CN218548659U

CN218548659U - Curb plate subassembly and battery module

Info

Publication number: CN218548659U
Application number: CN202222799264.0U
Authority: CN
Inventors: 郑琳
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-02-28
Anticipated expiration: 2032-10-24

Abstract

The utility model belongs to the technical field of the battery, specifically disclose a side plate assembly, this side plate assembly sets up the both sides at the electric core group, this side plate assembly is including the liquid cooling portion and the fixed part of interconnect, can play the effect of support to the electric core group through the fixed part, fixed respond well, and the inside cavity of liquid cooling portion forms the liquid cooling passageway that supplies the coolant liquid circulation, the heat exchange takes place for the lateral wall of coolant liquid accessible liquid cooling portion and electric core group, thereby to cooling down of the side of electric core group, the inside space of battery module has been practiced thrift, space utilization is improved, and battery module's whole weight is lighter, be favorable to the energy density promotion of battery module. The embodiment also provides a battery module, which comprises the side plate assembly.

Description

Curb plate subassembly and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a curb plate subassembly and battery module.

Background

Along with the electric automobile market is gradually ripe, the demand of lithium cell increases year by year, and the electric core of lithium cell can produce great heat at the in-process of charge-discharge, nevertheless because lithium cell chemical property itself, the lithium cell needs work under certain suitable temperature, for this reason, needs to set up cooling system and lowers the temperature to electric core.

At present, most lithium batteries basically adopt a mode of arranging a liquid cooling plate at the bottom of a battery core or a module to dissipate heat. However, the liquid cooling plate arranged at the bottom of the battery cell or the module has the following problems:

1. the weight of the liquid cooling plate is relatively heavy, and generally accounts for 2% -3% of the total weight of the battery pack, so that the energy density of the battery pack cannot be greatly improved;

2. the liquid cooling plate occupies the most important space in the height direction of the whole battery pack, so that the space utilization rate is reduced;

3. the side plates of the module are only used for integration and fixation, are single in use and occupy more module space, and generally occupy 4% -5% of the space of the whole module, so that space waste is caused.

Therefore, a side plate assembly and a battery module are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a curb plate subassembly and battery module are integrated as an organic whole with curb plate and liquid cooling board, have reduced the total weight of battery module, and occupation space is less, have improved the inside space utilization of battery module, and energy density is higher.

To achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, the utility model provides a side plate assembly, side plate assembly includes:

the liquid cooling part is internally hollow to form a liquid cooling channel for circulating cooling liquid;

the top end of the fixing part is connected with the bottom end of the liquid cooling part, and the fixing part is used for fixing the side plate assembly.

Optionally, the side panel assembly comprises a closure, the two ends of the liquid cooling portion forming an opening, the closure being disposed at the opening.

Optionally, be equipped with first strengthening rib in the liquid cooling portion, first strengthening rib with liquid cooling portion inside wall and/or shutoff piece inside wall is connected.

Optionally, the first reinforcing rib divides the interior of the liquid cooling portion into a closed collision avoidance cavity and a closed liquid cooling channel.

Optionally, a second reinforcing rib is arranged in the liquid cooling portion, the second reinforcing rib is connected with the inner side wall of the liquid cooling portion, the liquid cooling channel is divided into a plurality of sub-channels by the second reinforcing rib, and the sub-channels are mutually communicated.

Optionally, be equipped with first water faucet and second water faucet on the liquid cooling portion, first water faucet with the second water faucet sets up respectively the both ends of liquid cooling portion, first water faucet with the second water faucet all with the liquid cooling passageway intercommunication.

Optionally, the first water nozzle and the second water nozzle are both arranged in an L shape, and the extending directions of the first water nozzle and the second water nozzle are opposite.

Optionally, the first water nozzle is communicated with a liquid inlet pipeline, and the second water nozzle is communicated with a liquid outlet pipeline.

Optionally, the bottom end of the fixing portion is bent to one side to form a first flange.

Optionally, a second flange extends outwards from one side of the fixing portion, and the second flange is disposed at a position where the fixing portion is connected with the liquid cooling portion.

Optionally, a plurality of fixing lugs are arranged on the second flange, and fixing grooves are arranged in the middle of the fixing lugs and used for fixing the side plate assembly.

On the other hand, the utility model provides a battery module, including the electric core group to and the curb plate subassembly in the above-mentioned arbitrary scheme, the curb plate subassembly sets up the both sides of electric core group, and with the curb plate subassembly is connected.

Optionally, the electric core group includes a plurality of electric cores of arranging in proper order, the outside cladding of electric core has the barrier film, the barrier film with the side that curb plate subassembly supported is equipped with the trompil.

The utility model has the advantages that:

the utility model provides a side plate assembly, this side plate assembly includes liquid cooling portion and fixed part, the inside cavity of liquid cooling portion forms the liquid cooling passageway that supplies the coolant liquid circulation, the coolant liquid passes through the lateral wall of liquid cooling portion and the electric core group of setting in one side takes place the heat exchange, thereby cool down to the side of electric core group, can play good cooling effect to the electric core group through liquid cooling portion, the fixed part sets up the below at liquid cooling portion, the bottom of fixed part is connected with the bottom of liquid cooling portion, on the one hand, can play the effect of support to the electric core group through the fixed part, the middle part position of avoiding battery module appears warping, on the other hand, the fixed part can also play good fixed action to the electric core group, guarantee the final unitized fixed strength of battery module.

Above-mentioned curb plate subassembly has replaced the setting of electric core group bottom or battery module bottom liquid cooling board among the traditional technical scheme, has practiced thrift the inside space of battery module, has reduced the whole height of battery module, has improved space utilization to because the inside cavity of liquid cooling portion, reduced the whole weight of battery module, more be favorable to the energy density of battery module to promote, and overall structure is simple, and processing is easy, and the cost is lower.

This embodiment still provides a battery module, including electric core group and foretell curb plate subassembly, the curb plate subassembly sets up to two, and two curb plate subassemblies set up the both sides at electric core group respectively. Can fix the electric core group simultaneously through curb plate subassembly to cooling down to the electric core group, having saved the setting of liquid cold plate in traditional battery module, alleviateed battery module's total weight, improved the inside space utilization of battery module, be favorable to energy density's promotion.

Drawings

Fig. 1 is a schematic structural diagram of a battery module provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a side plate assembly provided in an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a left side view of a side plate assembly provided in an embodiment of the present invention.

In the figure:

100. the electric core group; 200. a side plate assembly; 210. a liquid cooling section; 211. a liquid cooling channel; 2111. a first through hole; 2112. a second through hole; 212. a first water nozzle; 213. a second water nozzle; 214. a blocking member; 215. a first reinforcing rib; 2151. an anti-collision cavity; 216. a second reinforcing rib; 2161. a sub-flow channel; 220. a fixed part; 221. a first flange; 222. a second flange; 223. fixing the ear; 2231. fixing grooves; 300. an end plate; 310. an insulating member; 400. a CCS component; 500. and a top cover.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, the present embodiment provides a side plate assembly 200, wherein the side plate assembly 200 is disposed at both sides of the electric core pack 100, and is used for fixing the electric core pack 100 and cooling the electric cores arranged in sequence in the electric core pack 100 at the same time. Specifically, this curb plate subassembly 200 includes interconnect's liquid cooling portion 210 and fixed part 220, and wherein fixed part 220 sets up in the below of liquid cooling portion 210, on the one hand, can play the effect of support to electric core group 100 through fixed part 220, avoids battery module's middle part position to appear warping, and on the other hand, fixed part 220 can also play good fixed action to electric core group 100, guarantees the final unitized fixed strength of battery module. The inside cavity of liquid cooling portion 210 forms the liquid cooling passageway 211 that supplies the coolant liquid circulation, and one side of liquid cooling portion 210 is connected with electric core group 100, and the coolant liquid passes through the lateral wall of liquid cooling portion 210 and sets up the electric core group 100 in one side and takes place heat exchange to cooling to the side of electric core group 100, can play good cooling effect to electric core group 100 through liquid cooling portion 210.

The curb plate subassembly 200 in this embodiment has replaced the setting of electric core group 100 bottom or battery module bottom liquid cooling board among the traditional technical scheme, has practiced thrift the inside space of battery module, has reduced the whole height of battery module, has improved space utilization to because the inside cavity of liquid cooling portion 210, reduced the whole weight of battery module, more be favorable to the energy density of battery module to promote, and overall structure is simple, and processing is easy, and the cost is lower.

Further, referring to fig. 2 and 3, a first water nozzle 212 and a second water nozzle 213 are arranged on one side of the liquid cooling part 210 far away from the electric core assembly 100, the first water nozzle 212 and the second water nozzle 213 are respectively arranged at two ends of the liquid cooling part 210 along the length direction, both the first water nozzle 212 and the second water nozzle 213 are communicated with the liquid cooling channel 211, cooling liquid can enter the liquid cooling channel 211 through the first water nozzle 212, the cooling liquid exchanges heat with the electric core assembly 100 through the side wall of the liquid cooling part 210, so that the side surface of the electric core assembly 100 is cooled, and then the cooling liquid flows out of the liquid cooling channel 211 through the second water nozzle 213.

As an optional scheme, a first through hole 2111 and a second through hole 2112 are formed in one side, far away from the electric core pack 100, of the liquid cooling portion 210, the first water nozzle 212 is arranged at the first through hole 2111, the second water nozzle 213 is arranged at the second through hole 2112, the first water nozzle 212 and the second water nozzle 213 are arranged in an L shape, the extending directions of the first water nozzle 212 and the second water nozzle 213 are opposite, so that the first water nozzle 212 and the second water nozzle 213 can be connected into the liquid cooling pipeline conveniently, the first water nozzle 212 is communicated with the liquid inlet pipeline and the liquid cooling pipeline 211, the second water nozzle 213 is communicated with the liquid outlet pipeline and the liquid cooling pipeline 211, and cooling liquid flows out of the liquid storage pipeline through the second water nozzle 213 after entering the liquid cooling pipeline 211 from the liquid inlet pipeline through the first water nozzle 212.

In order to improve the heat exchange efficiency, the liquid cooling portion 210 and the fixing portion 220 may be made of aluminum material, which has good heat conductivity and is beneficial to heat transfer. In addition, the liquid cooling portion 210 and the fixing portion 220 can be integrally formed, and the fixing portion 220 is a solid section, so as to improve the mechanical strength of the fixing portion 220 and prevent the fixing portion 220 from deforming when the weight of the electrical core assembly 100 is large.

Referring to fig. 3 and 4, the side plate assembly 200 in the present embodiment includes a blocking member 214, the liquid cooling portion 210 has a tubular structure, the cross section of the liquid cooling portion 210 is rectangular, two ends of the liquid cooling portion 210 form openings, and the blocking member 214 is disposed at the openings for blocking the openings at the two ends of the liquid cooling portion 210 so as to form a closed space inside the liquid cooling portion 210.

As an alternative, a first reinforcing rib 215 is arranged in the liquid cooling portion 210, and the first reinforcing rib 215 is connected with the inner side wall of the liquid cooling portion 210 and/or the inner side wall of the blocking piece 214. The first reinforcing rib 215 is disposed along the length direction of the liquid cooling portion 210, and the first reinforcing rib 215 partitions the interior of the liquid cooling portion 210 into the closed collision-prevention chamber 2151 and the closed liquid cooling passage 211. Exemplarily, the first reinforcing rib 215 is provided in two, and is respectively provided at the top and the bottom of the liquid cooling portion 210, so that two airtight anti-collision cavities 2151 are formed at the top and the bottom of the liquid cooling portion 210, and by the arrangement of the anti-collision cavities 2151, the liquid cooling portion 210 can be prevented from being deformed or the liquid cooling channel 211 is prevented from being damaged due to the extrusion of some heavy objects on the liquid cooling portion 210, and a certain protection effect is achieved.

Further, a second reinforcing rib 216 is arranged in the liquid cooling portion 210, the second reinforcing rib 216 is connected with the inner side wall of the liquid cooling portion 210, two ends of the second reinforcing rib 216 are not connected with the inner side walls of the two plugging pieces 214 at two ends of the liquid cooling portion 210, the second reinforcing rib 216 divides the liquid cooling channel 211 into a plurality of sub flow channels 2161, and the sub flow channels 2161 are communicated with each other. In the present embodiment, two second ribs 216 are provided, the second ribs 216 divide the liquid-cooling passage 211 into three sub-passages 2161, the cooling liquid enters the liquid-cooling passage 211 through the first water nozzles 212, is divided into three parts, and flows to the second water nozzles 213, and flows out of the liquid-cooling passage 211 after merging at the second water nozzles 213.

Continuing to refer to fig. 3 and 4, the bottom of fixed part 220 is bent towards one side of electric core group 100 and is formed first flange 221, and first flange 221 is connected with the bottom of electric core group 100, and when electric core quantity in electric core group 100 is more, the length of battery module is longer, can play the effect of support to electric core group 100 through first flange 221, avoids the middle part position of battery module to appear warping, has improved the mechanical strength of battery module. The side plate assembly 200 in this embodiment can perform a good fixing function on the battery pack 100, and ensure the final grouping fixing strength of the battery modules.

A second flange 222 extends outwards from the side of the fixing portion 220 away from the electric core pack 100, and the second flange 222 is disposed at the position where the fixing portion 220 is connected to the liquid cooling portion 210. The second flange 222 is provided with a plurality of fixing lugs 223, in this embodiment, five fixing lugs 223 are taken as an example for description, a fixing groove 2231 is formed in the middle of each fixing lug 223, and the fixing groove 2231 is used for fixing the side plate assembly 200, so that after the battery modules are grouped, the plurality of battery modules are continuously assembled to form the battery pack. Of course, in other embodiments, the number of the fixing lugs 223 may be increased or decreased as appropriate according to the number of the electric cores in the electric core assembly 100, as long as the fixing strength can be ensured, which is not limited in this embodiment.

The present embodiment further provides a battery module, with reference to fig. 1, including a battery pack 100, and the above-mentioned side plate assemblies 200, wherein the two side plate assemblies 200 are provided, and the two side plate assemblies 200 are respectively provided at two sides of the battery pack 100. Can fix electric core group 100 simultaneously through curb plate subassembly 200 to cooling down electric core group 100, saved the setting of liquid cold plate in traditional battery module, alleviateed battery module's total weight, improved the inside space utilization of battery module, be favorable to energy density's promotion.

Generally speaking, in order to ensure that a plurality of electric cores in the electric core group 100 cannot be influenced by each other, the influence on the adjacent electric core when a single electric core breaks down is avoided, and a chain reaction is caused, and the outer side of the electric core is coated with an isolation film, namely a blue film in the prior art. In order to further improve the heat transfer effect between liquid cooling portion 210 and the electric core, can be equipped with the trompil on the barrier film in the electric core outside, the trompil setting is supported on the side that the barrier film leaned on with curb plate subassembly 200 to the side and the liquid cooling portion 210 direct contact of electric core improve the radiating efficiency, make the coolant liquid take away more heats of electric core, the cooling is respond well.

Further, the two ends of the electric core group 100 are also provided with end plates 300, the electric core group 100 is fixed together through the end plates 300 and the side plate assemblies 200, the CCS assembly 400 is arranged at the top of the electric core group 100, the series connection or the parallel connection of the electric cores in the electric core group 100 can be completed through the CCS assembly 400, the top cover 500 is arranged above the CCS assembly 400, the top cover 500 is connected with the end plates 300 or the side plate assemblies 200, and the CCS assembly 400 can be protected and insulated through the top cover 500. Of course, an insulator 310 is also disposed between the end plate 300 and the electric core pack 100.

Through adopting curb plate subassembly 200 in this embodiment, under the unchangeable condition of battery module volume, about electric core can increase 6mm on the basis of original height, the space utilization of the inside electric core of battery module directly promotes 4% -5%, and direct energy density promotes about 5% -6%.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A side plate assembly, characterized in that the side plate assembly (200) comprises:

a liquid cooling unit (210), wherein a liquid cooling channel (211) through which a cooling liquid flows is formed in the hollow interior of the liquid cooling unit (210);

the top end of the fixing part (220) is connected with the bottom end of the liquid cooling part (210), and the fixing part (220) is used for fixing the side plate assembly (200).

2. The side plate assembly of claim 1, wherein the side plate assembly (200) comprises a closure (214), an opening being formed at both ends of the liquid cooled section (210), the closure (214) being disposed at the opening.

3. The side plate assembly according to claim 2, characterized in that a first reinforcing rib (215) is provided in the liquid-cooled part (210), and the first reinforcing rib (215) is connected with the inner side wall of the liquid-cooled part (210) and/or the inner side wall of the block piece (214).

4. A side plate assembly according to claim 3, wherein the first reinforcing rib (215) divides the interior of the liquid cooling portion (210) into a closed collision avoidance cavity (2151) and a closed liquid cooling passage (211).

5. The sideplate assembly according to claim 4, wherein a second reinforcing rib (216) is provided in said liquid cooling portion (210), said second reinforcing rib (216) being connected to an inner sidewall of said liquid cooling portion (210), said second reinforcing rib (216) dividing said liquid cooling passage (211) into a plurality of sub flow passages (2161), said plurality of sub flow passages (2161) being communicated with each other.

6. The side plate assembly according to claim 1, wherein a first water nozzle (212) and a second water nozzle (213) are arranged on the liquid cooling portion (210), the first water nozzle (212) and the second water nozzle (213) are respectively arranged at two ends of the liquid cooling portion (210), and the first water nozzle (212) and the second water nozzle (213) are both communicated with the liquid cooling channel (211).

7. The side plate assembly of claim 6, wherein the first water nozzle (212) and the second water nozzle (213) are arranged in an L shape, and the first water nozzle (212) and the second water nozzle (213) extend in opposite directions.

8. The side plate assembly of claim 6, wherein the first water nozzle (212) is connected to a liquid inlet pipe and the second water nozzle (213) is connected to a liquid outlet pipe.

9. The side plate assembly according to claim 1, wherein the bottom end of the fixing portion (220) is bent to one side to form a first flange (221).

10. The side panel assembly according to claim 1, wherein a second flange (222) extends outwardly from a side of the fixing portion (220), the second flange (222) being provided at a position where the fixing portion (220) is connected to the liquid cooling portion (210).

11. The side plate assembly according to claim 10, wherein the second flange (222) is provided with a plurality of fixing lugs (223), and a fixing groove (2231) is formed in the middle of the fixing lugs (223), and the fixing groove (2231) is used for fixing the side plate assembly (200).

12. A battery module, comprising a battery pack (100), and a side plate assembly (200) according to any one of claims 1 to 11, wherein the side plate assembly (200) is disposed at both sides of the battery pack (100) and is connected to the side plate assembly (200).

13. The battery module according to claim 12, wherein the battery core group (100) comprises a plurality of sequentially arranged battery cells, the outer sides of the battery cells are coated with a separation film, and the side of the separation film, which abuts against the side plate assembly (200), is provided with an opening.