CN211829002U

CN211829002U - Battery module and car

Info

Publication number: CN211829002U
Application number: CN202020715582.2U
Authority: CN
Inventors: 杨重科; 冯帅; 赵亮; 李成亮; 翁志福
Original assignee: Kunshan Bao Innovative Energy Technology Co Ltd
Current assignee: Kunshan Bao Innovative Energy Technology Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-10-30
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a battery module and car, battery module include a plurality of battery module, first run-on and second run-on, and a plurality of battery module range upon range of setting, battery module includes: a plurality of stacks, stacks include a plurality of electric cores of range upon range of, and the anodal utmost point ear tip of a plurality of electric cores forms anodal utmost point ear district, and the negative pole utmost point ear tip of a plurality of electric cores forms negative pole ear district, and the anodal utmost point ear district of a stack and the negative pole ear district stack welding of another stack form and cascade the weld zone in two adjacent stacks, and a plurality of battery module's positive pole all is located the one end of battery module, and a plurality of battery module's negative pole all is located the other end of battery module; the first connecting row is provided with a first slot, and positive electrode tabs of a plurality of battery modules positioned at one end of the battery module pass through the first slot to be attached to the first connecting row; and the second connecting row is provided with a second open slot, and the negative electrode tabs of the battery modules positioned at the other end of the battery module penetrate through the second open slot to be attached to the second connecting row.

Description

Battery module and car

Technical Field

The utility model belongs to the battery field, concretely relates to battery module and car.

Background

With the continuous popularization of new energy automobiles, the use requirement of power batteries in the new energy automobiles becomes higher and higher. Particularly, the requirement of the user on the continuous mileage of the new energy automobile is continuously improved. The common new energy automobile, as a power battery pack of the new energy automobile, is more than 1 meter in both the length direction and the width direction; in the current market, the length of the battery modules is generally about 0.3 m, so at least 3 or even more battery modules need to be arranged in the power battery pack.

Set up a plurality of battery module, all need add fixed knot to every battery module and construct, simultaneously, need carry out power connection through the power connecting piece of peripheral hardware between two adjacent battery modules. The battery module has more mounting structures, so that not only is the cost increased, but also the overall weight is increased; simultaneously, in single module volume, mounting structure has taken more inner space, causes power battery module, and battery package whole capacity reduces, and battery module sets up more in the battery package, and the space is extravagant just more. In addition, because a plurality of external power connecting pieces are needed to be arranged for power connection, the internal resistance and the cost are increased, and the internal consumption and the cost of the power battery pack in use are improved.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a battery module and car, this battery module has saved the parallelly connected attach fitting copper bar of stack in the battery module to reduce the cost and the weight of module, improved space utilization.

In one aspect of the present invention, the utility model provides a battery module. According to the utility model discloses an embodiment, the battery module includes:

a plurality of battery modules that are stacked, and that include: the stacked body comprises a plurality of stacked electric cores, positive pole lug end parts of the electric cores form positive pole lug areas, negative pole lug end parts of the electric cores form negative pole lug areas, the positive pole lug area of one stacked body and the negative pole lug area of the other stacked body in two adjacent stacked bodies are stacked and welded to form a cascade welding area, the positive poles of the battery modules are located at one end of the battery module, and the negative poles of the battery modules are located at the other end of the battery module;

the battery module comprises a first connecting row, a second connecting row and a plurality of battery modules, wherein the first connecting row is provided with a first slot, and positive pole lugs of the plurality of battery modules positioned at one end of the battery module penetrate through the first slot to be attached to the first connecting row;

and the second connecting row is provided with a second slot, and is positioned at the other end of the battery module, and the negative pole lug of the battery module penetrates through the second slot and is attached to the second connecting row.

According to the battery module of the embodiment of the utility model, a plurality of battery cells are stacked inside the battery module to form a stacked body, the positive pole ear end part of the battery cell in the same stacked body forms a positive pole ear area, the negative pole ear end part of the battery cell in the same stacked body forms a negative pole ear area, and the positive pole ear area of one stacked body in two adjacent stacked bodies is welded with the negative pole ear area of the other stacked body to form a cascade welding area, compared with the mode that two adjacent stacked bodies in the battery module in the existing battery module are connected in series by copper bars, the battery module in the battery module of the application saves connecting accessory copper bars for connecting the stacked bodies in series, thereby reducing the cost and the weight of the battery module, improving the space utilization rate, and simultaneously adopting connecting rows to connect and attach the positive pole ears and the negative pole ears of a plurality of battery modules positioned at the end part of the battery module respectively, the length of the electrode lug at the end part of the battery module is reduced, the use of the connecting piece is reduced, the cost and the weight of the battery module are further reduced, the installation space is saved, the connection stability and the reliability of the connecting piece do not need to be considered, the connection internal resistance is reduced, the internal consumption of the battery module is reduced, and the automobile provided with the battery module has excellent continuous mileage.

In addition, according to the utility model discloses battery module of above-mentioned embodiment can also have following additional technical characterstic:

the utility model discloses an in some embodiments, be located cascade the weld zone be equipped with first structure hole on the anodal utmost point ear, be located cascade the weld zone be equipped with second structure hole on the negative pole utmost point ear, anodal utmost point ear district is equipped with a plurality ofly the first passageway that runs through of first structure hole formation, negative pole utmost point ear district is equipped with a plurality ofly the second that the second structure hole formed runs through the passageway, and cascade the weld zone, first passageway that runs through with the second runs through the passageway and link up and form supplementary linkage channel, be equipped with auxiliary connecting piece in the supplementary linkage channel. This can improve the reliability of the internal connection of the battery module.

In some embodiments of the present invention, the battery module further includes: the protective shell for the first lug is clamped with the upper end and the lower end of the cascade welding area respectively, a first through hole and a first groove are formed in the protective shell for the first lug, and a first threaded hole is formed in the first groove. Therefore, on one hand, the tab protection area is protected, and on the other hand, the subsequent side plates are convenient to quickly position and assemble.

In some embodiments of the present invention, the battery module further includes: the second utmost point ear protective housing, the second utmost point ear protective housing with be located the tip the pile body the anodal ear district or negative pole ear district joint, and be equipped with second through-hole and second recess on the second utmost point ear protective housing, be equipped with the second screw hole in the second recess. Therefore, on one hand, the positive pole ear area is protected, and on the other hand, the rapid positioning and assembly of the subsequent side plate are facilitated.

In some embodiments of the present invention, the battery module further includes: the first side plate and the second side plate are respectively arranged on two side walls of the stacked body along the length direction of the battery module, the positions, corresponding to the first groove and the second groove, of the first side plate and the second side plate are respectively inwards protruded to form a first convex part and a second convex part, the first convex part is embedded in the first groove, a first connecting hole matched with the first threaded hole is formed in the first convex part, the second convex part is embedded in the second groove, a second connecting hole matched with the second threaded hole is formed in the second convex part, and a first opening hole and a second opening hole are respectively formed in the positions, corresponding to the first through hole and the second through hole, of the first side plate and the second side plate; separators provided at upper and lower ends of the stacked body in a length direction of the battery module; the first connecting piece penetrates through the first connecting hole to be matched with the first threaded hole; and the second connecting piece penetrates through the second connecting hole to be matched with the second threaded hole. From this, can realize the rapid Assembly of curb plate, improve battery module's reliability simultaneously.

In some embodiments of the present invention, the first side plate and/or the second side plate are provided with concave-convex reinforcing ribs. Therefore, the expansion force of the battery cell in the module can be effectively resisted.

In some embodiments of the present invention, a buffer plate is provided between the first side plate and the stack and/or between the second side plate and the stack. Therefore, the battery cell protection device can play a role in protecting the battery cell.

The utility model discloses an in some embodiments, adjacent two between the electricity core stack with between the buffer board respectively with first lateral wall with be equipped with the structure between the second lateral wall and glue. This can improve the reliability of the battery module.

In some embodiments of the present invention, the battery module further includes: the battery module comprises a first baffle and a second baffle, wherein the first baffle and the second baffle are arranged oppositely and at intervals, the plurality of battery modules are arranged between the first baffle and the second baffle, and third holes and fourth holes are respectively formed in the positions, corresponding to the first holes and the second holes, of the first baffle and the second baffle; a third connector passing through the third opening, the first opening, and the first through hole; a fourth connector passing through the fourth opening, the second opening, and the second through hole.

In a second aspect of the present invention, the present invention provides a vehicle. According to the utility model discloses an embodiment, the car has foretell battery module. Thus, the automobile has excellent mileage.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery cell in a battery module according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a stacked body in a battery module according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating a partial structure of a battery module in a battery module according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a partial structure of a battery module in a battery module according to still another embodiment of the present invention;

fig. 6 is a schematic view illustrating a partial structure of a battery module in a battery module according to still another embodiment of the present invention;

fig. 7 is a schematic structural view of a battery module in a battery module according to still another embodiment of the present invention;

fig. 8 is a schematic structural view of a first tab protection housing on a battery module in a battery module according to yet another embodiment of the present invention;

fig. 9 is a schematic view illustrating a structure of a battery module in a battery module according to still another embodiment of the present invention;

fig. 10 is a schematic structural view of one end of a battery module according to still another embodiment of the present invention;

fig. 11 is a schematic structural view of the other end of the battery module according to still another embodiment of the present invention;

fig. 12 is a schematic structural view of a battery module according to still another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In a first aspect of the present invention, the utility model provides a battery module. According to the embodiment of the present invention, referring to fig. 1-12, this battery module includes battery module 100, first run-on 200 and second run-on 300 wherein, referring to fig. 1, this battery module includes a plurality of battery modules 100, and a plurality of battery modules 100 range upon range of setting, and a plurality of battery modules 100 is anodal all is located the one end of battery module, a plurality of battery modules 100's negative pole all is located the other end of battery module, battery module 100 includes a plurality of stacks 1 simultaneously, stacks 1 includes a plurality of range upon range of electric core 10, it is preferred that a plurality of electric core 10 bond through structure glue (not shown) and stack. Referring to fig. 2, a positive electrode tab 101 is formed at the positive electrode end of the battery cell 10, a negative electrode tab 102 is formed at the negative electrode end of the battery cell 10, the positive electrode tab 101 is aluminum or aluminum alloy, the negative electrode tab 102 is copper or copper alloy, and the housing of the battery cell 10 is aluminum plastic. And referring to fig. 3, the positive electrode tab 101 end of a plurality of battery cells 10 in the same stacked body 1 forms a positive electrode tab zone 11, and the negative electrode tab 102 end of a plurality of battery cells 10 in the same stacked body 1 forms a negative electrode tab zone 11, and referring to fig. 4, the positive electrode tab zone 11 of one stacked body 1 and the negative electrode tab zone 12 of the other stacked body 1 in two adjacent stacked bodies 1 are welded to form a cascade welding zone 13. From this, compare in two adjacent stacks adoption copper bar carry out the mode of establishing ties among the battery module in current battery module, the battery module in the battery module of this application has saved the connection annex copper bar that the stack establishes ties to reduce the cost and the weight of module, improved space utilization. Specifically, the positive electrode tab region 11 of one stack 1 and the negative electrode tab region 12 of the other stack 1 in two adjacent stacks 1 are welded in a stacking manner mainly by laser welding, and then auxiliary connection is performed by ultrasonic welding.

Further, when two adjacent stacks 1 are welded in cascade, the positive electrode tab 101 of the plurality of battery cells 10 in the stack 1 is bent according to the structure shown in fig. 4, and the end portion of the bent positive electrode tab 101 is stacked to form a positive electrode tab area 11, the negative electrode tab 102 of the plurality of battery cells 10 in the stack 1 is also bent according to the structure shown in fig. 4, and the end portion of the bent negative electrode tab 102 is stacked to form a negative electrode tab area 11, referring to fig. 5, a first structure hole 1011 is provided on the positive electrode tab 101 of the cascade welding area 13, a second structure hole 1021 is provided on the negative electrode tab 102 of the cascade welding area 13, the positive electrode tab area 11 is provided with a first through channel 103 formed by the plurality of first structure holes 1011, the negative electrode tab area 12 is provided with a second through channel 104 formed by the plurality of second structure holes 102, and referring to fig. 6, in the cascade welding area 13, the first through channel 103 on one stack 1 of the two adjacent stacks 1 and the second through channel 104 on the other stack 1 104 form an auxiliary connection channel 105 therethrough, and an auxiliary connection member (not shown) is provided in the auxiliary connection channel 105. Specifically, by arranging the first structure hole 1011 on the positive electrode tab 101 of the cascade welding region 13 and the second structure hole 1021 on the negative electrode tab 102 of the cascade welding region 13, when cascade welding is performed, when the end portions of the positive electrode tabs 101 and the negative electrode tabs 102 of a plurality of battery cells 10 are stacked in the same stack body 1, the first structure holes 1011 are overlapped to form the first through passage 103, and the second structure holes 1011 are overlapped to form the second through passage 104, so that quick positioning when the positive electrode tabs 101 and the negative electrode tabs 102 are stacked is facilitated, and simultaneously when the cascade welding region 13 is formed by stacking and welding the positive electrode tab region 11 of one stack body 1 and the negative electrode tab region 12 of the other stack body 1 in two adjacent stack bodies 1, the first through passage 103 and the second through passage 104 are overlapped to form the auxiliary connecting passage 105, so that quick positioning when the cascade welding region 13 is formed by two adjacent stack bodies 1 is facilitated, and the provision of the auxiliary connection member in the auxiliary connection passage 105 of the cascade land 13 can improve the reliable connection of the adjacent two stacks 1. It should be noted that the specific type of the auxiliary connecting member can be selected by those skilled in the art according to actual needs, as long as reliable connection between two adjacent stacked bodies 1 can be achieved, and the auxiliary connecting member can be a rivet or a bolt, for example.

Further, referring to fig. 7, the battery module 100 further includes a first tab protection housing 14 and a second tab protection housing 15, wherein the first tab protection housing 14 is respectively connected to the upper end and the lower end of the cascade welding region 13 in a snap-fit manner, that is, two first tab protection housings 14 are disposed at the cascade welding region 13, the two first tab protection housings 14 are respectively connected to the cascade tab region 13 from the upper end and the lower end of the battery module 100 in a snap-fit manner, referring to fig. 8, a first through hole 141 and a first groove 142 are disposed on the first tab protection housing 14, a first threaded hole 1421 is disposed in the first groove 142, referring to fig. 7, the second tab protection housing 15 is connected to the positive tab region 11 or the negative tab region 12 of the stack body 1 located at the end, a second through hole 151 and a second groove 152 are disposed on the second tab protection housing 15, and a second threaded hole 1521 is disposed in the second. It should be noted that, a person skilled in the art may select the number of the first through holes 141, the first grooves 142, the second through holes 151, and the second grooves 152 according to actual needs, and preferably, one first through hole 141 and one first groove 142 are provided on the first tab protection housing 14, two second through holes 151 and two second grooves 152 are provided on the second tab protection housing 15, the two second through holes 151 are symmetrically arranged, the two second grooves 152 are also symmetrically arranged, and the first grooves 142 and the second grooves 152 are both circular grooves, so as to guide the installation of subsequent side plates, thereby achieving rapid assembly. Specifically, the first tab protection housing 14 and the second tab protection housing 15 are made of insulating and flame-retardant plastic, such as PP, APS, PC, PA, and PA 66.

Further, referring to fig. 9, the battery module further includes a first side plate 16, a second side plate 17, a partition plate 18, a first connector (not shown), and a second connector (not shown).

Referring to fig. 9, the first side plate 16 and the second side plate 17 are respectively disposed on two side walls of the stack body 1 along the length direction of the battery module 100, and the first protrusion 162 and the second protrusion 172 are respectively formed on the first side plate 16 and the second side plate 17 at positions corresponding to the first groove 142 and the second groove 152, that is, the first protrusion 162 is formed on the first side plate 16 and the second side plate 17 at positions corresponding to the first groove 142, the second protrusion 172 is formed on the first side plate 16 and the second side plate 17 at positions corresponding to the second groove 152, the first protrusion 162 is fitted in the first groove 142, the first protrusion 162 is provided with a first connection hole 1621 matching with the first screw hole 1421, the second protrusion 172 is fitted in the second groove 152, and the second protrusion 172 is provided with a second connection hole 1721 matching with the second screw hole 1521, so that when the first side plate 16 and the second side plate 17 are disposed on two side walls of the stack body 1, the first side plate 162 is fitted in the first groove 142, and the second protrusion 172 is fitted in the second groove Two grooves 152 cooperate to realize the rapid assembly of first curb plate 16 and second curb plate 17, and the position that corresponds first through-hole 141 and second through-hole 151 on first curb plate 16 and the second curb plate 17 forms first trompil 161 and second trompil 171 respectively simultaneously, corresponds first through-hole 141's position on first curb plate 16 and the second curb plate 17 and all forms first trompil 161, corresponds second through-hole 151's position on first curb plate 16 and the second curb plate 17 and all forms second trompil 171. And the first apertures 161 of the plurality of battery modules 100 are penetrated while the second apertures 171 of the plurality of battery modules 100 are penetrated when the plurality of battery modules 100 are sequentially arranged.

Referring to fig. 9, separators 18 are provided at the upper and lower ends of the stack 1 in the lengthwise direction of the battery module 100, first connectors are fitted with the first screw holes 1421 through the first connection holes 1621, and second connectors are fitted with the second screw holes 1521 through the second connection holes 1721, thereby achieving reliable installation of the first and

second side plates

16 and 17. Preferably, the first side plate 16 and/or the second side plate 17 are provided with concave-convex reinforcing ribs (not shown), so that the expansion force of the battery cells in the module can be effectively resisted, and the first connecting piece and the second connecting piece are both bolts. Specifically, the first side plate 16 and the second side plate 17 are made of metal or plastic, the metal is made of aluminum, copper, iron and alloy materials thereof, the metal can be formed by punching, the plastic is thermosetting plastic such as SMC, the plastic has high strength, and the thermosetting material can be formed by injection molding.

Further, referring to fig. 9, a buffer plate 19 is disposed between the first side plate 16 and the stacked body 1 and/or between the second side plate 17 and the stacked body 1, and is used for providing a pre-tightening force for fixing the battery cell 10 during initial assembly of the stacked body 1 and absorbing an expansion force of the battery cell 10 at an end stage of use. It should be noted that, a person skilled in the art can select the material of the buffer plate 21 according to actual needs, and for example, the material may be insulating and flame retardant plastic, such as PP, APS, PC, PA66, and the like. While structural adhesives are provided between the stack 1 and the buffer plate 21, and between the buffer plate 21 and the first and

second side walls

16 and 17, respectively, thereby improving the reliability of the battery module.

Further, referring to fig. 10 and 11, a first slot 21 is formed in the first connection row 200, the positive electrode tabs 101 of the plurality of battery modules 100 located at one end of the battery module pass through the first slot 21 to be attached to the first connection row 200, a second slot 31 is formed in the second connection row 300, and the negative electrode tab 102 of the negative electrode tab area 12 located at the other end of the battery module passes through the second slot 31 to be attached to the second connection row 300. Preferably, the first slots 21 of the first connecting row 200 are parallel to the end-located cells 10 stacked to form the stack 1 of the battery modules 100, and the first slots 21 of the first connecting row 200 correspond to the number of the cells 10 stacked to form the plurality of battery modules 100, that is, one positive tab 101 of each battery module 100 corresponds to one first slot 21, so that the positive tabs 101 at the end of the battery module are respectively inserted through one first slot 21 and then attached to the first connecting row 200 to realize the parallel connection of the positive tabs 101 of the battery module 100 at the end of the battery module, the second slots 31 of the second connecting row 300 are parallel to the end-located cells 10 stacked to form the stack 1 of the battery modules 100, and the second slots 31 of the second connecting row 300 correspond to the number of the cells 10 stacked to form the plurality of battery modules 100, that is, that one negative tab 102 of each battery module 100 corresponds to one second slot 31, thereby will be located the negative pole utmost point ear 101 of battery module tip and pass respectively behind one second fluting 31 and laminate with second run-on 300 and can realize the parallelly connected of the negative pole utmost point ear 102 of a plurality of battery modules 100 of battery module tip to the positive pole utmost point ear 101 that is located battery module tip battery module 100 carries out laser-beam welding after laminating with first run-on 200 in order to improve the reliability that positive pole utmost point ear 101 is connected, and the negative pole utmost point ear 102 that is located battery module tip battery module 100 simultaneously carries out laser-beam welding after laminating with second run-on 300 in order to improve the reliability that negative pole utmost point ear 102 is connected.

Further, referring to fig. 12, the battery module further includes: a first barrier 400, a second barrier 500, a third connector 600, and a fourth connector 700.

Referring to fig. 12, the first barrier 400 and the second barrier 500 are disposed opposite to each other at intervals, the plurality of battery modules 100 are disposed between the first barrier 400 and the second barrier 500, the first barrier 400 and the second barrier 500 are respectively provided with a third opening 401 and a fourth opening 501 at positions corresponding to the first opening 161 and the second opening 171, that is, the first barrier 400 and the second barrier 500 are both provided with a third opening 401 at positions corresponding to the first opening 161, and the first barrier 400 and the second barrier 500 are both provided with a fourth opening 501 at positions corresponding to the second opening 171.

The third connecting member 600 passes through the third opening 401, the first opening 161 and the first through hole 141, and the fourth connecting member 700 passes through the fourth opening 501, the second opening 171 and the second through hole 151, so that the plurality of battery modules 100 can be fixed by using the third connecting member 600 and the fourth connecting member 700. Preferably, the third connector 600 and the fourth connector 700 each include a bolt 51 and a nut 52, taking the first baffle 400 close to the first side plate 16 of the plurality of battery modules 100 and the second baffle 500 close to the second side plate 17 of the plurality of battery modules 100 as an example, the bolt 51 sequentially passes through the third opening 401 on the first baffle 400, the first opening 161 on the first side plate 16, the first through hole 141 on the first tab protecting housing 14, the first opening 161 on the second side plate 17 and the third opening 401 on the second baffle 500, and the nut 52 is disposed on a side of the second baffle 500 away from the first baffle 400 and is locked with the bolt 51 in a matching manner; the bolt 51 passes through the fourth hole 501 on the first baffle 400, the second hole 171 on the first side plate 16, the second through hole 151 on the second tab protective shell 15, the second hole 171 on the second side plate 17 and the fourth hole 501 on the second baffle 500, and the nut 52 is arranged on one side of the second baffle 500 far away from the first baffle 400 and is matched and locked with the bolt 51.

In a second aspect of the present invention, the present invention provides a vehicle. According to the utility model discloses an embodiment, the car has foretell battery module. Preferably, the vehicle is a new energy vehicle. Thus, the automobile has excellent mileage. It should be noted that the features and advantages described above for the battery module are also applicable to the vehicle, and are not described herein again.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery module, comprising:

2. The battery module as set forth in claim 1, wherein a first structural hole is formed in the positive electrode tab located in the cascade weld zone, a second structural hole is formed in the negative electrode tab located in the cascade weld zone, the positive electrode tab zone is provided with a plurality of first through passages formed by the first structural hole, the negative electrode tab zone is provided with a plurality of second through passages formed by the second structural hole, and the first through passages and the second through passages are communicated to form an auxiliary connection passage in the cascade weld zone, and an auxiliary connection member is provided in the auxiliary connection passage.

3. The battery module according to claim 1 or 2, further comprising: the protective shell for the first lug is clamped with the upper end and the lower end of the cascade welding area respectively, a first through hole and a first groove are formed in the protective shell for the first lug, and a first threaded hole is formed in the first groove.

4. The battery module according to claim 3, further comprising: the second utmost point ear protective housing, the second utmost point ear protective housing with be located the tip the pile body the anodal ear district or negative pole ear district joint, and be equipped with second through-hole and second recess on the second utmost point ear protective housing, be equipped with the second screw hole in the second recess.

5. The battery module according to claim 4, further comprising:

the first side plate and the second side plate are respectively arranged on two side walls of the stacked body along the length direction of the battery module, the positions, corresponding to the first groove and the second groove, of the first side plate and the second side plate are respectively inwards protruded to form a first convex part and a second convex part, the first convex part is embedded in the first groove, a first connecting hole matched with the first threaded hole is formed in the first convex part, the second convex part is embedded in the second groove, a second connecting hole matched with the second threaded hole is formed in the second convex part, and a first opening hole and a second opening hole are respectively formed in the positions, corresponding to the first through hole and the second through hole, of the first side plate and the second side plate;

separators provided at upper and lower ends of the stacked body in a length direction of the battery module;

the first connecting piece penetrates through the first connecting hole to be matched with the first threaded hole;

and the second connecting piece penetrates through the second connecting hole to be matched with the second threaded hole.

6. The battery module according to claim 5, wherein the first side plate and/or the second side plate is provided with a concave-convex reinforcing rib.

7. The battery module according to claim 5, further comprising:

the battery module comprises a first baffle and a second baffle, wherein the first baffle and the second baffle are arranged oppositely and at intervals, the plurality of battery modules are arranged between the first baffle and the second baffle, and third holes and fourth holes are respectively formed in the positions, corresponding to the first holes and the second holes, of the first baffle and the second baffle;

a third connector passing through the third opening, the first opening, and the first through hole;

a fourth connector passing through the fourth opening, the second opening, and the second through hole.

8. An automobile having the battery module according to any one of claims 1 to 7.