CN217361728U - Battery pack - Google Patents

Abstract

The utility model provides a battery pack. The battery pack includes: the battery comprises a support plate, a plurality of battery cores and a plurality of battery cores, wherein the plurality of battery cores are arranged on the support plate and are arranged in a plurality of rows; the cooling device comprises a plurality of cooling plates, a plurality of cooling plates and a plurality of cooling channels, wherein at least one cooling plate in the plurality of cooling plates is positioned at the side part of the plurality of battery cells and is arranged between two adjacent rows of battery cells; an inflow pipe and an outflow pipe connected to the inlet end and the outlet end, respectively. The utility model provides a battery pack utilizes the heat radiating area on electric core surface, improves the radiating efficiency.

Description

Battery pack

Technical Field

The present invention relates to the field of batteries, and more particularly, to a battery assembly including a cooling plate.

Background

In an electrochemical energy storage system based on a secondary battery, the charge and discharge of a battery cell can generate a large amount of heat in the charge and discharge process due to the internal resistance of the battery. To ensure that the battery works within a reasonable temperature range, the battery core of the battery needs to be cooled.

At present, the common cooling mode of the battery has two basic cooling modes of air cooling and liquid cooling. The liquid cooling system has stronger heat dissipation capability, and the temperature difference of the battery core is relatively smaller in the same battery pack.

The liquid cooling system generally uses a heat conducting plate, a liquid flow passage is constructed in the liquid cooling system, and the battery is in direct contact with the outer surface of the heat conducting plate, so that the heat of the battery core is transferred to the heat conducting plate, and the liquid in the internal flow passage is transferred to the heat of the heat conducting plate, thereby realizing cooling and heat dissipation.

The cell of a conventional battery is roughly classified into a cylindrical shape and a square shape. The square battery has better space utilization rate, and is easier to manufacture a large-capacity energy storage battery cell, so the square battery cell is formed by stacking and connecting a plurality of single power supply unit batteries in parallel, and positive and negative lugs are led out from the top.

The liquid cooling system based on the square battery is usually contacted with a heat conducting plate at the bottom of the battery core for heat transfer. The size of the bottom surface is determined by the number of lamination layers and the width of the single lamination. The bottom surface is the smallest of the six surfaces of the cell due to the cell technology and the heat transfer characteristics of the single layer pole piece. In the process of contact heat conduction, heat flows from the battery core to the heat conducting plate from top to bottom, so that the battery core temperature distribution is uneven when the bottom surface is used as the heat conducting surface, a large temperature difference exists between the top and the bottom of the battery core, and the defects of influence on the service life of the battery core, poor heat dissipation effect and the like are overcome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery pack that cooling efficiency is higher.

One of the objects of the present invention is to provide a battery assembly having a long service life.

According to an aspect of the present disclosure, there is provided a battery pack including: the battery comprises a support plate, a plurality of battery cores and a plurality of battery cores, wherein the plurality of battery cores are arranged on the support plate and are arranged in a plurality of rows; the cooling device comprises a plurality of cooling plates, a plurality of cooling plates and a plurality of cooling channels, wherein at least one cooling plate in the plurality of cooling plates is positioned at the side part of the plurality of battery cells and is arranged between two adjacent rows of battery cells; and the inflow pipeline and the outflow pipeline are respectively connected to the inlet end and the outlet end of the cooling pipeline.

According to the embodiment of the disclosure, the battery cell may be a square battery cell, and the surface having the largest area of each row of the square battery cells may be coplanar and may be attached to the heat conducting plate.

According to an embodiment of the present disclosure, the battery pack may further include a tie bar that may pass through the mounting hole on the heat conducting plate and make the heat conducting plate perpendicular to the supporting plate heat conducting plate.

According to embodiments of the present disclosure, the cooling conduit may be arranged on the surface of the heat-conducting plate or in a curved through-hole on the heat-conducting plate.

According to an embodiment of the present disclosure, at least a portion of the cooling duct may be bent in an S-shape or a Z-shape.

According to an embodiment of the present disclosure, the cooling pipes disposed in the bent through-holes on the heat conductive plate may be exposed from both surfaces of the heat conductive plate opposite to each other, and may be flush with both surfaces of the heat conductive plate, respectively.

According to the embodiment of the present disclosure, the cooling ducts exposed from both surfaces of the heat conductive plate may be attached to two adjacent rows of cells.

According to an embodiment of the present disclosure, the cooling duct inlet end and the cooling duct outlet end of the cooling duct may be located on the same side of the cooling plate, and the cooling duct inlet end of the same cooling plate may be located below the cooling duct outlet end.

According to an embodiment of the present disclosure, an inflow tube inlet end of the inflow tube may be connected to the external coolant storage part, a plurality of inflow tube outlet ends of the inflow tube may be respectively connected to cooling tube inlet ends of the plurality of cooling tubes, a plurality of outflow tube inlet ends of the outflow tube may be respectively connected to cooling tube outlet ends of the plurality of cooling tubes, and an outflow tube outlet end of the outflow tube may be connected to the external coolant collection part.

The plurality of inflow conduit outlet ends of the inflow conduit may be located on the same side of the inflow conduit and the plurality of outflow conduit inlet ends of the outflow conduit may be located on the same side of the outflow conduit.

According to the utility model discloses a battery pack can have following beneficial technological effect:

1) the heat dissipation area on the surface of the battery core is fully utilized, and the heat dissipation efficiency is improved.

2) Effectively improve the temperature distribution in the electric core and reduce the temperature difference.

3) The practical service life of the battery pack is prolonged.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

fig. 1 is an exploded schematic view illustrating a battery assembly according to an embodiment of the present invention;

fig. 2 is an exploded schematic view illustrating a battery assembly according to an embodiment of the present invention;

fig. 3 is a schematic view showing a mounting manner of a cooling plate according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a single cooling plate according to the present invention;

fig. 5 is a schematic diagram illustrating a single cooling plate according to the present invention.

Description of the reference numerals:

100: a cooling plate; 101: a heat conducting plate; 102: a cooling duct; 103: cooling the outlet end of the pipeline; 104: an inlet end of a cooling pipeline; 110: a second mounting hole; 1021: a first bent portion; 1022: a second bent portion; 1023: a linear extension; 120: a first mounting hole; 130: a through hole; 200: a first end plate; 300: an electric core; 310: a first cell shorting bar; 320: a second cell shorting bar; 330: a pull rod; 500: a support plate; 600: an inflow conduit; 601: an inflow conduit outlet end; 602: an inflow conduit inlet end; 700: an outflow conduit; 701: an outlet end of the outflow conduit; 702: an outlet conduit inlet end; 800: a second end plate; 900: a fan.

Detailed Description

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.

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 or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present disclosure, unless otherwise specified, "a plurality" means two or more, and the recitations referring to the quantity "one or more" or "a plurality" or the like are a parallel recitations rather than a generic recitations, and the quantities recitationed in parallel are all positive integers.

In the description of the present disclosure, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The battery cell can be clamped between two cooling plates for cooling, or two rows of battery cells can be cooled by a single cooling plate. In addition, two surfaces with the largest area in the surfaces of the battery cores can be used for conducting heat, so that the contact heat conduction area can be greatly increased, the temperature difference between the hot end and the cold end is reduced, and the heat dissipation capacity is improved. Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is an exploded schematic view showing a battery pack according to an embodiment of the present invention, fig. 2 is an exploded schematic view showing a battery pack according to an embodiment of the present invention, fig. 3 is a schematic view showing an installation manner of a cooling plate according to an embodiment of the present invention, fig. 4 is a schematic view showing a single cooling plate according to the present invention, and fig. 5 is a schematic view showing a single cooling plate according to the present invention.

The utility model discloses a battery pack of embodiment includes backup pad 500, a plurality of electric core 300, a plurality of cooling plate 100. In addition, the battery assembly may further include a coolant inflow conduit 600 and an outflow conduit 700.

The plurality of battery cells 300 are disposed on the support plate 500 and arranged in rows (e.g., in a plurality of rows and/or a plurality of columns), for example, as shown in fig. 1, the plurality of battery cells 300 may be disposed in 4 rows and 8 columns, the number and arrangement of the battery cells 300 are not particularly limited, and may vary according to factors such as battery capacity and installation space.

Each of the battery cells 300 may have a block shape (i.e., a substantially rectangular parallelepiped shape), and the battery cells 300 may also have other shapes such as a cylindrical shape. When the battery cell 300 has a block shape, the surface of the battery cell 300 having the smallest area may be opposite to the support plate 500 and may be in contact with the support plate 500. When the battery cell 300 has other shapes such as a cylindrical shape, the bottom surface of the battery cell 300 may be a plane and may be fixedly mounted on the support plate 500. The surface of the battery cell 300 on which the positive and negative electrode tabs are disposed may be an upper surface, and may be substantially planar. Side surfaces or sides of the battery cells 300 may be perpendicular to the support plate 500, and the side surfaces or sides of the battery cells 300 may be curved.

As shown in fig. 2, the cells 300 in the same row may be separated from each other by the tie rods 330, and the cells 300 in the same row may be separated by the cooling plate 100.

As an example, the cells 300 in the same row may be separated by the tie rod 330, and the cells 300 in the same column may be separated by the cooling plate 100, that is, the cooling plate 100 may be installed transversely or longitudinally, and the tie rod 330 may be perpendicular to the heat conducting plate 101 of the cooling plate 100. The tie rod 330 may be made of an insulating material, but the present disclosure is not limited thereto.

In addition, the tie bar 330 may pass through a mounting hole on the heat conductive plate 101 and restrict the heat conductive plate 101 from being perpendicular to the support plate 500, and allow the heat conductive plate 101 to be movably adjusted in the extending direction of the tie bar 330.

As shown in fig. 1 to 3, the number of the tie bars 330 between the adjacent battery cells 300 may be plural, for example, the number of the tie bars 330 between two adjacent battery cells 300 on the same column may be two or more, the number of the tie bars 330 between the adjacent battery cells 300 is not limited, and the plurality of the tie bars 330 between the adjacent battery cells 300 may be arranged at different heights. A plurality of tie rods 330 arranged at different heights may pass through corresponding mounting holes or fixing holes on the cooling plate 100.

For example, in the state shown in fig. 5, the plurality of tie bars 330 disposed at the lower position may correspondingly pass through the plurality of first mounting holes 120 of the cooling plate 100, the plurality of tie bars 330 disposed at the upper position may correspondingly pass through the plurality of second mounting holes 110 of the cooling plate 100, centers of the plurality of first mounting holes 120 may be located on the same straight line, centers of the plurality of second mounting holes 110 may also be located on the same straight line, and each mounting hole may be a circular hole or an elliptical hole.

As shown in fig. 1-3, the tension rod 330 may extend generally linearly. The pulling rod 330 may also be partially bent. That is, the same tie rod 330 may pass through mounting holes at different heights on different cooling plates 100 or heat conductive plates 101.

The support plate 500 may be an insulation plate, and the support plate 500 may be located at the bottom of the battery cell 300 to insulate the battery cell 300 from the outside.

As shown in fig. 1 and 2, a first end plate 200 and a second end plate 800 may be respectively disposed at both ends of the battery module, the first end plate 200 and the second end plate 800 may each be disposed with a mounting hole through which the tie bar 330 passes, and the tie bar 330 may extend in a direction perpendicular to the first end plate 200 and the second end plate 800.

In addition, although not shown, the battery assembly of the present invention may further include a cover plate covering the upper surface of the battery cell 300, that is, the battery assembly of the present invention may have an external case, which may include the support plate 500, the first end plate 200, the second end plate 800, and the end plate.

As shown in fig. 1 to 3, at least one cooling plate 100 of the plurality of cooling plates 100 is located at a side portion of the plurality of battery cells 300 and is arranged between two adjacent rows of battery cells (e.g., two rows of battery cells and/or two columns of battery cells). The cooling plate 100 of the plurality of cooling plates 100 closest to the first end plate 200 may be located between the corresponding first end plate 200 and the battery cell 300, and the cooling plate 100 of the plurality of cooling plates 100 closest to the second end plate 800 may be located between the second end plate 800 and the battery cell 300.

The surface (i.e., the side surface) of the side of the battery cell 300 may be a portion perpendicular to the support plate 500, and the surface (i.e., the top surface or the upper surface) of the top of the battery cell 300 may be parallel to the support plate 500.

As shown in fig. 2, a cell shorting bar may be installed on the top of the battery cells 300, a first cell shorting bar 310 may be used to electrically connect two battery cells in the same row and in different columns, and a second cell shorting bar 320 may be used to electrically connect two battery cells in the same column and in different rows. For clarity, fig. 2 omits a portion of the cell shorting bar.

The cooling plate 100 is disposed at the side of the battery cell 300, and may improve the cooling efficiency of the battery cell 300. In addition, the temperature difference between the top and the bottom of the battery cell 300 can be reduced, and the actual service life of the battery cell 300 can be prolonged. The cooling plate 100 cools the lateral portion of the battery cell 300, so that the heat dissipation effects of the battery cell 300 at different positions can be balanced, and the problem that the actual service life of the battery cell 300 is short due to the fact that the temperature difference between the top and the bottom is too large is solved. In addition to the arrangement of the cooling plate 100 at the side portion of the battery cell 300, a cooling plate 100 may be further provided at the top or bottom of the battery cell 300, so as to further improve the heat dissipation efficiency.

As shown in fig. 1 and 4, each of the plurality of cooling plates 100 includes a heat conductive plate 101 and a cooling pipe 102 disposed on the heat conductive plate 101, the cooling pipe 102 including a cooling pipe inlet end 104 into which a cooling liquid (e.g., water) flows and a cooling pipe outlet end 103 from which the cooling liquid flows.

The heat-conducting plate 101 and the cooling pipe 102 may be formed using a material having a good heat-conducting property, and as an example, both the heat-conducting plate 101 and the cooling pipe 102 may be made of metal. The surfaces of the cells (e.g., square-shaped cells) of each row or column may be coplanar and may face the thermally conductive plate 101.

As an example, the surfaces of the cells (e.g., the block-shaped cells) of each row or column may be coplanar and may face the heat conductive plate 101. For example, the heat conductive plate 101 may be substantially parallel to and in contact with a surface having the largest area of each row or column of cells (e.g., square-shaped cells), and both surfaces of the heat conductive plate 101 may be in contact with or attached to coplanar surfaces of two rows of cells, respectively, as an example. The side surface of the battery cell 300 is in contact with the surface with the largest area or the heat dissipation area of the surface of the battery cell can be relatively fully utilized, so that the heat dissipation efficiency is improved.

In one example, an intermediate member such as an adhesive member or a heat conductive member having a superior heat conductive property may be further disposed between the heat conductive plate 101 and the side surface of the battery cell 300.

The heat conductive plate 101 may be perpendicular to the support plate 500 and may be arranged in parallel with the first and second end plates 200 and 800, and the cooling pipe 102 may be arranged on the surface of the heat conductive plate 101 or in a through-hole (e.g., a bent through-hole) on the heat conductive plate 101.

As shown in fig. 4, the cooling pipe 102 may be disposed in a through hole on the heat conductive plate 101, and the cooling pipe 102 may also be disposed directly on the surface of the heat conductive plate 101.

When the heat conductive plate 101 is provided with through-holes (e.g., curved through-holes), the cooling pipes 102 may be exposed from both surfaces of the heat conductive plate 101, and at least one of a first portion of the cooling pipes 102 exposed from one surface of the heat conductive plate 101 and a second portion of the cooling pipes 102 exposed from the other surface of the heat conductive plate 101, respectively, may be flush with, may protrude from, or may be recessed with respect to the corresponding surface of the heat conductive plate.

As an example, the cooling pipe 102 may also be installed in a heat conduction groove on the heat conduction plate 101, that is, the cooling pipe 102 may be exposed from only one surface of the heat conduction plate 101, and at this time, the cooling pipe 102 may also be regarded as being installed on the heat conduction plate 101.

Alternatively, the cooling ducts 102 in the bent through-holes on the heat conductive plate 101 may be exposed from both surfaces of the heat conductive plate 101 opposite to each other, and may be flush with both surfaces of the heat conductive plate 101, respectively, the cooling ducts 102 exposed from both surfaces of the heat conductive plate 101 being in contact with two adjacent rows or two columns of the battery cells 300.

Both sides of the cooling duct 102 may be in contact with or opposite to side surfaces or surfaces of the battery cell 300 having the largest area. This makes it possible to sufficiently cool the heat sink and improve heat dissipation efficiency.

When no through-hole is provided on the heat conductive plate 101, the cooling pipe 102 may be directly provided on the surface of the heat conductive plate 101, that is, only one side of the cooling pipe 102 may be in contact with or face the battery cell 300.

The cooling duct 102 may be a bent duct, that is, at least a portion of the cooling duct 102 is bent, and as shown in fig. 4 and 5, at least a portion of the cooling duct 102 may be bent in an S-shape. As an example, at least a portion of the cooling conduit 102 may be curved in a Z-shape or an annular shape (e.g., a circular or elliptical ring).

As shown in fig. 4 and 5, the heat conductive plate 101 may be a square plate. The cooling duct 102 may include a first bent part 1021 and a second bent part 1022 respectively located at both ends of the heat conductive plate 101, and a linear extending part 1023 located between the first bent part 1021 and the second bent part 1022, where the first bent part 1021 and the second bent part 1022 may be U-shaped. The linear extension 1023 may be parallel to the length direction of the heat conductive plate 101.

As an example, the linear extension of the cooling duct 102 may also be at a predetermined angle to the length direction of the heat conductive plate 101. For example, the linear extension of the cooling duct 102 may extend in a direction perpendicular to the diagonal line of the heat conductive plate 101.

Referring to fig. 5, as described above, the heat conductive plate 101 may include a plurality of mounting holes through which the tie rods 330 pass, and the mounting holes may maintain the heat conductive plate 101 or the entire cooling plate 100 fixed in a direction perpendicular to the support plate 500. The first and second mounting holes 120 and 110 may be respectively located between two adjacent linear extensions 1023.

As shown in fig. 1, 4, and 5, the cooling duct inlet end 104 of the cooling duct 102 and the cooling duct outlet end 103 of the cooling duct 102 may be located on the same side of the cooling plate 100. In the state shown in fig. 5, the cooling duct inlet end 104 of the cooling duct 102 and the cooling duct outlet end 103 of the cooling duct 102 may be located at an upper side of the cooling plate 100. In the state shown in fig. 1, the cooling duct inlet end 104 of the cooling duct 102 may be located below the cooling duct outlet end 103 of the cooling duct 102.

As an example, the cooling duct inlet end 104 of the cooling duct 102 and the cooling duct outlet end 103 of the cooling duct 102 may also be located on both sides of the cooling plate 100. For example, if the cooling duct inlet end 104 of the cooling duct 102 is located at the upper side of the cooling plate 100 in the state shown in fig. 5, the cooling duct outlet end 103 of the cooling duct 102 may be located at the lower side of the cooling plate 100; alternatively, the cooling duct inlet end 104 of the cooling duct 102 may be located at the lower side of the cooling plate 100, and the cooling duct outlet end 103 of the cooling duct 102 may be located at the upper side of the cooling plate 100; alternatively, the cooling duct inlet end 104 of the cooling duct 102 and the cooling duct outlet end 103 of the cooling duct 102 may be located on the upper side and the lower side of the cooling plate 100 and on the diagonal line of the cooling plate 100, respectively.

The cooling pipe inlet end 104 of the cooling pipe 102 and the cooling pipe outlet end 103 of the cooling pipe 102 may extend from one side of the heat-conductive plate 101 to the other side of the heat-conductive plate 101 (or from one surface of the heat-conductive plate 101 to the other surface of the heat-conductive plate 101 and protrude therefrom) through the through-hole 130 of the heat-conductive plate 101. The through-hole 130 may be separated from a receiving groove or a receiving hole of the heat-conducting plate 101 for receiving the cooling plate 100. The receiving groove or receiving hole for receiving the cooling plate 100 may be a receiving groove or receiving hole continuously formed in one piece.

When the cooling pipe 102 has a circular or elliptical (race track) shape, the cooling pipe inlet end 104 of the cooling pipe 102 may be an inner ring start end, and the cooling pipe outlet end 103 of the cooling pipe 102 may be an outer ring end. The cooling tube inlet end 104 of the cooling tube 102 may be an outer ring start end and the cooling tube outlet end 103 of the cooling tube 102 may be an inner ring termination.

As shown in fig. 1, the inflow conduit 600 and the outflow conduit 700 may be connected to the cooling conduit inlet end 104 and the cooling conduit outlet end 103, respectively.

The inflow tube inlet end 602 of the inflow tube 600 may be connected to an external coolant storage portion, and the plurality of inflow tube outlet ends 601 of the inflow tube 600 may be respectively connected to the cooling tube inlet ends 104 of the plurality of cooling tubes 102, for example, the plurality of inflow tube outlet ends 601 of the inflow tube 600 may be respectively welded to the cooling tube inlet ends 104 of the cooling tubes 102. As an example, the plurality of inflow conduit outlet ends 601 of the inflow conduit 600 may also be fixedly connected to the cooling conduit inlet end 104 of the cooling conduit 102 by a connector or the like.

The plurality of cooling plates 100 may share part of the cooling path, and the inflow path and the backflow path of the plurality of cooling plates 100 may be shared. The inflow pipe 600 may supply the cooling fluid in a single-in multiple-out manner. The inflow conduit 600 and the outflow conduit 700 may be connected to the cooling conduit inlet end 104 and the cooling conduit outlet end 103, respectively.

The general flow direction of the coolant flowing into the tubes 600 at the common portion may be parallel to the support plate 500. The general flow direction of the coolant flowing out of the duct 700 at the common portion may also be parallel to the support plate 500.

The plurality of outflow pipe inlet ends 702 of the outflow pipe 700 may be connected to the cooling pipe outlet ends 103 of the plurality of cooling pipes 102, respectively, and the outflow pipe outlet end 701 of the outflow pipe 700 may be connected to an external cooling liquid collecting part. The outflow conduit 700 may be configured to return the cooling fluid in a multiple-in, single-out manner.

The plurality of inflow conduit outlet ends 601 of the inflow conduit 600 may be located on the same side of the inflow conduit 600 and the plurality of outflow conduit inlet ends 702 of the outflow conduit 700 may be located on the same side of the outflow conduit 700.

In the state shown in fig. 1, the outflow pipe 700 may be located above the inflow pipe 600, that is, the cooling liquid supplied to the cooling pipe 102 flows from bottom to top.

For example, the cooling liquid flowing from the plurality of inflow conduit outlet ends 601 of the inflow conduit 600 to the cooling conduit inlet end 104 of the cooling conduit 102 flows in the cooling conduit 102 from bottom to top, and flows back to the outflow conduit 700 via the cooling conduit outlet end 103 of the cooling conduit 102 disposed at a higher position, and flows out to an external cooling liquid collection portion (e.g., an external water tank) via the outflow conduit 700.

The inflow conduit 600 and the outflow conduit 700 may be located on the same side of the battery assembly. In one example, the inflow conduit 600 and the outflow conduit 700 may be located on different sides of the battery assembly. The cooling paths of each cooling plate 100 may be independent of each other and do not include a common portion. The cooling ducts 102 provided on each cooling plate 100 may also have a plurality of inlet and outlet ends provided in pairs, that is, the cooling ducts 102 may not be integrally formed, but may include a plurality of portions independent of each other, each portion being independently cooled.

As shown in fig. 1, the battery module of the present invention may further include a fan 900, for example, which may be installed in the installation holes provided on the first end plate 200 and the second end plate 800. Two fans 900 may be mounted on the first and second end plates 200 and 800, respectively, and the fans mounted on the first and second end plates 200 and 800 may be disposed on the same side of the battery assembly as the inflow duct 600 and the outflow duct 700, thereby cooling the inflow duct 600 and the outflow duct 700.

In addition, although not shown, the battery module according to an embodiment of the present invention may further include a lug, a showerhead module, an insulation film, a battery management system, etc., which may be additionally installed or separately provided from the battery module, and which are not related to the gist of the cooling scheme of the present disclosure, and thus a detailed description thereof will be omitted.

According to the utility model discloses a battery pack make full use of the heat radiating area on electric core surface, improve the radiating efficiency.

According to the utility model discloses a battery pack effectively improves the temperature distribution in the electric core, reduces the temperature difference.

According to the utility model discloses a battery pack promotes battery pack's actual life.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims (e.g., various features of the invention may be combined to obtain new embodiments). Such combinations, modifications and improvements are intended to be within the scope of the invention.

Claims (10)

1. A battery assembly, comprising:

a support plate (500) for supporting the support plate,

a plurality of cells (300) disposed on the support plate (500) and arranged in a plurality of rows;

a plurality of cooling plates (100), at least one cooling plate (100) of the plurality of cooling plates (100) being located at the side of the plurality of battery cells (300) and being arranged between two adjacent rows of battery cells, each cooling plate (100) comprising a heat-conducting plate (101) and a cooling duct (102) provided on the heat-conducting plate (101), the cooling duct (102) comprising a cooling duct inlet end (104) for inflow of a cooling liquid and a cooling duct outlet end (103) for outflow of the cooling liquid;

an inflow duct (600) and an outflow duct (700) connected to the cooling duct inlet end (104) and the cooling duct outlet end (103), respectively.

2. The battery assembly of claim 1, wherein the cells (300) are block-shaped cells, the surfaces of each row of block-shaped cells having the largest area being coplanar and conforming to the thermally conductive plate (101).

3. The battery pack of claim 2, further comprising a tie rod (330), the tie rod (330) passing through a mounting hole on the thermally conductive plate (101) and making the thermally conductive plate (101) perpendicular to the support plate (500).

4. The battery pack according to claim 1, wherein the cooling duct (102) is arranged on a surface of the heat-conducting plate (101) or in a curved through-hole on the heat-conducting plate (101).

5. The battery assembly of claim 4, wherein at least a portion of the cooling duct (102) is bent in an S-shape or a Z-shape.

6. The battery pack according to claim 4 or 5, wherein the cooling duct (102) disposed in the curved through-hole on the heat conductive plate (101) is exposed from both surfaces of the heat conductive plate (101) opposite to each other and is flush with both surfaces of the heat conductive plate (101), respectively.

7. The battery pack according to claim 6, wherein the cooling ducts (102) exposed from both surfaces of the thermally conductive plate (101) are attached to two adjacent rows of cells.

8. The battery assembly according to claim 1, wherein a cooling duct inlet end (104) and a cooling duct outlet end (103) of the cooling duct (102) are located on the same side of the cooling plate (100), and the cooling duct inlet end (104) of the same cooling plate (100) is located below the cooling duct outlet end (103).

9. The battery module according to claim 8, wherein an inflow conduit inlet end (602) of the inflow conduit (600) is connected to an external coolant storage portion, a plurality of inflow conduit outlet ends (601) of the inflow conduit (600) are respectively connected to the cooling conduit inlet ends (104) of a plurality of cooling conduits (102), a plurality of outflow conduit inlet ends (702) of the outflow conduit (700) are respectively connected to the cooling conduit outlet ends (103) of a plurality of cooling conduits (102), and an outflow conduit outlet end (701) of the outflow conduit (700) is connected to an external coolant collection portion.

10. The battery assembly of claim 9, wherein the plurality of inlet conduit outlet ends (601) of the inlet conduit (600) are located on the same side of the inlet conduit (600) and the plurality of outlet conduit inlet ends (702) of the outlet conduit (700) are located on the same side of the outlet conduit (700).

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