CN218525668U - Integrated end plate of battery module and battery pack with same - Google Patents

Abstract

The utility model relates to an integrated end plate of a battery module, a battery module with the integrated end plate and a battery pack, wherein the end plate is integrated with a base of an insulation protection device, the insulation protection device is used for protecting an output electrode of the battery module, the output electrode comprises a guide row and a copper bar which have connection relations, the insulation protection device also comprises a protective cover which is detachably connected with the base, and the protective cover is covered outside the connection part of the guide row and the copper bar; the base comprises a cover matching seat and a cover matching part which are arranged on the end plate at intervals, the cover matching seat is provided with a part for clamping the first protective cover, and the cover matching part is provided with a part for clamping the second protective cover; the base can be detachably connected with the first protective cover to form an insulating protection device, and the insulating protection device can enable the copper bar to extend out of the base along a first direction; the base can be dismantled with the second visor and be connected and form insulating protector, and this insulating protector can supply the copper bar to stretch out itself along the second direction.

Description

Integrated end plate of battery module and battery pack with same

Technical Field

The utility model relates to a battery package preparation field, concretely relates to integrated form end plate of battery module and have its battery module and 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 that stretches out of this water conservancy diversion row extends the end plate position to be connected with the one end electricity of strip copper bar and be connected the output pole in order to form this battery module, simultaneously, the other end of this strip copper bar is arranged in arranging the electricity with the water conservancy diversion in other battery modules and is connected, and then founds the electric connection relation between the battery module.

In the related art, since the guide bar and the copper bar are both conductors and belong to high-voltage devices, an insulation protection device mainly made of insulation materials (such as plastics) is arranged at the joint of the guide bar and the copper bar, and the insulation protection device can be covered outside the joint of the guide bar and the copper bar to perform insulation protection on the joint and also can provide a bearing platform for the joint of the guide bar and the copper bar; after the insulating protection device, the flow guide bar and the copper bar are assembled, the flow guide bar and the copper bar are arranged in the insulating protection device in a penetrating mode and have partial structures extending into the insulating protection device and partial structures extending out of the insulating protection device.

When the protective cover is connected with the base, the protective cover covers the outer side of the joint of the diversion row and the copper bar, and the base provides a bearing platform for the joint of the diversion row and the copper bar. Based on this, the design scheme of the common insulation protection device includes: making the end plate of a non-metallic material, for example plastic, to which the base is integrated, for example by injection moulding; in this scheme, the base can be dismantled with the visor and be connected the back, and the opening that supplies the copper bar to stretch out that forms on the insulating protector often can only supply the copper bar to be drawn forth along a fixed direction.

However, in the same battery pack, different copper bar leading-out schemes often exist between the battery modules at different positions, for example, a copper bar arranged at the end of one battery module needs to be led out along the length direction of the battery module, and a copper bar corresponding to another battery module needs to be led out along the width direction of the battery module.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an integrated end plate of a battery module, and a battery module and a battery pack having the same.

The utility model provides an integrated form end plate of battery module, the base that has insulating protector is integrated on it, insulating protector is used for protecting the output pole of battery module, the output pole includes water conservancy diversion row and the copper bar that has the relation of connection, insulating protector still includes the visor that can dismantle the connection with the base, the visor cover is established outside the junction of water conservancy diversion row and copper bar; the base comprises a cover matching seat and a cover matching part which are arranged on the end plate at intervals, the cover matching seat is provided with a part for clamping the first protective cover, and the cover matching part is provided with a part for clamping the second protective cover; the base can be detachably connected with the first protective cover to form an insulating protection device, and the insulating protection device can enable the copper bar to extend out of the base along a first direction; the base can with the second visor can be dismantled and be connected and form insulating protector, and this insulating protector can supply the copper bar to stretch out itself along the second direction.

Optionally, the surface of the end plate away from the center of the battery module is an outer surface thereof, the cover mating seat and the cover mating portion protrude in the first direction with respect to the outer surface of the end plate, and the cover mating seat is located below the cover mating portion and includes a seat body and a support wall; in the reverse direction of the second direction, the supporting wall protrudes upwards from the edge of the seat body so as to seal the end part of the insulation protection device without the requirement of leading out a copper bar; the upper portion of supporting wall is equipped with the joint groove, the joint groove runs through the supporting wall, the joint groove can be right first visor or the second visor is spacing in first direction and reverse enterprising line.

Optionally, the lower part of the supporting wall is provided with a part structure protruding out of the seat body, and the part structure and the outer contour of the seat body form a clamping contour; a clamping flange is arranged at one end of the seat body on the opposite side of the supporting wall, and the clamping contour and the clamping flange are used for being clamped with the first protective cover and preventing the first protective cover from moving upwards; the clamping flange and the clamping contour can also cooperate and limit the first protective cover in the second direction and the reverse direction thereof.

Optionally, the cover engaging portion is located above the cover engaging seat, the cover engaging portion includes an edge beam, an engaging beam, and a connecting rib, the edge beam and the cover engaging seat are located on the same side of the end plate, and the edge beam can support the first protective cover or the second protective cover; the connecting rib is positioned between the end plate and the edge beam and connected with the end plate and the edge beam; the matching beam is connected with the end plate and the edge beam and is arranged at intervals with the connecting rib, matching holes are formed at the intervals, and partial structures of the second protective cover can extend into the matching holes to enable the second protective cover to be clamped with the connecting rib so as to prevent the second protective cover from moving upwards; the mating holes can also limit the second protective cover in a second direction and an opposite direction thereof.

Optionally, the end plate is provided with a fitting groove, and the fitting groove is located below the cover fitting part and on one side of the cover fitting seat close to the end plate; the matching groove is used for allowing the flow guide row on the battery core in the battery module to penetrate through the matching groove, the matching groove leads to the space between the cover matching seat and the cover matching part, and the flow guide row can extend onto the cover matching seat through the flow guide row.

The utility model also provides a battery module, include as above any the integrated form end plate of battery module.

The utility model also provides a battery package, include as above arbitrary the integrated form end plate of battery module.

Optionally, the first direction with second direction mutually perpendicular, the second direction with the width direction of battery module is parallel, the first direction with the length direction of battery module is parallel, lid cooperation seat can be in the length direction of battery module is spacing first visor or second visor.

The utility model also provides a battery pack, including the integrated end plate of the battery module as above, further including a first protective cover, the first protective cover includes a first main body, and a side wall, a first clamping rib and a clamping rib which are arranged on the first main body, two side walls respectively extend downwards from two ends of the first main body, and a buckling part is arranged on the side wall; the clamping part is positioned on the lower side of one end of the first main body and used for being clamped with the clamping flange, and the clamping part positioned on the lower side of the other end of the first main body is used for being clamped with the clamping contour; the first clamping rib is arranged on the lower surface of the first main body and is used for clamping with the clamping groove; the centre gripping muscle sets up the side of first joint muscle and with form between the lateral wall and be used for cooperating the space of bearing wall.

Optionally, the first body has a portion of structure extending above and supported by the perimeter beam, the perimeter beam being capable of restraining the first protective cover from downward movement.

Optionally, the battery pack further comprises a first structure beam arranged in parallel with the width direction of the battery module, a first accommodating groove is formed in the first structure beam and used for accommodating an insulation protection device comprising the first protection cover, the first accommodating groove can be used for enabling the copper bar to penetrate out of the first accommodating groove along the first direction and enabling the copper bar to extend to the opposite side of the battery module so as to be electrically connected with other battery modules.

The utility model also provides a battery pack, include as above the integrated form end plate of battery module, still include the second visor, the second visor includes the second main part to and set up turning over a wall, joint spare, longeron, cooperation arch and the second joint muscle on the second main part, it is used for being located one side of copper bar to turn over a wall to seal the tip that no copper bar draws forth the demand in the insulation protection device, joint spare is located turn over the offside of a wall and include a pair of joint unit of interval setting, the joint unit card is in the mating holes, and its width can reduce under the exogenic action; a clamping hook which protrudes outwards from the surface is arranged on the surface of one clamping unit, which is far away from the other clamping unit, the clamping hook is clamped with the connecting rib, the clamping hook can prevent the clamping unit from moving upwards, and the clamping of the clamping unit and the connecting rib can be released after the width of the clamping unit is reduced; at least two the longeron sets up on the lower surface of second main part and have the interval each other, this interval forms the slot, the ditch inslot is equipped with second joint muscle, the slot can supply the bearing wall stretches into wherein and relies on the longeron is spacing on second direction and reverse the lid cooperation seat, second joint muscle be used for with joint groove joint.

Optionally, a supporting boss is disposed on the second main body at an opposite side of the folded wall, the supporting boss extends to the edge beam and is supported by the edge beam, and the edge beam can limit downward movement of the second protective cover.

Optionally, the battery pack further includes a second structural beam arranged in parallel to the width direction of the battery module, a second accommodating groove extending along a second direction is formed in the second structural beam, the second accommodating groove is used for accommodating an insulation protection device including the second protective cover, one end of the copper bar is located in one end of the second accommodating groove, and the other end of the copper bar is located in the other end of the second accommodating groove; one end of the copper bar is positioned between the cover matching seat and the second protective cover and is electrically connected with the battery module, and the other end of the copper bar is electrically connected with other battery modules.

In summary, for battery modules with different copper bar leading directions, the utility model provides an integrated end plate which can be adapted to the battery modules simultaneously; the end plate is provided with a cover matching part and a cover matching seat, wherein the cover matching part and the cover matching seat are provided with parts for clamping and supporting protective covers (with different structures according to different leading-out requirements of copper bars), the integrated end plate is compact in structure and good in universality, and the development and production cost of the battery pack can be effectively reduced; in the process of developing and producing the battery pack, a designer only needs to select the protective covers with corresponding structures according to different copper bar leading-out requirements of the battery module. Furthermore, by correspondingly adjusting the structure of the protective cover (such as the first protective cover or the second protective cover), the end plate can enable the insulating protective device using the end plate to have a flexibly selected copper bar leading-out direction; furthermore, the end plate can meet the insulating and protecting performance and simultaneously form a connecting structure which is easy to disassemble and assemble with the protective cover.

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 using a first protective cover according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a battery module using a second protective cover according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of an end plate, a base and a flow guide row located at the end of a battery module according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the embodiment of the present invention after the copper bar and the base are assembled and led out along the first direction.

Fig. 5 is a schematic view of an end plate and its upper base according to an embodiment of the present invention.

Fig. 6 is a first schematic structural diagram of the first protective cover in the embodiment of the present invention.

Fig. 7 is a second schematic structural diagram of the first protective cover according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of the first protective cover, the base and the copper bar led out along the first direction in the embodiment of the present invention.

Fig. 9 is a schematic view of the first protection cover after being engaged with the base in the embodiment of the present invention.

Fig. 10 is a schematic diagram of the battery module using the first protective cover after being assembled with the first structural beam according to the embodiment of the present invention.

Fig. 11 is a schematic diagram of the battery module using the second protection cover after being assembled with the second structural beam according to the embodiment of the present invention.

Fig. 12 is a schematic view of the second protective cover, the base, and the copper bar led out along the second direction according to the embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a second protective cover according to an embodiment of the present invention.

Fig. 14 is a schematic view of a second protective cover and a base according to an embodiment of the present invention.

Fig. 15 is a first partial schematic view illustrating the second protective cover and the base of the embodiment of the present invention after being engaged with each other.

Fig. 16 is a second partial schematic view of the second protective cover and the base after being engaged with each other according to the embodiment of the present invention.

Fig. 17 is a third schematic view of the second protective cover and the base after being engaged with each other according to the embodiment of the present invention.

Fig. 18 is a fourth schematic view of the second protective cover and the base in the embodiment of the present invention.

Description of the reference numerals

The battery comprises an A-battery cell, a B-protective cover, a C-base, an alpha-first direction and a beta-second direction;

1-guide row, 2-end plate, 21-matching groove and 3-copper bar;

4-cover matching seat, 41-seat body, 411-groove, 412-clamping flange, 42-supporting wall, 421-clamping groove and 43-clamping outline;

5-cover matching part, 51-edge beam, 52-matching beam, 53-connecting rib, 54-matching hole and 55-reinforcing wall;

6-a first protective cover, 60-a first main body, 61-a side wall, 62-a clamping part, 63-a clamping rib, 64-a first clamping rib, 65-a transverse rib and 66-a reinforcing rib;

7-a second protective cover, 71-a second main body, 72-a turnover wall, 73-a support boss, 74-a clamping piece, 741-a clamping unit, 742-a holding part, 743-a clamping hook, 75-a longitudinal beam, 76-a matching bulge, 77-a second clamping rib and 78-a groove;

8-fixed mating piece, 9-fixed piece, 10-first structural beam, 101-first accommodating groove, 11-second structural beam, 111-second accommodating groove.

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.

As shown in fig. 1 and fig. 2, the present embodiment provides a battery pack, in which a plurality of approximately rectangular battery modules are disposed, where each battery module includes a flow guide row 1, a battery cell a, and an end plate 2, where the battery cell a is located at an end of the battery module, the end plate 2 is located outside the battery cell a, and a side surface of the end plate 2 away from the battery cell a is an outer surface thereof; on the lower part of this electric core A, water conservancy diversion is arranged 1 and is stretched to the partial structure on this electric core A right side convexly, and this partial structure is arranged in being connected with the one end electricity of bar form copper bar 3 and is connected in order to constitute the output pole of this battery module, and the other end of copper bar 3 is arranged in being connected with electricity in another battery module to establish the electric connection relation between the battery module.

In the battery pack of the present embodiment, the copper bar 3 used by some battery modules needs to be led out along a first direction α of the battery module, and the copper bar 3 used by some battery modules needs to be led out along a second direction β of the battery module, where the first direction α specifically points to the right side of the battery module along the length direction of the battery module, and the second direction β specifically points to the front side of the battery module along the width direction of the battery module; meanwhile, the end plate 2 is a plastic product obtained by injection molding, the battery pack further comprises an insulation protection device arranged corresponding to the copper bar 3, the insulation protection device comprises a protection cover B and a base C, the base C comprises a cover matching seat 4 and a cover matching part 5 which are integrally formed with the end plate 2 by injection molding, the cover matching part 5 is positioned above the cover matching seat 4, the cover matching seat 4 and the cover matching part 5 are respectively formed by extending rightwards from different positions on the outer surface of the end plate 2, and when the copper bar 3 needs to be led out along a first direction alpha, the protection cover B is a first protection cover 6 with a first structure as shown in fig. 1; when the copper bar 3 needs to be led out along the second direction β, the protective cover B is a second protective cover 7 having a second structure as shown in fig. 2. In this embodiment, the cover fitting seat 4 and the cover fitting portion 5 cooperate with each other to form a base B that can be detachably connected to the first protective cover 6 and also detachably connected to the second protective cover 7, so that the copper bar 3 can be led out of the insulation protection device rightward or forward.

Referring to fig. 3 and 4, the end plate 2 of the present embodiment is provided with a fitting groove 21 for the flow guide row 1 to extend into, the fitting groove 21 is located on the left side of the cover fitting seat 4 and on the lower side of the cover fitting portion 5, and has a U-shaped cross section with an upward opening and opens between the cover fitting seat 4 and the cover fitting portion 5; correspondingly, the flow guide row 1 turns back into the matching groove 21 from the right front direction of the battery core A, finally extends upwards to reach between the cover matching part 5 and the cover matching seat 4, and then extends rightwards to extend to the direction above the cover matching seat 4; furthermore, a fixing matching piece 8 (a nut in this embodiment) for matching with a fixing piece 9 (a bolt in this embodiment) is fixedly arranged inside the cover matching seat 4 in an insert injection molding manner, and the fixing piece 9 can sequentially penetrate into the copper bar 3, the flow guide bar 1 and the fixing matching piece 8 so as to fix the copper bar 3 and the flow guide bar 1 on the cover matching seat 4; taking the copper bar 3 which needs to be led out rightwards as an example, the guide row 1, the end plate 2 and the copper bar 3 are assembled in sequence as follows:

s1: the end plate 2 is installed on the outer side of the battery cell A located at the end part of the battery module;

s2: the flow guide bar 1 is matched with the matching groove 21 and is welded with the battery cell A;

s3: one end of the copper bar 3 covers the part of the guide bar 1 extending above the cover matching seat 4.

Therefore, the fixing piece 9 sequentially penetrates into the copper bar 3, the flow guide bar 1 and the fixing matching piece 8 subsequently, the base C is detachably connected with the protective cover B with the corresponding structure, and the insulating protection device with the copper bar 3 leading-out opening reserved in the specific direction can be formed.

Referring to fig. 5, the cover matching seat 4 of the base C specifically includes a seat body 41 and a supporting wall 42, wherein the seat body 41 is substantially rectangular, and the supporting wall 42 is formed by upwardly projecting from the rear edge of the upper surface of the seat body 41 and is a rectangular plate with a length direction along the left-right direction; the front edge of the lower surface of the supporting wall 42 is connected with the seat body 41 into a whole, and the rear edge is positioned at the rear side of the seat body 41, so that a Z-shaped clamping profile 43 is connected between the outer profile of the clamping wall and the rear surface of the seat body 41, and the clamping profile 43 is used for being in clamping connection with the first protection cover 6; meanwhile, a U-shaped clamping groove 421 is formed in the upper edge of the middle of the supporting wall 42, the clamping groove 421 is formed in a manner of penetrating through the front and back and sinking downwards from the upper surface of the supporting wall 42, and is used for being clamped with the first protective cover 6 or the second protective cover 7; the supporting wall 42 is also used to shield the rear side of the copper bar 3 for insulation protection, i.e. the insulation protection device has no rear opening; in addition, a recess 411 is formed in the middle of the left surface of the seat body 41 by recessing from front to back, and the recess 411 is a right-angled U-shaped groove with an opening facing to the right; the upper edge of the groove 411 forms a clamping flange 412 extending along the left-right direction relative to the middle part thereof naturally; similar to the snap groove 421, the snap flange 412 is used for snap engagement with the first protection cap 6 in this embodiment.

It should be noted that the purpose of the left-right extension of the clamping flange 412 is to simplify the complexity of the mold for injection molding the end plate 2 and the base B as much as possible; more specifically, since the clamping flange 412 is disposed at the opposite side of the clamping groove 421 and perpendicular to the front surface of the end plate 2, the clamping flange 412 does not have excessive influence on the molding of the end plate 2 during the injection molding process, in other words, in the injection mold, the molding cavity corresponding to the clamping flange 412 is communicated with the molding cavity corresponding to the end plate 2 only by virtue of (expected to be formed by) the rear end portion of the clamping flange 412, which is beneficial for a designer to set the ejection point of the finished injection molded part on the end plate 2, so that the finished injection molded part can be easily stripped smoothly, defective products caused by abnormal stripping can be reduced to a certain extent, and the difficulty in manufacturing the injection mold can be reduced.

In view of the above, the cover engagement portion 5 of the base C includes the edge beam 51, the engagement beam 52, and the two connection ribs 53, wherein the edge beam 51 is a cross beam extending in the front-rear direction, the front edge of the edge beam 51 slightly protrudes forward with respect to the front edge of the seat body 41, and the rear end of the edge beam 51 is in contact with the front surface of the support wall 42 and integrally connected. The engaging beam 52 has a convex cross section, is provided between the outer surface of the end plate 2 and the edge beam 51, is integrated with the outer surface of the end plate 2 and the edge beam 51, and is provided between the two connecting ribs 53 at a distance from the connecting ribs 53. Correspondingly, the connecting rib 53 is rectangular, the connecting rib 53 is connected with the outer surface of the end plate 2 and the edge beam 51 into a whole, and the two connecting ribs 53 are respectively positioned on the left front side and the left rear side of the edge beam 51; the space between the connecting rib 53 and the engaging beam 52 is vertically penetrated, and a rectangular engaging hole 54 is formed. In this embodiment, the edge beam 51 is used to support the first protective cover 6 or the second protective cover 7, the matching beam 52 is used to be connected with the second protective cover 7 in a snap-fit manner, and the matching hole 54 is used to be connected with the second protective cover 7 in a snap-fit manner, so that part of the structure of the second protective cover 7 can extend into the matching hole 54 and be connected with the connecting rib 53 in a snap-fit manner.

Further, the upper and lower surfaces of the edge beam 51 are respectively arranged at the same height as the upper and lower surfaces of the mating beam 52, the lower surface of the edge beam 51 and the lower surface of the connecting rib 53 are located at the same height, the upper surface of the connecting rib 53 is lower than the upper surface of the edge beam 51, and the connecting rib 53 and the edge beam 51 are connected to form an L-shaped cross section structure with an opening facing to the left and penetrating from front to back.

Further, reinforcing walls 55 are provided at the front and rear ends of the edge beam 51, and the reinforcing walls 55 are formed to extend rightward from the outer surface of the end plate 2 and are integrally connected to the ends of the connecting ribs 53 remote from the mating beam 52, thereby reinforcing the strength of the entire cover mating portion 5.

Based on the foregoing structure of the cover engaging portion 5 and the base body 41, the first protection cover 6 in this embodiment correspondingly includes the first main body 60, the side walls 61, the clamping ribs 63 and the first clamping ribs 64 as shown in fig. 6 and 7, the first main body 60 is a horizontally disposed convex plate, the two side walls 61 are respectively formed by folding down from the front and rear edges of the first main body 60, wherein the side wall 61 extending downward from the front edge of the first main body 60 is used for shielding the front side of the copper bar 3, so that the insulation protection device does not have a front opening, so as to realize insulation protection; a fastening part 62 which is approximately shaped like a Chinese character '\20058' is arranged on the lower edge of the side wall 61, a hook-shaped clamping head of the fastening part 62 protrudes out of the lower edge of the side wall 61, and the fastening parts 62 on the side walls 61 on the two sides are oppositely arranged.

It is above-mentioned to hold, first joint muscle 64 and two centre gripping muscle 63 are all from the lower surface downwardly extending formation of first main part 60, and all be located the tip of first main part 60, wherein first joint muscle 64 extends the platelike muscle of arranging for the fore-and-aft direction, two centre gripping muscle 63 intervals set up the both sides at first joint muscle 64 one left and right, and all have the opening orientation and be the L type cross sectional structure of oblique below, this structure makes and has certain space between centre gripping muscle 63 and the lateral wall 61, this space is set up to supplying supporting wall 421 to stretch into.

Referring to fig. 8 and 9, after the first protecting cover 6 is engaged with the cover engaging portion 5 and the seat body 41, the side wall 61 at the front side of the first main body 60 is located at the front side of the locking flange 412, and the locking portion 62 thereon is locked to the locking flange 412, so that the first protecting cover 6 cannot move forward, backward and upward; the side wall 61 at the rear side of the first body 60 is at the rear side of the supporting wall 42, and the buckling part 62 on the side wall is buckled with the buckling contour 43, so that the first protection cover 6 cannot move upwards and forwards and is difficult to move backwards; the first catching rib 64 is caught in the catching groove 421 of the supporting wall 42 to restrict the left and right movement of the first protection cover 6. Further, by adjusting the height of the first clamping rib 64, the first clamping rib 64 can also be contacted with the bottom of the clamping groove 421, so as to limit the downward movement of the first protection cover 6. In addition, the upper portion of the supporting wall 42 further extends into the space between the clamping rib 63 and the side wall 61 and is matched with the L-shaped cross-sectional structure formed on the clamping rib 63, so that the upper portion of the supporting wall 42 is clamped between the clamping rib 63 and the side wall 61, the first protecting cover 6 is limited in the front-rear direction, and at the moment, the supporting wall 42 also plays a certain supporting role for the first protecting cover 6. Further, the left end of the first body 60 shaped like a letter "convex" is an end having a smaller width, and the end of the first body 60 extends above the connecting rib 53 and the engaging beam 52 and is overlapped on the edge beam 51, so that the first protection cover 6 is supported by the cover engaging portion 5 in the up-down direction as shown in fig. 10 and cannot move downward.

Preferably, still be equipped with the horizontal muscle 65 that sets up along the fore-and-aft direction extension on first main part 60, horizontal muscle 65 forms from the lower surface downward protruding of first main part 60, and its front and back end is even as an organic whole with the centre gripping muscle 63 that is located first protective cover 6 left part and first protective cover 6 right part respectively to ensure first protective cover 6's bulk strength. More preferably, because all be equipped with lateral wall 61 on the front end of first main part 60 and the rear end, consequently first main part 60 makes the right-hand member of first main part 60 for opening decurrent U type form with these two side walls 61 naturally, on this basis, have platelike strengthening rib 66 from the lower surface downwardly extending of first main part 60 on the lower surface of the right part of first main part 60, this strengthening rib 66 has covered nearly half area of first main part 60 right opening, can not influence the copper bar 3 and stretch out, can also further improve the bulk strength of first protection lid 6 simultaneously.

With continuing reference to fig. 10 based on the above description, the battery module requiring the first protective cover 6 to be engaged with the base C is connected with other battery modules in the form of a battery pack: the left end of the copper bar 3 is electrically connected with the battery module, and the right end of the copper bar 3 is electrically connected with other battery modules on the right side of the battery module. Further, the battery package in this embodiment includes the lower tray that is used for bearing the battery module (belong to prior art, not repeated, be equipped with the first structure roof beam 10 (metal system) that belongs to the low pressure member on this lower tray, satisfies between the battery module and connects under the prerequisite through copper bar 3 electricity, this first structure roof beam 10 is used for setting up between the battery module.

Specifically, the first structural beam 10 is located on the right side of the illustrated battery module, and is provided with a first receiving groove 101 penetrating through the battery module in the width direction thereof, the first receiving groove 101 is a rectangular U-shaped groove having an opening that is upwardly broken at the upper surface of the first structural beam 10, and the bottom wall thereof is located at the lower side of the cover mating seat 4 so as to receive the base C, and the copper bar 3 extending out of the base C can be electrically connected with other battery modules at the right end thereof; at this moment, the first protection cover 6 covering the outer side of the end of the copper bar 3 is used for realizing insulation protection between the high-voltage part (i.e. the guide bar 1 and the copper bar 3) and the low-voltage part (i.e. the first structural beam 10). Furthermore, the length of the first accommodating groove 101 in the front-back direction is greater than twice the length of the base C in the front-back direction, so that the copper bar 3 can be arranged at the front side of the battery module to form other battery modules led out to the right. It should be noted that, the left and right parts of the first protection cover 6 in this embodiment are symmetrical to each other, that is, the left and right parts of the first protection cover 6 are all provided with the structures such as the fastening part 62, the clamping rib 63, the first fastening rib 64, and the like, and these structures are symmetrical to each other, so that on the premise that the structures of the base C on the end plate 2 are consistent, the first protection cover 6 can be directly used to cooperate with the base C of the battery module, as for other battery modules which are located at the opposite side of the battery module and are in mirror symmetry with the battery module.

Referring to fig. 11, similarly, when the protective cover B is the second protective cover 7, the copper bar 3 is led out forward and arranged along the front-rear direction, the lower tray of the battery pack is further provided with a second structural beam 11, the second structural beam 11 is provided with a second receiving groove 111, the second receiving groove 111 is a groove formed by sinking downward from the upper surface of the second structural beam 11, and the groove is a U-shaped groove with an opening facing to the left; after the second structural beam 11 is matched with the battery module using the second protective cover 7, the cover matching seat 4 is located in the rear portion of the second accommodating groove 111, the rear end of the copper bar 3 is located in the cover matching seat 4, and the front end of the copper bar 3 is located in the front portion of the second accommodating groove 111 and is electrically connected with other battery modules. The right and left portions of the second protective cover 7 are also designed to be symmetrical to each other, so that the applicability thereof is ensured.

In this embodiment, the second protection cover 7 has a structure as shown in fig. 12 to 13, and includes a second main body 71, a folding wall 72, a holding boss 73, a locking member 74, a longitudinal beam 75, a fitting protrusion 76, and a second locking rib 77, where the second main body 71 is a horizontally disposed rectangular parallelepiped plate, the folding wall 72 is a rectangular parallelepiped plate formed by folding downward from the right edge of the second main body 71, the holding boss 73 is formed by protruding forward from the left edge of the second main body 71 and has a cross section in a shape of a Chinese character 'tu', and the number of the holding bosses 73 is two, and two holding bosses 73 are disposed at intervals.

In view of the above, the clamping member 74 in this embodiment has certain elasticity, the clamping member 74 is located between the supporting bosses 73, the middle portion of the clamping member 74 is connected with the second main body 71 into a whole, and the clamping member includes two U-shaped clamping units 741 with upward openings; the middle part of the clamping unit 741 is connected with the second main body 71 into a whole, and the upper part and the lower part of the clamping unit are respectively higher than and lower than the second main body 71; in the two ends naturally formed by the opening of the clamping unit 741, the end far away from the other clamping unit 741 is provided with a holding portion 742 horizontally extending to the outside of the clamping member 74, the end near the other clamping unit 741 is connected with the end of the other clamping unit 741 into a whole, and a space shaped like a Chinese character 'ji' with an opening facing downwards is formed in the middle of the clamping member 74; a hook 743 is arranged on the lower part of the clamping unit 741, namely the surface of the clamping unit 741, which is far away from the space in the shape of a Chinese character ji, and the hook 743 is formed by extending obliquely upwards from the surface of the clamping unit 741; when a person holds the holding portions 742 and applies a force to move the holding portions 742 closer to each other, the engaging unit 741 deforms and decreases in width, and the hooks 743 are moved closer to each other.

As described above, two pairs of longitudinal beams 75 arranged in the left-right direction are respectively formed by extending downward from the front and rear ends of the lower surface of the second body 71, and the two longitudinal beams 75 in each pair of longitudinal beams 75 are arranged at intervals, so that two U-shaped grooves 78 with downward openings are formed in the lower surface of the second body 71; in this groove 78, the fitting projection 76 and the second clamping rib 77 are formed by extending downward from the lower surface of the second main body 71, wherein the number of the fitting projections 76 is two, the number of the second clamping rib 77 is one, the two fitting projections 76 are respectively arranged in the left end and the right end of the groove 78, the height of the downward extension of the two fitting projections is about 1/3 of the height of the downward extension of the second clamping rib 77, and the second clamping rib 77 is arranged in the middle of the groove 78 and located between the two fitting projections 76.

Referring to fig. 13 and 14, as mentioned above, the cover fitting portion 5 includes the connecting rib 53, the fitting beam 52 and the edge beam 51, and the cover fitting seat 4 includes the supporting wall 42 and the engaging groove 421. Correspondingly, the latch 74 in this embodiment is configured to latch with the cover engaging portion 5 to limit the forward, backward and upward movement of the second protective cover 7, the support projection 73 is configured to be placed on the edge beam 51 to limit the downward movement of the second protective cover 7, the groove 78 is configured to cooperate with the support wall 42 so that the longitudinal beam 75 surrounding the support wall can limit the forward and backward movement of the second protective cover 7, the engaging projection 76 is configured to contact with the upper surface of the support wall 42 and can prevent the downward movement of the second protective cover 7, and the second latch rib 77 is configured to latch with the latch groove 421 to limit the left and right movement of the second protective cover 7.

To describe this in more detail, after the second protection cover 7 is assembled with the cover mating seat 4 and the cover mating portion 5, the folding wall 72 is hidden on the right side of the cover mating seat 4, so that the insulation protection device is designed without a right opening, the distance between the longitudinal beam 75 and the cover mating seat 4 can lead out the copper bar 3 without being obstructed, the clamping unit 741 of the clamping member 74 is inserted into the mating hole 54 as shown in fig. 15, so that the second protection cover 7 is limited in the front-rear direction, the clamping hook 743 of the clamping member 74 is clamped with the lower surface of the connecting rib 53, so that the second protection cover 7 cannot move upward, and the space shaped like a Chinese character 'ji' formed between the clamping units 741 is matched with the mating beam 52, so that the mating beam 52 provides a certain supporting force for the second protection cover 7 and the second protection cover 7 cannot move downward. When the force is applied to the grip 742 to move the hooks 743 toward each other to a certain extent, the engaging member 74 is disengaged from the engaging hole 54, and the connection between the lid engaging portion 5 and the lid engaging base 4 is released.

As shown in fig. 16 and 17, the holding projection 73 is placed on the edge beam 51 so that the edge beam 51 provides a certain supporting force to the second protective cover 7 and the second protective cover 7 cannot move downward; as shown in fig. 18, the fitting protrusion 76 contacts the upper surface of the supporting wall 42, so that the supporting wall 42 provides a certain supporting force for the second protective cover 7 and prevents the second protective cover 7 from moving downward, and the second latching rib 77 extends into the latching groove 421 and fits with the latching groove 421 to achieve the limit of the second protective cover 7 in the left-right direction. Further, the second protective cover 7 can be limited from moving downward after being clamped with the clamping groove 421 by adjusting the height of the second clamping rib 77.

It should be noted that the reason for providing the engaging protrusion 76 is that, compared with a scheme in which the supporting wall 42 needs to be engaged with the groove 78, the provision of the engaging protrusion 76 reduces the portion engaged with the supporting wall 42, and can relax the production requirements of the groove 78 and the engaging protrusion 76 to some extent and reduce the number of injection molding defective products. However, it is a matter of course that the person skilled in the art may choose not to provide the fitting projection 76 but to directly fit the groove 78 with the inner wall of the support wall 42, according to his own needs.

In summary, for battery modules with different leading directions of the copper bars 3, the utility model provides an end plate 2 integrated with a base C, which can be adapted to the battery modules at the same time; the end plate 2 is provided with a cover matching part 5 and a cover matching seat 4, wherein the cover matching part 5 and the cover matching seat 4 are provided with parts for clamping and supporting (different structures are provided according to different copper bar leading-out requirements) the protective cover B, the end plate 2 is compact in structure and good in universality, and the development and production cost of the battery pack can be effectively reduced; in the process of developing and producing the battery pack, a designer only needs to select the protective cover B with a corresponding structure according to different copper bar leading-out requirements of the battery module. Furthermore, by correspondingly adjusting the structure of the protective cover B (for example, the first protective cover 6 or the second protective cover 7), the end plate 2 enables the insulating protection device using the same to have a flexibly selected copper bar leading-out direction; furthermore, the end plate 2 can satisfy the insulation protection performance and form a connection structure with the protection cover B for easy assembly and disassembly.

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 (14)

1. An integrated end plate of a battery module is provided with a base integrated with an insulation protection device, the insulation protection device is used for protecting an output electrode of the battery module, the output electrode comprises a guide row (1) and a copper bar (3) which are connected, the insulation protection device further comprises a protective cover detachably connected with the base, and the protective cover is covered outside the connection part of the guide row (1) and the copper bar (3); the base is characterized by comprising a cover matching seat (4) and a cover matching part (5) which are arranged on the end plate (2) at intervals, wherein the cover matching seat (4) is provided with a part for clamping a first protective cover (6), and the cover matching part (5) is provided with a part for clamping a second protective cover (7); the base can be detachably connected with the first protective cover (6) to form an insulation protection device, and the insulation protection device can enable the copper bar (3) to extend out of the base along a first direction; the base can with second visor (7) can be dismantled and be connected and form insulating protector, and this insulating protector can supply copper bar (3) to stretch out self along the second direction.

2. The integrated endplate of a battery module according to claim 1, wherein the surface of the endplate (2) remote from the center of the battery module is an outer surface thereof, the cover engagement seat (4) and the cover engagement portion (5) protrude in the first direction with respect to the outer surface of the endplate (2), the cover engagement seat (4) is located below the cover engagement portion (5) and includes a seat body (41) and a support wall (42); in the direction opposite to the second direction, the supporting wall (42) protrudes upwards from the edge of the seat body (41) to close the end of the insulating protection device where no copper bar (3) is led out; the upper portion of supporting wall (42) is equipped with joint groove (421), joint groove (421) run through supporting wall (42), joint groove (421) can be right first visor (6) or second visor (7) are spacing on first direction and reverse.

3. The integrated-type end plate of a battery module according to claim 2, wherein the lower portion of the support wall (42) has a partial structure protruding out of the seat body (41) to form a snappable contour (43) with the outer contour of the seat body (41); a clamping flange (412) is arranged at one end of the seat body (41) on the opposite side of the supporting wall (42), and the clamping contour (43) and the clamping flange (412) are used for clamping the first protection cover (6) and preventing the first protection cover (6) from moving upwards; the clamping flange (412) and the clamping contour (43) can also cooperate and limit the first protective cover (6) in the second direction and in the opposite direction.

4. The integrated end plate of a battery module according to claim 3, wherein the cover engagement portion (5) is located above the cover engagement seat (4), the cover engagement portion (5) comprising an edge beam (51), an engagement beam (52) and a connection rib (53), the edge beam (51) and the cover engagement seat (4) being located on the same side of the end plate (2), the edge beam (51) being capable of supporting the first protective cover (6) or the second protective cover (7); the connecting rib (53) is positioned between the end plate (2) and the edge beam (51) and connected with the end plate (2) and the edge beam (51); the matching beams (52) are connected with the end plate (2) and the edge beam (51) and are arranged at intervals with the connecting ribs (53), the intervals form matching holes (54), and the matching holes (54) can be used for part of structures of the second protective cover (7) to extend into and enable the second protective cover (7) to be clamped with the connecting ribs (53) so as to prevent the second protective cover (7) from moving upwards; the fitting hole (54) can also limit the second protective cover (7) in the second direction and the reverse direction thereof.

5. The integrated end plate of a battery module according to claim 2, wherein the end plate (2) is provided with a fitting groove (21), and the fitting groove (21) is located below the cover fitting portion (5) and on one side of the cover fitting seat (4) close to the end plate (2); the matching groove (21) is used for allowing the flow guide row (1) on the battery core in the battery module to penetrate through, and the matching groove (21) leads to the space between the cover matching seat (4) and the cover matching part (5) and can allow the flow guide row (1) to extend onto the cover matching seat (4) through the flow guide row.

6. A battery module, characterized by comprising an integrated end plate (2) of the battery module according to any one of claims 1 to 5.

7. A battery pack characterized by comprising the integrated-type end plate (2) of the battery module according to any one of claims 1 to 5.

8. The battery pack according to claim 7, wherein the first direction and the second direction are perpendicular to each other, the second direction is parallel to a width direction of the battery module, the first direction is parallel to a length direction of the battery module, and the cover fitting seat (4) can restrain the first protective cover (6) or the second protective cover (7) in the length direction of the battery module.

9. A battery pack comprising the integrated end plate (2) of the battery module according to claim 4, and further comprising a first protective cover (6), wherein the first protective cover (6) comprises a first main body (60), and a side wall (61), a first clamping rib (64) and a clamping rib (63) arranged on the first main body (60), the two side walls (61) extend downwards from two ends of the first main body (60), and the side wall (61) is provided with a clamping part (62); the clamping part (62) positioned on the lower side of one end of the first main body (60) is used for clamping with the clamping flange (412), and the clamping part (62) positioned on the lower side of the other end of the first main body (60) is used for clamping with the clamping contour (43); the first clamping rib (64) is arranged on the lower surface of the first main body (60) and is used for being clamped with the clamping groove (421); the clamping rib (63) is arranged on the side edge of the first clamping rib (64) and forms a space used for matching with the supporting wall (42) between the side walls (61).

10. A battery pack as in claim 9, characterized in that said first body (60) has a partial structure extending to and held by said edge beams (51), said edge beams (51) being capable of limiting the downward movement of said first protective cover (6).

11. The battery pack according to claim 9, further comprising a first structural beam (10) disposed parallel to the width direction of the battery module, wherein a first receiving groove (101) is disposed on the first structural beam (10), the first receiving groove (101) is used for receiving an insulation protection device including the first protective cover (6), and the first receiving groove (101) allows the copper bar (3) to pass through itself along the first direction and allows the copper bar (3) to extend to the opposite side of the battery module to be electrically connected to other battery modules.

12. A battery pack, characterized by comprising the integrated end plate (2) of the battery module set according to claim 4, and further comprising a second protective cover (7), wherein the second protective cover (7) comprises a second main body (71), and a folded wall (72), a clamping member (74), a longitudinal beam (75), a matching protrusion (76) and a second clamping rib (77) which are arranged on the second main body (71), the folded wall (72) is used for being positioned on one side of the copper bar (3) to seal the end part of the insulation protection device without the need of leading out the copper bar (3), the clamping member (74) is positioned on the opposite side of the folded wall (72) and comprises a pair of clamping units (741) which are arranged at intervals, the clamping units (741) are clamped in the matching holes (54), and the width of the clamping units can be reduced under the action of external force; a clamping hook (743) protruding outwards from the surface is arranged on the surface of one clamping unit (741) deviating from the other clamping unit (741), the clamping hook (743) is clamped with the connecting rib (53), the clamping hook (743) can prevent the clamping unit (741) from moving upwards, and the clamping between the clamping unit (741) and the connecting rib (53) can be released after the width of the clamping unit (741) is reduced; at least two longerons (75) set up on the lower surface of second main part (71) and have the interval each other, and this interval forms slot (78), be equipped with in slot (78) second joint muscle (77), slot (78) can supply bearing wall (42) stretch into wherein and rely on longeron (75) are spacing on second direction and its reverse the lid cooperation seat (4), second joint muscle (77) be used for with joint groove (421) joint.

13. The battery pack according to claim 12, wherein a holding projection (73) is provided on the second main body (71) at the opposite side of the folded wall (72), the holding projection (73) extending to the edge beam (51) and being held by the edge beam (51), and the edge beam (51) being capable of restricting downward movement of the second protective cover (7).

14. The battery pack according to claim 12, further comprising a second structural beam (11) disposed parallel to the width direction of the battery module, wherein the second structural beam (11) is provided with a second receiving groove (111) extending along a second direction, the second receiving groove (111) is used for receiving an insulation protection device including the second protective cover (7), one end of the copper bar (3) is located in one end of the second receiving groove (111), and the other end is located in the other end of the second receiving groove (111); one end of the copper bar (3) is positioned between the cover matching seat (4) and the second protective cover (7) and is electrically connected with the battery module, and the other end of the copper bar is electrically connected with other battery modules.

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