Hard-shell battery pack

Abstract

The invention provides a hard-shell battery pack, and relates to the technical field of secondary batteries, the hard-shell battery pack comprises an outer frame internally provided with a plurality of clamping grooves, battery bodies mounted in the clamping grooves, a plurality of heating devices mounted in the outer frame and located between the clamping grooves, gaskets mounted at the bottom of the outer frame, and control modules mounted in the gaskets, the outer end of the outer frame is detachably provided with a side frame, the side frame and the outer frame are connected through a bolt or a buckle, the two ends of the battery bodies are embedded into the inner walls of the clamping grooves, the embedding width is larger than or equal to 0.8 cm, the heating device comprises a plurality of heating plates, the heating plates are located between the battery bodies, and the battery monomers are heated through the heating plates. And the lithium ion battery is particularly suitable for being used in extremely cold areas, and low-temperature long-cycle operation is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of secondary batteries, and more particularly to a hard-shell battery pack. Background Art

[0002] At present, lithium batteries on the battery market usually have two types of packaging, soft pack and hard shell. The development of new energy vehicles is of great significance to saving resources and improving the environment. At the same time, the development of batteries, the energy source of new energy vehicles, is crucial to the promotion of new energy vehicles. Conventional batteries include positive electrodes, negative electrodes, separators, positive electrode current collectors, negative electrode current collectors, electrolytes and battery covers, which are composed of the battery cell and also include the battery shell. Lithium-ion batteries have become the first choice for new energy vehicle batteries due to their advantages such as high energy density, high power density, long life and no memory effect.

[0003] However, the performance of lithium-ion batteries is limited by the ambient temperature. In low-temperature environments, the ionic conductivity of key materials such as electrolytes drops rapidly, resulting in a significant drop in the charge and discharge rate of lithium-ion batteries, and even the inability to charge and discharge; it is difficult to break through the technology of low-temperature long cycles. Summary of the invention

[0004] The technical problem to be solved by the present invention is that under low temperature environment, the ionic conductivity of key materials such as electrolytes decreases rapidly, resulting in a significant decrease in the charge and discharge rate of lithium-ion batteries, and even the situation where charging and discharging cannot occur; it is difficult to break through the technology of low temperature long cycle. In view of the problems existing in the prior art, a hard shell battery pack is provided, which is specifically achieved by the following technical means: A hard shell battery pack, comprising: The outer frame has a plurality of card slots inside, and the battery body is installed inside the card slots; A plurality of heating devices are provided, which are installed inside the outer frame and located between the card slots; The gasket is installed at the bottom of the outer frame, and the control module is installed inside the gasket.

[0005] Optimal solution: A side frame is detachably mounted on the outer end of the outer frame.

[0006] Optimal solution: the side frame and the outer frame are connected via bolts or snaps.

[0007] Preferred solution: Both ends of the battery body are embedded in the inner wall of the slot, and the embedding width is ≥0.8 cm.

[0008] Preferred solution: the heating device comprises a plurality of heating plates, and the heating plates are located between the battery bodies.

[0009] Preferred solution: the control module includes a plurality of connecting wires, and the connecting wires are electrically connected to each heating plate.

[0010] Preferred solution: the connecting line is an FPC line.

[0011] Optimal solution: an insertion port is provided at the outer end of the gasket.

[0012] Beneficial effects of the present invention: 1. Use the connecting wire to insert into the socket, and the other end of the connecting wire is electrically connected to the battery module. The control module in the gasket is powered by the battery module. When the temperature sensing module in the module prompts a low temperature, the control module controls the heating plate to turn on, and heats the battery cell through the heating plate to maintain the normal cycle of the battery cell. It is especially suitable for use in extremely cold areas and can achieve low-temperature and long-cycle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention; Figure 2 It is an internal side view of the outer frame structure of the present invention; Figure 3 A top view of the outer frame structure of the present invention; In the figure: an outer frame (1), a card slot (101), a side frame (2), a heating plate (3), a gasket (4), a control board (5), and a battery body (6). Implementation

[0014] See also Figure 1-Figure 3 , a hard shell battery pack, comprising: The outer frame 1 is provided with a plurality of slots 101 inside, and a battery body 6 is installed inside the slot 101. A plurality of battery bodies 6 are assembled with the outer frame 1 to form a small battery pack. In order to increase the storage energy of the battery module, a plurality of small battery packs can be prepared and assembled into a large battery pack to form a power battery pack or a container energy storage system. Furthermore, the outer end of the outer frame 1 is detachably mounted with a side frame 2, and the side frame 2 is connected to the outer frame 1 by bolts or buckles. The side frame 2 is easy to disassemble and assemble, and is convenient for inspecting a single battery body 6. Figure 1 As shown in the figure, the side frame 2 is installed with the outer frame 1 by bolts. When the side frame 2 needs to be disassembled, just unscrew the bolts; Specifically, both ends of the battery body 6 are embedded in the inner wall of the slot 101, and the embedding width is ≥0.8 cm. The slot 101 is more stably embedded in the battery body 6, and the connection area is large, which can maintain the stability of the overall installation of the battery body 6 and the module.

[0015] See also Figure 1-Figure 3, a heating device is provided with a plurality of heating plates 3 installed inside the outer frame 1 and located between the card slots 101, and the heating device includes a plurality of heating plates 3, and the heating plates 3 are located between the battery bodies 6. When the battery bodies 6 are located inside the card slots 101, the outer side of the heating plates 3 is spaced 0.2 cm-1 cm from the battery bodies 6, preferably 0.2 cm; Preferably, the gasket 4 is installed at the bottom of the outer frame 1, and a control module is installed inside the gasket 4. A number of FPC lines are provided in the control module, and the number of FPC lines is consistent with that of the heating plates 3. The connecting line is electrically connected to each heating plate 3. A plug interface is provided at the outer end of the gasket 4, and a connecting line can be inserted into the plug interface. The other end of the connecting line is electrically connected to the battery module, and the control module in the gasket 4 is powered by the battery module. When the temperature sensing module in the module sends a low temperature reminder, the control module controls the heating plate 3 to turn on, and heats the battery cell through the heating plate 3 to maintain the normal cycle of the battery cell. It is especially suitable for use in extremely cold areas and can achieve low-temperature and long-cycle operation.

[0016] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradicting each other. The above is only an embodiment of the embodiment of this specification and is not intended to limit the embodiment of this specification. For those skilled in the art, the embodiment of this specification may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of this specification shall be included within the scope defined by the claims of this specification.

Claims

1. A hard shell battery pack, characterized in that: include: The outer frame has a plurality of card slots inside, and the battery body is installed inside the card slots; A plurality of heating devices are provided, which are installed inside the outer frame and located between the card slots; The gasket is installed at the bottom of the outer frame, and the control module is installed inside the gasket.

2. A hard shell battery pack according to claim 1, characterized in that: The outer end of the outer frame is detachably mounted with a side frame.

3. A hard shell battery pack according to claim 2, characterized in that: The side frame is connected to the outer frame via bolts or buckles.

4. A hard shell battery pack according to claim 1, characterized in that: The two ends of the battery body are embedded in the inner wall of the slot, and the embedding width is ≥0.8cm.

5. The hard shell battery pack according to claim 1, characterized in that: The heating device comprises a plurality of heating plates, and the heating plates are located between the battery bodies.

6. A hard shell battery pack according to claim 1, characterized in that: The control module includes a plurality of connecting wires, and the connecting wires are electrically connected to each heating plate.

7. A hard shell battery pack according to claim 6, characterized in that: The connecting line is an FPC line.

8. The hard shell battery pack according to claim 1, characterized in that: The outer end of the gasket is provided with an insertion interface.

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