CN217848079U - Blade electricity core module, battery package and power device - Google Patents

Abstract

The utility model discloses a blade electric core module, a battery pack with the same and a power device, wherein the blade electric core module comprises a blade electric core, the blade electric core is stacked along a first direction, and a first surface and a second surface are arranged at two ends of the blade electric core along the first direction; a cooling unit disposed on the first surface and/or the second surface. From this, set up the cooling unit in the big face of blade electricity core, increase heat transfer area, high efficiency reduces electric core surface temperature, when electric core takes place the thermal runaway, can effectively prevent the emergence that the heat stretchs, and then the life of extension electric core, improves the security of battery package.

Description

Blade electricity core module, battery package and power device

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a blade electricity core module, battery package and power device are related to.

Background

The cooling scheme of the existing blade battery is that a cold plate is vertically placed with an electric core, namely, the cold plate is arranged above or below the electric core, the direct heat exchange surface of cooling liquid is arranged on the bottom surface and the top surface of the electric core, the heat exchange on the large surface of the electric core is carried out through a heat insulation material between the electric core and the electric core, and the heat exchange area of the heat exchange mode is small and the heat exchange efficiency is low. Moreover, the arrangement mode still needs to arrange a heat insulation material between the battery cells to prevent the generation of heat spreading.

Thus, there is still a need for further improvements in current blade cell modules.

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 module, a battery pack and a power device. This battery module sets up the cooling unit on the big face of electric core, can show increase heat transfer area, when electric core takes place the thermal runaway, can effectively prevent the emergence that the heat stretchs, and then the life of extension electric core, improves the security of battery package.

In an aspect of the present invention, a blade electrical core module is provided, which includes a blade electrical core, the blade electrical core is stacked along a first direction, and a first surface and a second surface are disposed at two ends of the blade electrical core along the first direction; a cooling unit disposed on the first surface and/or the second surface. From this, set up the cooling unit at the big face of blade electricity core, increase heat transfer area, high efficiency reduces electric core surface temperature, when electric core takes place the thermal runaway, can effectively prevent the emergence that heat stretchs, and then the life of extension electric core, improves the security of battery package.

The blade electricity core module that this application provided further includes following technical characteristic:

according to some embodiments of the present invention, the blade battery cell module further includes a thermal pad, the thermal pad is disposed on the first surface and/or the second surface, the cooling unit is disposed on the thermal pad.

According to some embodiments of the utility model, the cooling unit includes a plurality of cooling pipe ways, the cooling pipe way sets up the heat conduction pad is kept away from the surface of blade electricity core, the cooling pipe way includes first mouth of pipe and second mouth of pipe.

According to some embodiments of the invention, the cooling unit further comprises: the bottom plate is arranged below the blade battery cell and extends along the first direction, a first channel and a second channel are arranged in the bottom plate, the first channel is communicated with the first pipe orifice, and the second channel is communicated with the second pipe orifice; one end of the bottom plate along the first direction is provided with an inlet and an outlet, the inlet is arranged on the first channel, and the outlet is arranged on the second channel; a plurality of first openings are formed in the first channel along the first direction, and the first openings are connected with the first pipe orifices and correspond to the first pipe orifices one by one; and a plurality of second openings are arranged on the second channel along the first direction, and the second openings are connected with the second pipe orifices and correspond to the second pipe orifices one by one.

According to some embodiments of the present invention, the cooling pipeline includes a first portion and a second portion, the first portion and the second portion are disposed at two sides of the bottom plate, wherein the first portion includes a first flow channel and a second flow channel, the first flow channel and the second flow channel are disposed side by side along a second direction, one end of the first flow channel is connected to the first opening, and the other end of the first flow channel is connected to one end of the second flow channel; the second part comprises a third runner and a fourth runner, the third runner and the fourth runner are arranged in parallel along the second direction, one end of the third runner is connected with the other end of the second runner, the other end of the third runner is connected with one end of the fourth runner, and the other end of the fourth runner is connected with the second opening.

According to some embodiments of the utility model, blade electricity core module further includes liquid inlet pipe way and drain pipe, liquid inlet pipe way with the entry links to each other, the drain pipe way with the export links to each other.

According to some embodiments of the utility model, adjacent two the distance between the cooling pipeline is 24mm ~ 27mm.

According to some embodiments of the present invention, the total length of the second flow channel and the third flow channel is less than the length of the blade electric core.

In another aspect of the present invention, a battery pack is provided, which includes the aforementioned blade electrical core module. Therefore, the battery pack has all the characteristics and advantages of the blade battery cell module, and the description is omitted here. Overall, there is at least the advantage of greater safety.

In another aspect of the present invention, a power device is provided, which includes the aforementioned battery pack. Therefore, the battery pack has all the characteristics and advantages of the battery pack, which are not described in detail herein, and generally has at least the advantage of higher safety.

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 structural diagram of a blade battery cell module according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a large surface of a blade electric core according to an embodiment of the present invention;

fig. 3 is a side view of a base plate of an embodiment of the present invention;

fig. 4 is a top view of a base plate according to an embodiment of the present invention.

Reference numerals:

1000: a blade battery cell module; 1100: a blade cell; 1110: a first surface; 1200: a cooling unit; 1300: a thermally conductive pad; 1210: a cooling pipeline; 10: a first nozzle; 20: a second orifice; 1220: a base plate; 1221: a first channel; 30: a first opening; 1222: a second channel; 40: a second opening; 50: an inlet; 60: an outlet; 100: a first part; 200: a second section; 1211: a first flow passage; 1212: a second flow passage; 1213: a third flow passage; 1214: a fourth flow path; 1400: a liquid inlet pipeline; 1500: and a liquid outlet pipeline.

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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A blade cell module according to an embodiment of the invention is described below with reference to fig. 1-4.

In an aspect of the present invention, referring to fig. 1, a blade battery cell module 1000 is provided, which includes a blade battery cell 1100 and a cooling unit 1200, the blade battery cell 1100 is stacked along a first direction, the blade battery cell 1100 is provided with a first surface 1110 and a second surface (not shown in the figure) along both ends of the first direction, that is, the battery cell is large, and the cooling unit 1200 is disposed on the first surface 1110 and/or the second surface. Specifically, the blade cells 1100 are stacked in the first direction, the cell large faces of two adjacent blade cells 1100 are close to each other, and when the cooling unit 1200 is disposed only on the first surface 1110 of the blade cell 1100, that is, when the cooling unit 1200 is disposed only on one large face of the cell, after the blade cells 1100 are stacked, one cooling unit 1200 is disposed between the two adjacent large faces of the blade cell 1100; when the cooling units 1200 are disposed on both the first surface 1110 and the second surface of the blade cell 1100, i.e., the cooling units 1200 are disposed on both the large faces of the blade cell 1100, two cooling units 1200 are disposed between the large faces of two adjacent blade cells 1100 after the blade cells 1100 are stacked. From this, in the electric core working process, can carry out the heat absorption heat transfer to electric core surface at electric core face, increase heat transfer area, quick, high-efficient electric core surface temperature that reduces need not additionally to set up the insulating layer between electric core and electric core, when electric core takes place the thermal runaway, open cooling unit 1200 and can take away the heat on electric core surface fast, reduce blade electricity core 1100 temperature, can effectively prevent the emergence that heat stretchs, and then extension blade electricity core 1100's life, improve the security of battery package.

According to some embodiments of the present invention, referring to fig. 1, the blade electrical core module 1000 may further include a thermal pad 1300, the thermal pad 1300 is disposed on the first surface 1110 and/or the second surface, and the cooling unit 1200 is disposed on the surface of the thermal pad 1300 away from the blade electrical core 1100. That is, the thermal pad 1300 may be provided on only one large surface of the blade electric core 1100, or the thermal pads 1300 may be provided on both large surfaces of the blade electric core 1100. Specifically, the thermal pad 1300 is disposed on the large surface of the battery cell, and then the cooling unit 1200 is disposed on the side of the thermal pad 1300 away from the battery cell. This enables rapid heat exchange between the cooling unit 1200 and the large cell surface. In addition, because cooling unit 1200 is by metal material constitution more, thermal pad 1300 is by rubber class material constitution more, and the existence of thermal pad 1300 can avoid cooling unit 1200 direct contact electric core surface to cause the damage to the electric core surface, and in addition, thermal pad 1300 can also play the function of buffering, when electric core takes place the thermal energy, prevents to take place the electric core damage other electric cores of deformation. It should be noted that the fixing manner among the cooling unit 1200, the thermal pad 1300 and the large surface of the cell is not particularly limited, for example, the thermal pad 1300 has silicone oil on both sides, one side of the silicone oil is used to fix the thermal pad 1300 on the large surface of the blade cell 1100, and the other side of the silicone oil is used to fix the cooling unit 1200 on the thermal pad 1300. It should be noted that, a person skilled in the art may select a specific material of the thermal pad 1300 according to actual needs, as long as the functions of heat conduction and buffering are achieved, and details are not described herein.

According to some embodiments of the present invention, referring to fig. 1 and 2, the cooling unit 1200 comprises a plurality of cooling pipes 1210, the cooling pipes 1210 being disposed on the surface of the thermal pad 1300 remote from the blade electric core 1100, the cooling pipes 1210 comprising the first pipe orifice 10 and the second pipe orifice 20. Therefore, the cooling liquid can flow into the cooling pipeline 1210 through the first pipe orifice 10 to exchange heat with the battery cell, and the cooling liquid absorbing heat can flow out of the cooling pipeline 1210 through the second pipe orifice 20 to take away the heat.

According to some embodiments of the present invention, referring to fig. 1, 3 and 4, the cooling unit 1200 may further include: a base plate 1220 disposed below the blade cell 1100, the base plate 1220 extending in a first direction, the base plate 1220 being internally provided with a first channel 1221 and a second channel 1222, in particular, the base plate 1220 may be spaced apart by a straight rib in the middle of the base plate 1220 so as to form the first channel 1221 and the second channel 1222. First passageway 1221 and first mouth of pipe 10 communicate, second passageway 1222 and second mouth of pipe 20 communicate, bottom plate 1220 is provided with entry 50 and export 60 along the one end of first direction, entry 50 is established on first passageway 1221, export 60 is established on second passageway 1222, be equipped with a plurality of first openings 30 along the first direction on the first passageway 1221, first opening 30 links to each other and the one-to-one with first mouth of pipe 10, be equipped with a plurality of second openings 40 along the first direction on second passageway 1222, second opening 40 links to each other and the one-to-one with second mouth of pipe 20. Specifically, when the blade electric core 1100 needs to be cooled, the cooling liquid flows into the first passage 1221 through the inlet 50, then flows into the cooling pipeline 1210 through the first opening 30 on the first passage 1221 and the first nozzle 10 on the cooling pipeline 1210, flows along the cooling pipeline 1210 to absorb heat from the large surface of the electric core, and flows into the second passage 1222 through the second nozzle 20 on the cooling pipeline 1210 and the second opening 40 on the second passage 1222, and then flows out through the outlet 60 to take away the heat. Thus, the heat exchange function is completed.

According to some embodiments of the present invention, referring to fig. 2, in order to further improve the heat exchange effect, the cooling pipeline 1210 may include a first portion 100 and a second portion 200, the first portion 100 and the second portion 200 being disposed at both sides of the bottom plate 1220, wherein the first portion 100 includes a first flow passage 1211 and a second flow passage 1212, the first flow passage 1211 and the second flow passage 1212 are disposed side by side along the second direction, one end of the first flow passage 1211 is connected to the first opening 30, and the other end of the first flow passage 1211 is connected to one end of the second flow passage 1212; the second portion 200 includes a third flow channel 1213 and a fourth flow channel 1214, the third flow channel 1213 and the fourth flow channel 1214 are juxtaposed in the second direction, one end of the third flow channel 1213 is connected to the other end of the second flow channel 1212, the other end of the third flow channel 1213 is connected to one end of the fourth flow channel 1214, and the other end of the fourth flow channel 1214 is connected to the second opening 40. Specifically, divide into two parts with cooling pipeline 1210, the cooling pipeline 1210 of two parts sets up respectively in the both sides of bottom plate 1220, because coolant liquid entry 50 is on bottom plate 1220, the in-process that the coolant liquid flowed into cooling pipeline 1210 by entry 50 and returned export 60 along cooling pipeline 1210, be equivalent to having set up two opposite flow channels of flow direction on the surface of electric core, because the temperature of cooling liquid in cooling pipeline 1210 risees along the direction of flow gradually, the setting of the opposite flow channel of flow direction can reduce the difference in temperature of blade electricity core 1100 length direction, the heat transfer effect that makes the different positions of electricity core surface more even, promptly the temperature on electricity core surface is more even. Preferably, the first and second portions 100 and 200 are symmetrically arranged with respect to the base plate 1220.

According to some embodiments of the present invention, referring to fig. 1, the blade electrical core module 1000 may further include a liquid inlet pipe 1400 and a liquid outlet pipe 1500, the liquid inlet pipe 1400 is connected to the inlet 50, so as to send the cooling liquid into the first flow channel 1211 through the liquid inlet pipe 1400; outlet pipe 1500 is connected to outlet 60 to discharge the heat exchanged coolant to outlet pipe 1500.

According to some embodiments of the present invention, the distance between two adjacent cooling pipelines 1210 is not particularly limited, and those skilled in the art can set the distance according to the thickness of the blade electric core 1100, and specifically, the distance between two adjacent cooling pipelines 1210 can be 24mm to 27mm.

According to some embodiments of the present invention, to further reduce the weight of the cooling unit 1200, the total length of the second flow channel 1212 and the third flow channel 1213 may be less than the length of the blade cell 1100. That is to say, the cooling liquid can still perform a heat exchange function on the surface of the battery cell close to the cooling pipeline 1210, so that the lengths of the second flow channel 1212 and the third flow channel 1213 are smaller than the length of the battery cell, which not only can meet the requirement of the heat exchange function, but also can reduce the weight of the cooling pipeline 1210, and is convenient for assembly.

In another aspect of the present invention, a battery pack is provided, which includes the aforementioned electrical core module 1000. Thus, the battery pack has all the features and advantages of the blade battery cell module 1000, which are not described herein again. Generally speaking, the method at least has the advantages of faster heat exchange on the surface of the battery cell and higher safety.

In another aspect of the present invention, a power device is provided, which includes the aforementioned battery pack. Therefore, the battery pack has all the characteristics and advantages of the battery pack, which are not described in detail herein, and generally has at least the advantage of higher safety.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 (10)

1. The utility model provides a blade electricity core module which characterized in that includes:

the battery comprises blade cells, a battery body and a battery cover, wherein the blade cells are stacked along a first direction, and a first surface and a second surface are arranged at two ends of each blade cell along the first direction;

a cooling unit disposed on the first surface and/or the second surface.

2. The blade cell module of claim 1, further comprising a thermal pad disposed on the first surface and/or the second surface, wherein the cooling unit is disposed on a surface of the thermal pad away from the blade cell.

3. The blade cell module of claim 2, wherein the cooling unit comprises a plurality of cooling pipelines, the cooling pipelines are disposed on a surface of the thermal pad away from the blade cell, and the cooling pipelines comprise a first nozzle and a second nozzle.

4. The blade cell module of claim 3, wherein the cooling unit further comprises:

the bottom plate is arranged below the blade battery cell and extends along the first direction, a first channel and a second channel are arranged in the bottom plate, the first channel is communicated with the first pipe orifice, and the second channel is communicated with the second pipe orifice;

one end of the bottom plate along the first direction is provided with an inlet and an outlet, the inlet is arranged on the first channel, and the outlet is arranged on the second channel;

a plurality of first openings are formed in the first channel along the first direction, and the first openings are connected with the first pipe orifices and correspond to the first pipe orifices one by one;

and a plurality of second openings are arranged on the second channel along the first direction, and the second openings are connected with the second pipe orifices and correspond to the second pipe orifices one by one.

5. The blade cell module of claim 4, wherein the cooling conduit comprises a first portion and a second portion disposed on either side of the base plate, wherein,

the first part comprises a first flow passage and a second flow passage, the first flow passage and the second flow passage are arranged in parallel along a second direction, one end of the first flow passage is connected with the first opening, and the other end of the first flow passage is connected with one end of the second flow passage;

the second part comprises a third runner and a fourth runner, the third runner and the fourth runner are arranged in parallel along the second direction, one end of the third runner is connected with the other end of the second runner, the other end of the third runner is connected with one end of the fourth runner, and the other end of the fourth runner is connected with the second opening.

6. The blade cell module of claim 5, further comprising a liquid inlet conduit and a liquid outlet conduit, wherein the liquid inlet conduit is connected to the inlet and the liquid outlet conduit is connected to the outlet.

7. The blade cell module set according to claim 6, wherein the distance between two adjacent cooling pipelines is 24mm to 27mm.

8. The blade cell module of claim 7, wherein a total length of the second flow channel and the third flow channel is less than a length of the blade cell.

9. A battery pack comprising the blade cell module of any one of claims 1-8.

10. A power plant comprising the battery pack of claim 9.

Images