Assembled ternary lithium battery

Abstract

The utility model relates to the technical field of ternary lithium batteries, in particular to an assembled ternary lithium battery which comprises a protective shell, two sides of the protective shell are fixedly connected with fixing blocks, the inner side of the protective shell is fixedly connected with an outer shell, the inner side of the outer shell is fixedly connected with a fireproof layer, the inner side of the fireproof layer is provided with limiting grooves which are symmetrically arranged, and the limiting grooves are fixedly connected with the outer shell. According to the three-element lithium battery, through the arrangement of the shell, the fireproof layer, the limiting plate, the fixing groove, the battery bin, the battery groove, the reed, the three-element battery and other components, when a single three-element lithium battery is damaged, only the protective cover needs to be opened, and under the action of the spring, the single three-element lithium battery can be damaged, so that the single three-element lithium battery can be protected. When the ternary lithium battery is replaced, the supporting plate can eject the fireproof layer part out of the battery bin under the limiting of the limiting plate and the fixing groove, then the broken ternary lithium battery can be taken down from the battery groove, and then a new ternary lithium battery is clamped between the reeds, so that replacement can be completed, and replacement of formed pieces is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of ternary lithium batteries, and particularly relates to an assembled ternary lithium battery. Background Technique

[0002] New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. Taking electric vehicles as an example, the battery pack has become one of the key components of electric vehicles. The battery pack includes a housing and a battery module assembled inside the housing. The battery module is basically divided into ternary lithium batteries and lithium iron phosphate batteries. The ternary lithium battery has better stability than other batteries, so it is more widely used in northern regions.

[0003] The existing ternary lithium batteries generally take groups as units. When a certain battery is damaged, it cannot be replaced individually, and multiple batteries need to be replaced at one time, which is very wasteful. When the existing ternary lithium batteries accidentally catch fire, they cannot effectively block the spread, and ultimately will lead to the consequence of the entire vehicle being ignited, which is very dangerous. Therefore, an assembled ternary lithium battery is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an assembled ternary lithium battery to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An assembled ternary lithium battery includes a protective shell. Fixed blocks are fixedly connected to both sides of the protective shell. A housing is fixedly connected to the inner side of the protective shell. A fireproof layer is fixedly connected to the inner side of the housing. Symmetrically arranged limiting grooves are opened on the inner side of the fireproof layer. Limiting plates are snap-connected to the inner sides of the limiting grooves. A battery compartment located inside the fireproof layer is fixedly connected to the inner sides of the limiting plates. A battery slot is opened on one side of the battery compartment. Spring pieces symmetrically arranged up and down are fixedly connected to the inner side of the battery slot. A ternary lithium battery is snap-connected to the inner side of the battery compartment by the spring pieces. A protective cover is arranged on the outer side of the protective shell. A fixing groove is opened at the bottom end of the protective cover. A connecting groove is opened on the inner side of the protective cover. A contact point located inside the connecting groove is fixedly connected to the top end of the battery compartment. A spring is fixedly connected to the inner side of the fireproof layer below the battery compartment. A support plate that fits with the battery compartment is fixedly connected to the top end of the spring.

[0007] Preferably, a fixing block is snap-connected to the inner side of the fixing groove, and the protective cover and the fixing block are detachably connected by bolts in a spiral manner.

[0008] Preferably, one set consists of the fixing block and the fixing groove, and there are four sets of the fixing block and the fixing groove, which are symmetrically arranged between the protective cover and the protective shell.

[0009] Preferably, one set consists of the outer shell and the fireproof layer, and there are several sets of the outer shell and the fireproof layer, which are evenly arranged in a matrix on the inner side of the protective shell.

[0010] Preferably, one set consists of the spring and the support plate, and there are several sets of the spring and the support plate, which are evenly arranged at the relative central position inside the fireproof layer.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, through components such as the outer shell, fireproof layer, limiting plate, fixing groove, battery compartment, battery slot, reed, and ternary lithium battery, when a single ternary lithium battery is damaged, only need to open the protective cover. Under the action of the spring, the support plate will pop out the battery compartment from the fireproof layer part under the limitation of the limiting plate and the fixing groove, and then the damaged ternary lithium battery can be removed from the battery slot. After that, a new ternary lithium battery can be clamped between the reeds to complete the replacement, without the need to replace the whole group. Thus, it solves the problem that existing ternary lithium batteries are generally in groups, and when one of the batteries is damaged, it cannot be replaced individually, and multiple batteries need to be replaced at one time, which is very wasteful.

[0013] 2. In the present utility model, through components such as the outer shell, protective layer, and battery compartment, each ternary lithium battery is separately isolated by the battery compartment, outer shell, and fireproof layer, avoiding the spread of fire. The fireproof layer can effectively retard the fire, enabling the burning ternary lithium battery to burn independently within the fireproof layer. Thus, it solves the problem that when an existing ternary lithium battery accidentally catches fire, it cannot effectively block the spread, and ultimately the entire vehicle will be ignited, which is very dangerous. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic sectional structure diagram of the present utility model;

[0016] Figure 3 is a schematic top sectional structure diagram of the present utility model;

[0017] Figure 4 is a schematic top sectional structure diagram of the protective shell of the present utility model;

[0018] Figure 5 is a schematic bottom structure diagram of the protective cover of the present utility model.

[0019] In the figure: 1. Protective shell; 2. Fixed block; 3. Limit groove; 4. Outer shell; 5. Fireproof layer; 6. Limit plate; 7. Battery compartment; 8. Battery slot; 9. Reed; 10. Lithium ternary battery; 11. Protective cover; 12. Fixed groove; 13. Connection groove; 14. Contact; 15. Bolt; 16. Spring; 17. Support plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without further declaration, the above terms have no special meaning, so they cannot be understood as limiting the protection scope of the present invention.

[0023] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0024] An assembled lithium ternary battery includes a protective shell 1. Fixed blocks 2 are fixedly connected to both sides of the protective shell 1. An outer shell 4 is fixedly connected to the inner side of the protective shell 1. A fireproof layer 5 is fixedly connected to the inner side of the outer shell 4. Symmetrically arranged limit grooves 3 are opened on the inner side of the fireproof layer 5. A limit plate 6 is snap-fitted in the limit groove 3. A battery compartment 7 located in the fireproof layer 5 is fixedly connected to the inner side of the limit plate 6. A battery slot 8 is opened on one side of the battery compartment 7. Reed 9s symmetrically arranged up and down are fixedly connected to the inner side of the battery slot 8. A lithium ternary battery 10 is snap-fitted in the battery compartment 7 by the reed 9s. A protective cover 11 is provided on the outer side of the protective shell 1. A fixed groove 12 is opened at the bottom end of the protective cover 11. A connection groove 13 is opened on the inner side of the protective cover 11. A contact 14 located in the connection groove 13 is fixedly connected to the top end of the battery compartment 7. A spring 16 located below the battery compartment 7 is fixedly connected to the inner side of the fireproof layer 5. A support plate 17 in contact with the battery compartment 7 is fixedly connected to the top end of the spring 16.

[0025] A fixing block 2 is snap-fitted inside the fixing groove 12. The protective cover 11 and the fixing block 2 are detachably connected by a bolt 15 in a spiral manner. The fixing block 2 and the fixing groove 12 form a group, and there are four groups of the fixing block 2 and the fixing groove 12, which are symmetrically arranged between the protective cover 11 and the protective shell 1. The outer shell 4 and the fireproof layer 5 form a group, and there are several groups of the outer shell 4 and the fireproof layer 5. The outer shell 4 and the fireproof layer 5 are uniformly arranged in a matrix inside the protective shell 1. The spring 16 and the support plate 17 form a group, and there are several groups of the spring 16 and the support plate 17. The spring 16 and the support plate 17 are uniformly arranged at the relative central position inside the fireproof layer 5.

[0026] Workflow: When an assembled ternary lithium battery needs to be used and a single ternary lithium battery 10 is damaged, just open the protective cover 11. Under the action of the spring 16, the support plate 17 will pop out a part of the battery compartment 7 from the fireproof layer 5 under the limitation of the limiting plate 6 and the fixing groove 12. Then the damaged ternary lithium battery 10 can be removed from the battery slot 8. After that, a new ternary lithium battery 10 is clamped between the reed pieces 9, and the replacement can be completed without replacing the whole group or piece. After the replacement, align the fixing groove 12 of the protective cover 11 with the fixing block 2, and then press down the protective cover 11 to make the protective cover 11 and the protective shell 1 completely snap together. At this time, the fixing block 2 will also snap into the fixing groove 12. The connecting groove 13 in the protective cover 11 will snap with the contact 14, and the battery compartment 7 is completely fixed in the fireproof layer 5 through the contact 14. Finally, the protective cover 11 and the protective shell 1 are fixed together by passing the bolt 15 through the protective cover 11 and the fixing block 2. Each ternary lithium battery 10 is separately isolated by the provided battery compartment 7, the outer shell 4 and the fireproof layer 5 to avoid the spread of fire. The fireproof layer 5 can effectively retard combustion, enabling the burning ternary lithium battery 10 to burn independently inside the fireproof layer 5 and the outer shell 4.

[0027] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An assembled ternary lithium battery, comprising a protective case (1), characterized in that: Both sides of the protective case (1) are fixedly connected with fixing blocks (2). The inner side of the protective case (1) is fixedly connected with an outer shell (4). The inner side of the outer shell (4) is fixedly connected with a fireproof layer (5). Symmetrically arranged limiting grooves (3) are formed in the inner side of the fireproof layer (5). A limiting plate (6) is snap-connected in the inner side of the limiting groove (3). The inner side of the limiting plate (6) is fixedly connected with a battery compartment (7) located in the fireproof layer (5). A battery slot (8) is formed in one side of the battery compartment (7). Spring pieces (9) symmetrically arranged up and down are fixedly connected in the inner side of the battery slot (8). A ternary lithium battery (10) is snap-connected in the inner side of the battery compartment (7) by the spring pieces (9). A protective cover (11) is arranged on the outer side of the protective case (1). A fixing groove (12) is formed in the bottom end of the protective cover (11). A connecting groove (13) is formed in the inner side of the protective cover (11). A contact (14) located in the connecting groove (13) is fixedly connected to the top end of the battery compartment (7). A spring (16) located below the battery compartment (7) is fixedly connected to the inner side of the fireproof layer (5). The top end of the spring (16) is fixedly connected with a support plate (17) that fits the battery compartment (7).

2. The assembled ternary lithium battery according to claim 1, wherein: A fixing block (2) is snap-connected in the inner side of the fixing groove (12). The protective cover (11) and the fixing block (2) are detachably connected by a bolt (15).

3. The assembled ternary lithium battery according to claim 2, wherein: The fixing block (2) and the fixing groove (12) form a group. There are four groups of the fixing block (2) and the fixing groove (12), and they are symmetrically arranged between the protective cover (11) and the protective case (1).

4. The assembled ternary lithium battery according to claim 1, characterized in that: The outer shell (4) and the fireproof layer (5) form a group. There are several groups of the outer shell (4) and the fireproof layer (5), and the outer shell (4) and the fireproof layer (5) are evenly arranged in a matrix inside the protective case (1).

5. The assembled ternary lithium battery according to claim 1, characterized in that: The spring (16) and the support plate (17) form a group. There are several groups of the spring (16) and the support plate (17), and the spring (16) and the support plate (17) are evenly arranged at the relative central position inside the fireproof layer (5).

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