An easy-to-install battery pack

Abstract

This utility model discloses an easy-to-install battery pack, including a housing and multiple batteries. The housing has a receiving cavity, and a circuit board is mounted on the top cover of the receiving cavity. Two slots penetrate the inner wall of the receiving cavity. Multiple contacts are provided on the circuit board. Multiple clips extend into the receiving cavity. Conductive plates are electrically connected to the positive and negative terminals of the batteries. A connecting assembly is installed within the receiving cavity. The connecting assembly includes two first spring contacts and multiple second spring contacts. The first spring contacts abut the edge of the slot, and their two ends are electrically in contact with adjacent contacts and adjacent conductive plates, respectively. A connecting portion extending from the first spring contact through the slot is provided, and a limiting block is provided on the connecting portion. The limiting block abuts the edge of the slot. The second spring contacts are snapped into the clips, and their two ends abut adjacent contacts and adjacent conductive plates, respectively. This utility model provides an easy-to-install battery pack by using a snap-fit ​​method to install the connecting assembly, facilitating battery pack assembly by operators.

Description

Technical Field

[0001] This utility model relates to the field of power battery packs, and in particular to a battery pack that is easy to install. Background Technology

[0002] In the manufacturing of power battery packs (especially for space-constrained applications such as electric vehicles), batteries or battery modules are usually first installed in independent battery boxes, and then multiple battery boxes are assembled to form a complete battery pack.

[0003] In order to maximize energy density and meet the stringent requirements of vehicle layout for compactness, the external dimensions of the battery box are compressed as much as possible, resulting in extremely limited internal space. Currently, the battery is generally fixed in the battery box by bolt connection, that is, the battery and conductive components are fastened to the base plate of the battery box by bolts.

[0004] However, this bolt fixing method presents a problem of high operational difficulty in the confined space of the battery box: due to the highly compact internal space of the battery box, the operating space left for operators and their tools (such as wrenches, screwdrivers, and automatic tightening equipment) is extremely small. The limited space makes it difficult for operators to smoothly locate the bolt holes, place and tighten the bolts, increasing the difficulty and complexity of installation and resulting in low assembly efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a battery pack that is easy to install, using a snap-fit ​​connection method to install the connecting components, making it convenient for operators to assemble the battery pack.

[0006] The technical solution adopted by the battery pack disclosed in this utility model, which is easy to install, is as follows:

[0007] The device includes a housing and multiple batteries. The housing has a cavity, and a circuit board is mounted on the cavity. Two slots extend through the inner wall of the cavity. Multiple contacts are provided on the circuit board. Multiple clips extend into the cavity. Conductive plates are electrically connected to the positive and negative terminals of each battery. A connecting assembly is installed within the cavity. The connecting assembly includes two first spring contacts and multiple second spring contacts. The first spring contacts abut the edge of the slot, and their two ends are electrically in contact with adjacent contacts and adjacent conductive plates, respectively. A connecting portion extends from the first spring contact through the slot, and a limiting block is provided on the connecting portion. The limiting block abuts the edge of the slot. The second spring contacts are engaged within the clips, and their two ends abut adjacent contacts and adjacent conductive plates, respectively.

[0008] As a preferred embodiment, the outer side of the receiving box is provided with a limiting groove corresponding to the slot, the slot is located in the limiting groove, and the limiting block is engaged in the limiting groove.

[0009] As a preferred embodiment, the outer side of the receiving box is provided with a corresponding mounting groove, the limiting groove is located in the mounting groove, and notches are provided on both sides of the limiting block. A limiting ring is sleeved on the outer side of the connecting part, and two inserts extend from the limiting ring. The two inserts pass through the two notches and touch the two ends of the first spring piece. The limiting ring is engaged in the mounting groove.

[0010] As a preferred embodiment, the receiving cavity is provided with a corresponding buckle groove, and the second spring clip is engaged between the buckle and the groove.

[0011] As a preferred embodiment, the circuit board is covered with a heat-conducting sheet, and the inner wall of the receiving cavity has multiple heat dissipation grooves running through it.

[0012] As a preferred embodiment, there are two receiving cavities, which are located on both sides of the receiving box.

[0013] The advantages of this utility model regarding an easy-to-install battery pack are:

[0014] The battery is placed in the receiving cavity, with one of the conductive plates on the battery positioned in the snap-fit. The second spring clip is snapped into the snap-fit ​​and installed in the receiving cavity, making electrical contact with the conductive plate. The circuit board is then placed on the receiving cavity, making electrical contact with the contact point adjacent to the second spring clip. The first spring clip is pushed through the slot and snapped into the edge of the slot, while the limiting block touches the edge of the slot, thus confining the first spring clip within the receiving cavity. Both ends of the first spring clip make electrical contact with the adjacent contact point and the adjacent conductive plate, respectively. The circuit board connects the batteries in the receiving cavity in parallel. The wires of the external power battery pack are electrically connected to the two connecting parts, connecting this battery pack to the external power battery pack. The first and second spring clips are installed in the receiving cavity by snap-fit, replacing the traditional bolt connection, significantly simplifying the operation of the operator in installing the connecting components in the confined space of the receiving cavity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a battery pack that is easy to install according to this utility model.

[0016] Figure 2 This is a schematic diagram of the circuit board installation for a battery pack that is easy to install according to this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of a battery pack housing box that is easy to install according to this utility model.

[0018] Figure 4 This is a schematic diagram of the first spring contact installation of a battery pack that is easy to install according to this utility model.

[0019] Figure 5This is a cross-sectional view of the first spring and the housing box of a battery pack that is easy to install according to this utility model.

[0020] Figure 6 This is a schematic diagram of the second spring contact installation for a battery pack that is easy to install according to this utility model.

[0021] Figure 7 This is a cross-sectional view of the second spring and housing box of a battery pack that is easy to install according to this utility model. Detailed Implementation

[0022] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0023] Please refer to Figures 1-3 .

[0024] The present invention discloses a battery pack that is easy to install, including a housing box 1 and multiple batteries 3;

[0025] The storage box 1 has a storage cavity 11 inside. In this embodiment, it is preferred that there are two storage cavities 11 on the storage box 1. The two storage cavities 11 are located on the two sides of the storage box 1 respectively. The design of two storage cavities 11 can increase the storage space of a single battery pack 3 and increase its capacity.

[0026] Furthermore, two slots 12 penetrate the inner wall of the receiving cavity 11, and the two slots 12 of the receiving cavity 11 are located at both ends of the receiving box 1 respectively; a limiting groove 121 corresponding to the slot 12 is opened on the outer side of the receiving box 1, and the slot 12 is located in the limiting groove 121; a mounting groove 122 corresponding to the slot 12 is opened on the outer side of the receiving box 1, and the limiting groove 121 is located in the mounting groove 122.

[0027] Furthermore, multiple latches 111 extend into the receiving cavity 11. In this embodiment, two latches 111 are preferred. The receiving cavity 11 is provided with corresponding latch slots 112. There is a latching area between the latches 111 and the latch slots 112, and the two latching areas are close to each other.

[0028] Furthermore, multiple heat dissipation grooves 113 penetrate the inner wall of the containment cavity 11. The multiple heat dissipation grooves 113 are located at the top and bottom of the containment box 1, respectively. The heat dissipation grooves 113 located at the top and bottom of the containment box 1 allow air to flow inside the containment box 1, thereby improving the heat dissipation efficiency of the battery 3 inside the containment cavity 11.

[0029] Furthermore, multiple spaced limiting plates 114 extend from the inner wall of the receiving cavity 11.

[0030] Furthermore, the receiving cavity 11 is covered with a circuit board 2, and two circuit boards 2 are respectively covered on both sides of the receiving box 1. The circuit board 2 is provided with multiple contacts 21. In this embodiment, it is preferred that there are four contacts 21. The circuit board 2 is provided with a control circuit, and the multiple contacts 21 are electrically connected to the control circuit.

[0031] Furthermore, a heat-conducting sheet 22 is attached to the circuit board 2. The heat-conducting sheet 22 is located on the outside of the circuit board 2. When multiple battery packs 3 are assembled together, an external heat sink will be inserted between two adjacent battery packs 3. The heat-conducting sheet 22 transfers the high temperature generated by the battery packs 3 to the external heat sink, and the external heat sink conducts the heat out of the external power battery packs 3, reducing the overall operating temperature.

[0032] The positive and negative terminals of the battery 3 are electrically connected to conductive sheets 31, which are located on the top of the battery 3. The battery 3 is placed in the receiving cavity 11. In this embodiment, two batteries 3 are preferably installed in the receiving cavity 11. The supports of the two batteries 3 are filled with a first buffer sponge, which pushes the two batteries 3 to contact the limiting plates 114 on both sides of the inner wall of the receiving cavity 11. The top of the battery 3 is filled with a second buffer sponge, which contacts the limiting plate 114 on the upper side of the inner wall of the receiving cavity 11. The second buffer sponge pushes the two batteries 3 to contact the limiting plate 114 on the lower side of the inner wall of the receiving cavity 11, thereby constraining the battery 3 in the receiving cavity 11.

[0033] Furthermore, one of the conductive sheets 31 on the battery 3 extends into the snap-fit ​​area, and another conductive sheet 31 on the battery 3 extends close to the slot 12.

[0034] Please refer to Figure 1 and Figures 3-7 .

[0035] A connecting assembly 4 is installed inside the receiving cavity 11. The connecting assembly 4 includes two first spring clips 41 and multiple second spring clips 43.

[0036] Furthermore, a connecting portion 411 extends from the middle of the first spring piece 41, and a limiting block 412 is provided in the middle of the connecting portion 411. A thread is provided on the outer side of the connecting portion 411, and the thread is close to the end of the connecting portion 411. In this embodiment, the limiting groove 121 is preferably polygonal in shape, and in this embodiment, the outer contour of the limiting block 412 is preferably consistent with the shape of the limiting groove 121. Both ends of the first spring piece 41 extend close to the sides of the limiting block 412.

[0037] The first spring piece 41 is pushed through the slot 12, and the end faces of the first spring piece 41 are engaged with the edge of the slot 12. At the same time, the limiting block 412 is engaged with the limiting groove 121, and the limiting block 412 touches the edge of the slot 12, constraining the first spring piece 41 in the receiving cavity 11. The limiting groove 121 constrains the rotation of the connecting part 411 through the limiting block 412, so that the wires of the external power battery pack 3 can be connected to the thread of the connecting part 411 through the nut. The two ends of the first spring piece 41 are electrically in contact with the adjacent contact 21 and the adjacent conductive sheet 31, respectively. The battery 3 is guided to the circuit board 2 through the conductive sheet 31, the first spring piece 41 and the contact 21, and the discharge is controlled by the control circuit of the circuit board 2.

[0038] Furthermore, notches are provided on both sides of the limiting block 412; a limiting ring 42 is sleeved on the outer side of the connecting part 411, and two inserts 421 extend from the limiting ring 42. The two inserts 421 pass through the two notches and contact the two ends of the first spring piece 41. The limiting ring 42 is engaged in the mounting groove 122. The two inserts 421 respectively constrain the two ends of the first spring piece 41 and firmly engage them with the edge of the slot 12, so as to prevent the first spring piece 41 from being loosened by pulling the connecting part 411. The two inserts 421 respectively push the two ends of the first spring piece 41 to contact the contact point 21 and the conductive sheet 31, so as to avoid the problem of poor contact.

[0039] Furthermore, in this embodiment, the second spring piece 43 in the receiving cavity 11 is preferably two pieces, and the second spring piece 43 is G-shaped; the middle part of the second spring piece 43 slides into the slot 112, and the end of the second spring piece 43 is engaged in the buckle 111, so that the second spring piece 43 is engaged in the engagement area between the buckle 111 and the slot 112. The bottom of the second spring piece 43 is electrically in contact with the conductive sheet 31, and the top of the second spring piece 43 is electrically in contact with the contact point 21. The G-shaped second spring piece 43 can be bent at the top before installation, so that the top of the second spring piece 43 bends outward. When the circuit board 2 is placed on the receiving cavity 11 after the installation of the second spring piece 43 is completed, the top of the second spring piece 43 firmly contacts the contact point 21 on the circuit board 2.

[0040] Please refer to Figures 1-7 .

[0041] During assembly:

[0042] The two batteries 3 with the conductive sheets 31 connected are placed into the receiving cavity 11, and the first and second buffer sponges are filled into the receiving cavity 11 to constrain the batteries 3 within the receiving cavity 11.

[0043] The second spring piece 43 is snapped between the buckle 111 and the slot 112, so that the bottom of the second spring piece 43 constrains one of the conductive pieces 31 on the battery 3 within the snap-fit ​​area and makes electrical contact with it; after the installation of the two second spring pieces 43 is completed, the circuit board 2 is placed on the receiving cavity 11, so that two of the contacts 21 make electrical contact with the top of the second spring piece 43 respectively.

[0044] The first spring piece 41 is pushed through the slot 12, and the end faces of the first spring piece 41 are engaged with the edge of the slot 12. At the same time, the limiting block 412 is engaged in the limiting groove 121, and the limiting block 412 touches the edge of the slot 12, constraining the first spring piece 41 in the receiving cavity 11. The two ends of the first spring piece 41 are electrically in contact with the adjacent contact 21 and the adjacent conductive sheet 31, respectively. The circuit board 2 connects the two batteries 3 in parallel in the receiving cavity 11. The limiting ring 42 is sleeved on the outside of the connecting part 411. The two inserts 421 pass through the two notches and touch the two ends of the first spring piece 41, and the limiting ring 42 is engaged in the mounting groove 122. The two inserts 421 constrain the first spring piece 41 to detach from the receiving cavity 11.

[0045] The wires of the external power battery pack 3 are electrically connected to the two connecting parts 411 of the receiving cavity 11, thereby connecting the battery pack 3 to the external power battery pack 3.

[0046] When one of the batteries 3 in the housing cavity 11 fails and stops operating, the control circuit disconnects the parallel connection of the battery 3. The other battery 3 in the housing cavity 11 then directs the current to the first spring 41 through the circuit board 2, thus preventing the other parallel battery 3 in the housing cavity 11 from stopping outputting current due to the failure of a single battery 3.

[0047] This invention provides a battery pack that is easy to install. The battery is placed in a receiving cavity, with one of its conductive plates positioned in a snap-fit. A second spring clip is snapped into the snap-fit ​​and installed in the receiving cavity, making electrical contact with the conductive plate. A circuit board is then placed over the receiving cavity, making electrical contact with the contacts adjacent to the second spring clip. A first spring clip is pushed through a slot and snapped into the edge of the slot, while a limiting block abuts against the edge of the slot, thus confining the first spring clip within the receiving cavity. Both ends of the first spring clip make electrical contact with adjacent contacts and adjacent conductive plates, respectively. The circuit board connects the batteries in the receiving cavity in parallel. The wires of an external power battery pack are electrically connected to two connecting parts, connecting this battery pack to the external power battery pack. The first and second spring clips are installed in the receiving cavity via a snap-fit ​​method, replacing traditional bolt connections and significantly simplifying the operation of installing connecting components in the confined space of the receiving cavity.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A battery pack that is easy to install, characterized in that, Includes a storage box and multiple batteries; The receiving box has a receiving cavity inside, the receiving cavity is covered with a circuit board, the inner wall of the receiving cavity has two slots, the circuit board has multiple contacts, and multiple buckles extend into the receiving cavity; The positive and negative terminals of the battery are electrically connected to conductive sheets. A connecting assembly is installed inside the receiving cavity. The connecting assembly includes two first spring contacts and multiple second spring contacts. The first spring contacts abut against the edge of the slot. The two ends of the first spring contacts are electrically in contact with adjacent contacts and adjacent conductive sheets, respectively. A connecting portion extending out of the slot is provided on the first spring contact. A limiting block is provided on the connecting portion. The limiting block abuts against the edge of the slot. The second spring contacts are snapped into the buckle. The two ends of the second spring contacts abut against adjacent contacts and adjacent conductive sheets, respectively.

2. The battery pack for easy installation as described in claim 1, characterized in that, The outer side of the receiving box is provided with a limiting groove corresponding to the slot, the slot is located in the limiting groove, and the limiting block is engaged in the limiting groove.

3. The battery pack for easy installation as described in claim 2, characterized in that, The outer side of the receiving box is provided with a corresponding mounting groove. The limiting groove is located in the mounting groove. Notches are provided on both sides of the limiting block. A limiting ring is sleeved on the outer side of the connecting part. Two inserts extend from the limiting ring. The two inserts pass through the two notches and touch the two ends of the first spring piece. The limiting ring is engaged in the mounting groove.

4. The battery pack for easy installation as described in claim 1, characterized in that, The receiving cavity is provided with a corresponding buckle groove, and the second spring clip is inserted between the buckle and the groove.

5. The battery pack for easy installation as described in claim 1, characterized in that, The circuit board is covered with a heat-conducting sheet, and the inner wall of the receiving cavity has multiple heat dissipation grooves running through it.

6. A battery pack that is easy to install as described in any one of claims 1, 3, 4 or 5, characterized in that, There are two receiving cavities, which are located on both sides of the receiving box.

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