CN218448099U - Battery pack and energy storage device - Google Patents

Abstract

The utility model discloses a battery package and energy memory, the battery package includes: the battery module comprises a plurality of single batteries arranged along a first direction; the battery module is accommodated in the box body, and a first through hole is formed in one side of the box body along the second direction; the first direction is vertical to the second direction; the cooling assembly is arranged on one side of the box body along the second direction, penetrates through the first through hole and is in contact with the battery module; the current collecting assembly is arranged between the box body and the battery module and is connected below one side, close to the battery module, of the first through hole in an adjacent mode. Therefore, the cooling assembly is arranged outside the module body and is contacted with the battery module to dissipate heat, so that the cooling efficiency is high; the sealing effect of the battery pack can be improved, and even if external liquid enters the box body, the liquid can be quickly used for the mobile phone, so that the safety and the reliability of the battery pack are improved, and potential safety hazards are reduced.

Description

Battery pack and energy storage device

Technical Field

The utility model belongs to the technical field of the energy memory technique and specifically relates to a battery package and energy memory are related to.

Background

In the correlation technique, in order to improve the cooling efficiency of battery module, can set up the liquid cooling board in battery module inside, realize the liquid cooling to battery module through the coolant in the liquid cooling board. However, once the liquid cooling plate leaks, the cooling medium in the liquid cooling plate can directly act on the single batteries inside the battery module, which can cause the failure, short circuit and the like of the single battery box, and cause danger, so that a great potential safety hazard exists.

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, which can reduce the potential safety hazard on the premise of having higher cooling efficiency.

The utility model further provides an adopt energy memory of above-mentioned battery package.

A battery pack according to an embodiment of the first aspect of the present application includes: the battery module comprises a plurality of single batteries arranged along a first direction; the battery module is accommodated in the box body, and a first through hole is formed in one side of the box body along the second direction; the first direction is perpendicular to the second direction; the cooling assembly is arranged on one side of the box body along the second direction, penetrates through the first through hole and is in contact with the battery module; the current collecting assembly is arranged between the box body and the battery module and is adjacent to the lower portion of one side, close to the battery module, of the first through hole.

According to the cooling assembly provided by the embodiment of the utility model, on one hand, the cooling assembly is arranged outside the module body and is contacted with the battery module to dissipate heat, so that the cooling assembly has higher cooling efficiency; on the other hand, through setting up the mass flow subassembly, can improve the sealed effect of battery package, even if external liquid enters into in the box, also can realize the quick cell-phone of liquid to improve the security and the reliability of battery package, reduce the potential safety hazard.

According to some embodiments of the application, the cooling assembly comprises: the liquid cooling plate is arranged on one side, away from the battery module, of the box body in the second direction; the heat conducting component penetrates through the first through hole along the second direction, one end of the heat conducting component is in contact with the battery module, and the other end of the heat conducting component extends into the liquid cooling plate.

Further, the liquid cooling plate includes: a first plate and a second plate, the first plate extending along the first direction; the second plate extends along the first direction, the first plate is attached to the second plate, the non-attached portion of the first plate and the non-attached portion of the second plate form the cooling flow channel, and the other end of the heat conducting component extends into the cooling flow channel.

Further, one of the first plate and the second plate, which is close to the battery module, is provided with a second through hole corresponding to the first through hole, and the heat conduction member penetrates through the second through hole and extends into the cooling flow channel.

In some embodiments, the battery pack further comprises: the temperature equalizing plate is arranged between the battery module and the cooling assembly, and the one end of the heat conducting component is in contact with the temperature equalizing plate.

Further, the heat conducting member is a heat pipe.

Further, the battery pack further includes: the heat conducting pad is arranged between the temperature equalizing plate and the battery module.

According to some embodiments of the present application, the current collecting assembly comprises: the flow guide part extends along the first direction, and the height of the flow guide part from the horizontal plane is gradually reduced from the middle to the two ends; the supporting part is followed the first direction extends, the supporting part connect in the water conservancy diversion portion is close to one side of battery module, just the water conservancy diversion portion the box and the guiding gutter is injectd to the supporting part.

Further, the width of the flow guide part along the second direction is gradually reduced from the middle to two ends.

Furthermore, liquid discharge ports are formed in two sides of the box body along the first direction and communicated with the flow guide grooves.

An energy storage device according to an embodiment of the second aspect of the present application includes: the battery pack described in the above embodiments.

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 view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic view of the module body, the cooling assembly, the vapor chamber, and the thermal pad according to an embodiment of the present invention;

fig. 3 is a schematic view of a first plate according to an embodiment of the invention;

fig. 4 is a schematic view of a second plate according to an embodiment of the invention;

fig. 5 is a schematic view of the assembly of the collecting plate and the flow guide plate according to the embodiment of the present invention.

Reference numerals:

the battery pack 100 is provided with a battery pack,

a battery module 10, a battery cell 11, a heat insulating layer 12,

a case 20, a first through hole 21, a liquid discharge port 22,

a cooling unit 30, a liquid cooling plate 31, a first plate 311, a second plate 312, a second through hole 313, a heat conductive member 32,

a current collecting block 40, a flow guide portion 41, a support portion 42,

a vapor chamber 50 and a thermal pad 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

A battery pack 100 and an energy storage device according to an embodiment of the present invention are described below with reference to fig. 1 to 5.

As shown in fig. 1 and 2, a battery pack 100 according to an embodiment of the present invention includes: battery module 10, tank 20, cooling module 30, and current collecting module 40.

The battery module 10 comprises a plurality of single batteries 11 arranged along a first direction, the battery module 10 is accommodated in the box body 20, and one side of the box body 20 along a second direction is provided with a first through hole 21; the first direction is vertical to the second direction; the cooling assembly 30 is disposed at one side of the case 20 along the second direction, and the cooling assembly 30 is inserted into the first through hole 21 to contact the battery module 10; the current collecting block 40 is disposed between the tank 20 and the battery modules 10, and the current collecting block 40 is adjacent to and below one side of the first through hole 21 adjacent to the battery modules 10.

Specifically, the battery module 10 may include a plurality of rows and a plurality of columns of the single batteries 11 arranged in an array (the first direction is in a row, the second direction is in a row), or may be arranged in sequence only along the first direction, one or more battery modules 10 may be included in each battery pack 100, and the case 20 is disposed outside the one or more battery modules 10 to support and protect the battery modules 10.

Furthermore, the battery module 10 can generate certain heat in the charging and discharging process, the cooling assembly 30 can be arranged outside the battery pack, one end of the cooling assembly 30 penetrates through the first through hole 21 of the box body 20 to be in contact with the battery module 10 for heat exchange, forced heat dissipation of the battery module 10 is achieved, the current collecting assembly 40 is arranged below one side, close to the battery module 10, of the first through hole 21, after liquid enters the box body 20, the liquid flows along the inner wall of the box body 20 under the action of gravity, the current collecting assembly 40 below the first through hole 21 can be collected, the situation that external liquid enters the box body 20 through the gap between the first through hole 21 and the cooling assembly 30 can be avoided, the external liquid further immerses the battery module 10, and on the premise that stable cooling is achieved, the use safety of the battery pack 100 can be improved.

It should be noted that the external liquid may be liquid such as water in the external environment in the usage environment of the battery pack 100, and when the liquid cooling solution is adopted, the leaked cooling medium in the cooling module 30 may also enter the case 20 through the gap between the first through hole 21 and the cooling module 30.

According to the cooling assembly 30 of the embodiment of the present invention, on one hand, the cooling assembly 30 is disposed outside the battery module 10, and the cooling assembly 30 is in contact with the battery module 10 to dissipate heat, so that the cooling assembly 30 has high cooling efficiency; on the other hand, by arranging the current collecting assembly 40, the sealing effect of the battery pack 100 can be improved, and even if external liquid enters the box body 20, a liquid rapid mobile phone can be realized, so that the safety and reliability of the battery pack 100 are improved, and potential safety hazards are reduced.

As shown in fig. 2, the cooling module 30 includes: liquid cold plate 31 and heat-conducting member 32, liquid cold plate 31 set up in box 20 one side that deviates from battery module 10 in the second direction, and heat-conducting member 32 passes first through-hole 21 along the second direction, and the one end and the battery module 10 contact of heat-conducting member 32, and the other end of heat-conducting member 32 stretches into liquid cold plate 31.

One end of the heat conducting component 32 contacts with the battery module 10 to lead out the heat generated by the battery module 10, and the other end of the heat conducting component 32 extends into the liquid cooling plate 31 to contact with the cooling medium in the liquid cooling plate 31 for heat exchange, so that the heat generated by the battery module 10 can be quickly cooled by the cooling medium, the battery module 10 is ensured to be at a proper working temperature, the working temperature of the battery module 10 is avoided from being too high, and the battery module 10 is effectively cooled.

Meanwhile, the heat conducting component 32 extends into the space between one end of the cooling flow channel and the liquid cooling plate 31, gaps can appear between the first through hole 21 and the heat conducting component 32 in the working process of the battery module 10, so that the cooling medium overflows, or the external liquid enters the box body 20, the overflowing cooling medium and/or the overflowing external liquid can move into the current collecting assembly 40 under the action of gravity, the overflowing cooling medium and/or the overflowing external liquid are prevented from acting on the battery module 10, the safety and the reliability are improved, and the potential safety hazard is reduced.

It should be pointed out that, liquid cooling plate 31 sets up outside battery module 10, and liquid cooling plate 31 and the spaced apart setting of battery cell 11 in the battery module 10 can avoid liquid cooling plate 31 to appear leaking tentatively, and coolant acts on battery cell 11 to further collect the coolant that probably appears leaking through mass flow subassembly 40, further improve the separation effect, ensure not because of coolant leaks, lead to battery cell inefficacy, short circuit, in order to reduce the potential safety hazard.

As shown in fig. 3 and 4, according to some embodiments of the present invention, the liquid cooling plate 31 includes: first board 311 and second board 312, first board 311 and second board 312 all extend along first direction, first board 311 and the laminating setting of second board 312, first board 311 and second board 312 form the cooling runner for the laminating part, the other end of heat-conducting member 32 stretches into in the cooling runner, and one in first board 311 and the second board 312 of being close to in battery module 10 is equipped with the second through-hole 313 that corresponds with first through-hole 21, heat-conducting member 32 passes second through-hole 313 and stretches into the cooling runner.

The first plate 311 may be provided with a recess far from the second plate 312 and/or the second plate 312 may be provided with a recess far from the first plate 311, the recess is formed in a second direction to define a cooling channel, a plate body adjacent to the battery module 10 may be defined as the first plate 311, a body far from the battery module 10 is defined as the second plate 312, a plurality of second through holes 313 are formed in a region of the first plate 311 corresponding to the cooling channel, the second through holes 313 correspond to the first through holes 21, the heat-conducting member 32 may pass through the second through holes 313 to extend into the cooling channel, a sealing structure may be provided on a peripheral side of the second through holes 313 to seal a gap between the second through holes 313 and the heat-conducting member 32, and a liquid inlet and a liquid outlet are provided at an end of the cooling channel.

From this, on the one hand, pour into cooling medium into through the inlet, cooling medium flows out through the outlet to realize the effective cooling to battery module 10, on the other hand wears to establish first board 311 in order to carry out the heat transfer part 32 that contacts the heat transfer with cooling medium, can effectively improve cooling assembly 30's cooling efficiency.

As shown in fig. 2, in some embodiments, a temperature-uniforming plate 50 is further disposed between the battery module 10 and the cooling assembly 30, one end of the heat-conducting member 32 is in contact with the temperature-uniforming plate 50, and a heat-conducting pad 60 is disposed between the temperature-uniforming plate 50 and the battery module 10.

From this, through heat transfer to temperature-uniforming plate 50 that thermal pad 60 produced battery module 10, temperature-uniforming plate 50 is used for the heat homogenization with the big face production of battery module 10, and derive the heat through a plurality of heat pipes, with the setting through thermal pad 60, effectively derive battery module 10 heat, improve cooling efficiency, setting through temperature-uniforming plate 50, avoid appearing the temperature concentration phenomenon, improve the temperature homogeneity, with the operational environment of effectively improving battery module 10, avoid the heat to concentrate and lead to battery module 10 thermal failure, with improvement job stabilization nature.

Exemplarily, the heat conducting member 32 is a heat pipe, and the heat pipe may be made of a metal material with good heat conducting property such as a copper pipe or an aluminum pipe, or a phase change pipe with a phase change material disposed therein, and the heat pipe is matched with the liquid cooling plate 31 to cool the battery module 10, so that the cooling efficiency of the battery module 10 can be further improved, the use safety of the battery pack 100 can be improved, and the probability of thermal runaway of the battery pack 100 can be reduced.

As shown in fig. 1, according to some embodiments of the present invention, the box body 20 may include a top plate, a bottom plate, end plates located at two sides of the first direction, and side plates located at two sides of the second direction, wherein the side plates are formed with first through holes 21, and the first plate 311 of the cooling assembly 30 is attached to the side plates, and the second through holes 313 on the first plate 311 and the first through holes 21 on the side plates are arranged in a one-to-one correspondence.

As shown in fig. 1, the tank 20 is provided with a liquid discharge port 22 on both sides in the first direction, and the liquid discharge port 22 communicates with the manifold assembly 40.

In other words, a liquid discharge port 22 may be provided on at least one of the two end plates on both sides in the first direction, and the collecting tank of the collecting block 40 communicates with the liquid discharge port 22.

That is to say, can set up drain 22 on two end plates or only on an end plate, and the collection groove communicates with drain 22, when liquid cooling plate 31 appeared leaking, the coolant that enters into in the collection groove can be discharged through drain 22 fast, further improves the security performance, avoids the liquid cooling plate 31 that separates with battery module 10 to appear leaking the back, leads to the single cell 11 in the battery module 10 to appear the short circuit or the trouble, improves security and reliability.

As shown in fig. 5, further, the current collecting module 40 includes: the flow guide part 41 extends along a first direction, and the height of the flow guide part 41 from the horizontal plane is gradually reduced from the middle to two ends; the support portion 42 extends in the first direction, the support portion 42 is connected to one side of the flow guide portion 41 adjacent to the battery module 10, and the flow guide portion 41, the case 20, and the support portion 42 define a flow guide groove.

Wherein, supporting part 42 sets up with first board 311 relatively, and the interval between supporting part 42 and the first board 311 forms the cell body, and water conservancy diversion portion 41 sets up in the cell body and is located the bottom plate top of box 20, in order to inject the collecting tank jointly, and then when being located the leakage that a plurality of first through-holes 21 of collecting tank top produced, coolant can be under the action of gravity, in flowing down and entering collecting tank along the wall of first board 311, effectively collect coolant, the collecting effect is improved, and the security is improved.

As shown in fig. 2 and 5, the height of the diversion portion 41 from the horizontal plane is further gradually reduced from the middle to both ends, that is, in the embodiment where the end plates at both ends are provided with the liquid discharge ports 22, the diversion plate extends downward from the middle toward both ends in an inclined manner so as to divert the cooling medium into the two liquid discharge ports 22 at both ends, so that the diversion effect is improved by the arrangement of the diversion plate, the generation of liquid accumulation in the liquid collection groove is avoided, and the cooling medium can be discharged quickly.

Of course, the structure of the flow guiding portion 41 of the embodiment of the present application is not limited to this, and in the embodiment where the liquid discharge port 22 is provided on the end plate at only one end, the slope of the flow guiding portion 41 extends from one end of the liquid cooling plate 31 in the first direction toward the other end to guide the cooling medium to the liquid discharge port 22, that is, the height from the horizontal plane gradually decreases from one end to the other end.

Further, the width of the flow guide portion 41 in the second direction may be gradually reduced from the middle to the two ends, so that the area where the two ends of the flow guide groove are communicated with the liquid discharge port 22 is formed into a closed structure, thereby further improving the flow guide effect and increasing the liquid discharge speed.

As shown in fig. 2, according to some embodiments of the present invention, the battery module 10 includes: at least one row of single batteries 11, and a heat insulation layer 12 is arranged between two adjacent rows of single batteries 11.

Particularly, the thermal insulation layer 12 can be constructed as a graphene layer, and by arranging the thermal insulation layer 12 between two adjacent columns of the single batteries 11, the local temperature inside the single batteries 11 can be prevented from being too high, the temperature concentration of the single batteries 11 can be prevented, and the reliability and the safety of the battery module 10 can be improved.

According to the utility model discloses energy memory of second aspect embodiment includes: the technical effect of the battery pack 100 in the above embodiment is the same as that of the battery pack 100, and is not repeated 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", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship 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 referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact via another feature therebetween.

In the description of the invention, "on", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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 (11)

1. A battery pack, comprising:

the battery module comprises a plurality of single batteries arranged along a first direction;

the battery module is accommodated in the box body, and a first through hole is formed in one side of the box body along the second direction; the first direction is perpendicular to the second direction;

the cooling assembly is arranged on one side of the battery module along the second direction, penetrates through the first through hole and is in contact with the battery module;

and the current collecting assembly is arranged between the box body and the battery module and is adjacent to the lower part of one side, close to the battery module, of the first through hole.

2. The battery pack of claim 1, wherein the cooling assembly comprises:

the liquid cooling plate is arranged on one side, away from the battery module, of the box body in the second direction;

and the heat conducting component penetrates through the first through hole along the second direction, one end of the heat conducting component is in contact with the battery module, and the other end of the heat conducting component extends into the liquid cooling plate.

3. The battery pack of claim 2, wherein the liquid-cooled plate comprises:

a first plate extending in the first direction;

the second plate extends along the first direction, the first plate is attached to the second plate, the non-attached portion of the first plate and the non-attached portion of the second plate form the cooling flow channel, and the other end of the heat conducting part extends into the cooling flow channel.

4. The battery pack according to claim 3, wherein one of the first plate and the second plate, which is adjacent to the battery module, is provided with a second through-hole corresponding to the first through-hole, and the heat conductive member protrudes into the cooling flow channel through the second through-hole.

5. The battery pack of claim 1, further comprising: the temperature equalizing plate is arranged between the battery module and the cooling assembly, and the one end of the heat conducting component is in contact with the temperature equalizing plate.

6. The battery pack of claim 5, wherein the thermally conductive member is a heat pipe.

7. The battery pack according to claim 5, further comprising: the heat conducting pad is arranged between the temperature equalizing plate and the battery module.

8. The battery pack of claim 1, wherein the current collecting assembly comprises:

the flow guide part extends along the first direction, and the height of the flow guide part from the horizontal plane is gradually reduced from the middle to the two ends;

the supporting part is extended along the first direction, the supporting part is connected to one side of the battery module, close to the flow guide part, and the flow guide groove is limited by the flow guide part, the box body and the supporting part.

9. The battery pack according to claim 8, wherein the width of the flow guide part in the second direction is gradually reduced from the middle to both ends.

10. The battery pack according to claim 9, wherein liquid discharge ports are provided on both sides of the case in the first direction, the liquid discharge ports communicating with the flow guide grooves.

11. An energy storage device, comprising: the battery pack of any one of claims 1-10.

Images