Battery structure, battery module and battery pack

Abstract

The utility model relates to the technical field of energy storage batteries, and discloses a battery structure, a battery module and a battery pack. The conducting bar is of a bent structure, the first end of the conducting bar is arranged corresponding to the plane where the pole is located and is welded to the pole, the second end of the conducting bar is arranged corresponding to the side face of the battery cell and forms a preset angle with the side face of the battery cell, and the second end of the conducting bar is provided with a mounting hole; fasteners are suitable for penetrating into the mounting holes. According to the utility model, the conducting bar is arranged on the battery cell, and the mounting hole allowing the fastener to penetrate is formed in the conducting bar, so that the two adjacent battery structures are detachably connected while the electric connection of the two adjacent battery structures is realized, and the independent disassembly and maintenance of the battery structures are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, and in particular to a battery structure, a battery module and a battery pack. Background Art

[0002] The main function of power batteries is to store electrical energy and provide it when needed. For electric vehicles, power batteries are the core components of electric vehicles and directly affect the vehicle's range and performance. With the continuous advancement of technology and the continuous expansion of application scenarios, battery energy storage technology is also being applied in more fields.

[0003] In order to simplify the design and reduce costs, current power batteries and energy storage systems simplify the design of structural parts, place modules directly into the box, and adopt CTP (Cell to PACK) technology and aluminum bar welding connection solutions.

[0004] However, for a battery pack using this solution, when a single cell fails, all cells in the entire battery need to be replaced, which makes the disassembly process complicated and maintenance difficult. Utility Model Content

[0005] In view of this, the utility model provides a battery structure, a battery module and a battery pack to solve the problem of complex disassembly and difficult maintenance when a single battery cell fails.

[0006] In the first aspect, the utility model provides a battery structure, including: a battery cell, which is provided with a pole; a conductive bar, which is a bent structure, wherein the first end of the conductive bar is arranged corresponding to the surface where the pole is located and is welded to the pole, the second end of the conductive bar corresponds to the side surface of the battery cell and is arranged at a predetermined angle to the side surface of the battery cell, and the second end of the conductive bar is provided with a mounting hole, and the mounting hole is suitable for inserting a fastener.

[0007] Beneficial effect: By arranging a conductive bar on the battery cell and opening a mounting hole on the conductive bar to allow fasteners to penetrate, the two adjacent battery structures can be electrically connected and detachably connected at the same time, which is convenient for the separate removal and maintenance of the battery structure.

[0008] In an optional embodiment, the conductive bar includes a welding portion, a fixing portion and a main body portion, the welding portion and the fixing portion are respectively connected to opposite ends of the main body portion, the welding portion and the main body portion, the fixing portion and the main body portion are all arranged at a predetermined angle, the welding portion is welded to the pole, the main body portion is bonded to the side of the battery cell, and the fixing portion is provided with the mounting hole.

[0009] In an optional embodiment, the battery cell is provided with one, the pole includes a positive pole and a negative pole, and two conductive bars are provided, and the two conductive bars are respectively connected to the positive pole and the negative pole.

[0010] In an optional embodiment, there are several battery cells arranged in sequence, the poles include a positive pole and a negative pole, the battery structure also includes a connecting row, the connecting row connects the positive pole and the negative pole of two adjacent battery cells, two conductive rows are provided, and for two battery cells located at the edges of both sides of the several arranged battery cells, one of the positive pole and the negative pole is connected to the connecting row, and the other of the positive pole and the negative pole is connected to the conductive row.

[0011] Beneficial effect: By setting the connection row, the connection between multiple cells in the battery structure is achieved to increase the total energy of the battery structure.

[0012] In the second aspect, the utility model also provides a battery module, including the above-mentioned battery structure, wherein a plurality of the battery structures are arranged in a transverse direction to form a battery row, and a plurality of the battery rows are arranged in a longitudinal direction; a fastener, in a row of the battery rows, the mounting holes of two adjacent conductive rows in two adjacent battery structures are correspondingly connected, and the fastener simultaneously penetrates the two connected mounting holes.

[0013] In a third aspect, the utility model further provides a battery pack, comprising the above-mentioned battery module; a box body, wherein the battery module is arranged in the box body, and the fastener passes through the mounting hole and is detachably connected to the box body.

[0014] Beneficial effect: By fasteners penetrating the mounting holes of two adjacent conductive bars in adjacent battery structures, detachable connection between the two adjacent battery structures and between the battery structure and the box is achieved, thereby achieving rapid fixation and disassembly of the battery structure.

[0015] In an optional embodiment, the battery pack further includes an insulating block, wherein the insulating block is located between the conductive bar and the box body, the insulating block is connected to the box body, and the insulating block is detachably connected to the conductive bar.

[0016] Beneficial effect: By providing an insulating block, the insulation performance inside the battery pack is ensured, and the conductive bar is prevented from being electrically connected to the box body, thereby affecting the performance of the battery structure.

[0017] In an optional embodiment, the battery pack further includes a collection module and a distribution box, the collection module is electrically connected to the distribution box, the collection module and the distribution box are arranged in the box, the collection module is electrically connected to the conductive bus, and the collection module is suitable for collecting voltage data and temperature data of the battery structure.

[0018] Beneficial effect: By collecting the voltage data and temperature data of the battery structure, real-time monitoring of the battery structure performance can be achieved.

[0019] In an optional embodiment, the acquisition module includes a chip acquisition unit, and there are a plurality of the chip acquisition units, and the plurality of the chip acquisition units are electrically connected to the conductive bars on the plurality of the battery structures; the chip acquisition unit adopts wired communication, and the acquisition module also includes a first connection harness, which is sequentially connected in series with the plurality of the chip acquisition units, and the first connection harness is electrically connected to the distribution box; or, the chip acquisition unit adopts near-field communication, and the acquisition module also includes a second connection harness, which is arranged close to the plurality of the chip acquisition units, and the second connection harness is electrically connected to the distribution box; or, the chip acquisition unit adopts wireless communication, and the chip acquisition unit and / or the distribution box has a wireless communication module.

[0020] Beneficial effects: Multiple schemes are adopted for data collection of battery structure to improve the applicability of collection modules.

[0021] In an optional implementation, the acquisition module includes an acquisition terminal and an acquisition harness, the acquisition terminal is electrically connected to the distribution box via the acquisition harness, and the acquisition terminal is electrically connected to the conductive bus.

[0022] Beneficial effects: Multiple schemes are adopted for data collection of battery structure to improve the applicability of collection modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a single-cell battery structure according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the conductive bar according to an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of a multi-cell battery structure according to an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of the three-dimensional structure of a battery pack that uses a collection terminal to collect data according to an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of the side structure of a battery pack that uses a collection terminal to collect data according to an embodiment of the utility model;

[0029] Figure 6 This is a three-dimensional structural schematic diagram of a single-cell battery structure with a chip acquisition unit according to an embodiment of the utility model;

[0030] Figure 7 This is a three-dimensional structural schematic diagram of a multi-cell battery structure with a chip acquisition unit according to an embodiment of the utility model;

[0031] Figure 8 A schematic diagram of a three-dimensional structure of a battery pack that uses a chip acquisition unit to collect data according to an embodiment of the utility model;

[0032] Fig. 9 This is another three-dimensional structural schematic diagram of a battery pack that uses a chip acquisition unit to collect data according to an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 10. Battery cell; 11. Positive pole; 12. Negative pole; 20. Conductive bar; 21. Mounting hole; 22. Welding part; 23. Fixing part; 24. Main body; 30. Connecting bar; 40. Fastener; 50. Box; 51. Crossbeam; 60. Insulating block; 70. Collection module; 71. Chip collection unit; 72. First connecting harness; 73. Collection terminal; 80. Distribution box. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] Combine the following Figures 1 to 9 , describing an embodiment of the utility model.

[0037] According to an embodiment of the utility model, on the one hand, a battery structure is provided, including a battery cell 10 and a conductive bar 20. The battery cell 10 is provided with a pole; the conductive bar 20 is in a bent structure, the first end of the conductive bar 20 is arranged corresponding to the surface where the pole is located, and is welded to the pole, the second end of the conductive bar 20 corresponds to the side of the battery cell 10 and is arranged at a predetermined angle to the side of the battery cell 10, and the second end of the conductive bar 20 is provided with a mounting hole 21, and the mounting hole 21 is suitable for inserting a fastener 40.

[0038] The battery structure of this embodiment is applied, by arranging a conductive bar 20 on the battery cell 10 and opening a mounting hole 21 on the conductive bar to allow the fastener 40 to penetrate, so that the two adjacent battery structures can be electrically connected and the two adjacent battery structures can be detachably connected, which is convenient for the separate removal and maintenance of the battery structure.

[0039] For details, please refer to Figure 1 and Figure 2 In this embodiment, the second end of the conductive bar 20 is disposed at a right angle to the side surface of the battery cell 10 .

[0040] It should be noted that in the related art, in a plurality of battery structures arranged in a row along the horizontal direction (i.e., in a battery row), the electrical connection method of two adjacent battery structures is aluminum bar welding, and aluminum bar welding connects the plurality of battery structures into a whole. When one of the battery structures needs to be maintained, it needs to be dismantled as a whole, which is difficult to dismantle, and is therefore not conducive to the subsequent maintenance of the battery structure.

[0041] In one embodiment, Figure 2 As shown, the conductive bar 20 includes a welding portion 22, a fixing portion 23 and a main body portion 24. The welding portion 22 and the fixing portion 23 are respectively connected to the opposite ends of the main body portion 24. The welding portion 22 and the main body portion 24, the fixing portion 23 and the main body portion 24 are all arranged at a predetermined angle. The welding portion 22 is welded to the pole, the main body portion 24 is bonded to the side of the battery cell 10, and a mounting hole 21 is opened on the fixing portion 23.

[0042] For details, please refer to Figure 2 The welding portion 22 and the main body portion 24, and the fixing portion 23 and the main body portion 24 are all arranged at right angles.

[0043] It should be noted that the plane where the pole of the battery cell 10 is located is arranged at a right angle to the side of the battery cell 10, and the main body 24 and the welding part 22 are arranged at a right angle to achieve a better fit between the main body 24 and the side of the battery cell 10, and achieve a better bonding effect between the main body 24 and the side of the battery cell 10.

[0044] For further information, see Figure 2 The fixing portion 23 and the main body portion 24 are arranged at a right angle to facilitate the connection of the fixing portions 23 of adjacent battery structures.

[0045] In a first embodiment of the battery structure, Figure 1 and Figure 6 As shown, the battery cell 10 is provided with one, the poles include a positive pole 11 and a negative pole 12, and two conductive bars 20 are provided, and the two conductive bars 20 are connected to the positive pole 11 and the negative pole 12 respectively.

[0046] In the second embodiment of the battery structure, Figure 3 and Figure 7 As shown, several battery cells 10 are arranged in sequence, the poles include a positive pole 11 and a negative pole 12, and the battery structure also includes a connecting row 30, the connecting row 30 connects the positive pole 11 and the negative pole 12 of two adjacent battery cells 10, and two conductive bars 20 are provided. For two battery cells 10 located at the edges of both sides among the several arranged battery cells 10, one of the positive pole 11 and the negative pole 12 is connected to the connecting row 30, and the other of the positive pole 11 and the negative pole 12 is connected to the conductive bar 20. Through the provision of the connecting row 30, the connection between multiple battery cells 10 in the battery structure is realized to increase the total energy of the battery structure.

[0047] For details, please refer to Figure 3 and Figure 7 There are two battery cells 10 arranged, the positive electrode column 11 of the battery cell 10 on the left is connected to a conductive bar 20, the negative electrode column 12 of the battery cell 10 on the left is connected to the positive electrode column 11 of the battery cell 10 on the right through a connecting bar 30, and the negative electrode column 12 of the battery cell 10 on the right is connected to another conductive bar 20, so that the two battery cells 10 are connected in series.

[0048] Of course, in other alternative implementations, the number of battery cells 10 in a battery structure can also be adjusted according to actual conditions, such as three, four, etc.

[0049] According to an embodiment of the utility model, in a second aspect, a battery module is further provided, comprising the above-mentioned battery structure and a fastener 40. A plurality of battery structures are provided, and a plurality of battery structures are arranged in a horizontal direction to form a battery row, and a plurality of battery rows are arranged in a vertical direction; in a row of the battery rows, the mounting holes 21 of two adjacent conductive rows 20 in two adjacent battery structures are correspondingly connected, and the fastener 40 simultaneously penetrates the two connected mounting holes 21, so that the two adjacent battery structures can be detachably connected.

[0050] In one embodiment, Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, the battery module includes both the battery structure of the first embodiment and the battery structure of the second embodiment.

[0051] Of course, in other alternative embodiments, the battery module may only include the battery structure of the first embodiment described above; or, it may only include the battery structure of the second embodiment described above.

[0052] In one embodiment, Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, in this embodiment, a plurality of battery structures in a battery row are arranged in series, and a plurality of battery rows are arranged in series in sequence.

[0053] Of course, in other alternative implementations, several battery rows may also be arranged in parallel.

[0054] According to an embodiment of the present invention, in a third aspect, a battery pack is provided, comprising the above-mentioned battery module and a box 50. The battery module is disposed in the box 50, and the fastener 40 passes through the mounting hole 21 and is detachably connected to the box 50.

[0055] The battery pack of this embodiment is applied, and the fastener 40 penetrates the mounting holes 21 of two adjacent conductive bars 20 in the adjacent battery structure to achieve a detachable connection between the two adjacent battery structures and between the battery structure and the box 50, thereby achieving rapid fixing and disassembly of the battery structure.

[0056] It is worth noting that in the related art, the battery module is fixed to the box 50 by bonding, so it is not convenient to remove and maintain the battery structure. In this embodiment, the fastener 40 can not only electrically connect and detachably connect two adjacent battery structures, but also make the battery structure detachably connected to the box 50, so as to facilitate the removal and maintenance of a single battery structure.

[0057] In one embodiment, Figures 4 to 5 As shown, the battery pack further includes an insulating block 60, which is located between the conductive bar 20 and the box 50, and is connected to the box 50. The insulating block 60 and the conductive bar 20 are detachably connected. By providing the insulating block 60, the insulation performance inside the battery pack is ensured, and the conductive bar 20 is prevented from being electrically connected to the box 50, thereby affecting the performance of the battery structure.

[0058] Specifically, Figures 4 to 5 As shown, the box body 50 includes a crossbeam 51, and the fastener 40 passes through the mounting hole 21 and detachably connects the battery structure to the insulating block 60, and the insulating block 60 is detachably connected to the crossbeam 51 by bolts.

[0059] In one embodiment, Figures 4 to 5 , Figures 8 to 9The battery pack shown also includes a collection module 70 and a distribution box 80. The collection module 70 is electrically connected to the distribution box 80. The collection module 70 and the distribution box 80 are arranged in the box 50. The collection module 70 is electrically connected to the conductive bar 20. The collection module 70 is suitable for collecting voltage data and temperature data of the battery structure. By collecting the voltage data and temperature data of the battery structure, real-time monitoring of the battery structure performance is achieved.

[0060] In one embodiment, Figures 6 to 9 As shown, the acquisition module 70 includes a chip acquisition unit 71, and a plurality of chip acquisition units 71 are provided. The plurality of chip acquisition units 71 are electrically connected to the conductive bars 20 on the plurality of battery structures. The chip acquisition units 71 use wired communication. The acquisition module 70 also includes a first connection harness 72, which is connected in series with the plurality of chip acquisition units 71 in sequence, and the first connection harness 72 is electrically connected to the distribution box 80.

[0061] Specifically, a battery row is formed by arranging a plurality of battery structures in a transverse direction, and a plurality of battery structures in one battery row are arranged in series. Therefore, a plurality of chip acquisition units 71 corresponding to one battery row realize series communication.

[0062] Please note that Figure 8 The first connecting harness 72 is connected to the leftmost battery structure of the battery row, and data transmission to several chip acquisition units 71 on the battery row can be realized through the first connecting harness 72.

[0063] In another embodiment, the chip acquisition unit 71 uses near field communication, and the acquisition module 70 further includes a second connection harness, which is disposed close to a plurality of chip acquisition units 71 and is electrically connected to the distribution box 80 .

[0064] Specifically, the chip acquisition unit 71 includes an inductive communication module.

[0065] It should be noted that in the near field communication mode, by arranging an integrated inductive card reader, inductive card and point-to-point communication functions on the chip acquisition unit 71, the second connection harness and the chip acquisition unit 71 can exchange data when they are close to each other.

[0066] In yet another embodiment, the chip acquisition unit 71 uses wireless communication, and the chip acquisition unit 71 and the power distribution box 80 have wireless communication modules.

[0067] In other embodiments, Figure 4 As shown, the acquisition module 70 includes an acquisition terminal 73 and an acquisition harness (not shown in the figure), the acquisition terminal 73 is electrically connected to the distribution box 80 through the acquisition harness, and the acquisition terminal 73 is electrically connected to the conductive bar 20.

[0068] Specifically, a space for arranging the collection harness is provided on the upper portion of the cross beam 51 of the box body 50 , and the box body 50 further includes side beams, on which grooves are provided, and the collection harness is connected and aggregated to the distribution box 80 through the grooves.

[0069] It is worth noting that the data collection of the battery structure adopts a variety of schemes, which can be selected according to different actual conditions to improve the applicability of the collection module 70.

[0070] In applying the battery pack of the present embodiment, first, the main body 24 of the conductive bar 20 is glued and connected to the side of the battery cell 10, and the conductive bar 20 is welded to the positive pole 11 and the negative pole of the battery cell 10 to form a battery structure; then, the chip acquisition unit 71 is connected to the conductive bar 20; thereafter, a battery row formed by arranging a plurality of battery structures in a transverse direction is arranged so that the mounting holes of two adjacent conductive bars 20 in two adjacent battery structures are correspondingly connected, and a plurality of battery rows are arranged in a longitudinal direction; finally, the battery module and the distribution box 80 are loaded into the box body 50, the insulating block 60 is connected to the crossbeam 51 by bolts, the fastener 40 penetrates the mounting hole 21 and detachably connects the conductive bar 20 to the insulating block 60, two adjacent battery rows are arranged in series, and the chip acquisition unit 71 is connected to the distribution box 80 by a first connecting harness 72.

[0071] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A battery structure, characterized in that: include: A battery cell is provided with a pole; A conductive bar, wherein the conductive bar is in a bent structure, wherein the first end of the conductive bar is arranged corresponding to the surface where the pole is located and is welded to the pole, the second end of the conductive bar corresponds to the side surface of the battery cell and is arranged at a predetermined angle to the side surface of the battery cell, and the second end of the conductive bar is provided with a mounting hole, wherein the mounting hole is suitable for inserting a fastener.

2. The battery structure according to claim 1, characterized in that: The conductive bar includes a welding portion, a fixing portion and a main body portion, wherein the welding portion and the fixing portion are respectively connected to opposite ends of the main body portion, the welding portion and the main body portion, the fixing portion and the main body portion are all arranged at a predetermined angle, the welding portion is welded to the pole, the main body portion is bonded to the side of the battery cell, and the fixing portion is provided with the mounting hole.

3. The battery structure according to claim 1 or 2, characterized in that: The battery cell is provided with one, the poles include a positive pole and a negative pole, and the conductive bars are provided with two, and the two conductive bars are respectively connected to the positive pole and the negative pole.

4. The battery structure according to claim 1 or 2, characterized in that: Several battery cells are arranged in sequence, the poles include a positive pole and a negative pole, the battery structure also includes a connecting row, the connecting row connects the positive pole and the negative pole of two adjacent battery cells, two conductive rows are provided, and for two battery cells located at the edges of both sides of the several arranged battery cells, one of the positive pole and the negative pole is connected to the connecting row, and the other of the positive pole and the negative pole is connected to the conductive row.

5. A battery module, characterized in that: include: The battery structure according to any one of claims 1 to 4, wherein a plurality of the battery structures are arranged in a transverse direction to form a battery row, and a plurality of the battery rows are arranged in a longitudinal direction; The fastener is configured such that in a row of the battery rows, the mounting holes of two adjacent conductive rows in two adjacent battery structures are correspondingly connected, and the fastener simultaneously penetrates the two connecting mounting holes.

6. A battery pack, characterized in that: include: The battery module according to claim 5; The battery module is arranged in the box body, and the fastener passes through the mounting hole and is detachably connected to the box body.

7. The battery pack according to claim 6, characterized in that: The battery pack further includes an insulating block, which is located between the conductive bar and the box body, and is connected to the box body. The insulating block is detachably connected to the conductive bar.

8. The battery pack according to claim 6, characterized in that: The battery pack also includes a collection module and a distribution box, the collection module is electrically connected to the distribution box, the collection module and the distribution box are arranged in the box, the collection module is electrically connected to the conductive bus, and the collection module is suitable for collecting voltage data and temperature data of the battery structure.

9. The battery pack according to claim 8, characterized in that: The acquisition module includes a chip acquisition unit, and the chip acquisition units are provided in plurality, and the plurality of chip acquisition units are electrically connected to the conductive bars on the plurality of battery structures; The chip acquisition unit adopts wired communication, and the acquisition module further includes a first connection harness, which is sequentially connected in series with a plurality of the chip acquisition units, and the first connection harness is electrically connected with the distribution box; or, The chip acquisition unit adopts near field communication, and the acquisition module further includes a second connection harness, the second connection harness is arranged close to a plurality of the chip acquisition units, and the second connection harness is electrically connected to the distribution box; or, The chip acquisition unit adopts wireless communication, and the chip acquisition unit and / or the power distribution box has a wireless communication module.

10. The battery pack according to claim 8, characterized in that: The acquisition module includes an acquisition terminal and an acquisition harness, the acquisition terminal is electrically connected to the distribution box through the acquisition harness, and the acquisition terminal is electrically connected to the conductive bus.

Images