Energy storage system and battery frame

Abstract

The utility model provides an energy storage system and a battery frame. The battery frame includes: a first end plate; a second end plate; a liquid cooling plate; a battery cell accommodating space is formed among the first end plate, the second end plate and the liquid cooling plate; the battery cell accommodating space is used for accommodating a battery cell group; and the battery cell group comprises a plurality of battery cells which are arranged on the liquid cooling plate in a side standing manner. According to the battery frame, the battery cell group is borne by the liquid cooling plate, so that the arrangement of a structure independently used for bearing the battery cell group is reduced, and even the arrangement of the structure independently used for bearing the battery cell group is omitted, and therefore, the size of the battery frame is simplified, and the miniaturization requirement of an energy storage system is better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage systems, and in particular to an energy storage system and a battery frame. BACKGROUND

[0002] With the rapid development of energy storage technology, the energy demand for energy storage systems is increasing, and efficient thermal management solutions are urgently needed to ensure the safety and stability of the system under high load operation. In existing thermal management systems, liquid cooling technology is usually used to exchange heat between the liquid cooling plate and the battery cell to cool the battery cell. However, the traditional cooling method is often large in size and difficult to meet the miniaturization needs of the energy storage system when meeting the growing cooling demand. SUMMARY

[0003] The embodiments in the present application provide an energy storage system and a battery frame that better meet the miniaturization needs.

[0004] In one aspect, the present application provides a battery frame, comprising:

[0005] a first end plate;

[0006] a second end plate;

[0007] a liquid cooling plate;

[0008] The first end plate, the second end plate and the liquid cooling plate form a battery cell containing space; the battery cell containing space is used to contain a battery cell group; the battery cell group comprises a plurality of battery cells arranged vertically on the liquid cooling plate.

[0009] In some embodiments, the liquid cooling plate extends beyond the first end plate along the arrangement direction;

[0010] The liquid cooling plate is provided with a liquid cooling channel, and the inlet and outlet of the liquid cooling channel are located on the part of the liquid cooling plate extending beyond the first end plate.

[0011] In some embodiments, the surface of the first end plate opposite to the second end plate is provided with a first protruding rib and a second protruding rib, and the surface of the second end plate opposite to the first end plate is provided with a first protruding rib and a second protruding rib; the first protruding rib and the second protruding rib both extend along the surface of the liquid cooling plate supporting the battery cell group;

[0012] The second protruding rib of the battery frame is used to be fixedly connected with the first protruding rib of another battery frame.

[0013] In some embodiments, the first protruding rib and the second protruding rib are both provided with mounting holes, and the positions of the mounting holes avoid the liquid cooling plate.

[0014] In some embodiments, the battery frame further comprises fasteners and supports; the supports correspond to positions of the mounting holes; the fasteners are used to fixedly connect the second protruding ridge of the battery frame, the supports and the first protruding ridge of another battery frame.

[0015] In some embodiments, the battery frame further comprises a support beam arranged between the first end plate and the second end plate; the support beam is fixedly connected to the first end plate and the second end plate at two ends respectively; and both sides of the support beam are used to arrange the cell group.

[0016] In some embodiments, the battery frame further comprises a plurality of connecting pieces; some of the connecting pieces are used to fixedly connect the first end plate and the support beam, and some of the connecting pieces are used to fixedly connect the second end plate and the support beam; wherein the connecting pieces comprise a fixed piece fixedly connected to the first end plate or the second end plate and a plug-in ring plugged with the support beam.

[0017] In another aspect, the application also provides a battery frame, which comprises a first end plate, a second end plate and a liquid cooling plate; the first end plate and the second end plate are fixedly connected to the liquid cooling plate; and the first end plate and the second end plate are arranged in parallel.

[0018] The battery frame comprises:

[0019] a first end plate

[0020] a second end plate

[0021] a liquid cooling plate

[0022] The first end plate, the second end plate and the liquid cooling plate form a cell accommodating space; the cell accommodating space is used to accommodate a cell group; and the cell group comprises a plurality of cells arranged in a vertical manner on the liquid cooling plate.

[0023] In some embodiments, the surface of the first end plate of the battery frame, which faces away from the cell group, is provided with a first protruding ridge and a second protruding ridge; the surface of the second end plate of the battery frame, which faces away from the cell group, is provided with a first protruding ridge and a second protruding ridge; the first protruding ridge and the second protruding ridge of the battery frame both extend along the surface of the liquid cooling plate supporting the cell group; and the battery frame comprises a first battery frame and a second battery frame arranged in a stacked manner.

[0024] The second protruding ridge of the first battery frame is fixedly connected to the first protruding ridge of the second battery frame.

[0025] In some embodiments, the first protruding ridge and the second protruding ridge of the battery frame are both provided with mounting holes; and the positions of the mounting holes avoid the liquid cooling plate.

[0026] In some embodiments, the mounting hole of the second rib in the first battery frame is fixedly connected with the mounting hole of the first rib in the second battery frame by a fastener.

[0027] In some embodiments, the battery frame further comprises a support corresponding to the mounting hole position;

[0028] The thickness of the support is not less than the thickness of the liquid cooling plate in the direction of stacking the first battery frame and the second battery frame.

[0029] In some embodiments, the battery frame comprises two supports, namely a first support and a second support, and the liquid cooling plate is located between the first support and the second support.

[0030] In some embodiments, the battery frame comprises a first battery frame and a second battery frame stacked;

[0031] The liquid cooling plate extends out of the first end plate of the first battery frame in the arrangement direction, and the liquid cooling plate of the first battery frame is clamped between the first end plate and the second end plate of the first battery frame and the first end plate and the second end plate of the second battery frame.

[0032] In some embodiments, the liquid cooling plate is provided with a liquid cooling channel, and the inlet and outlet of the liquid cooling channel are located in the part of the liquid cooling plate extending out of the first end plate.

[0033] In some embodiments, the battery cell group comprises a first sub-battery cell group and a second sub-battery cell group arranged side by side; the first sub-battery cell group comprises a first battery cell standing on the side, and the second sub-battery cell group comprises a second battery cell standing on the side;

[0034] The first battery cell has a first end face facing away from the second sub-battery cell group, and the first end face is provided with an electrode terminal; the second battery cell has a second end face facing away from the first sub-battery cell group, and the second end face is provided with an electrode terminal;

[0035] The first battery cell has a third end face facing the second sub-battery cell group, and the third end face is provided with a pressure release structure; the second battery cell has a fourth end face facing the first sub-battery cell group, and the fourth end face is provided with a pressure release structure.

[0036] In some embodiments, the battery frame further comprises a support beam arranged between the first end plate and the second end plate, the support beam is fixedly connected with the first end plate and the second end plate respectively, and the support beam is located between the first sub-battery cell group and the second sub-battery cell group.

[0037] In some embodiments, the battery frame further comprises a plurality of connectors; some of the connectors are used to fixedly connect the first end plate and the support beam, and some of the connectors are used to fixedly connect the second end plate and the support beam; wherein the connectors comprise a fixed part fixedly connected with the first end plate or the second end plate and a plug-in ring plugged with the support beam.

[0038] The plurality of embodiments provided by the present application carry the battery cell group through the liquid cooling plate, so as to reduce or even cancel the structure for carrying the battery cell group, thereby simplifying the volume of the battery frame and better meeting the miniaturization requirement of the energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown.

[0040] Figure 2 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown. Figure 1 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown.

[0041] Figure 3 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown. Figure 1 The sectional view of the battery frame along the M-M direction in the present application is shown.

[0042] Figure 4 The sectional view of the battery frame along the N-N direction in the present application is shown. Figure 2 The sectional view of the battery frame along the N-N direction in the present application is shown.

[0043] Figure 5 The sectional view of the battery frame along the N-N direction in the present application is shown. Figure 4 The sectional view of the battery frame along the N-N direction in the present application is shown.

[0044] Figure 6 The sectional view of the battery frame along the N-N direction in the present application is shown. Figure 2 The sectional view of the battery frame along the N-N direction in the present application is shown.

[0045] Figure 7 The sectional view of the battery frame along the N-N direction in the present application is shown. Figure 6 The sectional view of the battery frame along the N-N direction in the present application is shown.

[0046] Figure 8 The sectional view of the battery frame along the N-N direction in the present application is shown. Figure 1 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown.

[0047] Figure 9 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown.

[0048] Figure 10 The structural schematic diagram of the battery frame provided by an embodiment of the present application is shown. Figure 9 The sectional view of the battery frame along the N-N direction in the present application is shown.

[0049] BRIEF DESCRIPTION OF DRAWINGS

[0050] 1000, energy storage system; 100, battery frame; 100a, first battery frame; 100b, second battery frame; 110a, first end plate; 110b, second end plate; 111, first rib; 112, second rib; 113, mounting hole; 120, liquid cooling plate; 121, liquid cooling channel; 122, inlet; 123, outlet; 140, support; 140a, first support; 140b, second support; 150, support beam; 160, connecting piece; 161, fixing piece; 162, plug-in ring; 200, cell group; 200a, first sub-cell group; 200b, second sub-cell group; 210, cell; 210a, first cell; 210b, second cell; 211, first end face; 212, second end face; 213, third end face; 214, fourth end face; 201, electrode terminal; 202, pressure release structure; 101, cell containing space; DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below 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 of the present application.

[0052] In the present application, the drawings are not necessarily drawn to scale, and local features can be enlarged or reduced to more clearly show the details of the local features.

[0053] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the scope of the present application. The term "and / or" used in the present application includes any and all combinations of one or more of the listed items. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0054] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0055] In the description of the present application, the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of the simplified description of the present application, and do not indicate that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the present application.

[0056] In the description of the present application, unless otherwise explicitly defined, the terms "mounting", "connecting", "connecting", "fixing", "setting", and the like should be broadly understood. For example, "connecting" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the description of the present application, unless otherwise explicitly defined, the first feature "on", "over", "above", and "above", "below", "under", "below", or "below" the second feature can be direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium. Moreover, the first feature "over", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature "under", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than the horizontal height of the second feature.

[0058] Researchers have found that the battery core group can be carried by the liquid cooling plate to reduce the structure for carrying the battery core group alone, or even cancel the structure for carrying the battery core group alone, so as to simplify the volume of the battery frame, so as to better meet the miniaturization demand of the energy storage system.

[0059] Referring to Figures 1 to 8 , the battery frame 100 provided by an embodiment of the present application includes a first end plate 110a, a second end plate 110b and a liquid cooling plate 120 arranged oppositely. The first end plate 110a, the second end plate 110b and the liquid cooling plate 120 form a battery core accommodating space 101 therebetween; the battery core accommodating space 101 is used for accommodating a battery core group; the battery core group includes a plurality of battery cores arranged vertically on the liquid cooling plate. In other words, the liquid cooling plate 120 has the functions of cooling the battery core group and supporting the battery core group.

[0060] The battery frame 100 described above carries the cell group through the liquid cooling plate 120 to reduce or even eliminate the structure for carrying the cell group, thereby simplifying the volume of the battery frame 100 to better meet the miniaturization needs of the energy storage system.

[0061] In addition, reducing or eliminating the structure for carrying the cell group also reduces or eliminates the structure for fixing the first end plate 110a and the second end plate 110b.

[0062] Furthermore, by carrying the cell group through the liquid cooling plate 120, the relative stability between the cell group and the liquid cooling plate 120 is improved, that is, the risk of misalignment between the cell group and the liquid cooling plate 120 is reduced, so that the cell group can be cooled more stably.

[0063] In the present embodiment, the liquid cooling plate 120 extends the first end plate 110a along the arrangement direction; the liquid cooling plate 120 is provided with a liquid cooling channel 121, and the inlet 122 and outlet 123 of the liquid cooling channel 121 are located at the part of the liquid cooling plate 120 extending the first end plate 110a. It can be understood that the liquid cooling plate 120 extends the first end plate 110a along the arrangement direction, which means that the liquid cooling plate 120 extends the first end plate 110a along the arrangement direction of the first end plate 110a and the second end plate 110b. The inlet 122 and outlet 123 of the liquid cooling channel 121 avoid the area for arranging the cell group to avoid increasing the distance between the cell group and the liquid cooling plate 120 due to the arrangement of the inlet 122 and outlet 123 of the liquid cooling channel 121, that is, to avoid increasing the height of the battery frame 100 due to the arrangement of the inlet 122 and outlet 123 of the liquid cooling channel 121, so as to better meet the miniaturization needs of the energy storage system.

[0064] Specifically, in the present embodiment, one end of the liquid cooling plate 120 extends the first end plate 110a. It can be understood that in other embodiments, the other end of the liquid cooling plate 120 can also extend the second end plate 110b.

[0065] In the embodiment, the surface of the first end plate 110a facing away from the second end plate 110b is provided with a first protruding rib 111 and a second protruding rib 112. The surface of the second end plate 110b facing away from the first end plate 110a is provided with a first protruding rib 111 and a second protruding rib 112. Both the first protruding rib 111 and the second protruding rib 112 extend along the surface of the liquid cooling plate 120 supporting the battery cell group, in other words, the extension direction of the first protruding rib 111 and the second protruding rib 112 is parallel to the surface of the liquid cooling plate 120 for supporting the battery cell group. The second protruding rib 112 of the battery frame 100 is used to be fixedly connected with the first protruding rib 111 of another battery frame 100. The arrangement of the first protruding rib 111 and the second protruding rib 112 improves the stability of the fixed connection between the first end plates 110a of the two battery frames 100 and the stability of the fixed connection between the second end plates 110b of the two battery frames 100.

[0066] In some embodiments, heat dissipation channels or the like are arranged on the first end plate 110a and / or the second end plate 110b. The arrangement of the first protruding rib 111 and the second protruding rib 112 facilitates the realization of the structure for fixing the two battery frames 100, avoids the arrangement of the heat dissipation channels or the like, and thus avoids the influence on the smoothness of heat dissipation.

[0067] In the embodiment, in the direction perpendicular to the liquid cooling plate 120, the first protruding rib 111 is located at the bottom side of the second protruding rib 112. The bottom surface of the first protruding rib 111 is flush with the bottom surface of the corresponding first end plate 110a or second end plate 110b; the top surface of the second protruding rib 112 is flush with the top surface of the corresponding first end plate 110a or second end plate 110b. Therefore, the arrangement of the first protruding rib 111 and the second protruding rib 112 increases the abutting area of the first end plates 110a of the two battery frames 100, increases the abutting area of the second end plates 110b of the two battery frames 100, reduces the pressure received by the first end plate 110a, reduces the pressure received by the second end plate 110b, and improves the stability of the fixed connection of the two battery frames 100. Of course, in the embodiment, the first end plates 110a of the two battery frames 100 are indirectly abutted, and the second end plates 110b of the two battery frames 100 are indirectly abutted. In some other embodiments, the first end plates 110a of the two battery frames 100 can also be directly abutted, and the second end plates 110b of the two battery frames 100 can also be directly abutted.

[0068] Furthermore, the connection structure for realizing the fixed connection of the two battery frames 100 is arranged on the first protruding rib 111 and the second protruding rib 112, which is convenient for preparation, installation and maintenance.

[0069] Specific to the embodiment, the first protruding edge 111 and the second protruding edge 112 are both provided with mounting holes 113, and the positions of the mounting holes 113 avoid the liquid cooling plate 120. The liquid cooling plate 120 is clamped and fixed by the first end plate 110a and the second end plate 110b of the two battery frames 100, and it is not necessary to provide a fixing hole or the like structure on the liquid cooling plate 120, so that the fixed connection of the liquid cooling plate 120 is realized, and the structural strength of the liquid cooling plate 120 is also avoided. In addition, it is not necessary to provide a fixing hole on the liquid cooling plate 120, so that the sealing performance of the liquid cooling channel 121 in the liquid cooling plate 120 can be improved.

[0070] In the embodiment, the battery frame 100 further includes a fastener (not shown) and a support 140; the support 140 corresponds to the positions of the mounting holes 113; and the fastener is used to fixedly connect the second protruding edge 112 of the battery frame 100, the support 140 and the first protruding edge 111 of the other battery frame 100. In other words, the support 140 is arranged between the first end plates 110a of the two battery frames 100. The support 140 is also provided with mounting holes 113, which are matched with the mounting holes 113 on the first protruding edge 111 and the second protruding edge 112. The fastener passes through the mounting holes 113 on the second protruding edge 112 of one battery frame 100, the mounting holes 113 on the support 140 and the mounting holes 113 on the first protruding edge 111 of the other battery frame 100, so as to realize the fixed connection of the two battery frames 100.

[0071] It can be understood that the support 140 is used to support the cell group, so as to reduce the stress borne by the liquid cooling plate 120.

[0072] Optionally, the battery frame 100 includes two supports 140, which are arranged on the two sides of the liquid cooling plate 120 respectively, so as to limit the liquid cooling plate 120 and avoid the sliding of the liquid cooling plate 120 in the transverse direction.

[0073] Optionally, the thickness of the support 140 is substantially consistent with the thickness of the liquid cooling plate 120, so that the liquid cooling plate 120 can be stably clamped between the first end plate 110a and the second end plate 110b of the two battery frames 100.

[0074] In the embodiment, the battery frame 100 further includes a support beam 150 arranged between the first end plate 110a and the second end plate 110b, the two ends of the support beam 150 are fixedly connected with the first end plate 110a and the second end plate 110b respectively, and the two sides of the support beam 150 are used to arrange the cell group. It can be understood that, in the present application, the support beam 150 is used to space the adjacent two cell groups.

[0075] The battery frame 100 further comprises a plurality of connecting pieces 160. In the plurality of connecting pieces 160, some connecting pieces 160 are used to fixedly connect the first end plate 110a and the support beam 150, and some connecting pieces 160 are used to fixedly connect the second end plate 110b and the support beam 150; wherein the connecting piece 160 comprises a fixed piece 161 fixedly connected with the first end plate 110a or the second end plate 110b, and a plug-in ring 162 plugged with the support beam 150.

[0076] In the embodiment, the support beam 150 is further provided with a heat dissipation channel, and the support beam 150 is further provided with a heat dissipation hole communicating the heat dissipation channel and an external space of the support beam 150. When the battery cell group is arranged, if the explosion relief device on the battery cell group is arranged on the side of the battery cell group close to the support beam 150, the heat dissipated from the opening of the explosion relief device can flow into the heat dissipation channel through the heat dissipation hole, and then be dissipated through the heat dissipation channel.

[0077] In addition, in the embodiment, the first end plate 110a and the second end plate 110b are also provided with heat dissipation channels. The connecting piece 160 is provided with a switching channel, so that the heat in the heat dissipation channel of the support beam 150 can flow into the heat dissipation channel on the first end plate 110a or the second end plate 110b through the switching channel.

[0078] Referring to Figure 9 and Figure 10 , an embodiment of the present application further provides a battery energy storage system 1000, comprising a battery frame 100 and a battery cell group 200 arranged in the battery frame 100; the battery cell group 200 comprises a plurality of vertically arranged battery cells 210.

[0079] The battery energy storage system 1000 described above carries the battery cell group 200 through the liquid cooling plate 120, so as to reduce or even cancel the arrangement of a structure for carrying the battery cell group 200, thereby simplifying the volume of the battery frame 100, and better meeting the miniaturization requirement of the battery energy storage system 1000.

[0080] In the embodiment, the battery energy storage system 1000 comprises a plurality of battery frames 100 arranged in a stack, specifically, a first battery frame 100a and a second battery frame 100b arranged in a stack. The second protruding rib 112 of the first battery frame 100a is fixedly connected with the first protruding rib 111 of the second battery frame 100b.

[0081] Optionally, along the direction in which the first battery frame 100a and the second battery frame 100b are arranged in a stack, the thickness of the support piece 140 is not less than the thickness of the liquid cooling plate 120, so as to facilitate the support of the support piece 140 to the battery cell group 200.

[0082] In the embodiment, the support 140 includes two supports 140, i.e., a first support 140a and a second support 140b, and the liquid cooling plate 120 is located between the first support 140a and the second support 140b.

[0083] In the embodiment, the energy storage system 1000 includes two battery frames 100, i.e., a first battery frame 100a and a second battery frame 100b, which are stacked. The second battery frame 100b is located on the bottom side of the first battery frame 100a. The liquid cooling plate 120 of the first battery frame 100a is clamped between the first end plate 110a and the second end plate 110b of the first battery frame 100a and the first end plate 110a and the second end plate 110b of the second battery frame 100b.

[0084] In some other embodiments, the number of battery frames 100 in the energy storage system 1000 is not limited to two, but can also be one or more than two. When the number of battery frames 100 is more than two, the adjacent two battery frames 100 can be respectively identified as the first battery frame 100a and the second battery frame 100b, and the connection relationship of the adjacent two battery frames 100 can be in the same way, which will not be described one by one here.

[0085] The cell group 200 includes a first sub-cell group 200a and a second sub-cell group 200b arranged side by side. The first sub-cell group 200a includes a first cell 210a standing on the side, and the second sub-cell group 200b includes a second cell 210b standing on the side. The first cell 210a has a first end face 211 facing away from the second sub-cell group 200b, and the first end face 211 is provided with an electrode terminal 201. The second cell 210b has a second end face 212 facing away from the first sub-cell group 200a, and the second end face 212 is provided with an electrode terminal 201. The first cell 210a has a third end face 213 facing the second sub-cell group 200b, and the third end face 213 is provided with a pressure release structure 202. The second cell 210b has a fourth end face 214 facing the first sub-cell group 200a, and the fourth end face 214 is provided with a pressure release structure 202.

[0086] The first cell 210a has the first end face 211 and the third end face 213 arranged opposite to each other, and the electrode terminal 201 and the pressure release structure 202 on the first cell 210a are arranged on the first end face 211 and the third end face 213 respectively, so as to realize the isolation of the electrode terminal 201 and the pressure release structure 202 in the physical space, avoid the influence of the pressure release structure 202 on the normal operation of the electrode terminal 201 when releasing heat, and improve the stability and service life of the cell group 200.

[0087] Similarly, the second electrode 210b has a second end face 212 and a fourth end face 214 oppositely arranged, and the electrode terminal 201 and the pressure release structure 202 on the second electrode 210b are arranged on the second end face 212 and the fourth end face 214 respectively, so as to realize the isolation of the electrode terminal 201 and the pressure release structure 202 in the physical space, avoid the influence of the normal operation of the electrode terminal 201 when the pressure release structure 202 releases heat, and improve the stability and service life of the battery cell group 200.

[0088] In the embodiment, the support beam 150 is located between the first sub-battery cell group 200a and the second sub-battery cell group 200b.

[0089] Specifically, in the embodiment, the pressure release structure 202 on the battery cell 210 is arranged to face the support beam 150, and the heat released through the opening of the pressure release structure 202 can be discharged through the heat dissipation channel on the support beam 150.

[0090] It can be understood that in various embodiments of the present application, the size of the serial number of each process does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0091] It can be understood that the various embodiments described in the present application can be implemented alone or in combination, and the embodiments of the present application do not limit this.

[0092] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0093] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery frame, characterized by, The battery frame comprises: a first end plate; a second end plate; a liquid cooling plate; an electric cell accommodating space is formed between the first end plate, the second end plate and the liquid cooling plate; the electric cell accommodating space is used for accommodating an electric cell group; the electric cell group comprises a plurality of electric cells arranged in a vertical manner on the liquid cooling plate.

2. The battery frame of claim 1, wherein, The liquid cooling plate extends beyond the first end plate along an arrangement direction; the arrangement direction is the arrangement direction of the first end plate and the second end plate. The liquid cooling plate is provided with a liquid cooling channel; the inlet and outlet of the liquid cooling channel are located on the part of the liquid cooling plate extending beyond the first end plate.

3. The battery frame of claim 1, wherein, The surface of the first end plate opposite to the second end plate is provided with a first protruding rib and a second protruding rib; the surface of the second end plate opposite to the first end plate is provided with a first protruding rib and a second protruding rib; the first protruding rib and the second protruding rib both extend along the surface of the liquid cooling plate supporting the electric cell group. The second protruding rib of the battery frame is used for fixedly connecting with the first protruding rib of another battery frame.

4. The battery frame of claim 3, wherein, The first protruding rib and the second protruding rib are both provided with mounting holes; the positions of the mounting holes avoid the liquid cooling plate.

5. The battery frame of claim 4, wherein, The battery frame further comprises a fastener and a support; the support corresponds to the positions of the mounting holes; the fastener is used for fixedly connecting the second protruding rib of the battery frame, the support and the first protruding rib of another battery frame.

6. The battery frame of claim 1, wherein, The battery frame further comprises a support beam arranged between the first end plate and the second end plate; the two ends of the support beam are fixedly connected with the first end plate and the second end plate respectively; the two sides of the support beam are both used for arranging the electric cell group.

7. The battery frame of claim 6, wherein, The battery frame further comprises a plurality of connecting pieces; part of the connecting pieces are used for fixedly connecting the first end plate and the support beam; part of the connecting pieces are used for fixedly connecting the second end plate and the support beam; the connecting piece comprises a fixed piece fixedly connected with the first end plate or the second end plate and a plug-in ring plugged with the support beam.

8. An energy storage system characterized by, The energy storage system comprises a battery frame and an electric cell group arranged in the battery frame; the electric cell group comprises electric cells arranged in a vertical manner. The battery frame comprises: a first end plate a second end plate; a liquid cooling plate; an electric cell accommodating space is formed between the first end plate, the second end plate and the liquid cooling plate; the electric cell accommodating space is used for accommodating an electric cell group; the electric cell group comprises a plurality of electric cells arranged in a vertical manner on the liquid cooling plate.

9. The energy storage system of claim 8, wherein, The surface of the first end plate opposite to the electric cell group is provided with a first protruding rib and a second protruding rib; the surface of the second end plate opposite to the electric cell group is provided with a first protruding rib and a second protruding rib; the first protruding rib and the second protruding rib both extend along the surface of the liquid cooling plate supporting the electric cell group; the battery frame comprises a first battery frame and a second battery frame arranged in a stacked manner; The second protruding rib of the first battery frame is fixedly connected with the first protruding rib of the second battery frame.

10. The energy storage system of claim 9, wherein, The first protruding rib and the second protruding rib of the battery frame are both provided with mounting holes; the positions of the mounting holes avoid the liquid cooling plate. The first protruding rib and the second protruding rib of the battery frame are both provided with mounting holes; the positions of the mounting holes avoid the liquid cooling plate.

11. The energy storage system of claim 10, wherein, The mounting hole of the second rib in the first battery frame is fixedly connected with the mounting hole of the first rib in the second battery frame through a fastener.

12. The energy storage system of claim 10, wherein, The battery frame further comprises a support corresponding to the position of the mounting hole; The thickness of the support is not less than the thickness of the liquid cooling plate in the direction of stacking the first battery frame and the second battery frame.

13. The energy storage system of claim 12, wherein, The battery frame comprises two supports, namely a first support and a second support, and the liquid cooling plate is located between the first support and the second support.

14. The energy storage system of claim 8, wherein, The battery frame comprises a first battery frame and a second battery frame arranged in a stacking manner. The liquid cooling plate extends out of the first end plate of the first battery frame in the arrangement direction, and the liquid cooling plate of the first battery frame is clamped between the first end plate and the second end plate of the first battery frame and the first end plate and the second end plate of the second battery frame; wherein the arrangement direction is the direction in which the first end plate and the second end plate are arranged.

15. The energy storage system of claim 14, wherein, The liquid cooling plate is provided with a liquid cooling channel, and the inlet and outlet of the liquid cooling channel are located in the part of the liquid cooling plate extending out of the first end plate.

16. The energy storage system of claim 8, wherein, The battery cell group comprises a first sub-battery cell group and a second sub-battery cell group arranged side by side; the first sub-battery cell group comprises a first battery cell standing on the side, and the second sub-battery cell group comprises a second battery cell standing on the side; The first battery cell has a first end face facing away from the second sub-battery cell group, and the first end face is provided with an electrode terminal; the second battery cell has a second end face facing away from the first sub-battery cell group, and the second end face is provided with an electrode terminal; The first battery cell has a third end face facing the second sub-battery cell group, and the third end face is provided with a pressure release structure; the second battery cell has a fourth end face facing the first sub-battery cell group, and the fourth end face is provided with a pressure release structure.

17. The energy storage system of claim 16, wherein, The battery frame further comprises a support beam arranged between the first end plate and the second end plate, and the support beam is fixedly connected with the first end plate and the second end plate respectively, and the support beam is located between the first sub-battery cell group and the second sub-battery cell group.

18. The energy storage system of claim 17, wherein, The battery frame further comprises a plurality of connecting pieces; part of the connecting pieces are used to fixedly connect the first end plate and the support beam, and part of the connecting pieces are used to fixedly connect the second end plate and the support beam; wherein the connecting piece comprises a fixed piece fixedly connected with the first end plate or the second end plate and a plug-in ring plugged with the support beam.

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