CN218039443U - Battery shell and battery module - Google Patents

Abstract

The present disclosure provides a battery case and a battery module, wherein the battery case includes a flow channel plate, a plurality of liquid cooling plates, a fixing plate, and a plurality of partition plates; the runner plate is provided with a first runner and a second runner which penetrate along the length direction of the runner plate, the first runner is provided with a plurality of first openings which are arranged side by side along the length direction of the runner plate, the second runner is provided with a plurality of second openings which are arranged side by side along the length direction of the runner plate, and the first openings and the second openings are arranged in a one-to-one correspondence manner; the plurality of liquid cooling plates are arranged side by side along the length direction of the runner plate, each liquid cooling plate is provided with a third runner, and a liquid inlet and a liquid outlet of each third runner are respectively communicated with a group of correspondingly arranged first openings and second openings; the plurality of partition plates are arranged side by side along the length direction of the flow passage plate and are fixed on the fixed plate, and the partition plates and the liquid cooling plate are arranged in one-to-one correspondence; each partition plate comprises a containing part penetrating along the length direction of the partition plate, and each liquid cooling plate can be inserted into the containing part of the corresponding partition plate.

Description

Battery shell and battery module

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to battery shell and battery module.

Background

With the vigorous development of new energy industries, battery systems are concerned as core components of the new energy industries, and the performance requirements of people on the battery systems are higher and higher. However, the battery system generates a large amount of heat during charge and discharge, and excessively high temperature affects battery performance. Therefore, the design of the heat dissipation system is critical to the battery system.

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, provide a battery case and battery module.

In a first aspect, embodiments of the present disclosure provide a battery case including a flow channel plate, a plurality of liquid cooling plates, a fixing plate, and a plurality of partition plates; wherein,

the runner plate is provided with a first runner and a second runner which penetrate through the runner plate along the length direction of the runner plate, the first runner is provided with a plurality of first openings which are arranged side by side along the length direction of the runner plate, the second runner is provided with a plurality of second openings which are arranged side by side along the length direction of the runner plate, and the first openings and the second openings are arranged in a one-to-one correspondence manner;

the liquid cooling plates are arranged side by side along the length direction of the runner plate, each liquid cooling plate is provided with a third runner, and a liquid inlet and a liquid outlet of each third runner are respectively communicated with the first opening and the second opening which are correspondingly arranged in one group;

the plurality of partition plates are arranged side by side along the length direction of the runner plate and are fixed on the fixed plate, and the partition plates and the liquid cooling plates are arranged in one-to-one correspondence; each partition plate comprises a containing part penetrating along the length direction of the partition plate, and each liquid cooling plate can be inserted into the containing part of the corresponding partition plate.

In some examples, the battery housing further comprises a liquid inlet assembly and a liquid outlet assembly; the first flow channel and the second flow channel respectively comprise a first port and a second port which are oppositely arranged, the liquid inlet assembly is communicated with the first port of the first flow channel, and the liquid outlet assembly is communicated with the second port of the second flow channel.

In some examples, the liquid inlet assembly is welded with the first port of the first flow passage, and/or the liquid outlet assembly is welded with the second port of the second flow passage.

In some examples, the intake assembly includes a first extension and an inlet nozzle; the liquid outlet assembly comprises a second extending part and an outlet water nozzle; the first extending part is connected with a first port of the first flow passage in a welded mode, the inlet water nozzle is connected with the first extending part in a welded mode, the second extending part is connected with a second port of the second flow passage in a welded mode, and the outlet water nozzle is connected with the second extending part in a welded mode.

In some examples, the liquid inlet and the liquid outlet of the third flow channel are respectively connected with a set of the first opening and the second opening which are correspondingly arranged.

In some examples, the liquid-cooled plate includes a first sub liquid-cooled plate, a second sub liquid-cooled plate, and a connection portion; the first sub liquid cooling plate and the second sub liquid cooling plate respectively comprise a third port and a fourth port which are arranged oppositely, and the third port of the first sub liquid cooling plate and the third port of the second sub liquid cooling plate are respectively used as a liquid inlet and a liquid outlet of the third flow channel; and the fourth port of the first sub liquid cooling plate and the fourth port of the second sub liquid cooling plate are communicated with the connecting part to form the third flow passage.

In some examples, the first sub liquid-cooled panel, the second sub liquid-cooled panel, and the connecting portion are an integrally molded structure.

In some examples, a first one and a last one of the plurality of partition plates disposed side by side in a length direction of the flow field plate serve as a first end plate and a second end plate, respectively; a first fixing piece is arranged on one side, away from the second end plate, of the first end plate, and a second fixing piece is arranged on one side, away from the first end plate, of the second end plate; the first fixing piece and the second fixing piece are used for fixedly connecting the shell with the box body.

In some examples, the flow channel plate has a first fixing hole, the partition plate has a second fixing hole, when the liquid cooling plate is inserted into the accommodating portion of the partition plate, the first fixing hole and the second fixing hole are arranged in a one-to-one correspondence, and a first bolt can penetrate through the first fixing hole and the second fixing hole which are arranged in a corresponding manner to fixedly connect the flow channel plate and the partition plate.

In some examples, the battery case further includes a side plate disposed opposite to the flow channel plate and capable of being fixedly coupled to the fixing plate when the liquid cooling plate is inserted into the receiving portion of the partition.

In some examples, the battery case further includes a cover plate disposed opposite to the fixing plate and capable of being fixedly coupled to the separator when the liquid cooling plate is inserted into the receiving portion of the separator.

In a second aspect, an embodiment of the present disclosure further provides a battery module, which includes any one of the battery cases described above.

In some examples, the battery module further comprises a battery cell, and the battery cell is positioned in a space defined by the adjacently arranged partition boards.

Drawings

Fig. 1 is an exploded view of a battery case according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a flow field plate according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a liquid cooled panel in an embodiment of the present disclosure;

FIG. 4 is a schematic view of a spacer in an embodiment of the disclosure;

fig. 5 is a schematic view of a battery housing assembly provided in an embodiment of the present disclosure.

Wherein the reference numerals are: a flow passage plate 10; a first opening 11; a second opening 12; a liquid-cooled plate 20; a fixed plate 30; a partition plate 40; a liquid inlet 51; a liquid outlet 52; the accommodating portion 60; a liquid inlet assembly 70; a liquid outlet assembly 80; a first port 13; a second port 14; the first extension portion 71; an inlet water nozzle 72; the second extension 81; an outlet water nozzle 82; a first sub liquid-cooling plate 21; a second sub-liquid cooling plate 22; a connecting portion 23; a third port 15; a fourth port 16; a third sub-flow channel 501; a first end plate 41; a second end plate 42; a first fixing member 411; a second fixing member 421; a first fixing hole 101.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the disclosure, provided in the accompanying drawings, is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Reference to "a plurality or a number" in this disclosure means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

With the vigorous development of new energy industries, battery systems are concerned as core components of the new energy industries, and the performance requirements of people on the battery systems are higher and higher. However, the battery system generates a large amount of heat during charge and discharge, and excessively high temperature affects battery performance. Therefore, the design of the heat dissipation system is critical to the battery system.

Common heat dissipation methods include air cooling, liquid cooling, phase change materials, heat pipes, and the like, wherein the liquid cooling technology has the characteristics of mature application, good cooling effect, and the like, and is widely used in heat dissipation design of battery systems. In the prior art, when a battery system is radiated by adopting a liquid cooling technology, the system level radiation is mainly adopted, namely, a whole liquid cooling plate is arranged at the bottom of a box body of the battery system; module level heat dissipation, namely the liquid cooling plate is arranged in a module shell (comprising a lower shell and a side plate) and the like. Because traditional liquid cooling structural design is comparatively simple, arrange the monoblock liquid cooling board in battery system bottom or a face of module in general, it only dispels the heat to a face, and the heat dissipation area is too single. Meanwhile, as heat conduction needs to pass through a plurality of surfaces, the heat transfer efficiency is inevitably reduced, so that the heat dissipation effect of the whole battery system is poor and the internal temperature difference is large.

The inventor finds that, in the related art, because the liquid cooling structure is simple, the liquid cooling structure is often only a single plate, the heat dissipation surface is single, the heat dissipation in multiple directions of the battery module cannot be satisfied, and the problems of small effective heat dissipation area, low heat dissipation efficiency, large temperature difference at different positions and the like of the battery module are caused, and the service life of the battery system is seriously influenced by the problems.

In view of this, in the disclosed embodiments, a battery case and a battery module including the same are provided.

In a first aspect, fig. 1 is an exploded view of a battery case according to an embodiment of the present disclosure, and as shown in fig. 1, the embodiment of the present disclosure provides a battery case including a flow channel plate 10, a plurality of liquid cooling plates 20, a fixing plate 30, and a plurality of partition plates 40. In the embodiment of the present disclosure, the accommodating portion 60 is provided inside the partition plate 40 corresponding to the liquid cooling plate 20, and the liquid cooling plate 20 can be inserted into the accommodating portion 60, and the liquid cooling plate 20 is inserted into the accommodating portion 60 corresponding to the partition plate 40, so that the effective heat dissipation area of the liquid cooling plate 20 and the electric core set in the accommodating space defined by the adjacent partition plate 40 can be increased, thereby reducing the temperature difference inside the battery module when the liquid cooling circulation is performed inside the battery module, and improving the space utilization rate and the integration of the battery module.

Specifically, fig. 2 is a schematic view of a flow channel plate according to an embodiment of the present disclosure, as shown in fig. 2, the flow channel plate 10 has a first flow channel (not shown) and a second flow channel (not shown) penetrating along a length direction thereof, the first flow channel is provided with a plurality of first openings 11 arranged side by side along the length direction of the flow channel plate 10, the second flow channel is provided with a plurality of second openings 12 arranged side by side along the length direction of the flow channel plate 10, and the first openings 11 and the second openings 12 are arranged in a one-to-one correspondence manner. The first flow channel and the second flow channel are both used as flow channels of cooling liquid; the first openings 11 and the second openings 12 are arranged in a one-to-one correspondence manner to be connected with the liquid cooling plate 20 to form a complete loop; in the embodiment of the present disclosure, the spacing lengths between the plurality of first openings 11 and the spacing lengths between the plurality of second openings 12 are not limited, and the spacing lengths may be equal or different, and are related to the sizes of the battery cells to be mounted;

for convenience of description and understanding, in the embodiments of the present disclosure, the first port 13 of the first flow passage is taken as an inlet port of the cooling liquid, and the second port 14 of the second flow passage is taken as an outlet port of the cooling liquid; of course, it is understood that the present disclosure is not limited to the locations of the inlet and outlet ports for the cooling fluid, such as: the first port 13 of the second flow passage may be used as a liquid inlet port of the cooling liquid, and the second port 14 of the first flow passage may be used as a liquid outlet port of the cooling liquid.

The liquid cooling plates 20 are arranged side by side along the length direction of the flow channel plate 10, and each liquid cooling plate 20 has a third flow channel (not shown in the figure), and a liquid inlet 51 and a liquid outlet 52 of the third flow channel are respectively communicated with a group of correspondingly arranged first openings 11 and second openings 12. The arrangement is such that the third flow channel forms a passageway with the first and second flow channels;

as shown in fig. 1, the battery case provided by the embodiment of the present disclosure includes six liquid-cooled plates 20 arranged side by side along the length direction of the flow channel plate 10, and the following description will be given by taking as an example that the cooling liquid flows through only the first liquid-cooled plate 20 of the six liquid-cooled plates 20 arranged side by side along the length direction of the flow channel plate 10:

the cooling liquid flows in from the first port 13 of the first flow channel, enters the third flow channel of the first liquid-cooling plate 20 of the six liquid-cooling plates 20 arranged side by side in the length direction of the flow channel plate 10 from the first opening 11 of the first flow channel, flows in from the liquid inlet 51 of the third flow channel, flows out from the liquid outlet 52 of the third flow channel after flowing through the third flow channel, flows in the second flow channel from the second opening 12 of the second flow channel, and finally flows out from the second port 14 of the second flow channel.

It should be noted that, the above description has been made only by taking an example in which the cooling liquid flows through only the first liquid-cooled plate 20 among the six liquid-cooled plates 20 arranged side by side in the longitudinal direction of the flow field plate 10, and in fact, the cooling liquid may flow through a plurality of liquid-cooled plates 20.

The plurality of partition plates 40 are arranged side by side along the length direction of the flow field plate 10 and fixed on the fixing plate 30, and the partition plates 40 are arranged corresponding to the liquid cooling plates 20 one by one; fig. 4 is a schematic diagram of a partition board in the embodiment of the present disclosure, as shown in fig. 4, each partition board 40 includes a receiving portion 60 penetrating along a length direction thereof, and each liquid-cooling plate 20 can be inserted into the receiving portion 60 of the corresponding partition board 40; the receiving portion 60 is shaped to fit the liquid cooling plate 20 so that the liquid cooling plate 20 can be inserted therein.

The number of the liquid cooling plate 20 and the partition plate 40 in the embodiment of the present disclosure is not limited, and depends on the number of the electric core groups, for example: as shown in fig. 1, the liquid cooling plates 20 and the partition plates 40 are six, and the adjacent partition plates 40 define five accommodating spaces in which five electric core sets can be placed.

In the embodiment of the present disclosure, through inserting liquid cooling plate 20 into accommodating portion 60 corresponding to partition plate 40 that sets up, make partition plate 40 except having the function of preventing short circuit from taking place between the electric core group of adjacent setting, can also make the effective heat radiating area increase of liquid cooling plate 20 and electric core group contact, make liquid cooling plate 20 arrange the position even and deep, thereby when liquid cooling circulation is carried out in battery module inside, reduce the inside temperature difference of battery module, promote battery module space utilization and integrated nature.

In some examples, the coolant may be a glycol-based solution, but the kind of the coolant is not limited in the disclosed embodiment.

In some examples, the receiving portion 60 of the partition 40 may be formed by an aluminum extrusion process, so that the partition 40 has good quality and high mechanical properties, and the partition 40 is not easily deformed and damaged when the liquid cooling plate 20 is inserted into the receiving portion 60 of the partition 40; meanwhile, the process flow of the separator 40 formed in this way is simple, and the manufacturing cost is reduced.

In some examples, as shown in fig. 2, the battery case includes not only the above-described structure but also the liquid inlet assembly 70 and the liquid outlet assembly 80; the first flow channel and the second flow channel respectively comprise a first port 13 and a second port 14 which are oppositely arranged, the liquid inlet assembly 70 is communicated with the first port 13 of the first flow channel, and the liquid outlet assembly 80 is communicated with the second port 14 of the second flow channel; the liquid inlet assembly 70 and the liquid outlet assembly 80 are respectively installed at the first port 13 of the first flow passage and the second port 14 of the second flow passage to serve as an inflow port of the first flow passage and an outflow port of the second flow passage, and are arranged such that the liquid inlet assembly 70 and the liquid outlet assembly 80 communicate with the first flow passage and the second flow passage.

It should be noted that, in the embodiment of the present disclosure, only the liquid inlet assembly 70 is in communication with the first port 13 of the first flow passage, and the liquid outlet assembly 80 is in communication with the second port 14 of the second flow passage, but it should be understood that this is only one connection manner, for example: the inlet assembly 70 may be in communication with the first port 13 of the second flow path and the outlet assembly 80 may be in communication with the second port 14 of the first flow path. The connection manner is only required to enable the cooling liquid to flow into the first flow channel/the second flow channel from the liquid inlet assembly 70 and finally flow out from the liquid outlet assembly 80 through liquid cooling circulation, and the disclosure does not limit this.

As shown in fig. 1, a battery case provided by an embodiment of the present disclosure includes six liquid-cooled plates 20 arranged side by side along a length direction of a flow channel plate 10, and is described below by taking as an example that an inlet liquid assembly 70 is communicated with a first port 13 of a first flow channel, an outlet liquid assembly 80 is communicated with a second port 14 of a second flow channel, and cooling liquid flows through only a first liquid-cooled plate 20 of the six liquid-cooled plates 20 arranged side by side along the length direction of the flow channel plate 10:

the cooling liquid flows into the first flow channel from the liquid inlet assembly 70 installed at the first port 13 of the first flow channel, enters the third flow channel of the first liquid cooling plate 20 of the six liquid cooling plates 20 arranged side by side in the length direction of the flow channel plate 10 from the first opening 11 of the first flow channel, flows in from the liquid inlet 51 of the third flow channel, flows out from the liquid outlet 52 of the third flow channel after flowing through the third flow channel, flows into the second flow channel from the second opening 12 of the second flow channel, and finally flows out from the liquid outlet assembly 80 installed at the second port 14 of the second flow channel.

In some examples, the inlet assembly 70 is welded to the first port 13 of the first flow passage, and/or the outlet assembly 80 is welded to the second port 14 of the second flow passage. The welded connection mode is adopted because the leakage of the cooling liquid may cause short circuit between the battery cores, thereby seriously affecting the performance of the battery and seriously causing fire. The adoption of the welding connection mode can better ensure the sealing performance of the liquid inlet assembly 70 and the liquid outlet assembly 80 and the flow channel plate 10, thereby ensuring the safety performance of the battery shell.

Further, as shown in fig. 2, the liquid inlet assembly 70 comprises a first extension part 71 and an inlet water nozzle 72; the liquid outlet assembly 80 comprises a second extension part 81 and an outlet water nozzle 82; the first extending portion 71 is welded to the first port 13 of the first flow channel, the inlet water nozzle 72 is welded to the first extending portion 71, the second extending portion 81 is welded to the second port 14 of the second flow channel, and the outlet water nozzle 82 is welded to the second extending portion 81.

It should be noted that, in the embodiment of the present disclosure, only the first extension portion 71 is welded and connected to the first port 13 of the first flow passage, and the second extension portion 81 is welded and connected to the second port 14 of the second flow passage, but it is understood that this is only one connection manner, for example: the first extension portion 71 is welded to the first port 13 of the second flow passage, and the second extension portion 81 is welded to the second port 14 of the first flow passage. The connection manner is only required to enable the cooling liquid to flow into the first flow channel/the second flow channel from the liquid inlet assembly 70 and finally flow out from the liquid outlet assembly 80 through liquid cooling circulation, and the disclosure does not limit this.

In some examples, the inlet 51 and the outlet 52 of the third flow passage are respectively connected with a set of correspondingly arranged first openings 11 and second openings 12 by welding. The welded connection mode is adopted because the leakage of the cooling liquid may cause short circuit between the battery cores, thereby seriously affecting the performance of the battery and seriously causing fire. And the adoption of the welding connection mode can better ensure the sealing performance of the liquid cooling plate 20 and the flow passage plate 10, thereby ensuring the safety performance of the battery shell.

In some examples, fig. 3 is a schematic diagram of a liquid cooling plate in an embodiment of the present disclosure, and as shown in fig. 3, the liquid cooling plate 20 includes a first sub liquid cooling plate 21, a second sub liquid cooling plate 22, and a connecting portion 23, in the embodiment of the present disclosure, the first sub liquid cooling plate 21 and the second sub liquid cooling plate 22 are rectangular plate-shaped, the connecting portion 23 is semicircular plate-shaped, and the structure of the liquid cooling plate 20 formed by final connection is similar to a U shape; the first sub liquid-cooling plate 21 and the second sub liquid-cooling plate 22 respectively comprise a third port 15 and a fourth port 16 which are oppositely arranged, and the third port 15 of the first sub liquid-cooling plate 21 and the third port 15 of the second sub liquid-cooling plate 22 are respectively used as a liquid inlet 51 and a liquid outlet 52 of a third flow channel; the fourth port 16 of the first sub liquid-cooling plate 21 and the fourth port 16 of the second sub liquid-cooling plate 22 are both communicated with the connection portion 23 to form a third flow passage.

Wherein, all can have a plurality of third sub-runners 501 in first sub-liquid cooling board 21 and the second sub-liquid cooling board 22, as shown in fig. 3, all have six third sub-runners 501 in first sub-liquid cooling board 21 and the second sub-liquid cooling board 22 to form the liquid cooling board 20 that has porous microchannel like harmonica's inside, set up like this and make liquid cooling board 20 have advantages such as lightweight, with low costs.

In the embodiment of the present disclosure, the number of the third sub-flow channels 501 inside the first sub-liquid-cooling plate 21 and the second sub-liquid-cooling plate 22 is not limited.

In the embodiment of the present disclosure, the shapes of the liquid-cooled plate 20 and the partition plate 40 are not limited, as long as the liquid-cooled plate 20 matches the shape of the partition plate 40, and the liquid-cooled plate 20 can be inserted into the receiving portion 60 of the partition plate 40. For example: the liquid-cooled plate 20 may have a rectangular plate shape, and the partition plate 40 and the receiving portion 60 thereof may also have a rectangular plate shape, so that the liquid-cooled plate 20 can be inserted into the receiving portion 60.

In some examples, the plurality of third sub-flow channels 501 in the first sub-liquid-cooling plate 21 and the second sub-liquid-cooling plate 22 may be formed by an aluminum extrusion process, so that the formed liquid-cooling plate 20 has good quality and high mechanical properties, and when the liquid-cooling plate 20 is inserted into the accommodating portion 60 of the partition plate 40, the liquid-cooling plate 20 is not easily deformed and damaged; meanwhile, the process flow of the liquid cooling plate 20 formed in the way is simple, and the manufacturing cost is reduced.

In some examples, the first sub liquid-cooling plate 21, the second sub liquid-cooling plate 22, and the connection portion 23 are an integrally molded structure. The liquid cooling plate 20 formed in this way has good sealing performance, and meanwhile, the manufacturing process is simple, and the manufacturing cost is reduced.

In some examples, a first separator 40 and a last separator 40 of the plurality of separators 40 arranged side by side in the length direction of the flow field plate 10 serve as a first end plate 41 and a second end plate 42, respectively; a first fixing piece 411 is arranged on one side of the first end plate 41, which is far away from the second end plate 42, and a second fixing piece 421 is arranged on one side of the second end plate 42, which is far away from the first end plate 41; the first fixing member 411 and the second fixing member 421 are used to fixedly connect the battery case to the battery module case.

Specifically, as shown in fig. 1, a first partition plate 40 among a plurality of partition plates 40 arranged side by side in the length direction of the flow field plate 10 is located at the head end of the fixed plate 30 and serves as a first end plate 41, a last partition plate 40 among a plurality of partition plates 40 arranged side by side in the length direction of the flow field plate 10 is located at the tail end of the fixed plate 30 and serves as a second end plate 42, the first end plate 41 and the second end plate 42 have the same structure as the partition plates 40, and each has a receiving portion 60 inside to allow the liquid cooling plate 20 to be inserted therein; the first fixing piece 411 is arranged on one side of the first end plate 41 departing from the second end plate 42, and the second fixing piece 421 is arranged on one side of the second end plate 42 departing from the first end plate 41; the first fixing member 411 and the second fixing member 421 have the same structure and are both triangular brackets with fixing holes, and the triangular brackets are arranged on the first fixing member 411 and the second fixing member 421 to obtain better stability, so that the structure of the battery case is more stable; wherein, the fixed orifices is used for battery case and battery module box fixed connection, specifically can be for the bolt.

The first fixing member 411 is taken as an example for detailed description: the first fixing piece 411 has a first connecting portion 23 and a second connecting portion 23; wherein, first connecting portion 23 and first end plate 41 set up perpendicularly and with first end plate 41 fixed connection, first connecting portion 23 still has a plurality of fixed orificess, the bolt can be through fixed orificess with battery case and battery module box fixed connection, second connecting portion 23 and first end plate 41 fixed connection, and second connecting portion 23 has a plurality of openings.

The first fixing member 411 and the second fixing member 421 may also be in other forms, for example, they may be square brackets having fixing holes, which is not limited by the present disclosure.

In some examples, as shown in fig. 2, the flow channel plate 10 has first fixing holes 101 disposed at intervals, the first fixing holes 101 are disposed in one-to-one correspondence with the liquid cooling plates 20, and a second fixing hole (not shown) is disposed on a side of the partition plate 40 facing the flow channel plate 10, when the liquid cooling plates 20 are inserted into the accommodating portion 60 of the partition plate 40, the first fixing holes 101 are disposed in one-to-one correspondence with the second fixing holes, and a first bolt (not shown) can pass through the first fixing holes 101 and the second fixing holes, which are disposed in correspondence, to fixedly connect the flow channel plate 10 and the partition plate 40.

Specifically, a set of liquid cooling plates 20 and a partition plate 40 correspondingly arranged in fig. 1 is taken as an example for description; the flow channel plate 10 is provided with first fixing holes 101 arranged at intervals, the first fixing holes 101 and the liquid cooling plates 20 are arranged in a one-to-one correspondence manner, one side of the partition plate 40, facing the flow channel plate 10, is provided with second fixing holes, when the liquid cooling plates 20 arranged in correspondence with the partition plate 40 are inserted into the accommodating portion 60 of the partition plate 40, the first fixing holes 101 and the second fixing holes form a one-to-one correspondence relationship, and first bolts (not shown in the figure) can penetrate through the first fixing holes 101 and the second fixing holes arranged in correspondence manner, so that the flow channel plate 10 and the partition plate 40 are fixedly connected. Wherein the first bolt plays a role in fastening connection. The embodiment of the present disclosure uses a fastening member, such as a bolt, to facilitate the operation of fixedly connecting and disconnecting the flow field plate 10 and the partition plate 40, and to reduce the production cost. The form of the fastening member used to fixedly connect the flow channel plate 10 and the partition plate 40 in the embodiment of the present disclosure includes, but is not limited to, a bolt as long as the flow channel plate 10 and the partition plate 40 can be fixedly connected by the arrangement of the fastening member. Such as screws, studs, etc.

In some examples, the battery case further includes a side plate disposed opposite to the flow channel plate 10 and capable of being fixedly coupled with the fixing plate 30 when the liquid-cooled plate 20 is inserted into the receiving portion 60 of the partition plate 40.

Specifically, the side plate opposite to the fixing plate 30 has fixing holes arranged at intervals, the fixing plate 30 also has fixing holes arranged at intervals at corresponding positions, and the side plate can be fixedly connected with the fixing plate 30 through a fastener, for example, the side plate is fixedly connected with the fixing plate 30 through bolts.

In some examples, the battery case further includes a cover plate disposed opposite to the fixing plate 30 and capable of being fixedly coupled with the separator 40 when the liquid-cooled plate 20 is inserted into the receiving portion 60 of the separator 40.

Specifically, the cover plate has fixing holes spaced apart from each other on the opposite surfaces of the flow channel plate 10 and the partition plate 40, and fixing holes spaced apart from each other are also formed in the corresponding positions of the flow channel plate 10 and the partition plate 40, and the cover plate may be fixedly connected to the partition plate 40 and the flow channel plate 10 by fasteners, for example, bolts are used to fixedly connect the cover plate to the partition plate 40 and the flow channel plate 10.

In the battery case according to the embodiment of the present disclosure shown in fig. 1, fixing holes are formed in the flow channel plate 10, the partition plate 40, the first end plate 41, the second end plate 42, and the fixing plate 30, and the fastening members can be fastened through the fixing holes.

In a second aspect, an embodiment of the present disclosure further provides a battery module including any one of the battery cases described above.

This public battery module including above-mentioned arbitrary battery case can realize the multi-direction heat dissipation of battery module, increases effective heat radiating area, simultaneously, because liquid cold plate 20 can insert in the portion 60 that holds of baffle 40, can make the difference in temperature between the battery module reduce, the battery module temperature is balanced, and whole temperature uniformity is high to can realize the high rate operation.

In some examples, the battery module further includes a cell located within a space defined by adjacently disposed separators 40.

Specifically, fig. 5 is a schematic view of a battery case assembly provided in an embodiment of the present disclosure, and as shown in fig. 5, accommodating spaces for accommodating battery cells are defined between the first end plate 41 and the partition plate 40, between adjacent partition plates 40, and between the second end plate 42 and the partition plate 40. It should be noted that, here, the battery cell may be a battery cell group formed by arranging a plurality of battery cells in groups.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (13)

1. A battery shell is characterized by comprising a flow channel plate, a plurality of liquid cooling plates, a fixing plate and a plurality of partition plates; wherein,

the runner plate is provided with a first runner and a second runner which penetrate along the length direction of the runner plate, the first runner is provided with a plurality of first openings which are arranged side by side along the length direction of the runner plate, the second runner is provided with a plurality of second openings which are arranged side by side along the length direction of the runner plate, and the first openings and the second openings are arranged in a one-to-one correspondence manner;

the liquid cooling plates are arranged side by side along the length direction of the runner plate, each liquid cooling plate is provided with a third runner, and a liquid inlet and a liquid outlet of each third runner are respectively communicated with the first opening and the second opening which are correspondingly arranged in one group;

the plurality of partition plates are arranged side by side along the length direction of the runner plate and are fixed on the fixed plate, and the partition plates and the liquid cooling plates are arranged in one-to-one correspondence; each partition plate comprises a containing part penetrating along the length direction of the partition plate, and each liquid cooling plate can be inserted into the containing part of the corresponding partition plate.

2. The battery housing of claim 1, further comprising a liquid inlet assembly and a liquid outlet assembly; the first flow channel and the second flow channel respectively comprise a first port and a second port which are oppositely arranged, the liquid inlet assembly is communicated with the first port of the first flow channel, and the liquid outlet assembly is communicated with the second port of the second flow channel.

3. The battery shell as recited in claim 2, wherein the liquid inlet assembly is welded with the first port of the first flow passage, and/or the liquid outlet assembly is welded with the second port of the second flow passage.

4. The battery housing of claim 2, wherein the inlet assembly comprises a first extension and an inlet nozzle; the liquid outlet assembly comprises a second extending part and an outlet water nozzle; the first extending part is connected with a first port of the first flow passage in a welded mode, the inlet water nozzle is connected with the first extending part in a welded mode, the second extending part is connected with a second port of the second flow passage in a welded mode, and the outlet water nozzle is connected with the second extending part in a welded mode.

5. The battery case of claim 1, wherein the liquid inlet and the liquid outlet of the third flow channel are respectively connected to a set of the first opening and the second opening by welding.

6. The battery case of claim 1, wherein the liquid-cooled plate comprises a first sub liquid-cooled plate, a second sub liquid-cooled plate, and a connecting portion; the first sub liquid cooling plate and the second sub liquid cooling plate respectively comprise a third port and a fourth port which are arranged oppositely, and the third port of the first sub liquid cooling plate and the third port of the second sub liquid cooling plate are respectively used as a liquid inlet and a liquid outlet of the third flow channel; and the fourth port of the first sub liquid cooling plate and the fourth port of the second sub liquid cooling plate are both communicated with the connecting part to form the third flow passage.

7. The battery case of claim 6, wherein the first sub-liquid-cooled plate, the second sub-liquid-cooled plate, and the connecting portion are an integrally formed structure.

8. The battery case according to claim 1, wherein a first one of the separators and a last one of the separators, which are arranged side by side in a length direction of the flow field plate, serve as a first end plate and a second end plate, respectively; a first fixing piece is arranged on one side, away from the second end plate, of the first end plate, and a second fixing piece is arranged on one side, away from the first end plate, of the second end plate; the first fixing piece and the second fixing piece are used for fixedly connecting the shell with the box body.

9. The battery housing of claim 1, wherein the flow channel plate has a first fixing hole, the partition plate has a second fixing hole, and when the liquid cooling plate is inserted into the receiving portion of the partition plate, the first fixing hole and the second fixing hole are arranged in a one-to-one correspondence, and a first bolt can pass through the first fixing hole and the second fixing hole which are arranged in a corresponding manner, so as to fixedly connect the flow channel plate and the partition plate.

10. The battery case according to claim 1, further comprising a side plate disposed opposite to the flow channel plate and capable of being fixedly coupled to the fixing plate when the liquid-cooled plate is inserted into the receiving portion of the partition.

11. The battery case according to claim 1, further comprising a cover plate disposed opposite to the fixing plate and capable of being fixedly coupled to the separator when the liquid-cooled plate is inserted into the receiving portion of the separator.

12. A battery module characterized by comprising the battery case according to any one of claims 1 to 11.

13. The battery module of claim 12, further comprising a cell located within a space defined by the adjacently disposed separators.

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