CN115939603A - battery pack - Google Patents
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- CN115939603A CN115939603A CN202211602677.3A CN202211602677A CN115939603A CN 115939603 A CN115939603 A CN 115939603A CN 202211602677 A CN202211602677 A CN 202211602677A CN 115939603 A CN115939603 A CN 115939603A
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- 239000007788 liquid Substances 0.000 claims abstract description 241
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 239000000110 cooling liquid Substances 0.000 claims abstract description 24
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims description 9
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the technical field of batteries, and discloses a battery pack which comprises battery modules, wherein each battery module comprises a first battery module, a second battery module, a third battery module, a fourth battery module, a liquid inlet manifold and a liquid outlet manifold. First battery module and third battery module are arranged along the first direction and are gone, and second battery module and fourth battery module are arranged along the first direction and are gone, form the stringing passageway between two lines, and every battery module all includes the liquid cooling subassembly, and the liquid cooling subassembly has inlet and liquid outlet, and inlet and liquid outlet all set up towards the stringing passageway. The liquid inlet main pipe is provided with a main liquid inlet, the liquid outlet main pipe is provided with a main liquid outlet, the liquid inlet main pipe and the liquid outlet main pipe are both arranged in the pipe distribution passageway, and after cooling liquid enters the liquid inlet main pipe from the main liquid inlet, the cooling liquid flows to the liquid inlet in the liquid cooling assembly and then flows out from the liquid outlet, enters the liquid outlet main pipe and flows out from the main liquid outlet. The temperature difference between different battery modules in the battery pack is small, the pressure drop is small, and the space occupied by the pipeline in the battery pack is small.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack.
Background
The battery module is a core component in the battery pack, and the safety performance of the battery module is one of the issues that manufacturers pay attention to in the production and preparation process of the battery pack. The battery package is at high rate charge-discharge in-process, often produces a large amount of heats, if these heats can not in time be dispelled, will seriously influence the security performance and the life of battery package, can take place the inside short circuit of battery package even when serious, finally cause chain reaction, cause battery package spontaneous combustion or explosion, cause the heavy loss for user's property and life. Therefore, a liquid cooling system is generally provided in the battery pack.
At present, to the battery package that contains a plurality of battery modules, the liquid cooling pipeline between each battery module adopts series design usually, and this just leads to the coolant liquid between the different battery modules to distribute inhomogeneously, and the difference in temperature between the battery module is too big. In addition, the water inlet and outlet pipelines are respectively arranged on two sides of the battery pack, and the liquid cooling system occupies more space inside the battery pack in the arrangement mode, so that the design of other components in the battery module is influenced.
Therefore, it is desirable to provide a battery pack to solve the above problems.
Disclosure of Invention
The invention aims to provide a battery pack, which has small temperature difference among different battery modules, small pressure drop and small space occupied by a pipeline in the battery pack.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery pack, comprising:
the battery module comprises a first battery module, a second battery module, a third battery module and a fourth battery module, wherein the first battery module and the third battery module are arranged in a line along a first direction, the second battery module and the fourth battery module are arranged in a line along the first direction, a pipe distribution passageway is formed between the two lines, the first battery module, the second battery module, the third battery module and the fourth battery module respectively comprise a liquid cooling assembly, the liquid cooling assembly is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both arranged towards the pipe distribution passageway;
feed liquor house steward and play liquid house steward, the feed liquor house steward has total inlet, it has total liquid outlet to go out liquid house steward, the feed liquor house steward with it all sets up to go out liquid house steward the stringing passageway, the inlet of liquid cooling subassembly communicate in the feed liquor house steward, the liquid outlet of liquid cooling subassembly communicate in go out liquid house steward, the coolant liquid is followed total inlet gets into the feed liquor house steward, flows through behind the liquid cooling subassembly, get into go out liquid house steward, and follow total liquid outlet flows.
Optionally, the battery module still includes electric core group, electric core group includes a plurality of electric cores, and is a plurality of the electric core is followed first direction is arranged and is the multirow, the liquid cooling subassembly includes the liquid cooling runner, the liquid cooling runner clamp is located adjacent two lines between the electric core.
Optionally, the liquid cooling subassembly includes feed liquor pipe and drain pipe, the inlet is located on the feed liquor pipe, the liquid outlet is located on the drain pipe, the feed liquor pipe with the drain pipe all along with first direction vertically direction extends and sets up respectively the both sides of electric core group, the both ends of liquid cooling runner communicate respectively in the feed liquor pipe with the drain pipe.
Optionally, the liquid outlet of the first battery module is communicated with a branch Aa, the liquid outlet of the second battery module is communicated with a branch Ab, the branch Aa and the branch Ab are merged to a branch a, and the branch a is communicated with the liquid outlet header pipe.
Optionally, a liquid outlet of the third battery module is communicated with a branch Ba, a liquid outlet of the fourth battery module is communicated with a branch Bb, and the branch Ba and the branch Bb are merged to a branch B;
the branch B, the branch A and the liquid outlet main pipe are communicated through a tee joint.
Optionally, the distance between the liquid outlets of the third battery module and the fourth battery module and the liquid outlet header pipe is greater than the distance between the liquid outlets of the first battery module and the second battery module and the liquid outlet header pipe; an included angle between the branch A and the liquid outlet header pipe is an acute angle, so that the sum of flow resistances of the cooling liquid flowing from the liquid outlets of the third battery module and the fourth battery module to the total liquid outlet is equal to the sum of flow resistances of the cooling liquid flowing from the liquid outlets of the first battery module and the second battery module to the total liquid outlet.
Optionally, the end of the liquid inlet header pipe is communicated with a branch pipe C, the end of the branch pipe C is communicated with a branch pipe Ca and a branch pipe Cb, the branch pipe Ca is communicated with the liquid inlet of the first battery module, and the branch pipe Cb is communicated with the liquid inlet of the second battery module.
Optionally, the end of the liquid inlet header pipe is communicated with a branch D, the end of the liquid inlet header pipe is communicated with a branch C and the branch D is connected through a three-way joint, the end of the branch D is communicated with a branch Da and a branch Db, the branch Da is communicated with the liquid inlet of the third battery module, and the branch Db is communicated with the liquid inlet of the fourth battery module.
Optionally, the flowing distances of the cooling liquid from the total liquid inlet to the liquid outlet of the first battery module, the liquid outlet of the second battery module, the liquid outlet of the third battery module and the liquid outlet of the fourth battery module are the same.
Optionally, the liquid cooling flow passage is a serpentine conduit.
Optionally, the first battery module and the second battery module are symmetrically arranged about a central axis of the length direction of the pipe distribution passageway;
the third battery module and the fourth battery module are symmetrically arranged around a central axis of the pipe distribution passageway in the length direction.
Optionally, the main liquid inlet and the main liquid outlet are located on the same side of the battery pack.
Has the beneficial effects that:
the battery pack provided by the invention comprises a plurality of battery modules, wherein the battery modules are arranged in two rows, and the passage between the two rows is used for arranging pipelines. The battery module includes the liquid cooling subassembly, and the liquid cooling subassembly is used for the cooling of battery package. The liquid cooling subassembly has inlet and liquid outlet, and the cooling liquid can flow into the liquid cooling subassembly from the inlet, flows through behind the liquid cooling subassembly and flows out from the liquid outlet, takes away the heat in the battery package simultaneously, reaches the effect of heat dissipation cooling. The liquid inlet and the liquid outlet are both arranged towards the pipe distribution passageway, so that a pipeline outside the battery module can be conveniently arranged in the pipe distribution passageway, and the phenomenon that the pipeline occupies too much space in the battery pack or influences the arrangement of components in the battery module is reduced. The liquid cooling assemblies are arranged in the pipe distribution passageway in parallel, so that the pressure drop of the whole system is reduced, and the balance of the temperature among the battery modules is guaranteed.
Drawings
Fig. 1 is a partial structural schematic view of a battery pack provided in the present invention;
FIG. 2 is a schematic diagram of a liquid cooling system according to the present invention;
FIG. 3 is a schematic diagram of a portion of a liquid cooling system according to the present invention;
FIG. 4 is a first schematic view of a partial duct structure in a piping aisle according to the present invention;
FIG. 5 is a schematic diagram of a second embodiment of a liquid cooling system according to the present invention;
fig. 6 is a schematic view of a partial pipeline structure in a piping aisle according to the present invention.
In the figure:
100. a pipelaying aisle; 110. a first battery module; 120. a second battery module; 130. a third battery module; 140. a fourth battery module; 101. a tray;
210. a liquid inlet pipe; 211. a liquid inlet; 220. a liquid outlet pipe; 221. a liquid outlet; 230. a liquid cooling flow passage;
300. a liquid outlet main pipe; 301. a main liquid outlet; 310. a branch A; 311. a branch Aa; 312. branch Ab; 320. a branch B; 321. a branch Ba; 322. a branch Bb;
400. a liquid inlet main pipe; 401. a total liquid inlet; 410. a branch C; 411. branch Ca; 412. a branch Cb; 420. a branch D; 421. a branch Da; 422. the branch Db.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, the first feature is directly over and obliquely above the second feature, or simply means 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 invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring to fig. 1 and 2, the present embodiment provides a battery pack including battery modules, where the battery modules include a first battery module 110, a second battery module 120, a third battery module 130, a fourth battery module 140, a liquid inlet manifold 400, and a liquid outlet manifold 300. First battery module 110 and third battery module 130 are arranged along the first direction and are in line, second battery module 120 and fourth battery module 140 are arranged along the first direction and are in line, form stringing passageway 100 between two lines, first battery module 110, second battery module 120, third battery module 130 and fourth battery module 140 all include the liquid cooling subassembly, the liquid cooling subassembly has inlet 211 and liquid outlet 221, inlet 211 and liquid outlet 221 all set up towards stringing passageway 100. The inlet manifold 400 has a total inlet 401, the outlet manifold 300 has a total outlet 301, both the inlet manifold 400 and the outlet manifold 300 are disposed in the piping aisle 100, and after the cooling liquid enters the inlet manifold 400 from the total inlet 401, the cooling liquid flows to the inlet 211 of the liquid cooling module, flows out from the outlet 221, enters the outlet manifold 300, and flows out from the total outlet 301.
The battery pack that this embodiment provided includes a plurality of battery module, and the battery module is arranged and is two lines, and the passageway between two lines is used for arranging the pipeline. The battery module includes the liquid cooling subassembly, and the liquid cooling subassembly is used for cooling down for the battery module. The liquid cooling subassembly has inlet 211 and liquid outlet 221, and the coolant liquid can flow into the liquid cooling subassembly from inlet 211, flows through the liquid cooling subassembly after flowing through from liquid outlet 221 and flows out, takes away the heat in the battery package simultaneously, reaches the effect of heat dissipation cooling. Both the liquid inlet 211 and the liquid outlet 221 are disposed toward the tube distribution passageway 100, so that a pipe outside the battery module can be conveniently arranged in the tube distribution passageway 100, thereby reducing the amount of space occupied by the pipe inside the battery pack or affecting the arrangement of components in the battery module. The liquid inlet main pipe 400 and the liquid outlet main pipe 300 are arranged in the pipe distribution passageway 100, cooling liquid enters from the liquid inlet main pipe 400 and flows out from the liquid outlet main pipe 300 after flowing through the liquid cooling assemblies, and the plurality of liquid cooling assemblies are designed in parallel, so that the pressure drop of the whole system is reduced, and the balance of the temperature among the battery modules is guaranteed.
Further, fig. 1 is a schematic structural diagram of a liquid cooling system provided in this embodiment, and the liquid cooling system includes liquid cooling assemblies and pipes disposed in the piping aisle 100 for circulating cooling liquid. The battery pack in this embodiment includes four battery modules, and four battery modules are "field" style of calligraphy and arrange. Optionally, the battery module includes electric core group, and electric core group includes a plurality of electric cores, and a plurality of electric cores are arranged along first direction (the length direction of battery package) and are the multirow, and the liquid cooling subassembly includes liquid cooling runner 230, and liquid cooling runner 230 presss from both sides and locates between two adjacent lines of electric cores. Optionally, each battery module is provided with a tray 101, and the electric core groups are arranged in the tray 101. The periphery of the tray 101 is provided with a flanging, and the water inlet pipe and the water outlet pipe are arranged on the flanging of the tray 101 and are arranged close to the electric core group.
Further, referring to fig. 1 and 2, the liquid cooling assembly includes a liquid inlet pipe 210 and a liquid outlet pipe 220, the liquid inlet 211 is located on the liquid inlet pipe 210, the liquid outlet 221 is located on the liquid outlet pipe 220, the liquid inlet pipe 210 and the liquid outlet pipe 220 both extend along a direction perpendicular to the first direction and are respectively disposed at two sides of the electric core assembly, and two ends of the liquid cooling flow channel 230 are respectively communicated with the liquid inlet pipe 210 and the liquid outlet pipe 220. Optionally, liquid-cooling channels 230 extend in a first direction, i.e., liquid-cooling channels 230 are disposed perpendicular to liquid inlet pipe 210 and liquid outlet pipe 220. Optionally, the liquid cooling flow channel 230 is a serpentine pipeline, and the curvature of the serpentine pipeline is set according to the diameter of the battery cell and the arrangement mode, so that the side surface of the liquid cooling flow channel 230 is attached to the side wall of the battery cell as much as possible, thereby ensuring that a large heat exchange area exists between the liquid cooling flow channel 230 and the battery cell. Optionally, a heat conducting structural adhesive may be disposed between the side wall of the liquid-cooling flow channel 230 and the side wall of the battery cell, so as to increase the heat conducting efficiency between the liquid-cooling flow channel 230 and the battery cell, and enable the heat of the battery cell to be rapidly transferred to the liquid-cooling flow channel 230.
Referring to fig. 3 and 4, the liquid outlet 221 of the first battery module 110 is communicated with a branch Aa311, the liquid outlet 221 of the second battery module 120 is communicated with a branch Ab312, the branch Aa311 and the branch Ab312 are merged into a branch a310, and the branch a310 is communicated with the liquid outlet header 300. Therefore, the coolant flowing out of the first battery module 110 can flow to the branch Aa311 through the liquid outlet 221, the coolant flowing out of the second battery module 120 can flow to the branch Ab312 through the liquid outlet 221, and the coolant in the branch Aa311 and the branch Ab312 is merged into the branch a310 and then flows to the liquid outlet header 300.
Further, the liquid outlet 221 of the third cell module 130 is communicated with a branch Ba321, the liquid outlet 221 of the fourth cell module 140 is communicated with a branch Bb322, the branch Ba321 and the branch Bb322 are merged to a branch B320, and the branch B320, the branch a310 and the liquid outlet header 300 are communicated through a three-way joint. Therefore, the cooling fluid flowing out of the third battery module 130 can flow to the branch Ba321 through the fluid outlet 221, the cooling fluid flowing out of the fourth battery module 140 can flow to the branch Bb322 through the fluid outlet 221, and the cooling fluid in the branch Ba321 and the branch Bb322 is merged to the branch B320 and then flows to the fluid outlet header 300.
In this embodiment, the number and the arrangement manner of the battery cells and the liquid cooling assemblies of the first battery module 110, the second battery module 120, the third battery module 130, and the fourth battery module 140 are the same.
Further, in the present embodiment, the distance from the liquid outlet 221 of the third battery module 130 and the fourth battery module 140 to the liquid outlet header 300 is greater than the distance from the liquid outlet 221 of the first battery module 110 and the second battery module 120 to the liquid outlet header 300, so that the included angle between the branch a310 and the liquid outlet header 300 is set to be an acute angle, so that the sum of the flow resistances of the cooling liquid flowing through the liquid outlet 221 of the third battery module 130 and the fourth battery module 140 to the total liquid outlet 301 is equal to the sum of the flow resistances of the cooling liquid flowing through the liquid outlet 221 of the first battery module 110 and the second battery module 120 to the total liquid outlet 301. As shown in fig. 3, the length of the branch B320 is greater than that of the branch a310, the on-way resistance of the branch B320 is greater, and through the design of the inverted triangle tee joint between the branch a310 and the liquid outlet header 300, the cooling liquid in the branch a310 needs to enter the liquid outlet header 300 through a larger turning angle, so that the local resistance from the branch a310 to the liquid outlet header 300 is increased. Meanwhile, the length difference between the branch A310 and the branch B320 can be adjusted by adjusting the positions of the junction points of the branch A310, the branch B320 and the liquid outlet header pipe 300, so that the flow resistance from the branch A310 to the main liquid outlet 301 is equal to the flow resistance from the branch B320 to the main liquid outlet 301, the purpose of approximately the same distribution of the cooling liquid flow of each battery module is finally achieved, and each battery module is ensured to have the same cooling effect.
Further, referring to fig. 5 and 6, the end of the inlet manifold 400 is communicated with a branch C410, the end of the branch C410 is communicated with a branch Ca411 and a branch Cb412, the branch Ca411 is communicated with the inlet 211 of the first battery module 110, and the branch Cb412 is communicated with the inlet 211 of the second battery module 120. Therefore, the coolant enters the inlet manifold 400 from the main inlet 401, flows to the branch C410, and then is divided into two paths, one path flowing to the first battery module 110 via the branch Ca411, and the other path flowing to the second battery module 120 via the branch Cb 412.
Further, the tail end of the liquid inlet header pipe 400 is communicated with a branch pipe D420, the tail end of the liquid inlet header pipe 400, the branch pipe C410 and the branch pipe D420 are connected through a three-way joint, the tail end of the branch pipe D420 is communicated with a branch pipe Da421 and a branch pipe Db422, the branch pipe Da421 is communicated with the liquid inlet 211 of the third battery module 130, and the branch pipe Db422 is communicated with the liquid inlet 211 of the fourth battery module 140. Through such a pipeline connection manner, after the cooling liquid enters the liquid inlet header pipe 400 from the main liquid inlet 401, the cooling liquid is divided into two paths, namely a branch C410 and a branch D420, the cooling liquid in the branch C410 flows to the first battery module 110 or the second battery module 120, the cooling liquid in the branch D420 is divided into two paths, namely a branch Da421 and a branch Db422, the cooling liquid in the branch Da421 flows to the third battery module 130, and the cooling liquid in the branch Db422 flows to the fourth battery module 140.
Alternatively, the flowing distances of the cooling liquid from the total liquid inlet 401 to the liquid outlet 221 of the first battery module 110, the liquid outlet 221 of the second battery module 120, the liquid outlet 221 of the third battery module 130, and the liquid outlet 221 of the fourth battery module 140 are all the same, so that the pressure drop in the pipelines for feeding the cooling liquid is uniform, and the temperatures in the pipelines are equalized.
Further, the first battery module 110 and the second battery module 120 are symmetrically arranged about the central axis of the piping aisle 100 in the length direction, and the third battery module 130 and the fourth battery module 140 are symmetrically arranged about the central axis of the piping aisle 100 in the length direction, so that the battery pack is compact in overall structure and convenient to arrange in a pipeline manner. Further, first battery module 110 and third battery module 130 bilateral symmetry set up, and second battery module 120 and fourth battery module 140 bilateral symmetry set up to the inlet 211 of four battery modules all is roughly located the middle part in stringing passageway 100, thereby is roughly the same to total inlet 401's distance, thereby the pipeline length that is used for the inlet liquid of four battery modules is roughly the same, and the pressure drop is roughly the same, guarantees whole liquid cooling system temperature equilibrium.
Optionally, in this embodiment, the total liquid inlet 401 and the total liquid outlet 301 are located on the same side of the battery pack. In other embodiments, the main inlet port 401 and the main outlet port 301 may also be located on different sides of the battery pack.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will 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 (12)
1. A battery pack, comprising:
the battery module comprises a first battery module (110), a second battery module (120), a third battery module (130) and a fourth battery module (140), wherein the first battery module (110) and the third battery module (130) are arranged in a row along a first direction, the second battery module (120) and the fourth battery module (140) are arranged in a row along the first direction, a pipe distribution passageway (100) is formed between the two rows, the first battery module (110), the second battery module (120), the third battery module (130) and the fourth battery module (140) respectively comprise a liquid cooling assembly, the liquid cooling assembly is provided with a liquid inlet (211) and a liquid outlet (221), and the liquid inlet (211) and the liquid outlet (221) are arranged towards the pipe distribution passageway (100);
inlet manifold (400) and liquid outlet manifold (300), inlet manifold (400) have total inlet (401), liquid outlet manifold (300) have total liquid outlet (301), inlet manifold (400) with liquid outlet manifold (300) all set up stringing passageway (100), inlet (211) of liquid cooling subassembly communicate in inlet manifold (400), liquid outlet (221) of liquid cooling subassembly communicate in liquid outlet manifold (300), the coolant liquid is followed total inlet (401) gets into inlet manifold (400), flows through behind the liquid cooling subassembly, gets into liquid outlet manifold (300), and follows total liquid outlet (301) flow out.
2. The battery pack of claim 1, wherein the battery module further comprises a core pack, the core pack comprises a plurality of battery cells, the battery cells are arranged in a plurality of rows along the first direction, the liquid cooling assembly comprises liquid cooling runners (230), and the liquid cooling runners (230) are sandwiched between two adjacent rows of the battery cells.
3. The battery pack of claim 2, wherein the liquid cooling assembly comprises a liquid inlet pipe (210) and a liquid outlet pipe (220), the liquid inlet (211) is located on the liquid inlet pipe (210), the liquid outlet (221) is located on the liquid outlet pipe (220), the liquid inlet pipe (210) and the liquid outlet pipe (220) both extend along a direction perpendicular to the first direction and are respectively disposed at two sides of the battery pack, and two ends of the liquid cooling channel (230) are respectively communicated with the liquid inlet pipe (210) and the liquid outlet pipe (220).
4. The battery pack according to claim 3, wherein the liquid outlet (221) of the first battery module (110) is communicated with a branch Aa (311), the liquid outlet (221) of the second battery module (120) is communicated with a branch Ab (312), the branch Aa (311) and the branch Ab (312) merge into a branch A (310), and the branch A (310) is communicated with the liquid outlet header pipe (300).
5. The battery pack according to claim 4, wherein the liquid outlet (221) of the third battery module (130) is communicated with a branch Ba (321), the liquid outlet (221) of the fourth battery module (140) is communicated with a branch Bb (322), and the branch Ba (321) and the branch Bb (322) are merged into a branch B (320);
the branch B (320), the branch A (310) and the liquid outlet header pipe (300) are communicated through a three-way joint.
6. The battery pack according to claim 5, wherein the distance from the liquid outlet (221) of the third battery module (130) and the fourth battery module (140) to the liquid outlet manifold (300) is greater than the distance from the liquid outlet (221) of the first battery module (110) and the second battery module (120) to the liquid outlet manifold (300); an included angle between the branch A (310) and the liquid outlet main pipe (300) is an acute angle, so that the sum of flow resistances of the cooling liquid flowing from the liquid outlets (221) of the third battery module (130) and the fourth battery module (140) to the total liquid outlet (301) is equal to the sum of flow resistances of the cooling liquid flowing from the liquid outlets (221) of the first battery module (110) and the second battery module (120) to the total liquid outlet (301).
7. The battery pack according to claim 3, wherein the end of the inlet manifold (400) is communicated with a branch C (410), the end of the branch C (410) is communicated with a branch Ca (411) and a branch Cb (412), the branch Ca (411) is communicated with the inlet (211) of the first battery module (110), and the branch Cb (412) is communicated with the inlet (211) of the second battery module (120).
8. The battery pack according to claim 7, wherein a branch D (420) is connected to a terminal of the inlet manifold (400), the branch C (410) and the branch D (420) are connected by a three-way joint, a branch Da (421) and a branch Db (422) are connected to a terminal of the branch D (420), the branch Da (421) is connected to the inlet (211) of the third battery module (130), and the branch Db (422) is connected to the inlet (211) of the fourth battery module (140).
9. The battery pack according to claim 8, wherein the coolant flows at the same distance from the total liquid inlet (401) to the liquid outlet (221) of the first battery module (110), the liquid outlet (221) of the second battery module (120), the liquid outlet (221) of the third battery module (130), and the liquid outlet (221) of the fourth battery module (140).
10. The battery pack of any of claims 2-9, wherein the liquid cooling flow path (230) is a serpentine shaped conduit.
11. The battery pack according to any one of claims 1-9, wherein the first battery module (110) and the second battery module (120) are symmetrically disposed about a central axis of the length direction of the piping aisle (100);
the third battery module (130) and the fourth battery module (140) are symmetrically arranged about a central axis of the length direction of the piping aisle (100).
12. A battery pack according to any of claims 1-9, wherein the total liquid inlet (401) and the total liquid outlet (301) are located on the same side of the battery pack.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211602677.3A CN115939603A (en) | 2022-12-13 | 2022-12-13 | battery pack |
| PCT/CN2022/142694 WO2023179147A1 (en) | 2022-12-13 | 2022-12-28 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211602677.3A CN115939603A (en) | 2022-12-13 | 2022-12-13 | battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115939603A true CN115939603A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093523A (en) * | 2023-04-12 | 2023-05-09 | 盐城师范学院 | Modularized rapid splicing type lithium battery pack |
| CN116568008A (en) * | 2023-05-31 | 2023-08-08 | 小米汽车科技有限公司 | Liquid cooling radiator, motor controller and vehicle |
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2022
- 2022-12-13 CN CN202211602677.3A patent/CN115939603A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093523A (en) * | 2023-04-12 | 2023-05-09 | 盐城师范学院 | Modularized rapid splicing type lithium battery pack |
| CN116093523B (en) * | 2023-04-12 | 2023-06-20 | 盐城师范学院 | Modularized rapid splicing type lithium battery pack |
| CN116568008A (en) * | 2023-05-31 | 2023-08-08 | 小米汽车科技有限公司 | Liquid cooling radiator, motor controller and vehicle |
| CN116568008B (en) * | 2023-05-31 | 2024-02-23 | 小米汽车科技有限公司 | Liquid cooling radiator, motor controller and vehicle |
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