WO2021217969A1 - 电池模块及具有其的电池模组和汽车 - Google Patents

电池模块及具有其的电池模组和汽车 Download PDF

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Publication number
WO2021217969A1
WO2021217969A1 PCT/CN2020/110881 CN2020110881W WO2021217969A1 WO 2021217969 A1 WO2021217969 A1 WO 2021217969A1 CN 2020110881 W CN2020110881 W CN 2020110881W WO 2021217969 A1 WO2021217969 A1 WO 2021217969A1
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WO
WIPO (PCT)
Prior art keywords
battery module
electrode tab
side plate
hole
stack
Prior art date
Application number
PCT/CN2020/110881
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English (en)
French (fr)
Inventor
杨重科
冯帅
赵亮
李成亮
翁志福
Original Assignee
昆山宝创新能源科技有限公司
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
Priority claimed from CN202020714577.XU external-priority patent/CN211980747U/zh
Priority claimed from CN202010368374.4A external-priority patent/CN111477830A/zh
Application filed by 昆山宝创新能源科技有限公司 filed Critical 昆山宝创新能源科技有限公司
Publication of WO2021217969A1 publication Critical patent/WO2021217969A1/zh

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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure belongs to the field of batteries, and specifically relates to a battery module, a battery module having the same, and an automobile.
  • an object of the present disclosure is to provide a battery module and a battery module with the same, and a car.
  • the battery module eliminates the need for stacks of parallel connection accessory copper bars, thereby reducing the cost and weight of the module, and improving Space utilization.
  • the present disclosure proposes a battery module.
  • the battery module includes:
  • a plurality of stacked bodies the stacked body includes a plurality of stacked battery cells, and the positive electrode tab ends of the plurality of battery cores form a positive electrode tab area, and the negative electrode tab ends of the plurality of battery cores form a negative electrode In the tab region, the positive tab region of one stack and the negative tab region of the other stack in two adjacent stacked bodies are laminated and welded to form a cascade welding region;
  • the first connection row, the first connection row is provided with a first slot, and the positive electrode tab of the positive electrode tab area of the stack at the end passes through the first slot and is connected to the first Row fit
  • a second connection row, the second connection row is provided with a second slot, and the negative electrode tab of the negative electrode tab area of the stack at the end passes through the second slot and is connected to the second Row fit
  • one of the first connecting row and the second connecting row is provided with a connecting screw at one end away from the stack, and the other of the first connecting row and the second connecting row is provided with a connecting screw.
  • a stack is formed by stacking a plurality of cells, and the positive pole tab end of the cell in the same stack forms a positive pole tab area, and the negative pole of the cell in the same stack
  • the end of the ear forms a negative electrode tab area
  • the positive electrode tab area of one of the two adjacent stacked bodies is welded to the negative electrode tab area of the other stacked body to form a cascade welding area, and at the same time, the connection bar is used to connect at the end.
  • the positive electrode tab of the positive electrode tab area and/or the negative electrode tab of the negative electrode tab area of the stacked body compared with the existing battery module in which two adjacent stacked bodies are connected in series by copper bars, the battery of the present application
  • the module omits the copper bars of the connection accessories connected in series with the stacked body, thereby reducing the cost and weight of the module, and improving the space utilization rate.
  • one end of the first connection row and the second connection row is far away from the stack body. Connecting screws are provided, and the other of the first connecting row and the second connecting row is provided with connecting holes.
  • the battery module according to the above-mentioned embodiments of the present disclosure may also have the following additional technical features:
  • a first structural hole is provided on the positive electrode tab located in the cascade welding area, and a second structural hole is provided on the negative electrode tab located in the cascade welding area ,
  • the positive electrode tab area is provided with a plurality of first through channels formed by the first structure holes
  • the negative electrode tab area is provided with a plurality of second through channels formed by the second structure holes
  • the first through channel and the second through channel pass through to form an auxiliary connection channel
  • an auxiliary connection member is provided in the auxiliary connection channel.
  • the above-mentioned battery module further includes: a first tab protection shell, the first tab protection shell is respectively clamped with the upper end and the lower end of the cascade welding zone, and the first tab A first through hole and a first groove are arranged on the tab protection shell, and a first threaded hole is arranged in the first groove. Therefore, on the one hand, the tab protection area is protected, and on the other hand, it is convenient for the subsequent rapid positioning and assembly of the side plate.
  • the above-mentioned battery module further includes: a second tab protective shell, and the second tab protective shell is connected to the positive pole tab area or the negative pole of the stack at the end.
  • the tab area is clamped, and the second tab protection shell is provided with a second through hole and a second groove, and a second threaded hole is provided in the second groove. Therefore, on the one hand, the positive electrode tab area is protected, and on the other hand, it is convenient for the subsequent rapid positioning and assembly of the side plate.
  • the above-mentioned battery module further includes: a first side plate and a second side plate, the first side plate and the second side plate are respectively provided at the battery module along the length direction of the battery module.
  • a first side plate and a second side plate On the two side walls of the stack, and the first side plate and the second side plate corresponding to the first groove and the second groove position respectively inwardly protrude to form a first convex portion and a first convex portion
  • Two convex parts the first convex part is fitted into the first groove, the first convex part is provided with a first connecting hole matching the first threaded hole, the second convex part Is fitted into the second groove, the second convex portion is provided with a second connecting hole matching the second threaded hole, and the first side plate and the second side plate correspond to each other
  • the positions of the first through hole and the second through hole respectively form a first opening and a second opening; an isolation plate is provided on the upper end of the stack along the length direction of the battery module
  • concave and convex reinforcing ribs are provided on the first side plate and/or the second side plate. As a result, the expansion force of the cells in the module can be effectively resisted.
  • a buffer plate is provided between the first side plate and the stack and/or between the second side plate and the stack. As a result, it can protect the battery cell.
  • Structural glue is arranged between the boards. As a result, the reliability of the battery module can be improved.
  • the present disclosure proposes a battery module.
  • the battery module includes:
  • a first baffle and a second baffle the first baffle and the second baffle are opposite and spaced apart, and the plurality of battery modules are provided on the first baffle and the second baffle In between, the first baffle and the second baffle are respectively provided with a third opening and a fourth opening at positions corresponding to the first opening and the second opening;
  • a third connecting member the third connecting member passing through the third opening, the first opening and the first through hole;
  • the fourth connecting member passes through the fourth opening, the second opening and the second through hole.
  • a third opening and a fourth opening are respectively provided on the first baffle and the second baffle at positions corresponding to the first opening and the second opening on the battery module, Then, a third connecting member is set to pass through the third opening, the first opening and the first through hole, and a fourth connecting member is set to pass through the fourth opening, the second opening, and the second through hole.
  • the third connector and the fourth connector can be used to realize the connection of multiple battery modules, which not only reduces the use of connectors It also reduces the cost and weight of the battery module, saves installation space, does not need to consider the connection stability and reliability of the power connector, and reduces the internal resistance of the connection, thereby reducing the internal consumption of the battery module, thereby making the installation of the battery Modular cars have excellent mileage.
  • the present disclosure proposes an automobile.
  • the automobile has the above-mentioned battery module.
  • the car has excellent mileage.
  • Fig. 1 is a schematic structural diagram of a battery cell in a battery module according to an embodiment of the present disclosure
  • Fig. 2 is a schematic structural diagram of a stack in a battery module according to an embodiment of the present disclosure
  • Fig. 3 is a partial structural diagram of a battery module according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a stacked body in a battery module according to another embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a partial structure of a battery module according to another embodiment of the present disclosure.
  • Fig. 6 is a schematic structural diagram of one end of a battery module according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another end structure of a battery module according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of an upper first connection row of a battery module according to an embodiment of the present disclosure.
  • Fig. 9 is a schematic structural diagram of an upper second connection row of a battery module according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a battery module according to another embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a first tab protective shell in a battery module according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a battery module according to another embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • installed e.g., it may be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • the specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.
  • the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may be that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the present disclosure proposes a battery module.
  • the battery module 100 includes a plurality of stacked bodies 1, a first connection row 2, and a second connection row 3.
  • the stacked body 1 includes a plurality of stacked cells 10, and preferably, the plurality of cells 10 are laminated by bonding with a structural glue (not shown).
  • the positive terminal of the battery core 10 forms a positive electrode tab 101
  • the negative terminal of the battery core 10 forms a negative terminal tab 102
  • the positive terminal 101 is made of aluminum or aluminum alloy
  • the negative terminal 102 is made of copper or copper alloy.
  • the shell of the battery core 10 is aluminum plastic.
  • the ends of the positive electrode tabs 101 of the multiple cells 10 in the same stack 1 form the positive electrode tab region 11
  • the ends of the negative electrode tabs 102 of the multiple cells 10 in the same stack 1 form the negative electrode.
  • the tab region 11 referring to FIG.
  • the positive tab region 11 of one stack 1 and the negative tab region 12 of the other stack 1 are welded to form a cascade welding region 13. Therefore, compared with the conventional battery module in which two adjacent stacked bodies are connected in series using copper bars, the battery module of the present application omits the copper bars connected in series with the stacked bodies, thereby reducing the cost and cost of the module. Weight improves space utilization.
  • the positive electrode tab region 11 of one stack body 1 and the negative electrode tab region 12 of the other stack body 1 of the two adjacent stacked bodies 1 are laminated and welded mainly by laser welding, and then ultrasonic welding is used for auxiliary connection.
  • the positive electrode tabs 101 of the multiple cells 10 in the stacked body 1 are bent according to the structure shown in FIG. 3, and the ends of the bent positive tabs 101
  • the positive electrode tab area 11 is formed by stacking, and the negative electrode tabs 102 of the multiple cells 10 in the stack 1 are also bent according to the structure shown in FIG.
  • a first structural hole 1011 is provided on the positive electrode tab 101 of the cascade welding zone 13
  • a second structural hole 1021 is provided on the negative electrode tab 102 of the cascade welding zone 13
  • the positive electrode tab region 11 A first through channel 103 formed by a plurality of first structural holes 1011 is provided, and a second through channel 104 formed by a plurality of second structural holes 102 is provided in the negative electrode tab region 12, and referring to FIG. 5, in the cascade welding zone 13 ,
  • the first through channel 103 on one stack 1 of the two adjacent stacked bodies 1 and the second through channel 104 on the other stack 1 penetrate to form an auxiliary connection channel 105, and the auxiliary connection channel 105 is provided with an auxiliary connection Pieces (not shown).
  • first structural hole 1011 on the positive electrode tab 101 of the cascade welding zone 13 and a second structural hole 1021 on the negative electrode tab 102 of the cascade welding zone 13, when the cascade welding is performed, the same
  • a plurality of first structure holes 1011 are overlapped to form a first through channel 103
  • a plurality of second structure holes 1011 are overlapped
  • the second through channel 104 is formed to facilitate rapid positioning when the positive electrode tab 101 and the negative electrode tab 102 are stacked.
  • the positive electrode tab region 11 of one stack body 1 and the other stack body in two adjacent stacked bodies 1 When the negative electrode tab area 12 of 1 is laminated and welded to form the cascade welding zone 13, the first through channel 103 and the second through channel 104 are superimposed to form an auxiliary connecting channel 105, thereby facilitating the formation of the cascade welding zone 13 by two adjacent stacked bodies 1
  • the rapid positioning at the time, and the provision of auxiliary connectors in the auxiliary connection channels 105 of the cascade welding zone 13 can improve the reliable connection of the two adjacent stacked bodies 1.
  • the auxiliary connecting member may be a riveting member or a bolt, etc. .
  • the first connecting row 2 is provided with a first slot 21, and the positive electrode tab 101 of the positive electrode tab region 11 of the stack 1 at the end passes through the first slot 21 and the first slot 21.
  • a connecting row 2 is attached, the second connecting row 3 is provided with a second slot 31, and the negative electrode tab 102 of the negative electrode tab area 12 of the stack 1 at the end passes through the second slot 31 and is connected to the second Row 3 fits.
  • the first slot 21 on the first connection row 2 is parallel to the cell 10 of the stack 1 at the end, and the first slot 21 on the first connection row 2 corresponds to the number of the cells 10 one-to-one.
  • one positive electrode tab 101 corresponds to a first slot 21, so that the positive electrode tab 101 of the stack at the end is passed through a first slot 21 and then attached to the first connecting row 2 to realize the end
  • the positive electrode tabs 101 of the stacked cells 10 in the stack 1 are connected in parallel, and the second slot 31 on the second connection row 3 is parallel to the cells 10 of the stack 1 at the end, and the second connection row 3 is
  • the second slot 31 corresponds to the number of the battery 10, that is, one negative electrode tab 102 corresponds to one second slot 31, so that the negative electrode tab 101 of the stack at the end passes through the second slot.
  • connection row 3 After 31 and the second connection row 3 are attached to realize the parallel connection of the negative electrode tabs 102 of the stacked cells 10 in the end stack 1, and the positive electrode tab 101 of the end stack 1 and the first connection row 2 After bonding, laser welding is performed to improve the reliability of the positive electrode tab 101. At the same time, the negative electrode tab 102 of the end stack 1 and the second connecting row 3 are bonded together and then laser welded to improve the connection of the negative electrode tab 102.
  • one of the first connecting row 2 and the second connecting row 3 is provided with a connecting screw 22 at one end away from the stack 1, and the other of the first connecting row 2 and the second connecting row 3 is provided with Connecting holes 32, and the connecting screws 22 correspond to the connecting holes 32 one-to-one, that is, when connecting two battery modules 100 in series, only the connecting screw 22 on one battery module 100 needs to be matched with the connecting hole 32 on the other battery module 100
  • the series connection of the two battery modules 100 can be realized, and the use of connection accessories can be further reduced.
  • the first connecting row 2 is provided with connecting screws 22, and the second connecting row 3 is provided with connecting holes 32.
  • connecting screws 22 and connecting holes 32 on the first connecting row 2 and the second connecting row can be selected according to actual needs, as long as the reliable connection of two adjacent battery modules 100 can be achieved, for example, Two connecting screws 22 are provided on the first connecting row 2 or the second connecting row 3, and the two connecting screws 22 are arranged symmetrically on the first connecting row 2 or the second connecting row 3.
  • the above-mentioned battery module 100 further includes a first tab protection shell 14 and a second tab protection shell 15, wherein the first tab protection shell 14 is respectively clamped to the upper end and the lower end of the cascade welding zone 13 , That is, two first tab protection shells 14 are provided at the cascade welding area 13, and the two first tab protection shells 14 are respectively clamped to the cascade tab area 13 from the upper and lower ends of the battery module 100, and refer to 11, the first tab protection shell 14 is provided with a first through hole 141 and a first groove 142, and the first groove 142 is provided with a first threaded hole 1421, refer to FIG.
  • the second tab protection shell 15 It is clamped with the positive electrode tab area 11 or the negative electrode tab area 12 of the stack 1 at the end, and the second tab protective shell 15 is provided with a second through hole 151 and a second groove 152, and the second groove A second threaded hole 1521 is provided in the 152. It should be noted that those skilled in the art can select the number of the first through hole 141, the first groove 142, the second through hole 151, and the second groove 152 according to actual needs.
  • the first tab protection The housing 14 is provided with a first through hole 141 and a first groove 142
  • the second tab protection housing 15 is provided with two second through holes 151 and two second grooves 152, and two second through holes 151 are arranged symmetrically, and the two second grooves 152 are also arranged symmetrically.
  • the first groove 142 and the second groove 152 are both circular grooves, which serve as a guide for subsequent side plate installation and realize rapid assembly.
  • the first tab protection shell 14 and the second tab protection shell 15 are both insulating and flame-retardant plastics, such as PP, APS, PC, PA, PA66 and other materials.
  • the above-mentioned battery module further includes a first side plate 16, a second side plate 17, an isolation plate 18, a first connector (not shown), and a second connector (not shown).
  • the first side plate 16 and the second side plate 17 are respectively provided on the two side walls of the stack 1 along the length direction of the battery module 100, and the first side plate 16 and the second side plate 17 correspond to each other.
  • the positions of the first groove 142 and the second groove 152 respectively form a first convex portion 162 and a second convex portion 172, that is, the positions on the first side plate 16 and the second side plate 17 corresponding to the first groove 142
  • a first convex portion 162 is formed, and a second convex portion 172 is formed on the first side plate 16 and the second side plate 17 corresponding to the position of the second groove 152, and the first convex portion 162 is fitted into the first groove 142
  • the first protrusion 162 is provided with a first connecting hole 1621 matching the first threaded hole 1421
  • the second protrusion 172 is fitted in the second groove 152
  • the second protrusion 172 is provided with a second
  • the threaded hole 1521 is matched with the second
  • the second protrusion 172 and the second groove 152 can cooperate to realize the quick assembly of the first side plate 16 and the second side plate 17, and the first side plate 16 and the second side plate 17 correspond to the first through hole 141 And the second through hole 151 respectively form a first opening 161 and a second opening 171, that is, the first side plate 16 and the second side plate 17 corresponding to the first through hole 141 are both formed with the first opening 161
  • a second opening 171 is formed on the first side plate 16 and the second side plate 17 at positions corresponding to the second through holes 151.
  • the isolation plate 18 is provided on the upper and lower ends of the stack 1 along the length direction of the battery module 100, the first connecting member passes through the first connecting hole 1621 to match the first threaded hole 1421, and the second connecting member passes through the first threaded hole 1421.
  • the two connecting holes 1721 are matched with the second threaded holes 1521 so as to realize the reliable installation of the first side plate 16 and the second side plate 17.
  • the first side plate 16 and/or the second side plate 17 are provided with concave-convex reinforcing ribs (not shown), so as to effectively resist the expansion force of the battery core in the module, and the first connecting piece and the second connecting piece All are bolts.
  • the first side plate 16 and the second side plate 17 are made of metal or plastic.
  • the metal is aluminum, aluminum, copper, iron and their alloy materials.
  • the metal can be formed by stamping, and the plastic is a thermosetting plastic, such as SMC, which has Higher strength, thermosetting materials can be molded by injection molding.
  • a buffer plate 19 is provided between the first side plate 16 and the stack 1 and/or between the second side plate 17 and the stack 1, which is used to provide fixed electricity when the stack 1 is initially assembled.
  • the material of the buffer plate 21 can be an insulating, flame-retardant plastic, such as PP, APS, PC, PA, PA66 and other materials.
  • structural glue is provided between the stack 1 and the buffer plate 21, and between the buffer plate 21 and the first side wall 16 and the second side plate 17, respectively, so as to improve the reliability of the battery module.
  • a stack is formed by stacking a plurality of cells, and the positive pole tab end of the cell in the same stack forms a positive pole tab area, and the negative pole of the cell in the same stack
  • the end of the ear forms a negative electrode tab area
  • the positive electrode tab area of one of the two adjacent stacked bodies is welded to the negative electrode tab area of the other stacked body to form a cascade welding area, and at the same time, the connection bar is used to connect at the end.
  • the positive electrode tab of the positive electrode tab area and/or the negative electrode tab of the negative electrode tab area of the stacked body compared with the existing battery module in which two adjacent stacked bodies are connected in series by copper bars, the battery of the present application
  • the module omits the copper bars of the connection accessories connected in series with the stacked body, thereby reducing the cost and weight of the module, and improving the space utilization rate.
  • one end of the first connection row and the second connection row is far away from the stack body. Connecting screws are provided, and the other of the first connecting row and the second connecting row is provided with connecting holes.
  • the present disclosure proposes a battery module.
  • the battery module includes: a battery module 100, a first baffle 200, a second baffle 300, a third connection member 400, and a fourth connection member 500.
  • the battery module includes a plurality of the above-mentioned battery modules 100 that omits the parallel connection of the battery cells and the parallel connection of the stacked body and the copper bar of the accessory.
  • the plurality of battery modules 100 are arranged in sequence, and the plurality of battery modules 100 The first openings 161 of the battery modules pass through, and the second openings 171 of the plurality of battery modules 100 pass through.
  • the first baffle 200 and the second baffle 300 are arranged oppositely and spaced apart, a plurality of battery modules 100 are arranged between the first baffle 200 and the second baffle 300, and the first baffle 200 and the second baffle
  • the board 300 is provided with a third opening 201 and a fourth opening 301 at positions corresponding to the first opening 161 and the second opening 171, that is, the first baffle 200 and the second baffle 300 correspond to the first opening
  • the positions of 161 are all provided with a third opening 201, and the positions of the first baffle 200 and the second baffle 300 corresponding to the second opening 171 are provided with a fourth opening 301.
  • the third connecting member 400 passes through the third opening 201, the first opening 161 and the first through hole 141, and the fourth connecting member 500 passes through the fourth opening 301, the second opening 171 and the second through hole. 151, so that the third connecting member 400 and the fourth connecting member 500 can be used to realize the fixation of a plurality of battery modules 100.
  • the third connecting member 400 and the fourth connecting member 500 each include a bolt 51 and a nut 52, and the first baffle 200 is close to the first side plates 16 of the plurality of battery modules 100, and the second baffle 300 is close to the plurality of batteries. Take the second side plate 17 of the module 100 as an example.
  • the bolts 51 pass through the third opening 201 on the first baffle 200, the first opening 161 on the first side plate 16, and the first tab protection shell 14.
  • the first through hole 141 on the second side plate 17 and the third hole 201 on the second baffle 300, and the nut 52 is provided on the second baffle 300 away from the first baffle 200
  • the bolt 51 passes through the fourth opening 301 on the first baffle 200, the second opening 171 on the first side plate 16, and the second lug protection shell 15
  • the second through hole 151, the second opening 171 on the second side plate 17 and the fourth opening 301 on the second baffle 300, and the nut 52 is provided on the second baffle 300 away from the first baffle 200 One side is locked in conjunction with the bolt 51.
  • the present disclosure proposes an automobile.
  • the automobile has the above-mentioned battery module.
  • the car is a new energy car.
  • the car has excellent mileage. It should be noted that the features and advantages described above for the battery module are also applicable to the car, and will not be repeated here.

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Abstract

公开了一种电池模块及具有其的电池模组和汽车，其中，所述电池模块包括多个堆叠体、第一连接排和第二连接排，堆叠体包括多个层叠的电芯，多个电芯的正极极耳端部形成正极极耳区，多个电芯的负极极耳端部形成负极极耳区，相邻两个堆叠体中一个堆叠体的正极极耳区与另一个堆叠体的负极极耳区层叠焊接形成级联焊接区；第一连接排上设有第一开槽，位于端部的堆叠体的正极极耳区的正极极耳穿过第一开槽与第一连接排贴合；第二连接排上设有第二开槽，位于端部的堆叠体的负极极耳区的负极极耳穿过第二开槽与第二连接排贴合，第一连接排和第二连接排中的一个上远离堆叠体的一端设有连接螺钉，第一连接排和第二连接排中的另一个上设有连接孔。

Description

电池模块及具有其的电池模组和汽车
优先权信息
本公开请求于2020年4月30日向中国国家知识产权局提交的、专利申请号为202010368374.4、申请名称为“电池模块及具有其的电池模组和汽车”以及于2020年4月30日向中国国家知识产权局提交的、专利申请号为202020714577.X、申请名称为“电池模块及具有其的电池模组和汽车”的中国专利申请的优先权，并且其全部内容通过引用结合在本公开中。
技术领域
本公开属于电池领域，具体涉及一种电池模块及具有其的电池模组和汽车。
背景技术
随着新能源汽车的不断普及，对新能源汽车中动力电池的使用要求变得越来越高。特别是用户对新能源汽车续时里程要求的不断提高。常见的新能源汽车，作为新能源汽车的动力电池包，无论在长度还是宽度方向，都超过1米；而目前市面上，电池模块的长度一般在0.3米左右，所以在动力电池包中，需要设置至少3个，甚至更多电池模块。
设置多个电池模块，对每个电池模块均需要添加固定结构，同时，相邻两个电池模块之间需要通过外设的动力连接件进行动力连接。导致电池模块安装结构较多，不仅成本提高，而且导致整体重量上升；同时，单个模组体积内，安装结构占用了较多的内部空间，造成动力电池模块，电池包包整体容量降低，电池包内电池模块设置越多，空间浪费就越多。另外，因需要设置多个外置动力连接件进行动力连接，导致内阻、成本增加，提高了动力电池包在使用中的内耗和成本。
公开内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出一种电池模块及具有其的电池模组和汽车，该电池模块省去了堆叠体并联的连接附件铜排，从而减少了模块的成本和重量，提高了空间利用率。
在本公开的一个方面，本公开提出了一种电池模块。根据本公开的实施例，所述电池模块包括：
多个堆叠体，所述堆叠体包括多个层叠的电芯，并且多个所述电芯的正极极耳端部形成正极极耳区，多个所述电芯的负极极耳端部形成负极极耳区，相邻两个所述堆叠体中一 个所述堆叠体的正极极耳区与另一个所述堆叠体的负极极耳区层叠焊接形成级联焊接区；
第一连接排，所述第一连接排上设有第一开槽，位于端部的所述堆叠体的正极极耳区的正极极耳穿过所述第一开槽与所述第一连接排贴合；
第二连接排，所述第二连接排上设有第二开槽，位于端部的所述堆叠体的负极极耳区的负极极耳穿过所述第二开槽与所述第二连接排贴合；
其中，所述第一连接排和所述第二连接排中的一个上远离所述堆叠体的一端设有连接螺钉，所述第一连接排和所述第二连接排中的另一个上设有连接孔。
根据本公开实施例的电池模块，通过将多个电芯层叠形成堆叠体，并且同一个堆叠体中电芯的正极极耳端部形成正极极耳区，同一个堆叠体中电芯的负极极耳端部形成负极极耳区，并且相邻两个堆叠体中一个堆叠体的正极极耳区与另一个堆叠体的负极极耳区焊接形成级联焊接区，同时采用连接排连接位于端部堆叠体的正极极耳区的正极极耳和/或负极极耳区的负极极耳，相较于现有的电池模块中相邻两个堆叠体采用铜排进行串联的方式，本申请的电池模块省去了堆叠体串联的连接附件铜排，从而减少了模块的成本和重量，提高了空间利用率，另外本申请在第一连接排和第二连接排中的一个上远离堆叠体的一端设有连接螺钉，第一连接排和第二连接排中的另一个上设有连接孔，在将两个电池模块串联时仅需要将一个电池模块上的连接螺钉与另一个电池模块上的连接孔配合即可实现两个电池模块的串联连接，进一步减少连接附件的使用。
另外，根据本公开上述实施例的电池模块还可以具有如下附加的技术特征：
在本公开的一些实施例中，位于所述级联焊接区的所述正极极耳上设有第一结构孔，位于所述级联焊接区的所述负极极耳上设有第二结构孔，所述正极极耳区设有多个所述第一结构孔形成的第一贯穿通道，所述负极极耳区设有多个所述第二结构孔形成的第二贯穿通道，并且在所述级联焊接区，所述第一贯穿通道与所述第二贯穿通道贯通形成辅助连接通道，所述辅助连接通道中设有辅助连接件。由此，可以提高电池模块内部连接的可靠性。
在本公开的一些实施例中，上述电池模块进一步包括：第一极耳保护壳，所述第一极耳保护壳分别与所述级联焊接区的上端和下端卡接，并且所述第一极耳保护壳上设有第一通孔和第一凹槽，所述第一凹槽内设有第一螺纹孔。由此，一方面对极耳保护区进行保护，再一方面方便后续侧板的快速定位和装配。
在本公开的一些实施例中，上述电池模块进一步包括：第二极耳保护壳，所述第二极耳保护壳与位于端部的所述堆叠体的所述正极极耳区或所述负极极耳区卡接，并且所述第二极耳保护壳上设有第二通孔和第二凹槽，所述第二凹槽内设有第二螺纹孔。由此，一方面对正极极耳区进行保护，再一方面方便后续侧板的快速定位和装配。
在本公开的一些实施例中，上述电池模块进一步包括：第一侧板和第二侧板，所述第 一侧板和所述第二侧板分别沿所述电池模块的长度方向设在所述堆叠体的两侧壁上，并且所述第一侧板和所述第二侧板上对应所述第一凹槽和所述第二凹槽的位置分别内凸形成第一凸部和第二凸部，所述第一凸部嵌合在所述第一凹槽中，所述第一凸部上设有与所述第一螺纹孔匹配的第一连接孔，所述第二凸部嵌合在所述第二凹槽中，所述第二凸部上设有与所述第二螺纹孔匹配的第二连接孔，所述第一侧板和所述第二侧板上对应所述第一通孔和所述第二通孔的位置分别形成第一开孔和第二开孔；隔离板，所述隔离板沿所述电池模块的长度方向设在所述堆叠体的上端和下端；第一连接件，所述第一连接件穿过所述第一连接孔与所述第一螺纹孔匹配；第二连接件，所述第二连接件穿过所述第二连接孔与所述第二螺纹孔匹配。由此，可以实现侧板的快速装配，同时提高电池模块的可靠性。
在本公开的一些实施例中，所述第一侧板和/或所述第二侧板上设有凹凸加强筋。由此，可以有效抵抗模块内电芯的膨胀力。
在本公开的一些实施例中，所述第一侧板与所述堆叠体之间和/或所述第二侧板与所述堆叠体之间设有缓冲板。由此，可以起到保护电芯的作用。
在本公开的一些实施例中，相邻两个所述电芯之间、所述堆叠体与所述缓冲板之间、所述缓冲板分别与所述第一侧壁和所述第二侧板之间设有结构胶。由此，可以提高电池模块的可靠性。
在本公开的再一个方面，本公开提出了一种电池模组。根据本公开的实施例，所述电池模组包括：
多个上述的电池模块；
第一挡板和第二挡板，所述第一挡板和所述第二挡板相对且间隔布置，并且所述多个电池模块设在所述第一挡板和所述第二挡板之间，所述第一挡板和所述第二挡板上对应所述第一开孔和所述第二开孔的位置分别设有第三开孔和第四开孔；
第三连接件，所述第三连接件穿过所述第三开孔、所述第一开孔和所述第一通孔；
第四连接件，所述第四连接件穿过所述第四开孔、所述第二开孔和所述第二通孔。
根据本公开实施例的电池模组，通过在第一挡板和第二挡板上对应电池模块上第一开孔和第二开孔的位置分别设有第三开孔和第四开孔，然后设置第三连接件穿过所述第三开孔、所述第一开孔和所述第一通孔，设置第四连接件穿过第四开孔、第二开孔和第二通孔实现上述多个电池模块固定，相对于现有技术中相邻两个电池模块之间需要设置外设的动力连接件进行动力连接，即多个电池模块需要采用多个动力连接件进行连接，本申请的电池模组内相邻两个电池模块之间不需要设置动力连接件，而是仅采用第三连接件和第四连接件即可实现多个电池模块的相连，不仅减少了连接件使用，而且降低了电池模组的成本和重量，节省了安装空间，同时无需考虑动力连接件的连接稳定性及可靠性，降低了连接内阻， 从而减少电池模组的内耗，进而使得安装该电池模组的汽车具有优异的续时里程。
在本公开的第三个方面，本公开提出了一种汽车。根据本公开的实施例，所述汽车具有上述的电池模组。由此，该汽车具有优异的续时里程。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开一个实施例的电池模块中电芯的结构示意图；
图2是根据本公开一个实施例的电池模块中堆叠体的结构示意图；
图3是根据本公开一个实施例的电池模块的部分结构示意图；
图4是根据本公开再一个实施例的电池模块中堆叠体的结构示意图；
图5是根据本公开再一个实施例的电池模块的部分结构示意图；
图6是根据本公开一个实施例的电池模块的一端部结构示意图；
图7是根据本公开再一个实施例的电池模块的另一端部结构示意图；
图8是根据本公开一个实施例的电池模块的上第一连接排的结构示意图；
图9是根据本公开一个实施例的电池模块的上第二连接排的结构示意图；
图10是根据本公开再一个实施例的电池模块的结构示意图；
图11是根据本公开一个实施例的电池模块中第一极耳保护壳的结构示意图；
图12是根据本公开又一个实施例的电池模块的结构示意图；
图13是根据本公开一个实施例的电池模组的结构示意图。
公开详细描述
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开第一个方面，本公开提出了一种电池模块。根据本公开的实施例，参考图1-12，该电池模块100包括多个堆叠体1、第一连接排2和第二连接排3。
其中，堆叠体1包括多个层叠的电芯10，优选多个电芯10通过结构胶(未示出)粘接进行层叠。参考图1，电芯10的正极端部形成正极极耳101，电芯10的负极端部形成负极极耳102，并且正极极耳101为铝或铝合金，负极极耳102为铜或铜合金，电芯10的外壳为铝塑料。并且参考图2，同一个堆叠体1中多个电芯10的正极极耳101端部形成正极极耳区11，同一个堆叠体1中多个电芯10的负极极耳102端部形成负极极耳区11，参考图3，相邻两个堆叠体1中一个堆叠体1的正极极耳区11与另一个堆叠体1的负极极耳区12焊接形成级联焊接区13。由此，相较于现有的电池模块中相邻两个堆叠体采用铜排进行串联的方式，本申请的电池模块省去了堆叠体串联的连接附件铜排，从而减少了模块的成本和重量，提高了空间利用率。具体的，相邻两个堆叠体1中一个堆叠体1的正极极耳区11与另一个堆叠体1的负极极耳区12层叠焊接的方式主要采用激光焊接，然后采用超声焊接进行辅助连接。
进一步的，相邻两个堆叠体1进行级联焊接时，堆叠体1中多个电芯10的正极极耳101按照图3所示结构折弯，并且使得折弯的正极极耳101端部层叠形成正极极耳区11，堆叠体1中多个电芯10的负极极耳102也按照图3所示结构折弯，使得折弯的负极极耳102端部层叠形成负极极耳区11，同时参考图4，位于级联焊接区13的正极极耳101上设有第一结构孔1011，位于级联焊接区13的负极极耳102上设有第二结构孔1021，正极极耳区11 设有多个第一结构孔1011形成的第一贯穿通道103，负极极耳区12设有多个第二结构孔102形成的第二贯穿通道104，并且参考图5，在级联焊接区13，相邻两个堆叠体1中的一个堆叠体1上的第一贯穿通道103与另一个堆叠体1上的第二贯穿通道104贯通形成辅助连接通道105，辅助连接通道105中设有辅助连接件(未示出)。具体的，通过在级联焊接区13的正极极耳101上设置第一结构孔1011，在级联焊接区13的负极极耳102上设置第二结构孔1021，在进行级联焊接时，同一个堆叠体1内对多个电芯10的正极极耳101端部和负极极耳102层叠时将多个第一结构孔1011重合形成第一贯穿通道103，将多个第二结构孔1011重合形成第二贯穿通道104，从而有利于正极极耳101和负极极耳102层叠时的快速定位，同时在相邻两个堆叠体1中一个堆叠体1的正极极耳区11与另一个堆叠体1的负极极耳区12层叠焊接形成级联焊接区13时将第一贯穿通道103和第二贯穿通道104重合形成辅助连接通道105，从而利于相邻两个堆叠体1形成级联焊接区13时的快速定位，并且在级联焊接区13的辅助连接通道105中设置辅助连接件可以提高相邻两个堆叠体1的可靠连接。需要说明的是，本领域技术人员可以根据实际需要对辅助连接件的具体类型进行选择，只要能实现相邻两个堆叠体1的可靠连接即可，例如辅助连接件可以为铆接件或螺栓等。
进一步地，参考图6和7，第一连接排2上设有第一开槽21，位于端部的堆叠体1的正极极耳区11的正极极耳101穿过第一开槽21与第一连接排2贴合，第二连接排3上设有第二开槽31，位于端部的堆叠体1的负极极耳区12的负极极耳102穿过第二开槽31与第二连接排3贴合。优选地，第一连接排2上第一开槽21与位于端部的堆叠体1的电芯10平行，并且第一连接排2上第一开槽21与电芯10个数一一对应，即一个正极极耳101对应一个第一开槽21，从而将位于端部的堆叠体的正极极耳101分别穿过一个第一开槽21后与第一连接排2进行贴合即可实现端部堆叠体1中层叠电芯10的正极极耳101的并联，同时第二连接排3上第二开槽31与位于端部的堆叠体1的电芯10平行，并且第二连接排3上第二开槽31与电芯10个数一一对应，即一个负极极耳102对应一个第二开槽31，从而将位于端部的堆叠体的负极极耳101分别穿过一个第二开槽31后与第二连接排3进行贴合即可实现端部堆叠体1中层叠电芯10的负极极耳102的并联，并且位于端部堆叠体1的正极极耳101与第一连接排2贴合后进行激光焊接以提高正极极耳101连级的可靠性，同时位于端部堆叠体1的负极极耳102与第二连接排3贴合后进行激光焊接以提高负极极耳102连接的可靠性，另外，第一连接排2和第二连接排3中的一个上远离堆叠体1的一端设有连接螺钉22，第一连接排2和第二连接排3中的另一个上设有连接孔32，并且连接螺钉22与连接孔32一一对应，即在将两个电池模块100串联时仅需要将一个电池模块100上的连接螺钉22与另一个电池模块100上的连接孔32配合即可实现两个电池模块100的串联连 接，进一步减少连接附件的使用。例如，参考图8和9，以第一连接排2上设置连接螺钉22，以第二连接排3上设置连接孔32。并且本领域技术人员可以根据实际需要对第一连接排2和第二连接排上连接螺钉22和连接孔32的数量进行选择，只要能实现相邻两个电池模块100的可靠连接即可，例如第一连接排2或第二连接排3上设置两个连接螺钉22，并且两个连接螺钉22第一连接排2或第二连接排3上对称布置。
进一步，参考图10，上述电池模块100还包括第一极耳保护壳14和第二极耳保护壳15，其中，第一极耳保护壳14分别与级联焊接区13的上端和下端卡接，即级联焊接区13处设置两个第一极耳保护壳14，两个第一极耳保护壳14分别从电池模块100的上端和下端与级联极耳区13进行卡接，并且参考图11，第一极耳保护壳14上设有第一通孔141和第一凹槽142，第一凹槽142内设有第一螺纹孔1421，参考图6，第二极耳保护壳15与位于端部的堆叠体1的正极极耳区11或负极极耳区12卡接，并且第二极耳保护壳15上设有第二通孔151和第二凹槽152，第二凹槽152内设有第二螺纹孔1521。需要说明的是，本领域技术人员可以根据实际需要对第一通孔141、第一凹槽142、第二通孔151和第二凹槽152的数量进行选择，优选地，第一极耳保护壳14上设置一个第一通孔141和一个第一凹槽142，第二极耳保护壳15上设置两个第二通孔151和两个第二凹槽152，并且两个第二通孔151对称布置，两个第二凹槽152也对称布置，同时第一凹槽142和第二凹槽152均为圆形凹槽，起到对后续侧板安装的导向，实现快速装配。具体的，第一极耳保护壳14和第二极耳保护壳15均为绝缘且阻燃的塑料，例如PP、APS、PC、PA和PA66等材质。
进一步，参考图12，上述电池模块还包括第一侧板16、第二侧板17、隔离板18、第一连接件(未示出)和第二连接件(未示出)。
其中，参考图12，第一侧板16和第二侧板17分别沿电池模块100的长度方向设在堆叠体1的两侧壁上，并且第一侧板16和第二侧板17上对应第一凹槽142和第二凹槽152的位置分别内凸形成第一凸部162和第二凸部172，即第一侧板16和第二侧板17上对应第一凹槽142的位置均形成第一凸部162，第一侧板16和第二侧板17上对应第二凹槽152的位置形成均形成第二凸部172，第一凸部162嵌合在第一凹槽142中，第一凸部162上设有与第一螺纹孔1421匹配的第一连接孔1621，第二凸部172嵌合在第二凹槽152中，第二凸部172上设有与第二螺纹孔1521匹配的第二连接孔1721，从而在将第一侧板16和第二侧板17设在堆叠体1的两侧壁上时只要将第一凸部162与第一凹槽142配合以及第二凸部172与第二凹槽152配合即可实现第一侧板16和第二侧板17的快速装配，同时第一侧板16和第二侧板17上对应第一通孔141和第二通孔151的位置分别形成第一开孔161和第二开孔171，即第一侧板16和第二侧板17上对应第一通孔141的位置均形成第一开孔161，第一侧板16和第二侧板17上对应第二通孔151的位置均形成第二开孔171。
参考图12，隔离板18沿电池模块100的长度方向设在堆叠体1的上端和下端，第一连接件穿过第一连接孔1621与第一螺纹孔1421匹配，第二连接件穿过第二连接孔1721与第二螺纹孔1521匹配，从而实现第一侧板16和第二侧板17的可靠安装。优选地，第一侧板16和/或第二侧板17上设有凹凸加强筋(未示出)，从而可以有效抵抗模块内电芯的膨胀力，并且第一连接件和第二连接件均为螺栓。具体的，第一侧板16和第二侧板17材质为金属或者塑料，金属为如铝铝、铜、铁及其合金材料，金属可以采用冲压成型，塑料为热固性塑料，如SMC，其具有较高强度，热固性材料可以采用模具注塑成型。
进一步地，参考图12，上述第一侧板16与堆叠体1之间和/或第二侧板17与堆叠体1之间设有缓冲板19，用于初期组装堆叠体1时提供固定电芯10的预紧力以及使用末期对电芯10膨胀力的吸收。需要说明的是，本领域技术人员可以根据实际需要对缓冲板21材质进行选择，例如可以为绝缘、阻燃的塑料，如PP、APS、PC、PA、PA66等材质。同时堆叠体1与缓冲板21之间、缓冲板21分别与第一侧壁16和第二侧板17之间设有结构胶，从而提高电池模块的可靠性。
根据本公开实施例的电池模块，通过将多个电芯层叠形成堆叠体，并且同一个堆叠体中电芯的正极极耳端部形成正极极耳区，同一个堆叠体中电芯的负极极耳端部形成负极极耳区，并且相邻两个堆叠体中一个堆叠体的正极极耳区与另一个堆叠体的负极极耳区焊接形成级联焊接区，同时采用连接排连接位于端部堆叠体的正极极耳区的正极极耳和/或负极极耳区的负极极耳，相较于现有的电池模块中相邻两个堆叠体采用铜排进行串联的方式，本申请的电池模块省去了堆叠体串联的连接附件铜排，从而减少了模块的成本和重量，提高了空间利用率，另外本申请在第一连接排和第二连接排中的一个上远离堆叠体的一端设有连接螺钉，第一连接排和第二连接排中的另一个上设有连接孔，在将两个电池模块串联时仅需要将一个电池模块上的连接螺钉与另一个电池模块上的连接孔配合即可实现两个电池模块的串联连接，进一步减少连接附件的使用
在本公开的再一个方面，本公开提出了一种电池模组。根据本公开的实施例，参考图13，电池模组包括：电池模块100、第一挡板200、第二挡板300、第三连接件400和第四连接件500。
其中，参考图13，该电池模组包括多个上述的省去了电芯并联以及堆叠体并联的连接附件铜排的电池模块100，多个电池模块100依次排列布置，并且多个电池模块100的第一开孔161贯通，同时多个电池模块100的第二开孔171贯通。
参考图13，第一挡板200和第二挡板300相对且间隔布置，多个电池模块100设在第一挡板200和第二挡板300之间，第一挡板200和第二挡板300上对应第一开孔161和第二开孔171的位置分别设有第三开孔201和第四开孔301，即第一挡板200和第二挡板300 上对应第一开孔161的位置均设有第三开孔201，第一挡板200和第二挡板300上对应第二开孔171的位置均设有第四开孔301。
其中，第三连接件400穿过第三开孔201、第一开孔161和第一通孔141，第四连接件500穿过第四开孔301、第二开孔171和第二通孔151，从而采用第三连接件400和第四连接件500即可实现多个电池模块100的固定。优选地，第三连接件400和第四连接件500均包括螺栓51和螺母52，以第一挡板200靠近多个电池模块100的第一侧板16，第二挡板300靠近多个电池模块100的第二侧板17为例，螺栓51依次穿过第一挡板200上的第三开孔201、第一侧板16上的第一开孔161、第一极耳保护壳14上的第一通孔141、第二侧板17上的第一开孔161以及第二挡板300上的第三开孔201，并且螺母52设在第二挡板300上远离第一挡板200的一侧且与螺栓51配合锁死；螺栓51穿过第一挡板200上的第四开孔301、第一侧板16上的第二开孔171、第二极耳保护壳15上的第二通孔151、第二侧板17上的第二开孔171以及第二挡板300上的第四开孔301，并且螺母52设在第二挡板300上远离第一挡板200的一侧且与螺栓51配合锁死。
相对于现有技术中相邻两个电池模块之间需要设置外设的动力连接件进行动力连接，即多个电池模块需要采用多个动力连接件进行连接，本申请的电池模组内相邻两个电池模块之间不需要设置动力连接件，而是仅采用第三连接件和第四连接件即可实现多个电池模块的相连，不仅减少了连接件使用，而且降低了电池模组的成本和重量，节省了安装空间，同时无需考虑动力连接件的连接稳定性及可靠性，降低了连接内阻，从而减少电池模组的内耗，进而使得安装该电池模组的汽车具有优异的续时里程。需要说明的是，上述针对电池模块所描述的特征和优点同样适用于该电池模组，此处不再赘述。
在本公开的第三个方面，本公开提出了一种汽车。根据本公开的实施例，所述汽车具有上述的电池模组。优选地，该汽车为新能源汽车。由此，该汽车具有优异的续时里程。需要说明的是，上述针对电池模组所描述的特征和优点同样适用于该汽车，此处不再赘述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的， 不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种电池模块，其中，包括：
    多个堆叠体，所述堆叠体包括多个层叠的电芯，并且多个所述电芯的正极极耳端部形成正极极耳区，多个所述电芯的负极极耳端部形成负极极耳区，相邻两个所述堆叠体中一个所述堆叠体的正极极耳区与另一个所述堆叠体的负极极耳区层叠焊接形成级联焊接区；
    第一连接排，所述第一连接排上设有第一开槽，位于端部的所述堆叠体的正极极耳区的正极极耳穿过所述第一开槽与所述第一连接排贴合；
    第二连接排，所述第二连接排上设有第二开槽，位于端部的所述堆叠体的负极极耳区的负极极耳穿过所述第二开槽与所述第二连接排贴合，
    其中，所述第一连接排和所述第二连接排中的一个上远离所述堆叠体的一端设有连接螺钉，所述第一连接排和所述第二连接排中的另一个上设有连接孔。
  2. 根据权利要求1所述的电池模块，其中，位于所述级联焊接区的所述正极极耳上设有第一结构孔，位于所述级联焊接区的所述负极极耳上设有第二结构孔，所述正极极耳区设有多个所述第一结构孔形成的第一贯穿通道，所述负极极耳区设有多个所述第二结构孔形成的第二贯穿通道，并且在所述级联焊接区，所述第一贯穿通道与所述第二贯穿通道贯通形成辅助连接通道，所述辅助连接通道中设有辅助连接件。
  3. 根据权利要求1或2所述的电池模块，其中，进一步包括：第一极耳保护壳，所述第一极耳保护壳分别与所述级联焊接区的上端和下端卡接，并且所述第一极耳保护壳上设有第一通孔和第一凹槽，所述第一凹槽内设有第一螺纹孔。
  4. 根据权利要求1-3中任一项所述的电池模块，其中，进一步包括：第二极耳保护壳，所述第二极耳保护壳与位于端部的所述堆叠体的所述正极极耳区或所述负极极耳区卡接，并且所述第二极耳保护壳上设有第二通孔和第二凹槽，所述第二凹槽内设有第二螺纹孔。
  5. 根据权利要求1-4中任一项所述的电池模块，其中，进一步包括：
    第一侧板和第二侧板，所述第一侧板和所述第二侧板分别沿所述电池模块的长度方向设在所述堆叠体的两侧壁上，并且所述第一侧板和所述第二侧板上对应所述第一凹槽和所述第二凹槽的位置分别内凸形成第一凸部和第二凸部，所述第一凸部嵌合在所述第一凹槽中，所述第一凸部上设有与所述第一螺纹孔匹配的第一连接孔，所述第二凸部嵌合在所述第二凹槽中，所述第二凸部上设有与所述第二螺纹孔匹配的第二连接孔，所述第一侧板和所述第二侧板上对应所述第一通孔和所述第二通孔的位置分别形成第一开孔和第二开孔；
    隔离板，所述隔离板沿所述电池模块的长度方向设在所述堆叠体的上端和下端；
    第一连接件，所述第一连接件穿过所述第一连接孔与所述第一螺纹孔匹配；
    第二连接件，所述第二连接件穿过所述第二连接孔与所述第二螺纹孔匹配。
  6. 根据权利要求1-5中任一项所述的电池模块，其中，所述第一侧板和/或所述第二侧板上设有凹凸加强筋。
  7. 根据权利要求1-6中任一项所述的电池模块，其中，所述第一侧板与所述堆叠体之间和/或所述第二侧板与所述堆叠体之间设有缓冲板。
  8. 根据权利要求1-7中任一项所述的电池模块，其中，相邻两个所述电芯之间、所述堆叠体与所述缓冲板之间、所述缓冲板分别与所述第一侧壁和所述第二侧板之间设有结构胶。
  9. 一种电池模组，其中，包括：
    多个权利要求1-8中任一项所述的电池模块；
    第一挡板和第二挡板，所述第一挡板和所述第二挡板相对且间隔布置，并且所述多个电池模块设在所述第一挡板和所述第二挡板之间，所述第一挡板和所述第二挡板上对应所述第一开孔和所述第二开孔的位置分别设有第三开孔和第四开孔；
    第三连接件，所述第三连接件穿过所述第三开孔、所述第一开孔和所述第一通孔；
    第四连接件，所述第四连接件穿过所述第四开孔、所述第二开孔和所述第二通孔。
  10. 一种汽车，其中，所述汽车具有权利要求9所述的电池模组。
PCT/CN2020/110881 2020-04-30 2020-08-24 电池模块及具有其的电池模组和汽车 WO2021217969A1 (zh)

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