A battery pack bottom shell bracket

Abstract

The present invention relates to the technical field of battery packs, and specifically to a battery pack bottom shell bracket, comprising: a bottom plate, a plurality of inner grooves are arranged on the bottom plate, and a heat-conducting enclosure is arranged in the inner grooves; a battery pack, the battery pack comprises a plurality of single cells, the plurality of single cells are fixed by bonding with heat-conducting adhesive, the battery pack is arranged in the heat-conducting enclosure, the single cells are provided with positive poles and negative poles, and the adjacent single cells are placed in the opposite order; a partition, a through hole is arranged on the partition; a conductive row, a connector is arranged on one side of the conductive row, and the positive pole and the negative pole are connected to the connector through the through hole; a fixed guide and a switching guide are arranged on the other side of the conductive row, and the fixed guide and the switching guide are connected to the connector; the battery pack bottom shell bracket of the present invention has the function of adjusting the battery pack connection structure, and achieving the purpose of adjusting the voltage or capacity by changing the series-parallel connection mode, thereby improving the adaptability of reuse.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery packs, and in particular relates to a battery pack bottom shell bracket. Background Art

[0002] The rapid application of battery packs is relatively convenient and fast in terms of traditional technical means. During the application and use of traditional battery packs, the current transmission intensity is generally consistent with each other, which makes it impossible to enhance the current transmission intensity of the battery pack during the transmission process. Traditional battery packs are usually slow in the process of battery strength conversion during application, which can easily cause damage to the battery pack, and the current intensity cannot be controlled, resulting in the subsequent process of changing the capacity for reuse of the battery pack becoming complicated and cumbersome. Therefore, the battery pack bracket structure is set so that the battery capacity or voltage can be changed by changing the battery connection method. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the following technical problems in the prior art: the existing battery pack structure is difficult to adjust its internal connection method, the voltage and capacity of the battery pack cannot be changed, and the recycling efficiency is low.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A battery pack bottom shell bracket, comprising: a bottom plate, a plurality of inner grooves are arranged on the bottom plate, and a heat-conducting enclosure is arranged in the inner groove;

[0006] A battery pack, wherein the battery pack comprises a plurality of single cells, the plurality of single cells are fixed by bonding with a heat-conducting adhesive, the battery pack is arranged in a heat-conducting enclosure, the single cells are provided with a positive electrode column and a negative electrode column, and adjacent single cells are placed in the opposite order;

[0007] A partition, wherein a through hole is provided on the partition;

[0008] A conductive coupling, wherein a connector is provided on one side of the conductive coupling, and the positive pole and the negative pole are connected to the connector through a via hole;

[0009] A fixed guide piece and a switching guide piece are arranged on the other side of the conductive link, and the fixed guide piece and the switching guide piece are connected to the connecting piece.

[0010] As a preferred technical solution for a battery pack bottom shell bracket, a first notch is arranged at the side of the conductive link along the length direction of the conductive link, and a corner notch group is arranged in the middle of the conductive link, and the corner notch group includes a circular notch and four second notches arranged around the circular notch.

[0011] As a preferred technical solution for a battery pack bottom shell bracket, the connecting member includes a bent plate and a pressure plate and a slide plate arranged at both ends of the bent plate, and the pressure plate is fixed to the conductive link by a first pin.

[0012] As an optimal technical solution for a battery pack bottom shell bracket, a slot hole is provided on the slide plate, a second pin passes through the slot hole and is connected to a connector, a conductive column is connected to one side of the bent plate, and the conductive column is passed through the slot hole.

[0013] As a preferred technical solution for a battery pack bottom shell bracket, every two connectors arranged on the side of the conductive link are connected by the fixed guide plate, and the connector at the second notch connects two adjacent connectors by a switching guide plate.

[0014] As an optimal technical solution for a battery pack bottom shell bracket, the switching guide includes a top plate and a first conductive strip and a second conductive strip arranged on the bottom surface of the top plate, and a through shaft is arranged at the center of the top plate, and the through shaft is passed through the circular groove.

[0015] As a preferred technical solution for a battery pack bottom shell bracket, a sealing plate is provided at the bottom of the through shaft, a ring plate is sleeved on the through shaft, and the sealing plate and the ring plate are connected by a spring.

[0016] As an optimal technical solution for a battery pack bottom shell bracket, the circular groove side walls are alternately provided with four oblique arc grooves and four vertical grooves. The vertical grooves are arranged at the connection of the oblique arc grooves. The top of the vertical groove is connected to the high position of the oblique arc groove, and the bottom of the vertical groove is connected to the low position of the next oblique arc groove.

[0017] As a preferred technical solution for a battery pack bottom shell bracket, the through-axis side wall is symmetrically provided with two side shafts, and the side shafts are embedded in the oblique arc groove.

[0018] As an optimal technical solution for a battery pack bottom shell bracket, it also includes a top cover, which is arranged above the conductive strip, the top cover is connected to the bottom plate, an electromagnet is arranged at the bottom of the top cover, the electromagnet corresponds to the switching guide plate, and a magnetic material layer is laid above the top plate.

[0019] Beneficial effects of the present invention: The battery pack bottom shell bracket of the present invention can adjust the battery pack connection structure, and achieves the purpose of adjusting the voltage or capacity by changing the series-parallel connection mode, thereby improving the adaptability of reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the overall explosion structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the bottom plate of the present invention;

[0023] Figure 3 It is a schematic diagram of the arrangement structure of the single battery in the inner tank of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the angle slot group on the conductive link in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the connecting member in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the circular groove in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the switch guide in the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the top cover in the present invention;

[0029] Fig. 9 It is a schematic diagram of the overall structure of the present invention;

[0030] Fig.10 A schematic diagram of a parallel connection structure in the present invention;

[0031] Fig.11 A schematic diagram of a series connection structure in the present invention;

[0032] Fig.12 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0033] Fig.13 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0034] Figure numerals: inner groove 101, battery pack 200, heat conductive enclosure 102, single battery 201, partition 300, through hole 301, positive pole 201a, negative pole 201b, first notch 401, angle slot group 402, pressure plate 502, first pin 504, slide plate 503, second pin 506, bent plate 501, conductive column 507, notch hole 505, fixed guide piece 600, second notch 402a, connector 500, first conductive strip 702, second conductive strip 703, sealing plate 705, ring plate 706, spring 707, circular groove 402b, vertical groove 402d, through shaft 704, side shaft 704a, oblique arc groove 402c, conductive row 400, bottom plate 100, top cover 800, electromagnet 801, switching guide piece 700, top plate 701. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0039] Reference Figure 1 This embodiment provides a battery pack bottom shell bracket, specifically, refer to Figure 2 The present invention comprises a bottom plate 100, a plurality of inner grooves 101 are arranged on the bottom plate 100, and a heat-conducting enclosure 102 is arranged in the inner groove 101;

[0040] Reference Figure 3, a battery pack 200, the battery pack 200 includes a plurality of single cells 201, the plurality of single cells 201 are fixed by bonding with a heat conductive adhesive, the battery pack 200 is arranged in a heat conductive enclosure 102, a positive electrode column 201a and a negative electrode column 201b are arranged on the single cell 201, and adjacent single cells 201 are placed in the opposite order;

[0041] A partition 300 is provided with a through hole 301;

[0042] A conductive link 400, a connector 500 is disposed on one side of the conductive link 400, and the positive electrode column 201a and the negative electrode column 201b are connected to the connector 500 through the via hole 301;

[0043] A fixed guide piece 600 and a switch guide piece 700 are disposed on the other side of the conductive link 400 . The fixed guide piece 600 and the switch guide piece 700 are connected to the connector 500 .

[0044] Reference Figure 3 It should be noted that a plurality of single cells 201 are bonded together and placed in the inner groove 101, and the battery pack 200 is placed in the heat conductive enclosure 102. Adjacent single cells 201 are prevented from being placed in a reverse order, specifically, the first single cell 201 is placed with negative on top and positive on bottom, the second adjacent single cell 201 is placed with positive on top and negative on bottom, and the third one is placed with negative on top and positive on bottom again. Specifically, the battery pack 200 is composed of an even number of single cells 201.

[0045] It should be noted that the partition 300 is an insulating plate, which is placed on the battery pack 200 to protect the battery pack, and the conductive link 400 is arranged on the partition 300 .

[0046] Reference Figure 4 , Fig.12 and Fig.13 A first notch 401 is provided at the side of the conductive link 400 along the length direction of the conductive link 400, and an angle notch group 402 is provided in the middle of the conductive link 400. The angle notch group 402 includes a circular notch 402b and four second notches 402a provided around the circular notch 402b.

[0047] It should be noted that the four second notches 402a are evenly and equidistantly arranged around the circular groove 402b; the centers of the four second notches 402a form a square ( Fig.13 denoted by a dotted line in the figure), the square is centered on the circular groove 402b;

[0048] It should be noted that the arrangement positions of the first slot 401 and the second slot 402a correspond to the positions of the positive electrode column 201a and the negative electrode column 201b in the battery pack 200, that is, when the conductive strip 400 is covered on the battery pack 200, the positive electrode column 201a and the negative electrode column 201b are both connected to the connector 500.

[0049] It should be noted that the second notch 402a corresponds to connecting two different battery packs 200 and four different single cells 201 , that is, the four different single cells 201 respectively have two positive poles and two negative poles placed in the second notch 402a and connected to the connector 500 .

[0050] Reference Figure 5 The connecting member 500 includes a bent plate 501 and a pressing plate 502 and a sliding plate 503 arranged at both ends of the bent plate 501 . The pressing plate 502 is fixed on the conductive link 400 through a first pin 504 .

[0051] A slot hole 505 is provided on the slide plate 503 , and the second pin 506 passes through the slot hole 505 to be connected to the connector 500 . A conductive column 507 is connected to one side of the bent plate 501 , and the conductive column 507 passes through the slot hole 505 .

[0052] It should be noted that the main body of the connecting piece 500 is in the shape of a "J" and is made of conductive material as a whole. It consists of a bent plate 501 in the middle and a pressure plate 502 and a slide plate 503 at both ends. One end of the pressure plate 502 is fixed, and one end of the slide plate 503 is adapted to slide when the bent plate 501 is squeezed, thereby ensuring good contact at the bent plate 501 and avoiding loosening.

[0053] At the same time, the structure of the second pin 506 and the slot hole 505 limits the moving direction of one end of the slide plate 503 .

[0054] The notch hole 505 is provided to accommodate the position deviation of the conductive pillar 507 caused by the deformation of the bent plate 501 .

[0055] Every two connectors 500 disposed on the side of the conductive link 400 are connected via a fixed guide 600 , and the connector 500 at the second notch 402 a connects two adjacent connectors 500 via a switching guide 700 .

[0056] That is, the fixed guide piece 600 connects the opposite polarities of adjacent single cells 201 , that is, the fixed guide piece 600 connects the positive electrode column of the previous single cell 201 and the negative electrode column of the next single cell 201 .

[0057] The fixed guide piece 600 is made of conductive material and is disposed on the side of the conductive link 400 .

[0058] Reference Figure 7 The switch guide 700 includes a top plate 701 and a first conductive strip 702 and a second conductive strip 703 disposed on the bottom surface of the top plate 701. A through shaft 704 is disposed at the center of the top plate 701, and the through shaft 704 is disposed in the circular groove 402b.

[0059] It should be noted that the top plate 701 is made of insulating material, the first conductive strip 702 and the second conductive strip 703 are symmetrically arranged, and the distance between the first conductive strip 702 and the second conductive strip 703 is the side length of the square formed by the second slot 402a in the corner slot group 402, so that the first conductive strip 702 and the second conductive strip 703 can connect the connectors 500 at the four corners of the corner slot group 402 in pairs.

[0060] A sealing plate 705 is disposed at the bottom of the through shaft 704 , and a ring plate 706 is sleeved on the through shaft 704 . The sealing plate 705 and the ring plate 706 are connected via a spring 707 .

[0061] The spring 707 exerts a downward force on the top plate 701, so that the first conductive strip 702 and the second conductive strip 703 are crimped with the conductive column 507. Furthermore, the connection between the spring 707 and the ring plate 706 allows the switching guide 700 to rotate in the circular groove 402b.

[0062] Reference Figure 6 The side wall of the circular groove 402b is alternately provided with four oblique arc grooves 402c and four vertical grooves 402d ( Figure 6 4. In the structural schematic diagram of only a single oblique arc groove 402c and a vertical groove 402d are shown), the vertical groove 402d is arranged at the connection of the oblique arc groove 402c, the top of the vertical groove 402d is connected to the high position of the oblique arc groove 402c, and the bottom of the vertical groove 402d is connected to the low position of the next oblique arc groove 402c.

[0063] Two side shafts 704a are symmetrically arranged on the side wall of the through shaft 704, and the side shafts 704a are embedded in the oblique arc groove 402c.

[0064] Since the two side shafts 704a are arranged in a centrally symmetrical manner, the four oblique arc grooves 402c and the four vertical grooves 402d are evenly distributed on the circumferential side, the two side shafts 704a move synchronously and jointly drive the side shaft 704a up and down. Furthermore, when the side shaft 704a moves along the oblique arc groove 402c, the entire switching guide piece 700 rotates. When the side shaft 704a moves from a low position of an oblique arc groove 402c to a high position, the switching guide piece 700 rotates 90 degrees and enters the vertical groove 402d, moves to the bottom of the vertical groove 402d, and enters the next oblique arc groove 402c during the next movement.

[0065] It should be noted that, refer to Figure 6 and Figure 7 The side shaft 704a rotates unidirectionally counterclockwise along the oblique arc groove 402c. Furthermore, the method for limiting the unidirectional rotation of the switching guide plate 700 can be to set an offset at the connection between the bottom of the vertical groove 402d and the oblique arc groove 402c, so that after the side shaft 704a reaches the bottom of the vertical groove 402d, it enters the oblique arc groove 402c when it rises. This is the existing technology and will not be repeated here.

[0066] Reference Figure 8 and Fig. 9 The present invention also includes a top cover 800, which is arranged above the conductive row 400, and is connected to the bottom plate 100. An electromagnet 801 is arranged at the bottom of the top cover 800, and the electromagnet 801 is arranged corresponding to the switching guide piece 700. A magnetic material layer is laid above the top plate 701.

[0067] When the corresponding electromagnet is turned on, the switching guide 700 is attracted to rise and rotate 90°, and the first conductive strip 702 and the second conductive strip 703 are disconnected. After the electromagnet is turned off, the switching guide 700 descends, and the first conductive strip 702 and the second conductive strip 703 are connected again to form a switch.

[0068] The top cover 800 is connected to the bottom plate 100 by means of support pillars, and the top cover 800 presses the conductive link 400 tightly.

[0069] Specifically, multiple single batteries can increase voltage when connected in series, and can increase capacity when connected in parallel. Therefore, the present invention changes the voltage or capacity of the entire battery pack by adjusting the connection method of multiple single batteries. Figure 3 In the figure, four battery groups are set as an example, each battery group includes 10 single cells, the side of the lower battery group is connected to two adjacent single cells through the second conductive strip 703, and the side of the upper battery group is connected to two adjacent single cells through the first conductive strip 702. An odd number of corner slot groups 402 are formed in the middle of the conductive row 400, and the switching guide 700 is used to connect adjacent single cells or adjacent battery groups.

[0070] Reference Fig.10 , the four battery groups are divided by a dotted horizontal line. At this time, the first conductive strip 702 and the second conductive strip 703 on the switching guide 700 in the middle position are connected in the following manner: Fig.10 As shown, the first conductive bar 702 connects the two battery groups on the left in series, and the second conductive bar 703 connects the two battery groups on the right in series. Through external wiring, the left and right sides are connected in parallel to achieve the purpose of increasing capacity.

[0071] Reference Fig.11 , the four battery groups are divided by a dotted horizontal line. At this time, the first conductive strip 702 and the second conductive strip 703 on the switching guide 700 in the middle position are connected in the following manner: Fig.11 As shown, the second conductive strip 703 connects the two upper battery packs in series, and the first conductive strip 702 connects the two lower battery packs in series. Fig.11 Relative to Fig.10 The connection mode of the conductive strip corresponding to the rightmost switching guide is changed so that it is rotated 90 degrees. At this time, when the external wiring is changed, the voltage between L1 and L2 increases, and the voltage between L3 and L4 decreases.

[0072] In summary, the present invention can change the internal connection mode when the military battery pack is disassembled, and achieve the purpose of adjusting the voltage or capacity of the overall output of the battery pack after adjusting the external wiring.

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A battery pack bottom shell bracket, characterized in that: include, A bottom plate (100), wherein a plurality of inner grooves (101) are arranged on the bottom plate (100), and a heat-conducting enclosure plate (102) is arranged in the inner groove (101); A battery pack (200), the battery pack (200) comprising a plurality of single cells (201), the plurality of single cells (201) being bonded and fixed by means of a heat-conducting adhesive, the battery pack (200) being arranged in a heat-conducting enclosure (102), the single cells (201) being provided with a positive electrode column (201a) and a negative electrode column (201b), and adjacent single cells (201) being arranged in the opposite order; A partition (300), wherein a through hole (301) is provided on the partition (300); A conductive link (400), wherein a connector (500) is provided on one side of the conductive link (400), and the positive electrode column (201a) and the negative electrode column (201b) are connected to the connector (500) through the via hole (301); A fixed guide piece (600) and a switch guide piece (700) are provided on the other side of the conductive link (400), and the fixed guide piece (600) and the switch guide piece (700) are connected to the connecting piece (500).

2. The battery pack bottom shell bracket according to claim 1, characterized in that: A first notch (401) is provided at the side of the conductive link (400) along the length direction of the conductive link (400), and an angle slot group (402) is provided in the middle of the conductive link (400), wherein the angle slot group (402) comprises a circular slot (402b) and four second notches (402a) provided around the circular slot (402b).

3. The battery pack bottom shell bracket according to claim 2, characterized in that: The connecting member (500) comprises a bent plate (501) and a pressing plate (502) and a sliding plate (503) arranged at two ends of the bent plate (501); the pressing plate (502) is fixed to the conductive link (400) via a first pin (504).

4. The battery pack bottom shell bracket according to claim 3, characterized in that: The slide plate (503) is provided with a notch hole (505), and the second pin (506) passes through the notch hole (505) to be connected to the connecting member (500). A conductive column (507) is connected to one side of the bent plate (501), and the conductive column (507) is inserted into the notch hole (505).

5. The battery pack bottom shell bracket according to claim 4, characterized in that: Every two connecting pieces (500) arranged on the side of the conductive link (400) are connected via the fixed guide piece (600), and the connecting piece (500) at the second notch (402a) connects two adjacent connecting pieces (500) via a switching guide piece (700).

6. The battery pack bottom shell bracket according to claim 5, characterized in that: The switching guide (700) comprises a top plate (701) and a first conductive strip (702) and a second conductive strip (703) arranged on the bottom surface of the top plate (701); a through shaft (704) is arranged at the center of the top plate (701); and the through shaft (704) is inserted into the circular groove (402b).

7. The battery pack bottom shell bracket according to claim 6, characterized in that: A sealing plate (705) is provided at the bottom of the through-shaft (704), a ring plate (706) is sleeved on the through-shaft (704), and the sealing plate (705) and the ring plate (706) are connected via a spring (707).

8. The battery pack bottom shell bracket according to claim 7, characterized in that: The side wall of the circular groove (402b) is alternately provided with four oblique arc grooves (402c) and four vertical grooves (402d); the vertical grooves (402d) are provided at the connection of the oblique arc grooves (402c); the top of the vertical groove (402d) is connected to the high position of the oblique arc groove (402c); and the bottom of the vertical groove (402d) is connected to the low position of the next oblique arc groove (402c).

9. The battery pack bottom shell bracket according to claim 8, characterized in that: The side wall of the through-shaft (704) is symmetrically provided with two side shafts (704a), and the side shafts (704a) are embedded in the oblique arc groove (402c).

10. The battery pack bottom shell bracket according to claim 9, characterized in that: The invention also comprises a top cover (800), wherein the top cover (800) is arranged above the conductive row (400), the top cover (800) is connected to the bottom plate (100), an electromagnet (801) is arranged at the bottom of the top cover (800), the electromagnet (801) is arranged corresponding to the switching guide piece (700), and a magnetic material layer is laid above the top plate (701).

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