CN212392342U

CN212392342U - Battery pack and vehicle with same

Info

Publication number: CN212392342U
Application number: CN202021208545.9U
Authority: CN
Inventors: 廖正远; 曾毅; 郑卫鑫
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-22
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a battery package and vehicle that has it, battery package includes: a first tray; the first battery array is arranged on the first tray and comprises a plurality of single batteries; the second tray is arranged above the first battery array and is fixedly connected with the first tray, and the second tray is provided with a bottom plate; at least one second battery array, second battery array establish on the second tray, and second battery array includes a plurality of battery cells, is equipped with the runner on the bottom plate to the heat transfer of first battery array and second battery array. According to the utility model discloses a battery pack, through establishing first battery array on first tray, the second tray is established in first battery array's top, and second battery array establishes on the second tray, is equipped with the runner on the bottom plate. Therefore, the structure of the battery pack is simple, and the integration level of the battery pack is improved.

Description

Battery pack and vehicle with same

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery package and vehicle that has it is related to.

Background

In the related art, the battery pack includes a housing, an upper battery module, a lower battery module, and a cooling system disposed between the upper battery module and the lower battery module. When the battery module is assembled, a plurality of single batteries are required to be sequentially arranged to form a battery array, end plates and side plates are arranged on the periphery of the battery array, and the end plates and the side plates are fixed through pull rods or other fasteners. The cooling system generally adopts the harmonica pipe to for the ease of installation, usually need fix the harmonica pipe on the fixed plate earlier, then be fixed in the fixed plate between upper module and the lower floor module, cool off upper battery module and lower floor battery module simultaneously. The structure of the existing battery pack is more, so that the structure of the battery pack is more complex, the assembly process is more complicated, and the lightweight design of the battery pack is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a battery pack, such that the structure of the battery pack is simple, and the integration level of the battery pack is improved.

According to the utility model discloses battery package of first aspect embodiment includes: a first tray; at least one first battery array disposed on the first tray, the first battery array including a plurality of battery cells; the second tray is arranged above the first battery array, is fixedly connected with the first tray and is provided with a bottom plate; at least one second battery array, the second battery array is established on the second tray, the second battery array includes a plurality of battery cells, be equipped with the runner on the bottom plate, in order to be right first battery array with the heat transfer of second battery array.

According to the utility model discloses battery package, through establishing first battery array on first tray, the second tray is established in first battery array's top, and second battery array establishes on the second tray, is equipped with the runner on the bottom plate of second tray. Therefore, the structure of the battery pack is simple, and the integration level of the battery pack is improved.

According to some embodiments of the present invention, both ends of the bottom plate of the second tray are respectively provided with a liquid inlet and a liquid outlet, and both the liquid inlet and the liquid outlet are communicated with the flow channel; the battery pack further comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with the liquid inlet of the bottom plate, and the liquid outlet pipe is connected with the liquid outlet of the bottom plate.

According to some embodiments of the invention, the battery pack comprises a plurality of the second trays; the liquid inlet pipe comprises a first main pipe and a plurality of first branch pipes, one end of the first main pipe is connected with the outside, the other end of the first main pipe is connected with the plurality of first branch pipes, the free ends of the plurality of first branch pipes are correspondingly connected with the liquid inlets of the plurality of second trays respectively, and the lengths of the plurality of first branch pipes are equal; the drain pipe includes second house steward and a plurality of second branch pipe, the one end and the external connection of second house steward, the other end and a plurality of second house steward the second branch union coupling, it is a plurality of the free end of second branch pipe respectively with a plurality of the second tray the liquid outlet corresponds continuously, and is a plurality of the length homogeneous phase of second branch pipe equals.

According to the utility model discloses a some embodiments, be equipped with the branch liquid box on the first tray, divide the liquid box to include the fixing base and locate liquid inlet joint on the fixing base connects with going out the liquid and connects, the one end and the liquid inlet joint of first house steward are connected, in order to pass through liquid inlet joint and external connection, the one end of second house steward with go out liquid articulate, in order to pass through go out liquid joint and external connection.

According to some embodiments of the present invention, the bottom plate of the second tray has a plurality of liquid inlets located at the same side in the width direction of the first tray, and a plurality of liquid outlets located at the other side in the width direction of the first tray.

According to some embodiments of the present invention, the first tray comprises a base plate and a boundary beam arranged around the base plate, and the first tray is provided with at least one first mounting portion; the outer peripheral edges of the bottom plates are provided with frames, at least one second installation part is arranged on the frames, and the second installation parts correspond to the first installation parts.

According to some embodiments of the present invention, the first tray is provided with a plurality of the first mounting portions, the plurality of the first mounting portions being distributed on the side beam along a width direction of the first tray; the outer side of the frame is provided with a plurality of second installation parts, and the second installation parts are distributed on the frame along the width direction of the first tray; the first installation part is positioned on the same side of the width direction of the first tray and is connected with the corresponding second installation part.

According to some embodiments of the present invention, the battery pack includes a plurality of the second trays, the plurality of the second trays being spaced apart along a length direction of the first tray; every be equipped with on the second tray the second installation department, be equipped with on the first tray with every the second tray the second installation department is corresponding first installation department.

According to some embodiments of the invention, the first mounting portion is provided with a plurality of first mounting holes, the plurality of first mounting holes being spaced apart from each other along a length direction of the first mounting portion; the second mounting part is provided with a plurality of second mounting holes which are spaced from each other along the length direction of the second mounting part; the plurality of first mounting holes and the plurality of second mounting holes are correspondingly arranged, and each first mounting hole and each second mounting hole are fixedly connected through a fastener.

According to some embodiments of the present invention, the top of the first battery array is fixed to the bottom of the bottom plate by bonding with a heat conducting structure.

According to some embodiments of the invention, the first tray is provided with a plurality of the first battery arrays; the battery pack comprises a plurality of second trays, one second battery array is arranged on each second tray, and the second battery arrays are vertically opposite to the first battery arrays.

According to some embodiments of the present invention, the battery pack further comprises: the block terminal, the block terminal is established on the first tray, the block terminal is located adjacent two between the first battery array, just the block terminal with first battery array with the equal electricity of second battery array is connected.

According to some embodiments of the present invention, the first battery array is fixed to the first tray by bonding, and the second battery array is fixed to the second tray by bonding.

According to the utility model discloses vehicle of second aspect embodiment, include according to the utility model discloses the battery package of above-mentioned first aspect embodiment.

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

Drawings

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

fig. 1 is a schematic diagram of a battery pack according to an embodiment of the present invention;

fig. 2 is another schematic diagram of a battery pack according to an embodiment of the present invention, wherein the first and second battery arrays are not shown;

fig. 3 is a schematic view of a first tray of a battery pack according to an embodiment of the present invention;

fig. 4 is an exploded view of a second tray of a battery pack according to an embodiment of the present invention;

fig. 5 is a schematic view of a bottom plate of a second tray of a battery pack according to an embodiment of the present invention;

fig. 6 is an assembly schematic diagram of a liquid separation box, a liquid inlet pipe and a liquid outlet pipe of a battery pack according to an embodiment of the present invention;

fig. 7 is a schematic view of a liquid inlet tube of a battery pack according to an embodiment of the present invention;

fig. 8 is a schematic view of a liquid separation box of a battery pack according to an embodiment of the present invention.

Reference numerals:

100: a battery pack;

1: a first tray; 11: a first mounting portion; 12: a liquid separation box; 121: a liquid inlet joint; 122: a liquid outlet joint;

123: a fixed seat; 13: a liquid inlet pipe; 131: a first header pipe; 132: a first branch pipe; 14: a liquid outlet pipe;

141: a second manifold; 142: a second branch pipe; 15: a substrate; 16: a boundary beam;

2: a first battery array; 3: a second tray; 31: a base plate; 311: a liquid inlet;

312: a liquid outlet; 313: a flow channel; 32: a second mounting portion; 33: a frame;

4: a second battery array; 5: a distribution box; 6: a first quick connector; 7: and a second quick-connect connector.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A battery pack 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, a battery pack 100 according to an embodiment of the present invention includes a first tray 1, at least one first battery array 2, at least one second tray 3, and at least one second battery array 4.

Specifically, first battery array 2 is established on first tray 1, and first battery array 2 includes a plurality of battery cell, and second tray 3 is established in first battery array 2's top, and second tray 3 and first tray 1 fixed connection, second tray 3 have bottom plate 31, and second battery array 4 is established on second tray 3, and second battery array 4 includes a plurality of battery cell, is equipped with the runner on the bottom plate 31 to the heat transfer of first battery array 2 and second battery array 4.

For example, in the example of fig. 1 to 8, the first battery array 2 is installed in the first tray 1, and the second tray 3 is fixedly connected right above the first battery array 2, so that the installation stability of the second tray 3 is ensured. Second battery array 4 installs on second tray 3, and first battery array 2 and second battery array 4 are located the ascending both sides of bottom plate 31's thickness direction respectively this moment, are equipped with the runner on the bottom plate 31, and the coolant liquid of being convenient for circulates in the runner, can guarantee effectively that bottom plate 31 can be simultaneously to first battery array 2 and the cooling of second battery array 4, guarantees the cooling effect of battery package 100. Meanwhile, compared with the conventional battery pack, the battery pack 100 has a simple structure, is convenient to install, and simultaneously improves the integration level of the battery pack 100.

According to the utility model discloses battery package 100, through establishing first battery array 2 on first tray 1, second tray 3 is established in first battery array 2's top, and second battery array 4 is established on second tray 3, and is equipped with the runner on bottom plate 31. Therefore, the battery pack 100 is simple in structure and convenient to install, the integration level of the battery pack 100 is improved, and the cooling effect of the battery pack 100 is guaranteed.

According to some embodiments of the present invention, as shown in fig. 6-8, both ends of the bottom plate 31 of the second tray 3 are respectively provided with a liquid inlet 311 and a liquid outlet 312, the liquid inlet 311 and the liquid outlet 312 are communicated with the flow channel 313, the battery pack 100 further includes a liquid inlet pipe 13 and a liquid outlet pipe 14, the liquid inlet pipe 13 is connected to the liquid inlet 311 of the bottom plate 31, and the liquid outlet pipe 14 is connected to the liquid outlet 312 of the bottom plate 31. Referring to fig. 5, the flow passage 313 may include a plurality of flow passage sections that are parallel to each other and spaced apart from each other in the width direction of the bottom plate 31. When the battery pack 100 is cooled, the cooling liquid flowing through the liquid inlet pipe 13 enters the flow channel 313 of the bottom plate 31 from the liquid inlet 311 of the bottom plate 31, and then the cooling liquid cools the first battery array 2 and the second battery array 4 in the process of flowing through the bottom plate 31, and then the cooling liquid flows out from the liquid outlet 312 of the bottom plate 31 and is collected in the liquid outlet pipe 14, so that the cooling of the battery pack 100 is completed. From this, the coolant liquid can flow to in a plurality of runner sections through feed liquor pipe 13 and inlet 311 evenly to can guarantee the refrigerated homogeneity of first battery array 2 and second battery array 4 in the battery package 100 effectively, reduce the appearance of the local difference in temperature of first battery array 2 and second battery array 4, bottom plate 31 and runner 313 play dual cooling effect to the battery package simultaneously, can promote the cooling effect of battery package 100.

Further, the battery pack 100 includes a plurality of second trays 3, the liquid inlet pipe 13 includes a first manifold 131 and a plurality of first branch pipes 132, one end of the first manifold 131 is connected to the outside, the other end of the first manifold 131 is connected to the plurality of first branch pipes 132, the free ends of the plurality of first branch pipes 132 are respectively connected to the liquid inlet 311 of the plurality of second trays 3, and the lengths of the plurality of first branch pipes 132 are equal. For example, in the example of fig. 2 and 6, the battery pack 100 includes two second trays 3, the liquid inlet pipe 13 includes one first main pipe 131 and two first branch pipes 132, one end of the first main pipe 131 is connected to the means for releasing the cooling liquid, the other end of the first main pipe 131 is connected to the two first branch pipes 132, the end of the first branch pipe 132 not connected to the first main pipe 131 is a free end, and the free ends of the two first branch pipes 132 are respectively connected to the liquid inlet ports 311 of the two second trays 3. The lengths of the two first branch pipes 132 are equal, so that the cooling synchronism of the cooling liquid for the two battery arrays can be effectively ensured, and the temperature difference between the two battery arrays is avoided. When the battery pack 100 is cooled, the cooling liquid passes through the first main pipe 131 and then is divided into two first branch pipes 132, and the cooling liquid in the first branch pipes 132 flows into the plurality of flow channels 313 on the bottom plate 31 through the liquid inlet 311, so that the battery pack 100 is cooled.

The liquid outlet pipe 14 includes a second manifold 141 and a plurality of second branches 142, one end of the second manifold 141 is connected to the outside, the other end of the second manifold 141 is connected to the plurality of second branches 142, free ends of the plurality of second branches 142 are respectively connected to the liquid outlets 312 of the plurality of second trays 3, and the lengths of the plurality of second branches 142 are equal. For example, in the example of fig. 2 and 6, the battery pack 100 includes two second trays 3, the outlet pipe 14 includes one second manifold 141 and two second branches 142, one end of the second manifold 141 is connected to the means for collecting the cooling liquid, the other end of the second manifold 141 is connected to the two second branches 142, the end of the second branch 142 not connected to the second manifold 141 is a free end, and the free ends of the two second branches 142 are respectively connected to the outlet ports 312 of the two second trays 3. The two second branch pipes 142 have the same length, which effectively ensures that the cooling liquid can flow out from the two bottom plates at the same time. When the battery pack 100 is cooled, the cooling fluid flowing through the plurality of flow channels 313 of the two bottom plates 3 is collected into the second branch pipes 142 through the two second branch pipes 142, and finally the cooling fluid flows to the cooling fluid collecting device through the second branch pipes 142, thereby completing the entire cooling process of the battery pack 100.

Further, referring to fig. 2, the first tray 1 is provided with a liquid distribution box 12, the liquid distribution box 12 includes a fixing base 123, and a liquid inlet joint 121 and a liquid outlet joint 122 provided on the fixing base 123, one end of the first header pipe 131 is connected to the liquid inlet joint 121 to be connected to the outside through the liquid inlet joint 121, and one end of the second header pipe 141 is connected to the liquid outlet joint 122 to be connected to the outside through the liquid outlet joint 122. So set up, can guarantee the circulation of coolant liquid between the liquid inlet joint 121 of minute liquid box 12, feed liquor pipe 13, drain pipe 14 and the liquid outlet joint 122 of minute liquid box 12 effectively, guarantee the cooling effect of battery package 100. Optionally, the liquid separation box 12 can be integrally formed, so that the manufacturing processes of the liquid separation box 12 can be effectively reduced, and the cost is reduced.

According to some embodiments of the present invention, referring to fig. 2 in combination with fig. 6 to 8, the liquid inlets 311 of the bottom plates 31 of the plurality of second trays 3 are located on the same side in the width direction of the first tray 1, and the liquid outlets 312 of the bottom plates 31 of the plurality of second trays 3 are located on the other side in the width direction of the first tray 1. Therefore, the regularity of the second tray 3 can be effectively ensured, and the processing and assembly of the second tray 3 are facilitated.

According to the utility model discloses a some embodiments, first tray 1 includes base plate 15 and encloses the boundary beam 16 of locating base plate 15 circumference, is equipped with at least one first installation department 11 on the first tray 1, and the outer peripheral edge of bottom plate 31 is equipped with frame 33, is equipped with at least one second installation department 32 on the frame 33, and second installation department 32 links to each other with corresponding first installation department 11. Referring to fig. 2 to 4, the base plate 15 is substantially rectangular, the edge beams 16 are disposed along the circumferential direction of the base plate 15, and the first mounting portions 11 are disposed on the two edge beams 16 in the width direction of the base plate 15. Wherein, the first mounting part 11 can be arranged on the boundary beam 16; alternatively, the first mounting portion 11 may be provided at an edge of the edge beam 16 adjacent to the base plate 15; alternatively, the first attachment portion 11 may be provided at the joint between the base plate 15 and the side member 16. The bottom plate 31 is substantially rectangular, the frames 33 are disposed along the circumferential direction of the bottom plate 31, and the second mounting portions 32 are disposed on the outer surfaces of the two frames 33 in the width direction of the bottom plate 31. When the battery pack 100 is mounted, the upper surface of the first mounting portion 11 contacts the bottom surface of the corresponding second mounting portion 32, and a fastener such as a bolt is fixedly coupled to the first mounting portion 11 through the second mounting portion 32.

The first battery array 2 may be disposed on the substrate 15 of the first tray 1 (i.e., supported on the substrate 15), or disposed on the edge beam 16 of the first tray 1 (i.e., supported on the edge beam 16). Likewise, the second battery array 4 may be disposed on the bottom plate 31 of the second tray 3 (i.e., supported on the bottom plate 31) and may also be disposed on the rim 33 of the second tray 3 (i.e., supported on the rim 33).

According to some embodiments of the present invention, as shown in fig. 2, a plurality of first installation portions 11 are disposed on the first tray 1, the plurality of first installation portions 11 are disposed on the side beam 16 along the width direction of the first tray 1, the outer side of the frame 33 is disposed with a plurality of second installation portions 32, the plurality of second installation portions 32 are disposed on the frame 33 along the width direction of the first tray 1, and the first installation portions 11 located on the same side of the width direction of the first tray 13 are connected to the corresponding second installation portions 32.

Referring to fig. 1 and 2, two first installation parts 11 are respectively disposed on two sides of the first tray 1 in the width direction, two installation parts located on the same side of the first tray 1 are spaced apart from each other in the length direction of the first tray 1, two second installation parts 32 spaced apart from each other are respectively disposed on outer surfaces of the frames 33 facing each other, and each second installation part 32 extends in the direction away from the center of the second tray 3. When the second tray 3 is installed, the upper surface of the first installation part 11 contacts with the bottom surface of the corresponding second installation part 32, and the fastener passes through the second installation part 32 and is fixedly connected with the first installation part 11, so that the firmness between the first installation part 11 and the second installation part 32 can be effectively ensured. In addition, compared with the conventional battery pack, the structural strength of the battery pack 100 can be improved, and the integration level of the structural members in the battery pack 100 and the space utilization rate of the battery pack 100 can be improved, thereby facilitating the miniaturization design of the battery pack 100.

According to some embodiments of the present invention, the battery pack 100 includes a plurality of second trays 3, the plurality of second trays 3 are spaced apart along the length direction of the first tray 1, each second tray 3 is provided with a second mounting portion 32, and the first tray 1 is provided with a first mounting portion 11 corresponding to the second mounting portion 32 of each second tray 3. Referring to fig. 1, the battery pack 100 includes two second trays 3, the two second trays 3 are spaced apart from each other along a length direction of the first tray 1, and each second tray 3 is fixedly connected to the first tray 1 by a second mounting portion 32, so that the firmness of each second tray 3 is ensured.

According to some embodiments of the present invention, the first installation portion 11 is provided with a plurality of first installation holes, the plurality of first installation holes are spaced apart from each other along the length direction of the first installation portion 11, the second installation portion 32 is provided with a plurality of second installation holes, the plurality of second installation holes are spaced apart from each other along the length direction of the second installation portion 32, the plurality of first installation holes and the plurality of second installation holes are arranged correspondingly, and each first installation hole and each second installation hole are fixedly connected through a fastener. Therefore, the firmness of connection between the first mounting part 11 and the corresponding second mounting part 32 can be effectively ensured, and meanwhile, the assembling mode is simple, the operation is convenient and the cost is low.

In some alternative embodiments, each fastener is a rivet, bolt, or the like. With such an arrangement, the structure is simple, and the assembly efficiency of the battery pack 100 can be effectively improved. But is not limited thereto.

In some alternative embodiments, the top of the first battery array 2 and the bottom of the bottom plate 31 are fixed by bonding with a heat conducting structural adhesive. Thereby, the fixing reliability of the second tray 3 can be further enhanced. In addition, the heat conduction structure glue has good heat conductivity, and can effectively transfer the heat generated by the first battery array 2 to the bottom plate 31 through the heat conduction structure glue, so that the cooling effect of the first battery array 2 is ensured, and meanwhile, the structural strength of the battery pack 100 is further enhanced.

According to some embodiments of the utility model, be equipped with a plurality of first battery array 2 on the first tray 1, the battery package 100 includes a plurality of second trays 3, is equipped with a second battery array 4 on every second tray 3, and a plurality of second battery arrays 4 are relative from top to bottom with a plurality of first battery array 2. For example, two first battery arrays 2 are shown in the example of fig. 1 and 2, the two first battery arrays 2 are spaced apart from each other along the length direction of the first tray 1, the two second battery arrays 4 are respectively located in the two second trays 3, and the two first battery arrays 2 and the two second battery arrays 4 respectively correspond to each other up and down one by one, so that the contact areas between the first battery arrays 2 and the bottom plate 31 and the second battery arrays 4 and the bottom plate 31 are increased, the cooling uniformity of the battery pack 100 is improved, the cooling effect of the battery pack 100 is further ensured, the integration level of the battery pack 100 can be effectively improved, the volume of the battery pack 100 is reduced, and the miniaturization design of the battery pack 100 is facilitated.

In some alternative embodiments, as shown in fig. 6 and 7, two ends of the liquid inlet pipe 13 are connected to the liquid inlet ports 311 of the bottom plates 31 of the liquid separation box 12 and the plurality of second trays 3 respectively through the first quick-connect plugs 6, and two ends of the liquid outlet pipe 14 are connected to the liquid outlet ports 312 of the bottom plates 31 of the liquid separation box 12 and the plurality of second trays 3 respectively through the second quick-connect plugs 7. Thus, by using the first quick-connect connector 6 and the second quick-connect connector 7, the assembly efficiency of the battery pack 100 can be further improved.

According to some embodiments of the present invention, referring to fig. 1, battery pack 100 further includes a distribution box 5, wherein distribution box 5 is disposed on first tray 1, and distribution box 5 is disposed between two adjacent first battery arrays 2. Thereby, the distance between the electric distribution box 5 and the two first battery arrays 2 is reduced, so that the length of the power connection of the electric distribution box 5 can be reduced.

According to some embodiments of the present invention, with reference to fig. 1, first battery array 2 is fixedly bonded to first tray 1, and second battery array 4 is fixedly bonded to second tray 3. So set up for battery package 100's simple structure, the handling ease and the installation improve battery package 100's assembly efficiency simultaneously, reduce cost.

According to a second aspect of the present invention, a vehicle (not shown) comprises a battery pack 100 according to the first aspect of the present invention.

According to the utility model discloses the vehicle, through adopting according to the utility model discloses the battery package 100 of above-mentioned first aspect embodiment can improve battery package 100's cooling effect and structural strength effectively.

Other constructions and operations of the battery pack 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, comprising:

a first tray;

at least one first battery array disposed on the first tray, the first battery array including a plurality of battery cells;

the second tray is arranged above the first battery array, is fixedly connected with the first tray and is provided with a bottom plate;

at least one second battery array, the second battery array is established on the second tray, the second battery array includes a plurality of battery cells, be equipped with the runner on the bottom plate, in order to be right first battery array with the heat transfer of second battery array.

2. The battery pack according to claim 1, wherein a liquid inlet and a liquid outlet are respectively formed at two ends of the bottom plate of the second tray, and both the liquid inlet and the liquid outlet are communicated with the flow channel;

the battery pack further comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with the liquid inlet of the bottom plate, and the liquid outlet pipe is connected with the liquid outlet of the bottom plate.

3. The battery pack of claim 2, wherein the battery pack includes a plurality of the second trays;

the liquid inlet pipe comprises a first main pipe and a plurality of first branch pipes, one end of the first main pipe is connected with the outside, the other end of the first main pipe is connected with the plurality of first branch pipes, the free ends of the plurality of first branch pipes are correspondingly connected with the liquid inlets of the plurality of second trays respectively, and the lengths of the plurality of first branch pipes are equal;

the drain pipe includes second house steward and a plurality of second branch pipe, the one end and the external connection of second house steward, the other end and a plurality of second house steward the second branch union coupling, it is a plurality of the free end of second branch pipe respectively with a plurality of the second tray the liquid outlet corresponds continuously, and is a plurality of the length homogeneous phase of second branch pipe equals.

4. The battery pack according to claim 3, wherein the first tray is provided with a liquid distribution box, the liquid distribution box comprises a fixed seat, and a liquid inlet joint and a liquid outlet joint which are arranged on the fixed seat, the one end of the first header pipe is connected with the liquid inlet joint so as to be connected with the outside through the liquid inlet joint, and the one end of the second header pipe is connected with the liquid outlet joint so as to be connected with the outside through the liquid outlet joint.

5. The battery pack according to claim 2, wherein the liquid inlets of the bottom plates of the plurality of second trays are located on the same side in the width direction of the first tray, and the liquid outlets of the bottom plates of the plurality of second trays are located on the other side in the width direction of the first tray.

6. The battery pack of claim 1, wherein the first tray comprises a base plate and a side beam arranged around the periphery of the base plate, and at least one first mounting portion is arranged on the first tray;

the outer peripheral edges of the bottom plates are provided with frames, at least one second installation part is arranged on the frames, and the second installation parts correspond to the first installation parts.

7. The battery pack of claim 6, wherein the first tray is provided with a plurality of first mounting portions, and the plurality of first mounting portions are distributed on the side beam along the width direction of the first tray;

the outer side of the frame is provided with a plurality of second installation parts, and the second installation parts are distributed on the frame along the width direction of the first tray;

the first installation part is positioned on the same side of the width direction of the first tray and is connected with the corresponding second installation part.

8. The battery pack of claim 6, wherein the battery pack comprises a plurality of the second trays, the plurality of second trays being spaced apart along a length of the first tray;

every be equipped with on the second tray the second installation department, be equipped with on the first tray with every the second tray the second installation department is corresponding first installation department.

9. The battery pack according to claim 6, wherein the first mounting portion is provided with a plurality of first mounting holes spaced apart from each other along a length direction of the first mounting portion;

the second mounting part is provided with a plurality of second mounting holes which are spaced from each other along the length direction of the second mounting part;

the plurality of first mounting holes and the plurality of second mounting holes are correspondingly arranged, and each first mounting hole and each second mounting hole are fixedly connected through a fastener.

10. The battery pack of claim 1, wherein the top of the first battery array is adhesively secured to the bottom of the base plate by a thermally conductive adhesive.

11. The battery pack of any one of claims 1-10, wherein a plurality of the first battery arrays are disposed on the first tray;

the battery pack comprises a plurality of second trays, one second battery array is arranged on each second tray, and the second battery arrays are vertically opposite to the first battery arrays.

12. The battery pack of any one of claims 1-10, further comprising:

the block terminal, the block terminal is established on the first tray, the block terminal is located adjacent two between the first battery array, just the block terminal with first battery array with the equal electricity of second battery array is connected.

13. The battery pack of any one of claims 1-10, wherein the first battery array is adhesively secured to the first tray and the second battery array is adhesively secured to the second tray.

14. A vehicle characterized by comprising a battery pack according to any one of claims 1-13.