CN109950441A - Battery pack - Google Patents

Abstract

The invention discloses a kind of battery packs, comprising: bottom deck assembly, afflux pipeline and battery modules.The bottom deck assembly includes the heat exchanger plates being arranged alternately and support plate, and the heat exchanger plates have longitudinally through heat exchanging chamber；The afflux pipeline is arranged in the both ends of the heat exchanger plates and is connected to the heat exchanging chamber；The both ends of the battery modules are fixedly connected with two support plates respectively, and are connected with the heat exchanger plates between two support plates.Heat-exchange system and the intracorporal bottom deck assembly of battery case are combined together by the battery pack, so that the overall structure of battery pack is more compact, can effectively realize the purpose of battery pack loss of weight, and Battery case can be enable to exchange hot systems and effectively protected.

Description

Battery pack

Technical field

The present invention relates to technical field of vehicle, in particular to a kind of battery pack.

Background technique

Heat-exchange system and Battery case in conventional batteries packet are completely self-contained two nested structure, and heat-exchange system is caused to occupy Battery package space is larger, and the overall structure of battery pack is not compact, and protective performance is also poor, and there are rooms for improvement.

Summary of the invention

The present invention is directed to solve one of above-mentioned technical problem in the prior art at least to a certain extent.For this purpose, this hair Bright to propose a kind of battery pack, the overall structure of the battery pack is more compact, and weight is lower, and protective performance is more preferable.

The battery pack of embodiment according to the present invention, comprising: bottom deck assembly, the bottom deck assembly include changing of being arranged alternately Hot plate and support plate, the heat exchanger plates have longitudinally through heat exchanging chamber；Afflux pipeline, the afflux pipeline setting are changed described It the both ends of hot plate and is connected to the heat exchanging chamber；Battery modules pass through thermally conductive Jie between the battery modules and the heat exchanger plates Matter connection.

The battery pack of embodiment according to the present invention, the battery pack is by heat-exchange system and the intracorporal bottom deck assembly knot of battery case It is combined, so that the overall structure of battery pack is more compact, can effectively realize the purpose of battery pack loss of weight, and battery case can be made Body can exchange hot systems and effectively be protected.

In addition, can also have following additional technical feature according to the battery pack of inventive embodiments:

According to some embodiments of the present invention, the afflux pipeline includes header and pipe fitting, the header setting The heat exchanger plates end and be connected to the heat exchanging chamber.

According to some embodiments of the present invention, the heat exchanging chamber of multiple heat exchanger plates passes through header and connection phase The pipe fitting of adjacent two headers is in parallel, and the multiple heat exchanging chambers of the heat transferring medium inside multiple heat exchanger plates are along same side The other end is flowed to from one end of multiple heat exchanger plates.

According to some embodiments of the present invention, the battery pack further include: assignment of traffic component, the assignment of traffic component It is folded between the heat exchanger plates and the header, the assignment of traffic component has multiple groups throttle orifice, and the header is logical The throttle orifice is crossed to be connected to the heat exchanging chamber.

According to some embodiments of the present invention, the header has mainstream cavity and is connected to the mainstream cavity more A branched hole, the branched hole are correspondingly arranged with the throttle orifice, and multiple heat exchanging chambers of the heat exchanger plates pass through the collection Flow tube is connected in parallel.

According to some embodiments of the present invention, the assignment of traffic component by adjust the throttle orifice quantity and/or Position and/or aperture adjust flow.

According to some embodiments of the present invention, the circulation area of the throttle orifice is less than the circulation of the heat exchanging chamber open end Area, the circulation area that the throttle orifice at both ends is located in the assignment of traffic component, which is greater than, is located in the middle the throttle orifice Circulation area.

According to some embodiments of the present invention, at least one of multiple described headers have for connecting with external water route Logical connectivity port, total circulation area of whole throttle orifices is with the assignment of traffic component to institute in the assignment of traffic component The distance for stating connectivity port increases and increases.

According to some embodiments of the present invention, the battery pack further include: side frame, the side frame include first end Arm, the second end arms and distance piece, the distance piece are connected between first end arms and second end wall, and described One end arms, the second end arms and the distance piece limit the cavity with opening, and the bottom deck assembly closes the cavity Opening, the afflux pipeline are located in the cavity.

According to some embodiments of the present invention, the bottom deck assembly includes staggered heat exchanger plates and support plate, described First end arms of side frame is connected with the upper surface of the heat exchanger plates and support plate.

According to some embodiments of the present invention, the end of the support plate is connected with the second end arms of the side frame, with The opening of the cavity is closed in corresponding position.

According to some embodiments of the present invention, the bottom deck assembly further includes patch plate, and the patch plate connects the side Second end arms of frame and the end of the heat exchanger plates, to close the opening of the cavity in corresponding position.

According to some embodiments of the present invention, the patch plate has first end, the second end being oppositely arranged, and opposite The third end and the 4th end of setting；The first end of the patch plate is connected with the second end arms of the side frame, the patch plate Second end be connected with the end of the heat exchanger plates；At least one end in the third end and the 4th end of the patch plate and adjacent The support plate is connected.

According to some embodiments of the present invention, pass through connected structure grafting phase between the heat exchanger plates and the support plate Even.

According to some embodiments of the present invention, the battery modules are located above the heat exchanger plates and across adjacent two Between a support plate, the both ends of the battery modules are installed with the support plate respectively；The battery modules are changed with described The heat conductive silica gel of a plurality of setting spaced apart is folded between hot plate.

According to some embodiments of the present invention, the battery pack further include: cover board, the cover board are connected to the side frame End, be folded with sealing strip between the cover board and the side frame, the sealing strip has aduncate evacuation section, institute State and be connected between cover board and the side frame by connection structure, the connection structure be located at it is described evacuation section outside and with institute Sealing strip is stated to be spaced apart.

According to some embodiments of the present invention, the cover board is equipped with the seal groove away from side frame recess, the sealing strip It is arranged in the seal groove, the seal groove includes multiple straight-line groove section and escape groove section for being staggered and being sequentially connected, The connection structure is connected to the outside of the escape groove section, the prolonging at least partially along the straight-line groove section of the connection structure It stretches direction and the straight-line groove section face is arranged.

According to some embodiments of the present invention, the cover board includes: upper cover, the upper surface of the upper cover and the side frame It is connected, the battery modules are installed in the accommodation space that the upper cover, the side frame, the bottom deck assembly limit；Bottom Backplate, the bottom backplate are connected and are located at the lower section of the bottom deck assembly with the lower surface of the side frame.

According to some embodiments of the present invention, the bottom backplate is spaced apart to limit protection chamber with the bottom deck assembly, And it is described protection it is intracavitary be filled with buffer fillings object.

Detailed description of the invention

Fig. 1 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Fig. 2 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Fig. 3 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Fig. 4 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Fig. 5 is the partial sectional view of battery pack according to an embodiment of the present invention；

Fig. 6 is the partial sectional view of battery pack according to an embodiment of the present invention；

Fig. 7 is the partial sectional view of battery pack according to an embodiment of the present invention；

Fig. 8 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Fig. 9 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Figure 10 is the partial sectional view of battery pack according to an embodiment of the present invention；

Figure 11 is the structural schematic diagram of assignment of traffic component according to an embodiment of the present invention；

Figure 12 is the structural schematic diagram of assignment of traffic component according to an embodiment of the present invention；

Figure 13 is the partial sectional view of battery pack according to an embodiment of the present invention；

Figure 14 is the structural schematic diagram of pipe fitting according to an embodiment of the present invention；

Figure 15 is the partial structural diagram of pipe fitting according to an embodiment of the present invention；

Figure 16 is the cross-sectional view of pipe fitting according to an embodiment of the present invention；

Figure 17 is the partial sectional view of pipe fitting according to an embodiment of the present invention；

Figure 18 is the partial structural diagram of pipe fitting according to an embodiment of the present invention；

Figure 19 is the partial structural diagram of battery pack according to an embodiment of the present invention；

Figure 20 is the partial sectional view of battery pack according to an embodiment of the present invention；

Figure 21 is the partial sectional view of battery pack according to an embodiment of the present invention；

Figure 22 is the structural schematic diagram of battery pack according to an embodiment of the present invention；

Figure 23 is the installation diagram of upper cover plate and side frame according to an embodiment of the present invention；

Figure 24 is the position view of sealing strip according to an embodiment of the present invention and connection structure；

Figure 25 is the connection schematic diagram of bottom backplate and side frame according to an embodiment of the present invention；

Figure 26 is the installation diagram of bottom backplate and side frame according to an embodiment of the present invention；

Figure 27 is the installation diagram of bottom backplate and side frame according to an embodiment of the present invention.

Appended drawing reference:

Battery pack 100, side frame 1, bottom deck assembly 2, afflux pipeline 3, cavity 11, heat exchanger plates 21, heat exchanging chamber 211, first End arms 12, the second end arms 13, distance piece 14, support plate 22, patch plate 23, header 31, pipe fitting 32, assignment of traffic component 4, Throttle orifice 41, mainstream cavity 311, branched hole 312, connectivity port 313, endergonic structure 15, safeguard structure 16, reinforcing rib 17, on Shield segment 161, outer shield segment 162, boss 212, overlap edge 314, inserting groove 7, grafting boss 8, guide surface 81, supporting surface 71, Side plate 82, cascaded surface 72, first leg 213, loss of weight chamber 221, the second supporting leg 222, bottom backplate 301 protect chamber 302, end section Discharge orifice 411, middle part throttle orifice 412, connecting tube 321, sealing shroud 322, sealing structure 3221, first structure 3222, notch 32221, cover body section 3223, seal section 3224, sealing ring 32211, groove 32212, axial limiting flange 3225, mounting groove 3211, battery modules 9, upper cover plate 10, sealing strip 101, evacuation section 1011, connection structure 102, seal groove 103, straight-line groove section 1031, escape groove section 1032, flange 104 protects boss 105, buffer fillings object 106, absorbing energy layer 1061, foamed cotton layer 1062, hair Steep plate 1063.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two It is a, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art, The specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower" It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above " Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of First feature horizontal height is less than second feature.

Battery pack 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Figure 27.

Battery pack 100 according to an embodiment of the present invention may include: bottom deck assembly 2, afflux pipeline 3 and battery modules 9.

As Figure 1-Figure 4, bottom deck assembly 2 includes the heat exchanger plates 21 being arranged alternately and support plate 22, further, Duo Gehuan Hot plate 21 is staggered in the horizontal direction with multiple support plates 22.Wherein, support plate 22 is used to support fixed battery modules 9, phase Two adjacent support plates 22 are fixedly connected with the same battery modules 9, so that battery modules 9 can be across heat exchanger plates 21 and can be with Heat exchanger plates 21 are close to setting, to realize effective heat exchange.

Since the deployment scenarios in conventional batteries packet 100 are to fix heat exchanger plates 21 in support plate 22, set on heat exchanger plates 21 Battery modules 9 are set, cause 100 weight of battery pack larger, the space occupied is larger.For this purpose, the embodiment of the present invention supports part Plate 22 is replaced with heat exchanger plates 21, and making heat exchanger plates 21 both has the function of heat exchange, also while being provided with support battery modules 9 Effect the case where two kinds of functions, can make the overall structure of battery pack 100 more compact, effectively reduce battery to realize a structure Number of structures in packet 100, and then reduce the weight of battery pack 100.

As shown in Figure 8 and Figure 9, heat exchanger plates 21 have a heat exchanging chamber 211 for the heat transferring medium that circulates, header 31 be suitable for Heat exchanging chamber 211 is connected to, and the extraneous heat transferring medium entered in header 31 is input in heat exchanger plates 21, and then is realized to battery Effective heat exchange of mould group 9.

As Figure 1-Figure 4, the both ends of battery modules 9 are fixedly connected with two support plates 22 respectively, and two support plates Heat exchanger plates 21 are connected between 22.Battery modules 9 are located at the top of heat exchanger plates 21 and across between two adjacent support plates 22, The both ends of battery modules 9 are respectively arranged in support plate 22, so that battery modules 9 can be across heat exchanger plates 21 and can be with heat exchanger plates 21 are close to setting, to realize effective heat exchange.

Also, it is connected between battery modules and heat exchanger plates by heat-conducting medium.Heat transfer effect can be made more preferable as a result,.

Battery pack 100 according to an embodiment of the present invention, the battery pack 100 is by heat-exchange system and the intracorporal bottom plate group of battery case Part 2 is combined together, so that the overall structure of battery pack 100 is more compact, can effectively realize the purpose of 100 loss of weight of battery pack, and And Battery case can be enable to exchange hot systems and effectively protected.

In conjunction with Figure 20 and embodiment illustrated in fig. 21, frame ontology includes the first end arms 12, the second end arms 13 and distance piece 14, distance piece 14 is connected between the first end arms 12, the second end arms 13, wherein the first end arms 12, the second end arms 13, distance piece 14 limit downward open cavity 11, wherein and bottom deck assembly 2 includes staggered heat exchanger plates 21 and support plate 22, and the The lower end of one end arms 12 is higher than the lower end of the second end arms 13 so that the lower end of cavity 11 is inwardly opened wide, in order to enable heat exchanger plates 21 It is enough to extend into cavity 11 from unlimited and be connected with header 31, it is exchanged heat with realizing in entire 100 heat-exchange system of battery pack Medium circulates.

Further, as shown in figure 20, the first end arms 12 and the upper surface phase of heat exchanger plates 21 and support plate 22 of side frame 1 Even, in order to which heat exchanger plates 21 and support plate 22 can block cavity open opening inwardly completely, and then cavity is realized It is fully sealed, is flowed into 9 installation space of battery modules to avoid from the heat transferring medium leaked out in header 31 from this opening, To guarantee the safety of battery modules 9.

Further, since support plate 22 does not need to connect with the branched hole 312 of header 31, the end of support plate 22 Portion can directly be connected with the second end arms 13 of side frame 1, to complete the complete of cavity 11 in the opening of corresponding position closed cavity 11 It is hermetically sealed.Wherein, support plate 22 also act as support header 31 effect so that header 31 can more stable setting exist In cavity.

As shown in figure 21, it since the end of heat exchanger plates 21 needs to be directly connected to the branched hole 312 of header 31, changes Hot plate 21 can not extend at the second end arms 13, and therefore, bottom deck assembly 2 is also provided with patch plate 23, so that patch plate 23 connects Second end arms 13 of side frame 1 and the end of heat exchanger plates 21, in the opening of corresponding position closed cavity 11.Also, patch Plate 23 also functions to the effect of support header 31, so that the setting that header 31 can be more stable is in cavity.

Preferably, it is suitable for carrying out using structure glue resistant to high temperature between header 31 and support plate 22 and patch plate 23 indirect It is fixed, to reach better fixed effect.

Further, referring to Figure 21, patch plate 23 has first end, the second end being oppositely arranged, and the be oppositely arranged Three ends and the 4th end, above-mentioned four end are the four edges of patch plate 23.Wherein, the first end (lateral outer ends) of patch plate 23 and side Second end arms 13 of frame 1 is connected, and the second end (lateral inner ends) of patch plate 23 is connected with the end of heat exchanger plates 21, and patch plate 23 Third end and the 4th end (longitudinal both ends) at least one end be connected with adjacent support plate 22.Enable patch plate 23 as a result, Enough all components with periphery are attached, and form an entirety, and then keep the integral strength of Battery case bigger.

According to some embodiments of the present invention, as shown in figs 20 and 21, endergonic structure 15, endergonic structure 15 are used for ABSORPTION EDGE Frame ontology generated energy when colliding can effectively protect frame ontology, and then the header of protecting border body interior setting 31, the impact resistant capability of battery pack can be effectively improved.

Further, endergonic structure 15 is cavity type and is located on the inside of the top of cavity 11, be more convenient for as a result, setting and energy-absorbing Effect is more preferable, with effective protection cavity 11 from the damage of shock.And it also can effectively reduce the weight of frame ontology, realize electricity Wrap light-weighted purpose in pond.

Specifically, endergonic structure 15 is separated with cavity 11 by rib, and the cavity of endergonic structure 15 is cut with triangle Face.The stability of endergonic structure 15 can be made more preferable as a result, and energy absorption also increased.

Referring to Figure 20 and Figure 21, side frame 1 further include: safeguard structure 16 is for protecting 302 body 11 of chamber, to avoid the external world Shock damages cavity 11, can effectively protect the header 31 being arranged in cavity 11 and cavity 11, and then makes heat exchange system System can be safely and steadily run.

Further, safeguard structure 16 includes upper shield segment 161 and outer shield segment 162, and upper shield segment 161 is located at the upper of cavity Side, to prevent the shock above frame ontology to damage caused by cavity 11, and outer shield segment 162 is located at the outside of cavity To prevent the shock from frame outer body to damage caused by cavity 11.Safeguard structure 16 can be from the upper of cavity 11 as a result, Cavity 11 is protected in side and outside, and then improves the safety of cavity 11 and the peace of its internal header 31 being arranged Quan Xing.

Specifically, upper shield segment 161 and outer shield segment 162 are cavity type.Be more convenient for as a result, setting and energy-absorbing effect more It is good.And it also can effectively reduce the weight of frame ontology, realize the light-weighted purpose of battery pack.

As shown in Figure 20 and Figure 21, reinforcing rib 17 is equipped in the cavity of upper shield segment 161 and outer shield segment 162 with will be empty Chamber is divided into multiple, and reinforcing rib 17 can play certain booster action to upper shield segment 161 and outer shield segment 162, so that upper protection The integral strength of section 161 and outer shield segment 162 is bigger, and the big cavity of upper shield segment 161 and outer shield segment 162 is divided into more More areolas can further promote the protection effect and energy-absorbing effect of shield segment 161 and outer shield segment 162, make frame sheet Body impact resistant capability is more preferable, its internal header 31 being arranged with effective protection, and the entirety of protection battery pack.

According to some embodiments of the present invention, as shown in Fig. 8 and Figure 19, afflux pipeline 3 includes header 31 and pipe fitting 32, header 31 is arranged in the end of heat exchanger plates 21 and is connected to heat exchanging chamber 211, in order to be extraneous enter in header 31 Heat transferring medium be transported in heat exchanging chamber 211, with realize heat exchanger plates 21 heat exchange effect.And between two adjacent headers 31 It is connected by pipe fitting 32, multiple headers 31 and heat exchanger plates 21 is connected to become a kind of complete heat exchange system, i.e., it is hot Management system.A more compact heat management system of overall structure is formed as a result,.

Further, each heat exchanger plates 21 are equipped with multiple heat exchanging chambers 211 arranged side by side, and the both ends of heat exchanger plates 21 are all connected with There is header 31, multiple heat exchanging chambers 211 are connected in parallel by header 31, the header 31 between two adjacent heat exchanger plates 21 It is connected by pipe fitting 32, being connected in parallel between the heat exchanging chamber 211 to realize two neighboring heat exchanger plates 21 makes to own as a result, All heat exchanging chambers 211 of heat exchanger plates 21, which are respectively formed to be connected in parallel, is thought of as a complete heat management system.

Specifically, a plurality of heat exchanging chamber disposed in parallel 211 is all had in each heat exchanger plates 21, wherein heat transferring medium exists Inside multiple heat exchanger plates 21, the same direction along multiple heat exchanging chambers 211 flows to the other end from one end of multiple heat exchanger plates 21, i.e., more A heat exchanging chamber 211 is to be arranged in parallel.Can enable as a result, heat transferring medium it is more uniform flow through each heat exchanging chamber 211, avoid There is the phenomenon that local eddy currents, and the heat transfer effect of heat exchanger plates 21 everywhere can be enable more balanced, and then make heat exchanger plates 21 Heat transfer effect it is more preferable.

As shown in Fig. 8, Figure 14, pipe fitting 32 with header 31 for connecting to be connected to adjacent heat exchanger plates 21, wherein close Big envelope 322 is set in outside the end of connecting tube 321, and connecting tube 321 is for connecting two adjacent headers 31, and sealing shroud 322 are used for the junction of sealed joint pipe 321 and header 31.

Optionally, sealing shroud 322 can be rubber or silica gel, and connecting tube 321 can be metal tube or plastic tube, and the two can lead to It crosses glue bonding or directly injection molding is integrated, stablized with the whole installation of the connective stability of both guarantees and pipe fitting 32 Property.Wherein, plastic tube can eliminate the influence of extruding force bring in the extrusion process of side, to guarantee the sealing of connecting tube 321 Performance, and then can guarantee the reliability of pipe fitting 32.

Further, 4 and Figure 15 referring to Fig.1, sealing shroud 322 are equipped with the sealing structure 3221 and the of axially spaced arrangement One structure 3222, wherein sealing structure 3221 is used for the junction of sealed joint pipe 321 and header 31, to be matched by interference The mode of conjunction realizes sealing.Due to having used the mode of interference fit, even if pipe fitting 32 and header 31 are same after installation There are little deviations for axis degree, also can guarantee sealing effect.

Also, compared to traditional clip or the assembly method of quick coupling, installation by the way of such interference fit Space requirement is lower, structure is simple, install convenient, and advantage of lower cost.

Referring to 14- Figure 18, first structure 3222 is used in the assembling process of pipe fitting 32 and header 31 rise guiding and makees With, with both ensure can centering installation, ensure that installation accuracy and installation accuracy, and then effectively improve therebetween The leakproofness of connection.

Further, first structure 3222 includes the multistage of the circumferentially spaced arrangement along sealing shroud 322, multistage first structure 3222 are arranged around sealing shroud 322 to form notch 32221 between adjacent two sections.Wherein, when pipe fitting 32 and header It, can be by touching sealing structure 3221 from notch 32221 from the external world after 31 are installed.Setting notch 32221 can be real as a result, Existing airtight detection function, the phenomenon that will leaking air from sealing structure 3221 when 3221 seal failure of sealing structure, because This testing staff detection instrument can be used to pass through from notch 32221 and touch sealing structure 3221 in order to detect sealing knot 3221 air-tightness of structure, to judge whether sealing structure 3221 is intact.

In conjunction with Figure 14-embodiment illustrated in fig. 18, sealing shroud 322 includes along axially connected set body section 3223 and seal section 3224, sealing structure 3221 is set to sealing of the seal section 3224 for realizing pipe fitting 32 and header 31, first structure 3222 It is used to guarantee the centering installation of the two set on set body section 3223, as a result, by the way that sealing shroud 322 is reasonably divided into two parts, The structure with different function and effect to be integrated on same sealing shroud 322, to realize the concentrated setting of structure, can make The overall structure of pipe fitting 32 is more compact.

Wherein, the diameter of seal section 3224 gradually becomes smaller from centre to both ends.Thereby, it is possible to the peaces at each position of effective compensation Tolerance is filled, to realize better seal effect.

Further, 4- Figure 18 referring to Fig.1, first structure 3222 is spaced apart with seal section 3224, to avoid first structure 3222 centering impacts the cooperation sealing of sealing structure 3221 and header 31 on seal section 3224, and also avoids Sealing structure 3221 impacts the guiding centering effect of first structure 3222 so that the two in functional and structure not It will appear the phenomenon that interfering with each other.

As shown in Figure 14-Figure 18, sealing structure 3221 includes the multiple sealing rings 32211 sequentially arranged along axial direction, distribution It is greater than the diameter for being distributed in the sealing ring 32211 at both ends in the diameter of intermediate sealing ring 32211.It is multiple by being arranged as a result, Sealing ring 32211 to realize that the multistage between pipe fitting 32 and header 31 seals, can so that the sealing effect is better, and by close The different setting of 32211 diameter of seal ring can the concentricity between each component of effective compensation guarantee installation to compensate location tolerance Precision.

Further, 5, Figure 17 and Figure 18 referring to Fig.1 are equipped with the groove of arc between two adjacent sealing rings 32211 32212.Be arranged groove 32212 be sealing ring 32211 compression reserved space so that sealing ring 32211 can with afflux 31 inner wall of pipe sufficiently compresses when squeezing, and then it is closer so that sealing ring 32211 is bonded with 31 inner wall of header, makes to seal Effect is more preferable.

In conjunction with Figure 14 and embodiment illustrated in fig. 15, first structure 3222 is greater than sealing ring 32211 along axis along axial thickness To thickness.It is installed since first structure 3222 will carry out guiding cooperation with the inner wall of header 31 with the centering for realizing the two, Therefore, the intensity to be arranged of first structure 3222 is more relatively large, thus the thickness of first structure 3222 is arranged opposite Sealing ring 32211 is larger.

As shown in Figure 14 and Figure 15, sealing shroud 322 is additionally provided with axial limiting flange 3225, and axial limiting flange 3225 can be Play position-limiting action in the assembling process and use process of pipe fitting 32 and header 31, and after the assembly is completed, axial limiting Flange 3225 is suitable for mutually only supporting with the outer end wall of header 31, to play the role of limit, guarantees pipe fitting 32 always in good Good sealing state.

Specifically, sealing structure 3221, first structure 3222, axial limiting flange 3225 are along axial direction from sealing shroud 322 End arrangement spaced inward, interfering with each other to avoid three's structure and functionally.Wherein, axial limiting flange 3225 is used for The end face of pipeline to be connected (header 31) is compressed, the radian of axial limiting flange 3225 is less than 270 °, to be formed through mouth, So that notch 32221 at least partly can with region (through hole) face for not setting axial limiting flange 3225, in order to examine Survey personnel be able to use detection instrument sequentially pass through axial limiting flange 3225 and first structure 3222 to sealing structure 3221 into Row sealing propertytest.

Other embodiments according to the present invention, as exemplified in figs, 321 end sections of connecting tube be recessed inwardly with Mounting groove 3211 is formed, sealing shroud 322 is set in mounting groove 3211, to realize stable installation.Wherein, sealing shroud 322 can Using EPDM material integrated injection molding in mounting groove 3211, to realize being stably connected with for the two.By by the two integrated injection molding at Type can avoid the case where losing in 322 neglected loading of sealing shroud and transport process occur, will not show what loosening occurred in vibration processes As there is the probability leaked also very little.

Also, sealing structure 3221 and first structure 3222 protrude from mounting groove 3211, in order to in header 31 Wall is to cooperation is only supported, to realize stable sealing function.

Further, in conjunction with Figure 16-embodiment illustrated in fig. 18, connecting tube 321 is equipped with axial limiting flange 3225.I.e. axial limit Position flange 3225 has been formed directly on the outer peripheral surface of connecting tube 321, to guarantee that stability is arranged in axial limiting flange 3225.Axis Position-limiting action can be played in the assembling process and use process of pipe fitting 32 and header 31 to defining flange 3225, and filled With after the completion, axial limiting flange 3225 is suitable for mutually only supporting with the outer end wall of header 31, to play the role of limit, guarantees pipe Connector 32 is in good sealing state always.

Wherein, sealing structure 3221, first structure 3222, axial limiting flange 3225 are along axial direction from the end of connecting tube 321 Portion's arrangement spaced inward, interfering with each other to avoid three's structure and functionally.And axial limiting flange 3225 is for compressing The end face of pipeline (header 31) to be connected, the radian of axial limiting flange 3225 is less than 270 °, to be formed through mouth, so that Notch 32221 at least partly can with region (through hole) face for not setting axial limiting flange 3225, in order to detect people Member be able to use detection instrument sequentially pass through axial limiting flange 3225 and first structure 3222 sealing structure 3221 is carried out it is close The detection of envelope property.

Referring to Fig. 8 and Figure 19, heat exchanger plates 21 are equipped with heat exchanging chamber 211 for the coolant liquid that circulates with to being arranged in heat exchanger plates 21 Battery modules 9 exchange heat, the open end of heat exchanging chamber 211 is connected with header 31, and header 31 is suitable for entering outside Coolant liquid in battery pack 100 is shunted, to be evenly distributed in each heat exchanging chamber 211.Wherein, the both ends of connecting tube 321 It is arranged with sealing shroud 322 (4 and Figure 16 referring to Fig.1), is connected between two headers 31 by pipe fitting 32, it is multiple to realize The series connection of header 31 and the parallel connection of multiple heat exchanging chambers 211 (referring to Fig. 8 and Figure 19).

As shown in figure 8, specifically, header 31 is set in outside sealing shroud 322, to realize the stabilized seal connection of the two, And the connection distance that the two can be shortened, so that the overall structure of 100 heat-exchange system of battery pack is more compact.

According to some embodiments of the present invention, further, embodiment referring to figure 11-13, to make each heat exchanging chamber The flow of heat transferring medium in 211 can to average reasonable distribution, the embodiment of the present invention is provided with assignment of traffic component 4, And assignment of traffic component 4 is made to block the open end in heat exchanging chamber 211, to realize the effect averagely shunted.

Wherein, assignment of traffic component 4 has the throttle orifice 41 being connected to heat exchanging chamber 211.Specifically, changing in header 31 Thermal medium needs to flow into heat exchanging chamber 211 by throttle orifice 41, therefore can pass through 211 institute of heat exchanging chamber of change different location The aperture of corresponding throttle orifice 41 and quantity are reasonably shunted and are throttled to realize, so as to flow into each heat exchanging chamber 211 The flow of heat transferring medium can be equal.

As shown in figure 13, header 31 be connected with heat exchanger plates 21 so that assignment of traffic component 4 can be stable be folded in collection Between flow tube 31 and heat exchanger plates 21, to play stable current balance function.

Referring to Fig.1 1, heat exchanger plates 21 are equipped with multiple longitudinally through heat exchanging chambers 211, to realize the circulation of heat transferring medium and change Heat, assignment of traffic component 4 are equipped with multiple groups throttle orifice 41, and multiple heat exchanging chambers 211 are corresponded with multiple groups throttle orifice 41, and multiple change Hot chamber 211 is connected in parallel by multiple branched holes 312 of header 31.Hereby it is achieved that using same header 31 to multiple Heat exchanging chamber 211 carries out the purpose of feed flow, and each heat exchanging chamber 211 can be made to be to be arranged in parallel.

In short, be exactly the other end that heat transferring medium flows to heat exchanging chamber 211 from the same end of multiple heat exchanging chambers 211, Heat exchange can be made more balanced, the phenomenon that avoiding the occurrence of local eddy currents and the normal heat exchange for influencing heat exchanger plates 21, and then heat exchanger plates can be made 21 heat transfer effect is more preferable.

As figs 11-13, assignment of traffic component 4 is plate, and as its name suggests, assignment of traffic component 4 is relatively thin component, In order to be folded between header 31 and heat exchanger plates 21, wherein throttle orifice 41 runs through along the thickness direction of assignment of traffic component 4 Assignment of traffic component 4, after being folded between header 31 and heat exchanger plates 21 in order to assignment of traffic component 4, throttle orifice 41 can With 211 face of branched hole 312 and heat exchanging chamber, and then throttle orifice 41 is made to can be realized effective throttling action.

Referring to Fig.1 3, multiple branched holes 312 that header 31 has mainstream cavity 311 and is connected to mainstream cavity 311 are more A branched hole 312 is arranged with multiple 41 faces of throttle orifice, and each heat exchanging chamber 211 is connected to at least one branched hole 312, so that collection Heat transferring medium in flow tube 31 can be shunted by branched hole 312 to flow at assignment of traffic component 4, by throttle orifice 41 Current balance function and be averaged and be diverted in each heat exchanging chamber 211, to realize the balanced heat exchange of heat exchanger plates 21.

According to some embodiments of the present invention, quantity and/or position of the assignment of traffic component 4 by adjusting throttle orifice 41 And/or aperture adjusts flow.Therefore, need to design different assignment of traffic components 4 for multiple heat exchanger plates 21 multiple to meet The balanced purpose shunted of heat exchanger plates 21, makes the heat transferring medium flow in each heat exchanging chamber 211 can be equal, to reach more balanced Heat transfer effect.

Referring to Fig.1 1, to realize the effective throttling action of throttle orifice 41, the embodiment of the present invention is by the circulating face of throttle orifice 41 The circulation area less than 211 open end of heat exchanging chamber of product setting, not had to by the pore size for changing throttle orifice 41 to realize Throttling action.

Wherein, the circulation area in assignment of traffic component 4 positioned at the throttle orifice 41 at both ends, which is greater than, is located in the middle throttle orifice 41 circulation area.When flowing through same header 31 due to heat transferring medium, closer to the fluid pressure of 31 end position of header Smaller, the flow of heat transferring medium is smaller.Conversely, the fluid pressure at 31 middle part of header is maximum, coolant rate is maximum, therefore will Being greater than for circulation area setting positioned at the throttle orifice 41 at 4 both ends of assignment of traffic component is located in the middle the circulating face of throttle orifice 41 Product to realize reasonable throttling action, and then makes by after 41 throttling action of throttle orifices different on assignment of traffic component 4, each The flow of heat transferring medium in heat exchanging chamber 211 can reach balanced, effectively to solve electricity caused by 21 non-uniform temperature of heat exchanger plates The performance and life problems of Chi Mo group 9.

As is illustrated by figs. 11 and 12, the multiple groups throttle orifice 41 of assignment of traffic component 4 includes the end throttle orifice set on both ends 411 and set on intermediate middle part throttle orifice 412, end throttle orifice 411 is corresponding with the heat exchanging chamber 211 at 21 both ends of heat exchanger plates, middle part Throttle orifice 412 is corresponding with other heat exchanging chambers 211 of heat exchanger plates 21, and 41 number of throttle orifice of every group of end throttle orifice 411 is less than every Group middle part throttle orifice 412 41 number of throttle orifice, with cooperate end throttle orifice 411 described above books circulation area and in The flow of the small circulation area of portion's throttle orifice 412, the heat transferring medium for inputting each throttle orifice 41 to heat exchanging chamber 211 being capable of phase Deng, and then realize the purpose of the balanced heat exchange of heat exchanger plates 21.

In conjunction with Fig. 8 and embodiment illustrated in fig. 12, at least one header 31 in multiple 21 components of heat exchanger plates, which has, to be used for The connectivity port 313 (water inlet end) being connected to external water route, in assignment of traffic component 4 total circulation area of whole throttle orifices 41 with Assignment of traffic component 4 to connectivity port 313 distance increase and increase (three groups of assignment of traffic components 4 in Figure 12 on to Lower is respectively successively to be arranged far from connectivity port 313).

In other words, a header 31 in multiple 21 components of heat exchanger plates has the connecting pin for being connected to external water route Mouth 313, the circulation area and assignment of traffic component 4 of the throttle orifice 41 of multiple assignment of traffic components 4 arrive at a distance from connectivity port 313 It is positively correlated.

Hydraulic due to the heat transferring medium in heat-exchange system is constantly reduced along the liquid flow direction of heat transferring medium, is leaned on Closely the position of heat-exchange system general import (connectivity port 313) is hydraulic larger, and the flow of heat transferring medium is also just larger, therefore, is The consistency of each 21 flow of heat exchanger plates of adjusting, makes assignment of traffic corresponding to the heat exchanger plates 21 closer to connectivity port 313 The circulation area of throttle orifice 41 on component 4 is minimum, makes 21 institute of heat exchanger plates in downstream along the flow direction of heat transferring medium later The circulation area of throttle orifice 41 on corresponding assignment of traffic component 4 is successively greater than flow corresponding to the heat exchanger plates 21 of upstream point Circulation area with the throttle orifice 41 on component 4.

Hereby it is achieved that in the heat-exchange system of battery pack 100 each 21 flow distribution of heat exchanger plates homogeneity, and then effectively solve It has determined system performance and life problems caused by each 21 non-uniform temperature of heat exchanger plates.

In conclusion this patent is between heat exchanger plates 21 and header 31 by increasing assignment of traffic component 4, with effectively real The now unification of each 21 flow of heat exchanger plates.Wherein, each heat exchanger plates 21 and pipe fitting 32 are completely the same, generally applicable, only need to change The deployment scenarios of throttle orifice 41 on assignment of traffic component 4 are conducive to handling of goods and materials, reduce later period maintenance expense, are setting Meter, manufacture, assembly, each stage such as after sale can effectively improve efficiency, can effectively reduce cost.

As shown in figure 13, heat exchanging chamber 211 is equipped with outwardly directed in the open ended of heat exchanger plates 21, the end of heat exchanger plates 21 Boss 212, heat exchanging chamber 211 run through boss 212, in order to the connection of heat exchanging chamber 211 and throttle orifice 41 and branched hole 312.

Further, assignment of traffic component 4 is installed on the end face of boss 212, to realize the patch of throttle orifice 41 Yu heat exchanging chamber 211 Face is closed, header 31 has the overlap edge 314 protruded outwardly, and overlap edge 314 is connected with the side of boss 212, to realize collection Flow tube 31 is stably connected with heat exchanger plates 21.

Preferably, the outer profile of the cross section of boss 212 is identical as the outer profile of the cross section of assignment of traffic component 4, with It can be also fixed with the side of assignment of traffic component 4 while overlapping fixed with boss 212 convenient for overlap edge 314, and Enable assignment of traffic component 4 is more stable to be folded between boss 212 and header 31, to avoid assignment of traffic component 4 It shakes and influences being interconnected for branched hole 312, throttle orifice 41 and heat exchanging chamber 211.

Embodiment as one preferred, referring to Fig.1 3, overlap edge 314 includes at least two be oppositely arranged, and two are taken Edge fit 314 is connected with two sides (upper and lower surfaces) of boss 212 respectively, and boss 212 is clamped in two overlap joints Between side 314, and then the sandwiched for keeping boss 212 more stable is fixed between two overlap edges 314, to realize header 31 are stably connected with heat exchanger plates 21.

Also, the end of cascaded surface 72 and overlap edge 314 between boss 212 and the side of heat exchanger plates 21 is equipped with weldering Groove is connect in order to be welded and fixed.Preferably, overlap edge 314 is connected with heat exchanger plates 21 by laser welding.Using laser welding Mode can guarantee that the weld seam of welding will not generate interference with other parts, and this welding structure has a wide range of application, weldering Intensity height is connect, welding procedure is stablized, product

In conjunction with Fig. 5-embodiment illustrated in fig. 7, it is connected between heat exchanger plates 21 and support plate 22 by connected structure grafting.By This, can make the assembly of heat exchanger plates 21 and support plate 22 simpler, conveniently.It can effectively avoid traditional welding process and individually consolidate Determine the setting of part, and then the overall cost of battery pack 100 can be reduced.

Also, the flatness after being also more convenient for guaranteeing that heat exchanger plates 21 are connect with support plate 22 in such a way that grafting is connected, Enable support plate 22 and heat exchanger plates 21 that support preferably is fixed to battery modules 9, and also ensures 21 energy of heat exchanger plates It is enough stable to carry out being close to setting with battery modules 9, to guarantee heat transfer effect.

As shown in Figure 5-Figure 7, connected structure includes: inserting groove 7 and grafting boss 8.Optionally, heat exchanger plates 21 and support plate First in 22 is equipped with inserting groove 7, and second in heat exchanger plates 21 and support plate 22 is equipped with grafting boss 8, and grafting boss 8 is inserted Enter inserting groove 7.In other words, it may be provided with inserting groove 7 on heat exchanger plates 21, be just provided with grafting boss 8 in corresponding support plate 22. It is also possible to be provided with grafting boss 8 on heat exchanger plates 21, inserting groove 7, above two shape is just provided in corresponding support plate 22 The achievable heat exchanger plates 21 of formula are mating with support plate 22.

The end face of embodiment as one preferred, grafting boss 8 is Nian Jie by viscose glue with the bottom wall of inserting groove 7.As a result, Installation fixation procedure can be made simpler, and also can avoid fastening the two using individual fastener, can be reduced as a result, Manufacturing cost.

Certainly, grafting boss 8 can also be attached fixation with inserting groove 7 by way of interference fit.

Further, it as shown in figure 5, being equipped with guide surface 81 between the end face of grafting boss 8 and the side of grafting boss 8, leads It play the guiding role in the process to face 81 in the mating of the two, can enable grafting boss 8 is more convenient to be accurately installed to In inserting groove 7, to complete being connected and fixed for the two.

According to some embodiments of the present invention, referring to Fig. 5, inserting groove 7 opens wide in the horizontal direction, and grafting boss 8 is towards level Direction protrusion.Specifically, the upper surface of grafting boss 8 is relative under second in heat exchanger plates 21 and support plate 22 upper surface Recessed, the lower surface of grafting boss 8 is relative to second lower surface fovea superior in heat exchanger plates 21 and support plate 22, so that heat exchanger plates 21 is concordant with the upper and lower surface of support plate 22.

It is more convenient can to make grafting installation process as a result, and support plate 22 and heat exchanger plates 21 can be made to be arranged relatively It is thinner, to reduce the overall weight of battery pack 100.

As shown in figure 5, inserting groove 7 is located at first side in heat exchanger plates 21 and support plate 22, grafting boss 8 is located at Second side in heat exchanger plates 21 and support plate 22.Since heat exchanger plates 21 are to be plugged and fixed in the horizontal direction with support plate 22 , therefore the both ends of heat exchanger plates 21 and/or support plate 22 are arranged in order to realize level in inserting groove 7 and/or grafting boss 8 The grafting in direction, and the overall structure after the two grafting can be made more compact.

Other embodiments according to the present invention, referring to figure 6 and figure 7, inserting groove 7 are opened wide towards vertical, and grafting boss 8 is towards perpendicular To protrusion.In other words, support plate 22 is plugged and fixed along the vertical direction with heat exchanger plates 21.

Further, first (one of them) upper surface in support plate 22 and heat exchanger plates 21 is equipped with the supporting surface of sinking 71, and inserting groove 7 is set to supporting surface 71.Second (another) in support plate 22 and heat exchanger plates 21 is equipped in the horizontal direction The lower surface of the side plate 82 of stretching, side plate 82 is equipped with downwardly projecting grafting boss 8, and side plate 82 is supported in supporting surface 71.

Stable support connection is all realized in transverse direction and longitudinal direction as a result,.I.e. grafting boss 8 and inserting groove 7 is vertical The cross spacing between heat exchanger plates 21 and support plate 22 is realized to grafting to connect, and the mutual support of supporting surface 71 and side plate 82 Heat exchanger plates 21 and the longitudinal limit of support plate 22 are realized, and then it is more steady so that heat exchanger plates 21 is connect with support plate 22 Property.

According to some embodiments of the present invention, first (one of them) upper surface in support plate 22 and heat exchanger plates 21 It is connected between supporting surface 71 by cascaded surface 72, cascaded surface 72 and supporting surface 71 are at obtuse angle, the upper surface of side plate 82 and side plate 82 side is at an acute angle.It is arranged in parallel hereby it is achieved that the side of side plate 82 is opposite with cascaded surface 72, in order to the spelling of the two It connects, can be in the same plane with heat exchanger plates 21 and the upper surface of support plate 22, so as to be supported on heat exchanger plates 21 and support plate It can be more uniformly stressed everywhere in battery modules 9 on 22, and then ensure that the mounting stability of battery modules 9.

And, it is ensured that heat exchanger plates 21 can carry out being close to setting everywhere with battery modules 9, to guarantee that overall heat exchange is imitated Fruit.

As shown in fig. 7, cascaded surface 72 is parallel with the side of side plate 82 and is spaced apart setting, the side of support plate 22 and heat exchange The side of plate 21 is also spaced apart setting.Interval is the case where surplus of design is to prevent Assembly Interference at above-mentioned two, into And it ensure that heat exchanger plates 21 and the assembly of support plate 22 and reliability and stability.

Optionally, inserting groove 7 and grafting boss 8 are fixed or inserting groove 7 and grafting boss by the way of interference fit 8 are weldingly connected by cold welding, then inserting groove 7 and grafting boss 8 be adhesively fixed by viscose glue.It can be according to battery pack 100 Interior heat exchanger plates 21 and the specific facilities of support plate 22 reasonably select above-mentioned three kinds of fixed forms, better in order to reach Fixed effect.

As shown in Figure 10, be provided with bottom backplate 301 below bottom plate, the lower surface of the upper surface of bottom backplate 301 and bottom plate it Between limit protection chamber 302, and protect chamber 302 in be filled with buffer fillings object 106.Bottom backplate 301 plays the work of protection bottom plate With being damaged to avoid the shock from the lower section of battery pack 100 to bottom plate, and protect chamber 302 and be arranged inside slow Filler 106 is rushed with certain energy-absorbing buffering effect, protective action can be further functioned as.

Further, the lower surface of heat exchanger plates 21 is equipped with first leg 213, and the first supporting leg is supported on heat exchanger plates 21 and bottom is protected It is connected and fixed between plate 301 and with bottom backplate 301, to play the role of support reinforcing, bottom backplate 301 and floor is made to connect into one A entirety, and then keep the integral strength of battery pack 100 bigger.Wherein, first leg 213 is arranged in a staggered manner with heat exchanging chamber 211, to keep away First leg 213 is compressed into heat exchanging chamber 211 when exempting from the impact of 100 lower part of battery pack, with effective protection heat exchanging chamber 211.

Further, support plate 22, which is equipped with loss of weight chamber 221 and the second supporting leg 222, loss of weight chamber 221, can realize support plate 22 Effective loss of weight, the second supporting leg 222 are connected with the lower surface of support plate 22, and the second supporting leg 222 is supported on support plate 22 and bottom backplate It is connected and fixed between 301 and with bottom backplate 301, to play the role of support reinforcing, bottom backplate 301 and floor is made to connect into one It is whole, and then keep the integral strength of battery pack 100 bigger.Wherein, the second supporting leg 222 is arranged in a staggered manner with loss of weight chamber 221, to avoid The impact of 100 lower part of battery pack compresses the second supporting leg 222 into loss of weight chamber 221, with effective protection loss of weight chamber 221.

In conjunction with Fig. 1-embodiment illustrated in fig. 4, battery modules 9 are located at 21 top of heat exchanger plates and across in two adjacent supports Between plate 22, the both ends of battery modules 9 are respectively arranged in support plate 22, so that battery modules 9 can be across heat exchanger plates 21 and energy It is enough to be close to setting with heat exchanger plates 21, to realize effective heat exchange.

According to some embodiments of the present invention, it is folded between battery modules 9 and heat exchanger plates 21 and a plurality of to be spaced apart setting Heat conductive silica gel (not shown).Specifically, heat conductive silica gel is liquid thermal conductivity silica gel, between battery modules 9 and heat exchanger plates 21 Setting heat conductive silica gel has the advantages that first, can play intermediate axle beam action, i.e., between the heat exchanger plates 21 and battery modules 9 There are the heat conductive silica gel of liquid in contact, centre, it not only acts as transmitting energy effect, and plays the role of supporting battery modules 9； Second, it has high temperature resistant and corrosion resistance effect, while having good ductility, can come into full contact with 9 surface of battery modules, So that battery modules 9 exchange heat more evenly everywhere；Third, setting facilitate it is succinct, compared with conventional thermal conductive silicagel pad, liquid thermal conductivity silicon Glue can adjust dosage according to demand, not need manually to cut, and not need large area stickup more, a certain amount of need to can only be covered with whole A space, effectively save material and use space.

It a kind of is led as a result, with thermally conductive and supporting role liquid by being arranged between battery modules 9 and heat exchanger plates 21 Hot silica gel can effectively solve the problems, such as solid conductive heat silicagel pad and 9 bottom insufficient contact of battery modules, while can be according to reality Border demand adjusts position and the thickness of liquid glue, easy to operate.

According to some embodiments of the present invention, as shown in figures 23-27, sealing strip is equipped between cover board and side frame 11 1014, and sealing strip 1014 is opened with for reasonably avoiding the connection structure 1025 that cover board and side frame 11 are connected, it is ensured that Sealing strip 1014 is in reasonable compression space, while guaranteeing the smallest sealed section.

As shown in figure 23, Battery case according to an embodiment of the present invention includes: side board 82 and cover board.

Cover board is connected to the end of side frame 1, wherein the upper and lower ends of side frame 1 are opened wide, in this way, cover board is attached to The upper end of side frame 1 or cover board are connected to the lower end of side frame 1.As shown, cover board includes upper cover plate 10 and bottom backplate 301, upper cover plate 10 is mounted on the upper end of side frame 1, and as shown in figure, figure, bottom backplate 301 is mounted on the lower end of side frame 1. After upper cover plate 10, bottom backplate 301 are respectively arranged in the upper and lower ends of side frame 1 as a result, upper cover plate 10, bottom backplate 301 and side Frame 1 limits installation cavity, and battery modules 9 are mountable in the installation cavity, and upper cover plate 10, bottom backplate 301 and side frame 1 can be right Battery modules 9 play a very good protection, so that battery modules 9 have stable running environment.

Wherein, upper cover plate 10, bottom backplate 301 can flexibly be dismantled with side frame 1, in this way, in 9 failure of battery modules, Upper cover plate 10, bottom backplate 301 and side frame 1 can be separated, then battery modules 9 are maintained or replaced.Upper cover plate 10, bottom shield Plate 301 and side frame 1 can be made of aluminum alloy materials, and aluminum alloy materials lighter weight can reduce the overall weight of Battery case, The impact force outside Battery case can be absorbed simultaneously, guarantee inside battery safety.

Cover board and 1 support clamp of side frame are equipped with sealing strip 101, and sealing strip 101 can make to be had between cover board and side frame 1 The sealing of effect ground guarantees that battery modules 9 are not dry by external environment inside installation cavity to guarantee that Battery case inner space is closed It disturbs.Wherein, side frame 1 is polygonal ring shape structure, sets the sealing of polygonal ring shape structure in the junction of cover board and side frame 1 Item 101, sealing can be effectively performed in each position along cover board Yu the connection direction of side frame 1 as a result, improve battery case The leakproofness and safety of body.

As shown in figure 23, sealing strip 101 is equipped between upper cover plate 10 and side frame 1, so that upper cover plate 10 and side frame 1 connect The place of connecing is effectively sealed against, and as shown in figure, figure, sealing strip 101 is equipped between bottom backplate 301 and side frame 1, so that bottom backplate 301 are effectively sealed against with the junction of side frame 1, in this way, the leakproofness of Battery case and the peace of internal environment can be improved Quan Xing.

Sealing strip 101 has evacuation section 1011, and evacuation section 1011 curves inwardly, as shown, i.e. evacuation section 1011 is towards leaning on Direction bending on the inside of nearly installation cavity, is connected between cover board and side frame 1 by connection structure 102, and connection structure 102, which is located at, keeps away Allow the outside of section 1011, and connection structure 102 is spaced apart with sealing strip 101, in this way, by connection structure 102 by cover board with When side frame 1 is fixedly connected, sealing strip 101 is able to carry out connection structure 102 and effectively avoids, and guarantees while realizing sealing The two can be assembled effectively, and as shown, sealing strip 101 is arranged at least partially around connection structure 102, i.e. sealing strip 101 are arranged along the closer region of connection structure 102 is located at.

As shown in figure 24, evacuation section 1011 is arc, and such as evacuation section 1011 is arc-shaped, so that the evacuation each position of section 1011 Set it is more uniform with the spacing of connection structure 102, guarantee evacuation section 1011 each position can with connection structure 102 keep close The distance of reason avoids generating interference to the assembling process of connection structure 102, improves the reasonability of 101 structure of sealing strip design.

When as a result, being fastened cover board and side frame 1 by connection structure 102, connection structure 102 is to cover board, side The extruding force that frame 1 generates can be such that cover board, side frame 1 and sealing strip 101 fits closely, and enhancing cover board, side frame 1 are to sealing strip 101 squeezing effect, improves the leakproofness of Battery case, and structure is simple, easy for installation.Wherein, connection structure 102 is multiple, Cover board is connected with side frame 1 in multiple positions by multiple connection structures 102, as shown, the surrounding of cover board passes through connection structure 102 are connected with side frame 1, and the middle part of cover board is connected by connection structure 102 with the reinforcing beam of Battery case, improve cover board and side The connective stability of frame 1.

In this way, can be by reasonably being arranged to sealing strip 101,102 position of connection structure, by cover board, side The press depth of frame 1 controls the decrement of sealing strip 101, guarantees that sealing strip 101 is in reasonable compression space, so that cover board It is reliably sealed with side frame 1.

Wherein, connection structure 102 can be tapping screw or stream drilling screw, as shown, cover board has via hole, side frame 1 With threaded hole, connection structure 102 can be threadedly coupled through via hole with threaded hole, so that cover board is connected with side frame 1, and even 102 convenient disassembly of binding structure, assembly efficiency is high, guarantees that cover board is stably connected with side frame 1.Avoid bolt and staking blind hole spiral shell Female use reduces weight, is conducive to the use of system energy densities, and connection structure 102 can be fully automated production, battery Cabinet profile exempts from pre-drilled cavity, avoids the installation of artificial rivet nut column, avoids the installation of cover plate bolt, quality controllable, effect Rate is promoted.

Connection structure 102 is when cover board to be connected with sidewall frame, it is only necessary to which pre-drilled cavity reduces the use of insertion swivel nut, drop Low cost guarantees quality, designs for the special tooth form of aluminum profile, and it is strong that fastening is effectively ensured in the molding of chipless self tapping thread-rolling screw Degree, reaches the balance of bolt material and aluminum profile material, reduces the use of process insertion swivel nut, simplifies installation step, it is simple and It is practical.

In some embodiments, cover board is equipped with seal groove 103, and seal groove 103 is recessed towards the direction away from sidewall frame, such as Shown in figure, figure and figure, seal groove 103 is set to cover board towards the side of side frame 1, and after cover board and side frame 1 assemble, sealing Slot 103 forms closed cavity 11, and sealing strip 101 is set to seal groove 103, stable to be formed between cover board and side frame 1 Sealing structure 3221 guarantees that Battery case effectively seals against.

Wherein, sealing strip 101 is foamed silica gel, i.e., by cover board and side frame 1 after the assembly is completed, cover board and side frame 1 Closed foam chamber is formed at seal groove 103, and then is injected foamed material into seal groove 103 and formed sealing strip 101, and can The injection rate of foamed material is controlled so that the gap between cover board and side frame 1 is filled up completely, and avoids injection rate excessive to broken The leakproofness of bad connection structure 102, raising cover board and side frame 1 guarantees the safety of connection structure 102 simultaneously, and silica gel foams The application of technology is fully automated production, reduces the investment of personnel, reduce the undesirable risk of common sticking double faced adhesive tape, greatly Material cost is reduced greatly, reduces the width in sealing flange face to the maximum extent, reduces weight, optimizes structure.

Seal groove 103 includes escape groove section 1032, and escape groove section 1032 curves inwardly, and evacuation section 1011 is set to escape groove section 1032, escape groove section 1032 is spaced apart with connection structure 102, cover board to be connected with side frame 1 by connection structure 102 When, escape groove section 1032 can rationally avoid connection structure 102, guarantee that cover board and side frame 1 rationally assemble.

As shown in figure 25, seal groove 103 includes straight-line groove section 1031 and escape groove section 1032, straight-line groove section 1031 and evacuation Slot section 1032 is multiple, and multiple escape groove sections 1032 are staggered with multiple straight-line groove sections 1031, and multiple escape groove sections 1032 are sequentially connected with multiple straight-line groove sections 1031, i.e., an escape groove section is equipped between two neighboring straight-line groove section 1031 1032, a straight-line groove section 1031 is equipped between two neighboring escape groove section 1032, wherein straight-line groove section 1031 is along the side of cover board Along extending, escape groove section 1032 is recessed towards the inside of straight-line groove section 1031, and the outside of escape groove section 1032 is equipped with connection structure 102, wherein the surrounding of cover board is connected by multiple connection structures 102 respectively with side frame 1, and multiple escape groove sections 1032 It is arranged correspondingly with multiple connection structures 102, in this way, cover board can be by connecting knot at multiple positions with side frame 1 Structure 102 is connected, and preferable leakproofness is all had at each position.

As shown in figure 24, the extending direction and straight-line groove section at least partially along straight-line groove section 1031 of connection structure 102 1031 faces setting, and as shown, connection structure 102 is at least partially disposed in escape groove section 1032, in this way, cover board with After side frame 1 is installed, connection structure 102 and seal groove 103 are whole along the sky occupied perpendicular to 1031 direction of straight-line groove section Between it is less, i.e., perpendicular to 1031 direction of straight-line groove section structure arrangement it is more compact, the peace of Battery case entirety can be saved as a result, Space is filled, space utilization rate is improved, is convenient for integral layout.

In some embodiments, seal groove 103 has arc-shaped cross-section, as shown in figure, figure and figure, the cross of seal groove 103 Section be it is arc-shaped, i.e., seal groove 103 have smooth inner wall, in this way, sealing strip 101 foam during, foaming material Material can be fully bonded with the inner wall of seal groove 103, guaranteed to effectively seal against between sealing strip 101 and cover board, be kept away Exempt from seal groove 103 inner wall have pit or dead angle, prevent occurring gap between sealing strip 101 and cover board, improve cover board with Leakproofness between side frame 1.

As shown in figure 23, the edge of upper cover plate 10 is equipped with flange 104, and flange 104 is turned over downwards, upper cover plate 10 and side frame 1 roof fitting, and flange 104 stretches out in the outside of side frame 1, as shown, flange 104 surpasses away from the side of sealing strip 101 To extension, and towards close to side frame 1 side turn down, and as shown, flange 104 from up to down by side frame 1 and cover board Junction blocked, flange 104 can play a protective role to connection structure 102, so that the connection knot of cover board and side frame 1 Structure 102 is more stable, and external sundries, equipment is avoided to damage connection structure 102, improves the stability and peace of Battery case Quan Xing.

The thickness of the outer end of the roof of side frame 1 gradually thickens from outside to inside, and the company between upper cover plate 10 and side frame 1 Binding structure 102 is through the outer end of the roof of side frame 1, as shown, the part of the separate sealing strip 101 of the roof of side frame 1 Thickness be greater than close to the part of sealing strip 101, the outer end of upper cover plate 10 has the via hole of perforation, and the outer end of side frame 1 has Threaded hole, connection structure 102 is threadedly coupled through via hole with threaded hole, by the outer end of the outer end of upper cover plate 10 and side frame 1 Be connected, and then upper cover plate 10 and side frame 1 be connected as an entirety, and as shown, the screw thread travel of threaded hole from extroversion Interior progressively longer, i.e. the inside of threaded hole and the length of fit of connection structure 102 is larger, improves the connection of cover board and side frame 1 Stability.

As shown in Figure 26 and Figure 27, the lower surface of side frame 1 is equipped with protection boss 105212, and protection boss 105212 is downward Protrusion, protection boss 105212 is located at the outside of bottom backplate 301, and as shown in figure and figure, protection boss 105212 is located at connection knot Structure 102 deviates from the side of sealing strip 101, protection boss 105212 and connection structure 102 along inward-outward direction face, in this way, protection Boss 105212 can block connection structure 102, and then the equipment for avoiding outside damages connection structure 102, mentions The safety of high connection structure 102 promotes the reasonability and safety of the design of 1 structure of side frame.

As shown in figure 27, Battery case further include: bottom deck assembly 2.

Bottom deck assembly 2 is for reducing the shock from Battery case bottom, to carry out to the intracorporal battery modules of battery case 9 Protection, bottom deck assembly 2 are connected with side frame 1, and bottom backplate 301 is located at the lower section of bottom deck assembly 2, and bottom backplate 301 and bottom plate group Part 2 is spaced apart, and buffer fillings object 106 is folded between bottom backplate 301 and bottom deck assembly 2, and buffer fillings object 106 comes for absorbing From the impact force and vibrational energy of bottom backplate 301.

Bottom backplate 301, buffer fillings object 106 and bottom deck assembly 2 are sequentially arranged in the bottom of Battery case from the bottom up as a result, Portion, and buffer fillings object 106 can occur reasonably to deform after by excessive pressure.In this way, buffer fillings object 106 can lead to The Impact energy that deformation absorbs Battery case bottom is crossed, base pressure is alleviated, achievees the purpose that protect battery, improves Battery case Internal environment stability and safety.

As shown in figure 27, buffer fillings object 106 includes: absorbing energy layer 1061 and foamed cotton layer 1062.

Absorbing energy layer 1061 is adhered to the upper surface of bottom backplate 301 by viscose glue, and absorbing energy layer 1061 is made of foamed aluminium material, Foamed cotton layer 1062 is located at the upper surface of absorbing energy layer 1061, and foamed cotton layer 1062 compresses the lower surface of bottom deck assembly 2, and as shown, It is additionally provided with foamed board 1063 between absorbing energy layer 1061 and foamed cotton layer 1062, forms foaming between foamed board 1063 and bottom deck assembly 2 Chamber, to be used for 1062 foaming of foamed cotton layer, foamed board 1063 is aluminium sheet.

In this way, foamed cotton layer 1062 is compressed when connection structure 102 is by bottom backplate 301 and fixed side frame 1, formed effective Waterproof and dustproof structure, protection battery bottom cleaning, security appliance.Absorbing energy layer 1061 is inhaled when battery bottom is hit Can, foamed cotton layer 1062 can eliminate global tolerance and play the first buffer function when hitting, and slow down impact force, then squeeze Die mould material starts to act on deformation energy-absorbing, slows down the pressure from bottom, is finally reached the purpose of protection battery.

Wherein, bottom backplate 301 uses aluminium sheet punching press, light-weight, while playing energy-absorbing function, 106 energy-absorbing of buffer fillings object It is that unified profile can be according to location arrangements, standardization level is high in cabinet weak link.It 301 periphery of bottom backplate can be with electricity Pond cabinet forms sealing, guarantees cabinet sealed bottom performance, guarantees the safety of the bottom of box.Bottom backplate 301 can be dismantled, Dismounting and change can be carried out after damage, overall cost is lower.Foamed cotton layer 1062 can not only eliminate integral installation tolerance, but also can be right Battery forms Auxiliary support, and a part of ball can be absorbed again when ball is hit and hit energy.The foaming of this periphery is sealed into live hair in time Bubble controls precision using robotic arm, so that production efficiency is higher.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can say this Different embodiments or examples described in bright book are engaged and are combined.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (19)

1. a kind of battery pack (100) characterized by comprising

Bottom deck assembly (2), the bottom deck assembly (2) include the heat exchanger plates (21) being arranged alternately and support plate (22), the heat exchange Plate (21) has longitudinally through heat exchanging chamber (211)；

Afflux pipeline (3), the afflux pipeline (3) setting the heat exchanger plates (21) both ends and with the heat exchanging chamber (211) Connection；

Battery modules (9) are connect between the battery modules (9) and the heat exchanger plates (21) by heat-conducting medium.

2. battery pack (100) according to claim 1, which is characterized in that the afflux pipeline (3) includes header (31) With pipe fitting (32), the header (31) is arranged the end in the heat exchanger plates (21) and is connected to the heat exchanging chamber (211).

3. battery pack (100) according to claim 2, which is characterized in that the heat exchange of multiple heat exchanger plates (21) Chamber (211) is in parallel by the pipe fitting (32) of header (31) and the two neighboring header (31) of connection, and heat transferring medium is more The internal multiple heat exchanging chambers (211) of a heat exchanger plates (21) are in the same direction from one end of multiple heat exchanger plates (21) Flow to the other end.

4. the heat management system of battery pack (100) according to claim 2, which is characterized in that the afflux pipeline (3) is also Include:

Assignment of traffic component (4), the assignment of traffic component (4) be folded in the heat exchanger plates (21) and the header (31) it Between, the assignment of traffic component (4) has multiple groups throttle orifice (41), and the header (31) passes through the throttle orifice (41) and institute State heat exchanging chamber (211) connection.

5. the heat management system of battery pack (100) according to claim 4, which is characterized in that header (31) tool The multiple branched holes (312) for having mainstream cavity (311) and being connected to the mainstream cavity (311), the branched hole (312) and institute It states throttle orifice (41) to be correspondingly arranged, multiple heat exchanging chambers (211) of the heat exchanger plates (21) pass through the header (31) simultaneously Connection connection.

6. the heat management system of battery pack (100) according to claim 4, which is characterized in that the assignment of traffic component (4) flow is adjusted by the quantity of the adjusting throttle orifice (41) and/or position and/or aperture.

7. the heat management system of battery pack (100) according to claim 4, which is characterized in that the throttle orifice (41) Circulation area is less than the circulation area of the heat exchanging chamber (211) open end, and the institute at both ends is located in the assignment of traffic component (4) The circulation area for stating throttle orifice (41) is greater than the circulation area for being located in the middle the throttle orifice (41).

8. the heat management system of battery pack (100) according to claim 4, which is characterized in that multiple headers At least one of (31) there is the connectivity port (313) for be connected to external water route, in the assignment of traffic component (4) entirely Total circulation area of portion's throttle orifice (41) increases with the distance of the assignment of traffic component (4) to the connectivity port (313) And increase.

9. battery pack (100) according to claim 1, which is characterized in that further include: side frame (1), the side frame It (1) include that the first end arms (12), the second end arms (13) and distance piece (14), the distance piece (14) are connected to the first end Between arm (12) and second end wall, and first end arms (12), the second end arms (13) and the distance piece (14) limit It makes with open cavity (11), the opening of bottom deck assembly (2) closing cavity (11), the afflux pipeline (3) It is located in the cavity (11).

10. battery pack (100) according to claim 9, which is characterized in that the bottom deck assembly (2) includes staggered Heat exchanger plates (21) and support plate (22), the first end arms (12) of the side frame (1) and the heat exchanger plates (21) and support plate (22) upper surface is connected.

11. battery pack (100) according to claim 10, which is characterized in that the end of the support plate (22) with it is described The second end arms (13) of side frame (1) is connected, to close the opening of the cavity (11) in corresponding position.

12. battery pack (100) according to claim 10, which is characterized in that the bottom deck assembly (2) further includes patch plate (23), the patch plate (23) connects the second end arms (13) of the side frame (1) and the end of the heat exchanger plates (21), with The opening of the cavity (11) is closed in corresponding position.

13. battery pack (100) according to claim 12, which is characterized in that the patch plate (23), which has, to be oppositely arranged First end, second end, and the third end and the 4th end that are oppositely arranged；The first end of the patch plate (23) and the side The second end arms (13) of frame (1) is connected, and the second end of the patch plate (23) is connected with the end of the heat exchanger plates (21)；It is described At least one end in the third end and the 4th end of patch plate (23) is connected with the adjacent support plate (22).

14. -13 any battery pack (100) according to claim 1, which is characterized in that the heat exchanger plates (21) with it is described It is connected between support plate (22) by connected structure grafting.

15. -13 any battery pack (100) according to claim 1, which is characterized in that the battery modules (9) are located at institute It states above heat exchanger plates (21) and across between two adjacent support plates (22), the both ends of the battery modules (9) are divided It is not installed with the support plate (22)；A plurality of interval is folded between the battery modules (9) and the heat exchanger plates (21) to open up The heat conductive silica gel set.

16. the battery pack (100) according to any one of claim 9-13, which is characterized in that further include: cover board, it is described Cover board is connected to the end of the side frame (1), and sealing strip (101), institute are folded between the cover board and the side frame (1) Sealing strip (101) are stated with aduncate evacuation section (1011), pass through connection knot between the cover board and the side frame (1) Structure (102) is connected, and the connection structure (102) is located at the outside of evacuation section (1011) and between the sealing strip (101) It separates.

17. battery pack (100) according to claim 16, which is characterized in that the cover board is equipped with recessed away from side frame (1) Sunken seal groove (103), in the seal groove (103), the seal groove (103) includes more for sealing strip (101) setting A straight-line groove section (1031) and escape groove section (1032) for being staggered and being sequentially connected, the connection structure (102) are connected to The outside of the escape groove section (1032), the prolonging at least partially along straight-line groove section (1031) of the connection structure (102) It stretches direction and straight-line groove section (1031) face is arranged.

18. battery pack (100) according to claim 17, which is characterized in that the cover board includes:

Upper cover, the upper cover are connected with the upper surface of the side frame (1), and the battery modules (9) are installed on the upper cover, institute State side frame (1), in the accommodation space that the bottom deck assembly (2) limits；

Bottom backplate (301), the bottom backplate (301) are connected with the lower surface of the side frame (1) and are located at the bottom deck assembly (2) lower section.

19. battery pack (100) according to claim 18, which is characterized in that the bottom backplate (301) and the bottom plate group Part (2) is spaced apart to limit protection chamber (302), and is filled with buffer fillings object (106) in the protection chamber (302).