CN210430027U

CN210430027U - Air-cooled battery pack

Info

Publication number: CN210430027U
Application number: CN201921242142.3U
Authority: CN
Inventors: 邓桂超; 邓桂深; 陈兵山
Original assignee: Dongguan Elite New Energy Co Ltd
Current assignee: Dongguan Elite New Energy Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-04-28
Anticipated expiration: 2029-08-01

Abstract

The utility model provides an air-cooled battery pack, which comprises a battery box, a plurality of battery modules which are contained in the battery box and are arranged side by side at intervals, and a heat exchange structure which is fixedly connected with and communicated with the battery box; the heat exchange structure comprises a radiating fin, wherein the radiating fin comprises a heat conducting plate, and a plurality of first fins and a plurality of second fins which are respectively fixed on two opposite sides of the heat conducting plate; the battery box is provided with clamping holes, the second fin plates penetrate through the clamping holes from the inside of the battery box, and the heat conducting plate is fixed with the battery box; a ventilation air channel is arranged in each battery module, and one end of each ventilation air channel corresponds to the plurality of first fins. The utility model provides an air-cooled battery package, the heat dissipation is even and the radiating efficiency is high.

Description

Air-cooled battery pack

[ technical field ] A method for producing a semiconductor device

The utility model relates to a power battery field especially relates to an air-cooled battery package.

[ background of the invention ]

Due to the rapid development of new energy technologies and the gradual maturity of lithium ion battery technologies, lithium ion batteries are increasingly applied to various aspects of life, especially the field of electric vehicles. With the prosperity of the market, the requirements of consumers on the safety, endurance and quick charging of the electric vehicle are higher and higher. The battery box is used as the core of the electric vehicle, a large amount of heat can be generated in the process of rapid charging and discharging to cause the temperature in the battery box to rise, however, the lithium ion battery has low charging and discharging efficiency and poor cycle life under the high-temperature condition, and the thermal runaway is easy to cause fire.

The conventional air cooling device has a simple structure, but is easy to generate eddy current in the battery box so as to cause uneven heat dissipation in the battery box and influence the heat dissipation effect; although the liquid cooling device has a good heat dissipation effect, the liquid cooling device occupies a large space, has a complex structure and is high in cost.

In view of the above, it is desirable to provide a new air-cooled battery pack to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims at providing an even and the good forced air cooling battery package of radiating efficiency of heat dissipation.

In order to achieve the above object, the present invention provides an air-cooled battery pack, which includes a battery box, a plurality of battery modules housed in the battery box and arranged side by side at intervals, and a heat exchange structure fixedly connected to and communicated with the battery box; the heat exchange structure comprises a radiating fin, wherein the radiating fin comprises a heat conducting plate, and a plurality of first fins and a plurality of second fins which are respectively fixed on two opposite sides of the heat conducting plate; the battery box is provided with clamping holes, the second fin plates penetrate through the clamping holes from the inside of the battery box, and the heat conducting plate is fixed with the battery box; a ventilation air channel is arranged in each battery module, and one end of each ventilation air channel corresponds to the plurality of first fins.

In a preferred embodiment, each battery module includes a plurality of module units arranged side by side and two end plates disposed at both ends of the plurality of module units; each module unit is provided with at least one ventilation cavity, and each end plate is provided with a ventilation opening corresponding to the ventilation cavity; the ventilation air channel is enclosed by the ventilation cavity and the ventilation opening.

In a preferred embodiment, each module unit comprises two brackets which are oppositely arranged at intervals and a plurality of single batteries which are accommodated between the two brackets; each support comprises a base plate and a plurality of containing cylinders formed by extending from the base plate to the surface of the other support; a first ventilation hole is formed in each base plate, and the ventilation cavity is formed by the first ventilation holes of the two supports and the single batteries surrounding the first ventilation holes in a surrounding mode.

In a preferred embodiment, each battery module further includes an air guiding cover sleeved on the plurality of module units and the two end plates, and a first fan fixed on one end plate away from the module units, wherein the first fan corresponds to the ventilation air duct and is close to the heat dissipation fins.

In a preferred embodiment, the battery box comprises a box body and a box cover which are mutually covered, wherein the box body comprises a bottom wall and a first side wall formed by extending from the edge of the bottom wall; the box cover comprises a top wall and a second side wall formed by extending from the edge of the top wall; one end of the first side wall, which is far away from the bottom wall, is abutted with one end of the second side wall, which is far away from the top wall; the clamping hole is formed in the first side wall.

In a preferred embodiment, the heat-conducting plate comprises a heat exchange zone and a fixing zone surrounding the heat exchange zone; the plurality of first fins are arranged in parallel at intervals and are vertically connected to one side surface of the heat exchange area, and the plurality of second fins are arranged in parallel at intervals and are vertically connected to the other side surface of the heat exchange area, which is far away from the first fins.

In a preferred embodiment, the heat exchange structure further comprises a wind shield covering the heat sink, wherein the wind shield comprises two first baffle plates arranged oppositely at intervals and a second baffle plate vertically connected with the two first baffle plates; each first baffle plate comprises a fixed plate and a connecting plate which is formed by extending from one end of the fixed plate, which is far away from the second baffle plate, to the direction far away from the other first baffle plate; a plurality of fixing holes are formed around the clamping hole of the first side wall; the shape of the clamping hole corresponds to that of the heat exchange area, and the fixing area is provided with matching holes which correspond to the fixing holes one to one; the connecting plate is provided with a plurality of mounting holes corresponding to the matching holes, the wind shield covers the second fins, and the mounting holes, the matching holes and the fixing holes correspond to each other and are fixedly connected through fixing pieces.

In a preferred embodiment, the windshield further includes a second fan fixed to one end of the two first baffles and one end of the second baffle.

The utility model provides an air-cooled battery package, through first fan will heated air in the ventilation duct blow off and with heat transfer structure carries out the heat exchange, and refrigerated air warp gap between the battery module flows in once more in the ventilation duct, realize cold and hot air and be in circulation in the battery box flows. The utility model provides an air-cooled battery package, the heat dissipation is even and the radiating efficiency is good.

[ description of the drawings ]

Fig. 1 is a perspective view of the air-cooled battery pack provided by the present invention.

Fig. 2 is a partial structural schematic view of the air-cooled battery pack shown in fig. 1.

Fig. 3 is an exploded view of a battery module in the air-cooled battery pack shown in fig. 2.

Fig. 4 is a perspective view of a partial structure of a module unit in the battery module shown in fig. 3.

Fig. 5 is a schematic diagram of the box body and the collection box in the air-cooled battery pack shown in fig. 2.

Fig. 6 is an exploded view of the heat exchanger in the air-cooled battery pack shown in fig. 2.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

Referring to fig. 1 and 2, the present invention provides an air-cooled battery pack 100, which includes a battery box 10, a plurality of battery modules 20 housed in the battery box 10 and arranged side by side at intervals, and a heat exchange structure 30 fixedly connected to and communicated with the battery box 10.

Referring to fig. 5 and fig. 6, the heat exchanging structure 30 includes a heat sink 31, the heat sink 31 includes a heat conducting plate 311, and a plurality of first fins 312 and a plurality of second fins 313 fixed on two opposite sides of the heat conducting plate 311 respectively; the battery box 10 is provided with a clamping hole 101, the plurality of second fins 313 penetrate through the clamping hole 101 from the inside of the battery box 10, and the heat conducting plate 311 is fixed with the battery box 10; a ventilation air duct (not shown) is provided in each battery module 20, and one end of the ventilation air duct corresponds to the plurality of first fins 312. The heat generated by the plurality of battery modules 20 flows to the plurality of first fins 312 through the ventilation air duct and performs sufficient heat exchange with the first fins 312, and the plurality of first fins 312 perform sufficient heat exchange with the outside after performing heat exchange with the heat conduction plate 311 and the plurality of second fins 313, thereby achieving the purpose of improving the cooling effect.

Referring to fig. 3 and 4, specifically, each battery module 20 includes a plurality of module units 21 arranged side by side and two end plates 22 disposed at two ends of the module units 21; each module unit 21 is provided with at least one ventilation cavity 2101, and each end plate 22 is provided with a ventilation opening 221 corresponding to the ventilation cavity 2101; the ventilation duct is enclosed by the ventilation cavity 2101 and the ventilation opening 221.

Furthermore, each module unit 21 includes two brackets 211 disposed opposite to each other at an interval, and a plurality of unit batteries 212 accommodated between the two brackets 211; each of the brackets 211 includes a base plate 2111 and a plurality of receiving tubes 2112 formed to extend from the base plate 2111 toward the surface of the other bracket 211; each base plate 2111 is provided with a first vent hole (not shown), and the vent cavity 2101 is enclosed by the first vent holes of the two brackets 211 and the unit batteries 212 surrounding the first vent holes.

Each battery module 20 further includes an air guiding cover 23 sleeved on the plurality of module units 21 and the two end plates 22, and a first fan 24 fixed on one end plate 22 away from the module unit 21, wherein the first fan 24 corresponds to the ventilation air duct and is close to the heat sink 31. The air guide cover 23 is sleeved on the outer portion of the ventilation air duct, and the first fan 24 is arranged on the outer portion of the ventilation air duct, so that on one hand, air flowing in the ventilation air duct is facilitated, airflow disorder of the ventilation air duct among the plurality of battery modules 20 is prevented, on the other hand, air flowing in the ventilation air duct is accelerated, and cooling efficiency is improved.

Referring to fig. 1, 2 and 5, the battery box 10 includes a box body 11 and a box cover 12 that are mutually covered, the box body 11 includes a bottom wall 111 and a first side wall 112 formed by extending from an edge of the bottom wall 111; the box cover 12 includes a top wall 121 and a second side wall 122 extending from an edge of the top wall 121; one end of the first side wall 112 away from the bottom wall 111 abuts one end of the second side wall 122 away from the top wall 121; the first sidewall 112 is opened on the fastening hole 101.

Referring to fig. 6, in the present embodiment, the heat conducting plate 311 includes a heat exchanging region 3111 and a fixing region 3112 surrounding the heat exchanging region 3111; the plurality of first fins 312 are arranged in parallel and spaced apart and perpendicularly connected to one side surface of the heat exchange area 3111, and the plurality of second fins 313 are arranged in parallel and perpendicularly connected to the other side surface of the heat exchange area 3111 facing away from the first fins 312. The plurality of first fins 312 and the plurality of second fins 313 are vertically arranged, so that on one hand, hot air can be trapped between the first fins 312, the hot air can be fully subjected to heat exchange with the first fins 312, on the other hand, air on the surfaces of the second fins 313 can flow conveniently, and the heat exchange efficiency between the second fins 313 and the outside air is improved.

The heat exchange structure 30 further includes a wind shield 32 covering the heat sink 31, and the wind shield 32 includes two first baffles 321 arranged opposite to each other at an interval and a second baffle 322 vertically connected to the two first baffles 321; each first baffle 321 comprises a fixing plate 3211 and a connecting plate 3212 formed by extending from one end of the fixing plate 3211 far away from the second baffle 322 to a direction far away from the other first baffle 321; a plurality of fixing holes 1011 are formed around the clamping hole 101 of the first side wall 112; the shape of the fastening hole 101 corresponds to the heat exchange area 3111, and the fixing area 3112 is provided with matching holes 3113 corresponding to the fixing holes 1011 one to one; a plurality of mounting holes 3213 corresponding to the matching holes 3113 are formed in the connecting plate 3212, the windshield 32 covers the second fins 313, and the mounting holes 3213, the matching holes 3113, and the fixing holes 1011 correspond to each other and are fixedly connected by a fixing element, so that the heat exchange structure 30 is conveniently mounted.

The wind shield 32 further includes a second fan 323 fixed to one end of the two first baffles 321 and one end of the second baffle 322, and the second fan 323 is configured to increase the air flow speed in the wind scooper 32 and increase the heat exchange efficiency.

The utility model provides an air-cooled battery package 100, through first fan 24 will heated air in the ventilation air duct blow off and with heat transfer structure 30 carries out the heat exchange, and refrigerated air warp gap between the battery module 10 flows in once more in the ventilation air duct, realize cold and hot air and be in circulation among the battery box 30 flows. The utility model provides an air-cooled battery package 100, the even just radiating efficiency of heat dissipation is good.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. An air-cooled battery pack, its characterized in that: the battery box comprises a battery box, a plurality of battery modules which are accommodated in the battery box and are arranged side by side at intervals, and a heat exchange structure which is fixedly connected with and communicated with the battery box; the heat exchange structure comprises a radiating fin, wherein the radiating fin comprises a heat conducting plate, and a plurality of first fins and a plurality of second fins which are respectively fixed on two opposite sides of the heat conducting plate; the battery box is provided with clamping holes, the second fin plates penetrate through the clamping holes from the inside of the battery box, and the heat conducting plate is fixed with the battery box; a ventilation air channel is arranged in each battery module, and one end of each ventilation air channel corresponds to the plurality of first fins.

2. The air-cooled battery pack of claim 1, wherein: each battery module comprises a plurality of module units arranged side by side and two end plates arranged at two ends of the module units; each module unit is provided with at least one ventilation cavity, and each end plate is provided with a ventilation opening corresponding to the ventilation cavity; the ventilation air channel is enclosed by the ventilation cavity and the ventilation opening.

3. The air-cooled battery pack of claim 2, wherein: each module unit comprises two brackets which are oppositely arranged at intervals and a plurality of single batteries which are accommodated between the two brackets; each support comprises a base plate and a plurality of containing cylinders formed by extending from the base plate to the surface of the other support; a first ventilation hole is formed in each base plate, and the ventilation cavity is formed by the first ventilation holes of the two supports and the single batteries surrounding the first ventilation holes in a surrounding mode.

4. The air-cooled battery pack of claim 2, wherein: each battery module further comprises an air guiding cover sleeved on the plurality of module units and the two end plates and a first fan fixed on one end plate and away from the module units, wherein the first fan corresponds to the ventilation air channel and is close to the radiating fins.

5. The air-cooled battery pack of claim 4, wherein: the battery box comprises a box body and a box cover which are mutually covered, and the box body comprises a bottom wall and a first side wall formed by extending from the edge of the bottom wall; the box cover comprises a top wall and a second side wall formed by extending from the edge of the top wall; one end of the first side wall, which is far away from the bottom wall, is abutted with one end of the second side wall, which is far away from the top wall; the clamping hole is formed in the first side wall.

6. The air-cooled battery pack of claim 5, wherein: the heat conducting plate comprises a heat exchange area and a fixing area surrounding the heat exchange area; the plurality of first fins are arranged in parallel at intervals and are vertically connected to one side surface of the heat exchange area, and the plurality of second fins are arranged in parallel at intervals and are vertically connected to the other side surface of the heat exchange area, which is far away from the first fins.

7. The air-cooled battery pack of claim 6, wherein: the heat exchange structure further comprises a wind shield covering the radiating fins, and the wind shield comprises two first baffle plates which are oppositely arranged at intervals and a second baffle plate which is vertically connected with the two first baffle plates; each first baffle plate comprises a fixed plate and a connecting plate which is formed by extending from one end of the fixed plate, which is far away from the second baffle plate, to the direction far away from the other first baffle plate; a plurality of fixing holes are formed around the clamping hole of the first side wall; the shape of the clamping hole corresponds to that of the heat exchange area, and the fixing area is provided with matching holes which correspond to the fixing holes one to one; the connecting plate is provided with a plurality of mounting holes corresponding to the matching holes, the wind shield covers the second fins, and the mounting holes, the matching holes and the fixing holes correspond to each other and are fixedly connected through fixing pieces.

8. The air-cooled battery pack of claim 7, wherein: the windshield cover further comprises a second fan fixed at one end of the two first baffles and one end of the second baffle.