Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, the battery module comprises a battery assembly and a supporting assembly, the battery assembly comprises at least one battery pack, the battery pack comprises a plurality of battery cells arranged along a first direction, each battery cell extends along a second direction, and an included angle is formed between the first direction and the second direction; the supporting assembly comprises two brackets which are oppositely arranged, and two ends of each battery cell are respectively supported on the two brackets; wherein fixing holes are formed in the two ends, in the first direction, of at least one support, fixing sleeves are embedded in the fixing holes, and the fixing sleeves are arranged to be arranged on the fasteners in a sleeving mode and fixedly connected with the fasteners. The fixing holes are formed in the two ends, in the first direction, of at least one support, the fixing sleeves are embedded in the fixing holes, the fasteners can be inserted into the fixing sleeves, the fixing sleeves are arranged on the fasteners in a sleeving mode and fixedly connected with the fasteners, the fasteners are connected with the battery box, and then the supports and the battery box can be rapidly fixed; the operation is very convenient.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module and a battery pack. Background Art

[0002] To reduce the height of a battery pack, a horizontally placed battery module can be used. This means that the length of the columnar cells in the battery module is perpendicular to the height of the battery module. Two brackets are used to support the ends of the cells, and the brackets are then fixed to the battery box. In related art, the fixing of the battery module brackets to the battery box is relatively complex, affecting the assembly efficiency of the battery pack. Utility Model Content

[0003] The embodiments of the present application provide a battery module and a battery pack, which can improve the problem that the fixation of the battery module and the battery box is relatively complicated, thereby affecting the assembly efficiency of the battery pack.

[0004] In a first aspect, an embodiment of the present application provides a battery module, comprising:

[0005] A battery assembly comprising at least one battery pack, wherein the battery pack comprises a plurality of battery cells arranged along a first direction, each of the battery cells extending along a second direction, and the first direction and the second direction forming an angle;

[0006] A support assembly comprising two brackets arranged opposite to each other, with both ends of each battery cell being supported by the two brackets respectively;

[0007] Wherein, at least one of the brackets is provided with fixing holes at both ends along the first direction, a fixing sleeve is embedded in the fixing hole, and the fixing sleeve is configured to be sleeved on the fastener and fixedly connected to the fastener.

[0008] In some embodiments, fixing portions are protruded from both ends of the bracket along the first direction, and the fixing hole passes through the fixing portions.

[0009] In one embodiment, the fixing hole passes through the fixing portion along a height direction of the battery module, and the first direction and the second direction respectively form an angle with the height direction.

[0010] In one embodiment, the fixing holes are provided at both ends of the two brackets along the first direction.

[0011] In one embodiment, a bottom surface of at least one of the brackets is provided with an adhesive member.

[0012] In one embodiment, a glue groove is formed on the bottom surface of the bracket, and the adhesive member is at least partially accommodated in the glue groove.

[0013] In one embodiment, the adhesive member extends along the first direction.

[0014] In one embodiment, a receiving portion is provided on a side of the bracket facing the battery cell, the receiving portion is located at the bottom of the battery cell assembly, the receiving portion includes a receiving groove for receiving part of the battery cell, and the adhesive is provided on a surface of the receiving portion facing away from the battery cell assembly.

[0015] In one embodiment, a connection hole is further formed at at least one end of the bracket along the first direction, a conductive member is provided in the connection hole, and the conductive member is electrically connected to the battery core.

[0016] In a second aspect, an embodiment of the present application further provides a battery pack, comprising:

[0017] A battery box, including a receiving cavity;

[0018] A battery module, the battery module is the battery module as described above, the battery module is installed in the accommodating cavity, the battery module includes a battery assembly and a support assembly, the battery assembly includes at least one battery pack, the battery pack includes a plurality of battery cells arranged along a first direction, each of the battery cells extends along a second direction, and the first direction and the second direction form an angle; the support assembly includes two brackets arranged opposite to each other, and the two ends of each of the battery cells are respectively supported by the two brackets; wherein, at least one of the brackets is provided with a fixing hole at one end along the first direction, a fixing sleeve is embedded in the fixing hole, and the fixing sleeve is configured to be sleeved on the fastener and fixedly connected to the fastener.

[0019] Beneficial effects of the embodiments of the present application:

[0020] In an embodiment of the present application, fixing holes are opened at both ends of at least one bracket along the first direction, and fixing sleeves are embedded in the fixing holes. When the battery module is connected to the battery box, the fastener can be inserted into the fixing sleeve, so that the fixing sleeve is sleeved on the fastener and fixedly connected to the fastener, and the fastener is connected to the battery box, so that the bracket and the battery box can be quickly fixed, and the operation is very convenient.

[0021] At the same time, it can also avoid the fastener being directly connected to the bracket, which would cause the fastener to apply excessive fastening force to the bracket, resulting in deformation of the bracket, or even failure of the fastener to fasten the bracket, which is beneficial to improving the installation stability of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those skilled in the art without creative effort based on these drawings also belong to the protection scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not intended to limit the present application. In the present application, the positional words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0023] Figure 1 is a structural schematic diagram of one embodiment of the battery module provided by the embodiments of the present application;

[0024] Figure 2 is an exploded structural schematic diagram of one embodiment of the battery module provided by the embodiments of the present application;

[0025] Figure 3 is another angle view of the battery module provided by the embodiments of the present application;

[0026] Figure 4 is a structural schematic diagram of one embodiment of the bracket provided by the embodiments of the present application;

[0027] Figure 5 is Figure 4 is an enlarged view of A in FIG.

[0028] Battery module 100; battery assembly 110; battery pack 111; battery cell 1111; pole 1112; support assembly 120; bracket 121; connecting hole 1210; positioning groove 1211; avoiding hole 1212; glue containing groove 1213; connecting glue 1214; fixing part 1215; fixing hole 1216; glue groove 1217; containing part 1218; containing groove 1219; fixing sleeve 130; adhesive 140; conductive part 150; busbar 160; connecting part 161; insulating sheet 170; first direction X; second direction Y; height direction Z. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely in the following description with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not intended to limit the present application. In the present application, the positional words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0030] The embodiments of the present application provide a battery module and a battery pack.

[0031] Figure 1 A schematic structural diagram of an embodiment of a battery module provided in an embodiment of the present application. Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the battery module provided in the embodiment of the present application. Figure 3 This is another angle view of the battery module provided in an embodiment of the present application. Figure 4 It is a structural schematic diagram of an embodiment of the bracket provided in the embodiment of the present application. Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0032] like Figure 1 and Figure 2 As shown, the battery module 100 includes a battery assembly 110 and a support assembly 120. The battery assembly 110 includes at least one battery pack 111. The battery pack 111 includes a plurality of battery cells 1111 arranged along a first direction X. Each battery cell 1111 extends along a second direction Y, and the first direction X and the second direction Y form an angle. The support assembly 120 includes two brackets 121 arranged opposite each other, and each battery cell 1111 is supported at both ends by the two brackets 121.

[0033] By extending the multiple battery cells 1111 of the battery module 100 along the second direction Y, that is, placing the multiple battery cells 1111 of the battery module 100 horizontally so that the length direction of the battery cells 1111 forms an angle with the height direction Z of the battery module 100, it is beneficial to reduce the overall height of the battery module 100.

[0034] It should be noted that the angle formed by the first direction X and the second direction Y may be a right angle or an acute angle. The angle formed by the first direction X and the second direction Y with the height direction Z may be a right angle or an acute angle.

[0035] A positioning groove 1211 can be opened on the side of the bracket 121 facing the battery cell 1111 , and the end of the battery cell 1111 close to the corresponding bracket 121 is inserted into the positioning groove 1211 , so that the end of the battery cell 1111 close to the corresponding bracket 121 is supported on the bracket 121 .

[0036] like Figure 2 、 Figure 4 and Figure 5 As shown, a relief hole 1212 can be formed on the bottom surface of the positioning groove 1211, and the relief hole 1212 penetrates the bracket 121 along the second direction Y. The relief hole 1212 is used to avoid the pole 1112 of the battery cell 1111 close to the end of the corresponding bracket 121, and when the battery cell 1111 is supported on the bracket 121 close to the end of the corresponding bracket 121, the pole 1112 of the battery cell 1111 is exposed through the relief hole 1212.

[0037] A connecting adhesive 1214 is also provided on the bottom surface of the positioning groove 1211. When the end of the battery cell 1111 near the corresponding bracket 121 is inserted into the positioning groove 1211, the connecting adhesive 1214 adheres to the end surface of the battery cell 1111 inserted into the positioning groove 1211, thereby further stabilizing the connection between the battery cell 1111 and the bracket 121. A glue groove 1213 is provided on the bottom surface of the positioning groove 1211. The glue groove 1213 extends circumferentially along the avoidance hole 1212, and the connecting adhesive 1214 is at least partially accommodated in the glue groove 1213. The connecting adhesive 1214 can be formed by curing glue applied to the glue groove 1213, or it can be a tape.

[0038] Continue to refer to Figure 2 A busbar 160 is provided on the side of each bracket 121 facing away from the battery cells 1111. This busbar 160 connects to the terminals 1112 of the battery cells 1111 through avoidance holes 1212, thereby connecting multiple battery cells 1111 in series or parallel. An insulating sheet 170 is also provided on the side of the busbar 160 facing away from the bracket 121. This insulating sheet 170 covers the busbar 160 to improve insulation between adjacent battery modules 100 and reduce the risk of thermal runaway.

[0039] Specifically, the battery assembly 110 includes multiple battery packs 111. The battery packs 111 are arranged along the height direction Z of the battery module 100, and the battery cells 1111 of two adjacent battery packs 111 are staggered. A cooling pipe is provided between two adjacent battery packs 111 to cool and dissipate heat from the multiple battery cells 1111 in the battery packs 111, thereby improving the operating stability of the battery cells 1111.

[0040] The busbar 160 includes multiple connectors 161, which are arranged along the first direction X. Each connector 161 is connected to the pole 1112 of at least one battery cell 1111. The multiple connectors 161 can be connected in parallel or in series, thereby realizing the series or parallel connection of multiple battery cells 1111.

[0041] The battery module 100 provided in the embodiment of the present application supports the two ends of the battery cell 1111 through two brackets 121, and there is no need to use foam glue to fix the battery cell 1111, which is beneficial to reducing the cost and weight of the battery module 100, and makes the disassembly of the battery module 100 more convenient, thereby increasing the maintenance convenience of the battery module 100.

[0042] In some embodiments, as Figure 2 、 Figure 4 and Figure 5As shown, the at least one support 121 can be provided with a fixing hole 1216 at one end thereof along the first direction X, and a fixing sleeve 130 can be embedded in the fixing hole 1216. The fixing sleeve 130 is arranged to be sleeved on a fastener (not shown in the figure) and fixedly connected with the fastener.

[0043] In the embodiment, the at least one support 121 can be provided with a fixing hole 1216 at both ends thereof along the first direction X, and a fixing sleeve 130 can be embedded in the fixing hole 1216. When the battery module 100 is connected with the battery box, the fastener can be inserted into the fixing sleeve 130, so that the fixing sleeve 130 is sleeved on the fastener and fixedly connected with the fastener, and the fastener is connected with the battery box, thereby quickly fixing the support 121 with the battery box, which is very convenient to operate.

[0044] Meanwhile, the fastener can be directly connected with the support 121, so that the fastener exerts excessive fastening force on the support 121, which can cause deformation of the support 121 or even failure of the fastener to fasten the support 121, thereby improving the installation stability of the battery module 100.

[0045] In some embodiments, the support 121 can be provided with a fixing portion 1215 at both ends thereof along the first direction X, and the fixing hole 1216 can pass through the fixing portion 1215. In this way, the fixing hole 1216 formed in the support 121 can reduce the influence on the strength of the structure of the support 121 for supporting the battery cell 1111, thereby improving the support stability of the support 121 for the battery cell 1111.

[0046] In some embodiments, the fixing hole 1216 can pass through the fixing portion 1215 along the height direction Z of the battery module 100, and the first direction X and the second direction Y can form an angle with the height direction Z of the battery module 100. When the support 121 is fixed with the battery box, the battery module 100 can be placed on the bottom surface of the accommodating cavity of the battery box, and then the fastener can pass through the fixing sleeve 130 from above the fixing portion 1215 and be inserted into the part of the battery box below the fixing portion 1215, so as to fix the support 121 with the battery box, which is more convenient to operate.

[0047] Specifically, the support 121 can be provided with a fixing portion 1215 at both ends thereof along the first direction X, and the bottom of the fixing portion 1215 and the bottom of the support 121 can have a spacing, and the top of the fixing portion 1215 and the top of the support 121 can have a spacing. The fixing sleeve 130 can be a nut. The material of the fixing sleeve 130 can be metal or other materials with high strength. The length of the fixing sleeve 130 can be substantially the same as the depth of the fixing hole 1216. The fastener can be a bolt, a screw or the like, which is not limited herein.

[0048] In other embodiments, the fixing hole 1216 may also pass through the fixing portion 1215 along the first direction X or the second direction Y, depending on the structure of the battery box and the fixing portion 1215. The fastener only needs to be able to be inserted into the fixing sleeve 130 and connected to the battery box.

[0049] In some embodiments, fixing holes 1216 may be provided at both ends of the two brackets 121 along the first direction X, thereby facilitating the fixation of the two brackets 121 to the battery box and further improving the assembly efficiency of the battery module 100 and the battery box.

[0050] In some embodiments, as Figure 2 and Figure 3 As shown, an adhesive member 140 can be provided on the bottom surface of at least one bracket 121. When the battery module 100 is installed in the accommodating cavity of the battery box, the adhesive member 140 provided on the bottom surface of the bracket 121 can be bonded to the bottom surface of the accommodating cavity of the battery box, thereby further improving the connection strength between the bracket 121 and the battery box, and the operation is very convenient.

[0051] Specifically, a glue groove 1217 can be provided on the bottom surface of the bracket 121, and the adhesive member 140 can be at least partially accommodated in the glue groove 1217, thereby maintaining a stable position of the adhesive member 140 relative to the bracket 121, which helps to improve the bonding stability between the bottom surface of the bracket 121 and the bottom surface of the battery box's receiving cavity. Furthermore, by providing the glue groove 1217 on the bottom surface of the bracket 121, during the process of connecting the battery module 100 to the battery box, glue can be applied to the glue groove 1217 on the bottom surface of the bracket 121, and then the bottom surface of the bracket 121 can be attached to the bottom surface of the battery box's receiving cavity. After the glue cures, the bottom surface of the bracket 121 and the bottom surface of the receiving cavity can be bonded together.

[0052] Of course, the adhesive member 140 can be directly placed in the adhesive groove 1217, with one side of the adhesive member 140 adhering to the bottom surface of the adhesive groove 1217 and the other side of the adhesive member 140 adhering to the bottom surface of the receiving cavity. The adhesive member 140 can be a double-sided tape or other adhesive member, which is not limited here.

[0053] In some embodiments, the adhesive member 140 may be extended along the first direction X to increase the length of the adhesive member 140 , thereby increasing the bonding strength between the bracket 121 and the bottom surface of the accommodating cavity of the battery box.

[0054] Specifically, the bottom surface of the bracket 121 is a plane. The length of the adhesive member 140 on the bottom surface of the bracket 121 along the first direction X is substantially the same as the length of the bracket 121 along the first direction X, so as to extend the length of the adhesive member 140 on the bottom surface of the bracket 121 as much as possible.

[0055] In other embodiments, the bottom surface of the bracket 121 may be provided with multiple adhesive members 140 , and the multiple adhesive members 140 may be spaced apart along the first direction X. When the battery module 100 is installed in the accommodating cavity of the battery box, the multiple adhesive members 140 located on the bottom surface of the bracket 121 are respectively bonded to the bottom surface of the accommodating cavity, thereby improving the bonding strength between the bracket 121 and the bottom surface of the accommodating cavity of the battery box.

[0056] like Figures 3 to 5 As shown, a receiving portion 1218 can be protruded from the side of the bracket 121 facing the battery cell 1111. The receiving portion 1218 is located at the bottom of the battery cell 1111 assembly, and the receiving portion 1218 includes a receiving groove 1219 for accommodating the battery cell 1111 in the bracket 1218. As a result, the receiving portion 1218 can support and position the battery cell 1111 at the bottom of the battery cell 1111 assembly, which is conducive to improving the connection stability between the battery cell 1111 and the bracket 121.

[0057] In some embodiments, an adhesive member 140 may be provided on a side surface of the accommodating portion 1218 facing away from the battery cell 1111 assembly. When the battery module 100 is installed in the accommodating cavity of the battery box, the adhesive member 140 provided on the side surface of the accommodating portion 1218 facing away from the battery cell 1111 assembly can be bonded to the bottom surface of the accommodating cavity of the battery box, thereby further improving the connection strength between the support assembly 120 and the battery box, and the operation is very convenient.

[0058] The two brackets 121 may each have a protruding receiving portion 1218 on the side facing the battery cell 1111, and the two receiving portions 1218 may each have an adhesive member 140 on the side facing away from the battery cell 1111 assembly. Furthermore, the adhesive member 140 may be extended along the first direction X to increase the length of the adhesive member 140, thereby improving the bonding stability between the receiving portion 1218 and the bottom surface of the receiving cavity.

[0059] Specifically, the side surface of the receiving portion 1218 facing away from the battery cell 1111 assembly is flat. The length of the adhesive member 140 provided on the side surface of the receiving portion 1218 facing away from the battery cell 1111 assembly along the first direction X is substantially the same as the length of the receiving portion 1218 along the first direction X, thereby extending the length of the adhesive member 140 as much as possible.

[0060] In other embodiments, multiple adhesive members 140 may be provided on the side of the accommodating portion 1218 facing away from the battery cell 1111 assembly, and the multiple adhesive members 140 may be spaced apart along the first direction X. When the battery module 100 is installed in the accommodating cavity of the battery box, the multiple adhesive members 140 located on the side of the accommodating portion 1218 facing away from the battery cell 1111 assembly are respectively bonded to the bottom surface of the accommodating cavity, thereby improving the bonding strength between the accommodating portion 1218 and the bottom surface of the accommodating cavity of the battery box.

[0061] like Figure 4 and Figure 5 As shown, a connection hole 1210 may be further formed at at least one end of the bracket 121 along the first direction X, and a conductive member 150 may be disposed in the connection hole 1210. The conductive member 150 is electrically connected to the battery cell 1111. Thus, by electrically connecting the conductive members 150 of two adjacent battery modules 100, the two adjacent battery modules 100 can be conveniently electrically connected.

[0062] A connection hole 1210 may be provided at at least one end of the two brackets 121 along the first direction X, and a conductive member 150 may be provided in each connection hole 1210 so that the two electrodes of the battery cell 1111 are electrically connected to the conductive members 150 of the two brackets 121 respectively.

[0063] In addition, the busbar 160 can be connected to the conductive member 150, thereby achieving electrical connection between the conductive member 150 and the battery cell 1111. Specifically, the conductive member 150 can be a conductive nut, and the busbar 160 can be fixed to the conductive nut by bolts, so that the busbar 160 and the conductive nut can be electrically connected, which is very convenient to operate.

[0064] An embodiment of the present application also provides a battery pack, which includes a battery module. The specific structure of the battery module refers to the above embodiment. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0065] The battery pack includes a battery case and a battery module 100. The battery case includes a receiving cavity. The structure of the battery module 100 can be referred to in the above embodiments, and the battery module 100 is installed in the receiving cavity. The battery pack also includes a fastener, which is inserted into the fixing sleeve 130 of the battery module 100. The fixing sleeve 130 is fitted over the fastener, and the fastener is connected to the battery case, thereby connecting the battery module 100 to the battery case.

[0066] The battery pack provided in the embodiment of the present application is provided with fixing holes 1216 at both ends of at least one bracket 121 of the battery module 100 along the first direction X, and a fixing sleeve 130 is embedded in the fixing hole 1216. When the battery module 100 is connected to the battery box, the fastener can be inserted into the fixing sleeve 130, so that the fixing sleeve 130 is sleeved on the fastener and fixedly connected to the fastener. The fastener is then connected to the battery box, so that the bracket 121 can be quickly fixed to the battery box, and the operation is very convenient.

[0067] Meanwhile, the fastener can be prevented from directly connecting with the support 121, so that the fastening force applied by the fastener to the support 121 is not too large, the support 121 is not deformed, and the fastening of the fastener to the support 121 is not failed, and the installation stability of the battery module 100 is improved.

[0068] The above describes the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A battery module, characterized in that: include: A battery assembly comprising at least one battery pack, wherein the battery pack comprises a plurality of battery cells arranged along a first direction, each of the battery cells extending along a second direction, and the first direction and the second direction forming an angle; A support assembly comprising two brackets arranged opposite to each other, with both ends of each battery cell being supported by the two brackets respectively; Wherein, at least one of the brackets is provided with fixing holes at both ends along the first direction, a fixing sleeve is embedded in the fixing hole, and the fixing sleeve is configured to be sleeved on the fastener and fixedly connected to the fastener.

2. The battery module according to claim 1, wherein: The bracket is provided with fixing parts at both ends along the first direction, and the fixing hole passes through the fixing parts.

3. The battery module according to claim 2, wherein: The fixing hole passes through the fixing portion along a height direction of the battery module, and the first direction and the second direction respectively form an angle with the height direction.

4. The battery module according to claim 1, wherein: The fixing holes are provided at both ends of the two brackets along the first direction.

5. The battery module according to any one of claims 1 to 4, characterized in that: The bottom surface of at least one of the brackets is provided with an adhesive piece.

6. The battery module according to claim 5, wherein: The bottom surface of the bracket is provided with a glue groove, and the adhesive piece is at least partially accommodated in the glue groove.

7. The battery module according to claim 5, wherein: The adhesive member extends along the first direction.

8. The battery module according to claim 5, wherein: The bracket is provided with a accommodating portion on one side facing the battery cell, the accommodating portion is located at the bottom of the battery cell assembly, the accommodating portion includes an accommodating groove for accommodating part of the battery cell, and the adhesive is provided on the side surface of the accommodating portion away from the battery cell assembly.

9. The battery module according to any one of claims 1 to 4, wherein: A connection hole is further provided at at least one end of the bracket along the first direction. A conductive member is provided in the connection hole, and the conductive member is electrically connected to the battery core.

10. A battery pack, characterized in that: include: A battery box, including a receiving cavity; A battery module, wherein the battery module is the battery module according to any one of claims 1 to 9, and the battery module is installed in the accommodating cavity.

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