A platform soft pack battery module

Abstract

The present invention provides a platform soft-pack battery module, comprising: a fixed frame, a plurality of soft-pack battery cells, a front cover plate assembly and a rear cover plate assembly, wherein the plurality of soft-pack battery cells are inserted into the fixed frame at intervals, and one end of the soft-pack battery cell abuts against the front cover plate assembly, and the other end of the soft-pack battery cell abuts against the rear cover plate assembly. The platform soft-pack battery module provided by the present invention adopts a fixed frame in the form of an integrated aluminum profile extrusion with a slot, which simplifies the structure of the battery module, reduces the number of redundant components, and improves the grouping efficiency of the battery module.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicle power batteries, and in particular to a platform-based soft-pack battery module. Background Art

[0002] With the formulation of relevant standards and specifications for power battery systems, the market has higher and higher requirements for the energy density of power battery systems. In 2017, the Ministry of Industry and Information Technology issued the "China Automobile Industry Medium- and Long-Term Development Plan", proposing that the battery energy density should reach 300Wh / kg in 2020, and the system specific energy should strive to reach 260Wh / kg. This is a product indicator and a direction of effort. In the 2018 vehicle installation data, the energy density of the battery system has increased significantly compared with 2017. The energy density of pure electric passenger cars has increased from 107.6Wh / kg to 118.8Wh / kg, an increase of 10.37%. In addition, affected by the rapid increase in monomer energy density and the progress of grouping technology, the energy density of the battery system has increased more and more from 2015 to 2018. Under the pressure of linking the subsidy amount with the energy density of the battery system, domestic power companies have stepped up the pace of developing a new generation of high-performance power batteries.

[0003] At present, the energy density of soft-pack cells in battery modules is higher than that of cylindrical and square cells, and the physical structure of soft-pack cells determines that they are not easy to explode. At the same time, soft-pack cells also have the best heat dissipation among several cell structures. However, soft-pack cells in battery modules have high requirements for module design, and safety is not easy to control. The structural design of the battery is a problem that needs to be solved. A large amount of data shows that the future lightweight module is developing in the direction of large modules and platform standard modules. The advantage of platform battery modules is that they spend the least development cost, realize cross-platform applications, and break through the limitations of different vehicle designs. Large modules do not have this advantage. Therefore, platform battery modules have become the mainstream of research.

[0004] However, in the existing battery modules, the module fixing frame is formed by welding a top frame and a bottom frame in the form of bent aluminum sheets, and a battery cell support frame and a heat-conducting aluminum plate are provided inside the module. This not only requires welding of the battery module fixing frame, but also makes the internal structure complex and the number of parts large. At the same time, it also makes the cost of the battery module high and the battery cell grouping efficiency low. Summary of the invention

[0005] The present invention provides a platform soft-pack battery module, which uses an integrated aluminum profile fixing frame with slots to fix the soft-pack battery core, solving the technical problems in the prior art that the fixing frame of the battery module needs to be welded and has a large number of parts.

[0006] The present invention provides a platform soft-pack battery module, comprising: a fixed frame, a plurality of soft-pack battery cells, a front cover plate assembly and a rear cover plate assembly, wherein the plurality of soft-pack battery cells are inserted into the fixed frame at intervals, and one end of the soft-pack battery cell abuts against the front cover plate assembly, and the other end of the soft-pack battery cell abuts against the rear cover plate assembly.

[0007] Furthermore, the inner top wall and the inner bottom wall of the fixed frame are provided with a plurality of relative slots, the soft-pack battery cells are inserted into the slots, and both ends of the soft-pack battery cells protrude outward from the front and rear ends of the fixed frame and abut against the front cover assembly and the rear cover assembly.

[0008] Furthermore, the front cover plate assembly includes: a front end plate, a front isolation plate and a front support assembly, wherein the front isolation plate is located between the front end plate and the front support assembly, the front support assembly cover is arranged at the front end opening of the fixed frame, and the front end plate cover is arranged on the front isolation plate and the front support assembly and is connected to the fixed frame.

[0009] Furthermore, the front support assembly includes: an output copper bar, a series copper bar, a front copper bar support plate and a battery cell limiting plate, one end of the front copper bar support plate is connected to the battery cell limiting plate, and the other end of the front copper bar support plate is connected to the output copper bar and the series copper bar;

[0010] The series copper bar and the output copper bar are arranged in parallel at one end of the front copper bar support plate, and the series copper bar is located in the center of the front copper bar support plate, and the output copper bar is located on both sides of the series copper bar.

[0011] Furthermore, the soft-pack battery cell further comprises: pole ears, which are located at two ends of the soft-pack battery cell, the pole ears protrude out of the fixing frame, and the pole ears can be inserted into the battery cell limiting plate.

[0012] Furthermore, the output copper bus, the series copper bus, the front copper bus support plate and the battery cell limiting plate are provided with sockets for inserting the pole tabs, and the pole tabs can pass through the battery cell limiting plate and the front copper bus support plate and be connected to the output copper bus and the series copper bus.

[0013] Furthermore, the front copper busbar support plate is also provided with a nut, and the copper busbar or high-voltage wire outside the battery module and the output copper busbar can be electrically connected to the nut through bolts.

[0014] Furthermore, the front isolation plate, the front copper bar support plate and the battery cell limiting plate are all provided with fixing holes, and fasteners fasten and connect the isolation plate, the front copper bar support plate and the battery cell limiting plate through the fixing holes.

[0015] Furthermore, the rear cover plate assembly includes: a rear end plate, a rear isolation plate and a rear support assembly, wherein the rear isolation plate is located between the rear end plate and the rear support assembly, the rear support assembly cover is arranged on the rear end opening of the fixed frame, and the rear end plate cover is arranged on the rear isolation plate and the rear support assembly and is connected to the fixed frame.

[0016] Furthermore, the rear support assembly includes: a series copper bar, a rear copper bar support plate and a battery cell limiting plate, one end of the rear copper bar support plate is connected to the series copper bar, the other end of the rear copper bar support plate is connected to the battery cell limiting plate, the pole ear on the other end of the soft-pack battery cell passes through the battery cell limiting plate and the rear copper bar support plate and is connected to the series copper bar, the rear copper bar support plate, the rear isolation plate and the battery cell limiting plate are provided with fixing holes, the fasteners fasten the rear copper bar support plate, the rear isolation plate and the battery cell limiting plate through the fixing holes, and the rear end plate is connected to the fixed frame.

[0017] The present invention provides a platform soft-pack battery module, which includes: a fixed frame, a plurality of soft-pack battery cells, a front cover plate assembly and a rear cover plate assembly, wherein the fixed frame is formed by pressing an integrated aluminum profile, a hollow accommodating cavity is arranged inside the fixed frame, the soft-pack battery cell is inserted in the accommodating cavity of the fixed frame, one end of the soft-pack battery cell is against the front cover plate assembly, and the other end of the soft-pack battery cell is against the rear cover plate assembly, and the front cover plate assembly, the rear cover plate assembly and the fixed frame jointly wrap the soft-pack battery cell. In the prior art, the fixed frame is formed by bending and welding aluminum sheet metal, and is divided into a base frame and a The upper frame is fixed with the soft-pack battery cells and then welded together. A thermal conductive aluminum plate and a battery cell support frame are also required, which results in a large number of components and affects heat dissipation. In the soft-pack battery module provided in this embodiment, the fixed frame is integrally formed, which reduces the welding process, and there are no thermal conductive aluminum plates and battery cell support frames in the fixed frame, which reduces the components in the battery module, making the grouping method simpler, reducing the cost of the battery module, and improving the battery cell grouping efficiency, thereby solving the technical problems of high cost, poor heat dissipation and low grouping efficiency caused by the complex structure of the battery module in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a platform soft-pack battery module provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of a platform-based soft-pack battery module provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the overall structure of a platform-based soft-pack battery module fixing frame provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a platform-based soft-pack battery module soft-pack battery cell and a fixing frame provided by an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the overall structure of a front support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the internal structure of a front support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the overall structure of a rear support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the internal structure of a rear support assembly of a platform-based soft-pack battery module provided in an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-Soft pack battery module;

[0028] 10-Fixed frame;

[0029] 11-Soft pack battery;

[0030] 12-front cover assembly;

[0031] 13- rear cover assembly;

[0032] 14- Fasteners;

[0033] 101 - slot;

[0034] 111-ear;

[0035] 121-front support assembly;

[0036] 122-front partition plate;

[0037] 123-front end plate;

[0038] 1211- front copper bar support plate;

[0039] 1212-cell limit plate;

[0040] 1213-series copper busbar;

[0041] 1214- output copper busbar;

[0042] 1215-Inlay mother;

[0043] 1216-fixing hole;

[0044] 131- rear support assembly;

[0045] 132-rear isolation plate;

[0046] 133-rear end plate;

[0047] 1311-Rear copper bar support plate. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Figure 1 A schematic diagram of the overall structure of a platform soft-pack battery module provided by an embodiment of the present invention; Figure 2 A schematic diagram of a platform-based soft-pack battery module provided by an embodiment of the present invention; Figure 3 A schematic diagram of the overall structure of a platform-based soft-pack battery module fixing frame provided by an embodiment of the present invention; Figure 4 A schematic diagram of a platform-based soft-pack battery module soft-pack battery cell and a fixing frame provided by an embodiment of the present invention; Figure 5 A schematic diagram of the overall structure of a front support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention; Figure 6 A schematic diagram of the internal structure of a front support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention; Figure 7 A schematic diagram of the overall structure of a rear support assembly of a platform-based soft-pack battery module provided by an embodiment of the present invention; Figure 8 A schematic diagram of the internal structure of a rear support assembly of a platform-based soft-pack battery module provided in an embodiment of the present invention.

[0050] The present embodiment provides a platform soft-pack battery module 1, comprising: a fixed frame 10, a plurality of soft-pack battery cells 11, a front cover plate assembly 12 and a rear cover plate assembly 13, wherein the fixed frame 10 is a shell pressed by an integrated aluminum profile, specifically, the fixed frame 10 is a square body with a hollow interior and openings at both ends, the interior of the fixed frame 10 has a containing cavity, the soft-pack battery cells 11 are inserted into the containing cavity in the fixed frame 10 at intervals and uniformly, the front and rear ends of the soft-pack battery cells 11 protrude from the containing cavity, one end of the protruding ends of the soft-pack battery cells 11 abuts against the front cover plate assembly 12, and the other end abuts against the rear cover plate assembly 13, the front cover plate assembly 12, the rear cover plate assembly 13 and the fixed frame 10 jointly cover the soft-pack battery cells 11 in the containing cavity.

[0051] It should be noted that in the prior art, the fixing frame used to fix soft-pack batteries is not an integrated structure, but is divided into a bottom frame and an upper frame. After the soft-pack batteries are fixed, the bottom frame and the upper frame are welded together. Moreover, the fixing frame does not have its own fixing equipment inside, and a battery support frame needs to be additionally provided in the fixing frame to fix the soft-pack batteries. At the same time, the soft-pack batteries will generate a large amount of heat when working. In order to dissipate the heat in time, a thermal conductive aluminum plate needs to be provided inside the fixing frame. In this way, the fixing frame not only needs welding processing, but also a thermal conductive aluminum plate and a battery support frame are provided inside the fixing frame. There are many parts and the structure is complex. The soft-pack batteries need to dissipate heat in time when working. If the heat is not dissipated in time, the soft-pack batteries themselves will overheat, which will seriously affect the working efficiency of the soft-pack batteries. However, the internal space of the fixing frame is limited. In addition to the thermal conductive aluminum plate, a battery support frame must be provided. Too many components make the weight of the battery module other than the weight of the battery cell occupy a relatively large proportion, thereby reducing the energy density of the battery module.

[0052] In response to the above problems, in the platform soft-pack battery module 1 provided in the present embodiment, an integrally formed pressed aluminum profile fixing frame 10 is used to fix the soft-pack battery cell 11, and no welding is required. Moreover, the fixing frame 10 uses an aluminum profile to conduct heat directly through the fixing frame 10, and then transfers the heat to the liquid cooling system, avoiding the need to set up a heat-conducting aluminum plate, thereby simplifying the structure of the battery module 1. In fact, carbon fiber or other materials can also be used for the material selection of the fixing frame 10, but the thermal conductivity of these materials is low and cannot be used in liquid cooling systems. Therefore, the present application uses a fixed frame 10 pressed from an aluminum profile.

[0053] The present embodiment provides a platform soft-pack battery module 1, which includes: a fixed frame 10, a plurality of soft-pack battery cells 11, a front cover plate assembly 12 and a rear cover plate assembly 13, wherein the fixed frame 10 is formed by pressing an integrated aluminum profile, a hollow accommodating cavity is provided inside the fixed frame 10, the soft-pack battery cell 11 is inserted into the accommodating cavity of the fixed frame 10, one end of the soft-pack battery cell 11 is against the front cover plate assembly 12, and the other end of the soft-pack battery cell 11 is against the rear cover plate assembly 13, and the front cover plate assembly 12, the rear cover plate assembly 13 and the fixed frame 10 jointly hold the soft-pack battery cell 1 1 is wrapped up. In the prior art, the fixing frame is made of aluminum sheet metal bent and welded, and is divided into a bottom frame and an upper frame. After the soft-pack battery cells are fixed, they are welded together. In addition, a heat-conducting aluminum plate and a battery cell support frame need to be provided, which results in more parts and affects heat dissipation. In the soft-pack battery module 1 provided in this embodiment, the fixing frame 10 is integrally formed, which reduces the welding process. Moreover, there is no heat-conducting aluminum plate and battery cell support frame in the fixing frame 10, which reduces the parts in the battery module 1, makes the grouping method simpler, reduces the cost of the battery module 1, and improves the battery cell grouping efficiency.

[0054] Furthermore, in the present embodiment, a plurality of slots are provided on the inner top wall and the inner bottom wall of the fixed frame 10, the slots 101 are arranged in the fixed frame 10 at relatively intervals, the soft-packed battery cell 11 is inserted in the slots 101, and the soft-packed battery cell 11 is fixed in the fixed frame 10 through the slots 101. At the same time, the slots 101 make direct contact between the soft-packed battery cell 11 and the fixed frame 10. When the soft-packed battery cell 11 is working, the heat generated by the soft-packed battery cell 11 can be transferred to the fixed frame 10 through the slots 101. The soft-pack battery cell 11 is placed on the outer shell and then transferred to the liquid cooling system. Both ends of the soft-pack battery cell 11 protrude outward from the front and rear ends of the fixed frame 10 and respectively rest on the front cover assembly 12 and the rear cover assembly 13, wherein the slot 101 fixes the soft-pack battery cell 11 from the top and bottom of the soft-pack battery cell 11, and the front cover assembly 12 and the rear cover assembly 13 fix the soft-pack battery cell 11 from the front and the rear respectively, and the front cover assembly 12, the rear cover assembly 13 and the slot 101 work together to completely fix the soft-pack battery cell 11 in the fixed frame 10.

[0055] Furthermore, in the present embodiment, the front cover plate assembly 12 includes a front end plate 123, a front isolation plate 122 and a front support assembly 121, the front support assembly 121 covers the front end opening of the fixed frame 10, the front end plate 123 is covered on the front isolation plate 122 and the front support assembly 121, and the front end plate 123 is connected to the fixed frame 10. Specifically, the front end plate 123 and the fixed frame 10 can be connected together by welding, fasteners or fasteners, the front support assembly 121 is connected to the soft-pack battery cell 11, the front isolation plate 122 is between the front support plate assembly and the front end plate 123, and the front isolation plate 122 isolates the front support assembly 121 and the front end plate 123, which actually isolates the front end plate 123 from the soft-pack battery cell 11.

[0056] Further, in the present embodiment, the front support assembly 121 includes: an output copper bar 1214, a series copper bar 1213, a front copper bar support plate 1211 and a battery cell limiting plate 1212, wherein one end of the front copper bar support plate 1211 is connected to the battery cell limiting plate 1212, and the other end of the front copper bar support plate 1211 is connected to the output copper bar 1214 and the series copper bar 1213. Specifically, the battery cell limiting plate 1212 is arranged at one end of the front copper bar support plate 1211 close to the soft-pack battery cell 11, and the output copper bar 1214 and the series copper bar 1213 are arranged Placed on one end of the front copper bar support plate 1211 close to the front isolation plate 122, the output copper bar 1214 and the series copper bar 1213 are arranged in parallel, that is, the output copper bar 1214 and the series copper bar 1213 are arranged side by side on the front copper bar support plate 1211, the series copper bar 1213 is located in the middle of the front copper bar support plate 1211, and the output copper bar 1214 is located on both sides of the series copper bar 1213. The output copper bar 1214 consists of two pieces, which can be regarded as the positive and negative electrodes of the battery module 1, and the series copper bar 1213 is sandwiched between the two output copper bars 1214.

[0057] Furthermore, in the present embodiment, the soft-pack battery cell 11 also includes: a pole ear 111, and the pole ear 111 is located at both ends of the soft-pack battery cell 11. Specifically, the two ends of the soft-pack battery cell 11 protruding outside the fixed frame 10 each have a protrusion, and the protrusion is the pole ear 111. The pole ear 111 is similar to the positive and negative poles of the soft-pack battery cell 11. The pole ear 111 can be inserted into the battery cell limiting plate 1212, so that the position between the soft-pack battery cell 11 and the battery cell limiting plate 1212 is relatively fixed.

[0058] Furthermore, in the present embodiment, the output copper busbar 1214, the series copper busbar 1213, the front copper busbar support plate 1211 and the battery cell limiting plate 1212 are all provided with jacks for the pole ear 111 to be inserted. Specifically, the soft-pack battery cell 11 is inserted into the fixed frame 10, and both ends of the soft-pack battery cell 11 protrude to the outside of the fixed frame 10. Both ends of the protruding pole ear 111 are provided. The pole ear 111 is first inserted into the jack of the battery cell limiting plate 1212 and passes through the battery cell limiting plate 1212 to enter the jack on the front copper busbar support plate 1211. The pole ear 111 1 further passes through the front copper bar support plate 1211 and is finally inserted into the jacks on the series copper bar 1213 and the output copper bar 1214, wherein a plurality of soft-packed cells 11 are arranged in the fixing frame 10, and the tabs 111 of the soft-packed cells 11 located in the middle part of the soft-packed cells 11 are finally inserted into the slots 101 on the series copper bar 1213, and the tabs 111 of the soft-packed cells 11 located on both sides, that is, the leftmost soft-packed cell 11 and the rightmost soft-packed cell 11 are respectively inserted into the jacks of the output copper bar 1214.

[0059] Furthermore, in the present embodiment, a nut 1215 is further provided on the front copper bar support plate 1211, and the copper bar or high-voltage wire outside the battery module and the output copper bar 1214 can be electrically connected to the nut 1215 through bolts. Specifically, a socket for inserting the nut 1215 is provided at the top of the front copper bar support plate 1211, and a socket for inserting the bolt is provided at the top of the output copper bar 1214. The nut 1215 is embedded in the front copper bar support plate 1211, and the socket at the top of the output copper bar 1214 and the threaded hole at the top of the nut 1215 are flush with each other. The output copper bar 1214 is electrically connected to the external copper bar or high-voltage wire of the battery module 1 by fastening with the bolts and the nut 1215.

[0060] Furthermore, in the present embodiment, a fixing hole 1216 is provided on the front isolation plate 122, the front copper busbar support plate 1211 and the battery cell limiting plate 1212. Specifically, a fixing hole 1216 is provided near the middle of the top of the front isolation plate 122, the front copper busbar support plate 1211 and the battery cell limiting plate 1212. The fastener 14 can fasten the front partition plate, the front copper busbar support plate 1211 and the battery cell limiting plate 1212 through the fixing hole 1216.

[0061] Furthermore, in the present embodiment, the rear cover assembly 13 includes: a rear end plate 133, a rear isolation plate 132 and a rear support assembly 131, wherein the rear isolation plate 132 is located between the rear end plate 133 and the rear support assembly 131, the rear support assembly 131 is covered at the rear end opening of the fixed frame 10, and the rear end plate 133 is covered on the rear isolation plate 132 and the rear support assembly 131, the rear end plate 133 is connected to the fixed frame 10 by welding, fastening or clamping, and the rear isolation plate 132 plays an isolation role. Similar to the front cover assembly 12, the soft-pack battery cell 11 is also inserted into the rear support assembly 131, and the rear isolation cover plate is separated between the soft-pack battery cell 11 and the rear end plate 133 to avoid electrical connection between the soft-pack battery cell 11 and the rear end plate 133.

[0062] Furthermore, the rear cover plate assembly 13 includes: a series copper busbar 1213, a rear copper busbar support plate 1311 and a battery cell limiting plate 1212, one end of the rear copper busbar support plate 1311 is connected to the battery cell limiting plate 1212, and the other end of the rear copper busbar support plate 1311 is connected to the series copper busbar 1213, wherein the battery cell limiting plate 1212 faces the fixed frame 10, and the series copper busbar 1213 faces the rear end plate 133, and the pole ear 111 of the soft-pack battery cell 11 can be inserted into the jack on the battery cell limiting plate 1212, and then the pole ear 111 passes through the battery cell limiting plate 1212 and the rear copper busbar support plate 1311 and is inserted into the series copper busbar 1213, and the rear isolation plate 132, The rear support assembly 131 and the battery cell limiting plate 1212 are both provided with fixing holes 1216, and the fixing holes 1216 are set at the top ends of the rear isolation plate 132, the rear support assembly 131 and the battery cell limiting plate 1212. The fasteners 14 can fasten the rear isolation plate 132, the rear support assembly 131 and the battery cell limiting plate 1212 through the fixing holes 1216. The rear end plate 133 is covered on the rear isolation plate 132 and the rear copper busbar support plate 1311. The rear end plate 133 can be welded, fastened or clamped in the fixed frame 10. The rear end plate 133 clamps the rear isolation plate 132 and the rear copper busbar support plate 1311 between the rear end plate 133 and the fixed frame 10.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A platform soft pack battery module, characterized in that: include: A fixing frame, a plurality of soft-packed cells, a front cover plate assembly and a rear cover plate assembly, wherein the plurality of soft-packed cells are inserted into the fixing frame at intervals, and one end of the soft-packed cells abuts against the front cover plate assembly, and the other end of the soft-packed cells abuts against the rear cover plate assembly; The front cover plate assembly includes a front support assembly, which includes: an output copper bar, a series copper bar and a front copper bar support plate, one end of the front copper bar support plate is connected to the output copper bar and the series copper bar, and the series copper bar and the output copper bar are arranged in parallel at one end of the front copper bar support plate, and the series copper bar is located in the center of the front copper bar support plate, and the output copper bar is located on both sides of the series copper bar; The front copper bar support plate is also provided with a nut, and the copper bar or high-voltage wire outside the battery module and the output copper bar can be electrically connected to the nut through bolts. The top of the front copper bar support plate is provided with a socket for the nut to be inserted, and the top of the output copper bar is provided with a socket for the bolt to be inserted. The nut is embedded in the front copper bar support plate, and the socket at the top of the output copper bar and the threaded hole at the top of the nut are flush with each other.

2. The battery module according to claim 1, characterized in that: The inner top wall and the inner bottom wall of the fixed frame are both provided with a plurality of relative slots, the soft-pack battery cells are inserted into the slots, and both ends of the soft-pack battery cells protrude outward from the front and rear ends of the fixed frame and abut against the front cover plate assembly and the rear cover plate assembly.

3. The battery module according to claim 2, characterized in that: The front cover plate assembly also includes a front end plate and a front isolation plate, wherein the front isolation plate is located between the front end plate and the front support assembly, the front support assembly cover is arranged at the front end opening of the fixed frame, and the front end plate cover is arranged on the front isolation plate and the front support assembly and is connected to the fixed frame.

4. The battery module according to claim 3, characterized in that: The front support assembly also includes a battery cell limiting plate, and the other end of the front copper bar support plate is connected to the battery cell limiting plate.

5. The battery module according to claim 4, characterized in that: The soft-pack battery cell further includes: pole ears, which are located at two ends of the soft-pack battery cell, the pole ears protrude out of the fixing frame, and the pole ears can be inserted into the battery cell limiting plate.

6. The battery module according to claim 5, characterized in that: The output copper bar, the series copper bar, the front copper bar support plate and the battery cell limiting plate are provided with plugging holes for the pole tabs to be inserted, and the pole tabs can pass through the battery cell limiting plate and the front copper bar support plate and be connected to the output copper bar and the series copper bar.

7. The battery module according to claim 6, characterized in that: The front isolation plate, the front copper bar support plate and the battery cell limiting plate are all provided with fixing holes, and fasteners fasten and connect the isolation plate, the front copper bar support plate and the battery cell limiting plate through the fixing holes.

8. The battery module according to claim 2, characterized in that: The rear cover plate assembly includes: a rear end plate, a rear isolation plate and a rear support assembly, wherein the rear isolation plate is located between the rear end plate and the rear support assembly, the rear support assembly cover is arranged on the rear end opening of the fixed frame, and the rear end plate cover is arranged on the rear isolation plate and the rear support assembly and is connected to the fixed frame.

9. The battery module according to claim 8, characterized in that: The rear support assembly includes: a series copper bar, a rear copper bar support plate and a battery cell limiting plate, one end of the rear copper bar support plate is connected to the series copper bar, the other end of the rear copper bar support plate is connected to the battery cell limiting plate, the pole ear on the other end of the soft-pack battery cell passes through the battery cell limiting plate and the rear copper bar support plate to be connected to the series copper bar, the rear copper bar support plate, the rear isolation plate and the battery cell limiting plate are provided with fixing holes, and fasteners fasten the rear copper bar support plate, the rear isolation plate and the battery cell limiting plate through the fixing holes, and the rear end plate is connected to the fixed frame.

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