SE545987C2 - A busbar protector, a busbar protector assembly, a battery system and a vehicle - Google Patents

A busbar protector, a busbar protector assembly, a battery system and a vehicle

Info

Publication number
SE545987C2
SE545987C2 SE2150923A SE2150923A SE545987C2 SE 545987 C2 SE545987 C2 SE 545987C2 SE 2150923 A SE2150923 A SE 2150923A SE 2150923 A SE2150923 A SE 2150923A SE 545987 C2 SE545987 C2 SE 545987C2
Authority
SE
Sweden
Prior art keywords
busbar
protector
power line
opening
busbar protector
Prior art date
Application number
SE2150923A
Other languages
Swedish (sv)
Other versions
SE2150923A1 (en
Inventor
Adam Andersson
Richard Jonsson
Original Assignee
Scania Cv Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE2150923A priority Critical patent/SE545987C2/en
Priority to DE102022113538.1A priority patent/DE102022113538A1/en
Publication of SE2150923A1 publication Critical patent/SE2150923A1/en
Publication of SE545987C2 publication Critical patent/SE545987C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • 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
    • 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
    • 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
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/591—Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/36—Vehicles designed to transport cargo, e.g. trucks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/14—Supporting insulators
    • H01B17/16—Fastening of insulators to support, to conductor, or to adjoining insulator
    • 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
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

A busbar protector (1) is disclosed. The busbar protector (1) is configured to cover at least a part of a busbar (3) to achieve a touch protection of the busbar (3). The busbar (3) comprises a first portion (5) configured to be electrically connectable to a battery module (7) and a second portion (9) configured to be electrically connectable to a power line (11). The busbar protector (1) comprises a through opening (13) configured to receive a connection portion (15) of the power line (11) and an attachment means (17) to attach the power line (11) to the second portion (9) of the busbar (3) to achieve the electrical connection between the second portion (9) of the busbar (3) and the power line (11). The present disclosure further relates to a busbar protector assembly (25), to a battery system (29) and to a vehicle (31).

Description

A busbar protector, a busbar protector assembly, a battery system and a vehicle TECHNICAL FIELD The present disclosure relates to the area of batteries for electric vehicles. Particularly, the present disclosure relates to a busbar protector for a battery and to busbar protector assembly, a battery system and a vehicle comprising a battery system.
BACKGROUND Electric vehicles are expected to increase in demand in the coming years and thereby to change the modern transportation system. Progress within technologies related to batteries has recently had an important impact on the development of electric trucks, busses and other heavy duty vehicles.
Development of the technologies related to electric vehicles is followed by laws regulating the requirements regarding, inter alia, handling and protection of electrically leading parts of an electric vehicle.
High voltage terminals/busbars for batteries need touch protection for safe handling of the terminals/busbars.
Efforts have been made to develop busbar protectors providing good insulation. However, it has been challenging to provide busbar protectors providing good insulation and at the same time providing sufficient contact area between the leading parts in order to reduce resistance.
Thus, there is a need of an improved busbar protector providing good electrical insulation and touch protection and at the same time providing sufficient contact area for the electrically leading parts. Further, there is a need of an improved busbar protector enabling safe and robust attachment of the electricity leading parts.
SUMMARY lt is an object of the present disclosure to overcome, or at least alleviate, at least some of the above-mentioned drawbacks and problems.
According to a first aspect of the disclosure, the object is achieved by a busbar protector according to the independent claim. Thus, the object is achieved by a busbar protector configured to cover at least a part of a busbar to achieve a touch protection of the busbar.The busbar comprises a first portion configured to be electrically connectable to a battery module and a second portion configured to be electrically connectable to a power line. The busbar protector comprises a through opening configured to receive a connection portion of the power line and to receive an attachment means to attach the connection portion of the power line to the second portion of the busbar to achieve said electrical connection between the second portion of the busbar and the power line.
The touch protection can be verified by a standard finger defined according to ISO Thus the busbar protector is designed to provide a touch protection for such a finger.
Since the busbar protector is configured to cover at least a part of the busbar, an insulation and a touch protection of the at least part of the busbar can be achieved by the busbar protector. Further, since the busbar protector comprises the through opening configured to receive the connection portion of the power line and to receive the attachment means, the power line can be electrically connected to the busbar through the through opening and can be attached to the busbar by means of the attachment means that can be inserted through the through opening.
Thus, the busbar protector provides a good insulation and touch protection of the at least part of the busbar and at the same time provides a contact area between the busbar and the power line for electrical connection between the busbar and the power line. Further, the busbar protector enables attachment of the power line to the busbar by means of the attachment means that can be received by the through opening.
As a result, an improved busbar protector is provided and thereby the above-mentioned object is achieved.
Optionally, the through opening has a form of a grid and comprises: - a first through opening configured to receive the connection portion of the power line and - a second through opening configured to receive the attachment means.
Thus, the connection portion can be connected to the busbar through the first through opening and can be attached to the busbar by means of the attachment means received by the second through opening separated from the first through opening. Thus, a yet improved busbar protector is provided having conditions for a yet improved touch protection because the attachment means can be protected by a grid structure around the second through opening separated from the first through opening.Optionally, the first through opening comprises a number of sub-openings. Thus, the through opening may comprise one or several sub-openings. The number of sub-openings, comparing to one single opening, may improve the touch protection Characteristics of the busbar protector because instead of one single opening the through opening may comprises a number of smaller sub-openings with a grid structure around each sub-opening which may contribute to an improved touch protection.
Optionally, at least one sub-opening of the number of sub-openings has a form of a square.
Optionally, the attachment means comprises a screw. Thus, a safe and robust attachment of the connection portion of the power line to the busbar can be achieved.
Optionally, the busbar protector is made of a material with dielectric strength of at least 18 kV/mm.
Optionally, the busbar protector comprises an attachment portion configured to attach the busbar protector to the busbar by a snap-fit connection principle. Thus, the busbar protector can be attached to the busbar and can be removed from the busbar in a simple and time efficient manner.
Further object of the present disclosure is to provide an improved busbar protector assembly. The object is achieved by a busbar protector assembly according to the independent claim. Thus, the object is achieved by busbar protector assembly comprising a busbar protector according to any of the embodiments described herein, and a power line protector configured to cover at least a part of a portion, for example a connection portion, of a power line to achieve a touch protection of the portion of the power line. The busbar protector and the power line protector are configured to enable a connection between the busbar protector and the power line protector.
The touch protection can be verified by a standard finger defined according to ISO 20653. Thus the busbar protector and the power line protector are designed to provide a touch protection for such a finger.
Since the busbar protector assembly comprises an improved busbar protector, an improved busbar protector assembly is provided. Further, since the power line protector is configured to cover at least a part of a portion of a power line, the part of the portion of the power line can be protected by the power line protector. Yet further, since the busbar protector and thepower line protector are configured to enable a connection between the busbar protector and the power line protector, the busbar protector and the power line protector can be connected to each other enclosing at least partly the part of the busbar and at least the part of the portion of the power line and thereby providing an electrical insulation and touch protection of the connection area of the power line and the busbar.
As a result, an improved busbar protector assembly is provided, providing an improved touch protection of a connection between the busbar and the power line. Thereby the above- mentioned object is achieved.
Optionally, the busbar protector and/or the power line protector is configured to achieve an overlap between the busbar protector and the power line protector after the busbar protector and the power line protector have been connected to each other. The overlap provides a yet improved touch protection. Thereby a yet improved busbar protector assembly is provided.
Optionally, the power line protector is made of a material with dielectric strength of at least 18 kV/mm.
Optionally, the connection between the busbar protector and the power line protector is a snap-fit connection. Thus, the busbar protector and the power line protector can be connected to each other and can be removed from each other in a simple and time efficient mannef.
Yet further object of the present disclosure is to provide an improved battery system. The object is achieved by a battery system according to the independent claim. Thus, the object is achieved by a battery system comprising at least one battery module and a busbar, and: - a busbar protector according to any of the embodiments described herein or - a busbar protector assembly according to any of the embodiments described herein.
Because the battery system comprises an improved busbar protector or an improved busbar protector assembly an improved battery system is provided and thereby the object is achieved.
Yet further object is to provide an improved vehicle. The object is achieved by a vehicle according to the independent claim. Thus, the object is achieved by a vehicle comprising a battery system according to any of the embodiments described herein. Because the vehiclecomprises an improved battery system, an improved vehicle is provided and thereby the object is achieved. Further features of, and advantages with, the present invention will become apparent when studying the appended claims and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS Various aspects of the invention, including its particular features and advantages, will be readily understood from the example embodiments discussed in the following detailed description and the accompanying drawings, in which: Fig. 1a and Fig. 1b illustrate a perspective view of a busbar protector attached to a busbar, Fig. 2a illustrates a perspective view of the busbar protector and the busbar illustrated in Fig. 1a and Fig. 1b and a portion of a power line intended to be connected to the busbar through an opening in the busbar protector, Fig. 2b illustrates a perspective view of a busbar protector assembly before being assembled, Fig. 3 illustrates a perspective view of a battery system and Fig. 4 illustrates a vehicle comprising a battery system illustrated schematically.
DETAILED DESCRIPTION Aspects of the present invention will now be described more fully. Like numbers refer to like elements throughout. Well-known functions or constructions will not necessarily be described in detail for brevity and/or clarity.
Fig. 1a and Fig 1b illustrate a busbar protector 1 configured to cover at least a part of a busbar 3 to achieve a touch protection of the busbar 3. The busbar 3 comprises a first portion 5 configured to be electrically connectable to a battery module 7. The battery module 7 is illustrated in Fig. 3. The first portion 5 may be connected to the battery module 7 by, for example, welding. Further, the busbar 3 comprises a second portion 9 configured to be electrically connectable to a power line 11. The power line 11 is illustrated in Fig. 2a - Fig. 3. ln Fig. 1a, the second portion 9 of the busbar 3 is illustrated with a dashed line to show the structure ofthe busbar protector 1 from the behind and inside.
According to the embodiments illustrated in the figures, the first portion 5 and the second portion 9 of the busbar 3 are arranged perpendicular in relation to each other. However, the first portion 5 may be angled in relation to the second portion 9 with other angles thandegrees.The busbar protector 1 comprises a through opening 13 configured to receive a connection portion 15 of the power line 11 and to receive an attachment means 17 to attach the connection portion 15 to the second portion 9 of the busbar 3 in order to achieve the electrical connection bet\Neen the second portion 9 of the busbar 3 and the power line 11. The connection portion 15 of the power line 11 and the attachment means 17 are illustrated in Fig 2. The attachment means 17 may comprise a screw, optionally with a nut, or may comprise other suitable means for attachment of the connection portion 15 to the second portion 9. For example, the attachment means may comprise a rivet. Thus, the connection portion 15 of the power line 11 can be attached to the second portion 9 of the busbar 3 in a safe and robust manner.
According to some embodiments illustrated in details in Fig. 1a and Fig. 1b, the through opening 13 has a form of a grid and comprises: - a first through opening 19 configured to receive the connection portion 15 of the power line 11 and - a second through opening 21 configured to receive the attachment means Further, according to the embodiments illustrated in Fig. 1a and 1b, and also illustrated in Fig. 2a and 2b, the first through opening 19 comprises two sub-openings 19' having a form of a square. The through opening 19 may comprise a number of sub-openings 19'. Thus, the through opening 19 may comprise one or several sub-openings 19'.
The busbar protector 1 can be made of a material with dielectric strength of at least 18 kV/mm, preferably the busbar protector 1 can be made of a material with dielectric strength of around 20 kV/mm.
The busbar protector 1 comprises an attachment portion 23 configured to attach the busbar protector 1 the busbar 3 by a snap-fit connection principle.
Fig. 2a illustrates a perspective view of the busbar protector 1 and the busbar 3 illustrated in Fig. 1a and Fig. 1b and a connection portion 15 of a power line 11 intended to be connected to the busbar 3 through the openings of the busbar protector 1. As illustrated in Fig. 2a the connection portion 15 may comprise a sub-connection portions 15' protruding from a head portion with ends separated from each other. Preferably, the form of the sub-connection portions 15' corresponds to the form of the sub-openings 19' of the busbar protector 1 in order facilitate the connection of the connection portion 15 to the busbar 3 and in order to maximize the contact area between the connection portion 15 and the busbar According to the embodiments illustrated in the figures, the busbar protector 1 can have a height h measured from an insertion portion 6 of the busbar protector 1. The insertion portion 6 is arranged to receive the second portion 9 of the busbar 3. Thus, the through opening 13, i.e. the first through opening 19 and the second through opening 21 have the height h, which means that the connection portion 15 of the power line 11 and the attachment means 17 can be insu|ated and protected when the connection portion 15 has been connected to the busbar 3 and attached by means of the attachment means Fig. 2b i||ustrates a perspective view of a busbar protector assembly 25 before assembling. The busbar protector assembly 25 comprising a busbar protector 1, and a power line protector 27 configured to cover at least a part of a portion of a power line 11 to achieve a touch protection of the portion of the power line 11. The busbar protector 1 and the power line protector 27 are configured to enable a connection between the busbar protector 1 and the power line protector 27. Preferably, the connection between the busbar protector 1 and the power line protector 27 is a snap-fit connection.
According to some embodiments the busbar protector 1 and/or the power line protector 27 is configured to achieve an overlap between the busbar protector 1 and the power line protector 27 after the busbar protector 1 and the power line protector 27 have been connected to each other. Thus, in the perspective of Fig. 2b, a lower portion 4 of the power line protector 27 may overlap an upper portion 2 of the busbar protector The power line protector 27 can be made of a material with dielectric strength of at least 18 kV/mm, preferably the power line protector 27 can be made of a material with dielectric strength of around 20 kV/mm.
Fig. 3 i||ustrates a perspective view of a battery system 29. According to the embodiments illustrated in Fig. 3. The battery system 29 comprises a battery module 7 and a busbar protector assembly 25 illustrated in fig. 2b being assembled.
Fig. 4 i||ustrates a vehicle 31 comprising a battery system 29 illustrated schematically.

Claims (1)

  1. Claims A busbar protector (1) configured to cover at least a part of a busbar (3) to achieve a touch protection of the busbar (3), wherein the busbar (3) comprises a first portion (5) configured to be electrically connectable to a battery module (7) and a second portion (9) configured to be electrically connectable to a power line (11), wherein the busbar protector (1) comprises a through opening (13) configured to receive a connection portion (15) of the power line (11) and an attachment means (17) to attach the connection portion (15) of the power line (11) to the second portion (9) of the busbar (3) to achieve said electrical connection between the second portion (9) of the busbar (3) and the power line (11). The busbar protector (1) according to claim 1, wherein the through opening (13) has a form of a grid and comprises: - a first through opening (19) configured to receive the connection portion (15) of the power line (11) and - a second through opening (21) configured to receive said attachment means (17). The busbar protector (1) according to claim 2, wherein the first through opening (19) comprises a number of sub-openings (19'). The busbar protector (1) according to claim 3, wherein at least one sub-opening (19') of the number of sub-openings (19') has a form of a square. The busbar protector (1) according to any of claims 1 to 4, wherein the attachment means (17) comprises a screw. The busbar protector (1) according to any of claims 1 to 5, wherein the busbar protector (1) is made of a material with dielectric strength of at least 18 kV/mm. The busbar protector (1) according to any of claims 1 to 6, comprising an attachment portion (23) configured to attach the busbar protector (1) to the busbar (3) by a snap- fit connection principle. A busbar protector assembly (25) comprising a busbar protector (1) according to any of claims 1 to 7, and a power line protector (27) configured to cover at least a part of a portion of a power line (11) to achieve a touch protection of the portion of the power line (11), wherein the busbar protector (1) and the power line protector (27) areconfigured to enable a connection between the busbar protector (1) and the power line protector (27). The busbar protector assembly (25) according to claim 8, wherein the busbar protector (1) and/or the power line protector (27) is configured to achieve an overlap between the busbar protector (1) and the power line protector (27) after the busbar protector (1) and the power line protector (27) have been connected to each other. The busbar protector assembly (25) according to claim 8 or 9, wherein the power line protector (27) is made of a material with dielectric strength of at least 18 kV/mm. The busbar protector assembly (25) according to any of claims 8 to 10, wherein the connection between the busbar protector (1) and the power line protector (27) is a snap-fit connection. A battery system (29) comprising at least one battery module (7) and a busbar (3), and: - a busbar protector (1) according to any of claims 1 to 7 or - a busbar protector assembly (25) according to any of claims 8 to A vehicle (31) comprising a battery system (29) according to claim 12.
SE2150923A 2021-07-09 2021-07-09 A busbar protector, a busbar protector assembly, a battery system and a vehicle SE545987C2 (en)

Priority Applications (2)

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SE2150923A SE545987C2 (en) 2021-07-09 2021-07-09 A busbar protector, a busbar protector assembly, a battery system and a vehicle
DE102022113538.1A DE102022113538A1 (en) 2021-07-09 2022-05-30 Busbar protection, busbar protection arrangement, battery system and vehicle

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SE2150923A SE545987C2 (en) 2021-07-09 2021-07-09 A busbar protector, a busbar protector assembly, a battery system and a vehicle

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023112886A1 (en) 2023-05-16 2024-11-21 Audi Aktiengesellschaft Module connector for electrical connection to a module terminal connection of a battery module, module terminal connection and connection arrangement
DE102023112888A1 (en) 2023-05-16 2024-11-21 Audi Aktiengesellschaft Housing for a module terminal connection for providing contact protection, module terminal connection, connection arrangement and battery module for a motor vehicle
DE102023112889A1 (en) 2023-05-16 2024-11-21 Audi Aktiengesellschaft Module connector for electrical connection to a module terminal connection of a battery module, module terminal connection and connection arrangement

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US20180366790A1 (en) * 2017-06-20 2018-12-20 Yazaki Corporation Wire connection bus bar and conductive module
US20190198847A1 (en) * 2016-07-22 2019-06-27 Autonetworks Technologies, Ltd. Wiring module
US20190222003A1 (en) * 2018-01-16 2019-07-18 Autonetworks Technologies, Ltd. Connection structure for external connection bus bar and connection method for external connection bus bar
US20190305282A1 (en) * 2016-07-21 2019-10-03 Samsung Sdi Co., Ltd. Battery module

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US20190305282A1 (en) * 2016-07-21 2019-10-03 Samsung Sdi Co., Ltd. Battery module
US20190198847A1 (en) * 2016-07-22 2019-06-27 Autonetworks Technologies, Ltd. Wiring module
US20180366790A1 (en) * 2017-06-20 2018-12-20 Yazaki Corporation Wire connection bus bar and conductive module
US20190222003A1 (en) * 2018-01-16 2019-07-18 Autonetworks Technologies, Ltd. Connection structure for external connection bus bar and connection method for external connection bus bar

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SE2150923A1 (en) 2023-01-10

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