CN218602653U - Battery module protector's base, protector, end plate, battery package - Google Patents

Abstract

The utility model relates to a base, a protective device, an end plate and a battery pack of a battery module protective device, wherein the base is used for being matched with a protective cover to form the protective device which can insulate and protect an output electrode of a battery module; the output electrode of the battery module and the base can be penetrated by a fixing piece; the base comprises a cover matching seat, a fixed matching piece is arranged in the cover matching seat, and the fixed matching piece is limited by the cover matching seat in the horizontal direction and can move upwards relative to the cover matching seat; the fixed matching piece is provided with a screw hole for being in threaded connection with the fixing piece; the fixing piece is abutted to the output electrode of the battery module, penetrates through the fixing matching piece and rotates along the axial direction of the fixing piece at a fixed height, the fixing matching piece can exert acting force on the cover matching seat by virtue of the threaded connection relation between the fixing piece and the fixing piece, and moves upwards relative to the cover matching seat under the action of the reaction force exerted by the cover matching seat.

Description

Base, protector, end plate, battery package of battery module protector

Technical Field

The utility model relates to a battery package preparation field, concretely relates to battery module protector's base, protector, end plate, battery package.

Background

The minimum unit in the power battery system is an electric core, a plurality of electric cores can form a battery module, and a battery pack can be formed by the plurality of battery modules.

A battery module generally includes a plurality of current-conducting bars, a plurality of electric cores and a pair of end plates, wherein the end plates are located outside the electric cores at the end portions of the battery module, the current-conducting bars made of metal are welded on positive and negative poles of the electric cores, and the electric cores are electrically connected by virtue of the current-conducting bars; on the electric core that is closest to the end plate, be equipped with the water conservancy diversion row of protruding this electric core of stretching out at least, the partial structure of protruding electric core of stretching out of this water conservancy diversion row extends the end plate position to be connected in order to form the output pole of this battery module with the one end electricity of bar form copper bar, simultaneously, the other end of this strip copper bar is arranged in the water conservancy diversion row electricity with among other battery modules and is connected, and then founds the electric connection relation between the battery module.

In the related art, because the guide bar and the copper bar are both conductors and belong to high-voltage devices, a protective device mainly made of insulating materials (such as plastics) is arranged at the joint of the guide bar and the copper bar, the protective device can be covered on the outer side of the joint of the guide bar and the copper bar to carry out insulation protection on the joint, and a bearing platform can be provided for the joint of the guide bar and the copper bar; after the protection device is assembled with the flow guide row and the copper bar, the flow guide row and the copper bar penetrate through the protection device and are provided with a partial structure extending into the protection device and a partial structure extending out of the protection device.

When the protective cover is connected with the base, the protective cover covers the outer side of the connection position of the flow guide row and the copper bar, and the base provides a bearing platform for the connection position of the flow guide row and the copper bar; the steps of assembling the guide row, the copper bar and the base generally include: extending the diversion row to the base and attaching the diversion row to the base; stacking the copper bar on the part of the guide bar; the fixing part such as a bolt sequentially penetrates into the copper bar, the flow guide bar and the fixing matching piece from top to bottom and is screwed up, the fixing part is in threaded connection with the copper bar, the flow guide bar and the fixing matching piece at different parts of the fixing part, and therefore the connection position of the copper bar and the flow guide bar can be located in the protection device and covered by the protection device. In the assembling steps, the flow guide row is attached to the base, so that the flow guide row is prevented from being deformed unacceptably in the screwing process of the fixing piece; and the fixing piece is screwed up to ensure that the copper bar is tightly and stably connected with the flow guide bar, so that the reliability of the assembly connection between the copper bar and the flow guide bar is ensured, and the fixing piece is an important key point in the battery pack assembling process.

Based on this, the disadvantage of this arrangement is that, since the fixed matching part is usually fixed on the base seat by using a method such as insert molding, the position of the fixed matching part in the base seat is fixed, when the flow guide row cannot be well fitted with the fixed matching part due to the manufacturing tolerance and the assembly accumulated tolerance of the parts, this solution easily causes difficulty in assembling the flow guide row and the copper bar, and affects the reliability of the assembly connection between the flow guide row and the copper bar.

As described in more detail above, in the related art, the structure of the portion of the flow guide row protruding out of the electrical core is usually short, when the flow guide row can extend onto the base but cannot be well attached to the base, but still has a gap of millimeter (e.g. 1-3 mm) between them, if the assembly steps of the copper bar, the flow guide row and the base are performed as usual, in order to screw the fixing member, and meanwhile, because the portion of the flow guide row protruding out of the electrical core is short, a worker needs to exert a greater force to complete the operation, so that the copper bar and the flow guide row are pressed down and deformed until the flow guide row is attached to the upper surface of the fixing mating member, which undoubtedly increases the difficulty in assembly; secondly, after the action of screwing up the mounting is accomplished, for the water conservancy diversion row, because the part of protruding electric core that stretches out of water conservancy diversion row is shorter, and it is pressed down and takes place to buckle from the unsettled state, consequently this part of water conservancy diversion row will be in the state that has great internal stress for a long time, and this kind of state can influence the assembly and connection reliability of copper bar and water conservancy diversion row.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a battery module protector's base, protector, end plate, battery package are used for upwards floating in the base with mounting complex fixed fitting piece in this base to guarantee that unacceptable deformation can not take place for the water conservancy diversion row when screwing up the mounting.

The utility model provides a base of a battery module protective device, which is used for being matched with a protective cover to form the protective device capable of insulating and protecting the output electrode of the battery module; the output electrode of the battery module and the base can be penetrated by a fixing piece; the base comprises a cover matching seat, a fixed matching piece is arranged in the cover matching seat, and the fixed matching piece is limited by the cover matching seat in the horizontal direction and can move upwards relative to the cover matching seat; the fixed matching piece is provided with a screwed hole for being in threaded connection with the fixing piece; the fixing piece supports against the output electrode of the battery module, the fixing piece penetrates into the fixed matching piece and rotates along the axial direction of the fixing piece at the fixed height, the fixed matching piece can exert acting force on the cover matching seat by means of the threaded connection relation between the fixed matching piece and the fixing piece, and the fixed matching piece moves upwards relative to the cover matching seat under the action of the reacting force exerted by the cover matching seat.

Optionally, the screw holes are arranged along the vertical direction, and the cover mating seat is provided with an accommodating groove capable of accommodating the cover mating seat; the base further comprises a limiting piece which is arranged on the cover matching seat and can be clamped with the fixed matching piece to limit the upward movement stroke of the fixed matching piece; the battery module output electrode comprises a flow guide row, and the upward movable stroke of the fixed matching piece is configured to enable the fixed matching piece to abut against the flow guide row.

Optionally, the holding tank includes the groove body, certainly the inner wall of groove body court the protruding several protruding muscle that are formed with of center of groove body, interval each other between the protruding muscle, several protruding muscle enclose into can be spacing in the horizontal direction the structure of fixed fitting spare.

Optionally, the locating part includes interconnect's round pin handle and pin pole, the pin pole extends the setting along the horizontal direction, be equipped with the intercommunication on the lid cooperation seat the cooperation entry of holding tank with be located the jack of fixed fitting piece one side, the last level that is equipped with of fixed fitting piece runs through its slot hole, the round pin handle can with the cooperation entry cooperation, the pin pole can warp the cooperation entry stretches into in the slot hole and the card is gone into the jack, makes the fixed fitting piece can be relative lid cooperation seat up-and-down motion, unable by deviate from in the lid cooperation seat.

Alternatively, the receiving groove may form an opening on the cover fitting seat, the opening being used for placing the fixing fitting piece into the cover fitting seat along a horizontal direction; the fixed matching piece comprises at least two bolt connection units, a matching groove which is sunken relative to the bolt connection units is arranged between the bolt connection units, the bolt connection holes are arranged on the bolt connection units, matching holes which can be penetrated by the bolt connection units are arranged on the cover matching seat, the matching holes are arranged along the vertical direction and communicated with the accommodating groove, the limiting piece is arranged between the matching holes, and the limiting piece can be matched with the matching groove; the matching hole with the locating part is in coordination with each other, and the fixed matching piece can be clamped in the horizontal direction.

Optionally, the locking device further comprises a plug member, wherein the plug member comprises a plate-shaped part and a closing part which are connected with each other, the plate-shaped part is positioned below the fixing fitting piece, and the closing part can close an opening, in the cover fitting seat, for the fixing fitting piece to be inserted.

Optionally, the receiving groove has a convex cross section, and the fixed fitting piece includes a body and flanges protruding outward from the front and rear surfaces of the lower part of the body; a third gap is formed between the bottom wall of the matching groove and the bottom surface of the limiting part, a fourth gap is formed between the top surface of the flange and the accommodating groove, and the smaller value of the third gap and the fourth gap in the vertical direction is the stroke of the fixed matching part which can move upwards.

The utility model also provides a protector, include as above arbitrary the base of battery module protector.

The utility model also provides an end plate, with above-mentioned arbitrary base of battery module protector even as an organic whole.

The utility model also provides a battery package, include as above battery module protector's base.

To sum up, by making the fixed mating member in the base receive the spacing in the horizontal direction, make the fixed mating member move upwards at the same time, the utility model discloses can provide a base of battery module protector, this base includes the cover mating seat and sets up the fixed mating member in the cover mating seat, on the premise that the water conservancy diversion row has the clearance because of the tolerance between cover mating seat and the cover mating seat, this cover mating seat is when assembling with mounting and water conservancy diversion row, the fixed mating member can float upwards and offset with the water conservancy diversion row relative to this cover mating seat, can not make the water conservancy diversion row because the operation of screwing up the mounting deforms, and then produce the assembly stress that can't be accepted; the base can ensure the reliability of the assembly connection between the copper bar and the flow guide bar.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a battery module and a protection device and a copper bar thereon according to an embodiment of the present invention.

Fig. 2 is a schematic view of a protective cover according to an embodiment of the present invention.

Fig. 3 is a schematic view of a middle guide row, a fixing member, an end plate and an upper base thereof according to an embodiment of the present invention.

Fig. 4 is a partial schematic structural view of an end plate according to an embodiment of the present invention.

Fig. 5 is a schematic view of a fixing fitting in a first embodiment of the present invention before ascending.

Fig. 6 is a schematic view of a fixing fitting piece after going upward according to a first embodiment of the present invention.

Fig. 7 is a schematic view of a fixing member, a cover fitting seat and a limiting member according to an embodiment of the present invention after fitting.

Fig. 8 is a schematic view illustrating a joint between a limiting member and a cover fitting seat according to an embodiment of the present invention.

Fig. 9 is a schematic view of a plug, a fixing engagement member, and a cap engagement base according to a second embodiment of the present invention.

Fig. 10 is a schematic view illustrating the second embodiment of the present invention, wherein the fixing member is inserted into the cover fitting seat and then inserted into the fitting hole.

Fig. 11 is a schematic view of a plug and a cap engagement seat according to a second embodiment of the present invention.

Fig. 12 is a schematic view of the stopper member of the second embodiment of the present invention engaged with the cap engagement seat.

Fig. 13 is a plan view of the plug member, the cap fitting seat and the fixing fitting member according to the second embodiment of the present invention after they are assembled.

Fig. 14 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A according tobase:Sub>A second embodiment of the present invention.

Fig. 15 is a B-B sectional view of the second embodiment of the present invention.

Description of the reference numerals

I, a flow guide bar, II, an electric core and III, a copper bar;

1-end plate, 11-embedded groove, 2-protective cover, 21-first main body, 22-side wall, 221-clamping part;

3-base, 31-cover mating seat, 310-snap edge, 311-receiving groove, 3111-groove body, 3112-rib, 3113-mating hole, 312-receptacle, 313-mating entrance, 3131-profile turn, 32-cover mating part, 320-support plate, 33-plug, 331-plate part, 332-closure part, 3321-snap part;

4-fixing piece, 5-fixing matching piece, 50-screwing hole, 51-long hole, 52-body, 521-matching groove, 522-screwing unit and 53-flange;

6-a limiting part, 60-a pin rod, 61-a pin handle and 611-a buckling part;

7-first gap, 8-second gap, 9-third gap, 10-fourth gap.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example one

As shown in fig. 1 and fig. 2, the present embodiment provides a battery pack, in which a plurality of substantially rectangular battery modules are disposed, each battery module includes a current guiding bar I, a cell II and an end plate 1, where the cell II is located at an end of the battery module, and the end plate 1 is located at an outer side of the cell II and is a plastic product obtained by injection molding; on the lower part of the battery cell II, the flow guide row I is provided with a partial structure protruding to the right side of the battery cell II, the partial structure is used for being electrically connected with one end of the strip-shaped copper bar III to form an output electrode of the battery module, the copper bar III extends along the left-right direction, and the other end of the copper bar III is used for being electrically connected with another battery module, so that the electrical connection relation among the battery modules is constructed. Use end plate 1's the side surface of keeping away from electric core II as its surface, the battery package still includes and corresponds the protector that sets up with end plate 1, and this protector includes visor 2 and base 3, and wherein base 3 includes and cooperates seat 31 and lid cooperation portion 32 through the lid of the integrated into one piece that moulds plastics with end plate 1, and lid cooperation portion 32 is located the top of lid cooperation seat 31, and lid cooperation seat 31 extends the formation from the different positions at end plate 1 surface middle part right respectively with lid cooperation portion 32.

Further, the front end middle portion and the rear end middle portion of the cover fitting seat 31 in the present embodiment are recessed with respect to the front end upper portion and the rear end upper portion thereof, respectively, as shown in fig. 3, so that the snap edges 310 extending in the left-right direction are formed on the front end upper portion and the rear end upper portion of the cover fitting seat 31; correspondingly, the protective cover 2 comprises a first main body 21 and side walls 22 shown in fig. 2, the first main body 21 is a horizontally arranged convex plate, the two side walls 22 are respectively formed by downwards turning from the front and rear end edges of the first main body 21, and the side walls 22 are used for shielding the front and rear sides of the copper bar III, so that the protective device does not have a front and rear opening, thereby ensuring the insulation protection performance. In this embodiment, the fastening portion 221 is substantially shaped like a Chinese character 'v 20058', the hook-shaped fastening head of the fastening portion 221 protrudes out of the lower edge of the side wall 22, and the fastening portions 221 on the side walls 22 on both sides are oppositely arranged and can be respectively fastened and tightly fitted with the fastening edges 310 on the front and rear ends of the cover fitting seat 31, so as to ensure that the protection cover 2 cannot move upwards and make the protection cover 2 difficult to move horizontally. Further, the cover engaging portion 32 includes a supporting plate 320 formed by protruding from the outer surface of the end plate 1 to the right, the left end of the first body 21 having a convex shape is a smaller end, and the left end of the first body 21 can extend onto the supporting plate 320 and overlap the supporting plate 320, so that the first protective cover 2 is supported by the cover engaging portion 32 and cannot move downward. Optionally, a protrusion structure or a snap structure (not shown) may be further disposed on the first protection cover 2, and a corresponding through hole (not shown) is further disposed on the supporting plate 320, so that the protrusion structure or the snap structure can be snapped with the through hole, thereby more reliably realizing the limit of the first protection cover 2 in the horizontal direction.

Referring to fig. 1 and fig. 3, the end plate 1 of the present embodiment is provided with an insertion groove 11 for inserting the flow guiding row I, the insertion groove 11 is located at the left side of the cover matching seat 31 and the lower side of the cover matching portion 32, and has a U-shaped cross section with an upward opening and leads to the space between the cover matching seat 31 and the cover matching portion 32; correspondingly, the flow guide row I turns backwards from the right part of the front surface of the battery cell II into the groove 11, finally extends upwards to reach between the cover matching part 32 and the cover matching seat 31, and then extends rightwards to reach the direction above the cover matching seat 31; furthermore, a fixing matching piece 5 for being in threaded connection with a fixing piece 4 (a bolt in the embodiment) is placed inside the cover matching seat 31, and the fixing piece 4 is used for sequentially penetrating into the copper bar III, the flow guide bar I and the fixing matching piece 5 so as to fix the copper bar III and the flow guide bar I together; the fixed matching piece 4, the flow guide row I, the end plate 1 and the copper bar III are sequentially assembled in the following sequence:

s1: the fixing fitting 5 is put into the cover fitting seat 31;

s2: the end plate 1 integrated with the base 3 is arranged on the outer side of a battery cell II positioned at the most end part of the battery module;

s3: the flow guide bar I is matched with the placing groove 11 and is welded with the battery cell II;

s4: one end of the copper bar III covers the part of the guide row I extending above the cover matching seat 31.

So, follow-up make mounting 4 penetrate copper bar III, water conservancy diversion row I and fixed fitting piece 5 in proper order again, make base 3 and have the visor 2 of corresponding structure can dismantle the connection, can form the protector that can draw forth copper bar III right.

Specifically, the fixing engagement member 5 in this embodiment is a rectangular block member separately provided from the cover engagement seat 31, the length direction of the fixing engagement member 5 is arranged along the front-rear direction, and the front and rear ends thereof are respectively provided with a screw hole 50 penetrating through the fixing member 4 along the up-down direction, so as to realize the screw connection with the fixing member. Correspondingly, the cover matching seat 31 is provided with a receiving groove 311 formed by recessing downwards from the upper surface of the cover matching seat, the receiving groove 311 comprises a groove body 3111, the groove body 3111 can receive the fixed matching piece 5 and is slightly higher than the fixed matching piece 5; as shown in fig. 4, the groove body 3111 is provided with a plurality of ribs 3112 formed by protruding inward from the inner wall thereof, and the ribs 3112 can enclose a space into which the fixing engagement member 5 can be inserted, so that the fixing engagement member 5 is horizontally limited in the cover engagement seat 31 but can move upward.

Based on this, when the flow guide row I can extend onto the cover matching seat 31 due to the manufacturing tolerance and the assembly accumulated tolerance of the component, but cannot be well attached to the upper surface of the cover matching seat 31, for example, when a first gap 7 shown in fig. 5 exists between the flow guide row I and the upper surface of the cover matching seat 31, the fixing matching member 5 is first placed in the groove body 3111, the end plate 1 and the flow guide row I are assembled, the flow guide row I extends onto the cover matching seat 31, the copper bar III is then covered on the flow guide row I, and the fixing member 4 is sequentially screwed into the copper bar III, the flow guide row I and the fixing matching member 5 from top to bottom, when the fixing member 4 is about to be screwed, the fixing member 4 has a portion extending into the fixing matching member 5 and a portion exposed between the fixing matching member 5 and the flow guide row I; thereafter, since the fixing fitting member 5 can float upward, and the guide row I has a certain strength as a metal product itself, the fixing member 4 is continuously screwed (the fixing member 4 at this time is equivalent to rotate along the axial direction thereof under the condition of a fixed height), before the guide row I deforms, a part of the fixing member 4 which has been inserted into the fixing fitting member 5 before will apply a force to the fixing fitting member 5, so that an acting force and a reacting force are generated between the fixing fitting member 5 and the convex rib 3112, and the fixing fitting member 5 moves upward, and abuts against the guide row I as shown in fig. 6, thereby preventing the guide row I from deforming and simultaneously completing the operation of screwing the fixing member 4.

To describe this in more detail, since the external thread on the fixing element 4 is engaged with the internal thread in the threaded hole 50, when the fixing element 4 is screwed, the torsion force is transmitted to the fixing mating element 5 through (the part of the structure of) the fixing element 4 that is already in threaded connection with the fixing mating element 5, and then transmitted to the cover mating seat 31 that limits the fixing mating element 5 in the horizontal direction, so that an acting force and a reacting force are generated between the fixing mating element 5 and the cover mating seat 31, and the fixing mating element 5 moves upward under the action of the reacting force, and abuts against the flow guiding row I as shown in fig. 6, thereby completing the screwing operation of the fixing element 4, and making the flow guiding row I not generate unacceptable deformation during the operation, and the flow guiding row I is stably connected with the copper bar III by means of the fixing element 4; thereafter, the fastening fitting 5 has a fixed height in the up-down direction by virtue of its threaded connection with the fastening element 4, which corresponds to "hanging" below the flow guide row I. It should be noted that, because the flow guide row I has a certain strength, the arrangement of the fixing fitting piece 5 'suspended' below the flow guide row I does not cause the flow guide row I to deform significantly, and does not cause the inside of the flow guide row I to have a large stress, which affects the assembly and connection reliability of the flow guide row I and the copper bar III; on the contrary, because the fixed matching piece 5 floats upwards and absorbs the tolerance formed by manufacturing and assembling the guide row I, the guide row I cannot deform in the assembling process, and the whole service life and the assembling reliability of the guide row I and the copper bar III are ensured.

It should be noted that the reason why the rib 3112 is provided to engage with the fixed fitting piece 5 is that, compared with the solution that the fixed fitting piece 5 needs to engage with the inner wall of the whole groove body 3111, the provision of the rib 3112 reduces the portion of the cover engaging seat 31 that needs to engage with the fixed fitting piece 5, which can relax the production requirement of the base 3 to some extent and reduce the number of injection molding defective products. However, it is needless to say that a person skilled in the art may choose not to provide the rib 3112 according to his or her needs, but directly engage the fixed engaging member 5 with the inner wall of the groove body 3111.

Further, referring back to fig. 3 and 4, before the assembly of the fixed fitting piece 5 with the copper bar III and the flow guiding bar I, since the fixed fitting piece 5 needs to be placed in the cover fitting seat 31 first, at this time, in order to ensure that the fixed fitting piece 5 does not fall out of the receiving groove 311 during transportation or transportation, the fixed fitting piece 5 in this embodiment is provided with a long hole 51 penetrating through it in the left-right direction, the right middle position of the cover fitting seat 31 is provided with a fitting inlet 313 leading to the receiving groove 311, and the left middle position of the cover fitting seat 31 is provided with an insertion hole 312 arranged in the left-right direction; correspondingly, the base 3 further comprises a limiting member 6, the limiting member 6 comprises a pin rod 60 and a pin handle 61 which are integrally formed, wherein the pin handle 61 is located at the right side of the pin rod 60, the pin rod 60 extends from the pin handle 61 to the left along the horizontal direction, the pin handle 61 can be matched with the matching inlet 313, and the pin rod 60 can sequentially penetrate into the long hole 51 and the insertion hole 312 from the right to the left, so that the upward movement stroke of the fixing matching member 5 is limited, and the fixing matching member 5 cannot fall out of the accommodating groove 311.

More specifically, the pin rod 60 and the insertion hole 312 have a circular cross section, the long hole 51 is a long hole having a width smaller than that of the pin shank 61, the pin rod 60 is engaged with the long hole 51 in the front-rear direction, and the pin rod 60 is interference-fitted with the insertion hole 312 to fix the stopper 6 to the cover fitting seat 31. As shown in fig. 5, when the fixing engagement member 5 is placed in the receiving groove 311 and naturally contacts the bottom wall of the groove body 3111 by gravity, the pin lever 60 is located at the uppermost end of the long hole 51 and contacts the upper edge of the long hole 51; as shown in fig. 6, when the fixed fitting 5 finishes ascending, the pin 60 is spaced from both the upper and lower edges of the long hole 51.

Referring to fig. 7 and 8, the pin handle 61 of the present embodiment further has a buckling portion 611 formed by protruding outward from the side surface of the pin handle 61, and correspondingly, an L-shaped profile turn 3131 is disposed on the area of the mating inlet 313 bordering on the receiving groove 311, and the buckling portion 611 can be buckled with the profile turn 3131, so as to further ensure the connection reliability between the pin handle 61 and the cover mating seat 31.

Alternatively, the base 3 may be provided separately from the end plate 1, and when the base 3 including the fixing fitting member 5 is provided separately from the end plate 1, the specific form of the cover fitting seat 31 may be flexibly changed by those skilled in the art as needed, and in the same way, whether the cover fitting portion 32 needs to be provided or not may also be flexibly selected by those skilled in the art.

To sum up, the utility model provides an in the battery package to fixed fitting piece 5 has cooperated with holding tank 311 and locating part 6 as the prerequisite, and protector, copper bar III and water conservancy diversion row I's assembly step can include:

s1: one end of the copper bar III is covered on the flow guide bar I on the cover matching seat 31;

s2: driving the fixing piece 4 into the copper bar III, the flow guide bar I and the screw hole 50 on the fixed matching piece 5 in sequence;

s3: the fixing 4 is tightened.

Example two

As shown in fig. 9 and fig. 10, the present embodiment is different from the first embodiment in that the forms of the receiving groove 311, the limiting member 6 and the fixing engagement element 5 are changed, and the base 3 further comprises a plug member 33, wherein the plug member 33 is required to be inserted into the receiving groove 311 after the fixing engagement element 5 is inserted into the receiving groove 311 during the assembly process of the plug member 33, and can prevent the fixing engagement element 5 from being removed from the cover engagement seat 31 after the fixing engagement element 5 is inserted into the receiving groove 311.

Specifically, the fixing fitting 5 in this embodiment includes a rectangular parallelepiped body 52, the aforementioned screw holes 50 are provided on the body 52, and flanges 53 protruding outward are provided on the left and right surfaces of the lower portion of the body 52, respectively, so that the entire fixing fitting 5 has a cross section in the shape of a letter of Chinese character 'tu'; in addition, a U-shaped engagement groove 521 penetrating the fixed mating member 5 in the left-right direction is further provided between the two screw holes 50 on the fixed mating member 5, the engagement groove 521 is formed by being recessed downward from the upper surface of the fixed mating member 5, and the upper portion of the fixed mating member 5 is divided into two block-shaped screw units 522 arranged at intervals, so that the screw holes 50 are arranged on the screw units 522 in a one-to-one correspondence.

In view of the above, the receiving groove 311 in this embodiment is formed by being recessed rearward from the middle of the front surface of the cover mating seat 31, and has a convex cross section to form a convex front opening at the front end of the cover mating seat 31; the receiving groove 311 can receive the fixing fitting piece 5, has a height greater than that of the fixing fitting piece 5, and allows the fixing fitting piece 5 to be inserted from front to back; when the fixing fitting piece 5 is placed in the receiving groove 311, the fixing fitting piece 5 has a margin of upward movement, but has no margin of left-right movement; in other words, the fixing engagement piece 5 is engaged with the receiving groove 311 in the left-right direction.

Two fitting holes 3113 communicating with the receiving groove 311 are formed on the upper surface of the cover fitting portion 32 by being recessed downward from the surface, and the fitting holes 3113 allow the screw connection unit 522 to pass therethrough, so that the screw connection hole 50 can be exposed out of the cover fitting seat 31 and the fixing fitting 5 can move upward; meanwhile, the fitting holes 3113 are spaced from each other, and the spacing forms a beam-shaped limiting member 6 extending left and right on the cover fitting seat 31, and the limiting member 6 can be engaged with the fitting groove 521 in the front-rear direction, so that the fixing fitting member 5 can simultaneously extend into the fitting hole 3113 when engaged with itself; the limiting piece 6 is cooperated with the matching hole 3113 to limit the fixed matching piece 5 in the horizontal direction; further, the height of the fitting groove 521 in the up-down direction is larger than the height of the stopper 6 in the up-down direction. Therefore, the fixing and matching member 5 is placed into the receiving groove 311 from front to back and lifted up to a certain height, so that the matching groove 521 is engaged with the limiting member 6, and the fixing and matching member 5 is inserted into the matching hole 3113. At this time, there is a distance between the lower surface of the body 52 and the bottom wall of the receiving groove 311 so that the aforementioned stopper member 33 can be put into the cover fitting seat 31 after the fixing fitting member 5.

In view of the above, the plug member 33 of the present embodiment is substantially L-shaped, and includes a plate-shaped portion 331 extending horizontally and a closing portion 332 extending upward from the front end of the plate-shaped portion 331; more specifically, the plate-shaped portion 331 of the plug 33 can be inserted into the receiving slot 311 and located below the fixing engagement element 5, the outer contour of the closing portion 332 of the plug 33 is a contour of the outer contour of the receiving slot 311, and the closing portion 332 can block the front opening of the cover engagement seat 31 to prevent the fixing engagement element 5 from coming off during transportation or the like after being inserted into the receiving slot 311. Further, the upper end of the closing portion 332 is further provided with a catching portion 3321 as shown in fig. 11, and the catching portion 3321 can catch with the front edge of the fitting hole 3113 at the front end of the cover fitting seat 31 as shown in fig. 12 to fix the closing portion 332 to the cover fitting seat 31.

Referring to fig. 13 and 14, after the fixing engagement element 5 and the plug member 33 are sequentially inserted into the receiving slot 311, the fixing engagement element 5 is locked with the cover engagement seat 31 in the horizontal direction due to the limitation of the receiving slot 311 and the limiting member 6, and meanwhile, by controlling the locking depth of the fixing engagement element 5 and the limiting member 6, a third gap 9 is formed between the bottom wall of the second gap 8 between the fixing engagement element 5 and the plate-shaped portion 331 of the plug member 33 and the limiting member 6, and a fourth gap 10 is formed between the upper surface of the flange 53 and the receiving slot 311 as shown in fig. 15.

In this embodiment, the existence of the second gap 8 means that when the fixing fitting element 5 is lifted, the height of the fixing fitting element 5 lifted is greater than the thickness of the plate-shaped portion 331, which can facilitate the plate-shaped portion 331 to be easily inserted into the receiving groove 311; the presence of the third gap 9 and the fourth gap 10 means that the fixing fitting member 5 has an upward floating margin in the cover fitting seat 31, and the upward floating margin of the fixing fitting member 5 is determined by one of the third gap 9 and the fourth gap 10, which is smaller in length in the up-down direction. Based on this, the fixing matching part 5 is firstly placed into the cover matching seat 31 and the fixing matching part 5 is lifted properly, so that the fixing matching part 5 is clamped with the matching hole 3113 and the limiting part 6, and then the plug part 33 is placed, so that the fixing matching part 5 can be ensured not to fall off the cover matching seat 31 in the transportation process; afterwards, make mounting 4 penetrate copper bar III, water conservancy diversion row I and fitting piece 5 in proper order, twist and move mounting 4 to a certain extent, fitting piece 5 can upwards float.

In summary, by making the fixing fitting piece 5 in the base 3 limited in the horizontal direction and making the fixing fitting piece 5 capable of moving upwards at the same time, the utility model provides a base 3 of a battery module protection device, the base 3 comprises a cover fitting seat 31 and the fixing fitting piece 5 arranged in the cover fitting seat 31, on the premise that the guide row I has a gap between the cover fitting seat 31 and the fixing member 4 due to tolerance, when the cover fitting seat 31 is assembled with the fixing member 4 and the guide row I, the fixing fitting piece 5 can float upwards relative to the cover fitting seat 31 and abut against the guide row I, and the guide row I cannot be deformed due to the operation of screwing the fixing member 4, thereby generating unacceptable assembly stress; the base 3 can ensure the reliability of the assembly connection between the copper bar III and the flow guide bar I. It should be noted that the base 3 is particularly suitable for being disposed in a power battery pack and an energy storage battery box.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A base of a battery module protection device is used for being matched with a protective cover (2) to form the protection device capable of insulating and protecting an output electrode of a battery module; the output electrode of the battery module and the base (3) can be penetrated by a fixing piece (4); the base (3) comprises a cover matching seat (31), a fixed matching piece (5) is arranged in the cover matching seat (31), and the fixed matching piece (5) is limited by the cover matching seat (31) in the horizontal direction and can move upwards relative to the cover matching seat (31); the fixed mating piece (5) is provided with a screwed hole (50) for being in threaded connection with the fixing piece (4); the fixing piece (4) is abutted to the output electrode of the battery module, the fixing piece (4) penetrates into the fixing matching piece (5) and rotates along the axial direction of the fixing piece at a fixed height, the fixing matching piece (5) can apply acting force to the cover matching seat (31) by virtue of the threaded connection relation between the fixing piece and the fixing piece (4), and the fixing matching piece moves upwards relative to the cover matching seat (31) under the action of the counterforce applied to the cover matching seat (31).

2. The base of the battery module protector according to claim 1, wherein the screw holes (50) are formed in the up-down direction, and the cover fitting seat (31) is provided with receiving grooves (311) capable of receiving the cover fitting seat (31); the base (3) further comprises a limiting piece (6), and the limiting piece (6) is arranged on the cover matching seat (31) and can be clamped with the fixed matching piece (5) to limit the upward movable stroke of the fixed matching piece (5); the output electrode of the battery module comprises a flow guide row, and the upward movable stroke of the fixed matching piece (5) is configured to enable the fixed matching piece to abut against the flow guide row.

3. The base of the battery module protector as claimed in claim 2, wherein the receiving groove (311) comprises a groove body (3111), a plurality of ribs (3112) are formed to protrude from the inner wall of the groove body (3111) toward the center of the groove body (3111), the ribs (3112) are spaced apart from each other, and the plurality of ribs (3112) enclose a structure capable of limiting the fixing engagement member (5) in the horizontal direction.

4. The base of the battery module protection device according to claim 2, wherein the limiting member (6) comprises a pin handle (61) and a pin rod (60) which are connected with each other, the pin rod (60) is extended along the horizontal direction, the cover fitting seat (31) is provided with a fitting inlet (313) for communicating with the accommodating groove (311) and a jack (312) located on one side of the fixing fitting member (5), the fixing fitting member (5) is provided with a long hole (51) which is horizontally penetrated through the fixing fitting member, the pin handle (61) can be fitted with the fitting inlet (313), the pin rod (60) can be inserted into the long hole (51) through the fitting inlet (313) and clamped into the jack (312), so that the fixing fitting member (5) can move up and down relative to the cover fitting seat (31) and cannot be separated from the cover fitting seat (31).

5. The base for the battery module protector as claimed in claim 2, wherein the receiving groove (311) can form an opening in the cover fitting seat (31) for the fixing fitting member (5) to be fitted into the cover fitting seat (31) in a horizontal direction; the fixed matching part (5) comprises at least two bolt connection units (522), a matching groove (521) which is sunken relative to the bolt connection units (522) is formed between the bolt connection units (522), the bolt connection holes (50) are formed in the bolt connection units (522), a matching hole (3113) through which the bolt connection units (522) can pass is formed in the cover matching seat (31), the matching hole (3113) is formed in the vertical direction and communicated with the accommodating groove (311), the limiting part (6) is arranged between the matching holes (3113), and the limiting part (6) can be matched with the matching groove (521); the matching hole (3113) with locating part (6) are in coordination mutually, can joint on the horizontal direction fixed fitting piece (5).

6. The base of the battery module protector as claimed in claim 5, further comprising a stopper member (33), wherein the stopper member (33) comprises a plate-shaped portion (331) and a closing portion (332) connected to each other, the plate-shaped portion (331) being located below the fixing fitting member (5), and the closing portion (332) being capable of closing an opening in the cover fitting seat (31) into which the fixing fitting member (5) is inserted.

7. The base for the battery module protector as claimed in claim 5, wherein the receiving groove (311) has a cross section in a letter-convex shape, the fixing fitting member (5) has a cross section in a letter-convex shape, and the fixing fitting member (5) comprises a body (52) and flanges (53) protruding outward from the lower front and rear surfaces of the body (52); a third gap (9) is formed between the bottom wall of the matching groove (521) and the bottom surface of the limiting piece (6), a fourth gap (10) is formed between the top surface of the flange (53) and the accommodating groove (311), and the smaller value of the third gap (9) and the fourth gap (10) in the vertical direction is the stroke of the fixing matching piece (5) capable of moving upwards.

8. A protection device, characterized by comprising a base (3) of a battery module protection device according to any one of claims 1 to 7.

9. An end plate integrated with a base (3) of a battery module protector according to any one of claims 1 to 7.

10. A battery pack, characterized by comprising a base (3) of the battery module guard according to any one of claims 1-7.

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