阅读说明：本技术 一种新能源汽车电池模组 (new energy automobile battery module ) 是由 卞煜荣 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种新能源汽车电池模组,包括电芯、载流片和保护壳；所述电芯阵列设置有多个,且各个所述电芯的正极统一朝向一端,负极朝向另一端；所述载流片包括分别设置于所述电芯两端的正极载流片和负极载流片；所述正极载流片包括第一基板、分布于所述第一基板内侧面上且对应于各个电芯正极的第一连接点,以及固定于所述第一基板顶部边缘的正极耳；所述负极载流片包括第二基板、分布于所述第二基板内侧面上且对应于各个电芯负极的第二连接点,以及固定于所述第二基板顶部边缘的负极耳；所述保护壳包括分别设置于所述正极载流片和负极载流片外层的第一壳体和第二壳体。本发明能够对电池模组的内部及其各个电芯进行充分冷却。(The invention discloses a new energy automobile battery module, which comprises a battery core, a current-carrying sheet and a protective shell, wherein the battery core is arranged on the current-carrying sheet; the battery cell array is provided with a plurality of battery cells, and the positive electrode of each battery cell faces one end uniformly, and the negative electrode faces the other end; the current-carrying pieces comprise a positive current-carrying piece and a negative current-carrying piece which are respectively arranged at two ends of the battery core; the positive current-carrying piece comprises a first substrate, first connecting points which are distributed on the inner side surface of the first substrate and correspond to the positive electrodes of the battery cells, and positive lugs fixed on the edge of the top of the first substrate; the negative current-carrying piece comprises a second substrate, second connection points which are distributed on the inner side surface of the second substrate and correspond to the negative electrodes of the battery cells, and negative lugs fixed on the edge of the top of the second substrate; the protective housing is including setting up respectively in the first casing and the second casing of positive pole current-carrying piece and negative pole current-carrying piece skin. The invention can fully cool the interior of the battery module and each battery cell thereof.)

1. The utility model provides a new energy automobile battery module which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

The battery comprises a plurality of battery cells (100), wherein the positive electrode of each battery cell (100) faces one end uniformly, and the negative electrode faces the other end;

The current-carrying piece (200) comprises a positive current-carrying piece (201) and a negative current-carrying piece (202) which are respectively arranged at two ends of the battery core (100); the positive current-carrying sheet (201) comprises a first substrate (201a), first connecting points (201b) distributed on the inner side surface of the first substrate (201a) and corresponding to the positive electrodes of the battery cells (100), and positive lugs (201c) fixed on the top edge of the first substrate (201 a); the negative current-carrying piece (202) comprises a second substrate (202a), second connection points (202b) which are distributed on the inner side face of the second substrate (202a) and correspond to the negative electrodes of the battery cells (100), and negative electrode lugs (202c) which are fixed on the top edge of the second substrate (202 a); and the number of the first and second groups,

The protective shell (300) comprises a first shell (301) and a second shell (302) which are respectively arranged on the outer layers of the positive current-carrying piece (201) and the negative current-carrying piece (202), and a ventilation gap (F) is formed between the edges of the first shell and the second shell.

2. The new energy automobile battery module of claim 1, characterized in that: the first shell (301) comprises a first end plate (301a) and a first edge piece (301b) arranged on the periphery of the first end plate (301a), and a first avoidance opening (301b-1) corresponding to the positive lug (201c) is formed in the first edge piece (301 b);

The second shell (302) comprises a second end plate (302a) and a second edge piece (302b) arranged around the outer edge of the second end plate (302a), and a second avoidance port (302b-1) corresponding to the negative electrode tab (202c) is arranged on the second edge piece (302 b);

A ventilation gap (F) exists between the first edge piece (301b) and the second edge piece (302b), and the first shell (301) and the second shell (302) are connected through a connecting piece (303).

3. The new energy automobile battery module of claim 2, characterized in that: the first end plate (301a) and the second end plate (302a) are both provided with heat dissipation holes (K).

4. The new energy automobile battery module of claim 2 or 3, characterized in that: the protective shell (300) further comprises a top protective cover (304) connected to the upper parts of the first shell (301) and the second shell (302) and a bottom protective cover (305) connected to the lower parts of the first shell (301) and the second shell (302);

A third avoidance port (304a) corresponding to the positive tab (201c) and the negative tab (202c) is formed in the top protective cover (304), and the third avoidance port (304a) is opened outwards;

The vent gap (F) is divided by the top (304) and bottom (305) covers into an air inlet (F-1) on one side and an air outlet (F-2) on the other side.

5. The new energy automobile battery module of claim 4, characterized in that: a connecting sheet (203) is fixed on each of the first connecting point (201b) and the second connecting point (202 b);

The connecting piece (203) comprises a fixed ring (203a) fixed on the first connecting point (201b) or the second connecting point (202b), an elastic section (203b) connected on the inner edge of the fixed ring (203a), and a contact piece (203c) fixed at the tail end of the elastic section (203b), wherein the contact piece (203c) forms inward offset relative to the fixed ring (203a) and is in contact connection with the positive pole or the negative pole of the battery cell (100).

6. the new energy automobile battery module of claim 5, characterized in that: the inner side surface of the first end plate (301a) is respectively provided with a first bulge (301a-1) corresponding to each first connecting point (201b), and each first bulge (301a-1) can respectively press the corresponding contact piece (203c) on the first connecting point (201b) inwards;

second protrusions (302a-1) corresponding to the second connection points (202b) are respectively arranged on the inner side surface of the second end plate (302a), and the second protrusions (302a-1) can respectively press the corresponding contact pieces (203c) on the second connection points (202b) inwards.

7. The new energy automobile battery module as claimed in any one of claims 1-3, 5 or 6, wherein: the liquid cooling unit (400) is arranged between the positive current-carrying piece (201) and the negative current-carrying piece (202);

The liquid cooling unit (400) comprises a liquid cooling cavity (401) in contact with each battery core (100), a connecting edge (402) arranged at the periphery of the outer edge of the liquid cooling cavity (401), and a liquid inlet (403) and a liquid outlet (404) which are connected with the liquid cooling cavity (401).

8. The new energy automobile battery module of claim 7, wherein: a cylinder wall (401a) corresponding to each electric core (100) is arranged in the liquid cooling cavity (401), a channel (401a-1) matched with the outer diameter of each electric core (100) is arranged on the inner side of the cylinder wall (401a), and each electric core (100) is inserted into the corresponding channel (401 a-1);

An intermediate partition plate (401b) is arranged between every two vertically adjacent cylinder walls (401a), each cylinder wall (401a) and the intermediate partition plate (401b) between the cylinder walls form a respective vertical array (P), and end partition plates (401c) are arranged at the upper end part and the lower end part of each vertical array (P) in a staggered mode at intervals, so that a circuitous liquid cooling channel (401d) is formed inside the liquid cooling cavity (401);

The liquid inlet (403) and the liquid outlet (404) are both communicated with the liquid cooling channel (401 d).

9. The new energy automobile battery module of claim 8, wherein: the liquid cooling device is characterized in that a diversion column (401e) is arranged in the middle of each adjacent four cylinder walls (401a) in rectangular distribution in the liquid cooling cavity (401), and each diversion column (401e) is not in contact with the four cylinder walls (401a) at the periphery.

10. The new energy automobile battery module as claimed in any one of claims 5, 6, 8 or 9, wherein: the wind guide device further comprises a wind guide unit (500) arranged on one side of the protective shell (300);

The air guide unit (500) comprises an air inlet pipeline (501) which is detachably connected to the air inlet (F-1).

Technical Field

The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile battery module.

Background

With the social requirements on environmental protection and energy conservation becoming higher and higher, new energy automobiles are more and more paid attention by governments and automobile manufacturers. The new energy automobile utilizes the battery, the motor and the electric control as the driving power and the driving control unit, and the power for the whole automobile to work is from the battery pack, so how to improve the energy efficiency ratio and the cruising ability is always the key direction for the research and development of the new energy automobile. However, there are some technical difficulties in the actual development process of new energy automobile batteries, such as: the service life and the service efficiency of the battery are seriously influenced by the temperature, the service life and the cruising ability of the battery which are directly and seriously influenced by overhigh working temperature are ensured, and therefore, the battery pack needs to be effectively cooled to maintain the service life of the battery pack.

at present, the battery pack of the new energy automobile is generally cooled by air cooling, and natural wind is blown to a battery system by a fan to take away heat so as to achieve the purpose of cooling. The cooling mode has the defects of insufficient cooling capacity, uneven cooling and the like, and particularly when the heat dissipation capacity of the battery pack is large, the heat generated by the system cannot be completely taken away by air cooling.

In addition, the battery pack of the existing new energy automobile is generally formed by connecting a plurality of groups of arrayed battery module structures in series one by one through a series copper bar, and each module structure is formed by arranging a plurality of battery cores. The existing battery pack cooling measures are only to introduce cold air into the whole space in the battery pack, but the outside of the module structure is provided with the coating of the protective shell, so that cold air flow is difficult to permeate into each module structure and each internal battery core of the module structure, and the heat of each battery core in each module structure is difficult to be generated due to the heat generation source of the battery pack, so that the existing air cooling method is difficult to realize the cooling of each battery core basic unit, and the excellent battery cooling effect is difficult to be fundamentally obtained.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems occurring in the existing new energy automobile battery.

Therefore, one of the purposes of the present invention is to provide a new energy automobile battery module, which can sufficiently cool the inside of the battery module and each battery cell thereof.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a new energy automobile battery module, it includes: the battery comprises a plurality of battery cells, wherein the array of the battery cells is provided with a positive electrode facing one end uniformly and a negative electrode facing the other end; the current-carrying piece comprises a positive current-carrying piece and a negative current-carrying piece which are respectively arranged at two ends of the battery cell; the positive current-carrying piece comprises a first substrate, first connecting points which are distributed on the inner side surface of the first substrate and correspond to the positive electrodes of the battery cells, and positive lugs fixed on the edge of the top of the first substrate; the negative current-carrying piece comprises a second substrate, second connection points which are distributed on the inner side surface of the second substrate and correspond to the negative electrodes of the battery cells, and negative lugs fixed on the edge of the top of the second substrate; and the protective shell comprises a first shell and a second shell which are respectively arranged on the outer layers of the positive current-carrying piece and the negative current-carrying piece, and a ventilation gap is formed between the edges of the first shell and the second shell.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the first shell comprises a first end plate and a first edge piece arranged on the periphery of the outer edge of the first end plate, and a first avoidance opening corresponding to the positive lug is formed in the first edge piece; the second shell comprises a second end plate and a second edge piece arranged on the periphery of the outer edge of the second end plate, and a second avoidance port corresponding to the negative electrode lug is arranged on the second edge piece; a ventilation gap exists between the first edge piece and the second edge piece, and the first shell and the second shell are connected through a connecting piece.

as a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: and the first end plate and the second end plate are both provided with heat dissipation holes.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the protective shell further comprises a top protective cover connected to the upper parts of the first shell and the second shell and a bottom protective cover connected to the lower parts of the first shell and the second shell; a third avoidance port corresponding to the positive electrode lug and the negative electrode lug respectively is formed in the top protective cover, and the third avoidance port is outward in opening; the ventilation gap is divided into an air inlet on one side and an air outlet on the other side by the top protective cover and the bottom protective cover.

as a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: connecting pieces are fixed on the first connecting points and the second connecting points; the connecting piece is including being fixed in retainer plate on first tie point or the second tie point, connecting the elastic segment on the retainer plate inward flange to and be fixed in the terminal contact piece of elastic segment, the contact piece for the retainer plate forms inside skew, and with the positive pole or the negative pole of electricity core carry out the contact connection.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the inner side surface of the first end plate is respectively provided with first bulges corresponding to the first connecting points, and the first bulges can respectively press corresponding contact pieces on the first connecting points inwards; second bulges corresponding to the second connection points are respectively arranged on the inner side surface of the second end plate, and the second bulges can respectively extrude the corresponding contact pieces on the second connection points inwards.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the liquid cooling unit is arranged between the anode current-carrying piece and the cathode current-carrying piece; the liquid cooling unit comprises liquid cooling cavities in contact with the battery cores, connecting edges arranged on the periphery of the outer edges of the liquid cooling cavities, and a liquid inlet and a liquid outlet which are connected with the liquid cooling cavities.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the inner side of the cylinder wall is provided with a channel matched with the outer diameter of the electric core, and each electric core is inserted into the corresponding channel; intermediate partition plates are arranged between every two vertically adjacent cylinder walls, the cylinder walls and the intermediate partition plates between the cylinder walls form respective vertical arrays, and end partition plates are arranged at the upper end and the lower end of each vertical array in a staggered mode at intervals, so that a circuitous liquid cooling channel is formed inside the liquid cooling cavity; the liquid inlet and the liquid outlet are communicated with the liquid cooling channel.

as a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: and the middle positions of every four adjacent cylinder walls in rectangular distribution in the liquid cooling cavity are provided with the diversion columns, and each diversion column is not contacted with the four peripheral cylinder walls.

As a preferred scheme of the new energy automobile battery module, the invention comprises the following steps: the wind guide unit is arranged on one side of the protective shell; the air guide unit comprises an air inlet pipeline which is detachably connected to the air inlet.

The invention has the beneficial effects that: the battery module and the battery cores in the battery module can be fully cooled, and compared with the prior art, the battery module has a more excellent battery cooling effect, maintains the service life and the endurance performance of the battery, and is convenient for arrangement and accurate installation of the battery cores.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

Fig. 1 is an external structural view of a battery module.

fig. 2 is an exploded view of the battery module.

Fig. 3 is a structural diagram of the positive and negative electrode current-carrying sheets and a partial detailed diagram of the connecting sheet.

Fig. 4 is a view showing the inner side surface structure of the first casing or the second casing.

Fig. 5 is a schematic diagram illustrating the insertion and assembly of the cell array and the liquid cooling unit.

fig. 6 is an internal structure view of the liquid cooling unit and a partial detailed view thereof.

Fig. 7 is a schematic diagram of a main route of a cooling liquid flow path inside the liquid cooling unit and a schematic diagram of a split flow of the cooling liquid after the cooling liquid meets a split column.

Fig. 8 is a schematic view of a plurality of battery modules after being first connected.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention provides a new energy vehicle battery module, which is capable of facilitating assembly and production and performing sufficient heat dissipation and cooling. New energy automobile battery module can be a plurality of through establishing ties the copper bar series connection, forms a battery package that can fully dispel the heat and possess long life and performance jointly.

New energy automobile battery module is including being a plurality of electric cores 100 of rectangular array, sets up in electric core 100 both ends and collects the current-carrying piece 200 of each electric core 100 positive negative pole to and wrap up in current-carrying piece 200 and electric core 100 outlying protective housing 300.

The plurality of battery cells 100 are arranged in a rectangular array to form a column vertical array. The positive electrodes of the battery cells 100 face one end of each battery cell, and the negative electrodes face the other end of each battery cell.

The current-carrying sheet 200 includes a positive current-carrying sheet 201 and a negative current-carrying sheet 202 respectively disposed at two ends of the battery cell 100, and the positive current-carrying sheet 201 and the negative current-carrying sheet 202 have the same structure and are disposed in a central symmetry manner.

The positive current-carrying tab 201 includes a first substrate 201a, a first connecting point 201b distributed on an inner side of the first substrate 201a and corresponding to the positive electrodes of the battery cells 100, and a positive tab 201c fixed on a top edge of the first substrate 201 a. Specifically, the first substrate 201a is a vertically arranged thin plate structure, and a plurality of first connection points 201b are distributed on the inner side surface of the first substrate 201a and can be in one-to-one corresponding contact with the positive electrodes of the battery cells 100, so that the positive electrodes of the battery cells 100 can be connected in parallel by the first substrate 201a through the first connection points 201b thereon, and are collected to the positive electrode lug 201c on the upper portion, thereby forming a positive electrode output end.

The negative current tab 202 includes a second substrate 202a, a second connection point 202b distributed on an inner side of the second substrate 202a and corresponding to the negative electrodes of the battery cells 100, and a negative tab 202c fixed to a top edge of the second substrate 202 a. Similarly, the second substrate 202a is a vertically disposed thin plate structure, and is parallel to the first substrate 201a, and a plurality of second connection points 202b are distributed on an inner side surface of the second substrate, and can be in one-to-one contact with the negative electrodes of the battery cells 100, so that the second substrate 202a can connect the negative electrodes of the battery cells 100 in parallel through the second connection points 202b thereon, and collect the negative electrodes to the upper negative electrode tab 202c to form a negative electrode output end.

The positive electrode tab 201c and the negative electrode tab 202c of the present invention are preferably made of a soft pure copper conductive material, and the outer surfaces of the positive electrode tab 201c and the negative electrode tab 202c may be plated with nickel.

The protective shell 300 is wrapped on the periphery of the current-carrying sheet 200 to form external protection of the battery module structure, and is also used for modular assembly and assembly of a single module structure, so that the battery pack is conveniently formed by being connected with other module structures in parallel in a modular manner. The protective case 300 of the present invention is preferably made of a light insulating material such as plastic.

Specifically, the protective case 300 is a split type, and includes a first case 301 and a second case 302 respectively disposed on outer layers of the positive current-carrying tab 201 and the negative current-carrying tab 202, and the first case 301 and the second case 302 are detachably connected (for example, edges of the first case 301 and the second case 302 are connected by a plurality of long screws). There is the interval between first casing 301 and the second casing 302, forms the side and when blowing in the cold wind through one of them side of ventilation gap F, cold wind can carry out week circulation soon in protective housing 300 earlier to with each electric core 100 after making full contact, other side discharge protective housing 300 of ventilation gap F again, the completion is to the cooling of battery module.

Further, the first casing 301 includes a first end plate 301a and a first edge piece 301b disposed on a periphery of the first end plate 301a, the first end plate 301a is a flat plate structure, the first edge piece 301b is a frame-shaped structure surrounding the first end plate 301a, and the first edge piece 301b is provided with a first avoiding opening 301b-1 corresponding to the positive tab 201 c. Similarly, the second casing 302 includes a second end plate 302a and a second edge member 302b disposed around the outer edge of the second end plate 302a, the second end plate 302a is a flat plate structure, the second edge member 302b is a frame-shaped structure surrounding the second end plate 302a, and the second edge member 302b is disposed with a second avoiding opening 302b-1 corresponding to the negative tab 202 c. Based on this, the ventilation gap F in the above is specifically the interval between the first edge piece 301b and the second edge piece 302 b.

The first housing 301 and the second housing 302 are connected by a connecting member 303. Specifically, the connecting member 303 may be a long screw, a corresponding connecting column is disposed on the inner side surface of the first housing 301, and a screw hole matched with the long screw is formed on the connecting column; and the second shell 302 is provided with corresponding through holes, and long screws pass through the through holes on the second shell 302 and are connected with the connecting columns of the first shell 301.

Further, a plurality of heat dissipation holes K are formed in each of the first end plate 301a and the second end plate 302 a.

Further, the protective case 300 further includes a top cover 304 attached to upper portions of the first and second cases 301 and 302 and a bottom cover 305 attached to lower portions of the first and second cases 301 and 302. The top cover 304 and the bottom cover 305 are used to close off the top and bottom of the protective case 300, i.e., the upper side opening and the lower side opening of the ventilation gap F, respectively. Thus, the vent gap F is divided by the top cover 304 and the bottom cover 305 into an inlet F-1 on one side and an outlet F-2 on the other side. The arrangement mode can ensure that cold air flow entering from the air inlet F-1 cannot be discharged from the top or the bottom, and can only be discharged from the air outlet F-2 at the other side after being transmitted inside the protective shell 300 in a circuitous manner, thereby ensuring that the cold air is in full contact with each electric core 100 and facilitating better heat exchange.

Further, the two ends of the top cover 304 (and the bottom cover 305) are bent to be attached to the first edge piece 301b and the second edge piece 302b, respectively, and are connected by screws.

further, the top cover 304 is provided with third avoiding openings 304a corresponding to the positive tab 201c and the negative tab 202c, respectively, and the third avoiding openings 304a are opened outwards. The positive tab 201c can sequentially protrude from the first avoidance port 301b-1 and the third avoidance port 304 a; the negative tab 202c can sequentially protrude from the second avoidance port 302b-1 and the third avoidance port 304a, and does not obstruct the external serial copper bars.

Furthermore, a connecting piece 203 is fixed to each of the first connecting point 201b and the second connecting point 202b, and is connected to the positive electrode and the negative electrode of the battery cell 100 through the connecting piece 203.

Specifically, the connecting piece 203 includes a fixing ring 203a fixed to the first connecting point 201b or the second connecting point 202b, an elastic section 203b connected to an inner edge of the fixing ring 203a, and a contact piece 203c fixed to an end of the elastic section 203 b. The fixing ring 203a may be a frame-shaped, ring-shaped, or other hollow and closed structure, and may be welded to each corresponding first connection point 201b or second connection point 202b, where the first connection point 201b or second connection point 202b may be a through hole that fits around the periphery of the fixing ring 203a or is smaller than the periphery of the fixing ring 203 a; the elastic section 203b is a curved plate in a bending shape and has certain lateral deformation resilience; the contact piece 203c is a sheet structure at the end of the elastic section 203b, and is used for directly making contact with the positive electrode and the negative electrode of the battery cell 100 for conducting electricity.

It should be noted that: the contact piece 203c is offset inward with respect to the fixing ring 203a, so that the contact piece 203c is not in the same plane as the fixing ring 203a after being bent by the elastic section 203b, and the contact piece 203c is closer to the battery cell 100 inward. Therefore, the inwardly offset contact pieces 203c can be in contact connection with the positive electrode or the negative electrode of the battery cell 100, and thus, the electric conduction is realized. Preferably, the connecting sheet 203 of the present invention is an integral type and is made of nickel sheet.

Further, the inner side surface of the first end plate 301a is respectively provided with first protrusions 301a-1 corresponding to the first connection points 201b, and the first protrusions 301a-1 can respectively press the corresponding contact pieces 203c on the first connection points 201b inwards, so that the contact pieces 203c of the connection pieces 203 can be in full pressing contact with the positive electrode of the battery cell 100, and the conductive quality is ensured.

Similarly, the inner side surface of the second end plate 302a is respectively provided with a second protrusion 302a-1 corresponding to each second connection point 202b, and each second protrusion 302a-1 can respectively press the corresponding contact piece 203c on the second connection point 202b inwards, so that the contact piece 203c of the connection piece 203 can be in full pressing contact with the negative electrode of the battery cell 100, and the conductive quality is ensured.

Further, the new energy automobile battery module further comprises a liquid cooling unit 400 arranged between the positive current-carrying piece 201 and the negative current-carrying piece 202, and the liquid cooling unit is used for carrying out liquid cooling on each battery cell 100, and can achieve an excellent battery heat dissipation effect by matching with an air cooling effect.

The liquid cooling unit 400 includes a liquid cooling cavity 401 contacting each of the battery cells 100, a connecting edge 402 disposed around the outer edge of the liquid cooling cavity 401, and a liquid inlet 403 and a liquid outlet 404 connected to the liquid cooling cavity 401. The liquid cooling cavity 401 is internally provided with a liquid cooling channel communicated with the liquid inlet 403 and the liquid outlet 404, so that the circulating refrigeration of liquid can be ensured.

Specifically, the cylindrical hollow cylinder walls 401a corresponding to the battery cells 100 are arranged in the liquid cooling cavity 401, the inner sides of the cylinder walls 401a are provided with through channels 401a-1 matched with the outer diameter of the battery cells 100, and two ends of each battery cell 100 penetrate through the corresponding channels 401a-1, so that the positioning and installation of the battery cells 100 can be realized, the battery cells 100 can be fully contacted with the periphery of the outer side surface of the battery cells 100, and the heat absorption and cooling are facilitated.

The connecting edge 402 is a peripheral frame structure of the liquid cooling chamber 401, and is used for fixing and connecting the liquid cooling unit 400 integrally. The connecting member 303 passes through the connecting edge 402, and the top cover 304 and the bottom cover 305 are provided with a recessed area A which is matched with the contour and thickness of the connecting edge 402; the top and bottom sections of connecting rim 402 are embedded in recessed areas a of top and bottom housing 304 and 305, respectively, and serve as a retaining and limiting feature for liquid cooling unit 400. In addition, the bottom cover 305 is provided with through openings 305a corresponding to the liquid inlet 403 and the liquid outlet 404, so as to facilitate the exit of the liquid inlet 403 and the liquid outlet 404.

Inside the liquid cooling cavity 401, a plurality of cylinder walls 401a can form a row of vertical arrangement groups, and a middle partition plate 401b is arranged between every two vertically adjacent cylinder walls 401 a. The invention sets the following steps: the cylinder walls 401a and the intermediate partition boards 401b between the cylinder walls form respective vertical arrays P, and the upper and lower ends of each vertical array P are alternately provided with end partition boards 401c (for example, the upper end of the first vertical array P is provided with an end partition board 401c connected with the upper part of the liquid cooling cavity 401, the upper end of the second vertical array P is provided with an end partition board 401c connected with the lower part of the liquid cooling cavity 401, and the upper end of the third vertical array P is provided with end partition boards 401c and … … connected with the upper part of the liquid cooling cavity 401), so that a circuitous liquid cooling channel 401d can be formed inside the liquid cooling cavity 401, and the liquid inlet 403 and the liquid outlet 404 are both communicated with the liquid cooling channel 401 d.

The liquid cooling channel 401d can be filled with cooling liquid, and the cooling liquid flows in the liquid cooling channel 401d in a roundabout manner to form a cooling liquid flow path, so that the liquid cooling cavity 401 can fully contact and fully cool each battery core 100 wrapped and attached with the battery core through the roundabout flowing cooling liquid.

Further, a shunt column 401e is arranged in the middle of each adjacent four cylinder walls 401a distributed in a rectangular shape in the liquid cooling cavity 401, the shunt column 401e is of a cylindrical structure, and each shunt column 401e is not in contact with the four cylinder walls 401a on the periphery, so that each shunt column 401e is located in the liquid cooling channel 401d in a spatial position. When the cooling liquid flows through the liquid cooling channel 401d, the cooling liquid is split when encountering the split column 401e, collides against the cylinder walls 401a at the two sides, and exchanges heat through the contact between the cylinder walls 401a and the battery cells 100.

In summary, the liquid cooling unit 400 of the present invention can achieve positioning and installation of the battery cells 100, and can also fully contact and cool each battery cell 100. Since the liquid cooling unit 400 has the through passages 401a-1, it can be used for accurately positioning the plurality of battery cells 100 at the time of initial assembly. When assembling the battery module, each electric core 100 can be temporarily fixed and arranged through the liquid cooling unit 400 to form an array with accurate arrangement, so that the accurate symmetry of the current-carrying sheets 200 at the two sides and the accurate alignment of each connecting sheet 203 and each electric core 100 are facilitated, and unnecessary special battery supports are not needed.

further, the new energy automobile battery module further comprises an air guide unit 500 arranged on one side of the protective shell 300, and the air guide unit comprises an air inlet pipeline 501 detachably connected to the air inlet F-1.

When a plurality of groups of battery modules are assembled and spliced, the side edges of the battery modules can be butted at the head position, so that the air outlet F-2 of the previous battery module can be opposite to and attached to the air inlet F-1 of the next battery module to form transverse through. Therefore, when cold air is injected into the air inlet F-1 of the first battery module, the cold air flow can sequentially flow through the insides of the protective shells 300 of the battery modules to carry out uniform air cooling, so that the air cooling efficiency can be improved, the cold air can be fully contacted with the battery cores 100 of the battery modules, and the air cooling effect is improved. It should be noted that: only the air inlet duct 501 needs to be installed at the air inlet F-1 of the first battery module, and the inner port edges of the air inlet duct 501 may be fixed to the first edge piece 301b and the second edge piece 302b of the first battery module by bolts.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.