Blade battery and vehicle

Abstract

The utility model relates to the technical field of vehicles, and particularly discloses a blade battery and a vehicle, and the blade battery comprises a battery box body and a blade battery module, wherein the blade battery module is accommodated in the battery box body, the blade battery module comprises a plurality of battery cell assemblies and a plurality of cold liquid plates, the plurality of cold liquid plates are arranged in parallel at intervals along a first direction, one battery cell assembly is arranged between any two adjacent cold liquid plates, cooling flow channels are arranged in the cold liquid plates, and the cooling flow channels of the plurality of cold liquid plates are sequentially connected in series; the first end plate and the second end plate are arranged in a spaced mode in the second direction, the battery cells are located between the first end plate and the second end plate and sequentially stacked in the second direction, and the second direction is perpendicular to the first direction. The cooling liquid plates are arranged on the two sides of each battery cell assembly, so that the heat dissipation effect on each battery cell assembly can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a blade battery and a vehicle. Background Art

[0002] Blade batteries have high volume density and energy density, good safety, and can pass the needle puncture test without catching fire or exploding. They are increasingly being used in new energy vehicles.

[0003] A blade battery generally includes a battery box and a plurality of battery modules arranged in the battery box. The battery module includes a plurality of stacked battery cells. In order to improve the heat dissipation capacity of the blade battery, a liquid cooling method is generally adopted in the prior art. Specifically, a liquid cooling plate is arranged on both sides of the battery cell. The coolant flows through the cold liquid plate to take away the heat generated by the battery cell. However, the liquid cooling method has a poor heat dissipation effect on the battery cells in the middle part of the battery module. Utility Model Content

[0004] The purpose of the utility model is to provide a blade battery and a vehicle to improve the cooling capacity of the battery cells in the middle part of the battery module.

[0005] In one aspect, the utility model provides a blade battery, which comprises:

[0006] Battery box;

[0007] A blade battery module is accommodated in the battery case, and the blade battery module includes a plurality of battery cell assemblies and a plurality of cold liquid plates. Along a first direction, the plurality of cold liquid plates are arranged in parallel and at intervals, and one battery cell assembly is arranged between any two adjacent cold liquid plates. A cooling channel is arranged in the cold liquid plate, and the cooling channels of the plurality of cold liquid plates are connected in series in sequence. The battery cell assembly includes a first end plate and a second end plate arranged at intervals along a second direction, and a plurality of battery cells that are located between the first end plate and the second end plate and are stacked in sequence along the second direction, and the second direction is perpendicular to the first direction.

[0008] As a preferred technical solution for the blade battery, in any two adjacent battery cell assemblies, the two first end plates are plug-fitted together, and the two second end plates are plug-fitted together.

[0009] As a preferred technical solution for the blade battery, the blade battery module also includes a cable tie, which is used to tie together a plurality of the battery cell assemblies and a plurality of the cold liquid plates.

[0010] As a preferred technical solution for the blade battery, each of the cold liquid plates is provided with a liquid inlet interface and a liquid outlet interface connected to the cooling channel, and the liquid inlet interface and the liquid outlet interface are respectively located at two ends of the cold liquid plate.

[0011] As a preferred technical solution for the blade battery, the liquid inlet interface and the liquid outlet interface are both convexly arranged on the end surface of the cold liquid plate.

[0012] As an optimal technical solution for the blade battery, the battery case includes a base, a battery cover covered on the base, and bolts connecting the base and the battery cover. The base and the battery cover are arranged to form a accommodating space for accommodating the blade battery module.

[0013] As a preferred technical solution for the blade battery, the battery cover is provided with an opening, and the battery case also includes a front panel arranged at the opening, the front panel is provided with an external liquid inlet and an external liquid outlet, and in the cooling channels of several cold liquid plates connected in series in sequence, the two cooling channels located at both ends are respectively connected to the external liquid inlet and the external liquid outlet.

[0014] As a preferred technical solution of the blade battery, the blade battery also includes a thermal insulation plate arranged between the blade battery module and the battery box.

[0015] As a preferred technical solution of the blade battery, the blade battery includes a plurality of blade battery modules, and the plurality of blade battery modules are sequentially arranged in the battery box along the second direction.

[0016] On the other hand, the utility model provides a vehicle, comprising a blade battery in any of the above schemes, wherein the vehicle also comprises a power motor, and the blade battery is used to provide power to the power motor.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model provides a blade battery and a vehicle, wherein the blade battery comprises a battery case and a blade battery module. The blade battery module is contained in the battery case, and the blade battery module comprises a plurality of battery cell assemblies and a plurality of cold liquid plates. Along a first direction, the plurality of cold liquid plates are arranged in parallel and at intervals, and a battery cell assembly is arranged between any two adjacent cold liquid plates. A cooling channel is arranged in the cold liquid plate, and the cooling channels of the plurality of cold liquid plates are sequentially connected in series. The battery cell assembly comprises a first end plate and a second end plate arranged at intervals along a second direction, and a plurality of battery cells are located between the first end plate and the second end plate and are sequentially stacked along the second direction, and the second direction is perpendicular to the first direction. By arranging cold liquid plates on both sides of each battery cell assembly, the heat dissipation effect of each battery cell assembly can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the blade battery in the embodiment of the utility model;

[0020] Figure 2 This is an exploded view of a blade battery in an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the blade battery module in the embodiment of the utility model;

[0022] Figure 4 This is an exploded view of the blade battery module in the embodiment of the utility model;

[0023] Figure 5 This is a schematic structural diagram of a plurality of cooling liquid plates of a blade battery module connected in series in an embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the cooling liquid plate in the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Battery box; 11. Base; 12. Battery cover; 13. Bolts; 14. Front panel; 15. External liquid inlet; 16. External liquid outlet;

[0027] 2. Blade battery module; 21. Cold liquid plate; 22. First end plate; 23. Second end plate; 24. Battery cell; 25. Cable tie; 26. Liquid inlet interface; 27. Liquid outlet interface;

[0028] 3. Thermal insulation board. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In order to improve the heat dissipation capacity of the blade battery, liquid cooling is usually adopted in the prior art. Specifically, liquid cooling plates are arranged on both sides of the battery cell 24, and the coolant flows through the cold liquid plate 21 to take away the heat generated by the battery cell 24. However, this liquid cooling method has poor heat dissipation effect on the battery cell 24 in the middle part of the battery module.

[0034] like Figures 1 to 6 As shown, this embodiment provides a blade battery, which includes a battery box 1 and a blade battery module 2. The blade battery module 2 is accommodated in the battery box 1, and the blade battery module 2 includes a plurality of battery cell components and a plurality of cold liquid plates 21, along a first direction (such as Figure 2In the direction indicated by the arrow ab in the middle), a plurality of cooling plates 21 are arranged in parallel and at intervals, a battery core assembly is arranged between any two adjacent cooling plates 21, a cooling channel is arranged in the cooling plate 21, and the cooling channels of the plurality of cooling plates 21 are connected in series in sequence, and the battery core assembly includes a cooling channel connected in the second direction (as shown in ... and a battery core assembly is arranged between any two adjacent cooling plates 21, a cooling channel is arranged in the cooling plate 21, and a cooling Figure 2 The first end plate 22 and the second end plate 23 are arranged in a spaced relationship (in the direction indicated by the arrow cd in the middle), and a plurality of battery cells 24 are located between the first end plate 22 and the second end plate 23 and are stacked in sequence along a second direction, and the second direction is perpendicular to the first direction. The cooling effect of each battery cell assembly can be effectively improved by arranging the cold liquid plates 21 on both sides of each battery cell assembly.

[0035] Specifically, the present embodiment provides an exemplary solution that the blade battery module 2 includes two battery cell components and three cooling plates 21. With such a configuration, the heat dissipation capacity can be increased by three times compared with the prior art, greatly improving the thermal management efficiency of the blade battery. The order in which the three cooling plates 21 are connected in series can be set as required. Specifically, Figure 5 As shown, in this embodiment, two cooling liquid plates 21 located at two ends of the three cooling liquid plates 21 in the first direction are first connected in series, and then connected in series with the cooling liquid plate 21 located in the middle.

[0036] Optionally, in any two adjacent battery cell assemblies, the two first end plates 22 are plugged in and matched, and the two second end plates 23 are plugged in and matched. Such a configuration facilitates the assembly and positioning between the battery cell assemblies, and can prevent the blade battery from failing during use. Specifically, in two adjacent battery cell assemblies, the first end plate 22 of one battery cell assembly is provided with a first protrusion (not shown in the drawings), and the first end plate 22 of the other battery cell assembly is provided with a first groove (not shown in the drawings), and the first protrusion and the first groove are plugged in. In two adjacent battery cell assemblies, the second end plate 23 of one battery cell assembly is provided with a second protrusion (not shown in the drawings), and the second end plate 23 of the other battery cell assembly is provided with a second groove (not shown in the drawings), and the second protrusion and the second groove are plugged in. In other embodiments, the first end plates 22 of the two adjacent battery cell assemblies can also be plugged in with the first pins respectively, and the two second end plates 23 can be plugged in with the second pins respectively.

[0037] Optionally, the first end plate 22 is provided with a first connecting hole (not shown in the drawings), and the second end plate 23 is provided with a second connecting hole (not shown in the drawings), and a first connecting member (not shown in the drawings) is passed through the first connecting hole and connected to the battery case 1, and a second connecting member (not shown in the drawings) is passed through the second connecting hole and connected to the battery case 1, so as to fix the blade battery module 2 to the battery case 1.

[0038] Alternatively, if Figure 3As shown, the blade battery module 2 also includes a cable tie 25, which is used to tie together a number of battery cell assemblies and a number of cold liquid plates 21. This arrangement can effectively improve the overall structural strength of the blade battery module 2, so that it can adapt to the use requirements under high-intensity working conditions, while also ensuring the convenience of assembly and production and maintenance efficiency of the blade battery module 2. Among them, the number of cable ties 25 in the blade battery module 2 can be set according to actual needs. In this embodiment, an exemplary solution is given in which the blade battery module 2 includes two cable ties 25.

[0039] Alternatively, if Figure 5 As shown, each cold liquid plate 21 is provided with a liquid inlet interface 26 and a liquid outlet interface 27 connected to the cooling channel, and the liquid inlet interface 26 and the liquid outlet interface 27 are respectively located at the two ends of the cold liquid plate 21. In this way, the coolant can flow efficiently and flexibly through each cold liquid plate 21, further enhancing the heat dissipation performance of the blade battery module 2. Among them, the number of liquid inlet interfaces 26 and liquid outlet interfaces 27 provided on the cold liquid plate 21 can be set according to actual needs, but it is preferable not to exceed four. In this embodiment, a solution in which a liquid inlet interface 26 and a liquid outlet interface 27 are provided on the cold liquid plate 21 is exemplified. When multiple liquid inlet interfaces 26 and multiple liquid outlet interfaces 27 are provided on the cold liquid plate 21, in the two cold liquid plates 21 connected in series, the multiple liquid outlet interfaces 27 of one cold liquid plate 21 and the multiple liquid inlet interfaces 26 of the other cold liquid plate 21 are connected one by one.

[0040] Alternatively, if Figure 5 and Figure 6 As shown, the liquid inlet interface 26 and the liquid outlet interface 27 are both convexly arranged on the end surface of the cold liquid plate 21. Such an arrangement enables the cold liquid plate 21 to adopt an integral structure, thereby improving the stability of the overall structure and ensuring the sealing performance. The liquid inlet interface 26 and the liquid outlet interface 27 can be welded or bonded to the cold liquid plate 21.

[0041] Alternatively, if Figure 2 As shown, the battery case 1 includes a base 11, a battery cover 12 covered on the base 11, and a bolt 13 connecting the base 11 and the battery cover 12. The base 11 and the battery cover 12 are arranged to form a storage space for accommodating the blade battery module 2. Preferably, the battery cover 12 is provided with an opening, and the battery case 1 also includes a front panel 14 arranged at the opening. Among the cooling channels of the plurality of cold liquid plates 21 connected in series, the two cooling channels located at the two ends are respectively connected to the external liquid inlet 15 and the external liquid outlet 16. Specifically, the external liquid outlet 16 and the external liquid inlet 15 are symmetrically arranged along the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0042] Optionally, the blade battery further includes a thermal insulation board 3 disposed between the blade battery module 2 and the battery box 1. The thermal insulation board 3 can prevent the blade battery module 2 from being affected by the ambient temperature. The thermal insulation board 3 is made of a heat-insulating material.

[0043] Optionally, the blade battery includes a plurality of blade battery modules 2, and the plurality of blade battery modules 2 are sequentially arranged in the battery box 1 along the second direction. In this embodiment, a solution in which the blade battery includes two blade battery modules 2 is exemplarily given.

[0044] This embodiment also provides a vehicle, including the blade battery in the above solution. The vehicle also includes a power motor, and the blade battery is used to provide power to the power motor.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A blade battery, characterized in that: include: Battery box (1); A blade battery module (2) is accommodated in the battery case (1), the blade battery module (2) comprising a plurality of battery cell assemblies and a plurality of cold liquid plates (21), wherein the plurality of cold liquid plates (21) are arranged in parallel and at intervals along a first direction, and one battery cell assembly is arranged between any two adjacent cold liquid plates (21), wherein a cooling channel is arranged in the cold liquid plate (21), and the cooling channels of the plurality of cold liquid plates (21) are sequentially connected in series, and the battery cell assembly comprises a first end plate (22) and a second end plate (23) which are spaced apart along a second direction, and a plurality of battery cells (24) which are all located between the first end plate (22) and the second end plate (23) and are sequentially stacked along the second direction, wherein the second direction is perpendicular to the first direction.

2. The blade battery according to claim 1, characterized in that: In any two adjacent battery core assemblies, the two first end plates (22) are plugged in and matched, and the two second end plates (23) are plugged in and matched.

3. The blade battery according to claim 2, characterized in that: The blade battery module (2) further comprises a cable tie (25), wherein the cable tie (25) is used to fasten together a plurality of the battery cell assemblies and a plurality of the cold liquid plates (21).

4. The blade battery according to claim 1, characterized in that: Each of the cold liquid plates (21) is provided with a liquid inlet interface (26) and a liquid outlet interface (27) which are in communication with the cooling channel, and the liquid inlet interface (26) and the liquid outlet interface (27) are respectively located at two ends of the cold liquid plate (21).

5. The blade battery according to claim 4, characterized in that: The liquid inlet interface (26) and the liquid outlet interface (27) are both protrudingly arranged on the end surface of the cold liquid plate (21).

6. The blade battery according to claim 1, characterized in that: The battery box (1) comprises a base (11), a battery cover (12) covered on the base (11), and bolts (13) connecting the base (11) and the battery cover (12); the base (11) and the battery cover (12) are arranged to form a storage space for accommodating the blade battery module (2).

7. The blade battery according to claim 6, characterized in that: The battery cover (12) is provided with an opening, and the battery box (1) further comprises a front panel (14) arranged at the opening, the front panel (14) being provided with an external liquid inlet (15) and an external liquid outlet (16), and among the cooling channels of the plurality of cooling liquid plates (21) connected in series, two cooling channels located at two ends are respectively connected to the external liquid inlet (15) and the external liquid outlet (16).

8. The blade battery according to any one of claims 1 to 7, characterized in that: The blade battery also includes a thermal insulation plate (3) arranged between the blade battery module (2) and the battery box (1).

9. The blade battery according to any one of claims 1 to 7, characterized in that: The blade battery comprises a plurality of blade battery modules (2), and the plurality of blade battery modules (2) are sequentially arranged in the battery box (1) along the second direction.

10. A vehicle, characterized in that: The vehicle comprises the blade battery according to any one of claims 1 to 9, and further comprises a power motor, wherein the blade battery is used to provide power to the power motor.

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