Battery liquid cooling module and battery pack

Abstract

The invention relates to the technical field of batteries, in particular to a battery liquid cooling module and a battery pack, the battery liquid cooling module comprises a battery stack, a liquid cooling plate between battery cells and a first quick connecting pipe, and the battery stack comprises a plurality of battery cells arranged in sequence; the liquid cooling plates between the battery cells are clamped between the adjacent battery cells, and the liquid cooling plates between the battery cells are parallel to the maximum cross section of the battery stack; a plurality of first liquid cooling storage cavities for storing cooling liquid are formed in the inter-cell liquid cooling plate, and each first liquid cooling storage cavity penetrates through the length direction of the inter-cell liquid cooling plate; and the first end of the first quick connecting pipe is communicated with the first liquid cooling storage cavity. The inter-cell liquid cooling plates are vertically clamped between the adjacent cells, and the inter-cell liquid cooling plates are parallel to the maximum cross section of the cell stack, so that the contact area between the inter-cell liquid cooling plates and the cells can be maximized, and high speed and high efficiency of heat dissipation are realized; therefore, the technical requirements of continuously increasing energy storage of the lithium ion battery with high capacity and high charge-discharge rate are met.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery liquid cooling module and a battery pack. Background Art

[0002] As one of the backbones of electrochemical energy storage, lithium-ion batteries have been installed in increasing amounts in recent years. As installed capacity and battery capacity increase, the thermal management and thermal safety protection requirements for lithium-ion batteries have attracted much attention. Typical thermal management technologies include air cooling, liquid cooling, heat pipe cooling, and phase change cooling. Among them, liquid cooling thermal management technology has great potential in the application of thermal management of lithium-ion batteries in terms of comprehensive performance such as heat dissipation performance and cost.

[0003] However, the existing lithium-ion battery liquid cooling structure is mainly concentrated in the cell thickness section, which has the problem of small heat dissipation area and limited heat dissipation speed. In addition, most of the lithium-ion battery energy storage thermal management solutions translate the liquid cooling thermal management solutions and devices of lithium-ion power batteries, that is, using an independent, external coolant storage box, using the lithium-ion battery energy storage power supply and micro-electric pump to force the lithium-ion battery and the external coolant to form a heat exchange, but this solution has the limitations of relatively complex lithium-ion battery energy storage structure and relatively low effective power utilization of energy storage energy.

[0004] Finally, with the scale of lithium-ion battery energy storage, the large capacity of lithium-ion energy storage cells, and the rapid charging and discharging rates, the requirements for lithium-ion battery energy storage thermal management technology are becoming increasingly higher. That is, it is necessary to meet the requirements of low space occupancy of indirect energy storage components, high efficiency of effective power utilization, and intelligent thermal management technology. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a battery liquid cooling module and a battery pack to meet the thermal management and thermal safety protection requirements of a lithium-ion battery energy storage module and a battery pack thereof.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the battery liquid cooling module of the present invention comprises:

[0009] A battery stack, the battery stack comprising a plurality of battery cells arranged in sequence;

[0010] An inter-cell liquid cooling plate, wherein the inter-cell liquid cooling plate is clamped between adjacent cells and is parallel to the maximum cross-section of the battery stack; a plurality of first liquid cooling storage cavities for storing coolant are provided in the inter-cell liquid cooling plate, and each of the first liquid cooling storage cavities runs through the length direction of the inter-cell liquid cooling plate;

[0011] a first quick-connect pipe, a first end of which is connected to the first liquid-cooling storage chamber; and

[0012] A bundling tape is used to bundle and fix the plurality of battery cells.

[0013] Optionally, the inter-cell liquid cooling plate is arranged vertically;

[0014] And / or, the inter-cell liquid cooling plate has thermally conductive buffer pads attached to both the front and back sides.

[0015] Optionally, the amount of cooling liquid injected into a single first liquid-cooling storage cavity is 75% to 95% of the volume of the inner cavity, and a low-boiling-point organic additive is added to the cooling liquid.

[0016] Optionally, the plurality of first liquid-cooling storage chambers are straight-through liquid storage chambers parallel to each other and are arranged at intervals along the height direction of the battery core;

[0017] Alternatively, the plurality of first liquid-cooling storage cavities are all circular liquid-cooling storage cavities, and the liquid outlets and liquid return ports of all the circular liquid-cooling storage cavities are concentrated on the same side of the inter-cell liquid-cooling plate.

[0018] Optionally, the plurality of first liquid-cooling storage chambers provided in the inter-cell liquid-cooling plate are arranged in two rows;

[0019] The inter-cell liquid cooling plate has thermally conductive buffer pads attached to both the front and back sides, or a cavity is formed between two rows of the first liquid cooling storage cavities, and a thermally conductive buffer pad is arranged in the cavity.

[0020] Optionally, the battery liquid cooling module includes a plurality of the battery stacks;

[0021] The second end of the first quick-connect tube is connected to the first liquid-cooled storage cavity in the adjacent battery stack; or, the battery liquid cooling module also includes an upright inter-battery stack liquid cooling plate, which is located between the adjacent battery stacks or on one side of the battery stack, and a second liquid-cooled storage cavity is provided in the inter-battery stack liquid cooling plate, and the second end of the first quick-connect tube is connected to the second liquid-cooled storage cavity.

[0022] Optionally, the front and back sides of the inter-battery stack liquid cooling plate are prefabricated with staggered liquid storage cavity inlet and outlet ports; the ends of the inter-battery stack liquid cooling plate are also prefabricated with inter-stack screw fastening installation holes; the height of the inter-battery stack liquid cooling plate is greater than the height of the battery stack.

[0023] Optionally, a cell end liquid cooling plate is provided on the outermost cell of the battery stack, and a third liquid cooling storage cavity is provided in the cell end liquid cooling plate; the battery liquid cooling module further comprises a second quick connection tube, and the second quick connection tube is connected to the third liquid cooling storage cavity in the adjacent battery stack;

[0024] The cell end liquid cooling plate is preset with an end screw fastening installation hole.

[0025] Optionally, the first quick-connection tube and the second quick-connection tube both include a flexible connection tube and a pair of quick-connection connectors, and the pair of quick-connection connectors are connected to the ends of the flexible connection tubes in a one-to-one correspondence.

[0026] Furthermore, the present invention also provides a battery pack, which includes a shell and the above-mentioned battery liquid cooling module arranged in the shell.

[0027] (III) Beneficial effects

[0028] In the battery liquid cooling module of the present invention, the liquid cooling plate between the battery cells is vertically clamped between adjacent battery cells, and the liquid cooling plate between the battery cells is parallel to the maximum cross-section of the battery stack, so that the contact area between the liquid cooling plate between the battery cells and the battery cells can be maximized to achieve high-speed and high-efficiency heat dissipation, thereby meeting the growing technical requirements for high-capacity and high-rate charge and discharge lithium-ion battery energy storage.

[0029] Specifically, compared with the prior art, the present invention also has the following beneficial effects:

[0030] 1. Control costs:

[0031] All liquid cooling plates are made of an integrated casting process, which can reduce costs compared to liquid cooling plates made by stamping and brazing. The liquid cooling plate and the thermal conductive buffer pad are combined, and the composite liquid cooling plate is directly involved in the production of the battery stack, shortening the process flow. The battery cells are liquid-cooled in parallel, and the battery stacks are liquid-cooled in series. The temperature difference between the battery cells and the battery stacks is used to achieve cooling flow inside the liquid cooling plate, thereby avoiding or reducing the need for external coolant pumping devices and connecting pipes.

[0032] 2. Improve the safety of battery cells: Setting up a liquid cooling plate at the largest cross-section of the battery stack will maximize the heat dissipation efficiency and speed of the battery stack and battery pack; the series liquid cooling method between battery stacks will greatly reduce the temperature difference in the battery pack and improve the temperature consistency; setting up a liquid cooling plate between battery stacks, and storing coolant in the liquid cooling plate, to form a strong physical and chemical isolation between battery stacks; under the combined effect of multiple parties, the thermal protection safety of lithium-ion battery energy storage is improved;

[0033] 3. Improve battery life and safety performance: By reducing the temperature difference between battery cells and battery stacks, the battery temperature consistency is improved, which in turn ensures that the battery is in the optimal operating temperature range, ultimately improving the service life and safety performance of the battery cells and battery stacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic structural diagram of a battery liquid cooling module in a first embodiment of the present invention;

[0035] Figure 2 for Figure 1 A structural diagram from another perspective;

[0036] Figure 3 It is an enlarged schematic diagram of the liquid cooling plate between battery cells in the present invention;

[0037] Figure 4 is an enlarged schematic diagram of the quick-connect tube in the present invention;

[0038] Figure 5 is a schematic structural diagram of a battery liquid cooling module in a second embodiment of the present invention;

[0039] Figure 6 is a schematic structural diagram of a battery liquid cooling module in a third embodiment of the present invention;

[0040] Figure 7 for Figure 6 A structural diagram from another perspective;

[0041] Figure 8 is a schematic structural diagram of a battery liquid cooling module in a fourth embodiment of the present invention;

[0042] Fig. 9 It is an enlarged schematic diagram of the double-layer structure of the liquid cooling plate between the cells in the present invention;

[0043] Fig.10 for Fig. 9 A structural diagram from another perspective;

[0044] Fig.11 It is an enlarged schematic diagram of a liquid cooling plate between battery cells in another embodiment of the present invention;

[0045] Fig.12 It is an enlarged schematic diagram of the liquid cooling plate between battery cells using a circular liquid storage cavity in the present invention;

[0046] Fig.13 is a schematic structural diagram of a battery liquid cooling module in a fifth embodiment of the present invention;

[0047] Fig.14 for Fig.13 A schematic diagram of the structure from another perspective.

[0048] [Description of Reference Numerals]

[0049] 1: liquid cooling plate between battery cells; 101: first liquid cooling storage chamber; 102: thermally conductive buffer pad;

[0050] 2: quick connection tube; 21: first quick connection tube; 22: second quick connection tube; 201: quick connection head; 202: flexible connection tube;

[0051] 3: Battery cell;

[0052] 4: liquid cooling plate at the end of the battery cell; 401: the third liquid cooling storage chamber; 402: the end screw fastening mounting hole;

[0053] 5: Strapping tape;

[0054] 6: Liquid cooling plate between battery stacks; 601: Liquid inlet and outlet of the liquid storage chamber; 602: Screw fastening installation holes between stacks. DETAILED DESCRIPTION

[0055] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0056] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] See also Figures 1 to 5The present invention provides a battery liquid cooling module, which may specifically include a battery stack, an inter-cell liquid cooling plate 1, and a first quick-connect pipe 21. The battery stack includes a plurality of cells 3 arranged in sequence. The inter-cell liquid cooling plate 1 is clamped between adjacent cells 3, and the inter-cell liquid cooling plate 1 is parallel to the maximum cross-section of the battery stack (for example, Figure 1 and Figure 2 The vertical setting adopted by the liquid cooling plate 1 between the battery cells can maximize the contact area between the liquid cooling plate 1 between the battery cells and the battery cells 3 to achieve high speed and high efficiency of heat dissipation, thereby meeting the growing technical requirements for high capacity and high charge and discharge rate lithium-ion battery energy storage.

[0060] The inter-cell liquid cooling plate 1 is provided with a plurality of first liquid cooling storage chambers 101 for storing coolant, and each first liquid cooling storage chamber 101 runs through the length direction of the inter-cell liquid cooling plate 1, wherein the cross-sectional shape of the first liquid cooling storage chamber 101 may preferably be circular or square. The first end of the first quick-connect tube 21 is connected to the first liquid cooling storage chamber 101, and the second end of the first quick-connect tube 21 may be connected to the first liquid cooling storage chamber 101 or other liquid cooling device of the adjacent battery stack, so that the inter-cell liquid cooling plate 1 is connected in series between two battery stacks, and the plurality of inter-cell liquid cooling plates 1 in the same battery stack are connected in parallel with each other. In actual operation, when it is necessary to inject coolant into the first liquid cooling storage chamber 101, the coolant may be injected into the side of the first liquid cooling storage chamber 101 that is not connected to the first quick-connect tube 21, and the injection port may be sealed after the injection is completed.

[0061] like Figure 3 As shown, the inter-cell liquid cooling plate 1 may preferably be pasted with a thermally conductive cushion pad 102 on both the front and back sides to fill the flatness gap between the inter-cell liquid cooling plate 1 and the battery cell 3, ensuring the heat dissipation efficiency and rate of the inter-cell liquid cooling plate 1. In addition, the plurality of battery cells 3 may preferably be bundled and fixed by a bundling tape 5 to compress the thermally conductive cushion pad 102, ensuring that the inter-cell liquid cooling plate 1 and the battery cell 3 are in close contact.

[0062] In a preferred embodiment, the plurality of first liquid-cooled storage chambers 101 are straight-through liquid storage chambers parallel to each other and arranged at intervals along the height direction of the battery core 3, correspondingly arranged in the height direction of the entire battery core 3, so as to achieve a better heat dissipation effect. The amount of coolant injected into a single first liquid-cooled storage chamber 101 and the remaining liquid-cooled storage chambers is 75% to 95% of the corresponding inner cavity volume, and low-boiling-point organic additives are added to the coolant, such as acetaldehyde, acetic acid, or a mixture of the two. Each liquid-cooled storage chamber is subjected to negative pressure treatment before adding coolant, and a certain negative pressure is still maintained in the liquid-cooled storage chamber after the coolant is injected, so that the boiling point of the coolant additive can be further reduced, and the low-boiling-point organic additive in the coolant will be more easily vaporized. The heat generated by charging and discharging of the battery core 3 is fully utilized, and the heat obtained can vaporize the low-boiling-point organic additive by heat, forming air pressure to drive the coolant in the liquid-cooled storage chamber to form an internal circulation between the battery stacks, and under the action of heat conduction and heat convection, the heat balance inside the battery stack and between the battery stacks is obtained, so as to achieve the effect of reducing the temperature difference.

[0063] See also Figures 6 to 8 , the battery liquid cooling module may include multiple battery stacks. Figure 6 and Figure 7 In the embodiment, the second end of the first quick-connect pipe 21 is connected to the first liquid-cooled storage chamber 101 in the adjacent battery stack. Figure 1 and Figure 8 In the embodiment, the battery liquid cooling module also includes an inter-stack liquid cooling plate 6 which is vertically arranged and is located between adjacent battery stacks, or on one side of the battery stack (the inter-stack liquid cooling plate 6 can also be regarded as a part of the battery pack shell in this case), and a second liquid cooling storage cavity is provided in the inter-stack liquid cooling plate 6, and the second end of the first quick-connect tube 21 is connected to the second liquid cooling storage cavity, thereby forming the inter-stack liquid cooling plate 6 and the first liquid cooling storage cavity 101 in series. In a battery pack consisting of two or more battery stacks, in order to further improve the thermal safety between the battery stacks, preferably, an inter-stack liquid cooling plate 6 is added between the battery stacks to achieve thermal isolation between the two battery stacks.

[0064] Among them, the front and back sides of the inter-stack liquid cooling plate 6 are prefabricated with staggered liquid storage cavity inlet and outlet ports 601; the end of the inter-stack liquid cooling plate 6 is also prefabricated with inter-stack screw fastening installation holes 602, so that the inter-stack liquid cooling plate 6 can be installed between two battery stacks. In addition, the height of the inter-stack liquid cooling plate 6 is greater than the height of the battery stack, and it maintains an interference fit with the inner wall of the top cover of the battery pack.

[0065] In addition, in a more preferred embodiment, a cell end liquid cooling plate 4 is provided on the outermost cell 3 of the battery stack, and a third liquid cooling storage chamber 401 is provided in the cell end liquid cooling plate 4 to meet the heat dissipation requirements of the two outermost cells of the battery stack. The battery liquid cooling module also includes a second quick-connect tube 22, and the second quick-connect tube 22 connects the third liquid cooling storage chamber 401 in the adjacent battery stack to form a series connection of the cell end liquid cooling plate 4 between two battery stacks. The cell-to-cell liquid cooling plate 1 and the cell end liquid cooling plate 4 are manufactured by a casting process. The cell end liquid cooling plate 4 is preset with an end screw fastening mounting hole 402, and the cell end liquid cooling plate 4 can also be used as a fixed end plate for installing the battery stack, which facilitates the assembly of the battery stack.

[0066] See again Figure 1 and Figure 4 , the quick connection tube 2 includes a first quick connection tube 21 and a second quick connection tube 22, both of which can preferably include a flexible connection tube 202 and a pair of quick connection heads 201, and the pair of quick connection heads 201 are connected to the ends of the flexible connection tube 202 in a one-to-one correspondence. When the battery cells are charged and discharged, even if the liquid cooling plate 1 between the battery cells in the battery stack is displaced, it can ensure that the liquid cooling plate 6 between the battery stacks is firmly connected to the liquid cooling plate 1 between the battery cells through the first quick connection tube 21 without falling off. Among them, the flexible connection tube 202 is composed of two layers of inner and outer materials, wherein the outer layer is a metal material tube, and the inner layer is an elastic polymer material tube, such as a rubber tube; optimally, the quick connection head 201 connected to the liquid cooling plate and the liquid cooling storage cavity interface connection part are partial polymer material tubes, and the quick plug-in connection length is constrained by the flexible connection tube 202, thereby forming a process limit for the connection length.

[0067] In addition, in other embodiments, see Figure 12 to Figure 14 , multiple first liquid-cooling storage chambers 101 are all U-shaped liquid storage chambers (for example, U-shaped) to meet the structural feature requirements of square shell batteries or similar blade batteries. The liquid outlets and liquid return ports of all U-shaped liquid storage chambers are concentrated on the same side of the inter-cell liquid cooling plate 1. The inter-cell liquid cooling plate 1 of the blade battery stack adopts a U-shaped liquid storage chamber, and the liquid outlet and liquid return port of the U-shaped liquid storage chamber are centrally arranged on the non-pole side, thereby avoiding the series-parallel connection between the pole on the pole side of the battery cell and the Busbar.

[0068] See also Figures 9 to 11In another embodiment, the multiple first liquid-cooled storage chambers 101 provided in the inter-cell liquid-cooling plate 1 are arranged in two rows to form a double-layer structure to adapt to different cell single-unit capacities and charge-discharge ratios. The inter-cell liquid-cooling plate 1 with a double-layer structure is pasted with a thermally conductive buffer pad 102 on both sides, or a cavity is formed between the two rows of first liquid-cooled storage chambers 101 to perform thermal isolation between the liquid-cooling plate and the battery stack, and a thermally conductive buffer pad 102 is provided in the cavity to increase the fit between the inter-cell liquid-cooling plate 1 and the battery cell 3 and the thermal safety isolation between the battery cells.

[0069] Furthermore, the present invention also provides a battery pack, which includes a shell and the above-mentioned battery liquid cooling module arranged in the shell. The inter-cell liquid cooling plate 1 is clamped between adjacent cells 3, and the inter-cell liquid cooling plate 1 is parallel to the maximum cross-section of the battery stack, which can maximize the contact area between the inter-cell liquid cooling plate 1 and the cell 3 to achieve high speed and high efficiency of heat dissipation, thereby meeting the growing technical requirements of lithium-ion battery energy storage with high capacity and high charge and discharge rates.

[0070] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery liquid cooling module, characterized in that: The battery liquid cooling module comprises: A battery stack, the battery stack comprising a plurality of battery cells (3) arranged in sequence; An inter-cell liquid cooling plate (1), the inter-cell liquid cooling plate (1) being clamped between adjacent cells (3), the inter-cell liquid cooling plate (1) being parallel to the maximum cross-section of the battery stack; a plurality of first liquid cooling storage cavities (101) for storing cooling liquid are provided in the inter-cell liquid cooling plate (1), each of the first liquid cooling storage cavities (101) running through the length direction of the inter-cell liquid cooling plate (1); a first quick-connect pipe (21), wherein a first end of the first quick-connect pipe (21) is connected to the first liquid-cooling storage chamber (101); and A bundling tape (5), wherein the plurality of battery cells (3) are bundled and fixed by the bundling tape (5).

2. The battery liquid cooling module according to claim 1, characterized in that: The inter-cell liquid cooling plate (1) is arranged vertically; And / or, the inter-cell liquid cooling plate (1) has thermally conductive buffer pads (102) adhered to both the front and back sides.

3. The battery liquid cooling module according to claim 1, characterized in that: The injection amount of the cooling liquid in a single first liquid-cooling storage cavity (101) is 75% to 95% of the volume of the inner cavity, and a low-boiling-point organic additive is added to the cooling liquid.

4. The battery liquid cooling module according to claim 1, characterized in that: The plurality of first liquid-cooling storage chambers (101) are all straight-through liquid storage chambers parallel to each other and are arranged at intervals along the height direction of the battery core (3); Alternatively, the plurality of first liquid-cooling storage chambers (101) are all circular liquid-cooling chambers, and the liquid outlets and liquid return ports of all the circular liquid-cooling chambers are concentrated on the same side of the inter-cell liquid-cooling plate (1).

5. The battery liquid cooling module according to claim 1, characterized in that: The plurality of first liquid-cooling storage chambers (101) provided in the inter-cell liquid-cooling plate (1) are arranged in two rows; The inter-cell liquid cooling plate (1) has thermally conductive buffer pads (102) attached to both the front and back sides thereof, or a cavity is formed between two rows of the first liquid cooling storage cavities (101), and a thermally conductive buffer pad (102) is arranged in the cavity.

6. The battery liquid cooling module according to any one of claims 1 to 5, characterized in that: The battery liquid cooling module includes a plurality of battery stacks; The second end of the first quick-connect tube (21) is connected to the first liquid-cooled storage cavity (101) in the adjacent battery stack; or, the battery liquid-cooling module further comprises an upright inter-battery stack liquid-cooling plate (6), the inter-battery stack liquid-cooling plate (6) being located between the adjacent battery stacks or on one side of the battery stack, a second liquid-cooled storage cavity being provided in the inter-battery stack liquid-cooling plate (6), and the second end of the first quick-connect tube (21) is connected to the second liquid-cooled storage cavity.

7. The battery liquid cooling module according to claim 6, characterized in that: The front and back sides of the inter-battery stack liquid cooling plate (6) are prefabricated with staggered liquid storage cavity inlet and outlet ports (601); the ends of the inter-battery stack liquid cooling plate (6) are also prefabricated with inter-stack screw fastening installation holes (602); the height of the inter-battery stack liquid cooling plate (6) is greater than the height of the battery stack.

8. The battery liquid cooling module according to claim 6, characterized in that: A cell end liquid cooling plate (4) is provided on the outermost cell (3) of the battery stack, and a third liquid cooling storage cavity (401) is provided in the cell end liquid cooling plate (4); the battery liquid cooling module further comprises a second quick connection tube (22), and the second quick connection tube (22) is connected to the third liquid cooling storage cavity (401) in the adjacent battery stack; The cell end liquid cooling plate (4) is pre-set with an end screw fastening installation hole (402).

9. The battery liquid cooling module according to claim 8, characterized in that: The first quick-connection tube (21) and the second quick-connection tube (22) both comprise a flexible connection tube (202) and a pair of quick-connection connectors (201), wherein the pair of quick-connection connectors (201) are connected to the ends of the flexible connection tube (202) in a one-to-one correspondence.

10. A battery pack, characterized in that: The battery pack includes a shell and a battery liquid cooling module according to any one of claims 1 to 9 arranged in the shell.

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