Battery pack

Abstract

A battery pack is disclosed. A battery pack according to an embodiment of the present invention comprises: a base plate; the outer side wall protrudes upwards from the bottom plate; the battery array is positioned on the bottom plate and comprises a plurality of battery cells; an inner side wall covering a side portion of the battery array and extending longitudinally in a front-back direction; and an upper case covering a front side of the battery array and extending longitudinally in a left-right direction.

Description

Technical Field

[0001] The present disclosure relates to a battery pack.

[0002] This application claims priority to Korean Patent Application No. 10-2023-0120716, filed with the Korean Intellectual Property Office on September 11, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] The demand for portable electronic products such as laptop computers, cameras, and mobile phones has increased rapidly, and with the widespread use of robots and electric vehicles, many studies on high-performance rechargeable secondary batteries are underway.

[0004] Currently, commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, lithium secondary batteries, etc. Among them, lithium secondary batteries have almost no memory effect, and thus lithium secondary batteries are more concerned than nickel-based secondary batteries because they have the advantages of being rechargeable at any convenient time, having a very low self-discharge rate, and a high energy density.

[0005] Lithium secondary batteries mainly use lithium-based oxides and carbon materials as the positive electrode active material and the negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly including a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material, respectively, and an outer packaging material or a battery case that hermetically accommodates the electrode assembly and an electrolyte solution, wherein a separator is interposed between the positive electrode plate and the negative electrode plate.

[0006] Generally, according to the shape of the outer packaging material, lithium secondary batteries can be classified into can-type secondary batteries that contain the electrode assembly in a metal can and pouch-type secondary batteries that contain the electrode assembly in a bag of an aluminum laminate.

[0007] Recently, secondary batteries are widely used as a power source or for energy storage not only in small devices such as mobile electronic devices but also in medium or large devices such as electric vehicles or Energy Storage Systems (ESS). A plurality of secondary batteries can be electrically connected and accommodated in a module case to form a battery module. In addition, a plurality of battery modules can be connected to form a battery pack.

[0008] Since medium or large battery packs for electric vehicles contain a large number of battery cells and battery modules to increase output and / or capacity, the weight may increase significantly. Therefore, a structure is needed to increase the stiffness and energy density of the battery pack. In addition, a structure is needed to reduce the weight of the battery pack. Summary of the Invention

[0009] Technical Problem

[0010] The object of the present disclosure is to solve these problems and other problems.

[0011] Another object of the present disclosure is to provide a battery pack with improved assembly efficiency.

[0012] Still another object of the present disclosure is to provide a battery pack with improved energy density.

[0013] Yet another object of the present disclosure is to provide a battery pack with reduced weight.

[0014] Technical Solution

[0015] To achieve the above object, a battery pack according to an embodiment of the present disclosure includes: a bottom plate; an outer sidewall protruding upward from the bottom plate; a battery array located on the bottom plate and including a plurality of battery cells; an inner sidewall covering the side portion of the battery array and extending in the front-rear direction; and an upper housing covering the front side of the battery array and extending in the left-right direction.

[0016] In addition, the battery pack may further include a resin filling the battery array.

[0017] In addition, the battery pack may further include an insulating member extending across the battery array.

[0018] In addition, the battery pack may further include a cooling unit extending across the battery array.

[0019] In addition, the upper housing may include a groove, and the cooling unit may be inserted into the groove.

[0020] In addition, the cooling unit may include: a cooling pipe extending across the battery array; and a head provided on the front side of the cooling pipe, and the head may pass through the groove.

[0021] In addition, the groove may be open downward.

[0022] In addition, the battery pack may further include a lower housing located below the upper housing and coupled to the upper housing.

[0023] In addition, the battery pack may further include a fastening member configured to fasten the lower housing to the upper housing.

[0024] In addition, the lower housing may cover the bottom of the groove.

[0025] In addition, the upper housing may include protrusions on the lower surface, and the lower housing may include grooves into which the protrusions are inserted.

[0026] In addition, the lower housing may extend rearward and cover at least a portion of the battery array.

[0027] A vehicle according to one aspect of the present disclosure includes the battery pack of the present disclosure.

[0028] Beneficial Effects

[0029] According to at least one of the embodiments of the present disclosure, the stiffness of the battery pack can be improved.

[0030] According to at least one of the embodiments of the present disclosure, the energy density of the battery pack can be improved.

[0031] According to at least one of the embodiments of the present disclosure, the weight of the battery pack can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings illustrate exemplary embodiments of the present disclosure and, together with the following detailed description, are used to provide a better understanding of the technical aspects of the present disclosure. Therefore, the present disclosure should not be construed as being limited to the drawings.

[0033] Figure 1 is a perspective view showing a battery pack according to an embodiment of the present disclosure.

[0034] Figure 2 is an exploded view showing some components of a battery pack according to an embodiment of the present disclosure.

[0035] Figure 3 is a view showing the inner wall of a battery pack according to an embodiment of the present disclosure.

[0036] Figure 4 is a view showing the inner wall and battery cells of a battery pack according to an embodiment of the present disclosure.

[0037] Figure 5 is an exploded view showing some components of a battery array of a battery pack according to an embodiment of the present disclosure.

[0038] Figure 6 is a perspective view showing a battery array of a battery pack according to an embodiment of the present disclosure.

[0039] Figure 7 is Figure 6 an enlarged view of part A in

[0040] Figure 8 is a cross-sectional view taken along line B-B' of Figure 6

[0041] Figure 9It is taken along the line C-C'. Figure 6 Cross-sectional view.

[0042] Figure 10 and Figure 11 are diagrams showing the upper housing of a battery pack according to an embodiment of the present disclosure.

[0043] Figure 12 and Figure 13 are diagrams showing the battery array and the upper housing of a battery pack according to an embodiment of the present disclosure.

[0044] Figure 14 It is taken along the line D-D'. Figure 13 Cross-sectional view.

[0045] Figure 15 are diagrams showing some components of a battery pack according to an embodiment of the present disclosure when viewed from the bottom.

[0046] Figure 16 is a perspective view of a battery pack according to an embodiment of the present disclosure when viewed from the rear.

[0047] Figure 17 are diagrams showing some components of a battery pack according to an embodiment of the present disclosure when viewed from the bottom.

[0048] Figure 18 and Figure 19 are diagrams showing the battery array and the lower housing of a battery pack according to an embodiment of the present disclosure.

[0049] Figure 20 and Figure 21 are diagrams showing some component diagrams of a battery pack according to an embodiment of the present disclosure when viewed from the bottom.

[0050] Figure 22 is a perspective view of some components of a battery pack according to an embodiment of the present disclosure.

[0051] Figure 23 It is taken along the line G-G'. Figure 22 Cross-sectional view.

[0052] Figure 24 is Figure 23 An enlarged view of part H in.

[0053] Figure 25 is Figure 23 An enlarged view of part I in.

[0054] Figure 26 is a diagram showing the battery array of a battery pack according to an embodiment of the present disclosure. Detailed implementation

[0055] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms or words used in the specification and the appended claims should not be construed as limited to the general meaning and dictionary meaning, but should be interpreted based on the principle that the inventor is allowed to appropriately define the terms for the best explanation, based on the meanings and concepts corresponding to the technical aspects of the present disclosure.

[0056] Therefore, the descriptions provided herein and the illustrations in the drawings are provided to describe some exemplary embodiments of the present disclosure, and are not intended to completely describe the technical aspects of the present disclosure. Thus, it should be understood that various other equivalents and modifications can be made thereto when submitting a patent application.

[0057] Figure 1 is a perspective view showing a battery pack according to an embodiment of the present disclosure. Figure 2 is an exploded view showing some components of a battery pack according to an embodiment of the present disclosure. Refer to Figure 1 and Figure 2 , a battery pack according to an embodiment of the present disclosure may include a bottom plate 100, an outer sidewall 200, a battery array 300, an inner sidewall 330, and an upper housing 320.

[0058] The bottom plate 100 may have a flat plate shape. The bottom plate 100 may be generally rectangular in shape.

[0059] The outer sidewall 200 may protrude upward from the bottom plate 100. The outer sidewall 200 may be fastened, coupled, fixed, or attached to the upper surface of the bottom plate 100. The outer sidewall 200 and the bottom plate 100 may form an internal space.

[0060] The battery array 300 may be accommodated in the internal space. The battery array 300 may include a plurality of battery cells 310. The plurality of battery cells 310 may be arranged to form an array. The battery array 300 may be located on the bottom plate 100. In this case, the battery cell 310 may refer to a secondary battery. In addition, the battery cell 310 may be a secondary battery having a cylindrical shape. The battery array 300 may have a rectangular parallelepiped shape.

[0061] The inner sidewall 330 may include a wall body 331 extending in the X-axis direction or the front-rear direction. The inner sidewall 330 may cover one side of the battery array 300. The inner sidewall 330 may cover at least some of the outermost battery cells 310 of the battery array 300. The inner sidewall 330 may include a pair of inner sidewalls. At least some of the plurality of battery cells 310 may be fixed to the inner sidewall 330. The inner sidewall 330 may be fastened, coupled, fixed, or attached to the bottom plate 100 or the outer sidewall 200. The inner sidewall 330 may be located between the plurality of battery cells 310 and the outer sidewall 200.

[0062] The upper housing 320 may include a main body 321. The main body 321 may extend in the Y-axis direction or the left-right direction. The upper housing 320 may include a pair of upper housings. The upper housing 320 may cover each of the front side and the rear side of the battery array 300. The upper housing 320 may cover at least some of the outermost battery cells 310 of the battery array 300. At least some of the plurality of battery cells 310 may be fixed to the upper housing 320. The upper housing 320 may be fastened, coupled, fixed, or attached to the bottom plate 100 or the outer sidewall 200. The upper housing 320 may be located between the plurality of battery cells 310 and the outer sidewall 200.

[0063] A pair of inner sidewalls 330 and a pair of upper housings 320 may cover the outer periphery of the battery array 300.

[0064] With this configuration of the present disclosure, the battery array 300 may be stably supported and fixed. The inner sidewalls 330 and the upper housings 320 may improve the stiffness and alignment of the battery array 300. Accordingly, the stiffness and safety of the entire battery pack may be improved.

[0065] A plurality of battery cells 310 may be accommodated. The inner sidewalls 330 may stably support the plurality of battery cells 310. Accordingly, the stiffness of the battery pack may be improved.

[0066] Refer to Figure 1 and Figure 2 , a battery pack according to an embodiment of the present disclosure may include a bus assembly 400 and a battery pack cover 500. The battery pack cover 500 may cover the inner space of the battery pack. The battery pack cover 500 may have a plate-like shape. The battery pack cover 500 may have a shape similar to that of the bottom plate 100. The battery pack cover 500 may be fastened, coupled, fixed, or attached to the outer sidewall 200.

[0067] The bus assembly 400 may be located between the battery array 300 and the battery pack cover 500. The bus assembly 400 may be physically connected to the tops of the plurality of battery cells 310. In addition, the bus assembly 400 may be electrically connected to the plurality of battery cells 310.

[0068] An exhaust device 600 may be provided on the outer surface of the outer sidewall 200. When the pressure inside the battery pack rises, the exhaust device 600 may exhaust gas.

[0069] Figure 3 is a view showing an inner sidewall 330 of a battery pack according to an embodiment of the present disclosure. Figure 4 is a view showing an inner sidewall 330 and battery cells 310 of a battery pack according to an embodiment of the present disclosure. Refer to Figure 3 and Figure 4, at least some of the plurality of battery cells 310 of the battery pack according to an embodiment of the present disclosure may be fixed to the inner sidewall 330. The inner sidewall 330 may include wall heads 332 at both ends in the X-axis direction. The wall heads 332 may have grooves 337. The inner sidewall 330 may include an inwardly protruding bottom rib 333. In addition, the inner sidewall 330 may include an inwardly protruding top rib 334. The top rib 334 may be at a higher position than the bottom rib 333. The plurality of battery cells 310 may be fixed between the bottom rib 333 and the top rib 334. The inner sidewall 330 may include a curved portion 336 formed on the inner side. The curved portion 336 may be curved along the side of the battery cell 310. The curved portion 336 may support the side of the battery cell 310. The inner sidewall 330 may include a plurality of inwardly protruding partition portions 335. Each partition portion 335 may protrude between the plurality of battery cells 310.

[0070] With this configuration of the present disclosure, the plurality of battery cells 310 may be stably fixed and supported by the inner sidewall 330. Therefore, the rigidity of the battery pack may be improved.

[0071] Figure 5 is an exploded view showing some components of a battery array 300 of a battery pack according to an embodiment of the present disclosure. Figure 6 is a perspective view showing a battery array 300 of a battery pack according to an embodiment of the present disclosure. Figure 7 is Figure 6 an enlarged view of part A in Figure 8 is a cross-sectional view taken along line B-B' of Figure 6 Figure 9 is a cross-sectional view taken along line C-C' of Figure 6

[0072] Referring to Figures 5 to 9 , the battery array 300 according to an embodiment of the present disclosure may include a cooling unit 340. The cooling unit 340 may extend in the X-axis direction or the front-rear direction. The cooling unit 340 may extend across the battery array 300. In addition, the cooling unit 340 may separate the plurality of battery cells 310. The cooling unit 340 may contact the plurality of battery cells 310. The cooling unit 340 may include a plurality of cooling units. A cooling liquid or a cooling gas may flow through the cooling unit 340. The cooling unit 340 may include a head 341 and a first cooling tube 342. The first cooling tube 342 may extend in the X-axis direction or the front-rear direction. The head 341 may be provided on the front side of the first cooling tube 342. A tail 343 may be provided on the rear side of the first cooling tube 342. The first cooling tube 342 may include a flexible material. The first cooling tube 342 may be curved along the side of the battery cell 310. The first cooling tube 342 may include a plurality of flow channels. The cooling liquid may flow through the first cooling tube 342. The cooling liquid may flow and circulate through the head 341, the first cooling tube 342, and the tail 343.​​

[0073] With this configuration of the present disclosure, the cooling effect of the battery array 300 can be increased. The cooling unit 340 can effectively cool the battery cells 310 by increasing the contact area with the battery cells 310.

[0074] In addition, with this configuration of the present disclosure, the weight of the battery array 300 can be reduced. Since the battery array 300 includes the lightweight cooling unit 340, the energy density of the battery pack can be improved.

[0075] Referring to Figures 5 to 9 , the battery array 300 according to an embodiment of the present disclosure may include an insulating member 350. The insulating member 350 may extend in the X-axis direction or the front-rear direction. The insulating member 350 may extend across the battery array 300. In addition, the insulating member 350 may separate a plurality of battery cells 310. The insulating member 350 may contact a plurality of battery cells 310. The insulating member 350 may include a plurality of insulating members. The insulating member 350 may include a flexible material. The insulating member 350 may electrically insulate a plurality of battery cells 310. In addition, the insulating member 350 may be made of a flame-retardant material. For example, the insulating member 350 may include a polycarbonate (PC) sheet, ceramic wool.

[0076] The cooling unit 340 and the insulating member 350 may be arranged in an alternating manner. A pair of inner sidewalls 330 may be provided on the outermost sides of the battery array 300.

[0077] With this configuration of the present disclosure, the electrical safety of the battery array 300 can be improved.

[0078] In addition, with this configuration of the present disclosure, the weight of the battery array 300 can be reduced. Since the battery array 300 includes the lightweight insulating member 350, the energy density of the battery pack can be improved.

[0079] Referring to Figures 5 to 9 , the battery array 300 according to an embodiment of the present disclosure may be filled with a resin 700. The resin 700 may join, fix, or attach the components of the battery array 300 together.

[0080] With this configuration of the present disclosure, the stiffness of the battery array 300 can be improved.

[0081] In addition, with this configuration of the present disclosure, since the components of the battery array 300 are joined by the resin 700 instead of a heavier fastening structure or fastening member S, the weight of the battery array 300 can be reduced. Therefore, the energy density of the battery pack can be improved.

[0082] Figure 10 and Figure 11FIG. is a view showing an upper housing 320 of a battery pack according to an embodiment of the present disclosure. Figure 12 and Figure 13 FIG. is a view showing a battery array 300 and an upper housing 320 of a battery pack according to an embodiment of the present disclosure.

[0083] Figure 14 is a cross-sectional view taken along line D-D'. Figure 13 of Figure 15 FIG. is a view showing some components of a battery pack according to an embodiment of the present disclosure when viewed from the bottom. Figure 16 FIG. is a perspective view of a battery pack according to an embodiment of the present disclosure when viewed from the rear. Figure 17 FIG. is a view showing some components of a battery pack according to an embodiment of the present disclosure when viewed from the bottom.

[0084] Referring to Figures 10 to 17 , the upper housing 320 of a battery pack according to an embodiment of the present disclosure may include a groove 324. The groove 324 may include a plurality of grooves. The groove 324 may be arranged in the Y-axis direction. The cooling unit 340 may be inserted, coupled, mounted, or fixed to the groove 324.

[0085] With this configuration of the present disclosure, the cooling unit 340 may be stably positioned and fixed.

[0086] Referring to Figures 10 to 17 , the cooling unit 340 of a battery pack according to an embodiment of the present disclosure may pass through the groove 324 of the upper housing 320. The head 341 may be inserted into the groove 324 of the front-side upper housing 320. The tail 343 may be inserted into the groove 324 of the rear-side upper housing 320.

[0087] With this configuration of the present disclosure, the cooling unit 340 may be stably positioned and fixed.

[0088] Referring to Figures 10 to 17 , the groove 324 of the upper housing 320 of a battery pack according to an embodiment of the present disclosure may be open downward. In addition, the groove 324 may extend in the Z-axis direction. When the upper housing 320 moves in the -Z-axis direction or the downward direction, the upper housing 320 may be assembled with the cooling unit 340. When the front-side upper housing 320 moves in the -Z-axis direction or the downward direction, the front-side upper housing 320 may be assembled with the head 341. In addition, when the rear-side upper housing 320 moves in the -Z-axis direction or the downward direction, the rear-side upper housing 320 may be assembled with the tail 343.

[0089] With this configuration of the present disclosure, the assembly efficiency of the battery pack may be improved.

[0090] Referring to Figures 10 to 17, the upper housing 320 of the battery pack according to an embodiment of the present disclosure may include a first bending portion 322 and a second bending portion 323. The first bending portion 322 and the second bending portion 323 may be provided at the rear surface of the upper housing 320 at the front side. In addition, the first bending portion 322 and the second bending portion 323 may be provided at the front surface of the upper housing 320 at the rear side. The first bending portion 322 and the second bending portion 323 may be bent along the side portion of the battery cell 310. Accordingly, the upper housing 320 may stably support the battery array 300.

[0091] Figure 18 and Figure 19 is a view showing the battery array 300 and the lower housing 326 according to an embodiment of the present disclosure. Figure 20 and Figure 21 is a view showing some components of the battery pack according to an embodiment of the present disclosure when viewed from the bottom. Referring to Figures 18 to 21 , the battery pack according to an embodiment of the present disclosure may include a lower housing 326 that is located below the upper housing 320 and is coupled to the upper housing 320. The lower housing 326 may be coupled, fastened, fixed, or attached to the lower surface of the upper housing 320. The lower housing 326 may extend along the upper housing 320. Alternatively, the lower housing 326 may extend in the left-right direction or the Y-axis direction. The lower housing 326 may include a pair of lower housings. The lower housing 326 at the front side may be coupled to the upper housing 320 at the front side. The lower housing 326 at the rear side may be coupled to the upper housing 320 at the rear side.

[0092] With this configuration of the present disclosure, since the upper housing 320 and the lower housing 326 are coupled to each other, the cooling unit 340 may be stably positioned and fixed. Accordingly, the stiffness of the battery array 300 may be improved.

[0093] Referring to Figures 18 to 21 , the battery pack according to an embodiment of the present disclosure may include a fastening member S for fastening the lower housing 326 to the upper housing 320. The fastening member S may extend in the up-down direction or the Z-axis direction. The fastening member S may include a plurality of fastening members. The fastening member S may be arranged in the left-right direction or the Y-axis direction. The fastening member S may pass through the lower housing 326. At least a part of the fastening member S may be inserted into the upper housing 320.

[0094] With this configuration of the present disclosure, the assembly efficiency of the battery array 300 may be improved.

[0095] Referring to Figures 18 to 21 , the lower housing 326 of the battery pack according to an embodiment of the present disclosure may cover the bottom of the groove 324. The lower housing 326 at the front side may cover the bottom of the groove 324 and the bottom of the head 341. In addition, the lower housing 326 at the rear side may cover the bottom of the groove 324 and the bottom of the tail 343.

[0096] With this configuration of the present disclosure, since the upper housing 320 and the lower housing 326 are coupled to each other, the cooling unit 340 can be stably positioned and fixed. Accordingly, the stiffness of the battery array 300 can be improved.

[0097] Figure 22 is a perspective view showing some components of a battery pack according to an embodiment of the present disclosure. Figure 23 is a cross-sectional view taken along line G-G'. Figure 22 of Figure 24 is Figure 23 an enlarged view of portion H in Figure 25 is Figure 23 an enlarged view of portion I in

[0098] Referring to Figures 22 to 25 , the upper housing 320 of the battery pack according to an embodiment of the present disclosure may include a protrusion 325 on the lower surface. In addition, the lower housing 326 may include a groove 327 into which the protrusion 325 is inserted.

[0099] Conversely, the lower housing 326 may include a protrusion on the upper surface, and the upper housing 320 may include a groove into which the protrusion is inserted.

[0100] In addition, components such as gaskets, glue, or Cured In Place Gaskets (CIPGs) may be further included between the upper housing 320 and the lower housing 326.

[0101] With this configuration of the present disclosure, the sealing between the upper housing 320 and the lower housing 326 can be improved. Accordingly, it is possible to easily control the discharge of gases or combustible particles from the battery array 300.

[0102] Referring to Figures 22 to 25 , the lower housing 326 of the battery pack according to an embodiment of the present disclosure may extend inward and cover at least a part of the battery array 300. The lower housing 326 at the front side may extend backward and cover at least a part of the battery array 300 or the battery cells 310. Alternatively, the lower housing 326 at the front side may extend backward and support at least a part of the battery array 300 or the battery cells 310. The lower housing 326 at the rear side may extend forward and cover at least a part of the battery array 300 or the battery cells 310. Alternatively, the lower housing 326 at the rear side may extend forward and support at least a part of the battery array 300 or the battery cells 310.

[0103] With this configuration of the present disclosure, the battery array 300 can be spaced apart from the bottom plate 100. In addition, the plurality of battery cells 310 can be spaced apart from the bottom plate 100. Therefore, the plurality of battery cells 310 can be more reliably electrically insulated from the bottom plate 100. Thus, the electrical safety of the battery pack can be improved.

[0104] In addition, with this configuration of the present disclosure, an exhaust space can be formed below the battery array 300. The space between the battery array 300 and the bottom plate 100 can be used as the exhaust space. Thus, the thermal safety of the battery pack can be improved.

[0105] Figure 26 FIG. is a diagram showing a battery array 300 of a battery pack according to an embodiment of the present disclosure. Refer to Figure 26 , the battery array 300 of the battery pack according to an embodiment of the present disclosure may include a plurality of battery cells 310, an upper housing 320, a lower housing 326, and an inner side wall 330. In addition, the battery array 300 may further include a second cooling pipe 344. The second cooling pipe 344 may connect a plurality of heads 341. And the second cooling pipe 344 may communicate with the plurality of heads 341. The cooling liquid can be supplied to each head 341 through the second cooling pipe 344. In addition, the cooling liquid flowing out of each head 341 can leave the battery pack through the second cooling pipe 344.

[0106] A vehicle according to the present disclosure may include the above-described battery pack according to the present disclosure. The battery pack according to the present disclosure can be used in vehicle applications, for example, in electric vehicles or hybrid vehicles. In addition, in addition to the battery pack, the vehicle according to the present disclosure may further include various other components included in the vehicle. For example, the vehicle according to the present disclosure may further include a vehicle body, an electric motor, a controller such as an electronic control unit (ECU), etc.

[0107] Terms indicating directions such as up, down, left, right, front, back, inside, and outside are used for convenience of description, but it is obvious to those skilled in the art that these terms may change depending on the components mentioned and the position of the observer.

[0108] Although the present disclosure has been described through a limited number of embodiments and drawings, the present disclosure is not limited thereto, and it is obvious to those skilled in the art that various changes and modifications can be made within the technical scope of the present disclosure and the appended claims and their equivalents.

Claims

1. A battery pack, comprising: Base plate; an outer side wall, the outer side wall protruding upward from the bottom plate; A battery array, the battery array is located on the bottom plate and includes a plurality of battery cells; An inner side wall, the inner side wall covers the side of the battery array and extends in the front-to-rear direction; as well as An upper casing covers the front side of the battery array and extends in the left-right direction.

2. The battery pack according to claim 1, further comprising: A resin is provided to fill the battery array.

3. The battery pack according to claim 1, further comprising: An insulating member extends across the battery array.

4. The battery pack according to claim 1, further comprising: A cooling unit extends across the battery array.

5. The battery pack according to claim 4, in, The upper housing includes a slot, and Wherein, the cooling unit is inserted into the groove.

6. The battery pack according to claim 5, in, The cooling unit comprises: a cooling tube extending across the battery array; and a head, the head being arranged at the front side of the cooling pipe, and Wherein, the head passes through the slot.

7. The battery pack according to claim 5, in, The groove is open downwardly.

8. The battery pack according to claim 7, further comprising: A lower shell is located below the upper shell and is connected to the upper shell.

9. The battery pack according to claim 8, further comprising: A fastening member is configured to fasten the lower housing to the upper housing.

10. The battery pack according to claim 8, in, The lower housing covers the bottom of the tank.

11. The battery pack according to claim 8, in, The upper housing further includes a protrusion on the lower surface, and Wherein, the lower shell includes a groove, and the protrusion is inserted into the groove.

12. The battery pack according to claim 8, in, The lower housing extends rearward and covers at least a portion of the battery array.

13. A vehicle comprising the battery pack according to any one of claims 1 to 12.

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