Battery pack

Abstract

The utility model provides a battery pack. The battery pack comprises a base plate, side plates, a top plate, a first connecting plate, a second connecting plate and a mounting block, a rectangular space is defined by the base plate, the pair of side plates, the top plate, the first connecting plate and the second connecting plate, the multiple mounting blocks are arranged in the rectangular space, the multiple battery modules are connected into the mounting blocks, the multiple battery modules are electrically connected, and heating pieces are arranged in the mounting blocks. According to the battery pack, the mounting block, the battery module and the heating piece are matched with one another, and the heating piece can heat the battery module through the mounting block, so that the use efficiency of the battery pack in a cold state is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery pack. Background Art

[0002] With the rapid development of the new energy vehicle industry, new energy vehicles have been used more and more widely. In order to improve the driving range and safety performance of the vehicle, various automobile manufacturers are committed to improving the energy density of battery modules. With the technological development trend of the power battery industry, it is moving towards higher and higher energy density. For battery pack products, they can include "large modules (that is, battery modules including more batteries)", so that as many batteries as possible can be placed in the limited space of the battery pack, thereby maximizing the overall energy density of the battery pack.

[0003] At present, the existing battery packs will affect the efficiency of battery use in cold conditions during actual use; at the same time, the existing battery packs are covered with multiple tiny battery modules inside, and the multiple battery modules form a whole, so that the battery pack is not easy to repair when an abnormality occurs. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to ensure the use efficiency of the battery pack in a cold state.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A battery pack comprises a base plate (100), a side plate (200), a top plate (400), a first connecting plate (300), a second connecting plate (600), and a mounting block (500); the base plate (100), a pair of side plates (200), the top plate (400), the first connecting plate (300), and the second connecting plate (600) enclose a rectangular space; a plurality of the mounting blocks (500) are provided and are all arranged in the rectangular space; a plurality of battery modules (10) are connected in the mounting blocks (500); the plurality of battery modules (10) are electrically connected to each other; and a heating element (520) is provided in the mounting block (500).

[0007] Beneficial effect: Through the cooperation of the mounting block, the battery module and the heating element, the heating element can heat the battery module through the mounting block, thereby ensuring the efficiency of the battery pack in cold conditions.

[0008] Furthermore, the mounting block (500) is slidably connected to the base plate (100).

[0009] Furthermore, a plurality of guide grooves (103) are provided on the base plate (100), and the plurality of guide grooves (103) are arranged in parallel with each other. The bottom of the mounting block (500) is fixedly connected with a limit block (510), and the limit block (510) and the guide groove (103) are slidably connected.

[0010] Furthermore, a guiding surface (1030) is provided at the opening of the guiding groove (103).

[0011] Beneficial effect: By setting the guide surface, the stability between the mounting block and the base plate during the connection process can be improved.

[0012] Furthermore, a mounting groove (501) is provided in the mounting block (500), a plurality of battery modules (10) are connected in the mounting groove (501), and a side wall of the mounting block (500) is a double-layer structure, and a heating element (520) is provided between the double-layer structure.

[0013] Furthermore, the inner side of the side wall of the mounting block (500) close to the mounting groove (501) is a heat conducting layer (502), the inner side away from the mounting groove (501) is a heat insulating layer (503), and the middle part is a heating element (520).

[0014] Beneficial effect: Through the arrangement of the side walls of the mounting blocks, different mounting blocks are independent of each other, so that the battery modules in different mounting blocks can be repaired or replaced independently.

[0015] Furthermore, the heat insulation layer (503) is made of fireproof material.

[0016] Furthermore, a plurality of long strip-shaped fixing blocks (201) are fixedly connected to the side plate (200), the fixing blocks (201) are located at the ends of the side plate (200), and the plurality of fixing blocks (201) are arranged in parallel; a limiting member (330) is fixedly connected to the first connecting plate (300) and the second connecting plate (600) near the fixing blocks (201), respectively, the limiting member (330) and the fixing blocks (201) are arranged correspondingly, a notch is provided on the limiting member (330), the notch has the same shape as the fixing block (201), and the notch and the fixing block (201) can be mutually engaged.

[0017] Beneficial effect: Through the mutual cooperation of the notch and the fixing block, the stability of the first connecting plate, the second connecting plate and the side plate during connection can be improved.

[0018] Furthermore, the first connecting plate (300) and the second connecting plate (600) are respectively fixedly connected with a top block (320), and both ends of the mounting block (500) are clamped between the top blocks (320) of the first connecting plate (300) and the second connecting plate (600).

[0019] Beneficial effect: By setting the top block, the stability of the battery during use can be effectively improved.

[0020] Furthermore, a plurality of connection terminals (340) are provided on the first connection plate (300), and the connection terminals (340) are arranged corresponding to the mounting block (500). A connection hole (102) is opened on the substrate (100), and a contact is provided in the connection hole (102). The contact is electrically connected to the heating element (520) in a contact manner, and the connection terminal (340) is electrically connected to the contact, and the free end of the connection terminal (340) is electrically connected to a power source.

[0021] Beneficial effect: through the cooperation of the connecting terminals, contacts, heating elements and power supply, when the contacts on the substrate are connected to the connecting terminals, the heating elements connected to the contacts can be energized by the power supply to heat the inner side of the mounting block.

[0022] The advantages of the utility model are:

[0023] In the utility model, the mounting block, the battery module and the heating element cooperate with each other, and the heating element can heat the battery module through the mounting block, thereby ensuring the use efficiency of the battery pack in a cold state.

[0024] The utility model can improve the stability between the mounting block and the base plate during the connection process by setting the guide surface.

[0025] In the utility model, different mounting blocks are in a mutually independent state by setting the side walls of the mounting blocks, so that the battery modules in different mounting blocks can be repaired or replaced independently.

[0026] The utility model can improve the stability of the first connecting plate, the second connecting plate and the side plate during the connection process through the mutual cooperation of the notch and the fixing block.

[0027] The utility model can effectively improve the stability of the battery during use by setting the top block.

[0028] The utility model cooperates with each other through the connection terminals, contacts, heating elements and power supply. When the contacts on the substrate are connected to the connection terminals, the power supply can energize the heating elements connected to the contacts to heat the inner side of the mounting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A top view of a battery pack according to a first embodiment of the present utility model;

[0030] Figure 2 This is a three-dimensional diagram of a battery pack (the second connecting plate is omitted) according to a first embodiment of the present utility model;

[0031] Figure 3 This is a three-dimensional view of a battery pack (the second connecting plate is omitted) according to the first embodiment of the utility model from another perspective;

[0032] Figure 4 This is a three-dimensional diagram of a mounting block in a battery pack according to a first embodiment of the utility model;

[0033] Figure 5 It is a front cross-sectional view of a side wall of a mounting block in a battery pack according to a first embodiment of the utility model;

[0034] Figure 6 for Figure 2 A magnified view of middle;

[0035] Figure 7 It is a bottom view of a battery pack (the second connecting plate is omitted) according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Embodiment 1

[0038] like Figure 1 , Figure 2 As shown, the present embodiment provides a battery pack, including a substrate 100, a side plate 200, a top plate 400, a first connecting plate 300, a second connecting plate 600 and a mounting block 500 connected to the substrate 100; the mounting blocks 500 are provided in multiple groups, each of which is connected with a plurality of battery modules 10, and the plurality of battery modules 10 are electrically connected to each other to construct a battery module.

[0039] like Figure 2As shown, a plurality of guide grooves 103 are provided on the substrate 100, and the plurality of guide grooves 103 are arranged in parallel. The mounting block 500 is detachably connected to the substrate 100 through the guide grooves 103. The bottom of the mounting block 500 is fixedly connected to a limiting block 510, and the limiting block 510 is slidably connected to the guide groove 103. The detachable connection between the mounting block 500 and the substrate 100 is achieved through the sliding connection between the limiting block 510 and the guide groove 103. In order to improve the stability between the mounting block 500 and the substrate 100 during the connection process, a guiding surface 1030 is provided at the opening of the guiding groove 103. The guiding surface 1030 of the present embodiment adopts a chamfered structure, and the limiting block 510 is easily embedded in the guiding groove 103 through the guiding surface 1030.

[0040] like Figure 2 As shown, a plurality of mounting holes 101 are provided on the base plate 100, and the base plate 100 can be fixedly installed through the mounting holes 101;

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, two groups of side panels 200 are provided, and the two groups of side panels 200 are respectively fixedly connected to the base plate 100, and the two groups of side panels 200 are arranged in parallel, and the ends of the side panels 200 are respectively connected to the first connecting plate 300 and the second connecting plate 600; in order to improve the stability of the connection between the side panels 200 and the base plate 100, a plurality of plate ribs 202 are fixedly connected between the side panels 200 and the base plate 100, and the plurality of plate ribs 202 are arranged in parallel, which can effectively improve the connection effect between the side panels 200 and the base plate 100; a sliding groove 203 is provided on the side panels 200, and is located between the two side panels 200 The slide grooves 203 on the top are symmetrically arranged, and a top plate 400 is fixed between the two slide grooves 203. The top plate 400 and the side plate 200 are fixedly connected by bolts; the first connecting plate 300 and the second connecting plate 600 are also bolted to the side plate 200, and the first connecting plate 300 and the second connecting plate 600 are respectively fixedly connected with a top block 320, and the two ends of the mounting block 500 are clamped between the top blocks 320 of the first connecting plate 300 and the second connecting plate 600. The top block 320 at the end of the mounting block 500 can effectively improve the stability of the battery during use.

[0042] like Figure 2 , Figure 4 , Figure 5As shown, a mounting groove 501 is opened in the mounting block 500, and a plurality of battery modules 10 are connected in the mounting groove 501. The side wall of the mounting block 500 is a double-layer structure, and a heating element 520 that allows heat generation is arranged between the double-layer structure. The heating effect of the heating element 520 is used to increase the temperature in the mounting groove 501. After ensuring the problem of the battery in the mounting groove 501, the efficiency of the battery during use is further improved; specifically, for the side wall of the mounting block 500, the inner side close to the mounting groove 501 is a heat conductive layer 502, and the side away from the mounting groove 501 is a heat insulating layer 503. Therefore, different mounting blocks 500 are in an independent state, so as to facilitate independent maintenance or replacement of the battery modules 10 in different mounting blocks 500; the heat insulating layer 503 allows the use of fireproof materials, so that different mounting blocks 500 are in an independent state, which is easy to quickly replace and repair them.

[0043] like Figure 2 , Figure 6 As shown, a plurality of long strip-shaped fixing blocks 201 are fixedly connected to the side panel 200, and the fixing blocks 201 are located at the ends of the side panel 200, and the plurality of fixing blocks 201 are arranged in parallel; the first connecting plate 300 and the second connecting plate 600 are respectively fixedly connected with the limiting members 330 near the fixing blocks 201, and the limiting members 330 and the fixing blocks 201 are arranged correspondingly, and a notch is provided on the limiting member 330, and the notch has the same shape as the fixing block 201. The mutual clamping between the notch and the fixing block 201 can improve the stability of the first connecting plate 300, the second connecting plate 600 and the side panel 200 during the connection process.

[0044] like Figure 3 , Figure 4 , Figure 7 As shown, a plurality of connection terminals 340 are also provided on the first connection plate 300, and the connection terminals 340 are arranged corresponding to the mounting block 500. A connection hole 102 is opened on the substrate 100, and a contact is provided in the connection hole 102. The contact is electrically connected to the heating element 520 in a contact manner, and the connection terminal 340 is electrically connected to the contact. The free end of the connection terminal 340 is electrically connected to a power source. When the contact on the substrate 100 is connected to the connection terminal 340, the heating element 520 connected to the contact can be energized by the power source. The heating element 520 adopts a heating wire, and the inner side of the mounting block 500 is heated by energizing the heating wire. In another case, an electrical terminal 310 is fixedly connected to the first connection plate 300, and the electrical terminal 310 is electrically connected to the plurality of connection terminals 340. The electrical terminal 310 is externally connected to a power source, and the electrical terminal 310 can output power to different mounting blocks 500.

[0045] When in use, multiple mounting blocks 500 equipped with battery modules 10 are arranged along the X-axis and slid into the guide groove 103 opened on the substrate 100. The heating element 520 is connected to the external power supply through the contacts, connection terminals 340 and electrical terminals 310 set in the connecting hole 102. The external power supply can heat the battery module 10 therein through the heating element 520, which can effectively improve the efficiency of the battery during use. At the same time, the insulation layer 503 is made of fireproof material, so that different mounting blocks 500 are in an independent state, which is easy to quickly replace and repair them.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack, characterized in that: It comprises a base plate (100), a side plate (200), a top plate (400), a first connecting plate (300), a second connecting plate (600), and a mounting block (500); The base plate (100), a pair of side plates (200), a top plate (400), a first connecting plate (300), and a second connecting plate (600) enclose a rectangular space; a plurality of mounting blocks (500) are provided and are all arranged in the rectangular space; a plurality of battery modules (10) are connected in each mounting block (500); the plurality of battery modules (10) are electrically connected to each other; and a heating element (520) is provided in the mounting block (500); The mounting block (500) is provided with a mounting groove (501), a plurality of battery modules (10) are connected in the mounting groove (501), the side wall of the mounting block (500) is a double-layer structure, and a heating element (520) is arranged between the double-layer structure; the inner side of the side wall of the mounting block (500) close to the mounting groove (501) is a heat-conducting layer (502), the side away from the mounting groove (501) is a heat-insulating layer (503), and the middle part is a heating element (520).

2. A battery pack according to claim 1, characterized in that: The mounting block (500) is slidably connected to the base plate (100).

3. A battery pack according to claim 2, characterized in that: The base plate (100) is provided with a plurality of guide grooves (103), the plurality of guide grooves (103) are arranged in parallel, the bottom of the mounting block (500) is fixedly connected to a limit block (510), and the limit block (510) and the guide groove (103) are slidably connected.

4. A battery pack according to claim 3, characterized in that: A guiding surface (1030) is provided at the opening of the guiding groove (103).

5. A battery pack according to claim 1, characterized in that: The heat insulation layer (503) is made of fireproof material.

6. A battery pack according to claim 1, characterized in that: A plurality of long strip-shaped fixing blocks (201) are fixedly connected to the side plate (200), the fixing blocks (201) are located at the ends of the side plate (200), and the plurality of fixing blocks (201) are arranged in parallel; a limiting member (330) is fixedly connected to the first connecting plate (300) and the second connecting plate (600) near the fixing blocks (201), the limiting member (330) and the fixing blocks (201) are arranged correspondingly, a notch is provided on the limiting member (330), the notch has the same shape as the fixing block (201), and the notch and the fixing block (201) can be mutually engaged.

7. A battery pack according to claim 1, characterized in that: The first connecting plate (300) and the second connecting plate (600) are respectively fixedly connected with a top block (320), and both ends of the mounting block (500) are clamped between the top blocks (320) of the first connecting plate (300) and the second connecting plate (600).

8. The battery pack according to claim 1, characterized in that: A plurality of connection terminals (340) are arranged on the first connection plate (300), and the connection terminals (340) are arranged corresponding to the mounting block (500). A connection hole (102) is opened on the substrate (100), and a contact is arranged in the connection hole (102). The contact is electrically connected to the heating element (520) in a contact manner, and the connection terminal (340) is electrically connected to the contact, and the free end of the connection terminal (340) is electrically connected to a power source.

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