CN111987248A

CN111987248A - Power battery package and vehicle

Info

Publication number: CN111987248A
Application number: CN201910425137.4A
Authority: CN
Inventors: 周燕飞; 张中林; 宋如
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-11-24
Anticipated expiration: 2039-05-21
Also published as: CN111987248B

Abstract

The utility model relates to a power battery package and vehicle, this power battery package include battery tray and battery module (2), the battery tray includes tray body (1), tray body (1) includes bottom plate (11) and forms spacing frame (12) on bottom plate (11), spacing frame (12) with bottom plate (11) are injectd all around jointly and are confined and at least one end is open hold chamber (13), battery module (2) hold in holding chamber (13). Through above-mentioned technical scheme, because hold the chamber seal all around, can be spacing by spacing frame around the battery module, consequently the battery cell in the battery module need not to fix through the module structure among the prior art to make the structure of battery module obtain simplifying, the overall structure of battery tray is convenient for more the assembly of battery module.

Description

Power battery package and vehicle

Technical Field

The present disclosure relates to the field of power battery technology, and in particular, to a power battery pack and a vehicle using the same.

Background

In the prior art, a battery module is generally assembled by a plurality of single batteries, and side plates and end plates for fixing the plurality of single batteries are disposed on the outer sides of the plurality of single batteries. The power battery pack generally comprises a battery tray and a battery module, the battery tray comprises a bottom plate and side plates arranged on the periphery of the bottom plate, the bottom plate and the side plates jointly enclose a containing space used for containing the battery module, and the battery module is installed in the containing space and fixed with a module installation beam in the battery tray.

That is to say, battery cell need earlier constitute the battery module through module structure spare (curb plate, end plate) among the prior art, then fix in the battery tray to, because the battery tray forms through bottom plate and curb plate welding, still need weld the module installation roof beam isotructure that is used for installing the battery module in the battery tray, lead to the overall structure of battery tray and power battery package all comparatively complicated, the integrated level is not high.

Disclosure of Invention

The purpose of the present disclosure is to provide a power battery pack and a vehicle using the same, wherein the power battery pack has a simple structure and high integration level, and can facilitate the installation of a battery module and simplify the structure of the battery module.

In order to achieve the purpose, the present disclosure provides a power battery pack, including battery tray and battery module, the battery tray includes the tray body, and this tray body includes the bottom plate and forms spacing frame on the bottom plate, spacing frame with the bottom plate is injectd all around and is limited to the cavity that holds that seals and at least one end is open jointly, the battery module holds hold the intracavity.

Optionally, the power battery pack further comprises a cover plate, and the cover plate is connected with the bottom plate and jointly forms an accommodating space for accommodating the limiting frame.

Optionally, the cover plate comprises a top cover, surrounding plates and a heat insulation plate, the surrounding plates are formed around the top cover, the surrounding plates are connected with the bottom plate, an opening used for exposing the limiting frame is formed in the top cover, and the heat insulation plate is arranged in the opening.

Optionally, the battery tray includes the baffle, it is the open cavity structure in both ends to hold the chamber, the baffle is installed hold the intracavity, in order with it separates into one end open and other end confined first hold chamber and second and hold the chamber to hold the chamber.

Optionally, a guide sliding groove is formed in the limiting frame, the partition board is provided with a guide sliding block corresponding to the guide sliding groove, and the guide sliding block is slidably connected to the guide sliding groove.

Optionally, the limiting frame comprises a top plate and a plurality of oppositely arranged side plates, the top plate is arranged opposite to the bottom plate, the plurality of oppositely arranged side plates are formed between the top plate and the bottom plate, and the plurality of side plates, the top plate and the bottom plate define a plurality of accommodating cavities together.

Optionally, the power battery pack further comprises a cover plate, the cover plate comprises a top cover, surrounding plates and a heat insulation plate, the surrounding plates are formed on the periphery of the top cover, the surrounding plates are connected with the bottom plate, the top cover corresponds to the position of the limiting frame, an opening is formed in the position of the limiting frame, the top cover is attached to the top plate, and the heat insulation plate is arranged in the opening and attached to the top plate.

Optionally, the side plates include a first side plate and a second side plate, the first side plate is arranged along the length direction of the top plate at intervals, the second side plate is arranged between two adjacent first side plates, an elastic clamping block is arranged on the partition plate, a clamping groove is formed in each first side plate, and the elastic clamping block is clamped with the clamping groove.

Optionally, the first side plate is a hollow structure, a reinforcing rib is formed in the hollow structure, the hollow structure is divided into a plurality of cavities by the reinforcing rib, a clamping hole for the elastic clamping block to pass through is formed in the first side plate, and the clamping hole is communicated with one of the cavities to form the clamping groove.

Optionally, the power battery pack further comprises a bus bar and a mounting bracket for mounting the bus bar, the mounting bracket is clamped in one of the cavities, and the bus bar is mounted on the mounting bracket.

Optionally, the battery module includes a plurality of battery cells, a plurality of battery cells are installed hold the intracavity, and every battery cell's utmost point post is located hold the open end in chamber.

Optionally, the power battery package still includes the sampling board and fixes a plurality of connection pieces on the sampling board, the sampling board is installed on the battery module, the one end of every connection piece pass through the nickel piece with the grafting piece of sampling board is connected, and the other end is connected between two adjacent battery cell's anodal utmost point post and negative pole utmost point post with the electricity.

Optionally, a protection pad is arranged between the single battery and the bottom plate and between the single battery and the limiting frame, one side of the protection pad is fixed to the single battery through heat conduction structure glue, and the other side of the protection pad is fixed to the bottom plate and the limiting frame through the heat conduction structure glue.

Optionally, be formed with inlet channel, liquid outlet channel and many coolant liquid passageways in the bottom plate, many coolant liquid passageways are followed the width direction of bottom plate extends, and follows the length direction interval of bottom plate sets up, inlet channel and liquid outlet channel follow the length direction of bottom plate extends, and follows the width direction interval of bottom plate sets up, coolant liquid passageway is located between inlet channel and the liquid outlet channel, the both ends of every coolant liquid passageway respectively with inlet channel and liquid outlet channel intercommunication.

Optionally, the power battery comprises a high-voltage distribution box, the base plate comprises a first portion for supporting the battery module and a second portion for supporting the high-voltage distribution box, and the limiting frame is formed on the first portion.

Optionally, the tray body is integrally formed by an extrusion molding process.

According to still another aspect of the present disclosure, a vehicle is provided, which includes the power battery pack described above.

Through the technical scheme, because the chamber is held and is sealed all around, can be spacing by spacing frame around the battery module, consequently, the battery cell in the battery module need not to fix through prior art's module structure, in other words, battery cell can directly pack into and hold in the chamber, battery cell's bottom can be supported by the bottom plate and spacing, battery cell's top and lateral part can be spacing by spacing frame, thereby make the battery module need not to set up the module structure again, the structure of battery module is simplified, the overall structure of battery tray is convenient for the assembly of battery module more, thereby simplify the structure of power battery package, the assembly of the power battery package of being convenient for. Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a power battery pack according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a power battery pack provided in accordance with an embodiment of the present disclosure;

Fig. 3 is a schematic perspective view of a power battery pack provided in an embodiment of the present disclosure, wherein a cover plate is not shown;

fig. 4 is a top view of a battery tray provided by an embodiment of the present disclosure, wherein a high voltage distribution box is also shown;

3 FIG. 3 5 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 A 3- 3 A 3 in 3 FIG. 3 4 3; 3

FIG. 6 is an enlarged view of portion A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4;

fig. 8 is an enlarged view of portion B of fig. 7;

FIG. 9 is a front view of a separator plate provided in accordance with an embodiment of the present disclosure;

FIG. 10 is a front view of a sampling plate provided by one embodiment of the present disclosure;

FIG. 11 is a rear view of a sampling plate provided by one embodiment of the present disclosure;

fig. 12 is a schematic diagram of a cooling liquid channel, a liquid inlet channel and a liquid outlet channel provided by an embodiment of the disclosure.

Description of the reference numerals

1 tray body 11 bottom plate

111 liquid inlet channel 112 liquid outlet channel

113 a first part of a cooling liquid channel 114

115 second part 12 limiting frame

121 top plate 122 first side plate

1221 groove 1222 reinforcing bar

1223 Cavity 123 second side plate

124 guide chute 13 accommodating cavity

14 partition 141 elastic fixture block

142 direction slider 2 battery module

21 single battery 3 high-voltage distribution box

4 cover plate 41 Top cover

42 shroud 43 opening

5 heat insulation board 6 sampling board

61 plug block 7 connecting sheet

8 nickel sheet 91 bus bar

92 mounting bracket

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise stated, terms of orientation such as "top and bottom" are used with respect to a normal running state of the vehicle, and specifically, a direction toward a ceiling of the vehicle is "top" and a direction toward a chassis of the vehicle is "bottom" when the vehicle is running normally. Further, "inner and outer" refer to the inner and outer of the corresponding component or structure profile.

As shown in fig. 1 to 12, the present disclosure provides a power battery pack, which includes a battery tray and a battery module 2, wherein the battery tray includes a tray body 1, the tray body 1 includes a bottom plate 11 and a limiting frame 12 formed on the bottom plate 11, the limiting frame 12 and the bottom plate 11 jointly define a containing cavity 13 with a closed periphery and an open at least one end, and the battery module 2 is contained in the containing cavity 13.

Through the technical scheme, because hold chamber 13 seal all around, battery module 2 can be spacing by spacing frame 12 all around, consequently, battery cell 21 in the battery module 2 need not to fix through prior art's module structure (curb plate, end plate etc.), in other words, battery cell 21 can directly pack into and hold chamber 13, battery cell 21's bottom can be supported and spacing by bottom plate 11, battery cell 21's top and lateral part can be spacing by spacing frame 12, thereby make battery module 2 need not to set up the module structure again, battery module 2's structure is simplified, battery tray's overall structure is convenient for battery module 2's assembly more, thereby simplify the structure of power battery package, the assembly of the power battery package of being convenient for.

As an embodiment, the tray body 1 can be integrated into one piece, that is to say, can constitute and hold chamber 13 after bottom plate 11 and spacing frame 12 integrated into one piece, compare with the technical scheme that needs to weld bottom plate and curb plate in order to form the battery tray among the prior art, the production manufacturing process of the battery tray that this disclosure provided is simple, the integrated level is high, more does benefit to the structure of simplifying power battery package, improves the holistic integrated level of power battery package.

Further, the tray body 1 may be integrally formed through various embodiments, for example, in one embodiment provided by the present disclosure, the tray body 1 may be integrally formed through an extrusion molding process. Because the tray body 1 is usually made of aluminum, for the aluminum tray body 1, the bottom plate 11 and the limiting frame 12 can be directly formed through an extrusion forming process, namely, the containing cavity 13 with the periphery closed is formed, so that the limiting of the limiting frame 12 on the single battery 21 is realized, and the installation space of the battery module 2 is provided. In another embodiment, the tray body 1 may be integrally formed by a press forming process, a cast forming process, or the like.

In one embodiment provided by the present disclosure, as shown in fig. 2 and 5, the battery tray may further include a partition plate 14, the accommodating cavity 13 is a cavity structure with two open ends, and the partition plate 14 is installed in the accommodating cavity 13 to divide the accommodating cavity 13 into a first accommodating cavity and a second accommodating cavity with one open end and the other closed end. Like this, on the one hand can make first chamber and the second of holding can arrange a plurality of battery cells 21 respectively in holding the chamber, improve battery tray in battery cell 21's quantity, and then improve the duration of power battery package, on the other hand when fixed battery cell 21, need incline battery tray, and to first holding the chamber and pouring into heat conduction structure and glue, with the fixed battery cell 21 that is located first intracavity that holds, treat that first heat conduction structure who holds the intracavity glues after solidifying, can overturn battery tray, and to the second hold the chamber and pour into heat conduction structure and glue, with the fixed battery cell 21 that is located the second and holds the intracavity, when pouring into the structure and glue, baffle 14 can play the supporting role to battery cell 21, so that battery cell 21's is fixed. In other embodiments, the partition plate may be integrally formed or fixed at one end of the limiting frame, so that the accommodating cavity has a cavity structure with one open end, as long as the accommodating cavity 13 capable of accommodating the battery module 2 is formed, and the battery tray can be erected on the side to be filled with the heat conducting structural adhesive.

Further, as shown in fig. 7, in order to form the accommodating cavity 13 into a cavity structure with a closed periphery, the position limiting frame 12 may include a top plate 121 disposed opposite to the bottom plate 11, and a plurality of side plates disposed opposite to each other and formed between the top plate 121 and the bottom plate 11. In one embodiment, the number of side plates may be two, such that the two side plates, together with the bottom plate 11 and the top plate 121, define one receiving cavity 13. In another embodiment, the number of the side plates may be two or more, so that the plurality of side plates, together with the top plate 121 and the bottom plate 11, may define the plurality of receiving cavities 13 to receive the plurality of battery modules 2, and the plurality of side plates may also provide a good restriction to the expansion of the battery modules 2. Wherein, in order to further improve the quantity that holds of battery module 2, all can install baffle 14 in every holds chamber 13 to make every hold chamber 13 can both be divided into first holding chamber and second holding chamber by baffle 14, in order to improve the quantity of battery cell 21.

In one embodiment provided by the present disclosure, the battery cell 21 may be a square battery, and in order to match the structure and shape of the receiving cavity 13 with the structure and shape of the battery cell 21, the top plate 121 and the bottom plate 11 may be parallel to each other, and the side plates may be perpendicular to the top plate 121 and the bottom plate 11, so that the cross section of the receiving cavity 13 is formed in a square shape (rectangle or square). In other embodiments, the cross section of the accommodating cavity may also be a trapezoid, a parallelogram, or the like, and the specific shape of the accommodating cavity is not limited in the present disclosure, as long as the accommodating cavity is formed as a cavity structure with a closed periphery and an open at least one end, all of which belong to the protection scope of the present disclosure.

In addition, the partition 14 may be installed in the accommodating cavity 13 through various embodiments, for example, as shown in fig. 5, 6 and 9, in an exemplary embodiment provided by the present disclosure, the side plates may include a first side plate 122 and a second side plate 123, the first side plate 122 is disposed at an interval along the length direction of the top plate 121, the second side plate 123 is disposed between two adjacent first side plates 122, that is, the first side plate 122 and the second side plate 123 are staggered along the length direction of the top plate 121, and each accommodating cavity 13 is formed by the first side plate 122, the second side plate 123, the top plate 121 and the bottom plate 11. The partition 14 is provided with an elastic clamping block 141, the first side plate 122 is provided with a clamping groove 1221, when the partition 14 is installed, the elastic clamping block 141 is firstly contacted with the first side plate 122 and elastically deformed, and when the elastic clamping block 141 moves to the clamping groove 1221, the elastic clamping block 141 is opened and recovers to the initial state to be clamped with the clamping groove 1221, so that the partition 14 is clamped in the accommodating cavity 13. In other embodiments, the partition 14 may also be directly welded to the first side plate 122, the second side plate 123, the top plate 121, and the bottom plate 11, or fixed in the accommodating cavity 13 by means of glue dispensing.

Further, as shown in fig. 6, the first side plate 122 is a hollow structure, a reinforcing rib 1222 is formed in the hollow structure, the hollow structure is divided into a plurality of cavities 1223 by the reinforcing rib 1222, a fastening hole for the elastic fastening block 141 to pass through is formed in the first side plate 122, and the fastening hole is communicated with one of the cavities 1223 to form the fastening groove 1221. Set up first curb plate 122 into hollow structure to set up strengthening rib 1222 in hollow structure, can improve the structural strength of first curb plate 122 on the one hand, make every hold chamber 13 all have the first curb plate 122 that can restrict cell 21 deformation effectively, on the other hand is because strengthening rib 1222 is inside to be cut apart into a plurality of cavitys 1223 with first curb plate 122, thereby can provide the accommodation space of elasticity fixture block 141, realizes the joint of first curb plate 122 and baffle 14. In addition, the cavity 1223 can also play a role in reducing the weight of the first side plate 122, so that the power battery pack is light in weight.

Further, in order to conveniently place the partition board 14 into the accommodating space, a guide sliding groove 124 may be formed in the limiting frame 12, a guide sliding block 142 is formed on the partition board 14 corresponding to the guide sliding groove 124, and the guide sliding block 142 is slidably connected to the guide sliding groove 124. Specifically, as shown in fig. 6, 8 and 9, the guide sliding groove 124 is formed on the second side plate 123 and/or the top plate 121, the guide sliding block 142 is formed on the partition plate 14, and the guide sliding block 142 is slidably connected to the guide sliding groove 124. Like this, when installation baffle 14, direction spout 124 can play the guide effect to the removal of baffle 14, and supplementary baffle 14 slides and gets into and hold chamber 13 in, at the slip in-process of baffle 14, elasticity fixture block 141 and first curb plate 122 contact and take place elastic deformation, and when elasticity fixture block 141 moved draw-in groove 1221 department, elasticity fixture block 141 opened and with draw-in groove 1221 joint to make baffle 14 joint hold in the chamber 13.

In addition, as mentioned above, when the single battery 21 is fixed in the accommodating cavity 13, the battery tray needs to be erected laterally to facilitate pouring the structural adhesive, when the structural adhesive is poured, since the battery tray is placed laterally, the partition 14 supports the single battery 21, for the embodiment that the top plate is formed with the guide sliding groove 124 and the top of the partition 14 is formed with the guide sliding block 142 corresponding to the guide sliding groove 124, when the partition 14 supports the single battery 21, the partition 14 may rotate around the elastic block 141 under the gravity of the single battery 21 and bend, and since the guide sliding groove 124 extends along the width direction of the position limiting frame 12, when the partition 14 rotates around the elastic block 141 and bends, the guide sliding block 142 at the top of the partition 14 is limited by the guide sliding groove 124, thereby preventing the partition 14 from rotating around the elastic block 141 under the gravity of the single battery 21, thereby improving the reliability of the separator 14.

Further, since two adjacent accommodating cavities 13 may share one second side plate 123, two sides of the second side plate 123 may be respectively formed with the guide chutes 124, so that the opening 43 of one guide chute 124 faces one accommodating cavity 13, the opening 43 of the other guide chute 124 faces the other accommodating cavity 13, the two guide chutes 124 are staggered in the height direction of the second side plate 123, that is, the two guide chutes 124 are not in the same horizontal plane, and the heights of the two guide chutes 124 from the bottom plate 11 are different (as shown in fig. 8), so that the two guide chutes 124 may be arranged within the limited thickness of the second side plate 123, thereby avoiding the space of the accommodating cavity 13 becoming smaller due to the increase of the thickness of the second side plate 123, and reducing the number of the unit batteries 21.

In addition, as shown in fig. 12, in order to further improve the integration of the battery tray, in an embodiment provided by the present disclosure, a liquid inlet channel 111, a liquid outlet channel 112, and a plurality of cooling liquid channels 113 are formed in the bottom plate 11, the plurality of cooling liquid channels 113 extend along the width direction of the bottom plate 11 and are spaced apart from each other along the length direction of the bottom plate 11, the liquid inlet channel 111 and the liquid outlet channel 112 extend along the length direction of the bottom plate 11 and are spaced apart from each other along the width direction of the bottom plate 11, the cooling liquid channels 113 are located between the liquid inlet channel 111 and the liquid outlet channel 112, and two ends of each cooling liquid channel 113 are respectively communicated with the liquid inlet channel 111 and the liquid outlet channel 112, so that the cooling liquid can enter the cooling liquid channels 113 through the liquid inlet channel 111 to cool the single batteries 21 in the battery tray. Specifically, the cooling liquid channel 113 may be formed on the bottom plate 11 by an extrusion molding process, after the cooling liquid channel 113 is formed on the bottom plate 11, the liquid inlet channel 111 and the liquid outlet channel 112 extending along the length direction may be machined on the bottom plate 11 by a machining method, so that the cooling liquid channel 113 is communicated with the liquid inlet channel 111 and the liquid outlet channel 112, and the two ends of the bottom plate 11 along the width direction may be welded with baffles, so that the liquid inlet channel 111 and the liquid outlet channel 112 form a cavity with a closed periphery.

Compared with the technical scheme that a liquid cooling plate is arranged on the bottom plate of the battery tray in the prior art, in the battery tray provided by the application, the cooling liquid channel 113 is directly and integrally formed on the bottom plate 11, so that the structure of the battery tray is further simplified, the integration level of a power battery pack is improved, the overall height of the power battery pack is reduced, and the power battery pack is more conveniently arranged on a vehicle chassis.

In addition, as shown in fig. 2 and 5, the power battery pack may further include a high voltage distribution box, and the high voltage distribution box may implement functions of monitoring, protecting, switching on and off, power distribution and the like on the single battery 21. The base plate 11 may include a first portion 114 for supporting the battery module 2 and a second portion 115 for supporting the hv power distribution box 3, the position-limiting frame 12 is formed on the first portion 114, and the hv power distribution box 3 may be mounted on the second portion 115, thereby facilitating the connection of the hv power distribution box 3 with the unit batteries 21.

As shown in fig. 2, the battery module 2 includes a plurality of single batteries 21, the plurality of single batteries 21 are installed in the accommodating cavity 13 of the battery tray, and the pole of each single battery 21 is located at the open end of the accommodating cavity 13, so as to facilitate the electrical connection between the single batteries 21 through the connecting sheet 7, i.e., the series connection or the parallel connection between the single batteries 21.

Further, as shown in fig. 1 and 2, the power battery pack further includes a cover plate 4, the cover plate 4 is connected to the bottom plate 11 of the battery tray and together forms an accommodating space for accommodating the limiting frame 12, that is, the cover plate 4 covers the bottom plate 11, and the limiting frame 12 is located between the cover plate 4 and the bottom plate 11 to seal and protect the single battery 21.

The invention comprises a heat insulation plate 5, as shown in fig. 1, the position of the heat insulation plate 5 corresponding to the limiting frame 12 is attached to the upper surface of the cover plate 4 to prevent the heat of the battery module 2 from being transferred upwards, and preferably, a heat insulation structure is also arranged on the bottom plate 11 of the battery tray, thereby effectively preventing the heat diffusion of the battery module 2 and the influence of the external temperature on the temperature of the battery module 21.

Further, in an embodiment provided by the present disclosure, the cover plate 4 includes a top cover 41, a surrounding plate 42 and a heat insulation plate 5, the surrounding plate 42 is formed around the top cover 41, the surrounding plate 42 is connected with the bottom plate 11, so that the surrounding plate 42, the top cover 41 and the bottom plate 11 jointly form an accommodating space for accommodating the limiting frame 12, an opening 43 for exposing the limiting frame 12 is formed on the top cover 41, and the heat insulation plate 5 is disposed in the opening 43 to prevent heat diffusion of the single battery 21, so that the weight of the whole power battery pack can be reduced, and the height of the whole power battery pack can be reduced. That is, the position of the opening 43 corresponds to the position of the battery module 2 so that the heat-insulating plate 5 can correspondingly prevent the loss of heat of the battery module 2.

In one embodiment provided by the present disclosure, the size of the heat insulation board 5 may be adapted to the size of the opening 43, so that the heat insulation board 5 may be embedded in the opening 43, and preferably, the heat insulation board 5 is hermetically connected (seamlessly connected) with the opening 43, for example, the heat insulation board 5 may be connected with the opening 43 by gluing or welding. The cover plate 4 and the heat insulation plate 5 are integrated together, so that the weight of the whole power battery pack can be reduced, the height of the whole power battery pack is reduced, and the power battery pack can be more conveniently installed on a vehicle chassis. The heat insulation board 5 may be attached to or spaced from the top board 121 of the position limiting frame 12, which is not limited in this disclosure.

In another embodiment provided by the present disclosure, the top cover 41 is formed with an opening 43 at a position corresponding to the position of the position-limiting frame 12, and the size of the opening 43 may be equal to the size of the top plate 121 of the position-limiting frame 12, or may be smaller than the size of the top plate 121, as long as the opening 43 corresponds to the position-limiting frame 12. After the cover plate 4 is coupled to the bottom plate 11 of the battery tray, the top cover 41 may be attached to the top plate 121 such that the top plate 121 closes one side of the opening 43, and the cross-section of the opening 43 is formed in a U-shaped configuration, so that the heat insulation plate 5 is disposed in the opening 43 and attached to the top plate 121. Here, the heat insulation plate 5 may be connected to the opening 43, or may be fixed to the top plate 121, but the present disclosure is not limited thereto.

In addition, in an embodiment that this disclosure provided, as shown in fig. 2, fig. 10, fig. 11, the power battery package can also include sampling plate 6 and fix a plurality of connection pieces 7 on sampling plate 6, and sampling plate 6 installs on battery module 2, and the one end of every connection piece 7 is passed through nickel piece 8 and is connected with the plug-in block 61 of sampling plate 6, and another end electrical connection is between the positive utmost point post and the negative utmost point post of two adjacent battery cells. In other words, in the present application, the connecting sheet 7 is directly fixed on the sampling plate 6, and after the sampling plate 6 is mounted on the battery module 2, the position of each connecting sheet 7 corresponds to the position of the corresponding battery cell 21, and the connecting sheet 7 is welded to the post of the battery cell 21, so that the two adjacent battery cells 21 can be electrically connected. In prior art, the sampling board is fixed and is supported by sampling board fixed bolster, and in this application, because connection piece 7 and sampling board 6 are integrated together, and connection piece and cell 21's utmost point post welding, consequently need not to reuse sampling board fixed bolster fixed sampling board 6, sampling board 6 can the snap-on cell 21 to the assembly process of power battery package has been simplified. Here, the attachment sheet 7 and the sampling plate 6 may be wrapped by a PET film to fix the attachment sheet 7 to the sampling plate 6, thereby improving the stability of the attachment between the attachment sheet and the sampling plate 6.

When putting into battery module 2 and holding chamber 13, in order to prevent that battery tray from haring battery cell 21, can be provided with the protection pad (not shown) between battery cell 21 and bottom plate 11 and spacing frame 12, it is fixed with battery cell 21 that heat conduction structure glue is passed through to one side of protection pad, and the opposite side is glued through heat conduction structure and is fixed with bottom plate 11 and spacing frame 12. In other words, the single battery 21 is fixed in the accommodating cavity 13 through the heat conducting structure glue, and the heat conducting structure glue can not only play a role in fixing the single battery 21, but also facilitate the heat conduction of the single battery 21, thereby facilitating the heat dissipation of the single battery 21. Here, the protection pad is a member for protecting and protecting the unit cells 21 when the unit cells 21 are mounted in the position-limiting frame 12, and preventing the unit cells 21 from being scratched and damaged.

As shown in fig. 2, the power battery pack may further include a bus bar 91 and a mounting bracket 92 for mounting the bus bar 91, as described above, the limiting frame 12 may include a top plate 121 disposed opposite to the bottom plate 11, and a plurality of side plates formed between the top plate 121 and the bottom plate 11, the side plates include a first side plate 122 and a second side plate 123, the first side plate 122 is disposed at an interval along a length direction of the top plate 121, the second side plate 123 is disposed between two adjacent first side plates 122, the first side plate 122 is a hollow structure, a reinforcing rib 1222 is formed in the hollow structure, the reinforcing rib 1222 divides the hollow structure into a plurality of cavities 1223, the mounting bracket 92 is clamped in one of the cavities 1223, and the bus bar 91 is mounted on the mounting bracket 92. Here, the mounting bracket 92 mainly utilizes a cavity 1223 formed in the first side plate 122 to realize the clamping with the first side plate 122, in a specific embodiment, the mounting bracket 92 may be formed in a U shape and include a first bracket and a second bracket opposite to each other and a third bracket formed between the first bracket and the second bracket, and when the mounting bracket 92 is clamped, the first bracket of the mounting bracket 92 may be accommodated in the cavity 1223 of the first side plate 122, so that the U-shaped opening 43 of the mounting bracket 92 clamps the wall of the first side plate 122, that is, the wall of the first side plate 122 is clamped between the first bracket and the second bracket of the mounting bracket 92, thereby realizing the clamping of the mounting bracket 92 and the first side plate 122. The bus bar 91 may be snapped onto the mounting bracket 92 or secured to the mounting bracket 92 by fasteners. The bus bar 91 may be made of a conductive metal material, for example, copper, aluminum, or the like.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a power battery package, its characterized in that, includes battery tray and battery module (2), the battery tray includes tray body (1), and this tray body (1) includes bottom plate (11) and forms spacing frame (12) on bottom plate (11), spacing frame (12) with bottom plate (11) are injectd jointly all around and are closed and at least one end is open hold chamber (13), and battery module (2) hold in holding chamber (13).

2. The power battery pack according to claim 1, further comprising a cover plate (4), wherein the cover plate (4) is connected with the bottom plate (11) and jointly forms a containing space for containing the limiting frame (12).

3. The power battery pack according to claim 2, wherein the cover plate (4) comprises a top cover (41), a surrounding plate (42) and a heat insulation plate (5), the surrounding plate (42) is formed around the top cover (41), the surrounding plate (42) is connected with the bottom plate (11), an opening (43) for exposing the limiting frame (12) is formed in the top cover (41), and the heat insulation plate (5) is arranged in the opening (43).

4. The power battery pack according to claim 1, wherein the battery tray comprises a partition plate (14), the accommodating cavity (13) is a cavity structure with two open ends, and the partition plate (14) is installed in the accommodating cavity (13) to divide the accommodating cavity (13) into a first accommodating cavity and a second accommodating cavity with one open end and the other closed end.

5. The power battery pack according to claim 4, wherein a guide sliding groove (124) is formed in the limiting frame (12), a guide sliding block (142) is arranged on the partition plate (14) corresponding to the guide sliding groove (124), and the guide sliding block (142) is slidably connected to the guide sliding groove (124).

6. The power battery pack according to claim 4, wherein the position limiting frame (12) comprises a top plate (121) arranged opposite to the bottom plate (11), and a plurality of oppositely arranged side plates formed between the top plate (121) and the bottom plate (11), and the plurality of side plates and the top plate (121) and the bottom plate (11) jointly define a plurality of accommodating cavities (13).

7. The power battery pack according to claim 6, further comprising a cover plate (4), wherein the cover plate (4) comprises a top cover (41), surrounding plates (42) and a heat insulation plate (5), the surrounding plates (42) are formed around the top cover (41), the surrounding plates (42) are connected with the bottom plate (11), an opening (43) is formed in the position, corresponding to the limiting frame (12), of the top cover (41), the top cover (41) is attached to the top plate (121), and the heat insulation plate (5) is arranged in the opening (43) and attached to the top plate (121).

8. The power battery pack according to claim 6, wherein the side plates comprise a first side plate (122) and a second side plate (123), the first side plate (122) is arranged at intervals along the length direction of the top plate (121), the second side plate (123) is arranged between two adjacent first side plates (122), an elastic clamping block (141) is arranged on the partition plate (14), a clamping groove (1221) is arranged on the first side plate (122), and the elastic clamping block (141) is clamped with the clamping groove (1221).

9. The power battery pack according to claim 8, wherein the first side plate (122) is a hollow structure, a reinforcing rib (1222) is formed in the hollow structure, the reinforcing rib (1222) divides the hollow structure into a plurality of cavities (1223), a clamping hole for the elastic clamping block (141) to pass through is formed in the first side plate (122), and the clamping hole is communicated with one of the cavities (1223) to form the clamping groove (1221).

10. The power battery pack of claim 9, further comprising a bus bar (91) and a mounting bracket (92) for mounting the bus bar (91), wherein the mounting bracket (92) is clamped in one of the cavities (1223), and the bus bar (91) is mounted on the mounting bracket (92).

11. The power battery pack according to claim 1, wherein the battery module (2) comprises a plurality of single batteries (21), the plurality of single batteries (21) are installed in the accommodating cavity (13), and a pole of each single battery (21) is located at an open end of the accommodating cavity (13).

12. The power battery pack as claimed in claim 11, further comprising a sampling plate (6) and a plurality of connecting pieces (7) fixed on the sampling plate (6), wherein the sampling plate (6) is installed on the battery module (2), one end of each connecting piece (7) is connected with the insertion block (61) of the sampling plate (6) through a nickel sheet (8), and the other end of each connecting piece is electrically connected between the positive pole and the negative pole of two adjacent single batteries (21).

13. The power battery pack according to claim 11, wherein a protective pad is arranged between the single battery (21) and the bottom plate (11) and the limiting frame (12), one side of the protective pad is fixed with the single battery (21) through a heat-conducting structural adhesive, and the other side of the protective pad is fixed with the bottom plate (11) and the limiting frame (12) through the heat-conducting structural adhesive.

14. The power battery pack as recited in claim 1, wherein a liquid inlet channel (111), a liquid outlet channel (112) and a plurality of cooling liquid channels (113) are formed in the bottom plate (11), the plurality of cooling liquid channels (113) extend along the width direction of the bottom plate (11) and are arranged at intervals along the length direction of the bottom plate (11), the liquid inlet channel (111) and the liquid outlet channel (112) extend along the length direction of the bottom plate (11) and are arranged at intervals along the width direction of the bottom plate (11), the cooling liquid channel (113) is located between the liquid inlet channel (111) and the liquid outlet channel (112), and two ends of each cooling liquid channel (113) are respectively communicated with the liquid inlet channel (111) and the liquid outlet channel (112).

15. The power battery pack according to claim 1, wherein the power battery includes a high voltage distribution box (3), the base plate (11) includes a first portion (114) for supporting the battery module (2) and a second portion (115) for supporting the high voltage distribution box (3), and the position-limiting frame (12) is formed on the first portion (114).

16. The power battery pack according to any one of claims 1-15, wherein the tray body (1) is integrally formed by an extrusion process.

17. A vehicle comprising a power battery pack according to any one of claims 1 to 16.