CN111555000A - Heat dissipation battery module and battery package - Google Patents

Abstract

The invention relates to the technical field of battery packs, in particular to a heat-dissipating battery module and a battery pack. The heat-dissipating battery module includes a battery device and a heat-dissipating device; the heat-dissipating device includes at least one heat-dissipating component; each heat-dissipating component includes a plurality of first connections A tube and at least two heat dissipation plates, the heat dissipation plates of the heat dissipation assembly are arranged on at least two surfaces of the battery device, the inside of the heat dissipation plates are all provided with flow channels, and the flow channels of the heat dissipation plates located on different surfaces of the battery device are connected by a first connection The tubes communicate with each other; the present invention provides at least one heat dissipation assembly, and each heat dissipation assembly includes a plurality of first connecting pipes and at least two heat dissipation plates, and the heat dissipation plates of the heat dissipation assembly are arranged on at least two surfaces of the battery device, increasing the The heat dissipation contact area of the battery module improves the heat dissipation capacity of the battery module; and the heat dissipation plates are all provided with flow channels, and the flow channels in the heat dissipation plates are connected to each other through the first connecting pipe, so as to realize the different surfaces of the battery module. temperature equalization effect.

Description

A heat dissipation battery module and battery pack

technical field

The present invention relates to the technical field of battery packs, in particular to a heat dissipation battery module and a battery pack.

Background technique

The promotion of new energy has been actively implemented in various countries, and the rapid development of new energy vehicles has become particularly important to solve problems such as high-power rapid charge and discharge and battery heat dissipation.

The most common ways to increase the heat dissipation power in the field of new energy battery packs are: 1. Increase the temperature difference between the coolant and the battery; 2. Reduce the thermal resistance of the battery module; 3. Increase the heat dissipation area of the battery; and the third item is The easiest way to realize, and also the most common way; the battery pack of the prior art often cools the module by fixing a liquid cooling plate on the lower tray. However, in this way, the liquid cooling plate can only contact the bottom surface of the cell, and the contact area is small. If the cooling fin plate is added between the cells, it will increase the cost and increase the weight of the whole package, and the grouping efficiency is low. In addition, the heat transfer effect of the fin plate is not ideal, and it is inconvenient to assemble. Alternatively, the cooling of the battery module in the prior art is usually by fixing the water cooling plate on the lower casing, but this method can only cool the bottom surface of the battery cell, and the contact area between the battery core and the cold plate is small, which cannot meet the requirements of high power. charging and discharging requirements.

Based on the shortcomings of the prior art, it is urgent to research a heat dissipation battery module and a battery pack to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a heat dissipation battery module and a battery pack. The present invention provides at least one heat dissipation component, and each of the heat dissipation components includes a plurality of first connecting pipes and at least two heat dissipation components. The heat dissipation plate of the heat dissipation assembly is arranged on at least two surfaces of the battery device, which increases the heat dissipation contact area of the battery module and improves the heat dissipation capacity of the battery module; Through the first connecting pipe, the flow channels in each heat dissipation plate are connected to each other, which realizes the effect of equalizing the temperature of different surfaces of the battery module, and also avoids setting a heat dissipation structure on each battery cell, realizing The simplification of the structure of the battery module facilitates assembly.

The invention discloses a heat dissipation battery module, comprising a battery device and a heat dissipation device;

The heat dissipation device includes at least one heat dissipation component;

Each of the heat dissipation assemblies includes a plurality of first connecting pipes and at least two heat dissipation plates, the heat dissipation plates of the heat dissipation assembly are disposed on at least two surfaces of the battery device, and the heat dissipation plates are internally provided with flow radiators. The flow channels of the heat dissipation plates located on different surfaces of the battery device communicate with each other through the first connecting pipe.

Further, the heat dissipation device includes a second connection pipe and at least two heat dissipation assemblies, and the at least two heat dissipation assemblies are connected through the second connection pipe.

Further, the heat dissipation device includes a first heat dissipation assembly, the first heat dissipation assembly includes a first heat dissipation plate, a second heat dissipation plate and a third heat dissipation plate, and the second heat dissipation plate and the third heat dissipation plate are respectively arranged on the first heat dissipation plate. Both sides of a heat sink;

the first heat dissipation plate includes a first flow channel;

the second heat dissipation plate includes a second flow channel;

the third heat dissipation plate includes a third flow channel;

The second flow passage communicates with the first flow passage through the first connecting pipe, and the third flow passage communicates with the first flow passage through the first connecting pipe.

Further, the first heat dissipation plate further includes a first surface, a second surface, a third surface and a fourth surface arranged oppositely;

The first surface is also provided with a fifth connecting pipe for connecting with the external waterway;

The second surface is also provided with a first installation hole, and the first installation hole is provided with a first connector;

The third surface is provided with a first water inlet hole, and the fourth surface is provided with a second water inlet hole, and the first water inlet hole and the second water inlet hole are both connected with the first flow channel. Connected.

Further, the first heat dissipation plate, the second heat dissipation plate and the third heat dissipation plate are respectively disposed on three surfaces of the battery device; the first heat dissipation plate, the second heat dissipation plate and the The third heat dissipation plate is connected to the battery device through thermal conductive structural adhesive.

Further, the heat dissipation assembly further includes a second heat dissipation assembly, and the second heat dissipation assembly includes a fourth heat dissipation plate, a fifth heat dissipation plate and a sixth heat dissipation plate; the fifth heat dissipation plate and the sixth heat dissipation plate are respectively arranged on both sides of the fourth heat dissipation plate;

the fourth heat dissipation plate includes a fourth flow channel;

the fifth heat dissipation plate includes a fifth flow channel;

The sixth heat dissipation plate includes a sixth flow channel;

The fifth flow passage communicates with the fourth flow passage through the first connecting pipe, and the sixth flow passage communicates with the fourth flow passage through the first connecting pipe.

Further, the fourth heat dissipation plate, the fifth heat dissipation plate and the sixth heat dissipation plate are respectively arranged on three surfaces of the battery device, and the fourth heat dissipation plate, the fifth heat dissipation plate and the The sixth heat dissipation plate is connected with the battery device through thermal conductive structural adhesive.

Further, the fourth heat dissipation plate further includes a first connecting member, the fourth heat dissipation plate and the first heat dissipation plate are arranged on the same side of the battery device, and the fourth heat dissipation plate is connected to the battery device through the first connecting member. The first heat dissipation plate is connected, and the first flow channel and the fourth flow channel are communicated through the second connecting pipe.

Another aspect of the present invention protects a battery pack, including a casing, a tray and the above-mentioned heat dissipation battery module;

One end of the tray is open, the casing is disposed at the open end of the tray, the casing and the tray are connected to form an accommodation cavity, and the heat dissipation battery module is arranged in the accommodation cavity.

Further, the tray includes a third connecting pipe, a seventh flow channel and a sixth water inlet hole, and both the third connecting pipe and the sixth water inlet hole are communicated with the seventh flow channel;

the housing includes a fourth connection pipe and an eighth flow passage, the fourth connection pipe communicates with the eighth flow passage;

The fourth connection pipe is arranged in the sixth water inlet hole, and the seventh flow channel communicates with the eighth flow channel.

Implementing the embodiment of the present invention has the following beneficial effects:

1. In the present invention, at least one heat dissipation assembly is provided, and each of the heat dissipation assemblies includes a plurality of first connecting pipes and at least two heat dissipation plates, and the heat dissipation plates of the heat dissipation assembly are arranged at least on two sides of the battery device. On the surface, this increases the heat dissipation contact area of the battery module and improves the heat dissipation capability of the battery module; and the heat dissipation plates are all provided with flow channels, and the flow channels in the heat dissipation plates are communicated with each other through the first connecting pipe , which achieves the effect of equalizing the temperature of different surfaces of the battery module, and also avoids disposing a heat dissipation structure on each battery cell, simplifies the structure of the battery module, and facilitates assembly.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following will briefly introduce the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a structural diagram of the heat dissipation battery module according to this embodiment;

Fig. 2 is the sectional view of Fig. 1;

FIG. 3 is a structural diagram of the battery pack according to this embodiment;

Fig. 4 is the sectional view of Fig. 3;

FIG. 5 is a structural diagram of a battery pack according to another embodiment.

Among them, the reference signs in the figure correspond to:

1-battery module; 2-first heat sink; 3-second heatsink; 4-third heatsink; 5-fourth heatsink; 6-fifth heatsink; 7-sixth heatsink; 8- Shell; 9-tray; 11-first connecting pipe; 12-second connecting pipe; 21-second water inlet; 22-first surface; 23-second surface; 24-fourth surface; 25-th Five connecting pipes; 26-first installation hole; 51-fifth water inlet hole; 81-fourth connecting pipe; 91-partition plate; 92-third connecting pipe; 93-sixth water inlet hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

The prior art has the following disadvantages: the battery pack of the prior art often cools the module by fixing a liquid cooling plate on the lower tray. However, in this way, the liquid cooling plate can only contact the bottom surface of the cell, and the contact area is small. If the cooling fin plate is added between the cells, it will increase the cost and increase the weight of the whole package, and the grouping efficiency is low. In addition, the heat transfer effect of the fin plate is not ideal, and it is inconvenient to assemble. Alternatively, the cooling of the battery module in the prior art is usually by fixing the water cooling plate on the lower casing, but this method can only cool the bottom surface of the battery cell, and the contact area between the battery core and the cold plate is small, which cannot meet the requirements of high power. charging and discharging requirements.

In view of the defects of the prior art, the present invention provides at least one heat dissipation assembly, and each of the heat dissipation assemblies includes a plurality of first connecting pipes and at least two heat dissipation plates, and the heat dissipation plates of the heat dissipation assembly are arranged at least on the On the two surfaces of the battery device, this increases the heat dissipation contact area of the battery module, and improves the heat dissipation capacity of the battery module; and the heat dissipation plates are all provided with flow channels, and the first connection pipes are used to make the inside of each heat dissipation plate. The flow channels of the battery modules are connected to each other, which achieves the effect of equalizing the temperature of different surfaces of the battery module, and also avoids disposing a heat dissipation structure on each battery cell, thereby simplifying the structure of the battery module and facilitating assembly.

Example 1

Referring to FIGS. 1 to 5 , this embodiment provides a heat dissipation battery module and a battery pack, and the heat dissipation battery module includes a battery device 1 and a heat dissipation device;

The heat dissipation device includes at least one heat dissipation component;

Each of the heat dissipation assemblies includes a plurality of first connecting pipes 11 and at least two heat dissipation plates, the heat dissipation plates of the heat dissipation assembly are disposed on at least two surfaces of the battery device 1, and the heat dissipation plates are disposed inside There are flow channels, and the flow channels of the cooling plates located on different surfaces of the battery device communicate with each other through the first connecting pipe 11 .

It should be noted that: since the temperature of different surfaces of the battery device 1 may be different, in this embodiment, the flow channels arranged in the heat dissipation plates on different surfaces of the battery device 1 are connected to each other, so that the battery modules are different from each other. The effect of surface temperature equalization.

Specifically, the battery device 1 is composed of a plurality of battery cells. In this embodiment, disposing a heat dissipation structure on each battery cell is avoided, thereby simplifying the structure of the battery module and facilitating assembly.

Preferably, the heat dissipation device includes a second connection pipe 12 and at least two heat dissipation assemblies, and the at least two heat dissipation assemblies are connected through the second connection pipe 12 .

Preferably, the heat dissipation device includes a first heat dissipation assembly, the first heat dissipation assembly includes a first heat dissipation plate 2, a second heat dissipation plate 3 and a third heat dissipation plate 4, the second heat dissipation plate 3 and the third heat dissipation plate 4 are respectively arranged on both sides of the first heat dissipation plate 2;

The first heat dissipation plate 2 includes a first flow channel;

The second heat dissipation plate 3 includes a second flow channel;

The third heat dissipation plate 4 includes a third flow channel;

The second flow passage communicates with the first flow passage through the first connecting pipe 11 , and the third flow passage communicates with the first flow passage through the first connecting pipe 11 .

Specifically, the first radiating plate 2 is provided with the first connecting pipe 11 and the second connecting pipe 12 .

Preferably, the first heat dissipation plate 2 further includes a first surface 22, a second surface 23, a third surface and a fourth surface 24 arranged opposite to each other;

The first surface 22 is also provided with a fifth connecting pipe 25 for connecting with the external waterway;

The second surface 23 is further provided with a first mounting hole 26, and a first connecting member is provided in the first mounting hole 26;

The third surface is provided with a first water inlet hole, the fourth surface 24 is provided with a second water inlet hole 21, and both the first water inlet hole and the second water inlet hole 21 are the same as the The first flow channel is communicated.

Preferably, the first heat dissipation plate 2 , the second heat dissipation plate 3 and the third heat dissipation plate 4 are respectively disposed on three surfaces of the battery device 1 ; the first heat dissipation plate 2 , the Both the second heat dissipation plate 3 and the third heat dissipation plate 4 are connected to the battery device 1 through thermal conductive structural adhesive.

Specifically, both the second heat dissipation plate 3 and the third heat dissipation plate 4 are provided with the first connecting pipe 11 , and the first connecting pipe 11 on the second heat dissipation plate 3 is disposed on the In the first water inlet hole, the first connecting pipe 11 on the third cooling plate 4 is arranged in the second water inlet hole 21 .

Preferably, the heat dissipation assembly further includes a second heat dissipation assembly, and the second heat dissipation assembly further includes a fourth heat dissipation plate 5, a fifth heat dissipation plate 6 and a sixth heat dissipation plate 7; the fifth heat dissipation plate 6 and the The sixth heat dissipation plate 7 is respectively arranged on both sides of the fourth heat dissipation plate 5;

The fourth heat dissipation plate 5 includes a fourth flow channel;

The fifth heat dissipation plate 6 includes a fifth flow channel;

The sixth heat dissipation plate 7 includes a sixth flow channel;

The fifth flow passage communicates with the fourth flow passage through the first connecting pipe 11 , and the sixth flow passage communicates with the fourth flow passage through the first connecting pipe 11 .

Specifically, the fourth heat dissipation plate 5 also includes a third water inlet hole, a fourth water inlet hole and a fifth water inlet hole 51 ; the fifth heat dissipation plate 6 and the sixth heat dissipation plate 7 are provided with The first connecting pipe 11 and the first connecting pipe 11 on the first radiating plate 2 are arranged in the third water inlet hole, and the first connecting pipe 11 on the fifth radiating plate 6 11 is arranged in the fourth water inlet hole, and the first connecting pipe 11 on the sixth cooling plate 7 is arranged in the fifth water inlet hole 51 .

Specifically, both the first connecting pipe 11 and the second connecting pipe 12 are fixedly arranged on the corresponding heat dissipation plates.

When the first connecting pipe 11 and the second connecting pipe 12 are fixedly arranged on the corresponding radiating plate, the first connecting pipe 11 or the second connecting pipe 12 only needs to be inserted into the inlet of the corresponding radiating plate. The water hole can complete the installation, which realizes the rapid installation of the heat dissipation component.

In other embodiments, the first connecting pipe 11 and the second connecting pipe 12 are not fixedly arranged on the corresponding heat dissipation plate, as long as the first connecting pipe 11 and the second connecting pipe 12 are ensured to have multiple The flow channels in each of the heat dissipation plates only need to be connected with each other, which makes the installation operation more convenient.

Preferably, the fourth heat dissipation plate 5 , the fifth heat dissipation plate 6 and the sixth heat dissipation plate 7 are respectively disposed on three surfaces of the battery device 1 , the fourth heat dissipation plate 5 , the sixth heat dissipation plate 7 The fifth heat dissipation plate 6 and the sixth heat dissipation plate 7 are both connected to the battery device 1 through thermal conductive structural adhesive.

Preferably, the fourth heat dissipation plate 5 further includes a first connector, the fourth heat dissipation plate 5 and the first heat dissipation plate 2 are disposed on the same side of the battery device 1 , and the fourth heat dissipation plate 5 passes through the A connecting piece is connected to the first cooling plate 2 , and the first flow channel and the fourth flow channel are communicated through the second connecting pipe 12 .

Specifically, the battery device 1 includes at least one layer of battery modules, that is, the battery modules are arranged in a single layer, or the battery modules are arranged in multiple layers in a stacked arrangement.

When the battery device 1 is a single-layer battery module, the surface of the single-layer battery module is provided with the first heat dissipation component, the first heat dissipation plate 2, the second heat dissipation plate 3 and the The third heat dissipation plate 4 is respectively arranged on different surfaces of the single-layer battery module, and the height of the first heat dissipation plate 2 is substantially equal to the height of the single-layer battery module, that is, the single-layer battery module A set of heat dissipation components can also be regarded as only the first heat dissipation component is provided on the single-layer battery module.

Specifically, the single-layer battery module includes a fifth surface, a sixth surface and a seventh surface, the first heat dissipation plate 2 is bonded to the fifth surface of the single-layer module, and the second heat dissipation plate 3 is bonded to the sixth surface of the single-layer module, the third heat dissipation plate 4 is bonded to the seventh surface of the single-layer module, and the sixth surface is opposite to the seventh surface set up.

Specifically, the length of the first heat dissipation plate 2 is equal to the length of the fifth surface, the length of the second heat dissipation plate 3 is equal to the length of the third heat dissipation plate 4, and the second heat dissipation plate The length of 3 is slightly greater than the length of the sixth surface.

Specifically, the fourth flow channel, the fifth flow channel, and the sixth flow channel may all have any shape, as long as the heat dissipation capability can be improved.

Specifically, the fourth flow channel includes a sixth passage, a seventh passage and an eighth passage.

Specifically, the first flow channel, the second flow channel and the third flow channel can be any shape as long as the heat dissipation capability can be improved.

Preferably, the first flow channel includes a first passage, a second passage, a third passage, a fourth passage and a fifth passage.

One end of the first passage is communicated with one end of the fourth passage, and the other end of the first passage is communicated with one of the first water inlet holes; one end of the second passage is connected to the fifth passage. One end is communicated, and the other end of the second passage is communicated with one of the second water inlet holes 21;

One end of the third passage communicates with the other second water inlet hole 21 , and the other end of the third passage communicates with the other first water inlet hole.

The first connecting pipe 11 is provided at the communication position of the first passage and the fourth passage, and the first connecting pipe 11 is provided at the communication position of the second passage and the fifth passage;

The other end of the fourth passage communicates with one end of the sixth passage, and the other end of the fifth passage communicates with one end of the seventh passage;

The other end of the sixth passage is in communication with one of the fourth water inlet holes, the other end of the seventh passage is in communication with the fifth water inlet hole 51 ; one end of the eighth passage is in communication with the other The fourth water inlet hole is in communication, and the other end of the eighth passage is in communication with the other fifth water inlet hole 51 .

The flow process of the cooling liquid of the single-layer module: the cooling liquid enters the first flow channel in the first cooling plate 2 from the fifth connecting pipe 25, and then the cooling liquid enters the second cooling plate 3 and the cooling liquid respectively. The third cooling plate 4; when the cooling liquid enters the second cooling plate 3: the cooling liquid enters the second flow channel in the second cooling plate 3 through one of the first water inlet holes, The cooling liquid flows back to the first flow channel in the first cooling plate 2 through the other first water inlet hole;

When the cooling liquid enters the third heat dissipation plate 4: the cooling liquid enters the third flow channel in the third heat dissipation plate 4 through one of the second water inlet holes 21, and the cooling liquid is then passed through The other second water inlet hole 21 flows back into the first flow channel in the first heat dissipation plate 2 .

Specifically, the cooling liquid is any liquid that can achieve a cooling function. In this embodiment, the cooling liquid is water.

In other embodiments, the battery module may be configured for double-sided cooling: a cooling plate replaces the module side plate, and the first heat dissipation plate 2 is used for current collection.

In another embodiment, the battery module can also be configured to be cooled on three sides: a cooling plate replaces one side plate and a bottom plate of the module, and the first heat dissipation plate 2 is used for current collection.

Specifically, the first passage and the second passage of the first flow channel in the first heat dissipation plate 2 are both communicated with the third passage, thereby reducing the effect of flow resistance in the flow channel.

In other embodiments, it may be configured that the first passage of the first flow channel is not communicated with the third passage, and the second passage is not communicated with the third passage.

In other embodiments, when the battery device 1 is a single-layer battery module, a plurality of sets of heat dissipation components are disposed on the surface of the single-layer battery module, that is, the height of the heat dissipation plate is much smaller than that of the single-layer battery module. The height of the battery module.

When the battery device 1 is a multi-layer battery module (at least two layers), the present embodiment is described with two layers, and the double-layer battery module can be regarded as two single-layer battery modules stacked in layers. The surface of one of the single-layer battery modules is provided with the first heat dissipation assembly, and the first heat dissipation plate 2, the second heat dissipation plate 3 and the third heat dissipation plate 4 are respectively disposed on the single layer. On different surfaces of the battery module, and the height of the first heat dissipation plate 2 is basically equal to the height of the single-layer battery module, that is, a single-layer battery module is provided with a set of heat dissipation components, which can also be regarded as the single-layer battery module. Only the first heat dissipation component is arranged on the layer battery module;

The second heat dissipation component is disposed on the surface of the other single-layer battery module, and the fourth heat dissipation plate 5, the fifth heat dissipation plate 6 and the sixth heat dissipation plate 7 are in the other single layer. On different surfaces of the battery modules, and the height of the fourth heat dissipation plate 5 is basically equal to the height of the single-layer battery module, that is, a single-layer battery module is provided with a set of heat dissipation components, which can also be regarded as the Only the second heat dissipation component is provided on the single-layer battery module.

Specifically, when the battery device 1 is provided with multi-layer battery modules, each layer of the battery module 1 is provided with one of the heat-dissipating components, and the heat-dissipating components communicate with each other through the second connecting pipe 12 .

Wherein, a single-layer module includes a fifth surface, a sixth surface and a seventh surface, the first heat dissipation plate 2 is bonded to the fifth surface of the single-layer module, and the second heat dissipation plate 3 is bonded The sixth surface of the single-layer module is bonded, and the third heat dissipation plate 4 is bonded to the seventh surface of the single-layer module, and the sixth surface and the seventh surface are arranged opposite to each other.

Another single layer module includes an eighth surface, a ninth surface and a tenth surface, the eighth surface and the fifth surface are in the same plane, the ninth surface and the sixth surface are in the same plane , the tenth surface and the seventh surface are in the same plane.

The fourth heat dissipation plate 5 is bonded to the eighth surface, the fifth heat dissipation plate 6 is bonded to the ninth surface, and the sixth heat dissipation plate 7 is bonded to the tenth surface.

Specifically, the length of the first heat dissipation plate 2 is equal to the length of the fifth surface, the length of the second heat dissipation plate 3 is equal to the length of the third heat dissipation plate 4, and the second heat dissipation plate The length of 3 is slightly greater than the length of the sixth surface.

The length of the first heat dissipation plate 2 is equal to the length of the fourth heat dissipation plate 5 , the length of the second heat dissipation plate 3 is equal to the length of the fifth heat dissipation plate 6 , and the length of the third heat dissipation plate 4 is equal. The length is equal to the length of the sixth heat dissipation plate 7 .

Specifically, the fourth heat dissipation plate 5 , the fifth heat dissipation plate 6 and the sixth heat dissipation plate 7 are all bonded to three surfaces of the battery module 1 by means of thermal conductive structural glue.

The number of the third water inlet hole, the fourth water inlet hole and the fifth water inlet hole 51 is two.

The cooling liquid flow process of the double-layer module: the cooling liquid enters the first flow channel in the first cooling plate 2 from the fifth connecting pipe 25, and then the cooling liquid enters the second cooling plate 3, the The third heat dissipation plate 4 and the fourth heat dissipation plate 5; when the cooling liquid enters the second heat dissipation plate 3: the cooling liquid enters the second heat dissipation plate through one of the first water inlet holes The second flow channel in 3, the cooling liquid flows back to the first flow channel in the first heat dissipation plate 2 through the other first water inlet hole;

When the cooling liquid enters the third heat dissipation plate 4: the cooling liquid enters the third flow channel in the third heat dissipation plate 4 through one of the second water inlet holes 21, and the cooling liquid is then passed through The other second water inlet hole 21 flows back into the first flow channel in the first cooling plate 2;

When the cooling liquid enters the fourth heat dissipation plate 5: the cooling liquid enters the fourth flow channel through one of the third water inlet holes, and then enters the fifth flow channel and the sixth flow channel respectively, and flows Return to the fourth flow channel; finally, the cooling liquid flows back into the first flow channel through the third water inlet hole.

In other embodiments, when the battery device 1 is a multi-layer battery module, a plurality of sets of heat dissipation components are arranged on the surface of one single-layer battery module, that is, the height of the heat dissipation plate is much smaller than that of the single-layer battery module. The height of the layer battery module.

Specifically, the third heat dissipation plate 4 and the sixth heat dissipation plate 7 are not directly connected, but communicate with each other through the first heat dissipation plate 2 and the fourth heat dissipation plate 5; and the second heat dissipation plate 3 It is not directly communicated with the fifth heat dissipation plate 6 , but communicates with the first heat dissipation plate 2 and the fourth heat dissipation plate 5 .

Another aspect of the present invention protects a battery pack, comprising a casing 8, a tray 9 and the above-mentioned heat dissipation battery module;

One end of the tray 9 is open, the casing 8 is disposed at the open end of the tray 9 , the casing 8 is connected to the tray 9 to form an accommodation cavity, and the heat dissipation battery module is arranged in the accommodation cavity Inside.

In this embodiment, the battery pack is provided with flow channels on both the tray 9 and the casing 8, which increases the heat dissipation contact area of the battery module and improves the heat dissipation capability of the battery pack; and the The seventh flow channel and the eighth flow channel communicate with each other, which achieves the effect of equalizing the temperature of different surfaces of the battery pack.

Preferably, the tray 9 includes a third connecting pipe 92, a seventh flow channel and a sixth water inlet hole 93, and both the third connecting pipe 92 and the sixth water inlet hole 93 are connected to the seventh flow channel connected;

The housing 8 includes a fourth connection pipe 81 and an eighth flow passage, and the fourth connection pipe 81 communicates with the eighth flow passage;

The fourth connection pipe 81 is disposed in the sixth water inlet hole 93, and the seventh flow channel communicates with the eighth flow channel.

Specifically, the first connecting pipe 11 , the second connecting pipe 12 , the third connecting pipe 92 , the fourth connecting pipe 81 and the fifth connecting pipe 25 are all provided with sealing rings, which are used for It is used to seal the connection between the connecting pipe and the heat dissipation plate to prevent the liquid in the heat dissipation plate from flowing out.

Specifically, the tray 9 is provided with a plurality of partitions 91 , and the partitions 91 divide the tray 9 into a plurality of cavities; one of the battery devices 1 is arranged in one of the cavities.

Specifically, the sixth passage and the seventh passage in the fourth heat dissipation plate 5 are both communicated with the eighth passage, thereby reducing the effect of flow resistance in the flow channel.

In other embodiments, it may be configured that the sixth passage is not communicated with the eighth passage, and the seventh passage is not communicated with the eighth passage.

Specifically, the separator 91 and the tray 9 are integrally formed, and the number of the cavities corresponds to the number of the battery modules.

Specifically, the casing 8 is connected to the tray 9 in a sealed manner, and the third connecting pipe 92 is used to introduce external cooling liquid into the seventh flow channel and lead out the cooling liquid in the seventh flow channel , the seventh flow channel is communicated with the third connection pipe 92 and the sixth water inlet hole 93 respectively; the fourth connection pipe 81 is arranged in the sixth water inlet hole 93, the cooling liquid The sixth water inlet hole 93 can flow into the eighth flow channel in the housing 8, and the cooling liquid can flow back to the seventh flow channel through the eighth flow channel.

Specifically, the seventh flow channel is arranged inside the tray 9 to dissipate heat from the battery module 1 .

Specifically, a thermally conductive insulating material layer is provided between the casing 8 and the battery module 1 , and a thermally conductive insulating material layer is also provided between the tray 9 and the battery module 1 .

In other embodiments, the battery module 1 may also be a battery module that does not include a heat dissipation structure.

In other embodiments, when the arrangement space is limited, the seventh flow channel may not be provided on the tray 9, and only the shell 8 is used for heat dissipation. At this time, the tray 9 only plays the role of structural strength and sealing, and the battery pack 9 The water inlet/outlet can be directly drawn from the housing 8; or only the tray 9 can be used to dissipate heat, and the above various combinations and changes are all covered by the present invention.

In this embodiment, it is not limited to the vertical or tiled arrangement of the cells, and the whole package arrangement structure and heat dissipation requirements of the cells can be deformed and used according to the size of the cells.

Although the present invention has been described in terms of the preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and changes can be made without departing from the scope of the present invention.

In this document, the related terms such as front, rear, upper and lower are defined by the positions of the components in the drawings and the positions between the components, which are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of the locative words should not limit the scope of protection claimed in this application.

The above-described embodiments and features of the embodiments herein can be combined with each other without conflict.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims (10)

1. A heat dissipation battery module is characterized by comprising a battery device (1) and a heat dissipation device;

the heat dissipation device comprises at least one heat dissipation component;

every radiator unit all includes a plurality of first connecting pipes (11) and two at least heating panels, radiator unit's heating panel sets up at least two of battery device are surperficial, the inside runner that all is provided with of heating panel is located pass through between the runner of the heating panel of the different surfaces of battery device first connecting pipe (11) communicate each other.

2. The heat dissipating battery module of claim 1, wherein the heat dissipating device comprises a second connecting tube (12) and at least two heat dissipating components connected to each other through the second connecting tube (12).

3. The heat dissipation battery module as recited in claim 2, wherein the heat dissipation device comprises a first heat dissipation assembly, the first heat dissipation assembly comprises a first heat dissipation plate (2), a second heat dissipation plate (3) and a third heat dissipation plate (4), and the second heat dissipation plate (3) and the third heat dissipation plate (4) are respectively disposed at two sides of the first heat dissipation plate (2);

the first heat dissipation plate (2) comprises a first flow passage;

the second heat dissipation plate (3) comprises a second flow passage;

the third heat dissipation plate (4) comprises a third flow passage;

the second flow channel communicates with the first flow channel via the first connecting pipe (11), and the third flow channel communicates with the first flow channel via the first connecting pipe (11).

4. The heat-dissipating battery module according to claim 3, wherein the first heat-dissipating plate (2) further comprises a first surface (22), a second surface (23), a third surface and a fourth surface (24) which are oppositely disposed;

the first surface (22) is also provided with a fifth connecting pipe (25) for connecting with an external water path;

the second surface (23) is also provided with a first mounting hole (26), and a first connecting piece is arranged in the first mounting hole (26);

the third surface is provided with a first water inlet hole, the fourth surface (24) is provided with a second water inlet hole (21), and the first water inlet hole and the second water inlet hole (21) are communicated with the first flow channel.

5. The heat-dissipating battery module according to claim 4, wherein the first heat-dissipating plate (2), the second heat-dissipating plate (3), and the third heat-dissipating plate (4) are provided on three surfaces of the battery device (1), respectively; the first heat dissipation plate (2), the second heat dissipation plate (3) and the third heat dissipation plate (4) are connected with the battery device (1) through heat conduction structural glue.

6. The heat dissipation battery module as recited in claim 5, wherein the heat dissipation assembly further comprises a second heat dissipation assembly, the second heat dissipation assembly further comprises a fourth heat dissipation plate (5), a fifth heat dissipation plate (6) and a sixth heat dissipation plate (7); the fifth heat dissipation plate (6) and the sixth heat dissipation plate (7) are respectively arranged on two sides of the fourth heat dissipation plate (5);

the fourth heat dissipation plate (5) comprises a fourth flow channel;

the fifth heat dissipation plate (6) comprises a fifth flow channel;

the sixth heat dissipation plate (7) includes a sixth flow passage;

the fifth flow passage is communicated with the fourth flow passage through the first connecting pipe (11), and the sixth flow passage is communicated with the fourth flow passage through the first connecting pipe (11).

7. The heat-dissipating battery module according to claim 6, wherein the fourth heat-dissipating plate (5), the fifth heat-dissipating plate (6), and the sixth heat-dissipating plate (7) are disposed on three surfaces of the battery pack (1), and the fourth heat-dissipating plate (5), the fifth heat-dissipating plate (6), and the sixth heat-dissipating plate (7) are bonded to the battery pack (1) by a heat-conductive adhesive.

8. The heat dissipation battery module as recited in claim 7, wherein the fourth heat dissipation plate (5) further comprises a first connection member, the fourth heat dissipation plate (5) and the first heat dissipation plate (2) are disposed on the same side of the battery device (1), the fourth heat dissipation plate (5) is connected to the first heat dissipation plate (2) through the first connection member, and the first flow passage and the fourth flow passage are communicated through the second connection pipe (12).

9. A battery pack characterized by comprising a case (8), a tray (9) and the heat dissipating battery module according to any one of claims 1 to 8;

tray (9) one end opening, casing (8) set up the open end of tray (9), casing (8) with form after tray (9) are connected and hold the chamber, the battery module that dispels the heat sets up hold the intracavity.

10. A battery pack, as claimed in claim 9, characterized in that said tray (9) comprises a third connecting tube (92), a seventh flow channel and a sixth water inlet hole (93), said third connecting tube (92) and said sixth water inlet hole (93) being in communication with said seventh flow channel;

the shell (8) comprises a fourth connecting pipe (81) and an eighth flow passage, and the fourth connecting pipe (81) is communicated with the eighth flow passage;

the fourth connecting pipe (81) is arranged in the sixth water inlet hole (93), and the seventh flow channel is communicated with the eighth flow channel.

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