fig. 1, in the present embodiment, a protection cover 16 is disposed on a substrate 11, and the protection cover 16 covers a temperature sensor 14, and a temperature acquisition pad 121 and a voltage acquisition pad 15 are both located outside the protection cover 16. Preferably, the protective cover 16 is filled with protective glue (not shown in the figure) for wrapping the temperature sensor 14, and a window 161 for injecting glue is arranged on the side of the protective cover 16 away from the substrate 11. The protective cover 16 can function as follows: preventing the external impulse force from directly acting on the temperature sensor 14 to cause failure; is used for fixing the appearance of the protective adhesive. The protective adhesive can play the following roles: preventing conductive foreign matter from falling into the protective cover 16 and conducting the temperature sensing leg 122, resulting in failure of the temperature sensor 14; preventing moisture from invading the inside of the temperature sensor 14 to cause failure; and the temperature sensor 14 is prevented from being invalid due to the fact that the protective cover 16 is stressed, deformed and invaded by impact force received by the protective cover 16 can be absorbed.
Referring to fig. 3, in order to facilitate the installation of the protection cover 16 on the substrate 11, as an example, the two ends of the protection cover 16 in the length direction are respectively provided with a connection pin 162, and the substrate 11 is provided with a connection hole 112 corresponding to the connection pin 162, and during the installation, the connection pin 162 is inserted into the connection hole 112, and the connection pin 162 can be bent by snapping to fasten the connection hole 112, thereby completing the installation of the protection cover 16 on the substrate 11. Of course, in other examples, the protection cover 16 may be mounted on the substrate 11 in other manners, and the mounting manner of the protection cover 16 is not specifically limited in the present invention.
Preferably, the protective cover 16 may be made of a metal material to ensure sufficient connection strength and impact resistance. Of course, the protection cover 16 may be made of other materials such as plastic.
Preferably, the substrate 11 has a first side and a second side opposite to each other, and the temperature collecting circuit 12, the insulating layer 13, the temperature sensor 14, the voltage collecting pad 15 and the protective cover 16 are all located on the first side of the substrate 11, so as to facilitate the production of the temperature-voltage collecting integrated module 1.
Referring to fig. 2, in the present embodiment, the voltage pickup pad 15 and the two temperature pickup pads 121 are arranged at the same side of the temperature sensor 14 with a space therebetween. Referring to the direction shown in fig. 2, specifically, the voltage collecting pad 15 and the two temperature collecting pads 121 are located at the left sides of the temperature sensor 14 and the protection cover 16, and the voltage collecting pad 15 and the two temperature collecting pads 121 are sequentially arranged from top to bottom.
Preferably, the interval between the voltage acquisition pad 15 and the temperature acquisition pad 121 and the interval between the two temperature acquisition pads 121 are both greater than 0.3mm, more preferably, the interval is both greater than 0.5mm; the voltage pickup pad 15 and the temperature pickup pad 121 are each rectangular in shape, and have a length of between 2mm and 5mm, a width of between 0.8mm and 2mm, more preferably, a length of between 3mm and 4mm, and a width of between 1mm and 1.5 mm.
Referring to fig. 2 and 3, in this embodiment, more importantly, two through holes 111 are formed on the substrate 11, wherein one through hole 111 is located between two temperature collection pads 121, and the other through hole 111 is located between the voltage collection pad 15 and the temperature collection pad 121, so that the through holes 111 are used to space the pads, thereby avoiding conduction between the welding marks during welding the collection lines, and facilitating cleaning of the exposed welding marks.
Of course, the specific number of vias 111 may vary as desired, e.g., there may be only one via 111 located between two temperature capture pads 121 or between voltage capture pad 15 and temperature capture pad 121.
In particular, the through hole 111 is a long hole, and both ends of the through hole 111 in the length direction protrude from both ends of the temperature collection pad 121 or both ends of the voltage collection pad 15, so that the pads are spaced apart better.
Referring to fig. 4, based on the same concept, in this embodiment, the invention also discloses a battery module, which includes a temperature and voltage acquisition integrated module 1, a busbar 2, and a battery cell (not shown in the figure), wherein the battery cell is connected with the busbar 2, and a substrate 11 of the temperature and voltage acquisition integrated module 1 is welded with the busbar 2.
In summary, when the temperature and voltage collection integrated module 1 is applied to a battery module of any specification, a corresponding number of temperature and voltage collection integrated modules 1 are used, so that the substrate 11 of the temperature and voltage collection integrated modules 1 is welded to the busbar 2 in the battery module, and the temperature collection pads 121 and the voltage collection pads 15 can be welded with collection wires to convey temperature information and voltage information to the battery management system.
It can be appreciated that the collection line may be a wire harness or an FPC connector to carry information outwards.
Specifically, busbar 2 is used for establishing ties two adjacent electric core mutually, is equipped with sunken welding position 21 on the busbar 2, and the laminating of substrate 11's second side welds on welding position 21, so, temperature voltage gathers integrated module 1 and is located sunken welding position 21 department to realize temperature voltage and gather integrated module 1's accomodating, avoid exposing of temperature voltage to gather integrated module 1 or reduce temperature voltage and gather integrated module 1's exposure height, reduce the risk that temperature sensor 14 was impacted.
Of course, in other embodiments, an edge of the substrate 11 may be welded to an edge of the busbar 2.
In summary, referring to fig. 3, the temperature and voltage acquisition integrated module 1 of the present invention may be produced as follows:
cutting a substrate 11 with a corresponding shape and holes according to design requirements;
soldering the voltage pickup pads to the substrate 11 at the corresponding positions;
coating an insulating layer 13 on a set area of the first side surface of the substrate 11, adhering a temperature acquisition circuit 12 to the insulating layer 13 in a semi-dry or full-dry state of the insulating layer 13, and positioning the temperature acquisition circuit 12 at a corresponding position of the substrate 11;
after the temperature acquisition circuit 12 is fixed, the temperature sensor 14 is welded to the temperature sensing welding feet 122 of the temperature acquisition circuit 12;
aligning the connection pins 162 of the protection cover 16 to the connection holes 112, and mounting the protection cover 16 on the substrate 11 by matching the connection pins 162 with the connection holes 112;
and injecting protective glue through a window 161 of the protective cover 16 to complete the whole production of the temperature and voltage acquisition integrated module 1.
In summary, referring to fig. 1 and 4, the temperature and voltage acquisition integrated module 1 and the battery module according to the present invention may have the following working processes:
the heat of the battery cell can be transferred to the busbar 2 and transferred to the substrate 11 through the joint surface of the busbar 2 and the substrate 11, the heat of the substrate 11 is radiated to the temperature acquisition line 12 and the temperature sensor 14 through the insulating layer 13, the resistance value of the temperature sensor 14 changes after being heated, thus completing the temperature acquisition of the battery cell, and a temperature signal is transmitted to a battery management system through the temperature acquisition pad 121-acquisition line;
the voltage of the battery cell can be conducted to the busbar 2-substrate 11, so that the voltage acquisition of the battery cell is completed, and a voltage signal is transmitted to a battery management system through the voltage acquisition pad 15-acquisition line.
In summary, the temperature and voltage acquisition integrated module 1 of the present invention has the following effects:
1) Standardization can be realized: the insulating layer 13 is arranged between the temperature acquisition circuit 12 and the substrate 11 to play an insulating protection role, the temperature sensor 14 is welded on the temperature acquisition circuit 12, temperature information is acquired through the temperature sensor 14, voltage information is acquired through the substrate 11, and the temperature information and the voltage information can be output through the temperature acquisition pad 121 and the voltage acquisition pad 15, so that the temperature and the voltage can be acquired simultaneously by utilizing the integrated module, the standardization of the integrated module can be realized, and the manufacturing procedures and the material types can be effectively reduced;
2) The thermal conduction path is short, and the product performance is good: the heat conduction path is a substrate 11-insulating layer 13-temperature sensor 14, and the electric conduction path is a substrate 11-voltage acquisition pad 15, wherein the insulating layer 13 is thinner, the influence on the heat conduction distance and the efficiency can be basically ignored, the temperature acquisition circuit 12 is utilized to strengthen the temperature acquisition area of the substrate 11, the heat conduction path is effectively shortened, the heat transfer efficiency is improved, whether abnormal temperature occurs can be effectively and rapidly reflected, and the product performance of the integrated module is improved to a greater extent;
3) The safety is high: through setting up safety cover 16 and combining the protection glue, prevent the temperature sensor 14 that can lead to under various circumstances to become invalid to in battery module, utilize the sunken welding position 21 on busbar 2 to gather integrated module 1 with the installation temperature voltage, reduce the risk that temperature sensor 14 was impacted.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The utility model provides a temperature voltage gathers integrated module for gather battery module's temperature and voltage, its characterized in that includes:
a substrate (11) having heat and electric conductivity for connecting with the bus bar (2) in the battery module;
a temperature acquisition line (12) attached to the substrate (11), and insulated from the substrate (11) by an insulating layer (13), the temperature acquisition line (12) having a temperature acquisition pad (121);
a temperature sensor (14) welded to the temperature acquisition circuit (12);
and the voltage acquisition pad (15) is arranged on the substrate (11), and the voltage acquisition pad (15) is electrically connected with the substrate (11).
2. The temperature-voltage acquisition integrated module according to claim 1, characterized in that the temperature acquisition line (12), the temperature sensor (14) and the voltage acquisition pad (15) are all located on a first side of the substrate (11).
3. The temperature and voltage acquisition integrated module according to claim 2, characterized in that two temperature acquisition pads (121) are provided, and the voltage acquisition pad (15) and the two temperature acquisition pads (121) are arranged at the same side of the temperature sensor (14) at intervals.
4. A temperature and voltage acquisition integrated module according to claim 3, characterized in that the substrate (11) is provided with at least one through hole (111), which through hole (111) is located between two temperature acquisition pads (121) and/or between the voltage acquisition pad (15) and the temperature acquisition pad (121).
5. The temperature-voltage collection integrated module according to claim 4, wherein the through hole (111) is a long hole, and both ends of the through hole (111) in the length direction protrude from both ends of the temperature collection pad (121) or both ends of the voltage collection pad (15).
6. The temperature and voltage acquisition integrated module according to claim 1, further comprising a protective cover (16), wherein the protective cover (16) is provided on the substrate (11), and the protective cover (16) covers the temperature sensor (14), and the temperature acquisition pad (121) and the voltage acquisition pad (15) are both located outside the protective cover (16).
7. The temperature and voltage acquisition integrated module according to claim 6, wherein the protective cover (16) is filled with protective glue wrapping the temperature sensor (14), and a window (161) for glue injection is arranged on one side of the protective cover (16) away from the substrate (11).
8. The temperature-voltage acquisition integrated module according to claim 1, characterized in that the temperature sensor (14) is an NTC thermistor.
9. A battery module, characterized by comprising a battery cell, a busbar (2) and the temperature and voltage acquisition integrated module according to any one of claims 1 to 8, wherein the battery cell is connected with the busbar (2), and a substrate (11) of the temperature and voltage acquisition integrated module is welded with the busbar (2).
10. The battery module according to claim 9, wherein the busbar (2) is provided with a recessed welding site (21), and the second side of the substrate (11) is bonded and welded to the welding site (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352151.2A CN116344986A (en) | 2023-04-03 | 2023-04-03 | Temperature and voltage acquisition integrated module and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352151.2A CN116344986A (en) | 2023-04-03 | 2023-04-03 | Temperature and voltage acquisition integrated module and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116344986A true CN116344986A (en) | 2023-06-27 |
Family
ID=86889276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310352151.2A Pending CN116344986A (en) | 2023-04-03 | 2023-04-03 | Temperature and voltage acquisition integrated module and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116344986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117013210A (en) * | 2023-10-07 | 2023-11-07 | 江苏华友能源科技有限公司 | Temperature sensing and inductance integrated busbar and battery pack internal temperature acquisition method |
-
2023
- 2023-04-03 CN CN202310352151.2A patent/CN116344986A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117013210A (en) * | 2023-10-07 | 2023-11-07 | 江苏华友能源科技有限公司 | Temperature sensing and inductance integrated busbar and battery pack internal temperature acquisition method |
| CN117013210B (en) * | 2023-10-07 | 2023-12-08 | 江苏华友能源科技有限公司 | Temperature sensing and inductance integrated busbar and battery pack internal temperature acquisition method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102237505B (en) | Interconnect device for battery assembly | |
| CN106004512B (en) | Signal acquisition component, power battery module, automobile | |
| CN210628444U (en) | Battery module, battery pack, and vehicle | |
| CN208128637U (en) | FPC sampling component and battery modules | |
| CN106031313B (en) | The manufacturing method of electronic control module and electronic control module | |
| CN116344986A (en) | Temperature and voltage acquisition integrated module and battery module | |
| EP3063824B1 (en) | Signal collection assembly and power battery module comprising the same | |
| CN219739040U (en) | Temperature and voltage acquisition integrated module and battery module | |
| CN211879491U (en) | Battery management electricity is connected module spare and battery management electricity with coupling assembling | |
| CN111435723B (en) | Battery connection module | |
| CN218456127U (en) | Battery module | |
| CN214505584U (en) | Battery pack temperature acquisition module and system | |
| CN217396257U (en) | CCS assembly and battery module | |
| CN107179099B (en) | Sensor structure and manufacturing method thereof | |
| CN216488417U (en) | FFC and plastic sucking disc integrated CCS's collection structure and battery module | |
| CN206040627U (en) | Intelligent power module | |
| CN220422102U (en) | Flexible circuit board and power battery pack for new energy vehicle | |
| CN212542537U (en) | Voltage and temperature acquisition system of power battery system | |
| CN110112477B (en) | Battery cell connection system | |
| CN113418624A (en) | Flexible temperature sensor and battery pack | |
| CN112599937A (en) | Battery collection method and battery collection system | |
| CN210136929U (en) | Battery module | |
| CN211090150U (en) | Circuit board structure and lithium ion battery structure comprising same | |
| CN219935147U (en) | Hard plate temperature detection device and battery module collection integrated busbar | |
| CN219935146U (en) | Soft row temperature detection device and CCS integrated busbar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |