Battery module

Abstract

The invention relates to the technical field of batteries, in particular to a battery module which comprises a plurality of battery module frame units, a wire outlet groove is formed in the position, corresponding to the position between the two pole columns, of the battery module frame unit; the acquisition line comprises a trunk part and a tree-shaped branch extending from the trunk part; and when the trunk part falls into the outgoing line, the tree-shaped branches are respectively lapped on the jumper sheets at the two sides to collect the voltage information of the corresponding point positions. In order to solve the problem that a battery module in the prior art is relatively difficult to connect a voltage acquisition line, a node for connecting the acquisition line is arranged on a jumper. The poles are distributed left and right along the short axis direction of the module, so that the trunk part of the acquisition line can be arranged between the poles, and the tree-shaped parts extending from the two sides are connected with the jumper. On the basis of the arrangement, the path of the acquisition line is relatively short, direct arrangement is facilitated, nearby welding can be directly carried out between the jumper and the pole and between the tree-shaped branch and the jumper during welding, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery module. Background Art

[0002] Energy storage battery is a device based on lithium-ion battery that can store and supply electric energy through charging and discharging. Usually, lithium iron phosphate battery or other equivalent battery components are selected to achieve this. Due to the material constraints of lithium-ion batteries themselves, the discharge voltage of a single lithium-ion battery is often in the range of 3.2v-3.45V, which is difficult to meet the needs of related high-power equipment, such as commercial uninterruptible power supplies, new energy vehicles, etc. Therefore, in actual use, it is often necessary to connect multiple lithium-ion battery cells in series to increase the voltage and total capacity to form an overall module for use. At the same time, due to the relatively simple structure of the battery cell itself, it is often difficult to directly meet the relevant industrial protection requirements during use, such as pressure resistance and impact resistance. Therefore, the outer shell of the battery module in the prior art often needs to assume part of the protective function.

[0003] For example, in the prior art, Chinese patent CN202211106237.9 discloses a battery module, which relates to the field of battery technology. The battery module includes a battery cell and a heat dissipation exhaust assembly, and the heat dissipation exhaust assembly includes a liquid cooling plate and an exhaust plate arranged side by side. The battery cell is arranged on the liquid cooling plate and the exhaust plate, and a liquid cooling channel is arranged in the liquid cooling plate, and an exhaust channel is arranged in the exhaust plate. The surface of the liquid cooling plate is bonded to the surface of the battery cell by a thermal conductive adhesive or a thermal conductive structural adhesive. An exhaust through hole is opened on the exhaust plate, and the exhaust through hole is connected to the exhaust channel. A pressure relief hole is arranged on the battery cell, and the exhaust through hole is opposite to the pressure relief hole to receive the gas released from the pressure relief hole. The heat dissipation exhaust assembly includes a liquid cooling channel and an exhaust channel that are independent of each other, so that heat dissipation and pressure relief can be taken into account. By arranging a thermal conductive adhesive or a thermal conductive structural adhesive on the surface of the liquid cooling plate, it can not only fix the battery cell, but also enhance the heat dissipation of the battery cell, so it has a better heat dissipation effect.

[0004] For another example, Chinese patent CN202410458755.X discloses a battery module. The battery module includes: a battery pack, a structural frame, a first sealing plate and a second sealing plate; the battery pack is composed of multiple groups of cells arranged in parallel, each group of cells includes a first cell and a second cell and there is a first interval between the first cell and the second cell, and the first interval in each group of cells forms a first air duct; there is a second interval between two adjacent groups of cells; the structural frame includes a first module side wall surface and a second module side wall surface, the first module side wall surface and the second module side wall surface are respectively arranged on both sides of the battery pack, and there is a third interval with both sides of the battery pack, the third interval forms a second air duct, and the second interval connects the first air duct and the second air duct; the first sealing plate is arranged at the air inlet end of the first air duct, used to seal the air inlet end of the first air duct; the second sealing plate is arranged at the air outlet end of the second air duct, used to seal the air outlet end of the second air duct. The battery module can improve the temperature uniformity of the cells in the battery module.

[0005] However, during the actual implementation process, the inventors found that in this type of technical solution, the battery cells are usually stacked. In order to realize the monitoring of the battery pack, such as the monitoring of the battery voltage, it is necessary to design the acquisition line and lead it out. If the routing design in the module is unreasonable, it will lead to subsequent wiring difficulties and increase the working hours. Summary of the invention

[0006] In view of the above problems existing in the prior art, a battery module is now provided.

[0007] The specific technical solutions are as follows:

[0008] A battery module comprises a plurality of battery module frame units;

[0009] The battery module frame unit is a hollow rectangle in the front view direction;

[0010] The battery module frame unit is used to place a matching battery cell;

[0011] The pole of the battery cell is arranged upward;

[0012] A pole avoidance hole is provided above the battery module frame unit at a position corresponding to the pole, so that the pole is exposed;

[0013] A plurality of the battery module frame units are connected in series to form the battery module;

[0014] The poles of two adjacent battery cells face opposite directions;

[0015] The pole is connected to the pole of another group of adjacent cells through a jumper piece above the battery module frame unit;

[0016] The battery module frame unit is provided with an outgoing line groove at a position corresponding to between two pole columns;

[0017] The acquisition line includes a main trunk part and dendritic branches extending from the main trunk part;

[0018] When the main trunk part falls into the outgoing line, the dendritic branches are respectively lapped on the bridging pieces on both sides to acquire voltage information of corresponding points.

[0019] On the other hand, the battery module frame unit includes a left vertical column, a right vertical column and a frame back plate;

[0020] The left vertical column and the right vertical column are arranged on both sides of the battery cell in the vertical direction;

[0021] The frame is arranged to fit the front surface or the back surface of the battery cell;

[0022] The left and right sides of the frame back plate are respectively connected to the left vertical column and the right vertical column;

[0023] The cross section of the frame back plate is in a C shape;

[0024] The bottom surface of the frame back plate fits the bottom of the battery cell;

[0025] The top structure of the frame back plate is in the shape of a long cube;

[0026] The top structure of the frame back plate and the left vertical column and the right vertical column respectively form the pole column avoidance holes;

[0027] An outgoing line groove is arranged above the top structure of the frame back plate.

[0028] On the other hand, gaskets are arranged in the vertical direction at the turning points between the frame back plate and the left vertical column and between the frame back plate and the right vertical column;

[0029] The gaskets respectively abut against the battery cell to fix the battery cell;

[0030] The plane formed by the left vertical column and the right vertical column on the side far from the frame back plate has a preset interval relative to the surface of the battery cell.

[0031] On the other hand, on the side of the left vertical column and the right vertical column close to the frame back plate, a plurality of alignment holes are distributed in the vertical direction;

[0032] On the side of the left vertical column and the right vertical column far from the frame back plate, a plurality of alignment protrusions are distributed in the vertical direction corresponding to the alignment holes;

[0033] The alignment protrusion matches the alignment hole to restrict the misalignment between the battery module frame units.

[0034] On the other hand, the alignment holes and the alignment protrusions are provided in three pairs on the left and right sides respectively;

[0035] The left column and the right column are respectively provided with four pull rod through holes;

[0036] The pull rod through hole and the alignment hole are arranged at intervals;

[0037] When a plurality of the battery module frame units are combined, the external hexagonal threaded tie rod passes through the tie rod through hole;

[0038] The two ends of the threaded pull rod are respectively provided with screw holes, and the effective thread depth is 20mm;

[0039] The fixing screws are screwed into the screw holes and apply pressure to the battery module frame unit at both ends to fix it.

[0040] On the other hand, it also includes pull plates;

[0041] The pull plate is in the shape of a long cube;

[0042] The pull plates are respectively located in front of the frontmost battery module frame unit and behind the rearmost battery module frame unit;

[0043] The pull plate is provided with a grid-shaped reinforcing rib surface on the outer side relative to the battery module frame unit;

[0044] The pull plate is provided with a corresponding pull rod through hole at a position corresponding to the pull rod through hole;

[0045] The threaded pull rod passes through the pull rod through hole, and the fixing screw abuts against the pull plate to apply pressure and provide module tightening size limitation for the battery module.

[0046] The threaded pull rod can be set according to the length;

[0047] On the other hand, the pull plate is provided with terminal fixing grooves at the upper part close to the pole;

[0048] The terminal fixing slots are located on the left and right sides respectively;

[0049] The terminal fixing groove is a groove formed on the inner side of the pull plate close to the battery cell and protruding outward;

[0050] A wiring board is fixed in the wiring post fixing slot;

[0051] The wiring board is in the shape of a long cube and is made of metal;

[0052] The wiring board is fixedly welded to the pole on the nearest battery cell inside;

[0053] Two wiring board openings are provided in the lower plate part of the wiring board;

[0054] A wiring post through-hole is provided in the wiring post fixing groove at a position corresponding to the opening; the wiring post passes through the wiring post through-hole and is screwed into the wiring board opening by a thread.

[0055] On the other hand, the frame back plate extends upward by a preset step height at a position corresponding to the pole avoidance hole;

[0056] The jumper is in a U-shape;

[0057] The two bottom feet of the jumper are respectively in contact with the upper surface of the pole;

[0058] The protruding part of the jumper has the preset step height relative to the bottom feet;

[0059] A lead-out piece bump is further provided on the upper surface of the jumper;

[0060] The number of the lead-out piece bumps is two, and they are horizontally distributed on the upper surface of the jumper;

[0061] The lead-out piece bump is in the shape of a screw;

[0062] A lead-out piece is clamped between the lead-out piece bump and the upper surface of the jumper;

[0063] The lead-out piece is in a Z-shape;

[0064] A fixing groove is provided on the lower piece of the lead-out piece;

[0065] The fixing groove is clamped into the lead-out piece bump;

[0066] A wiring groove is provided on the upper piece of the lead-out piece;

[0067] The wiring groove is fixed to the tree-like branches of the collection line.

[0068] On the other hand, it further includes an upper cover;

[0069] Upper cover fixing holes are respectively provided at the tops of the left upright column and the right upright column;

[0070] Openings are provided on the upper cover at positions corresponding to the upper cover fixing holes;

[0071] The upper cover is fixed to the upper cover fixing holes by screws.

[0072] The above technical solution has the following advantages or beneficial effects:

[0073] In view of the problem that it is relatively difficult to connect the voltage collection line to the battery module in the prior art, in this embodiment, on the basis of stacking the battery cells horizontally and placing the battery poles uniformly upward, the order of stacking the battery cells is adjusted so that the poles of the battery cells can be connected nearby through jumpers; accordingly, nodes for connecting the collection line are set on the jumpers. Since the poles are distributed left and right along the short axis direction of the module, the collection line can set the main part between the poles, and the tree-like parts extending on both sides are connected to the jumpers. Based on the above settings, the collection line path can be shorter and convenient for direct setting. During welding, the jumper and the pole, the tree-like branch and the jumper can also be directly welded nearby to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The embodiments of the present invention will be described more fully with reference to the attached drawings, which are provided for illustration and description only and are not intended to limit the scope of the present invention.

[0075] Figure 1 A schematic diagram of a battery module frame unit assembly according to an embodiment of the present invention;

[0076] Figure 2 A schematic diagram of a first side of a battery module frame unit according to an embodiment of the present invention;

[0077] Figure 3 A second side schematic diagram of a battery module frame unit according to an embodiment of the present invention;

[0078] Figure 4 A schematic diagram of a pull rod according to an embodiment of the present invention;

[0079] Figure 5 A schematic diagram of a pull plate according to an embodiment of the present invention;

[0080] Figure 6 A partial schematic diagram of a pull plate according to an embodiment of the present invention;

[0081] Figure 7 A schematic diagram of an upper cover according to an embodiment of the present invention; DETAILED DESCRIPTION

[0082] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.

[0083] In the description of this specification, 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 this specification and simplifying the description, and do not indicate or imply 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 a limitation on this specification.

[0084] In this specification, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this specification can be understood according to specific circumstances.

[0085] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0086] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0087] The present invention comprises:

[0088] A battery module, such as Figure 1-7 As shown, it includes a plurality of battery module frame units 1;

[0089] The battery module frame unit 1 is a hollow rectangle in the front view direction;

[0090] The battery module frame unit 1 is used to place a matching battery cell 2;

[0091] The pole 21 of the battery cell 2 is arranged upward;

[0092] A pole avoidance hole is provided above the battery module frame unit 1 at a position corresponding to the pole, so that the pole 21 is exposed;

[0093] A plurality of battery module frame units 1 are connected in series to form a battery module;

[0094] The poles 21 of two adjacent battery cells 2 face in opposite directions;

[0095] The pole 21 is connected to the pole 21 of another group of adjacent cells through the jumper 3 above the battery module frame unit 1;

[0096] The battery module frame unit 1 is provided with an outgoing line groove 4 at a position corresponding to between two pole columns 21;

[0097] The acquisition line includes a main trunk part and dendritic branches extending from the main trunk part;

[0098] When the main trunk part falls into the outgoing line, the dendritic branches are respectively lapped on the jumper pieces 3 on both sides to acquire voltage information of corresponding points.

[0099] Specifically, aiming at the problem that it is relatively difficult to connect the voltage acquisition line in the existing battery module, in this embodiment, on the basis that the battery cells 2 are horizontally stacked and the battery pole columns 21 are uniformly placed upwards, by adjusting the stacking order of the battery cells, the pole columns of the battery cells can be connected nearby through the jumper pieces.

[0100] Specifically, from the perspective shown in the figure, to achieve the series connection of multiple battery cells 2, the positive electrode of the first battery cell can be configured to face left and the negative electrode to face right, the negative electrode of the second battery cell to face left and the positive electrode to face right, the positive electrode of the third battery cell to face left and the negative electrode to face right, and so on. And the pole columns 21 of multiple battery cells 2 are all placed upwards. Then when the battery cells 2 are connected in series, the positive and negative electrodes of adjacent pairs of battery cells 2 can be sequentially connected through the jumper pieces 3 to achieve a shorter access path.

[0101] Correspondingly, to meet the protection requirements for the battery cells 2, in this embodiment, a battery module frame unit 1 is provided for fixing the battery cells 2 and serving as a structural stress-bearing member.

[0102] Specifically, the battery module frame unit 1 includes a left vertical column 11, a right vertical column 12 and a frame back plate 13;

[0103] The left vertical column 11 and the right vertical column 12 are arranged on both sides of the battery cell 2 in the vertical direction;

[0104] The frame back plate 13 is arranged to fit the front surface or the back surface of the battery cell;

[0105] The left and right sides of the frame back plate 13 are respectively connected to the left vertical column and the right vertical column;

[0106] The cross section of the frame back plate 13 is in a C shape;

[0107] The bottom surface of the frame back plate 13 fits the bottom of the battery cell 2;

[0108] The top structure of the frame back plate 13 is in the shape of a long cube;

[0109] The top structure of the frame back plate 13 and the left vertical column 11 and the right vertical column 12 are combined to form a pole column avoidance hole;

[0110] An outgoing line groove 4 is arranged above the top structure of the frame back plate 13.

[0111] Based on the above settings, the left and right sides of the battery cell 2 are fixed by the left upright post 11 and the right upright post 12, and a relatively large surface of the battery cell 2 is arranged in contact with the frame backplane 13. The cross-section of the frame backplane 13 is in a U shape, its lower bottom surface is in contact with the bottom of the battery cell 2, and its top structure is in the shape of a long cube, with one end extending from the top of the main structure of the frame backplane 13 to the other side and stopping when approaching the edges of the left upright post 11 and the right upright post 12.

[0112] This structure respectively encloses a pole avoidance hole with the left upright post 11 and the right upright post 12, and the pole 21 of the battery cell 2 passes through the pole avoidance hole to reach the upper side. Correspondingly, the jumper 3 needs to cross over the frame backplane 13 to connect the battery cells 2 in another set of battery module frame units 1.

[0113] On this basis, multiple battery module frame units 1 are arranged in sequence, stacked through the left upright post 11 and the right upright post 12 on the left and right sides and serving as the main stress-bearing structure, and the movement of the battery cells is restricted by the frame backplane 13, so that the battery cell 2 has good mechanical properties after being assembled into a module and meets the relevant compressive and protection requirements.

[0114] In addition, for the problem in the prior art that a collection line needs to be set for a battery pack and the process of manually connecting the collection line is relatively cumbersome and time-consuming. In this embodiment, above the above-mentioned top structure, an outgoing wire groove 4 is provided for placing the collection line.

[0115] Specifically, the collection line is a collection line for detecting the output voltage between the battery cells 2 in the battery module. To achieve this collection process, multiple collection sub-lines are set in the collection line according to the number of series-connected battery cells 2, and one end of each collection sub-line extends through a tree-like branch and is connected to the corresponding point.

[0116] The end of the collection sub-line that needs to be led out is placed in the armored structure of the collection line, bundled together and fixed in the outgoing wire groove 4, and centrally led out from one end of the battery module.

[0117] Due to the above settings, the collection line is located on the side close to the pole 21 and the jumper 3, a shorter wiring sequence can be achieved, and the above-mentioned points are all above the battery module, which is convenient for carrying out relevant processes.

[0118] Generally speaking, after putting multiple battery cells 2 into the battery module frame unit 1, arranging and combining the battery module frame units 1, at this time the poles 21 are naturally exposed above. Place the jumper 3 according to a specific sorting, and then snap the collection line into the outgoing wire groove 4, and the tree-like branches will automatically fall onto the jumpers 3 in the corresponding directions.

[0119] Then welding is performed, and the welding points include the connection points between the jumper 3 and the poles 21 on both sides, and the connection points between the jumper 3 and the tree branches. The above three connection points are located close to each other, which can achieve higher welding efficiency.

[0120] In one embodiment, a gasket is provided in the vertical direction between the turning point between the frame back plate 13 and the left column 11 and between the turning point between the frame back plate 13 and the right column 12;

[0121] The gaskets are respectively against the battery cells to fix the battery cells 2;

[0122] The plane formed by the left column 11 and the right column 12 on the side away from the frame back plate 13 has a preset interval relative to the surface of the battery cell 2;

[0123] This preset spacing is compatible with the assembly of single cells with an oversized thickness of +4mm, and the bulging part is not subject to the extrusion pressure of the module shaping, achieving high safety and reliability.

[0124] Specifically, in order to achieve better safety, in this embodiment, pads are arranged in the vertical direction between the turning point between the frame back plate 13 and the left column 11 and between the turning point between the frame back plate 13 and the right column 12. When the battery cell 2 is installed into the battery module frame unit 1, the battery cell is actually fixed by contacting the pads with two vertical edges, and does not directly abut against the frame back plate 13.

[0125] Furthermore, the plane formed by the left column 11 and the right column 12 on the side away from the frame back plate 13 has a preset interval, such as 1.5 mm, relative to the surface of the battery cell 2. Combined with the gap on the other side, the static distance between the multiple battery cells 2 is enlarged to 4 mm. When a battery cell fails and expands, the battery cell 2 on the other side can be avoided from being squeezed, thereby improving safety.

[0126] In one embodiment, the left column 11 and the right column 12 have a plurality of alignment holes 14 or alignment protrusions 15 distributed along the vertical direction on one side close to the frame back plate 13;

[0127] The left column 11 and the right column 12 have a plurality of alignment protrusions 15 or alignment holes 14 distributed on a side away from the frame back plate 13 and corresponding to the alignment holes 14 in the vertical direction;

[0128] The alignment protrusions 15 match the alignment holes 14 to restrict the misalignment between the battery module frame units 1 .

[0129] Specifically, in order to facilitate the assembly of the battery module frame unit, in this embodiment, a pair of alignment protrusions 15 and alignment holes 14 are designed.

[0130] Specifically, the left column 11 and the right column 12 have a plurality of alignment holes 14 distributed along the vertical direction on a side close to the frame back plate 13 , and a plurality of alignment protrusions 15 distributed along the vertical direction corresponding to the alignment holes 14 on a side away from the frame back plate 13 .

[0131] The alignment protrusion 15 and the alignment hole 14 are cylindrical structures obtained by punching on plastic. When combined, the two marks are aligned and nested to achieve splicing of the battery module frame unit 1.

[0132] In the illustrated embodiment, the alignment protrusions 15 and the alignment holes 14 provided on the same surface of the left column 11 and the right column 12 have different directions.

[0133] In one embodiment, three pairs of alignment holes 14 and alignment protrusions 15 are respectively provided on the left and right sides;

[0134] Four tie rod through holes 16 are also provided on the left column 11 and the right column 12 respectively;

[0135] The pull rod through hole 16 and the alignment hole 14 are arranged at intervals;

[0136] When multiple battery module frame units 1 are combined, the external hexagonal threaded tie rod passes through the tie rod through hole 16;

[0137] There are screw holes at both ends of the threaded tie rod, and the effective thread depth is 20mm;

[0138] The fixing screws are screwed into the screw holes and pressure is applied to the battery module frame unit 1 at both ends to fix it.

[0139] Specifically, in order to effectively fix the battery module frame unit 1, in this embodiment, on the basis of the alignment hole 14 and the alignment protrusion 15, tie rod through holes 16 are arranged at intervals. When multiple battery module frame units 1 are combined, the tie rod through holes 16 are aligned, so that a slightly shorter threaded tie rod of corresponding length can pass through the tie rod through hole 16. Screw holes are respectively arranged at both ends of the threaded tie rod, and corresponding fixing screws can be screwed in.

[0140] The nut of the fixing screw is close to one side of the battery module frame unit 1, forming a larger plane. When the threaded pull rod passes through the pull rod through hole 16, the fixing screw is screwed into the screw hole, and the nut is abutted against the battery module frame unit 1, and pressure is applied by tightening to clamp the battery module frame unit 1.

[0141] In one embodiment, a pull plate 5 is also included;

[0142] The pull plate 5 is in the shape of a long cube;

[0143] The pull plates 5 are respectively located in front of the frontmost battery module frame unit 1 and behind the rearmost battery module frame unit 1;

[0144] The pull plate 5 is provided with a grid-shaped reinforcing rib surface on the outer side relative to the battery module frame unit 1;

[0145] The pull plate 5 is provided with a corresponding pull rod through hole 16 at a position corresponding to the pull rod through hole 16;

[0146] The threaded pull rod passes through the pull rod through hole 16, and the fixing screw abuts against the pull plate 5 to apply pressure.

[0147] Specifically, in order to achieve a better tightening effect, a pull plate 5 is further provided in this embodiment to apply a more uniform pressure to the battery module frame unit 1 when clamping. The pull plate 5 is in the shape of a long cube, and is respectively located in front of the frontmost battery module frame unit 1 and behind the rearmost battery module frame unit 1, and forms a larger contact surface with the battery module frame unit 1.

[0148] At this time, the threaded pull rod passes through the pull rod through hole 16 , and the fixing screw abuts against the pull plate 5 to apply pressure. The screw stress is concentrated on the screw hole of the pull plate 5 , and the pull plate 5 applies a relatively uniform pressure to the battery module frame unit 1 .

[0149] The threaded tie rod can be set according to the length and used as a limit to tighten the module size.

[0150] In one embodiment, the pull plate 5 is provided with a terminal fixing groove 51 at the upper part close to the pole;

[0151] The terminal fixing slots 51 are located on the left and right sides respectively;

[0152] The terminal fixing groove 51 is a groove formed on the inner side of the pull plate 5 close to the battery cell and protrudes outward;

[0153] A wiring board 52 is fixed in the wiring post fixing slot 51;

[0154] The wiring board 52 is in the shape of a long cube and is made of metal;

[0155] The terminal plate 52 is welded and fixed to the pole 21 on the innermost battery cell 2;

[0156] The lower plate portion of the terminal block 52 is provided with two terminal block openings;

[0157] The terminal fixing groove 53 is provided with a terminal through hole at a position corresponding to the opening;

[0158] The terminal post passes through the terminal post through hole and is screwed into the terminal block opening through a thread.

[0159] Specifically, to achieve the connection between the positive and negative electrodes, in this embodiment, on the upper half of the pull plate 5 near the pole column, terminal fixing grooves 51 are respectively provided. The terminal fixing grooves 51 are located on the left and right sides respectively, and a terminal board 52 is clamped inside. The terminal board 52 is made of metal and is welded and fixed to the pole column 21 on the nearest inner cell 2. A terminal through hole is provided in the terminal fixing groove 53 at the position corresponding to the opening, so that the terminal board 52 is exposed and can be wired to external copper bars and other structures to achieve output.

[0160] In one embodiment, the frame back plate 13 extends upward by a preset step height at the position corresponding to the pole column avoidance hole;

[0161] The jumper 3 is in a shape of a capital letter "J";

[0162] The two bottom feet of the jumper 3 are respectively in contact with the upper surface of the pole column 21;

[0163] The protruding part of the jumper 3 has a preset step height relative to the bottom feet;

[0164] The upper surface of the jumper 3 is further provided with lead-out piece bumps;

[0165] The number of the lead-out piece bumps is two, and they are horizontally distributed on the upper surface of the jumper 3;

[0166] The lead-out piece bumps are in the shape of screws;

[0167] A lead-out piece 31 is clamped between the lead-out piece bump and the upper surface of the jumper;

[0168] The lead-out piece 31 is in a shape of a capital letter "Z";

[0169] A fixing groove is provided on the lower piece of the lead-out piece 31;

[0170] The fixing groove is clamped into the lead-out piece bump;

[0171] A wiring groove is provided on the upper piece of the lead-out piece 31;

[0172] The wiring groove is fixed to the tree-like branches of the collecting wire.

[0173] Specifically, for the convenience of welding the collecting wire, in this embodiment, a lead-out piece 31 is also clamped on the upper surface of the jumper 3 through the lead-out piece bump for connecting the collecting wire.

[0174] In one embodiment, as Figure 7 shown, it further includes an upper cover 6;

[0175] Upper cover fixing holes are respectively provided at the tops of the left upright column 11 and the right upright column 12;

[0176] The upper cover 7 is provided with openings at the positions corresponding to the upper cover fixing holes;

[0177] The upper cover 7 is fixed to the upper cover fixing holes by screws.

[0178] The terms used in the embodiments of this specification are only for the purpose of describing specific embodiments and are not intended to limit this specification. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification should be understood by people with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0179] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module, characterized in that: It includes a plurality of battery module frame units; The battery module frame unit is a hollow rectangle in the front view direction; One matching battery cell is placed in the battery module frame unit; The pole posts of the battery cell are arranged upward; A pole post avoidance hole is opened at the position corresponding to the pole post above the battery module frame unit so that the pole post is exposed; A plurality of the battery module frame units are connected in series to form the battery module; The pole posts of two adjacent battery cells face in opposite directions; The pole posts of the battery cells are connected to the pole posts of another group of adjacent battery cells through jumper plates above the battery module frame unit; The battery module frame unit is provided with an outgoing line groove at the position corresponding to between two pole posts; The acquisition line includes a main trunk part and tree-like branches extending from the main trunk part; When the main trunk part falls into the outgoing line, the tree-like branches are respectively lapped on the jumper plates on both sides to acquire voltage information of corresponding points.

2. The battery module according to claim 1, characterized in that: The battery module frame unit includes a left upright post, a right upright post and a frame back plate; The left upright post and the right upright post are arranged on both sides of the battery cell along the vertical direction; The frame is arranged to fit the front surface or the back surface of the battery cell; The left and right sides of the frame back plate are respectively connected to the left upright post and the right upright post; The cross section of the frame back plate is in a C shape; The lower bottom surface of the frame back plate fits the bottom of the battery cell; The top structure of the frame back plate is in the shape of a long cube; The top structure of the frame back plate and the left upright post and the right upright post respectively form the pole post avoidance hole; The outgoing line groove is arranged above the top structure of the frame back plate; 3. The battery module according to claim 2, characterized in that: Gaskets are arranged along the vertical direction at the turning points between the frame back plate and the left upright post and between the frame back plate and the right upright post; The gaskets respectively abut against the battery cell to fix the battery cell; The plane formed by the left upright post and the right upright post on the side far from the frame back plate has a preset interval relative to the surface of the battery cell; 4. The battery module according to claim 2, characterized in that: On the side of the left upright post and the right upright post close to the frame back plate, a plurality of alignment holes are distributed along the vertical direction; On the side of the left upright post and the right upright post far from the frame back plate, a plurality of alignment protrusions are distributed along the vertical direction corresponding to the alignment holes; The alignment protrusions match the alignment holes to restrain the dislocation between the battery module frame units; 5. The battery module according to claim 4, characterized in that: Three pairs of the alignment holes and the alignment protrusions are respectively arranged on the left and right sides; Four pull rod through holes are respectively arranged on the left upright post and the right upright post; The pull rod through holes are arranged at intervals from the alignment holes; When a plurality of the battery module frame units are combined, an external hexagonal threaded pull rod passes through the pull rod through holes; Screw holes are respectively arranged at both ends of the threaded pull rod, and the effective thread depth is 20 mm; Fixing screws are screwed into the screw holes and apply pressure to the battery module frame units at the head and tail ends for fixation.

6. The battery module according to claim 5, characterized in that: It further includes a pull plate; The pull plate is in the shape of a long cube; The pull plate is respectively located in front of the battery module frame unit at the forefront and behind the battery module frame unit at the rearmost end; The pull plate is provided with a grid-shaped ribbed surface on the outer side relative to the battery module frame unit; The pull plate is provided with a corresponding pull rod through hole at a position corresponding to the pull rod through hole; The threaded pull rod passes through the pull rod through hole, and the fixing screw abuts against the pull plate to apply pressure and provide a module tightening size limit for the battery module.

7. The battery module according to claim 6, characterized in that: The pull plate is respectively provided with terminal post fixing grooves in the upper half close to the pole post; The terminal post fixing grooves are respectively located on the left and right sides; The terminal post fixing groove is a groove protruding outward formed on the inner side of the pull plate close to the battery cell; A terminal board is clamped in the terminal post fixing groove; The terminal board is in the shape of a long cube and is made of metal; The terminal board is welded and fixed to the pole post on the nearest battery cell on the inner side; Two terminal board through holes are provided in the lower plate part of the terminal board; The terminal post fixing groove is provided with a terminal post through hole at a position corresponding to the through hole; the terminal post passes through the terminal post through hole and is screwed into the terminal board through hole by a thread.

8. The battery module according to claim 2, characterized in that: The frame back plate extends upward by a preset step height at a position corresponding to the pole post avoidance hole; The jumper is in a U-shape; The two bottom feet of the jumper respectively contact the upper surface of the pole post; The protruding part of the jumper has the preset step height relative to the bottom feet; The upper surface of the jumper is further provided with lead-out piece bumps; The number of the lead-out piece bumps is two, and they are horizontally distributed on the upper surface of the jumper; The lead-out piece bumps are in the shape of screws; A lead-out piece is clamped between the lead-out piece bumps and the upper surface of the jumper; The lead-out piece is in a Z-shape; A fixing groove is provided on the lower piece of the lead-out piece; The fixing groove is clamped into the lead-out piece bumps; A wiring groove is provided on the upper piece of the lead-out piece; The wiring groove is fixed to the tree-shaped branches of the acquisition line.

9. The battery module according to claim 1, characterized in that: It further includes an upper cover; Upper cover fixing holes are respectively provided at the tops of the left upright post and the right upright post; The upper cover is provided with through holes at positions corresponding to the upper cover fixing holes; The upper cover is fixed to the upper cover fixing holes by screws.

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